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SureSight Service Manual

1. SHALL NOT BE REPRODUCED OR COPIED ED AS A BASIS FOR MANUFACTURE OR SALE OF EQUIPMENT OR DEVICES WITHOUT WRITTE ERMISSION PAGE 4 OF 4 DRAWING NUMBER A04262 Table 2 Software Revision Log Software Suggested Revision New Features Bug Fixes Upgrade 101 Initial Release V 1 20 e None e Changed camera initialization to V 1 20 prevent long delay in obtaining good images For additional items see corrective action list in VDD Added support to obtain the software Low battery signal no longer lost V 1 20 version and current dip switch after depressing Adult Child positions button Print out matches LCD No axis printed out if cylinder equal V 1 20 to zero e No sign is printed or displayed for zero sphere or cylinder V 120 e New auto shutdown operation Shut e None V 1 20 down occurs in 1 minute with results saved in battery backed RAM for recall at any later time FPGA BIT Test disabled e display patient records and adult curvefit distance measurements during tests Longer blanking time when taking e None V 1 20 distance measurements to try to prevent flaky distance problem Add event recording for calibration data updates e Revised Adult Curvefit These include DLL and WA Down changes Numbers not included above were not released to production Shaded releases were for internal DLL only and do not affect service Unless oth
2. o 15 0 13 1 oh IRDA Port Printer L Fixation 3 3V OW DSP Power Battery PN 140399 Rev B 10 1 5 TOOLING SET UP WIRE DIAGRAM Keyboard USB cord needed for testing of the unit Computer Power Cord RS 232 Cable needed to load software to unit S Cable WA P N 880181 Panasonic Camera S Video connector P N GP KS 162 BNC Cable IMAQ 1 Gray Switch Box Plug in Fiber Optic Bundle Transformer WA P N s 73210 WA P N 07800 73308 387001 73305 UDT Meter P N S370 UDT Laser Sensor P N 268 CP White Bal On Auto Light On Video Level Manual UDT Plug in Transformer EIPAC 12V transformer P N WM 144 1950 PN 140399 Rev B 11 To Set Up Repair Tooling Connect all wires to computer per provided wire diagram Plug all plug in transformers to a power strip Plug the power strip into a step down transformer Connect the X Y adjustment laser measurement slide and the Swing eye fixture to the plate See diagrams below for proper placement Bom Place T holder in holder remove to swing fixture Connect swing fixture with bolt Connect X Y Adjustment fixture to plate with 2 screws There is one screw on each side of the slide PN 140399 Rev B 12 mb Jl p Pb Prep p o RE PRRP PP Db E WARNINGS ATTENTION Refer to the operating instructions This symbol AN is intended to advise the user of the presence of important operating
3. 54 PAGE 1 OF 9 DRAWING NUMBER A04187 PROCESS SHEET FOR SureSight Final Test Specification DRAWN C Fahrenkrug DATE 3 30 00 REL TO PROD GR Waclena DATE 3 30 00 Release to Production 5 41157 03 30 00 Added clarifying repair 5 41599 06 29 00 notes p6 amp 7 Z 4 E DRAWINGS AND SPECIFICATIONS ARE E PROPERTY OF WELCH ALLYN INC AND NOT BE REPRODUCED OR COPIED O ED AS A BASIS FOR MANUFACTURE OR SALE PMENT OR DEVICES WITHOUT WRITTEN PERMISSION PAGE 2 OF 9 DRAWING NUMBER A04187 GENERAL PCBA tester must do verify the following functions l ATA CA de O9 TO 10 11 12 Default Calibration Record Unit Information Distance sensor calibration User Indicators Fixation LED s LCD operation Alignment Crosshair Button operation Print operation IR RS232 Download Operation Laser levels Minimum Nominal Maximum Camera Gain Setting Refractive readings Sphere and Cylinder Charge Current Low Battery Detect and Low Battery Warning 13 14 Nominal Current Draw Real Time Clock Unless otherwise specified e All measurement accuracies to be within 2 All voltage and current is expressed as RMS e Input voltages to be maintained within 5 e All communications to unit are through USB interface using cable 140104 1 except step 7 which us
4. Figure 1 Printer position 2 4 12 Follow instructions on the screen 2 4 13 The following screens will prompt you to place the distance block in the subsequent positions The positions for the distance block are marked on the plate Follow instructions on the screen The screens will change to let you know when to move the distance block to the next position PN 140399 Rev B 20 positions 1 4 are marked onthe _ Figure 2 Distance block position 2 4 14 After the distance for position 4 is taken leave the distance block in that position for the next operation The next screen will prompt you to press start YOU DO NOT NEED TO DO THIS IT WILL START AUTOMATICALLY Once the test is done the next screen will appear 2 4 15 The next three screens will prompt you to press a certain button follow the instructions on the screens Once you press the button the screen will change to show you which button to press next The last button is the go button Once you press this it will start to take a reading hold the go button in until it stops 2 4 16 The next screen prompts you to place the laser measurement tool in front of the unit Once this in the correct position clamp into place Laer inten city Settings PN 140399 Rev B 21 Clamp tool EE down when in Tool Figure 3 Laser Measurement Tool proper place 2 4 17 Once the fixtures are in place use the NV scope to see the position on the laser Make sure t
5. APPROVED CCF 06 08 00 itle SED MKT 06 08 00 Size ENGINE PROJECT NO a d RD14000 Date DAVE LED Mini Schematic Document Number 140151 Tuesday June 27 2000 Sheet By c le 2c y Release to Production at X9 5 41452 6 9 00 CCF LASER_LD LASER_PD 71220 0400 D1 RLD 78PP Notes 1 All values are shown for reference only See BOM for proper values NO PD is sent redundantly on pinl D1 is a single package 4 Dl footprint does not match suppliers recommended dimensions This reduced format is critical to prevent shorting ee to the case and should not be changed Co HECKED CCF 06 08 00 CCF 06 08 00 itle RELEASED DAVE Laser Mini Schematic 06 08 00 Size Document Number Rev MKT CCF RD14000 Date Wednesday June 28 2000 Sheet 1 of 1 EMIL o CC EE Release to Production at X9 Modifed Q3 laser on to fix laser on wheel failures of previous version 5 41452 6 9 00 VSLaser VSLaser O O TP11 Laser Drive i 10k a Q3 LASER ON OFF f MMBT4403 LED D vs Viewing rive 2k 5V VSLaser VSLED VSLED 9 VSLaser R10 provides maximum resistor value O 9 C1 and maximum Vset achievable 1uF 25V LASER INC M l LASER U D a TP6 R6 LASER_ON OFF j 2k LASER CS 5 C8 3 3V VIEW_ON OFF o PD R9 AuF 100V X7R Q1 Q E 2K VIEW_ON OFF MMBT4403 Q2 VREF O VSET MMBT4403 Molex 52271 0890 U8A NE5234 LMC6762 VM R10 10k R11 gt
6. Return unit for repair Retake test Note version 1 09 software and higher If it is a lower version send unit in to repair to upgrade Return Unit for repair Retake test Note version 1 09 software and higher If it is a lower version send unit in to repair to upgrade Return Unit for repair Customer Corrective Repair Technician Action Corrective Action Verify the Charge Current Check to see if flexes are connected connect if not Replace LCD Assembly and or flex Replace battery compartment Replace Power Board Replace DSP Board Check to see if flexes are connected connect if not Replace LCD Assembly and or flex Check to see if flexes are connected connect if not Replace LCD Assembly and or flex 30 Chief Cause Look For Customer Repair Technician Complaint orrective Action Corrective Action C 8 b Does Not Print Does Not Print Prints too light No Cross Hair Printing too far Printer has gone to sleep Print darkness setting is set too light Defective LED Mini board or electrical failure PN 140399 Rev B a b Ensure printer is turned on Ensure that the print button is held until the ta da is heard Ensure the unit is aimed at the front of the printer Try printing within 3 feet of printer Check to see if red LED is lit in the front Try sliding the center contrast switch to the right Try self test on printer to see if the batterie
7. before serial 9920228 for 14011 O Ring see section 46 e Alwaysremove Power PCB Charger e Domestically Change when there is a customer complaint about charge rate in units before 9900480 for 14001 and 9920086 for 14011 e Internationally N A Cross Tubes Windows e Always replace if before serial 440000018 for 14001 and before serial 0020093 for 14011 Software see section 2 4 e Always upgrade the software to most recent version PN 140399 Rev B 15 SECTION 2 3 TOOLS REQUIRED FOR SERVICE CALIBRATION AND SOFTWARE LOADING Table 2 3 1 Tier 1 Unit Check Out Yearly Calibration Tier 1 tooling is the minimum required to equip a site to perform yearly calibrations This calibration does not require the opening of the unit and primarily verifies the product performance Software upgrades are feasible with this tooling but no internal repairs are allowed Bold part numbers indicate parent items Non bold items below are included in the parent set TIER 1 REQUIRES TOOL SET T17009 WHICH CONSISTS OF THE FOLLOWING Distance Fixture amp Target Distance Accuracy PC Windows 98 with USB connector Required Unit Information Software WA Part i s 73210 Lighting for Fake Eye w fiber optic Required Alignment Verification 07800 73305 73308 bundle WA Part 387001 F O Illuminator Connector Base Alignment Verification Hewlett Packard 82240B SureSight Printer Print capability amp s w version BN
8. All values are reference only R73 For actual part values pleas s BOM 100K 2 Test Point UI Reference TP24 TP1 VIEW ON OFF 154 BBC t REF urren 54 I END ON gt LBW gt gt LBO TP5 L VDD U15 1 U15 2 TP6 VSET R41 LMC6772AIMX LMC6772AIMX TP7 Laser CS 69 8K TP8 LASER U D TPO LASER INC R44 TP10 LD Cathode 40 2K TPll LASER ON OFF TP12 PD Voltage gi enemies io d bol All s nam n groun m vary y ames PUDE IE ME FOU e Mery Setting is 6 2V DRAWN PATE ELCH ALLYN INC supplies are passed to and from DSP E Dickman 03 25 99 EDICAL DIVISION Allocation should not be changed Setting is 7 1V APPROVED SKANEATELES FALLS NY USA without rechecking 6 9 00 CCF itle RELEASED Power and Distance Board 6 9 00 Size Document Number Rev CCF RD14000 Date Tuesday June 27 2000 Sheet 1 of 2 5V i T C35 Distance Measure iare 1uF 25V T1p4 is the HV output pin D12 may be optionally SC 5HV O TP16 2200pf X7R 1000V 2 4 HVS 1 SENSOR SIGNAL L5 R48 4 041 4 042 POLAROID 614095 C37 100 TPS10uF 25V TPS10uF 25V 3 3 01uF 50V X7R PID616339 D11 NT pe 1SMB5956BT3 C38 1 2 Gt0UT 10 01uF 50V X7R TP20 Q11 D12 Open Increased MJD3055V 1SMB5956BT3 Gain GCD MSB R54 68 1K Nominal population SENSOR_GND R49 and R50 Only IVA R77 PID614906 0 Ohm TP21 DO NOT POPULATE R76 R77 RAW_ECHO RAW_ECHO IVA U12D NE5234 12 14 13 5V R62 0 Ohm C43 1uF 25V C44
9. C45 GTi Aza dd Md N avrov 18 A20 EL aay N rcu V a iN RESET pldddVis close A4_XTAL K15 A19 Has AQ NE DMA REQ PS DMA REQ1 ne iul Ye sota G13 A18 Fain A O EB ES amp NC No I Soer pe B2 XFC K13 A17 Eta a Wyr FPGA Osb T T GND NC L K14 A16 Has AB NE DO a a Biel AT edn 16 A15 ie AS neo 3 3Y D1 Laz As aa A2 Vsssyni Lis A14 HS AW e0 Las Da We 0c A 22222 x y L14_A13 lia as ugg j Data28 M14 A12 M s baat 30 gt 97 PORESETb B M16_A11 o Lea DR oy B3 B3 PORESET L13 A10 a2 Datagg EN HRESETb BS 5 HRESET M18 A9 m TT pag Dad TN Tx x N16 AS FN je Ha Datagg EN 47K ESE B4 p4 SRESET N15 A7 L8 Dataga TN C5_RSTCONF M13 A6 MIS bate N1 IRQO o bab A N2 IRQ1 Bie Data18 D9 RSV IRO2 s nt L2 bat TN C3 DPO IRQS 2 Date ig i D4 DP1 IRQ4 peg Dataig EN D3 DP2 IRQS so Daat TN C2_DP3 IROS SDACK1 0 DMA SYNC ACK1 Li Dataig AAA LSB N RESETY HRESETb Es D31 FE Data31 D2 D30 p2 Da EN 7 E2 D29 LE2 Datagg TN Hmo Data F4 D28 Data28 Ho Das Y L3 D27 pig Datag7 SSN me Datag EN E4 D26 LE4 Da ee Nj pig Dad TN G4_D25 Las baas TN SRESETb ma Dad ee Wy MS nS baa Pes HS p77 Dead AAA SS LCD GO DS ps Ip B7 PTR AT3 L4 D23 Ha Daes TN HRESETb 80 Datat LCD Right C7 IP B6 DSDI ATO H47D22 a oSA LCD Len C9 IP B5 LWP1 VF1 F2 D21 LE Dati ee N3 OWIYY LoBatt Warning B9 IP B4 LWPO VFO G3 D20 G3 baw SN LoBatt DEAD A9 IP B3 IWP2 VE2 G2 D19 3 3VFIL DIPSW2 D7 IP B2 IOIS16 B AT
10. GND C8 C9 C10 AuF 50V X7R 1UF 50V X7R 1uF 50V X7R 1uF 50V X7RIuF 50V X7R 1UF 50V A7R 1uF 50V X7R C7 GND 1uF 25V T 1uF 25V T tuF 25V TAJ ASIC G2_FPGA TOV 10V 10416 01 10178 01 d di q C C18 C19 C20 C21 C22 TuF 50V X7R 1uF 50V A7R 1uF 50V X7R 1uF 50V X7RIuF 50V X7R 1uF 50V X7R 1uF SDV X7R 3 3VFIL 3 3VFIL A 3 Bypass Caps for FPGA 3 3VFIL CCD_Ref_CLK PS gt gt CCD_Ref_CLK 3 IRQ1b U3 _ 48 0000Mhz TP42 E D Vec H dr ed of 7 ddr U4 T C32 L 4j 1471171393333333 MP C823 gt VERTb_3 AuF 50V X7R aan LD ROM CSb G ose SGOS9SDDG9DUDDDUDDDDDDDDDDDDODOO D12_CSO Fia DRAM CSb m 2 HORIZb 3 GND OUT OOO000000000000000000000000070 A14 CS1 75 DO ga n BDDDDDDDDDDDDDDDDDDDDDDDDDDD B14 Oso B14 FPGA Csb D17 T 1O XO P 00 O O QI LO QI LO QI LO NO QN LO QI LO QI L0 CO OO O QN A15 CS3 A RTC_Csb DRTC Csb D2 Co 40 WWWW OIEA DAS SSSS IT Z 25 LB18 XS 45 sac A aes B16_CS4 p eT D13 CS5 D4 a z 3 3VFIL aes eee 4 lt 4 C14 CS6 CE1 B D5 A E ESe ez1 S B Kaz 1uF 50V X7 1uF 50V B15 CS7 GE2 B D6 apt YN 3VFIL D7 G A31 F16 A31 E n TP G15 A30 Fain A39 SSSAAA 1297 1 E 3 3VFIL H16 A29 Fare VDDSYN K16 A27 F L WEN 5 gt R6 F14 A26 Dl H147A25 CN 0 H13 A24 Dia At EN TP2 I ok A5 EXTAL H15 A23 Pig AR EN TFs 1
11. R63 1UF 50V X7R DO NOT POPULATE R63 100K R69 1k 3 3V O EVA 5V TP22 9 R78 7 TP29 100K TP28 ki L 3 1 LOGIC_ECHO 2 BLANKING a ROO ig 1 Q13 U16 1 MMBT4401 LMC6772AIMX 2K y R61 49 9K V NY 5V O R64 470 VREF O R65 1 2 10K D13 R66 TL431ACD 14K 3 3V 3 3V NY O C45 R85 1uF 25V 10K 3 3V 9 3 3V O WY R84 TPX1 2k ToneEN 1 2 1 Q16 MMBT4403 5V U12B Q NE5234 R82 10K GNDSignal U12A NE5234 2 1 5 4 U12C C48 C49 NE5234 22uF 35V 3 3V U16 2 LMC6772AIMX ers NY Notes 1 All values ar For actual reference only art values please s BOM 2 Test Point Cross Reference TP1 VIEW ON OF TP2 LED TP3 PD Current TP4 GND TP5 L VDD TP6 VSET TP7 Laser CS TP8 LASER U D TP9 LASER INC TP10 LD Cathode IPll LASER ON OFF TP12 PD Voltage TP13 VREF 3 Netnames on ground symbols vary All supplies are passed to and from DSP Allocation should not be changed without rechecking REV DESCRIPTION Release to Production at X10 made provision for 100 step pot 6 9 00 CCE 5 41452 ti Q z To DSP Board TP15 3 3V O Ji 15V Molex 52435 3091 9 3 3V 1 T AAA 75V E 45 IMG 5V 15V A swa T ji RET 5 i ouo 2 7 KM da eM cu VBATT ON ON 7 TP33 LBO S LBO LBW BW XM BLANKING OGIC ECHO TP34 ToneEN Lj onelN ToneCS ToneU D DCINCHRG DCINCHRG DCGND DCINUNPLUGGED pee AU
12. S Battery Header 43650 0212 Ultrasonic Header SENSOR_SIGNAL SENSOR_GND 48650 0312 VBATT TP17 TP19 3 3V O 3 3V 1 Audible Feedback C46 1uF 25V 3 3V R79 R81 9 100k 100k LS1 2 CUT 03A TonelNC C47 ToneU D 390pF 50V NPO ToneCS 1 Q12 MMBT4401 X9314WS 3 R94 TP30 R57 U18 100k L 182 TONE DRIVE WY NY Populate R79 for 32 step pot C50 R59 390pF 50V NPO 1K Populate R94 for 100 step pot Do not populate both IVA DRAWN DATE David Fallat 04 25 00 APPROVED CCF 06 09 00 itle RELEASED Power and Distance Schematic 06 09 00 Size Document Number Rev Pm ENGINEER PROJECT NO 140157 A CCE RD14000 Date Tuesday June 27 2000 Sheet 2 of 2 C D E DESCRIPTION ECN DATE APPROVAL Release to Production 5 41452 06 09 2000 CIO 3 S O 50 HD61602R DRAWN DATE D Fallat 06 09 2000 APPROVED CCE 6 9 00 RELEASED 6 9 00 ON C5 ENGINEER PROJECT NO 0 1 CCF i RD14000 DAVE LCD Schematic 1 All values are for reference only 2 FEMA reference internal number UMS 1010AN ref i Document Number 140158 Tuesday June 27 2000 PAGE 1 OF 4 DRAWING NUMBER A04262 PROCESS SHEET FOR SureSight Revision Logs DRAWN C Fahrenkrug DATE 05 05 00 APPROVED RA DATE 05 08 00 REL TO PROD GR Waclena DATE 05 15 00 REV DESCRIPTION EON INIT DATE APPR Release to Production 5 41366 7 10 2000 THESE DRAWINGS AND SPECIFICATIONS ARE E PROPERTY OF WELCH ALLYN INC AND SHALL NOT
13. corroded or is otherwise irregular If electrolyte leaking from battery contacts your skin or eyes rinse with running water and immediately seek medical attention IPX Not protected against the ingress of water Not for use in the presence of flammable anesthetics ITT Nightscope can not leave Welch Allyn repair facility due to import export regulations It is considered a military device When the device is opened laser emission above the acceptable exposure limit AEL may be present Care must be taken not to look into the beam or project the beam into another person s eye PN 140399 Rev B 13 SECTION 2 SERVICE 2 1 INCOMING INSPECTION LIST When a SureSight Unit is Returned Check 1 Physical Condition of Package and Unit 2 Record the following observations Model S N found on inside of battery door Record Dip Switch Position Does Instrument Power Up Yes No Cal Settings as received Adult Child S W version as received Distance function check Pass Fail Gross Alignment Check Fake eye Cal light symbol ON OFF Cross Hair Quality Good Poor 3 Refer to Section 3 The Customer Complaint and Troubleshooting Guide to localize the problem PN 140399 Rev B 14 2 2 REQUIRED UPGRADES Component to Upgrade When to Upgrade Replace compartment if retainer is too tight or too loose Patient Window Replace as needed if scratched Always replace if before serial 9900594 for 14001 and
14. 0 Standard Mode e Axis Displayed e Resolution of Reading Displayed Hundredths 1 Screening Mode Resolution of Reading Tenths In Child Mode Difference is Displayed In Child Mode Referrals vs AAP guidelines for 3 yr Olds are Noted 0 Optometry Convention e Negative Cylinder Convention 1 Ophthalmology Convention e Positive Cylinder Convention PN 140399 Rev B 36 SECTION 4 SURESIGHT REPAIR INSTRUCTIONS NOTE ALL REPAIR PROCEDURES MUST BE FOLLOWED BY A CALIBRATION CHECK SEE SECTION 2 2 WITH THE EXCEPTION OF SECTIONS 4 12 4 14 IF UNIT IS NOT OPENED 4 15 AND 4 16 LCD Assembly amp LCD Board Bottom Housing Baseplate Assembly Front Insert Assembly amp Fixation Board z 4 Top Housing DSP Board D 4 Rubber Boot PN 140399 Rev B 37 4 1 REPLACEMENT OF BOTTOM HOUSING 4 1 1 4 1 2 Place unit in nest T16556 with bottom housing facing up Remove the 4 T 20 torx screws from bottom housing Gently remove housing It may be necessary to hold the front insert down as the housing is removed 4 1 3 1 Prior to replacement verify the black tape is visible and in its proper location 4 4 1 3 2 Ensure that the bumpers are seated correctly down and completely in their cut out areas in the top housing One of the three bumpers seated in cut out area 4 1 3 3 Replace housing by aligning the front insert and LCD assembly with the guides on the bottom hous
15. PERMISSION OF WELCH ALLYN INC A Release to Production at X10 5 41452 6 9 00 CCF Charging Control 7 9v regulator FID1 FID2 FID3 FID4 FIDUCIAL FIDUCIAL FIDUCIAL FIDUCIAL TPX4 TPX6 TPX8 TP1 TP25 C C E VBATT R92 Q14 Q1 9 33 Ohm D1 Si2301DS MMBT4403 D 4 CMSH1 40M CMSH1 40M DCINCHRG y R93 33 Ohm R2 cxi C57 2K 22uF TPS 25V 22uF 50V TP26 R3 U14 10 7 Ohms LM3620 DCGND TP2 gt ExtDrv EEDE TA em 4 L1 D3 C3 C4 Drive Sink CMSH1 40M TPS22uF 25V TPS22uF 25V 220pf 100V NPO 25V BattS 10uH a C2 D5 TPX3 ame TPS22uF 25V CMSH1 40M 71032 71036 71040 C R71 TPS4 7uF 35V 14v no load 1 4 Volt Cutoff 0 OHM D4 4 2v 107ma CMSH1 40M 3 0v 130ma 8 2 Volt cutoff ESND1 NS C54 4700pF 100V X7R 6 D6 710150 CMSH1 40M IVA 7 5V 8 8v no load R7 Do Not U4 9 4 2v 70ma a 51 1 Ohms Populate R9 3 0v 86ma gt as 8 rr T El 20K C6 d Charge Shutoff Bu a d d VN indicates open collector TPS4 7uF 85V TPS4 7uF 35V DO NOT POP TP5 R11 LT1371 E ej lt 10K VA VA 3 3V NS V et C11 a TPS4 7uF 35V TPS4 7uF 35V C12 274K TPS4 7uF 35V Q2 R17 MMBT4403 047UF 100V X7R 5vO al p R16 i 10K c15 RIS Y Y 1uF 50V X7R C13 NU 2K TRIGGER POWER CIRCUIT 4700pF 100V X7R 45_IMGO 2 MS_veis ime TP7 Q 8 TP8 T Cii VBATT LJ viNsw EI E is NEN MN M dd
16. Place Close to Power MMBT4403 MMBT4403 MMBT4403 d Connector pin 9 __ __ 9 C60 C61 C62 R178 TP20 AuF 50V X7R AuF 50V X7R AuF 50V X7R 47K C C57 ON C58 1 OUF S5V TAJ alias 1uF 50V X7R 6 3v From Imager Board TP 3 3VFIL yy 3 aVFIL uu R128 TP14 4 22K Q4 F oOo MM Ad Place Close to Power GND C63 Imager Connector 2 GND 1UF 50V X7R ronnecton 5 R129 7 1K GND HORIZb_5 E Im Ref CLK 5 3 VERTb 5 7 1D3 TP26 5 TP24 E C R130 Im Ser CLK 5 3 Walon 1K Q5 3 3VFIL IM Ser Data 5 9 43 3VFIL 5 MMBT4401 3 3VFIL WEN 5 A Power MCU gt 3 3VFIL O WEN_5 Km Ser Sub 5 3 3VFIL 9 Cam CS u Cam CS am Staby AD_Clk Return R131 R163 U D 10K R164 100K Laser_U D INC va R165 100K asera ng 15V 1 R48 R166 100K 7 5V 10K 100K 5V D0 3 y D0 3 Di3 y Di 3 D2 3 w D2 3 D33 y D3 3 Di 3 Sy S D4 3 D5 3 D5 3 a EM 24 5V D6 3 y D6 3 oo pp 07 3 y D7 3 EEE ij o e 13 3VFIL RD WRb RD WRb R176 GND TSb 3 3VFIL 10K R167 Rud 3 3VFIL 3 3VFIL R168 100K R169 R170 100K z EE Connect to disable WEN 100K 100K Molex 71220 1000 BGb Cam Stdb Q6 i Q7 Q8 MMBT4403 Q9 EE MMBT4403 MMBT4403 R132 TP35 MMBT4401 R133 R134 1K 1K 1K LCD_GO LCD LEFT Y LCD LEFT LCD RIGHT SXCD RIGHT J Y LCD GO PB1 SW PUSHBUTTON R136 R137 R135 47K 47K 47K Pushbutton allows the Disable_ WEN gt Disable WEN bi unit to be powered up EN zb alle 3 3VFIL Rohm SML 010 MT T86 E 7 d E AA R179 1K To tell when the 3 3v supply is
17. UPGRADE 2 5 1 2 5 2 2 5 3 2 5 4 Make certain the Sure Sight unit is off Connect the RS232 Cable Phone Jack to the SureSight and RS232 Cable 9 pin connector to the PC COM port Upgrade using MS DOS 2 5 3 1 Insert the SureSight Software Update floppy in the floppy drive Open up an MSDOS window and type A without the quotations to switch to the floppy directory and type SETUP 2 5 8 2 The setup script will prompt you for a COM port 1 or 2 and tell you when to power on the unit The progress on the upgrade is given and Software update completed successfully should be shown after the update is completed Upgrade Using Windows 95 98 2 5 4 1 Insert the SureSight Software Update floppy in the floppy drive Click on the Start button and then click on Run Type A SETUP and click on OK 2 5 4 2 The setup script will prompt you for a COM port 1 or 2 and tell you when to power on the unit The progress on the upgrade is given and Software update completed successfully should be shown after the update is completed PN 140399 Rev B 27 2 6 PRODUCT NUMBERING STRUCTURE SERIAL NUMBERING STRUCTURE S N randomized 2 Eye Care Version 0 Primary Care Version NOTE 14001 SureSights should have a 0 in this position NOTE 14011 SureSights should have a 2 in this position Last 2 digits of the year manufactured PN 140399 Rev B 28 2 7 REPAIR PARTS LIST Part Number M11052 V140170 120 10
18. VSLogic To Laser Mini 1K R15 VSLogic Q C6 R14 1uF 25V R12 10k li 50k TP7 TP8 TPQ jg Do not Pop R18 R17 R18 20 20 NG R16 499 LASER INC in iis ctae ME LASER U D LD nn E T T urat LASER CS Do not pop R22 X9314WS 3 gt Molex 71220 0400 R22 10K R23 32 4K l TP5 TP14 VSLaser NE5234 O spares VSLaser m R26 3 3V 180 TP13 ie 4 VPD 4 U1D o VREF U1B NE5234 NE5234 D2 TL431AC R27 2 TC 10k 2 5V Ref VSLaser U8B LMC6762 Notes 1 All values are shown for reference only See BOM for proper values 2 Net names on ground symbols may vary No changes should be made to allocation without rechecking 3 Test Point Cross Reference TP1 VIEW ON OFF TP2 LED TP3 PD Current TP4 GND IP5 VSLaser TP6 VSET TP7 Laser CS TP8 LASER U D TP9 LASER INC TP10 LD Cathode TP11 LASER ON OFF TP12 PD Voltage TP13 VREF TP14 VSLED VSLogic DRAWN DATE E Dickman 03 25 99 APPROVED eer owe pae itle RELEASED DAVE LASER DRIVE Schematic 06 08 00 Size Document Number Rev CCF RD14000 Date Tuesday June 27 2000 Sheet 1 of 1 Release to Production at X10 added LED s for charge detect 5 41452 6 9 00 CCF FIXATION LED S FID1 FID2 FID3 FIDUCIAL FIDUCIAL FIDUCIAL R5 TP1 3 3V 150 O Di TP2 Rohm SML 010 MT T86 JP1 524 35 2891 3 3V TP4 Corr WEILE USBOE ES i USBRXD a USBTXN O USBTXP Oj 5 USBRXN Oj 6 USBRXP o 7 Maximum lea
19. and other settings of the camera are controlled by the DSP board through a serial port and a digital pot on the camera board These settings are also set during the factory calibration Viewing System The purpose of the viewing system is to create a visible image which can be used to align the product with the patient Because the laser is invisible it can not be used for aligning Instead the viewing System produces a visible crosshair target which is aligned so as to be in the same position as the invisible laser beam at the in range working distance In this way when the practitioner aligns the crosshair with the patients eye they are also aligning the laser which is required to make the measurement It is critical that the viewing crosshair be aligned to the laser beam at the proper working distance The source of illumination for the viewing system is an LED located on the LED mini board This is a traditional LED used to backlight a crosshair which is cut into a cup mounted over the LED This mini board and cup assembly is mounted to one end of the viewing tube which contains optics required to magnify and project the crosshair to the patients position 40 cm away The LED mini board is connected to the laser drive board through a 4 position flex cable The actual drive for the LED is on the laser board and is turned on and off by the DSP using a single control line PN 140399 Rev B 8 PC BOARD ASSEMBLIES DSP Board The DSP board inclu
20. and wire harness assembly 4 6 4 Lift the o ring away from any wires and clip with a small pair of cutters Be careful not to damage anything around the o ring especially the gold contact and wire assembly 4 6 5 Remove o ring with tweezers As much as possible pull o ring away from gold contact 4 6 6 Replace bottom housing See Section 4 1 PN 140399 Rev B 4 7 REPLACEMENT OF THE LCD ASSEMBLY 4 7 1 4 7 2 4 7 3 4 7 4 4 7 5 4 7 6 4 7 7 4 7 8 4 7 9 Place unit in nest T16556 with bottom housing facing up Remove the bottom housing See Section 4 1 Remove glue or kapton tape on LCD flex and disconnect the flex from the DSP board See Section 4 2 Slide the LCD assembly out of the unit Make sure to copy over the dip switch settings from the old LCD Replace the LCD Assembly by sliding it back into its original place 4 7 6 1 Slide the assembly back into place by lining it up with the guides on the top housing Reconnect the LCD flex to the DSP board then using kapton tape only tape together the flex and the connector Replace bottom housing See Section 4 1 One the unit is reassembled download software See Section 2 7 PN 140399 Rev B 45 4 8 REPLACEMENT OF LCD BOARD 4 8 1 Remove LCD Assembly See Section 4 7 4 8 2 Remove the 4 screws 4 8 3 Remove the LCD board and replace Make sure to transfer buttons to new assembly Also copy dip switch settings fro
21. rotate by gravity alone when properly engaged over a battery Retainer should not move when a battery is in place Make sure the dip switches are set correctly Refer to the Device configuration table below Eye Care Unit does not Show Axis Dip switches are at a the wrong settings PN 140399 Rev B a Bend contacts up to a normal position with dental pick b b Return unit for repair of the battery compartment sub assembly Replace power Board Assembly Replace Front Insert Assembly NOTE Wire Harness must be replaced if Front Insert Assembly is replaced a Set dip switches to the a correct setting b Send Unit in for repair Replace the LCD Assembly b Replace the DSP Board 33 DEVICE CONFIGURATION TABLE SureSight performance is controlled by the type of instrument Primary Care Unit or Eye Care Unit the dip switches accessible through the battery compartment located underneath the battery compartment on the LCD board see figure below and the Adult Child Mode button located on the LCD Display The following table and diagrams show the combinations of settings and the corresponding performance it determines On i There are a total of 8 dip Position switches but only the first 3 are used Each are labeled with 1 J H 1 i H 1 H their corresponding number Push in to switch to Position 1 and Pull out to switch to Position 0 Position 0 Inside of Unit Dip Switch 1 Dip Switch
22. the top housing by lining up the bumpers in the guides on the top housing Ensuring that the battery compartment assembly wires are tucked underneath and that the ultrasonic sensor wires are free and out of the optical pathway Replace LCD assembly See Section 4 7 and bottom housing See Section 4 1 Once the unit is reassembled download software See Section 2 7 49 4 11 REPLACEMENT OF THE ALIGNED BASEPLATE ASSEMBLY 4 11 1 Place the unit in nest T16556 with bottom housing facing up 4 11 2 Remove the bottom housing See Section 4 1 DSP Board See Section 4 3 front insert assembly See Section 4 5 LCD Assembly See Section 4 9 and Power board See Section 4 11 4 11 3 Remove the rest of the baseplate assembly 4 11 4 Remove the 4 bumpers from the old aligned baseplate assembly 4 11 5 Place the new baseplate assembly on baseplate support fixture T16542 4 11 6 Write the Product Serial number located on the battery compartment door on the new baseplate next to the baseplate serial number Then write the new baseplate number on the label in the inside of the door of the battery compartment 4 11 7 Replace the power board to the new aligned baseplate assembly See Section 4 11 4 11 8 Connect the battery compartment wire assembly to the power board 4 11 9 Turn the baseplate assembly over and place on baseplate support fixture T16541 4 11 10 Replace the DSP board See Section 4 3 Attach the LCD assemb
23. up A 3 31 y A 13 21 3 3V U99 9 If ASIC Populate Jumpers Remove Ul10 M48T37V r If FPGA Remove jumpers Populate U10 A31 A Port Pins must be HvV R39 A0 16 SAL DL lt DATA 0 31 a d Na 9 MEU N45 ia B DATAO meet the 5 Volt N55 2 5 DRA reguirement of R73 N 8 0 g these signals 1K 5V DO NOT POPULATE R39 R41 R58 N 4 DATA A ae Z DATAS NC AN an H2 BATA 7 3 3V pees im Ser Sib 5 o Sus ES otr m ser Data 1uF 50V X7R 8 Im_Ser_Data_3 3 m Ser CLK 5 V 7 Xicor X9314 CS is active low sv From Laser Board Im Ser CLK 3 40 O L CCD_Ref_CLK_ gt sees RTC Csb A TC Csb chee LASER INC A ane LASER U D VERTb 3 gt weo yy WED LASER_U D QCASER ONTOFF 3 LASER_ON OFF 4 HORZb3 D im Ref CLK 5 LASER_CS gt LASER 5 LED ON OFF gt 6 7 8 HORIZb_5 Molex 52746 0890 74ACT244 From Power Supply and Distance Board 3 3V 43 3V 3 3V 3 3V 3 3V 3 3VFIL 3 3 O O Q O 3 3VFIL O R162 R161 LCD DIP GND LCD VSS LCD BUTTON GND a a 3 3VFIL X T pae 15V R15B R157 TV TP18 TP17 TP16 TP15 100K 100K From LCD pape BV 5 Ll OF OF Li A LCD VSS o 8 3 3V i Ua 5 FEDD lu _ rr sVBATT i LCD Di m AAA A TP40 ON LGD_D2 E From Fixation Board m 13 D 0000000000000 LLL LLL LED og LoBati DEAD i LCD_D5 5055550 5 55555555555 LOBAW vexing XMIT 13 LCD D6 ee Dist Xmit AS ANKING 1e LCD_D7 a Blanking gt 8 HO 17 LCD OB N o Dist Echo 7 CBS WE d 0 O
24. 2 Dip Switch 3 A C Button Resolution Cylinder Difference Range min Referrals Resolution Unit Type of Reading of Reading Setting Setting Setting Setting Displayed oes Convention Displayed Sphere Marked with Comput d ZU lll LBT OOOq MR chs o No Negative veo 48 TE NA NA Adit No Positive No a SET No Positive Yes 0 14 SEXUM Nc Yes No les No Yes No_ Ej 02 No Yes Yes No L Yes No Yes No oor 0 Sid Adult o IE ix 1 8 Adult o 14 cnud PN 140399 Rev B 34 PRIMARY CARE DEVICE CONFIGURATION Resolution of Reading Displayed Tenths Measurement Range 4 5D to 5D Dip Switch 1 Dip Switch 2 Dip Switch 3 A C Button A Adult Mode C Child Mode e Difference Displayed e Referrals vs AAP guidelines for 3 yr olds are noted e Uses child calibration curve N A N A 0 Optometry Convention e Negative Cylinder Convention 1 Ophthalmology Convention e Positive Cylinder Convention PN 140399 Rev B 35 EYE CARE DEVICE CONFIGURATION Measurement Range 5D to 5D Dip Switch 1 Dip Switch 2 Dip Switch 3 A C Button A Adult Mode C Child Mode e n Screening Mode Difference is Displayed e n Screening Mode Referrals vs AAP Guidelines for 3 yr olds are noted e Uses child calibration curve 0 Measurement computed to precision 1 s Measurement computed to precision
25. 2 H3 D18 PE ja HIPS WO A8 IP BO IWPO VFLSO K47D17 EC a DIPSW1 C8 IP B1 IWP1 VFLS1 H2 D16 u2 en Nj J4 D15 e TC ee J3 D14 pig baat mm n zm R25 R26 R27 C4 WAIT B M3 D13 ma Deaf EN L 20K 20K 20K M4 D12 ma Datat TN K1 D11 Fn baai EN E K3 D10 EKa Datarg TN K2_D9 e bas 3 pdi Hd B8 ALE B DSCK AT1 M27D8 E17D7 Ei a um F1 D6 EL Data _ AH 4a 3 3VFIL H1_D5 hi Datas ooo NN B6 OP3 MODCK2 DSDO L2 D4 He Dead ee 93c D6 OP2 MODCK1 STS 317D3 m A aa 327D2 42 AAA CN D11 UPWAITA GPL A4 L1 D Fy Datad T B13 UPWAITB GPL B4 M1 DO 3 3VFIL B11_BR 222222 7 C13 RD WR 3 3VFIL LDO MSB A LCD_D7 H4 R4 PD15 LD8 VD7 U6 LCD D6 14 T3_PD14 LD7 VD6 LCD_D5 L2 P5 PD13 LD6 VD5 29LV400 800 TSOP LCD D4 3 R3 PD12 LD5 VD4 TSOP48 LCD D3 42 N5 PD11 LD4 VD3 D16_WEO BS ABO IORD LCD D2 1 T2_PD10 LD3 VD2 E16 WE1 BS AB1 IOWR 2 LCD_D1 P4_PD9 LD2 VD1 D15 WE2 BS AB2 PCOE gt LCD DO 1 T1 PD8 LD1 VDO F13 WE3 BS AB3 PCWE 5 LCD RE 22 R2 PD7 LDO FIELD z LCD SB At R1 PD6 LCD AC LOE BLANK E13 GPL AO GPL BO LCD WE Le P2 PD5 FRAME SYNC C16 OE GPL A1 GPL B1 LCD CS P3 PD4 LOAD HSYNC C15 GPL A2 GPL B2 CS2 44 N4 PD3 SHIFT CLK CLK D14 GPL AS3 GPL B3 CS3 E pee C12_GPL_A5 DMA_REO1 Ata R16_PC15 DREQ1 L1ST5 3 3VFIL Fix_Latch a YN T16_PC14 DREQ2 RTS2 L1ST6 3 3VFIL Fix_Clock HA 3 P13_PC13 L1ST7 U7 BYPASS U6 BYPASS CAPS E it ee C intai i eat a nd go UUSBRXF TET UU OL USB RXN Ra pe PR C10AUSBRXN TGATE1 mM c12 G UF 50V X7R TR
26. 6100 2 106100 42 140071 30 1750 140073 04 1500 140127 501 140129 501 236992 536000 72420 140126 501 106102 27 106124 4 140020 3 140103 2 140040 140041 501 140071 30 2500 140280 504 106100 42 140071 30 4375 106102 7 106100 5 140071 08 3375 140250 503 140077 3 140130 501 140072 140074 3 140146 1 140068 M11478 140022 2 140090 140131 501 106100 53 140032 140167 140168 M11416 PN 140399 Rev B Number 9X12POLYBAG i 18 14 29 This guide should be used for phone personnel as well as by repair technicians to facilitate quick diagnosis of problems Section 3 Chief Cause Complaint Does Not Battery Power up not No LCD Display No LCD Display charged No Data stored in memory Defective LCD PN 140399 Rev B SureSight Troubleshooting Guide Look For Verify battery is installed correctly orientation in device and battery retainer is latched over battery See label and arrow on battery indicating direction of proper insertion Early versions do not have the battery rib to prevent mis insertion Check for constant or blinking battery symbol on the LCD Constant no charge Blinking 10 to 15 minutes of charge left Ensure that test was taken within last 5 minutes otherwise data is not stored Ensure that test was taken within last 5 minutes otherwise data is not stored a Install battery correctly per label Charge battery overnight in stand with 71040
27. 804 DGND3 Fe IM SER STRB 017 CONTROLLER Ua ee o ing R14 0 Ohm RG Reset Gate O18 F AUF 16V XTR DGND5 1uF 25V AGND TIMING 001uF 50V X7R AGND J J CXA1690Q 5_IMGO q DGND5 Teas DGND5 73 C20 5 IMG R30 T TuF 25V 01UF 50V X7R a 10k ae C22 AGND Stdby 15V Tp17 RZE 5 T AGND uF 16V X7R VERTB 5 ICX084 TP18 L MMBD4148 ir q AGND pas Tpas Tess Tpa7 4 US TP38 TP39 TP40 TP41 AD CLOCK 5 L i Mo 1uF 50V X7R 18V VIDEO OUT g 7 R18 R1 DGND5 D0 3 47pF 10 LS 100K C27 OUTPUT ENABLE D1 3 DGND5 p 2200pF 1 00P X7R 1M D2 3 i ar CHIP ENABLE D3_3 o o 2 52 o D4_3 A D D 01uF 50W X7R AMET O R3 7 E CXD2434T DGND5 DGND5 DGND5 T DGND5 DGND5 TP20 D6_3 43 3V d MSB D73 Q DGND5 VAT 30 DVDD AD CLOCK 5 L pvpp2 5 DGND5 c31 1uF 16V X7R abb C34 10uF 10V AVDD 20 d 33 1uF 16V X7R TP31 AVDD2 ig 22uF 10V I D AGND TE VRB VRB RESET H as VRB TESTMODE He ie C36 Q fut HSVIXTR HL DGND3 10uF 10V ae ts loo 14 RA C38 C39 AGND 1 5 50 1uF 16V X7R 22uF 16V A 21 y 8 A 28 I DGND5 a 6 40 d META 26 DGNDS HORIZB_5 1 CXD1267AN DGND5 rag 4 TM REF CLK_5 VERTICAL 0 Ohm VERTB_5 DGND5 1D3 R21 0 Ohm CLOCK CXD2311AR AGND DGND5 DO NOT POPULATE R21 O TP42 IM SER CLK C40 7 5V IM_SER_DATA WEN3 zn AUF S0V X7R IM_SER_STRB ES gt Stdb DGND5 DGND5 45 IMG 7 5V 15V U D Q Q Q INC OO Loo ooo LY DO 3 DI 3 D2 3 D3_3
28. BE REPRODUCED OR COPIED ED AS A BASIS FOR MANUFACTURE OR SALE OF EQUIPMENT OR DEVICES WITHOUT WRITTE ERMISSION PAGE 2 OF 4 DRAWING NUMBER A04262 GENERAL These revision logs are maintained for reference and do not contain every single change which has been made to this product It is intended to provide a list of major changes which are relevant to the repair and troubleshooting of units Any critical product traceability should be done through the Welch Allyn ECR documentation Unless otherwise specified e All changes refer to both eyecare and primary care units S N s for each model are given in the S N log e S N s and Dates refer to best estimate of implementation Units which are very close to this transition may or may not have been run to the new change and should be checked for compliance An estimate of 2 weeks or 20 units would be an expected potential overlap e lt is the judgment of the ECR originator through the ECR process to determine if a change merits inclusion on this list Changes may also be added after the ECR as long as the relevant dates and S N s are supplied e Changes are noted under each category that they impact Most will occur in at least two categories THESE DRAWINGS AND SPECIFICATIONS ARE E PROPERTY OF WELCH ALLYN INC AND SHALL NOT BE REPRODUCED OR COPIED ED AS A BASIS
29. C Cable TI6934 Fake Eye Set Reguired Refractive Reading Accuracy T17008 Night Vision Scope Version 2 WA part 140381 Hand Strap Replacement Tool Replace Hand Strap TI6556 Net 3 Required NOTE REPAIR STATIONS WILL BE REQUIRED TO HAVE A STEP DOWN TRANSFORMER PN 140399 Rev B 16 Table 2 3 2 Tier 2 Unit Repairs Major Systems Tier 2 tooling is required to equip a site to perform internal repairs These repairs are limited to major subsystems Component level repair is not available for this product Bold part numbers indicate parent items Non bold items below are included in the parent set Tier 2 requires Tool Set T17010 which consists of the following PART NUMBER DESCRIPTION OPTION NEEDED TO VERIFY T16936 Tier 1 Plate with Nest Camera Mounts Required Alignment Refraction Distance LESE EN P PCI 1411 T17019 778 044 03 T16729 WA part 140104 3 WA part 140104 2 WA part 880181 5370 268CP 777154 01 Flash point 128 Fluke Model 73 WA Part s 73210 07800 Lighting for Fake Eye w fiber optic bundle Reauired Alignment Verification 73305 73308 WA Part 387001 IMAQ 1 117162 117164 WA Part 73305 WM 144 1950 116545 TI6934 T17008 WA part 140381 TI6556 T1562 23 1 5 2 0 in Ib Required Attachment Ea Phillips Bit for 4 screw 1 5 16 length Required Attachment Fc al T1562 12 2 75 3 75 in lb Attachment Phillips Bit for 4 screw 1 5 16 length Required Attachment fr
30. C51 4 N00254 VHCurrent 1uF 25V R22 em 14953DY T i TPS22uF 25V TPS22uF 25V RX98 U8 45V 45HV NetSeparator C19 L3 C21 C20 Q Q VBATT TPS22uF 25V 100uH TPS22uF 25V TPS4 7uF 35V TP9 VBATT 9 HCGND U9A E 25V 25V 8 5V 5_IMG E Q 19925DY RX1 R86 U10 0 Ohm 499k LTC1435CS RX97 D7 VBATT C22 NetSeparator CMSH1 40M 68pF 100V NPO R87 d U9 pose 102k Yo TLC555 VBATT C23 RX95 CMSH1 40M c ps 4700pF 100V X7R RUN SS NetSeparator an lol R88 3 3V T 6 47K R24 ITH R25 Q TP32 10K U9B 047 ohm TP10 C55 Q17 E C24 S19925DY a 1uF 50V Powerup_Dela Si2301DS 220pF 100V NPO R90 C27 C28 R89 2K C26 4 BE D14 2K Q18 47pF 100V NPO CMSH1 40M C52 MMBT4401 NZ TPS100uF 16V TPS100uF 16V 1uF 50V D9 C31 BOOST Men 1000pF 100V X7R R26 WY R91 VOSense VOSENSE INTVCC C29 100K 10K 100pF 100V NPO IVA C30 C53 100pF 100V NPO 01uF 100V X7R SY SGND SENSE VBATT Q SENSE RX96 Ped LVBATT m HCGND NetSeparator 56 2K Q TP12 L R29 NY 47K Q5 DCINUNPLUGGED i2301DS R32 DCINUNPLUGGED y R31 2K 2K Q6 MMBT4401 R33 10K VBATT Q RX s are temporary net separators NY R34 VBATT TP14 47K 9 ON Q7 R36 RX2 Si2301DS 2K 0 Ohm R35 Q8 2K e MMBT4401 gt gt gt GND_SIGNAL PGND2 PGND1 HVGND ATTGND ON 2 R37 10K All these individual gnd nets are NU A all connected at a single point on S7 Low Battery Warning the actual board This is just to 5y reference that Originally t resistors were used as net Low Battery Detect 3 3V separators Notes 1uF 25V 1
31. CTURE OR SALE OF EQUIPMENT OR DEVICES WITHOUT WRITTEN PERMISSION PAGE 6 OF 6 DRAWING NUMBER 4 A04260 MAGNIFICATION MEASUREMENT The purpose of the magnification measurement is to determine the pixels per millimeter of a particular optical camera setting This magnification is multiplied by the specification in millimeters to convert to specifications in pixels for that station Procedure 1 ce had Place a metric ruler as close to the plane of the fake eye pupil as possible and placed across the pupil so that the numerical labels on the ruler can be seen for at least 30 mm The ruler tick marks should be clearly visible and the ruler should be as straight as possible Using FPGEYE software grab a picture of the ruler and save the image Open the image using Vision Builder PC Paint or equivalent Count the number of pixels which are visible over a 30mm span of the ruler Compute this number 30 to determine pixels per mm magnification THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN INC AND SHALL NOT BE REPRODUCED OR COPIED OR USED AS A BASIS FOR MANUFACTURE OR SALE OF EQUIPMENT OR DEVICES WITHOUT WRITTEN PERMISSION REV D2 SLR 56MG Y Notes DESRCIPTION 71220 400 MES Release to Production at X5 5 41452 6 9 00 1 All values are shown for reference only See BOM for proper values RAWN DATE Dickman 03 29 99 8
32. D4 3 TP23 TP24 TP25 43 3V D5 3 D6 3 TP26 D7 3 a mp LJ di E E TEST POINTS for reference only WEN5 WEN3 ali E TP1 VIDEO OUT NEAR Ul PIN 7 TP32 TP2 IM REF CLK 5 ADB AGND DGND5 TP3 AGCMAX TP4 CS AD CLOCK 5 AD CLOCK 3 TP5 U D TP6 INC TP7 V3 R27 R28 R29 TP8 AGCCONT 0 Ohm 0 Ohm 0 Ohm TP9 CCD OUT TP10 H2 TELL H1 TP12 IM SER DATA TP13 IM SER CLK TP14 IM SER STRB DGND5 AGND DGND5 DGND3 TP15 WEN5 TP17 HORIZB 5 mes TP18 VERTB 5 Notes Net Separators nets are joined in copper D AES S TP21 DGND5 TP23 5_IM l All values are shown for reference only 1924 TD TP25 F15V See BOM for proper values 1228 13 3V TP AGND LI LI LI LI TP2 R 2 Supply integrity is extremely important Tp 23 E ve Togar TP V on this board Netnames on ground a VR TP32 AD CLOCK 5 symbols vary No changes should be TP33 Stdby q q q TP34 Df made to allocation without rechecking TP35 D3 TP36 D5 TP37 D7 TP38 DO TP39 D2 TP40 D4 TP41 D6 TP42 ID3 DRAWN DATE D Fallat 04 19 00 CCF 06 08 00 itle RELEASED DAVE Camera Schematic MKT 06 08 00 Size Document Number Rev dai Ey i CCF RD14000 Date Tuesday June 27 2000 Sheet 1 of 1 3 3VFIL jac Place close to power pins of U4 FID1 FID2 FID3 5V 3 3VFIL FIDUCIAL EJDUCIAL EIDUCIAL A A 45V A Release to Production at X10 5 41452 6 9 00 CCF C1 C2 C3 C C5 C6 C7 Ut
33. ERTY OF WELCH ALLYN INC AND DESCRIPTION DATE APPROVAL SHALL NOT BE REPRODUCED COPIED OR USED AS THE BASIS FOR THE MANUFACTURE OR THE SALE OF EQUIPMENT OR DEVICES WITHOUT WRITTEN PERMISSION OF WELCH ALLYN INC Release to Production at rev X9 Added testpoints for D0 D7 TP34 TP41 Updated testpoint list on bottom of schematic Added testpoint to stdby TP33 and ID3 TP42 5 41452 6 9 00 5 IMG 5F O L1 C3 9 01uF 50V X R 10uFg16V 6 8uH 2 S 1 6 TP1 C5 CAM VID 1uF 16V X7R vineer DRVOUT R1 PB REC 47 5K CLPDRV FS 5 IMG O C6 C7 C8 01uF 50V X7R 22uF 16V 01uF 50V X7R CCDLEVEL C9 01uF 50V X7R q q O DGND5 DGND5 RB 10 VRB VRT R3 AGND AGCCLP 2 2K Check connections for VW VH VL Vcc 1 40 15V C10 IM REF CLK 5 9 01uF 50V X7R OFFSET 8 C11 3 3V 3 3V 5_IMG TP30 01uF 50V X7R S4 PBLK Bank TP3 O O O ial C12 AGCMAX a BF 3 3V 8 XV1 22uF 25V 18V 4 xag Q Q TP4 TP5 TP6 TP29 AGND R9 Ll R11 luo we y a aso AMPLIFII di an uk be ws Cd VA NES 4 XV3 01uF 50V X7R TP7 R7 S TP8 8 INC Q TP9 AGND AGND U D 7 SHD p E Q1 4 DGND5 R8 D1 8 AS MMBFJ309LT Serial ports internally pulled up m AS2 AGND R12 Do not populate R31 if U3 is ne aaa TET on AUS o Mee e TO CAMERA TP12 IM SER DATA R13 3 48K A with the Xicor X9314WS 3 TP13 Ll E l 7 z the Dallas DS1
34. FOR MANUFACTURE OR SALE OF EQUIPMENT OR DEVICES WITHOUT WRITTE ERMISSION PAGE 3 OF 4 DRAWING NUMBER A04262 Table 1 Serial Number Revision Log Recommended 14001 S 9900001 Initial Release PE 14001 S 9900480 Power board charge current Change of power board is c increased Increased to allow international optional DH SF DDEG charging 220V and use of unit in Japan 100V This increases domestic to approximately a 9 hour charge 14001 S 9900395 Units do not have o ring assembled in front Remove O ring 14011 S 9920000 USB SS Ony Replace distance wire assembly if it is disconnected from the contact sensor at anytime 14001 S 9900604 Anti reverse battery insertion compartment Replace battery compartment 14011 S 9920287 14001 S 0000094 New Battery Compartment Retainers Only if battery retainer is 14011 S 0020222 with screw attachment excessively loose replace battery compartment 14001 S 0000018 New Tube Design solid apertures Upgrade plate to new design 14011 S 0020093 14001 S 0000007 Changed Patient window to harder coated If window is excessively 14011 S 00200043 version scratched replace with new window 14001 S Charge LED indicators added to fixation board Optional upgrade if customer 14011 S has charging related Future S N tbd complaints THESE DRAWINGS AND SPECIFICATIONS ARE E PROPERTY OF WELCH ALLYN INC AND
35. HE PROPERTY OF WELCH ALLYN INC AND SHALL NOT BE REPRODUCED OR COPIED OR USED AS A BASIS FOR MANUFACTURE OR SALE OF EQUIPMENT OR DEVICES WITHOUT WRITTEN PERMISSION PAGE 3 OF 6 DRAWING NUMBER A04260 2 BEAM SPLITTER CAMERA ALIGNMENT The purpose of the beam splitter alignment is to place the return image in the center of the camera active area This insures that the margin of aiming is as equal as possible in the up down right and left directions For example if the beam splitter image is aligned toward the top of the camera active area any slight aiming above this will drop the image off the camera resulting in no readings To facilitate measurement of the image position a green box function is projected by the software in the exact center of the camera active area and in a size which represents the 4 5mm image For reference the camera active area is 696 by 494 pixels The green box is 300 by 300 pixels and positioned with a center of 348 247 to correspond with the center of the active area Image position accuracy is measured in number of lines outside the green box Given the pitch of the lenslet each line outside the box corresponds to 1mm of offset in the position of the center of the image compared to the center of the camera active area Figure 2 THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN INC AND SHALL NOT BE REPRODUCED OR COPIED OR USED AS A BASIS FOR MANUFACTURE OR SALE OF EQUIP
36. ICATIONS ARE E PROPERTY OF WELCH ALLYN INC AND NOT BE REPRODUCED OR COPIED OR ED AS A BASIS FOR MANUFACTURE OR SALE PMENT OR DEVICES WITHOUT WRITTEN PERMISSION A04187 Appendix 1 Refraction Boundary Limits Refer also to Fake Eye Aspec for additional specifications 3 p 1 7 i 5 2 E 7 1 e Pal i le 3 q q q q 25 8 12 8 and ils not tested in Produ tion MEA 22 101 52 BO p qe i E n O D O E DRAWINGS AND SPECIFICATIONS ARE E PROPERTY OF WELCH ALLYN INC AND NOT BE REPRODUCED OR COPIED OR ED AS A BASIS FOR MANUFACTURE OR SALE PMENT OR DEVICES WITHOUT WRITTEN PERMISSION PAGE 9 OF 9 DRAWING NUMBER A04187 Notes Due to the large variation in parameters which determine the refractive values sphere cylinder variation from lens value distance to wheel exact alignment to lens center unaccounted for aberrations in lenses ND power variation retinal material variation fake eye actual dimensions etc deterministic methods do not yield expected values with an acceptable degree of accuracy Consequently boundaries require correlation to positive clinical performance and are not deductively linked to the lens value placed in the wheel position To revise or reset boundaries if tester or wheel are changed there are two possibl
37. IG_A s test point must be Blanking E El R8 PC9 CTS2 ys AuF 50V X7R i C14 C15 lled high 3 3V n N8_PC8 CD2 TGATE1 1uF 50V X7R 1uF 50V X7R Es MEU USB TXP 15 T5 PC7 USBTXP 352 USB TXN AD N6_PC6 USBTXN o BGb 3 3VFIL 43 3VFIL Dist Echo SERES P6 PC5 LTTSYNCA SDACK1 BBb ep A A Spkr_CS T4_PC4 L1RSYNCA y A BBb R174 R33 E B45 112 TCK DSCK a Note PowerPC B t Significance R12_TMS E15_TSIZ1 REG ld ae R11_TDI DSDI 5 R34 p A N12 TDO DSDO 55599 P16 PA15 USBRXD Fp USB RXD Lt A31 Data31 Least 138 C A10_FRZ IRQ6 R15_PA14 USBOE PH gt USB OE MEN P11 TRST R14 PA13 RXD2 FFB IRD RXD rp4s R13 PA12 TXD2 B KIRDATXD 1 3 3VFIL AO0 Data0 Most 3 3VFIL TP4 O gt gt DIPSW3 N10_PA9 L1TXDA SMRXD2 T9_PA8 L1RXDA SMTXD2 T8_PA7 CLK1 TIN1 L1RCLKA BRGO1 U7 P8_PA6 CLK2 BRGCLK1 TOUT1 Power_MCU is T6_PA5 CLK3 TIN2 L1TCLKA BRGO2 Power_Fix MT4LC1M16E5TG 6 3 3VFIL a R6_PA4 CLK4 BRGCLK2 TOUT2 Disable_WEN gt gt DIPSWA4 MT4LC1M16E5TG 6 TPs O HY SRESETb DSCK R107 2 0K Datat Te7 LI R109 2 0K A bid AAA Diii N14 PB31 SPISEL LCD A FY Sm ger Sir 3 HY 20K pr ues P15 PB30 SPICLK Im Ser CLK 3 a P14 oer UU R115 2 0K D P14_PB29 SPIMOSI 2 Dist_Xmit a a REED HRESETb T15 PB28 SPIMISO 7 Laser CS Im Ser Data 3 TP9 O T14_PB27 BRGO1 I2CSDA Gan 0S Laser_CS EE DSDI P12 PB26 BRGO2 I2CSCL Fy Cam CS TP10 N11 PB25 SMTXD1 RS232 TXD T11 PB24 SMTRXD1 Hi SbACKi R 232 RXD T10 PB23 SMSYN1 SDAC
38. K1 EL R9 PB22 SMSYN2 SDACK2 FA gt gt Laser Inc TP11L 4 R7 PB19 LIST1 LCD B E Laser ON OFF NEN b P7 PB18 LTST2 RTS2 N LED ONOFF U4 pin 213 was pulled up and U4 pin 191 was pulled down D er NON B EN to reflect changes made to the green board This is not the 3 AAA 3 3VFIL y same as the 2D scanner final design b rates ll D R36 Q Changed Spkr Beep to Speaker to match fixation PCB de lr Me 299993 SUT EB 6 7 _KR RETRY IRQ4 SPKROUT D 7 P A D5_TEXP s pp M cee aK 47k 10 P 1K 1K Debug BDM PINOUT DATA 0 31 1 FRZ or VFLSO TP10 2 SRESETb TP9 3 GND TP5 DRAWN DATE 4 DSCK TP11 E Dickman 03 25 99 5 GND TP5 7 HRESETb TP7 CCE 6 9 00 8 DSDI TP12 itle 9 Pull to 3 3V with 100 Ohms TP56 RELEASED DAVE DSP MCU Schematic 10 DSDO TP13 6 9 00 Size Document Number Rev MKT ENGINEER PROJECT NO 140156 A CCF RD14000 Date Tuesday June 27 2000 Sheet 1 of 2 7 5V aS ETA o 4uF 25V TAJ C53 1uF 25V TAJ 1UF S0V X7R 16v HuF 50V X7R 10v VBATT FID4 FID5 FID6 9 FIDUCIAL FIDUCIAL FIDUCIAL we VBATT VBATT VBATT VBATT BAT A Place Close to Image ee GN in 1 cyd SE PE z Place Close to Imager PARAE S SE Place Close to Imager Connector Pin 1 R93 R94 R95 Connector Pin 2 1K 1K 1K R125 R126 R127 VBATT TP12 1K 1K 1K K1 Q1 K2 Q2 K3 Q3 TP13
39. MENT OR DEVICES WITHOUT WRITTEN PERMISSION PAGE 4 OF 6 DRAWING NUMBER A04260 Row Measurement The measurement of rows outside the box on any side is as follows Only rows which are three or more spots are considered a row If the row sits on the green line it is counted as a half row If the row is fully outside the line it is counted as a full row Figures 2 shows some examples of row counts Figure 3 Figure 4 Fails at Alignment station Pass at Alignment station Pass at Final Tester Pass at Final Tester a Allowable image rows outside the green box AlignmentstationPixels AlignmentstationPixels Pixels TIT T Setting Final Product Specification Repair Specification 3 MIRROR ALIGNMENT THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN INC AND SHALL NOT BE REPRODUCED OR COPIED OR USED AS A BASIS FOR MANUFACTURE OR SALE OF EQUIPMENT OR DEVICES WITHOUT WRITTEN PERMISSION PAGE 5 OF 6 DRAWING NUMBER A04260 The purpose of the mirror alignment is to place the crosshair image on top of the laser at the nominal working distance This insures that the when the physician aligns the crosshair with the patients pupil he is also aligning the laser to the pupil This is necessary because the laser is not visible and can not be aligned without an alternate means As noted below the alignment station setting specification is 41 mm from the pixel center This is to insure that it
40. OF WELCH ALLYN CORPORATE OPTICS GROUP SS ST UN C OTHER END OF FLEX CONNECTS TO DSP PCB ASSEMBLY NOT e ee Suresight CAD SOFTWARE PROE DO A MATERIAL SHOWN 7 CIDS UENIRE PRO E FINAL ASSEMBLY VIEW WTTE EAR ERT DOOR FNeMOYED UNLESS OTHERWISE SPECIFIED DRAW ENG NO REV ete ARE IN 40000 J XXX a8 INCHES ANGLES 42 cut esed gt Sheep Toi 8 1 6 5 4 3 2
41. S E DRAWINGS AND SPECIFICATIONS ARE NOT BE REPRODUCED OR COPIED OR ED AS PMENT OR DEVICES WITHOUT WRITTEN PE ISSION E PROPERTY OF WELCH ALLYN A BASIS FOR MANUFACTURE OR SALE INC AND A04187 A camera setting at nominal as determined in prior steps Align unit with glare and image as central as possible preferably within the green box causes image to be clipped e With 9 ND filter present refract the zero eye 3 and 6 together position Reduce 6 ND filter 4 or more lens failures equal a Refract all remaining lenses and compare to limits as fail described in Appendix 1 Values to be within attached boundary limits Due to alignment variations up to 3 failures are allowed for a unit to Pass the boundary tests 11 CHARGE CURRENT For Repair Spec s see Service Manual Connect current meter in series with battery Note this current will be connection larger than actual charge current See Aspec specified on BOM for proper derivation Attach a 71040 to charging jack Note battery connection must be made prior to attachment of 71040 Measure the current through the current meter Requirement 200mA gt I 2 150mA ntended to correspond with 150mA 12 LOW BATTERY FUNCTIONS Not required for Repair e All voltages shown below are referenced to the power board If voltage drop occurs between supply and u
42. WER BOARD 4 10 1 4 10 2 4 10 3 4 10 4 4 10 5 4 10 6 4 10 7 4 10 8 4 10 9 Place the unit in nest T16556 with bottom housing facing up Remove the bottom housing See Section 4 1 front insert assembly See Section 4 5 and LCD assembly See Section 4 7 Remove the baseplate assembly along with the LCD assembly and the front insert assembly from the top housing Turn baseplate assembly over Disconnect the battery compartment assembly wire connection and fixation wire assembly from the power board Place the assembly on the base plate support fixture T16542 Disconnect power flex from the power board Remove the 4 screws from the power board Replace the power board 4 10 9 1 Attach the new power board so that the battery retainer clip is closest to the battery retainer side and the flex insert is closest to the open slot of the alignment plate Torque to 1 5 2 0 in lb using torque driver T1562 23 See Drawing 140000 Appendix D 4 10 9 2 Reconnect the battery compartment wire assembly to the proper connection on the power board 4 10 9 3 Reconnect the power flex to the new power board 4 10 9 4 Reconnect the a new wire harness assembly to the proper connection the power board NOTE You MUST replace the wire harness whenever it is removed from the sensor contacts It is a single use spring clip only 4 10 10 4 10 11 PN 140399 Rev B 4 10 9 5 Place the assembly back into
43. Welch Allyn service Manual SureSight Welch Allyn Medical Division 4341 State Street Road P O Box 220 Skaneateles Falls NY 13153 0220 PN 140399 Rev B Rev ECN 140399 SureSight Service Manual 5 41452 5 2000 140399 B SureSight Service Manual npe Drawings and or illustrations and or part numbers contained in this document are for reference purposes only For current revisions call the Welch Allyn Customer Service phone number listed in Section 1 PN 140399 Rev B 2 TABLE OF CONTENTS SECTION 1 GENERAL INFORMATION 1 1 About the SureSight Vision Screener 1 2 About the SureSight Autorefractor 1 3 Technical Help Information Worldwide Tech Support Phone Number 1 4 Theory of Operation 1 5 Block Diagram 1 6 Tooling Set up 1 7 Warnings SECTION 2 SERVICE CALIBRATION 2 1 Incoming Inspection Checklist 2 2 Required Upgrades 2 3 Tools Required for Service Calibration and Software Loading Table 2 3 1 Tier 1 Unit Check Out Yearly calibration Table 2 3 2 Tier 2 Unit Repair Major Systems 2 4 Calibration Check Required after all repairs 2 5 Software Loading Upgrading 2 6 Product Numbering Structure Serial Numbering Structure 2 7 Repair Parts List SECTION 3 TROUBLESHOOTING 3 1 Technical Troubleshooting Table Complaint Cause Corrective Action SECTION 4 DISASSEMBLY AND REPAIR 4 1 Replacement of Bottom Housing 4 2 Replacement of Flex 4 3 Replacement of DSP Board 4 4 Repla
44. agt la Torque Driver Phillips bit for 6 screw 2 Y length Required Attachment E cor al T1562 12 5 5 7 5 in lb Required Attachment meo S Torx Bit T 20 Attachment T16541 Baseplate Support Fixture Top Main assembly repairs T16542 Baseplate Support Fixture Bottom Main assembly repairs PN 140399 Rev B 17 NOTE REPAIR STATIONS WILL BE REQUIRED TO HAVE A STEP DOWN TRANSFORMER NOTE PROPER TORQUES ARE CRITICAL TO FUNCTION DO NOT HAND TIGHTEN WITHOUT TORQUE METER OR DRIVER 2 4 CALIBRATION CHECK 2 4 1 Before starting the software make sure all dip switches are in the off position 2 4 2 Start up software 2 4 8 Place unit in nest follow instructions on the screen 2 4 4 2 4 5 2 4 6 Press the child adult button ensure the unit powers up and plug in USB Follow instructions on the screen PN 140399 Rev B 18 2 4 7 The software will flip through some more screens and stop at the LCD screen Check to see if the LCD s are on and follow instructions on the screen Then check to see if they are off and follow instructions on the screen 2 4 8 After the LCD check the program will prompt you to place the black cloth over the dog house Follow instructions on the screen 2 4 9 2 4 10 Remove the black cloth from the dog house and follow instructions on the screen PN 140399 Rev B 19 2 4 11 Place the printer in front of the unit see Figure 1 Printer position Follow instructions on the screen
45. anty and could compromise instrument safety and performance Read and understand all safety warnings and service notes printed in this Service Manual and the Operator s Manuals SureSight part number 140300 and SureSight Autorefractor part number 140400 If in doubt about any precaution or procedure for phone help or to order additional copies of the SureSight Operator s Manuals contact Customer Service Welch Allyn Inc 4341 State Street Road PO Box 220 Skaneateles Falls NY 13153 0220 USA Telephone 1 800 535 6663 When calling refer to the model number shown on data label found on the bottom of the SureSight Troubleshooting assistance is contained in Section 3 of this manual Year 2000 Information The SureSight is Y2K compliant and will not will not encounter Year 2000 Problems PN 140399 Rev B 1 4 THEORY OF OPERATION DETAILS Hartmann Shack Technique Description The following is a description of the basic Hartmann Shack method on which the device is based Illumination CCD Exit Port Patient Eye Camer Lens System Mirror Light is sent from an illumination source inside the SureSight through a beam splitter and focuses on the back of the eye retina The retina in turn reflects the light back into the device Inside the unit the beam travels through a series of mirrors and is received by a micro lens array creating an image which is sent to a CCD camera The spot pattern of light formed is t
46. cement of RTC Battery 4 5 Replacement of Front Insert Assembly 4 6 Removal of O Ring 4 7 Replacement of the LCD Assembly 4 8 Replacement of LCD Board 4 9 Replacement of Battery Compartment Assembly 4 10 Replacement of Power Board 4 11 Replacement of the Aligned Baseplate Assembly 4 12 Replacement of Hand Strap 4 13 Replacement of the Top Housing 4 14 Cleaning of the Windows 4 15 Hewlett Packard Printer Check 4 16 Dip Switch Changing APPENDIX SECTIONS A Final Test Specs A04187 B Electrical Schematics and Drawings 140150 C Revision Logs A04262 D SureSight Final Assembly Drawing 140000 PN 140399 Rev B SECTION 1 GENERAL INFORMATION 1 4 ABOUT THE SURESIGHT PRIMARY CARE MODEL 14001 SureSight is an objective accurate affordable vision test that ensures reliable early detection of refractive error the primary vision disorder in children Early detection improves outcomes and reduces treatment duration 1 2 ABOUT THE SURESIGHT AUTOREFRACTOR MODEL 14011 SureSight is a child friendly portable affordable autorefractor that lets you test patients including young children and adults anytime anywhere Carry it from room to room to your waiting area even off site PN 140399 Rev B 1 3 TECHNICAL HELP INFORMATION All service and repairs must be performed by fully trained and properly equipped personnel using genuine replacement parts and correct procedures Failure to do so will invalidate the product warr
47. cluding ABS Distances selected should be approximately 200 300 400 500 mm All measurements to be taken from front of unit at the center of the distance measurement opening Where actual is the physical position of the tester block with respect unit front at ultrasonic port These selected positions may vary from recommended up to 20 mm However their exact location must be determined to use as the true setting for comparison to the instrument reading E DRAWINGS AND SPECIFICATIONS ARE NOT BE REPRODUCED OR COPIED OR ED AS PMENT OR DEVICES WITHOUT WRITTEN PE ISSION E PROPERTY OF WELCH ALLYN A BASIS FOR MANUFACTURE OR SALE INC AND PAGE 4 OF 9 DRAWING NUMBER A04187 4 USER INDICATORS FIXATION LED S LCD CROSSHAIR Light fixation LED s and verify that they function and EU flash Light LCD segments and insure that they all turn OFF D ON a visible If any of these indicators do not function as stated FAIL unit 5 BUTTON OPERATION Press each button separately and verify that each returns its own value only The corresponding values are e Left 1 SDK returns these values based e Right 2 on button selected e Center 0 6 PRINT OPERATION IR po Print test assumes use of an HP82240B IR printer Print test sentence from 18 inches 2 inches Insure that no letters are skipped and no er
48. des the microprocessor which controls the operation of the product It also contains the software in a flash EEPROM external RAM a real time clock with battery and the decoding circuitry for the user button presses In addition the DSP board passes both power and control signals between boards All boards are connected to the DSP and all signals and power are redistributed as needed In other words any connections which must be made between boards do so through the DSP board Power Board The power board includes two switching systems to generate all voltages required to operate the product It includes the charging control circuitry the low battery circuitry the distance measurement circuitry and the speaker tone generation circuitry Fixation Board The fixation board includes the fixation LED array which is flashed to attract the patients attention It also includes the jacks for USB RS232 connection and the charging port The drive circuitry for the RS232 and USB is located on this board as well as the IRDA sensor which communicates with the printer In the central section of this board the ultrasonic sensor is mounted However the ultrasonic sensor circuitry is actually on the power board it only sits on the fixation board to match the output port of the housing One important note the fixation board must be present for the system to power up If the power board does not sense the presence of the charging jack with no plug pre
49. e means Five or more units can be tested five times to determine range of values and then clinically verified to provide proper performance Since this is very time consuming the alternative is to test 30 units under the current settings and then use them to reset and or reverify the acceptable range of values under the new setup During this comparison standard deviations of the new setup must be sufficiently low so as to allow new boundaries to be set For reference a current set of wheel values including standard deviations is included in the wheel verification Aspec listed on the BOM E DRAWINGS AND SPECIFICATIONS ARE E PROPERTY OF WELCH ALLYN INC AND NOT BE REPRODUCED OR COPIED OR ED AS A BASIS FOR MANUFACTURE OR SALE PMENT OR DEVICES WITHOUT WRITTEN PERMISSION PAGE 1 OF 6 DRAWING NUMBER REV A04260 B PROCESS SHEET FOR SureSight Alignment Specification DRAWN C Fahrenkrug DATE 05 05 00 APPROVED RA DATE 05 05 00 REL TO PROD GR Waclena DATE 05 05 00 REV DESCRIPTION ECN DATE Release to Production 5 41366 7 17 2000 Rev d p5 to account for Repair 5 41599 CCF 6 29 2000 SF THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN INC AND SHALL NOT BE REPRODUCED OR COPIED OR USED AS A BASIS FOR MANUFACTURE OR SALE OF EQUIPMENT OR DEVICES WITHOUT WRITTEN PERMISSION PAGE 2 OF 6 DRAWING NUMBER A04260 GENERAL The
50. eassembled download the software See Section 2 7 PN 140399 Rev B 40 4 4 REPLACEMENT OF RTC BATTERY NOTE The RTC battery should last 10 years from its initial placement 4 4 1 Remove the DSP Board See Section 4 3 4 4 2 Disconnect RTC battery from bottom of DSP board 4 4 2 1 Being very careful not to break the legs of the RTC battery or damage the pins of the IC chip off of the pad pry the four outer legs of RTC battery away from the board At 4 4 3 Place the new RTC battery onto the DSP board 4 4 3 1 Align the 4 pins and the alignment tab of the RTC battery to the 4 holes and slot on the IC chip 4 4 3 2 Press the RTC battery down to securely clip onto the IC chip NOTE RTC battery is keyed DO NOT force it down make sure its tabs align with RTC chip slots 4 4 4 One the unit is reassembled download software See Section 2 7 PN 140399 Rev B 41 4 5 REPLACEMENT OF FRONT INSERT ASSEMBLY 4 5 1 Place unit in nest T16556 with bottom housing facing up 4 5 2 Remove the bottom housing See Section 4 1 4 5 3 Lift the baseplate sub assembly with front insert and LCD assembly out of the top housing and disconnect the distance wire assembly from the power board as well as the front insert flex to the DSP board 4 5 4 Remove the Front Insert Assembly by sliding it up NOTE You MUST replace the distance wire assembly whenever it is removed from the sensor contacts It is a single use spr
51. erwise specified all units should be upgraded to the current S W version Bt THESE DRAWINGS AND SPECIFICATIONS ARE E PROPERTY OF WELCH ALLYN INC AND SHALL NOT BE REPRODUCED OR COPIED ED AS A BASIS FOR MANUFACTURE OR SALE OF EQUIPMENT OR DEVICES WITHOUT WRITTE ERMISSION A RELEASE TO PRODUCTION X6 5 39368 JJO 14 14 99 REV D TORQUES ADDED 2 sus sa 6 23 09 PICS 18 59 60 6 5 39813 SB 06 23 99 REM D ITEM 10 5 39942 se ree D ITEM 55 ADDED C O O O e c O c O m m T n o REM 62 63 64 ANOTHER 48 400 REM D BALLOONS FOR rrr ITEMS 8 9 12 13 REM D O RING ITEM 61 5 40283 Gug 5 40661 E 5 40115 4 REM D 8 BALLOONS ADDED REM D 6 BALLOONS ADDED REV D TORQUE RANGE FOR TEM 28 REM D VALUE FOR ITEM 47 5 41419 se 5 30 00 o lt lt ce co gt o c O O O O O eo e e O eo eL us EE LE TT 56 29 d PCS EZ Z NS SN SS EIN LJ A nn ee CL 7 A A r a 5 LN T cH c L7 Ll ZZ EE Cc CH NNT D xn gt II C713 ST tes E OOOO ASS er PLES e D CA Cas
52. es the RS232 interface and cable 140104 2 1 DEFAULT CAL RECORD Apply Supply Voltage to the unit 7 2V to 8 0V atthe Nominal voltage range 5 battery terminals Default CAL Record to be loaded into unit prior to calibration including the following settings Camera set to step 23 Zero out distance offset Exposure set to 1 frame Open Laser range Set Exposure e CAL fields to be updated throughout tests as described below E DRAWINGS AND SPECIFICATIONS ARE E PROPERTY OF WELCH ALLYN INC AND NOT BE REPRODUCED OR COPIED OR ED AS A BASIS FOR MANUFACTURE OR SALE PMENT OR DEVICES WITHOUT WRITTEN PERMISSION PAGE 3 OF 9 DRAWING A04187 2 UNIT INFORMATION CAL Record should include the following information Serial Number Software Revision Hardware Revision Odometer FPGA Revision Measure distance at four distances between 200 amp 500 mm Distances to be approximately evenly spaced to allow best data for linearization Distance positions to match true settings within 2mm actual vs Programmed Compute the average offset of the distance sensor over this 200 to 500 mm range and load it into the CAL record Return to the 200mm location and measure the position Return distance must be within 2mm of 200mm actual See also History Log Aspec s Tracks number of tests Target to be 5 x 5 of any solid material in
53. function On older units the patient window may have excess scratches Replace with new harder coated window See S N Revision Log 4 15 HEWLETT PACKARD PRINTER CHECK 4 15 1 4 15 2 4 15 3 4 15 4 4 15 5 4 15 6 4 15 7 4 15 8 Make sure there is paper in unit Install 536000 if needed While holding down the paper advance button turn unit on then release paper advance button Printer should print out a self test Make sure everything is clear and readable The battery reading on the bottom of self test should be 3 4 or 5 Replace the batteries if reading is O or 1 Down load information from a unit Turn unit off Placed printer back with customer order Use PRT as a work unit code with an inspect time of 10 minutes Note If unit is from a warranty replacement and there is not paper in it and batteries are in the Styrofoam insert unit was never used OK to send back to stock as new without running self test Make sure there is a roll of paper manual and card in box PN 140399 Rev B 53 4 16 DiP SWITCH CHANGES 4 16 1 4 16 2 PN 140399 Rev B Open the battery compartment door and locate dip switches underneath the battery compartment on the LCD board Using the tool provided pull of push the dip switch to the On or OFF Position See diagram below When the dip switch is in the UP position the Dip switch is ON When the dip switch is inthe DOWN position the Dip switch is OFF
54. he green wire at the contact and then connected with the red wire at the clip DO NOT USE ANY BATTERY COMPARTMENT THAT IS NOT CORRECTLY WIRED 4 9 9 Replace the battery compartment assembly PN 140399 Rev B 47 4 9 10 4 9 11 4 9 12 PN 140399 Rev B 4 9 9 1 4 9 9 2 4 9 9 3 4 9 9 4 Connect the black and red wire to the bottom of the power board by sliding the clip on Attach the battery compartment to the baseplate assembly with the three screws Torque to 1 5 2 0 in lb using torque driver T1562 23 See Drawing 140000 Appendix D Ensuring that the wires are close to the camera and out of the way of the standoff secure the green ground wire with one screw to the baseplate Torque to 3 5 4 5 in lb using torque driver T1562 12 See Drawing 140000 Appendix D If needed bend the contact at a 90 angle to place wires out of the way of the standoff Place a new piece of foam on the side of the battery compartment The foam should be placed between the end of the cut out on the side of the compartment and the closed end on the compartment Replace the DSP board See Section 4 3 4 9 10 1 Place the entire assembly back into the top housing by lining up the bumpers into guides in the top housing Make sure they are down and fully in their cut out area Replace bottom housing See Section 4 1 One the unit is reassembled download software See Section 2 7 48 4 10 REPLACEMENT OF PO
55. he laser is NOT aligned with the sensor Follow instructions on the screen 2 4 18 Cover the dog house with the black cloth and follow instructions on the screen 2 4 19 When prompted to use the NV scope to align the laser with the sensor Cover unit and follow instructions on the screen Laser inten city Setings A A too rat Qoi bii gine Chas Bind c 2 4 20 Remove the laser measurement tool and then place the 0 6 ND filter on tester and make sure the swing eye fixture is positioned in front of the unit PN 140399 Rev B 22 Place ND filter in groove on the nest Figure 4 Swing Eye Fixture and ND filter 2 4 21 Click on align laser This will bring up the flash point screen with the camera image Find the max glare by moving the knobs on the swing eye fixture Once this is found select exit on the flash point screen 2 4 22 The next screen will prompt you to place the black cloth over the dog house 2 4 23 Check for crosshair and follow instructions on the screen PN 140399 Rev B 23 2 4 24 The next screen will prompt you to remove the black cloth LEAVE THE BLACK CLOTH ON THE UNIT BUT MAKE SURE IT DOES NOT BLOCK THE FRONT OF THE DOG HOUSE Follow instructions on the screen 2 4 26 Remove the black cloth and place the ND filter back on the nest Follow instructions on the screen PN 140399 Rev B 24 2 4 27 Follow instructions on the screen When you remove the unit from the nest keep the USB con
56. hm R155 R15b LCD_ WE e SS ToneEN Konene LCD_VSS GND3 00K 100K LCD CS a 2 Laser Inc ToneCS O USB_OE os Spkr_CS ToneU D G R160 LCD_BUTTON_GND s ERAN als Laser UB DCIN R159 400K 3 3V Ki d E N DCINGND LCD BUTTON GND 00K O K2 E USB RN O E UUINUNPLUGGED K3 Q G R145 Ep dup O O R146 47K DIP DO 5 aay es 03 e 0 Ohm R147 47K DIP D1 ge Fix Clock ol EE c TP27 TP28 TP29 TP30 R148 47K DIP D2 ll q R175 Fi Late TO AA _ S9 DA AO 7 R149 47K Tx DIP D M O IRDA_TXD 1 AE IRDA_RXD SS SSS i z 52435 3091 CAAA EB uk R152 47K DI De H HA Power_Fix lt lt Oj 1 R153 47K DIP D7 Il 11g 0 Ohm DCIN Main Trigger L ON cD Dip GND lll Camtrig H Off Notes DIPSWO gt Q 30 _DCINUNPLUGGED i DIPSW1 S Molex 52437 3091 GND 1 All values are shown for reference only Peor 9O See BOM for proper values DIPSW2 gt RS232 TXD RS232 RXD PPGRX 2 Text notes from 2D design are pipsw3 E 0 all A VES maintained for reference R181 0 925 PRAWN DATE DIPSW4 gt X 9 26 E Dickman 03 25 99 only X 0 27 pu O O CCF 6 9 00 Molex 52435 2891 RELEASED DAVE DSP MCU Schematic 6 9 00 Size Document Number Rev MKT ENGINEER PROJECT NO D 140156 A CCF RD14000 Date Tuesday June 27 2000 Sheet 2 of 2 THiS DRAWING AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN INC AND SHALL NOT BE REPRODUCED COPIED OR USED AS THE BASIS FOR THE MANUFACTURE OR THE SALE OF EQUIPMENT OR DEVICES WITHOUT WRITTEN
57. in constant tone send in for repair Customer Corrective Repair Technician Action Corrective Action a a a Check Tube with PC Assembly May need to shake to see if there is aperture movement If there is replace tubes with PC Assembly WA In House Only Replace Aligned Base plate Assembly If O ring exists remove it Replace Front Insert Assembly NOTE Wire Harness must be replaced if Front Insert is replaced Replace Power board Return unit for repair Return unit for repair No Reading Unit misaligned Refer to Unit is not aligned IO Low Unit misaligned Reading High Unit misaligned Reading PN 140399 Rev B Ensure level test with patient Ensure unit is on proper calibration adult child Verify room lighting not direct lighting Verify confidence readings are 6 or higher Verify that readings are within 5 D typ Ensure level test with patient Ensure unit is on proper calibration adult child Verify room lighting not direct lighting Verify confidence readings are 6 or higher Verify that readings are within 5 D typ Retest patient level with unit Turn down room lights verify adult child calibration Verify S W version Return unit for repair Refer to Unit is not aligned Retest patient level with unit Turn down room lights verify adult child calibration Verify S W version Return unit for repair Refer to Unit is not aligned 32 Chief Cause Look For Complain
58. ing 4 1 3 4 Ensure the housing aligns with the battery door and patient window 4 1 3 5 Re torque to 5 5 7 5 in lb using torque driver T1562 12 See drawing 140000 Appendix D 4 1 3 6 Verify no flexes are caught in between the housings PN 140399 Rev B 38 4 2 REPLACEMENT OF FLEX 4 2 1 4 2 2 4 2 3 4 2 4 4 2 5 Glue or Kapton Tape will be on this flex 4 2 6 PN 140399 Rev B Place unit in nest T16556 with bottom housing facing up Remove bottom housing See Section 4 1 Remove glue or kapton tape if it exists from the flex Locate the tabs bar of the flex insert toward the flex Pull out the tab bar away from the flex connector body to loosen the connection which will allow the flex to slide out Make sure both sides of the tab are unlatched my 4 21 0 8211435 NOLLNALIN 23 Connector 94 body l Tab Bar Pull bar out to loosen Replace the flex by holding the tab bar out and sliding the flex back into the connection 4 2 6 1 Note the flex has an insulated side and a side with connectors 4 2 6 2 Place the connector side of the flex toward the connector side of the flex insert This is always the opposite side from where the tab bar is Slide the tab bar in to tighten 4 2 6 3 Once the flex is slid into the flex insert slide the tab bar back into place Make sure that the flex is straight or connections will not be properly made 4 2 6 4 If the flex that had been
59. ing clip only Disconnect the wire harness from Disconnect the power the wire board harness from the ultrasonic sensor e y Tx Ld ez Vlt Mg M 4 5 5 Replace the front insert assembly and the distance wire assembly 4 5 5 1 Clip the new distance wire assembly on to the power board 4 5 5 1 1 _ Connect the black wire onto the silver tab of the sensor 4 5 5 1 2 _ Connect the red wire to the copper tab of the sensor 4 5 5 2 Replace the entire assembly back into the top housing Align the bumpers and seat correctly in the guides on the top housing 4 5 5 2 1 Slide the front assembly into the unit so that the rubber boot fits into the opening and the tabs of the front insert align with the guides on the bottom housing Check to make sure there are no wires caught in between the front insert and the bottom housing 4 5 5 2 2 _ Reconnect the flex to the DSP board then using kapton tape tape together the flex and the connector See Section 4 2 PN 140399 Rev B 42 4 5 6 PN 140399 Rev B 4 5 5 2 3 Ensure the bumpers are seated correctly down and completely in their cut out areas 4 5 5 2 4 Place the bottom housing back on to the unit See Section 4 1 Once the unit is reassembled download software See Section 2 7 43 4 6 REMOVAL OF O RING 4 6 1 Place unit in nest T16556 with bottom housing facing up 4 6 2 Remove bottom housing See Section 4 1 4 6 3 Locate o ring on the ultrasonic sensor
60. ion 4 1 the front insert assembly See Section 4 5 the LCD assembly See Section 4 7 and the patient window 4 13 3 Remove the remaining assembly from the top housing 4 13 4 Remove the hand strap See Section 4 12 4 13 5 Prior to installing the top housing ensure the black Kapton tape is present 4 13 6 _ Place the new top housing into nest T16556 4 13 7 _ Replace the baseplate assembly See Section 4 11 front insert assembly See Section 4 5 and LCD assembly See Section 4 7 4 13 8 Replace the patient window 4 13 8 1 Ensure the window is clean before replacing See Section 4 14 4 13 8 1 14 Ensure that the gasket is wrapped around the window correctly 4 13 8 1 2 Slide the window with the unconnected seam side of the gasket down into the guides on the top housing 4 13 8 2 _ Place the bottom housing back onto the top housing ensure that the LCD assembly front insert assembly patient window and battery door are aligned in the proper places 4 13 8 3 Reinsert screws Torque to 5 5 7 5 in lb using torque driver T1652 12 See drawing 140000 Appendix D 4 13 8 4 Replace Hand Strap See Section 4 12 PN 140399 Rev B 52 4 14 CLEANING OF THE WINDOWS 4 14 1 4 14 2 4 14 3 All windows on the Sure Sight may be cleaned with a soft window scratch resistant cloth moistened with 70 Isopropyl Alcohol or any standard window cleaner Be sure not to leave streaks to ensure proper
61. kage 1uA 43 3V FIX DATA 8 O FIX_CLOCK 9 FIX LATCH IRDA TXOUT IRDA RXIN O DCINGND PwrDN o 3 3V DCIN O C1 TP38 t B RS 5 3 2 R1 0 1uF 50V X7R Rohm SML 020 MYT T86 TP37 DCINGND 3 3V 10K R44 4 9 C3 C2 4K DCINUNPLUGGED 0 1uF 50V X7R 1uF 25V ChargeLED2 GND U1 GND C5 SP3221E PPCTX B 0 1uF 35V LC PPCRX O E Q lt A 24 4 TP6 FIX DATA 4 25 z x o 26 LE D qu Ep Tu i Q Q C8 0 1uF 35V FIX CLOCK PSRCLK 28 0 1uF 35V L Od TP7 F TP8 A RESET L C9 FIX LATCH E R9 R8 TP10 a 0 1uF 35V dae POR SMELUSUSMTOTS 10K 10K C o R39 200 TP32 R11 8 PPCTX RXD 7 D2 C4 Ll C 10K J1 DO NOT POP neam 555166 1 Amp PPCRX 9 8 TM 3 gt R40 BE PwrDN EN 200 5 Rohm SML 010 MT T86 6 dil o o FORCEOFF 7 FORCEON pou 8 9 0 INVALID GND PA 1 Maximum leakage luA Off when EN H DCINGND RohmSML 020 MYT T86 TP36 J2 DCINGND DCINUNPLUGGED 3 DCIN R46 RAPC 712 4K TP18 TP19 LED 3 3V USBTXN LED O us T 6 8uF 16V r i C11 R21 R22 0 47uF 25V X7R rox To TRDA al On Philips part pin 1 R18 Mode default open Eo em 4 7 Ohm TP35 Spec is 2 2 Ohms 3 3V n SEN L Test Points For Reference only o C12 C13 9 U3 3 3V 1uF 25V 3 3V 1uF 25V F HSDL 3600 018 TP2 3 3V TP23 TP34 TP20 TP21 TP22 O TP24 O TP4 GND E C14 T C15 TM DO NOT POP is Paces For Full Speed operation populate R25 only Han e ET 10K U4 3 3V 3 3V TP25 10K TP6 V Charge P
62. ly See Section 4 7 and the front insert assembly See Section 4 5 to the DSP board 4 11 11 Connect the distance wire assembly clip to the power board NOTE You MUST replace the wire harness whenever it is removed from the sensor contacts It is a single use spring clip only 4 11 12 Replace the 4 bumpers on the new aligned baseplate assembly 4 11 13 Place the top housing in nest T16556 4 11 14 Place the assembly into the top housing by lining up the bumpers in the guides on the bottom housing 4 11 15 Replace the bottom housing See Section 4 1 4 11 16 Once the unit is reassembled download software See Section 2 7 PN 140399 Rev B 50 4 12 REPLACEMENT OF HAND STRAP 4 12 1 Position the unit so that the hand strap is facing up and the battery door compartment is toward you 4 12 2 _ Push the hand strap forward until the square notches beneath it are visible hold the strap in this position with one hand 4 12 3 Insert the tool provided into one of the notches and press outward until the fastener is released 4 12 4 Repeat step 4 12 3 on the other fastener 4 12 5 Insert the fasteners of the new strap into the appropriate slots so that Welch Allyn can be read 4 12 6 Pull on the strap to ensure that it is seated properly PN 140399 Rev B 51 4 13 REPLACEMENT OF THE TOP HOUSING 4 13 1 Place unit in nest T16556 with bottom housing facing up 4 13 2 Remove bottom housing See Sect
63. m old LCD board 4 8 4 Reattach the board with the screws Torque screws to 2 75 3 75 in lb using torque driver T1562 12 See Drawing 140000 Appendix D 4 8 5 Replace LCD assembly See Section 4 7 4 8 6 Replace the bottom housing See Section 4 1 4 8 7 Once the unit is reassembled download software See Section 2 7 PN 140399 Rev B 46 4 9 REPLACEMENT OF BATTERY COMPARTMENT ASSEMBLY 4 9 1 Place unit in nest T16556 with bottom housing facing up 4 9 2 Remove bottom housing See Section 4 1 4 9 3 Lift baseplate assembly with LCD assembly and front insert assembly out of the top housing Make sure to disconnect front insert distance wire assembly from connection on the power board and disconnect the LCD flex and the front insert flex from the DSP board Remove bumpers and place on baseplate support fixture T16541 4 9 4 Disconnect the DSP board See Section 4 3 4 9 5 Remove 3 screws from battery retainer unit 4 9 6 Remove the 1 screw from the green ground wire 3 screws Green Ground Wire 4 9 7 Remove the black and red wire clip from bottom of the power board 4 9 7 1 Squeeze the clip down on the side of the wires and slide out 4 9 8 Before installing battery compartment assembly verify wires are in correct slots With compartment opening facing you slot side down the red wire should be on the bottom side and the green wire should be on the top side The black wire should be connected with t
64. nected I 2 4 28 Starting with the 2 diopter take one reading from each of the fake eyes on the rack of eyes 2 4 29 IF THIS IS A PRIMARY CARE UNIT THIS WILL BE THE END OF THE AUTOMATED TEST Reset DIP Switches to their original position and proceed to step 2 4 34 The following steps are only for EYECARE UNITS 2 4 30 Follow the instructions on the screen remove the USB and change the DIP switch settings Dreier end De ET Fari virt ur de 2 4 81 Follow instructions on the screen and replace the battery PN 140399 Rev B 25 2 4 34 2 4 35 PN 140399 Rev B Check the charge current of the unit once it has completed the calibration test Insert a discharged or moderately charged battery into the unit under test Connect the 71040 to the charger box IN Connect the extender cable from the charger box OUT to the unit jack Connect the Fluke 73 multimeter to the two jacks on the charge box Note this is the only multimeter allowed to check the charge current Positive lead goes to 10 A Negative lead goes to COM Set meter at D C Amps Read the current The current should read between 40 mA 162 mA Note A fully topped off battery may trigger the shutdown circuitry of the charge system If the current reads low it should be verified with a second battery before replacement Check for aesthetics If there are any fingerprints on housings or windows properly clean them off 26 2 5 SOFTWARE
65. nit due to wires relays etc the actual input should be adjusted to yield the specified voltage at the power board Set Input voltage to 7 4V LBW 7 3V max 6 8V min e Verify that neither LBW nor LBD are set 7 056 nom e Set Input voltage to 6 5V LBD 6 4V max 6 0V min Verify that LBW is set but LBD is not 6 256 nom Set Input voltage to 5 9V Unit will not function at this Verify that LBW and LBD is set voltage level This is optional to test in the final assembly but preferred if possible E DRAWINGS AND SPECIFICATIONS ARE E PROPERTY OF WELCH ALLYN INC AND NOT BE REPRODUCED OR COPIED OR ED AS A BASIS FOR MANUFACTURE OR SALE PMENT OR DEVICES WITHOUT WRITTEN PERMISSION A04187 13 NOMINAL CURRENT DRAW Not required for Repair Restore input voltage to 8 0 to 8 4V Nominal voltage With unit in ON mode MCU powered up measure the input current Reguirement 300mA lt I lt 550mA Nominal 477mA 14 REAL TIME CLOCK SETTING Note Clock is not to be reset to other time zones it is for factory use only Unit must detect the presence of the distance block on Addresses lowered sensitivity 500 consecutive measurements Measurements must which occurs when ultrasonic not deviate from nominal setting by more than 2 mm sensor is improperly assembled or unit is a fail E DRAWINGS AND SPECIF
66. or maintenance instructions in the documents accompanying the instrument Service or Repair to be performed by gualified authorized personnel only There are no user serviceable parts inside the instrument Opening this device can expose the user to harmful invisible laser radiation Use only Welch Allyn 710 series chargers Replacement parts and accessories Use only approved replacement parts and accessories specified in this manual Refer to the repair parts section of this manual Do not sterilize the instrument or any of its components Use only with IEC 60601 1 approved printers or keep printer out of patient vicinity Battery replacement Replace with Welch Allyn model 72420 Lithium lon battery only Do not attempt to disassemble or modify the battery pack There are no user serviceable parts inside the pack Do not attempt to directly solder the battery pack Do not attempt to connect the positive and negative battery terminals to each other nor to any other device Caution use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure Do not operate charge leave or discard battery pack in any environment where it may exceed 0 C to 40 C Do not immerse the battery pack in water Do not attempt to open or pierce the battery pack Do not throw or strike the battery pack Do not use a battery pack which appears to be deformed leaking
67. purpose of this specification is to provide the product requirements for alignment for the SureSight product The process aspec is derived based on these specifications and the actual magnification and camera selected for use in the alignment station tooling In addition a specification for the manufacturing setting is listed in addition to the final product requirement In each case the manufacturing specification is tighter than the final product specification This is to insure that the manufacturing setting plus the repeatability variation do not exceed the final product requirement It should be noted that if the final product requirement is used for the manufacturing setting limits excessive fallout would be likely at the final tester due to variations in repeatability Unless otherwise specified e Fake eyes to be built as per Fake Eye Construction Aspec on BOM Nominally this includes a 4 5mm pupil ref e All measurements to be completed at nominal working distance 360mm from first conjugate surface to front surface of fake eye 1 MAXIMUM GLARE All alignments to be done with fake eye positioned for maximum glare Maximum glare occurs when the laser is projected into a fake eye in the center and perpendicular to the lens This demonstrated by achieving the brightest glare within the image In general this will also occur roughly in the center of the return image See Figure 1 Figure 1 THESE DRAWINGS AND SPECIFICATIONS ARE T
68. ranslated into sphere cylinder and axis Examples of Spot Pattern Received Through CCD Camera Emmetropic Eye 0 00 Diopters Hyperopic Eye 4 24 Diopters spot pattern of light is uniform spot pattern of light is compacted PN 140399 Rev B VISION SCREENER OPTICAL SYSTEM ARCHITECTURE The following is a description of the present design architecture A collimated beam of light is projected out of the patient port by the illumination system The light is focused by the eye lens and cornea to a small spot on the retina This blur acts as a point source on the back of the eye which then radiates back through the eye lens and cornea producing a reflected beam which includes information about the lens power and eye aberrations The resulting return beam is directed by the beam splitter into the measurement path which is detected by the camera at the end of the path To achieve alignment the practitioner views the patient eye and the alignment guide pattern through the viewing system The working distance between the output port of the device and the patient of approximately 40 centimeters This large working distance provides the opportunity to improve accuracy in children as well as being less intimidating to them It also reduces the need for fogging in which is used in conventional autorefractors which work at approximately 2cm VIEWING SYSTEM ILLUMINATION Ae SS Ne Ca 2 FY PN 140399 Rev B MAJOR SUBSYSTEMS Ill
69. removed had either glue or kapton tape on it replace with kapton tape only 39 4 3 REPLACEMENT OF DSP BOARD 4 3 1 4 3 2 4 3 3 4 3 4 4 3 5 Kapton Tape on the flex and connector 4 3 6 Place unit in nest T16556 with bottom housing facing up Remove bottom housing See Section 4 1 Disconnect the flexes located on the DSP board that connect from the LCD board fixation board laser board power board and the camera board See Section 4 2 4 3 3 1 Note that the fixation and LCD flex may have glue or Kapton tape over them to keep them secure 4 3 3 2 Remove glue or kapton tape from the connector To prevent damage peel the hardened glue or kapton tape in the direction of the flex NOT toward the connector or the connector may be damaged or peel off Once flexes are clear remove the 2 screws from the DSP board and carefully lift it out of the unit Replace the new DSP board battery side down onto the aligned plate assembly aligning holes in board with mounting holes 4 3 5 1 Replace the laser tag on the right screw then fasten the DSP board with the 2 screws Torque screws to 1 5 2 0 in lb using torque driver T1562 23 See Drawing 140000 Appendix D 4 3 5 2 Reconnect the removed flexes to the proper positions See Section 4 2 then using Kapton tape only tape together the flex and the connector Replace the bottom housing and fasten together See Section 4 1 Once the unit is r
70. ror boxes B are printed 00 7 RS232 DOWNLOAD OPERATION Connect cable 140104 2 connected between unit and See BOM for current revision PC running Win98 latest revision of WA_Down and FPG DLL Download latest version of software and update Unit Information Note If this function is performed on a previous station it is not reguired a second time E DRAWINGS AND SPECIFICATIONS ARE E PROPERTY OF WELCH ALLYN INC AND NOT BE REPRODUCED OR COPIED O ED AS A BASIS FOR MANUFACTURE OR SALE PMENT OR DEVICES WITHOUT WRITTEN PERMISSION A04187 All laser readings to be done on a UDT meter with a single point 780nm calibration Readings must be done in ambient light lower than AuW for all steps in this section Step laser pot down at least 120 steps to insure that it is at its minimum Step pot up one step at a time until the laser power is greater than or equal to 7 MW but less than 16uW Log this pot setting as the laser minimum setting Store both the laser step and the actual light output in uW in test record Step pot up one step at a time until the laser power is greater than 17 uW but less than or equal to 22 uW Log this pot setting as the laser nominal setting Store both the laser step and the actual light output in uW in test record Step pot up one step at a time until the laser power is greater than or equal to 28 uW but less than 33
71. s are low refer to printer manual pg 14 Ensure battery is charged Ensure battery is installed and turned on Look through peephole and identify Crosshair Retry printing Replace batteries in printer Return unit for repair Press feed right most button to wake printer up Return unit for repair Reset to roughly center of range Printer can be used at higher or lower settings if customer desires Replace batteries Return unit to Hewlett Packard for repair Return unit for repair a Check to see if flexes are connected connect if not Replace Front Insert Assembly NOTE Wire Harness must be replaced if Front Insert Assembly is replaced Check to see if flexes are connected connect if not Replace Front Insert Assembly NOTE Wire Harness must be replaced if Front Insert Assembly is replaced Check to see if flexes are connected connect if not Inspect to see if green LED lights Replace Tubes with PC Sub Assembly WA In House Only Replace baseplate assembly 31 Chief Cause Complaint Unit is not Unit dropped or aligned Impacted beyond shock level provided No Reading Incorrect Distance Look For Crosshair is in patients pupil and in range distance is constant but no images are being taken Search around eye for sweet spot Ensure that doctor and patient are at same height squared and level with each other Adjust distance until constant tone If unit cannot obta
72. sent i e not charging it will not power up Laser Board The laser board provides the drive for both the viewing crosshair LED and the laser The LED is controlled with a simple on off control at a set output current The laser is controlled to a target level depending on the setting of the digital pot on this board The pot is settable by the DSP during each startup of the device In addition the laser has an on off control which is used in addition to the digital pot to insure that the laser is off when not required for measurement Camera Board The camera board contains a full chipset for the black and white imager which detects the return beam for measurement The camera exposure control is accomplished via a serial port on the board and the gain is controlled by a digital pot which is settable by the DSP The camera gain is subject to calibration at the factory LCD The LCD is a custom assembly of glass and printed circuit board In addition to a series of seven segment displays to present the reading results and various indicators to indicate other conditions this board includes the button inputs and the dip switch inputs Theses are passed to the DSP for detection and decoding Laser Mini The laser mini is a board which is primarily a mechanical mount The board includes only the laser diode and a flex connector which mates it to the laser drive board via a flex cable LED Mini The LED mini is a board which is primaril
73. t Buttons not Electrical or functioning Mechanical failure a Verify button press performs correct function b Ensure battery symbol is not lit Unit not giving referral criteria s Crosshair not visible Wrong calibration a Ensure unit is on proper calibration adult child SureSight will only refer on child calibration Flex connector a Ensure battery in installed and turned on loose b Press Go button c Verify no Crosshair Red LED not visible Flex connector a Ensure battery in installed and turned on loose E Press Go button c Verify no LED Customer Corrective Repair Technician Action Corrective Action a Return unit for repair a Replace LCD Assembly Change calibration as a Calibrate unit appropriate Return unit for repair a Check to see if flexes are connected connect if not Return for repair Return for repair a Check to see if flexes are connected connect if not Unit has low Foam over speaker Foam is placed directly over speaker in production Return unit for repair Place foam in proper speaker on power board position Unit does Power problem a not charge b Verify battery is inserted in proper orientation Verify battery was not inserted in reversed orientation in that the battery would crush the contacts down thus allowing intermittent contact c Verify battery contact has sufficient tension on the battery Determined by letting the battery retainer freely
74. ths pe AA A A n LL 3130 DO LS U Ox YD tT Bie 58 Dt Mo 5 42 BATTERY i WIRE A55 Y Poe MM 28 SO HR D A NOI 1939 10 SIHI NI LX31 D LL STEEP M aan A pS CERE SY 7 77 EN fos AREA A y DO U CY wm 4 1 aii y N AS AS CT o e KC NS 2 OSOS zl ae 31 40 42 a a nO TORGUE RANGE SE IN INCH LBS GG AA AN EU m EEE NS SS E NE A Ta A f 7 TE En NG L SY C E E EMT e O C C VALEN WE ROUT COYER DS BOARD X FEN es CES HB ool x PICS O LASER WARNING LABE ITEM 59509 v2 NOTES THIS DWG 50ll SureSight FINAL ASSEMBLY ls FOR TORQUE VALUES REFER TO TABLE PART NO DESCRIPTION THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN INC t END OF MANUFACTURE AND PRIOR TO SHIPMENT eae oe EACH UNIT MUST PASS THE FOLLOWING TESTS DETAILED 1 repu ON MANUFACTURING A SPEC E 4 ts E E EROR 9 RK SOFTWARE REVISON PER BOM ORIENT TEXT o 2d us SCA Mi IN THIS DIRECTION AL TEST RO 3 ANY CHANGE AFFECTING OPTICS FUNCTION MUST HAVE PRIOR Y E DATE DATE APPROVAL
75. uW Log this pot setting as the laser maximum setting Store both the laser step and the actual light output in uW in test record Laser reading must be repeated at nominal a second time during the test sequence This reading should be sequenced so that the operator must realign to get the reading Reading to be within nominal specifications above 17uW to 22uW Turn laser off and measure output power Output power to be less than 4uW 9 CAMERA GAIN SETTING Set the camera gain to step 23 Gain is a constant pot step This setting must be present prior to boundary value checks e 780 single point cal to be the only cal in the UDT meter to avoid risk of incorrect cal usage Nominal wavelength of laser is 785nm Will guarantee that 100 step pot will be at its minimum The purpose of this step is to demonstrate normal ability to adjust laser actual value is less important and not used in product function This nominal setting results typically in 18 uW This value is used during product function The purpose of this step is to demonstrate normal ability to adjust laser actual value is less important and not used in product function Addresses FMEA issue that a misaligned laser would be accidently set too high Addresses potential comparator failure at output which leaves laser on at approximately SuW All boundary checks assume this setting 10 REFRACTIVE READING
76. umination System The illumination system generates a laser beam which can be projected into the eye under test Because this laser beam radiates in the infrared region it is not visible without an IR goggle or other IR detecting device For repair and calibration purposes an ITT night vision scope is recommended for any work which includes the illumination system The source of illumination is a 5 mW electrical 3 mW optical semiconductor laser located on the laser mini board This board is attached to the illumination tube which houses the optics needed to collect the light emitted by the laser and form it into a beam which is projected from the end opposite the laser The laser mini board is connected via a 4 position flex cable to the laser drive board which controls the laser output The drive system monitors the laser output with a photodiode which is physically built into the laser diode The laser drive system controls the laser output to a particular photodiode level which is set by the DSP board The DSP controls this setting with a digital pot on the laser drive board according to a calibration performed at the factory This beam is transmitted through the beam splitter located near the one inch port on the front of the unit SAFETY NOTE While the laser is capable of emitting 3 mW of optical power only a fraction exits the illumination tube Laser levels are controlled to approximately 18 uW which is well within Class safety limits Howe
77. ump PDIUSBP11A D Q Q C 6 CU oe wu 4 TP8 V Charge Pump TP10 PPCTX USBOE R25 R36 TP26 IRDA RXIN DE TP32 RXD IE EF eee 1 5 K 1 5K IRDA TXOUT ie A TP33 TXM USBRXD R42 USBRXP 4 D 200 Ohm USBRXN 0 D 10K TP1 LED1 E TP3 LED3 Puron COM ae re a An ME SUSPND SPEED R28 O Orii 3 3V L A TP9 LED5 8 C i TP29 TP11 DATA R34 R31 R32 2 R33 GND RSEO L O TP12 CLOCK 10K 10K 10K 10K TP31 R35 TP30 R30 TP13 LATCH E es DO NOT POP TP28 DO NOT POP TP14 LED6 On Philips part pin 8 NC TP15 LED7 Off when Suspend H 3 3V 0 FIR_SEL TP16 LED8 DO NOT POPULATE R30 TP17 LED9 TP36 Chargeledl Maximum leakage 1uA R37 TP37 Chargeled2 0 Ohm Off when Mode 0 H Maximum leakage 5uA USB TP18 USBTXN gt TP19 USBTXP TP20 USBRXD TP21 USBRXP TP22 USBRXN TP23 PwrDN TP24 RERR TP26 D TP30 D TP31 RSEO TP34 USBOE e Notes id TP25 TXD TP27 RXDSIR 1 All values are shown for reference only oot ee TP29 PWDWN See BOM for proper values TP35 LED 2 IRDA current limit set by R18 is lower then manufacturers recommended This was found to substantially improve directional and distance performance DRAWN DATE D Fallat 02 26 2000 APPROVED CCE 06 08 00 itle RELEASED Fixation Display Driver Schematic 06 08 00 Size Document Number Rev MKT ENGINEER PROJECT NO D 140154 A CCF RD14000 Date Tuesday June 27 2000 Sheet 1 of 1 THiS DRAWING AND SPECIFICATIONS ARE THE PROP
78. ver to prevent improper exposure DO NOT look at the bare laser diode A properly functioning illumination system produces an approximately collimated beam of light 2mm in diameter This beam can be seen using ITT goggles when a piece of white paper is placed in front of an operating illumination tube The collimated aspect of the beam can be observed by the lack of change in size of the beam spot regardless of the distance from the front of the tube Measurement System The measurement system detects the beam reflected from the patients eye back toward the unit This beam enters the product through the one inch port on the front of the unit and is reflected down toward the bottom of the unit by the reflecting side of the beam splitter This beam passes through a first conjugate lens to two measurement mirrors which bend the beam across the bottom of the unit and back up toward the top where it passes through a second conjugate lens in to the camera lenslet assembly The camera lenslet assembly consists of the camera board with a lenslet filter mounted to the top of it by a lenslet housing When the beam passes through this lenslet and IR filter a group of spots are created which represent the optics of the eye from which the beam came The camera image is progressively sent to the DSP board for processing If a sufficient number and quality of images is detected the DSP computes and reports a reading of the optical power detected The exposure gain
79. will meet the crosshair product specification of 76mm from the center of the pupil When unit is initially shipped to the field Repair Stations are allowed a modest increase beyond this to cover plate to plate variation which is 1 2 pixels typical For convenience crosshair position accuracy can be measured in pixels from pupil center The equivalent specifications in pixels for the alignment station as well as for the final tester are listed below The acceptable limit for the number of pixels the crosshair center can be from the pupil center is a function of the magnification of the optics as well as the resolution of the observing camera Any alteration of camera or magnification would require revision to these specifications The procedure for determining the magnification as well as the number of pixels within the product specification is listed in the next section Measurement Station Used Alignment Station Final Tester Repair Stations Specifications mm pixels n a ma al na ma 76 6 na ma Repair nma ma 46 6 118 Note Specifications are only given on the stations on which they are normally tested All others are labeled as n a Repair Station plates are allowed larger deviation for repair units only and can not be used for new production THESE DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF WELCH ALLYN INC AND SHALL NOT BE REPRODUCED OR COPIED OR USED AS A BASIS FOR MANUFA
80. y a mechanical mount The board includes only the LED and a flex connector which mates it to the laser drive board via a flex cable PN 140399 Rev B 9 1 5 BLOCK DIAGRAM SureSight Block Diagram Rev C 12 0 DSP 3 3V and 5 0V Camera 3 3V 5 0V ae amera 7 5V 15V Timing Generator FPGA Vertical Driver m PEER words ends to Laser 3 3 V Lo 1 on off AN Generates VD and HD Head Amp A D converter Viewing System Eval Prelim Good Image Detect Prelim location of Rows Cols 2 0 2 Digital Pot Laser 3 3 V Illumination hah 1 on off Shutter Control 3 0 Distance Measurement Power 5 0V A 200mm to 500mm Serial Port ee 14 0 G DMA 3 IP Lines PowerPC tk Button Detect Distance Measurement Good Image Detect Compute Readings 5 0 12 LCD Controller i Report ELED DSP 3 3V 5 0V AutoOff 7 5V 15 0V Calibration Ck VO to Printer opt 16 bits VO to RS232 opt LCD 3 3V 72V 14 1 DRAM DSP 3 3V Stores 3 images DSP 3 3V LCD as GPL Right Left Diff Refer Conf LCD 33 V Lobau Out of Cal 3 Shift Latch DIP Switches Awake 10 0 Fixation 6 0 Power 3 3V Speaker Fixation 3 3 V 8 Flickering LEDs Distributed thru PPC board 7 0 USB Port Fixation 3 3V 130 Power Supply Charger 8 0 RS232 Port Fixation 3 3V 7 2N to 33 5 0 15 0 7 5 Conversion Battery Charger Control Power

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