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SHARP SERVICE MANUAL - The Sharp MZ

1. RN M ed 10 11 Power Supply Circuits for 220V 240V 222222 i FUSE F103 101 FUSE F101 A 80101 cin A 240V AT 101 BO14 947810 t 80101 ass 110v Parts with specified ones for maintaining the safety and performance of the set 101 797 Parts marked with A are important for maintaining the safety of the set Be sure to replace these 1 10 11 e ue E 4 Race aie eat FUSE IA Pa Seay 186 32 MI FF 2 PRIMARY for 220V 240V PRIMARY for 110V SECONDARY for 110V 220V 240V m 9344153 90 QUv 1 501915 3018 SiW 10 ial lt dau eur 5041235402 4000 4 057 221 108 A v E za dii 10 ou ov jol 9 S pau gt lt 6 40 19 i 5 3 ev A i Ww P 988 sa n 0851 s 8 121 9 408 E lt k e lt h 6380 sau a 057 42 jt 62
2. C mun edm 12 Printer Mechanical 124 9 T 08 ss 4 gt 10 r e d
3. M M M M M P SUPPLEMENT THIG MODEL HAS TH SAME D MS THE EG WIW ICI 5 THE CENERATOR ROM C AND Ate Cute s MIGNED ON THE LONG 15 SHARP CORPORATION M MM mega creer 10 11 Notes The circuit diagram and printed wiring board subject change without prior notice CPU Board Circuits 1 Y SIG A SG 20 TOF Sw FEED Sw 17 9 61 IR SIG 6 ne 40 vec s voo De 20 va 08 7 ta 55 0 4 RES RESET 08 27 IC 21 id 28 TMP8039P 6 pura tia PP HOLD Pro wotb 2 Pr 3 Per TCAOHOOAP Md PSEN 47 o elc OLAJ ii ase M 40004 1 Pre Pes 82 36 TCAOMODAP 5 C R29 1504 150 528 c25 iy 19 T p TCAOMODAP ne 33 22 Do EF 4 4 62003 4 0 A n 24 a 1207 3w ow 250722 pu 552778 puza 9 eure t CN 2 74LS3 74 364 14 128 PERG 2 24 Q me d lt 81 022 592778 557778
4. 22 7415244 1i A 2Yr 2Y9 17 2 Ya 1 034156 680 2w 194 PORT PAT ESN 9 RES TOUT lt 3 as 6 ics f Tec K U 2w 555 ics 54 625042 To 234989 1914 5 2 4 GND 4 5 Wie ee 221 gt 7 H 2 1082304 c9 40515 46 T 47 716v ange RI 92 7 m 2841015 9v iC 12 eR RES a TDUR 28 ISERNIA to go 14 ee AIRE vr SR 5 me JS Ed ml 4 s E 2 Ros ee MN 105 P OSD d CEST NE 4 s ono 0 7 2 3 Jud Pad PINS 57 LNT Ea SE 24 O PIN 2 PING PIN 3 ia ICN2 T SO 60 20 70 D 80 ens ONLINE LEC IC 4 CLR d POWER LED 40 50 30 60 20 70 PINS ONLINE Sw son 6 OOV PIN 6 sig FOR 2 5 ONLY 8039 READ a as aa i PIN 7 FOR 20 5 ONLY 92 fer 9 282 283 14 552 13 1 es 2 E PIN 8 PE 1016 2732 1015 7415244 09 203 832778 1124 3 Os 8 2 5 3k 8 D De
5. sng 043409 Hn3412 20 ZHN 3201 euw eiuondo a Driver Board Block Diagram Printer Head drive mechanism CPU board FEED step motor and Timer circuit CR step motor and drive circuits drive circuits CR Step motor Carriage driving step motor Timing belt motor TROUBLESHOOTING CPU BOARD amp DRIVE PWB START Set ribbon amp Printing paper Turn power on Is power circuit normal Is printer mechanism normal Does paper FEED TOF Push FEED SW and turn power on again Does the self check printing per form correctly Is printing normal YES Turn power on again Printing ON LINE TOF Top of Form 5V 15V 26V 21 5 to 26 5V Check power circuit Check printer mechanism FEED TOF SW circuit Check FEED drive circuit Check CR step motor drive circuit amp printing head drive circuit Check printing head drive circuit amp FEED circuit Check printer interface circuit amp card FEED DRIVE CIRCUIT FEED TOF SW CIRCUIT Is switch PWB Connect switch PWB connected When FEED amp TOF switches are pushed is there low level at for IC ins 2 CPU board Check FEED TOF switches and 5 6 20 19 74LS125 15 there a signal Check select circuit 1 at IC 6 pins 1 4 25 1815 Is there signal Check latch circuit at Q23 base 258743 Is there 26V
6. Cartridge case frame Fig 2 41 3 Remove the used ink ribbon Cartridge case lid Used ribbon Ribbon braking Cartridge case frame Fig 3 Note Fig is an illustration and there is no need to remove everything as shown If you do remove everything the relative positions are as shown in the figure 4 Remove the new ribbon with the ribbon package from its cellophane case New ribbon 94VER 04 1 Ribbon package Cellophane case Fig 4 5 Put the new ribbon into the cartridge 1 Leave the ribbon in the package and put it into the cartridge as shown in Fig 5 2 Pass the ink ribbon through the path as shown in Fig 6 3 Hold the top of the package with your hand and pull out the bottom of the package in the direction of the arrow Fig 5 4 Remove the top of the package Note The ink ribbon is not removed from the cartridge 9 Cartridge case lid Ribbon package Bottom of package Fig 6 Cartridge case frame Fig 5 6 Put in the cartridge case 7 Turn the ribbon feeding rooler in the direction marked on the cartridge and check that the ribbon is not pinched between the ribbon case Ribbon feeding rollwer Fig 7 Note After replacing the ink ribbon make a check on the cartridge label that indicats number of times the cartridge ribbon has been replaced After 5 checks use a new cartridge ribbon Example PLATEN INKED RIBBON ___
7. gt 15 VCTYPU1BD104Z 1 12V Ceramic AB D1 5 02 VHD1S1555 1A 151555 25 C8 VCSACU1VE105K 1MFD 35V Tantalume AC RESISTORS C11 VCCCPR1H3101J 100PF 50V Ceramic AA C12 VCEAAU1EW107M 100MFD 25V Aluminum AB R1 C13 VCEAAUT1AW107M 100 10V Aluminum AB R2 VRD SC2EF471J 470 ohm 1 4W AA R7 MISCELLANEOUS R3 VRO SC2EF223J 22 Kohm 1 4 me X TAL RCRSAO009PAZZ Crystal 8 MHz AN 70086 QPLGZOO86PAZZ 25 Pin Terminal BF RG 70083 70083 22 34 Pin Terminal AS MODEL MZ 80P5 PARTS LIST REF PART NO DESCRIPTION CODE REF PART NO DESCRIPTION CODE NO NO Z0084 OPLGZO0084PAZZ 40 Pin Terminal AT R3 DSOCNO138PAZZ Lead Wire with 7 Pin AH E VRE HUPEEIDNA CHE 144W A Socket R4 VRD RU2EE153J 15K ohm 1 4W AA 0504 OPLGNOSO4CEZZ 5 Pin Terminal AB R5 VRD RU2EE102J 1K ohm 1 4W AA 050 20010 22 24 IC Socket AF R6 QSOCZO0012PAZZ 40 Pin IC Socket AH R9 A R7 VRD RU2EE332J 3 3K ohm 1 4W AA R8 VRS PT3DB681J 680 ohm 2W AB DRIVE PWB UNIT SECTION R11 R12 DPWB 0216PAZZ Assembled Drive PWB Unit R16 VRD RU2EE122J 1 2K ohm 1 4W AA Not replacement item R19 INTEGRATED CIRCUITS R13 VRS PT3DB821J 820 ohm 2W AB IC1 RH iX0134PAZZ NE555 AG R15 2 RH iX0038PAZZ SN7406N AG RR KZOOG60PAZZ Resistor Arry AD IC3 3 3K ohm x 9 RA2 Resistor Arry AC TRANSISTORS B RR KZ0061PAZZ Q1 YO RVR
8. 5 0047 22 PZETNOOO9VAZZ Insulating Washer AA for TA78015 PSPAMOOO1VAZZ Insulating Sheet AA for TA78015 36 PSPAYOOOS3PAZZ Insulating Cover AB OTHER SECTION INTEGRATED CIRCUITS 9 GCABAB207PASA Cabinet A bottom BF 10 GCABB8207PASA Cabinet B upper BK 4 0077 22 11 DCABC8207PASA Cover Assy AU 2 11 1 Cover AQ IC3 4 0181 22 SN74LS175N 11 2 GCOVAOO06PASA Transparent Cover AM IC6 ae CODE AC AE 96 REF PART NO DESCRIPTION CODE REF NO NO 5 RH iX0141PAZZ SN74LS125N AK 115 ICA RH iXO1O4PAZZ SN74LSA2N AH 116 RH iX0074PAZZ 5 741504 117 RHixooisPAZZ 5 7416 118 120 RESISTORS 121 122 R1 123 i VRD RU2EE391J 390 ohm AW AA 124 R12 125 R13 126 i VROD ST2HF221J 220 ohm W AA 127 R24 128 R25 129 4 VRD RU2EE560J 56 ohm W AA 130 R34 131 132 CAPACITORS 133 134 C1 VCEAAU1CW107Y 100MFD 16V Aluminum AB 135 C2 136 1 VCTYPU1BD1042 O 1MFD 12V Ceramic AB 137 C10 138 C11 139 1 VCCCPR1H3101J 100PF 50V Ceramic AA 140 141 C23 VCKYPU1HB102K 1 000PF 50V Ceramic AA 142 143 MISCELLANEOUS 144 m 145 QPLGZOO86PAZZ 25 Terminal BF 146 LANGKO297PAZZ 25 Terminal Fixing AG 147 Metal 148 149 PRINTER MECHANICAL UNIT SECTION 150 151 101 94V F303002000 Frame LA AZ 152 102 94VF303003000 Frame RA BA 153 103 94V
9. 10 16V Aluminum 0 1 MFD 50V Film 10 Ceramic 1 MFD 50V Aluminum CODE AB AA AD AC AC AE REF PART NO NO C26 C27 VCCSPR1H6221J C28 C29 MISCELLANEOUS X TAL1 J 5 0013 22 4 figs d my 2 ks QFS JO002PAZZ CN2 050 20017 22 CN3 20086 22 33 DSOCNO151PAZZ 34 QLUGPOO003PAZZ QSOCZ0010PAZZ 050 20012 22 35 QPLGNOBOACEZZ SWITCH PWB DPWB 0310PAZZ DIODES D1 RH PX0047PAZZ 02 RH PX0033PAZZ RESISTORS R4 VRD SC2EF121J VAD SC2EF271J MISCELLANEOUS SW1 ied QSW PO010PAZZ BUZZER PALMB0003PAZZ 1 DSOCNO164PAZZ 2 PSPAK0006PAZZ POWER SUPPLY 17 22 DBOXD0027PAZZ DBOXDO0032PAZZ DESCRIPTION 220 PF 50V Ceramic VCQYKUI1HMI1OS3K 0 01 50V Film Crystal 6MHz Fuse 1A 2 Fuse 2 oe BEE 54 1 28 Pin Socket 25 Pin Terminal Lead Wire with 9 Pin Socket 1 Lug 24 Pin IC Socket 40 Pin IC Socket 5 Pin Terminal UNIT SECTION CODE AB BF AK AA AF AH AB Assembled Switch PWB Unit Not replacement item LED Green LED Red 120 ohm W 270 ohm HW Top of Form Line Feed Switch Buzzer Lead Wire with 9 Pin Socket LED Spacer UNIT SECTION Assembled Power Supply Unit Not replaceable item for 220V Assembled Power Supply Unit Not replaceable item for 240V Assemb
10. 22 emitter Check 26V power circuit for DRIVE PWB 25 1815 Check 023 039 022 2SB 743 552778 Is there 26V signal at VB24 Is there a signal Check connecting line amp at 2 pins 1 9 latch circuit Is there a signal Check 011 12 13 14 250 986 at 011 12 13 14 Check 1 2 7406 Check step motor for FEED PRINT HEAD DRIVE CIRCUIT for DRIVE PWB check 555 Is there a signal NO at pin 2 YES 555 NO Is there a High level at 1C1 pin 4 YES 555 Is there a signal n at IC1 pin 3 YES 2841015 Is there a 5V NO signal at Q20 collector YES 28C1815 NO Is there a signal at Q19 collector YES NO Is there a signal at CN1 Pins 2 to 10 YES NO there 26V at CN2 pins 10 11 YES 250986 NO there a signal at Q1 to 8 collector YES Check printer head Check TIMING circuit Check latch circuit 555 Check and adjacent circuit Check Q20 21 and adjacent 2SA1015 circuit 2801815 Check Q19 and adjacent 2SC1815 circuit Check latch circuit Check 26V power circuit Check Q1to8 25 986 01108 D10 to 17 RA1 15953 CIRCUIT CONNECTED WITH CR STEP MOTOR DRIVE Is there a signal at 025 base Check latch circuit 25 1815 258743 Is there 26V at t Q27 emitter Check 26V power circuit 25 1815 258743 for Is there 26V at Check Q25 27 04
11. Block Diagram of Power Supply Circuit Rectifier section Regulator Smoothing i 26V section 21 5 26 5V section AC 220V Filter Power Rectifier Smoothing Regulator C 45V AC240V section transformer section section section for UK Rectifier Smoothing Regulator 15V section section section 18 Troubleshooting Power circuit is abnormal Are all output terminals OV Is voltage on secondary side of power transformer normal NO Check power transformer and input circuit Is 26V terminal NO Is 0101 collector Check BD103 F103 normal approx 30V C103 C104 YES YES 1 Q101 base Approx 26V NO Check R101 20102 0102 YES Check Q101 output connector NO 15 1C102 Pin 3 approx 10V NO Check BD102 F104 C105 Is 5V terminal normal YES YES Check 1 102 output connector NO Is 16101 pin 1 approx 20V NO Check BD101 F105 C106 1 15V terminal normal YES YES output connector 410 FUNCTIONS OF PRINTER PARTS Exterior of Mechanism and Names of Parts Paper sensor Platen P Adjusting lever Sprocket unit Ribbon driving gear HP Sensor Carriage Print head Paper feeding motor Timing belt Timing beit motor Sensing Mechanisms Sensing mechanisms consist of HP sensor PTS sensor and PE sensor The HP se
12. 11 By Changed to PRDAROO43PAZZ Sub Radiator during production 1C102 3552 are attached to Sub Ragiator The secondary lead wire of main transformer will be passed between the transformer and the secondary power board N 7 102 513552 68 Printer Mechanical 10 70 69 Sack SSAKHOO33PAZZ Packing case SPAKCO125PAZZ a Packing Add L SPAKAO043PAZZ Packing 44 272 Braided Wire Label for UK SESA DTip 0052PAZZ TLABHOO02PAZZ ms AC Cord QACCKOO50AFZZ QACCBOOO1PAZZ for UK SESA SS Ink ribbon E MN Instruction manual Sometimes not packed in same case Paper guide roller PGiIDPOO01PAZZ Signal cable DSOCZ0010PAZZ Paper guide DGiD 0005P AZZ SPAKSOO69PAZZ REPLACEMENT PARTS LIST HOW TO ORDER REPLACEMENT PARTS To have your order filled promptly and correctly please furnish the following information 2 REF NO 4 DESCRIPTION 1 MODEL NAME 3 PART NO NOTES Be sure to use regular parts for securing the safety and reliability of the set Parts marked with A are im portant for maintaining the safety of the set Be sure to replace these parts with specified ones for maintaining the safety and performance of the set MODEL MZ 80P5 REF PART NO DESCRIPTION CODE REF PART NO DES
13. Timing belt motor assembly 94V F303027000 Belt motor heat sink 94V F303026010 7 Remove the timing belt motor assembly from the timing belt motor heat sink 8 Remove the PTS sensor board assembly 9 Remove the belt driving pulley E ring When removing the belt driving pulley first loosen the timing belt Refer to page 34 10 Remove the ball bearing from the belt driving pulley Belt driving pulley e 94VF303017000 d Ball bearing 94VB210151490 Belt motor heat sink PTS sensor board 94VF303026010 94V F303029000 6 2 Assembly and Adjustment 1 Attach the timing belt motor assembly to the timing belt motor heat sink 2 Attach the PTS sensors board 3 Place the ball bearing in the belt driving pulley 4 Putin the belt driving pulley 5 Attach the timing belt motor assembly and timing belt motor heat sink to the frame Check the gear backlash C should be minimum 6 Attach the paper feeding motor assembly to the frame Check the gear backlash C should be minimum Timing belt motor backlash Paper feed motor backlash 7 Timing Belt 7 1 Disassembly 1 Remove the timing belt motor assembly and motor heat sinker 2 5mm screw x 2 Do not mix up the screws Refer to mark in the figure 2 Pull the timing belt from carriage assembly A 3 Loosen the lock screw on the belt tension plate and remove the timing belt 2 5mm screw Belt tension plate 94VF303
14. o 271A e on 552778 16 72 IC 20 7TALS273 Da 852778 ae cp 04 230986 1C22 27167 3230 es a wh To ROS 32 Do LI De Oa Os Os Or mI Mad 3 Sam 3 2 amp 0 44 9 4 1 9 14 1062003 15095 1943 3 Su pu 13 758 77 758743 5 2 6 3 c b a3 920724 lt 062203 505 tae D 0 2 505 L306 412 2 3 G2 150 12 1505 4804 Parts marked with A are important for maintaining the safety of the set Be sure to replace these parts with specified ones for maintaining the safety and performance of the set T9400 REN 5 ewe A eal CPU Board Circuits 2 CN3 CN 1 vs 249 CONMECTOR To OPTION UNIT RC O2 04 ADS ROG RO ROB ROA ROT OPTION CON 25 CONNECTOR 2 222324 YP O 9 9 0 9 0000020020090 OO 59 5v 18 9 20 11111113 14 E R23 LUN 2 E EM ELE UE ERE NN 1 zzorr 247 sl perpe 3 por um ji C o 2 Vico p 75189 M 75 89 45 22 i5 123 ROPO ARTO EE A 25 26 Prien 821 3 E 27 28 recor 2 2 3 142 244 1A ient
15. NO 1s 5V supplied NO to PTS sensor Check parts related with power supply Is PTS signal output level normal Is PTS signal period regular YES ON 15 it normal if PTS ie a Check parts related waveform amp is TER k parts related 2 Y 2010 with control changed with control 1 NO NO Check Is contact of PTS YES Wire as Phenomenon 2 sensor lead wire in section 4 2 alright NO PTS sensor Replace as in section 4 Phenomenon 10 Fast digit characters of printing shifts YES After a time it slips with NO no relation with previous correction Is position of paper correct Correct positioning of paper Replace as in ction 1 1 2 Are both right and left sprocket lock levers securely locked Lock them After a time it slips again securely It slips regardless of correction Check that it has Fasten it same period as PTS securely Is HP sensor securely fastened Does it have same period as PTS Check Phenomenon 9 49 11 Printing paper is dirtied by ink ribbon After a time does Is ink ribbon YES Stretch ribbon by turning knob it get dirty again loose Is ink ribbon path correct Put cartridge ribbon in correctly Repair as in section 10 2 1 ribbon mask attached
16. 0 2Y 1 2v 273 iv 2 2 RIS FS S 2 ON 12 aay F3 T2A 04 6 0 d 2 PWB CPU Board Section 1 5 2 gt gt b o a o o 4 4 9 v o amp o 7 ca BM e S LUN ET 56 vs 3 oe X Mz 80P5B 45 2 47 47 oe CE gt 11811 Som TT cor AM e fs m mo wen a ao 97 1 3 Sow gt gt ee 2212 K UV 6 6 9 6 0 9 4 Grace s S AFSL 274 444 43444131 2 See Ta po 2 oe E 8S v 5 SN 3 72 49 221622 1962 START s 9699525660202 gt 09 09090689 ao 21 je Sene on fie C030 jeo LATE 9 e 1 20 5 00262 020 5 NS 1 11835 2 5 MZ BBP5R 2 8 5 or MZ 8KP5R 9 0 1 For MZ 80P5 only This Wire Used For MZ80P6 only 11 eee aa ee
17. 2 5 4l loins c 5 6125 PIN6S al O 9l lol bone PCr R S OPTION de PWB CPU Board Section Perspective View Parts fitted face Opposite side ul woes Ss e or 4 60 844248 0 11 9860 vez 67 EEA 9 is Agizo Lg 1NMd s6s ts ircut lessis 20 Drive PWB C 10 11 A B C D E E G a PWB Drive Board Section ul gan 81 E ee Perspective View Opposite side Power Supply Circuits AT 101 BD103 54 10 Q101 r FUSE F103 250833 AASW101 FUSE F101 A S0101 C101 250V ANT 1A FUSE F102 0101 S2VB10 FUSE F105 15V Parts marked with are important for maintaining the safety of the set Be sure to replace these parts with specified ones for maintaining the safety and performance of the set O FUSE 1A FUSE IA PRIMARY FUSE IA 0105 3 FUSE 2A O SECONDARY 63 Card Circuits PRINTER CONNECTOR LSO4 STATUS 1C9 1C8 7416 D call 1 0 CONNECTOR PARTS SIDE Perspective View Parts fitted face Opposite side D E F G H DISASSEMBLED VIEWS TOES 66 10
18. A 2 Replacement procedure Move the carriage to the graducation 80 side of the scale Move the scale to the print head unit side Remove lock screws 3 of paper guide plate A 7 Remove paper guide plate A by lifting it up from the side opposite the Carriage Put a new paper guide plate A in from the carriage side Tighten lock screws 3 for paper guide plate A Oar wn BB Repair 8 Check abnormalities of print head unit 1 Check points and Method 1 Measure the DC resistance of the print head unit coil Standard approx 2282 coil Aen 3 7 0 N 2 Method of repair 1 If DC resistance of the coil does not indicate standard change the print head unit 56 10 11 CPU Board Circuits 1 40 P CONNECTOR OPTION CON rs ADR 5 2 Z D FE z A R29 R24 220 8MHz R25 4 560 1 8 m 220 5 3 4 gt Wy gt gt 2 1 Ca 04 04 04 IOoPF R30 0 81568 4 WE ca B ar 8 9 0 470 7 IRT 0 1C2 Ic 75189 2200PF 57 To OPTION UNIT i X X X39 6636 6968 OOOODOQHQQQOOOOOQOGSOQOGOGEGSO GND 37 38 39407 1 1 1 1 1 1 1 1 1 11 17111717117171717171 17171 1717 1 1 17171 1 1 1 177 SV 1 2 5V J K L M Notes The circuit diagram and printed wiring board subject to change without
19. M0038PAZZ Variable Resistor 22K ohm AE 5 zn VS2SD986 1 250986 CAPACITORS 2d iy C5 VCKZPR1HF103P 0 01MFD 50V Ceramic AA Q23 VS2SC1815 1 25 1815 6 025 E VCEAAU1CW106Y 10 16V Aluminum AB 522 SANS Ae C8 VCQYKU1HM104K O 1MFD 50V Film AB aas aaa in E C9 VCKZPU1HF102P 0 001MFD 50V Ceramic AA MISCELLANEOUS DIODES CN1 QSOCZ0023PAZZ 34 Socket AX CN2 OQS6CZ0017PAZZ 28 Pin Socket AL 6 VHD1S1555 1A 151555 08 SWITCH PWB UNIT SECTION D10 DPWB 0217PAZZ Assembled Switch PWB Unit VHD1S953 1 15953 aded D36 D19 TRANSISTORS AND DIODES D26 Q1 VS2SA1015 1 2SA1015 AC Q2 VS2SC1815 1 25 1815 RH DX8402Y 22 5277 D1 RH PX0047PAZZ LED Green AD D2 72 LED Red AD D37 5 RESISTORS D42 21 R1 VRD SC2EF102J 1K ohm 1 4W AA R2 VRD SC2EF103J 10K ohm 1 4W AA tM VHD 1224 1 1224 Zener AD R3 VRD SC2EF332J 3 3K ohm 1 4W AA R4 VRD SC2EF121J 120 ohm 1 4W AA ZD7 VHDO5Z5R6U 1 05Z5 6L U Zener AB R5 VRD SC2EF271J 270 ohm 1 4W RESISTORS MISCELLANEOUS R1 R2 VRW KT3HD121J 120 ohm 5W AC Swi OSW POO10PAZZ Top of Form Line Feed AD SW Switch a 0 ZS bpppbbpb b MODEL MZ 80P5 PARTS LIST REF PART NO NO BUZ PALMBOOO3PAZZ ZER 1 DSOCNO139PAZZ 2 5 77 POWER SUPPLY UNIT SECTION DBOXDO017PA
20. Printed Wiring Board Card Section 4 9 a ET 5 4 e o t e 90 9 eom 5 2 ea v Perspective View Parts fitted face Opposite side EN 5 i 7 HOW TO ORDER REPLACEMENT PARTS 77 7 To have your order filled promptly and correctly please furnish the following information BEE 972225 F MODEL NAME 2 2 NO ig et 2745 98 PART 04 DESCRIPTION E NOTES Be sure to use regular parts for securing the safety and reliability of the set Parts marked with important for main taining the safety of the set Be sure to replace these parts with specified ones for maintaining the safety and performance of the set MODEL 2 80 5 NO CPU BOARD UNIT SECTION New CPU board DPWB 0307PAZZ Assembled CPU Board Unit without ROM IC16 for CG and IC13 control Not replaceable Item DPWB 031 1PAZZ Assembled CPU Board Unit with ROM 1 16 for CG and 1C13 Control to be use for MZ80A Not replaceable tem DPWB 0312PAZZ Assembled CPU Board Unit with ROM 1 16 for and 1 13 control to be use for MZ80A Not replaceable Item INTEGRATED CIRCUITS 4 0295 22 5 741505 2 2 4 0292 22 TD62504P TR Array 5 RH iX
21. UNIT SECTION 2 80 depending on destination 11 5 741530 DESCRIPTION CODE PART NO NO NO BD101 VHDS2VB10 f X S2VB10 Bridge Diode AG 12 PGUMS1010PASA pen VHDS4VB10 F S4VB10 Bridge Diode AK 22 20101 VHEO5Z6R8Z 1A4 0576887 Zener Diode AB TSPCEO034PAZZ 20102 126 1 EQBO1 26 Zener Diode AD 3 wy meis RESISTORS 443 5 22 8101 VRO RU2EE102J 1K ohm AA R102 2 561 560 ohm 21 22 GAPACITORS alia unt A iC101 y 440 047 MFD 250V lt ayd 14 HBDGDO004PASA A C102 RCCZO180PAZZ s ekine Capacitor 67 A 15 HBDGB1002CES C103 VCEAAU1HM108M 1 000MFD 50V Aluminum AF 16 PGUMZ0002PAZZ C104 568 5 600MFD 50V Aluminum 17 PGUMZ0003PAZZ C105 VCEAAUICM688M 6 800MFD 16V Aluminum AG 18 20004 22 C106 VCEAAU1VM338M 3 300MFD 35V Aluminum AG 19 GCOVA0007PASA C107 VCEAAU1VW336M 33MFD 35V Aluminum AC 20 DSOCZ0010PAZZ C108 107 100MFD 10V Aluminum AB 21 DBTN 0002PASA C109 VCTYPUIED104Z2 O 1MFD 25V Ceramic AB C110 VCEAAU1EM107M 100MFD 25V Aluminum 22 15 0009 27 111 020003 22 0 100V Film 23 LSTYMOO10PAZZ 24 LX BZ0076PAZZ MISCELLANEOUS 25 DKNB 0002PASA 26 LFiX 0009PAZZ 7101
22. at IC11 pins 18 to 25 YES 74LS273 NO 15 there a signal at IC8 9 10 pin 11 YES 741 5273 15 1 8 9 10 pin at High level NO YES Check 1C8 9 10 Check chip select circuit Check IC 26 Z 80A Check 74LS02 Check 1C12 741504 For CPU board check Check IC 11 8255 Check 1 11 8255 Check reset circuit 8253 TROUBLE For CPW board check Is there a signal at 23 pin 15 Check oscillator circuit 2MHz Is there a signal at 1 23 pin 13 Check 1 26 2 80 Is there a signal at 23 pin 21 Check chip select circuit Is there a signa at 1 23 pins 20 19 1 to 3 23 22 Check 1 23 2 80 TROUBLE For CPU board check Check 26 Z 80A Is there a signal at 1626 pin 6 Check oscillator circuit 1 26 26 at k ircuit a Low level Check reset circuit Is 26 pin 24 25 at a High level Check R30 Is there a signal at 1 26 all terminals Check each BUS line YES Check EP ROM RAM circuits CHIP SE LECT CIRCUIT For CPU board Check 15 there a signal at 1 27 pin 13 Check 1C26 Is 1C27 pin 12 at Check 1 16 a Low level Is there a signal at 1C24 12 Check 1C27 74LS32 Is there a signal at 24 pins 13 14 Check 1C26 15 Is there a signal at 1 24 em d to 7 Check 1 24 741
23. board assembly Put in the screws temporarily 2 Solder the lead wire to the terminal board 3 Check the relation between the PTS signal and HP signal Check the wave form with a synchroscope Check that the print head has been set 4 When the phase is not right adjust it by moving the HP sensor board in the direction of the arrow 5 After adjusting fix the screw lock and paint the screw to lock it HP Signal PTS Signal 0 9 1 2ms 6 Motor Assembly Timing belt motor assembly paper feeding motor assembly belt driving pulley 6 1 Disassembly 1 Remove lead wires of the timing belt motor assembly from the terminal board 2 Remove lead wires of the paper feeding motor assembly from the terminal board 3 Remove the PTS sensor lead wires from the terminal board 4 Take off the wire band Wire band Timing belt motor assembly lead cable 5 gt Black 4 o o gt Yellow Blue Timing board For PTS Sensor For paper feeding 4 motor assembly aa o assembly Green Green Red White Black Yellow For timing belt motor assembly 5 Remove the paper feeding motor assembly 2 5mm screw x 2 When removing it only take out the two screws shown in the figure so that the motor heat sinker and HP sensor board assembly come out together 6 Remove the timing belt motor assembly 2 5mm screw x 2 Paper feeding motor assembly 94VF303031000
24. correctly Incline scale to side of paper Is scale pressing paper firmly To repair 6 1 clearance correct after adjusting with adjusting lever 15 clearance between print head and platen correct Adjust with adjusting lever Repair in section 10 2 7 Is it corrected when cartridge ribbon is changed Replace cartridge ribbon To Repair 7 15 paper guide plate A put in correctly Put paper in correctly Is paper put in correctly Use paper 15 paper within within standards standards Phenomenon 12 Printing is light Is ink ribbon almost used up Replace for a Does it immediately new cartridge ribbon become light again Put cartridge ribbon in correctly Is the cartridge ribbon put in correctly ribbon fed when carriage moves left and right Check Phenomenon 4 Is clearance between tip of print head and __ platen correct Is paper within standards Is clearance correct after adjusting with adjusting lever Repair as in section 10 2 Adjust with adjusting lever Use paper within standards Phenomenon 13 Printing is light and dark Is clearance correct after adjusting with adjusting lever Is clearance between Adjust with tip of print head
25. fixed with lacquer after adjustment Note Before checking pulse width calibrate the synchroscope to eliminate error in time base Synchroscope to be connected here Collector of Q19 400 210 psec E Head driving coil energizing pulse signal For pulse width adjustment 2 24V Current capacity 1 5A or more EIE gt c TE 3 45445 0 10 0 C Drive PWB unit CPU Board Unit Connecting diagram for power supply and synchroscope D I O CARD REPAIR PROCEDURE Procedural steps STATUS information Do RDA and Check 4 RO signals come 5 7 Mechanical trouble Family check Empty of paper Are letters printed YES Check 1 2 n Check if printed 3 8 9 letters are proper Do WO and RDP signals come Check IC1 2 3 4 7 8 9 YES Checking method of printer interface circuit 1 Press insulated part of IC with finger to check if it is abnormally heated IC improper too large load in IC touching between circuits if there is unappropriate faulty soldering improper printed wiring 2 Use a synchroscope to check if input and output logics TTL IC do not match Defective IC gate if TTL IC voltages are within the TTL level Note TTL level High 2 4V or more Low 0 5 or less POWER SUPPLY SECTION
26. on page 33 Check the HP signal and PTS signal Refer to section 4 2 on page 29 and section 5 2 on page 30 Including sprocket transmission gear 9 1 Disassembly Remove the sprocket unit Refer to section 1 1 on page 25 Remove the paper feeding motor Refer to section 6 1 on page 30 There is no need to remove the soldered lead wire Remove the sprocket transmission gear E ring Remove platen A 3mm screw x 4 35 94VB101252190 Planetary pinion 94V F303020020 Platen 94VF303004000 Sprocket transmission gear 94VF303001080 Paper feeding motor assembly 94V F303031000 9 2 Assembly and Adjustment 1 Temporarily fasten platen A to assembly LA and RA 3mm screw x 4 2 Determine the position of platen and paint the screws to lock them after fastening them Determine the position of the platen then push in the direction of the arrow so there is no space between the platen and positioning pins and then tighten the lock screws 3 Attach the sprocket transmission gear E ring 4 Attach the paper feeding motor Refer to section 6 2 on page 32 5 Attach the sprocket assembly Refer to section 1 2 on page 26 Positioning pin Lock screw Platen A Positioning pin S 10 Adjusting Lever Including adjustment of basic space between platen and print head 10 1 Disassembly 1 Move the adjusting lever to the middle step the hole in frame LA 2 Remove the
27. 019000 Timing belt 94VF303014010 Carriage assembly A 94VF303006000 Timing belt motor assembly 94V F 303027000 c Figure viewed from direction of arrow Motor heat sinker 94V F303026010 82 7 2 Assembly and Adjustment 1 Hang the timing belt on the belt driving pulley and belt driven pulley 2 Insert the timing belt into the carriage Carriage assembly A 94V F303006000 Timing belt 94V F303014010 3 Temporarily fasten the belt tension plate while gently stretching the timing belt 2 5mm screw x 2 4 Adjust the tension of the timing belt Using the hole in the belt tension plate adjust it to its rating on the spring scale Standard value 13009 509 5 Tighten the lock screw after the adjustment and paint the screw to lock it 2 5mm screw Belt tension plate 94VF303019000 8 Belt Tension Plate Assembly Including ribbon driving gear 8 1 Disassembly 1 Remove carriage guide side A 1 Remove E ring on frame LA 2 Remove the nuts on carriage shaft A 4N x 2 3 Move the carriage to frame LA side and pull carriage shaft A out to the right Frame LA 94VF303002000 Carriage shaft A 94V F303001010 Frame RA 94VF303003000 2 Move the carriage to the center between frame LA and RA 3 Remove the home position sensor assembly 2 5mm screw E ring There is no need to remove the soldered lead wire 4 Remove the lock screw the belt te
28. 0V Power Supply Transformer for UK 240V Line Coil Fuse 1 Fuse T3 15A Fuse T2A A C Switch Appliance Inlet Lead Wire with 5 pin Socket Radiator Fuse Holder A gt gt p 11 1 11 2 12 A13 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 INTEGRATED CIRCUITS IC1 2 6 165 4 IC8 9 T LANGKO0325PAZZ LANGKOS326PAZZ DESCRIPTION Switch Fixing Metal PWB Fixing Metal Changed during production PRDAROO43PAZZ PSPANOO05VAZZ QLUGPOO005PAZZ Sub Radiator PWB Fixing Spacer Appliance Inlet Joint Pin x x OTHER SECTION GCABA8207PASA GCABB8207PASA DCABC8207PASA GCOVAQO05PASA GCOVAOO06PASA PGUMS1010PASA TSPCEDO15PAZZ TSPCE0021PAZZ HBDGDOOO04PASA HBDGB1002CES PGUMZOO02PAZZ PGUMZOOOSPAZZ PGUMZOOOAPAZZ GCOVAO0007PASA DSOCZOO10PAZZ DBTN 0002PASA LSTYMOO09PAZZ LSTYMOO10PAZZ LX BZ0076PAZZ DKNB 0002PASA LFiX 0009PAZZ 15 22 DGiD 0005PAZZ PGIDPOO01PAZZ DTiP 0052PAZZ LBNDCOO01PAZZ PKYU 0001PAZZ LX BZ0079PAZZ QACCKOO050AFZZ 22 TLABHOOO2PAZZ 94 04 1 94VER 04 1 TiNSEO021PAZZ Cabinet A bottom Cabinet B upper Cover Assy Cover Transparent Cover Foot Specification Panel for SEEG SESA Specification Panel for UK Badge SHARP Badge Rubber A B C Connector Cover Signal Cable Top of Form L
29. 1 S5277B DRIVE PWB VA24 15 there a signal Check connecting line and at pins 1 9 latch circuit 2SD986 15 there a signal at Q15 16 17 18 Check Q15 16 17 18 250986 collectors 1C3 7406 74LS14 Timing Circuit 8253 ls there signal 1 4 2SC1815 at ICA pin 8 R10 14 15 741514 741 504 Is there a signal Check 1 15 19 5 17 74LS08 at C23 pin 11 R17 C10 74LS10 74LS74 for CPU board 7415125 Is there signal at 1 6 pin 13 Check select circuit 1 15 there a signal at 26 pin 16 Check 1C23 Check CR step motor PRINTER INTERFACE CIRCUIT For CPU board check Is interface card connected 74LS125 Are 3 input output signals the Is there a signal at 1 2 pin 11 Is 16 pin 11 at High level Is 1C16 pin 10 at Low level Is there a signal at 1C16 pin 13 Is there a signal at 1 16 pin 12 YES Check 11 8255 Connect cable Check 3 74LS125 Check 2 Check latch circuit Check 16 Check latch circuit Check 1 16 SELECT CIRCUIT 1 For CPU board check NO Is there a signal at 1C13 pins 8 9 YES 74LS02 NO 15 there a signal at IC13 pin 8 YES NO 15 there a signal at 13 pins 10 13 YES 74LS04 NO 15 there a signal at 12 pins 8 2 YES LATCH CIRCUIT 7415273 NO Is there a signal
30. 52030 94VF303352040 94VF 303352050 94VF 303352060 94VF 303352070 94VF 303352080 94VF303352090 94V A260112001 94 303025000 DESCRIPTION Belt Tension Plate Platen A Carriage Assy A Head Lock Lever Head Lock Lever Spring Carriage Shaft A Carriage Shaft B Adjusting Lever Scale Scale Spring L Scale Spring R Ribbon Mask Head Sitting Plate Print Head Unit Outer Paper Guide Inner Paper Guide Sprocket Frame Sprocket Wheel Paper Holding Cover G Pin Paper Holding Cover Spring Sprocket Lock Lever Sprocket Shaft Sprocket Gear Plane Bearing Leaf Spring 6 0 15 11 Spring Pin 2 14 Sprocket Guide Shaft Paper Guide Roller Sprocket Transmission Gear Paper Guide Plate A Planetary Lever Assy Planetary Pinion Leaf Spring 3 0 07 6 Ribbon Driving Gear Cartridge Case Lid Ribbon Feeding Knob Ribbon Pressure Roller Ribbon Separator A Ribbon Separator B Ribbon Feeding Spring Ribbon Braking Spring Ribbon Label Head Connector 3210 Cable A ODE AT BK AZ AK AC BD BK AN AX AF AF AL AH BU BA AY AX AR AQ AC AD AL BF AK AE AB AB AQ AT AK AZ AN AG AC AN AX AK AK AK AK AE AE AH AP BL MZ 80P5G H S A810220KS Printed in Japan MZ 80P5 SHARP _ SERVICE MANUAL 7 CODE 002 280 5111 Dot Printer Wit A 8 22 14 43 d a ted HH E Ir Ey o lt 4 Sr base a ES OA Durs T
31. 542 9 Is there a signal at 1 17 pin 6 82 Check 1 17 741 508 8255 TROUBLE For CPU board Check NO Is there a signal at IC11 pin 6 Check chip select circuit 15 1011 pin 35 at Low level Check reset circuit a Is there a signa at 1C11 pins 8 9 Check 1 26 27 to 34 36 5 Is there a signal at IC11 pins 10 to 13 Check 1 11 18 to 25 EP ROM CIRCUIT For CPU board check 15 there a signal at 1C27 pins 1 4 Check 1 26 Is there a signal at IC27 pins 2 5 Is there a signal at 27 Pins 3 6 Check 1C27 741 532 Is there a signal at 22 25 pins Check 1 26 7 80 1 to 8 19 21 to 23 2 16 there a signal at 1C22 25 pins Check 1 26 2 80 9 to 11 13 to 17 YES Check chip select circuit 1C22 ROM 1 RAM CIRCUIT For CPU board Check 15 there a signal at 1C14 18 pin 8 Check chip select circuit 15 there a signal Check 1 2 at IC21 pin 9 Is there a signal at 1C27 pin 8 Check 1 27 74LS32 Is there signal at 14 18 pins 15 16 19 1 2 3 4 7 6 5 Check 1 26 Is there a signal at 1C14 18 pins Check 1 26 14 13 12 11 YES IC14 RAM 1 Check 1C14 18 1C18 RAM 2 ADJUSTMENT OF HEAD DRIVING COIL ENERGIZING PULSE WIDTH This concerns the printing energy force for the head wire to print a dot and its length in time as well The shorter the energizing pulse width time is the smaller the printing en
32. 6 94VF303013010 AUC E Sprocket bearing sg 915 11 94VC601302050 94 101251490 SProcket gear 94VF 303013020 8 3 Attach the sprocket wheels to have the sprocket numbers be in the same direction and same angle in relation to the sprocket shaft Note the direction for inserting the paper guide roller Sprocket lock lever Sprocket LA Assembly Paper guide roller 94V F 303010020 Sprocket RA assembly Sprocket shaft Sprocket lock lever Sprocket wheel number Sprocket gear Direction for inserting paper guide roller Parts used for sprocket LA and sprocket RA are the same but the direction attaching the sprocket lever and paper holding cover is different 2 Print Head Unit 2 1 Disassembly 1 Pull the head cable from the head connector When inserting or pulling out the head cable hold the place marked with arrows gt and move the head cable horizontally in the direction of the arrow while pushing the head connector Print head unit 94VF401100000 Head cable Head cable Head connector X 9 Head lock lever SS 94VF 303005010 Head connector WS 94VA260112001 2 Turn the head lock lever clockwise 3 Remove the print head unit 2 2 Assembly 1 Set the print head unit on the carriage 2 Insert the head cable into the head connector 27 3 Paper Sensor 3 1 Disassembly 1 Remove the soldered lead wire from the termi
33. 9102PAZZ 741514 IC6 RHHiX0272PAZZ 062003 TR Array 4 0134 22 55 IC8 4 0104 22 SN74LS42N IC9 4 0078 22 SN74LS32N 1 10 RH iX0086PAZZ SN75189N RH iX0123PAZZ SN74LS244N 1 12 4 0249 22 TMP8155P RH iX0294PAZZ TMP8085A CPU cgo RHHXOZSOPAZZ SN7ALS273N 1 16 CG ROM amp Data Control 1 17 RH iX0296PAZZ SN74LS374N 1C18 RH iX0074PAZZ SN74LSOAN IC19 RHiX0293PAZZ 4 1 21 RH iXO24BPAZZ 6 CPU C22 DPROMOO26PAZZ amp 1 21 Control ROM IC 16 may not be come with unit It s depending on destination and Host computer Parts code when ROM was installed on CPU board 2 808 DPROMOO48PAZZ BP MZ 80A 0047 22 REF DESCRIPTION CODE Q20 REF PART NO DESCRIPTION NO e Model name for ROM when ROM is optional 2 8 MZ 8KP5R MZ 8AP5R TRANSISTORS Q1 VS2SD986 1 250986 016 017 5258772 1 258772 019 OR VS2SB743 1 Q21 VS2SA1015 1 25 1015 DIODES Di RH DX8402YAZZ 5277 D22 O23 D24 151555 1 151555 026 025 VHD1S953 1 15953 ZD1 1 VHD 1224 1 1224 Zener 205 206 052487 1 0524 7 Zener ZD7 VHDOSZ5R6Y 1 0525 6L Y Zener RESISTORS R1 H2 R3 R6 R7 R4 VRW KV3HD121J 120 ohm 5W VRD RU2EE122J 1 2K ohm W V RS PU3DB821J 820 ohm 2
34. 94V F303008000 107 94V F303007020 108 94VF303009010 109 94VA170202501 110 94V F303029000 111 94V F303030000 112 94VF303014010 113 94V F30301 7000 114 94VB210151490 115 94VF303018010 116 94VF303018020 Frame LA Frame RA Timing Belt Motor Assy Motor Heat Sinker Paper Feeding Motor Assy Paper Senser Lever Paper Senser Lever Spring Senser Board Reed Switch PTS Sensor Board Assy Home Position Sensor Assy Timing Belt Belt Driving Pulley Ball Bearing Belt Driven Pulley Belt Driven Flange AA AA AA AB AB AA BF AG AZ BA BV AR BU AN AE AK AK BD BE BB AH AY AH AE REF NO 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 75 PART 94VF303019000 94V F303004000 94V F303006000 94VF303005010 94V F303005020 94VF303001010 94VF303001020 94VF303001030 94V F303001050 94V F 303001060 94VF303001070 94V F303001092 94VF303001100 94VF401100000 94VF303007010 94V F303001040 94VF303011010 94VF 303011020 94VF30301 1030 94VF30301 1060 94VF30301 1040 94VF303011050 94VF303013010 94VF303013020 94 601302050 94 101251490 94 130103216 94VF303010010 94V F303010020 94VF303001080 94VF303021001 94VF 303020000 94VF303020020 94VB101252190 94V F303014020 94VF303352010 94VF3033
35. CRIPTION CODE NO NO CPU BOARD UNIT SECTION R21 5 DPWB O215PAZZ Assembled CPU Board Unit 23 VRD SC2EF102J Not replacement item R28 R30 INTEGRATED CIRCUITS 5 R33 iei R35 IC3 R8 RH iX0141PAZZ SN74LS125N AG R17 VRD SC2EF151J 150 ohm 1 4W AA 19 2 RH iX0086PAZZ SN75189N AN R20 0102 22 5 741 514 em VRD SC2EF153J 15K ohm 1 4W AA RH iX0074PAZZ SN74LSOAN AE E VRD SC2EF472J 4 7K ohm 1 4W AA 21 IC8 R12 1 9 RH iXO250PAZZ SN74LS273N AQ R15 VRD SC2EF222J 2 2K ohm 1 4W AA IC10 R18 1211 RH iX0136PAZZ 8255AC BA ib VRD SC2EF272J 2 7K ohm 1 4W AA RH iX0071PAZZ SN74LSO2N AE Boi 14 VRD SC2EF221J 220 ohm 1 4 AA 1 RH iX0226PAZZ RAM2114L 1 AY R26 16 RHiXOO79PAZZ SN74LS74N AB AR IC17 RH iXOO75PAZZ 5 741508 AR 19 RH iX0076PAZZ 5 741510 HOP 1C20 RH iX0127PAZZ SN74LS107 AG 22 DPROMOOO08PAZZ ROM 2732 BP CAPACITORS C23 RH iX0146PAZZ 8253AC BC br 1C24 0104 22 SN74LS42N AH VCKZPR1HF222P 2 200 50V Ceramic AA IC25 DPROMOO09PAZZ ROM TMM2732 BP Km 26 RH iX0228PAZZ CPU Z80A BG VCKZPRIHF103P 0 01MFD 50V Ceramic AA incid E AE C4 VCEAAU1CW476Y 47MFD 16V Aluminum AB TRANSISTORS AND DIODES VCEAAUIHW105R 1 MED 50 Aluminum 26 Q2 VS2SC1815 1 25 181
36. F 303027000 Timing Belt Motor Assy BV 154 104 94VF 303026010 Motor Heat Sinker AR 155 105 94VF303031000 Paper Feeding Motor Assy BU 156 94VF310011000 Paper Sensor Lever AQ 157 107 94V F 303007020 Paper Senser Lever Spring AE 158 108 94 303009010 Senser Board 159 109 94VA170202502 Reed Switch AK 160 110 94V F303029000 PTS Sensor Board Assy 161 111 94V F303030000 Home Position Sensor Assy BE 162 112 94V F303014010 Timing Belt BB 163 113 94V F303017000 Belt Driving Pulley AH 164 114 94VB210151490 Ball Bearing AY 165 12 PART NO 94VF303018010 94V F 303018020 94V F303019000 94V F 303004000 94V F303006000 94V F303005010 94V F303005020 94VF303001010 94V F303001020 94V F 303001030 94V F303001050 94VF303001060 94V F303001070 94V F303001092 94V F303001100 94V F401 100000 94V F303007011 94V F303001040 94V F303036010 94VF 303011020 94VF 303036020 94V F 303011060 94V F30301 1040 94V F30301 1050 94VF 303013010 94VF 303013020 94V F 304004020 94 8101251490 94 130103216 94VF303010010 94VF303010020 94V F303001080 94VF303021001 94V F303020000 94V F303020020 94VB101252190 94V F303014020 94VF303352010 94V F 303352030 94VF 303352040 94V F303352050 94V F303352060 94V F303352070 94V F303352080 94V F303352090 94VA2601 12001 94V F 303025000 94VF303037010 94V F 303037020 94V F310009020 94VF303023010 MODEL MZ 80P5 PARTS LIST DESCRIPTION Belt Driven Pulley Belt Driven Pulley Flange Belt Tensi
37. PRINT HEAD Of CARTRIDGE RIBBON 1 EXCHANGE 2 2 2 4 5 Er REPAIR PROCEDURE FOR PRINTER MECHANISM Flow Chart to Check Cause of Defective Phenomenon 1 Mechanism does not function Is it connected NO Connect Does the to the system as the connector T mechanism function Is there Put in the A printing paper printing paper To check of power and control circuits Phenomenon 2 Carriage does not move Is it connected Connect the Does the to the system connector carriage move Does the timin Is the timing belt LAM g belt 9 according to motor revolve motor wired 5 section 6 Does the carriage move 15 26V supplied to To check parts _ Insert the 4 connected with power p timing belt in when you move the timing rA belt by hand 15 aci ab R supply the carriage Only timing belt moves Adjust as in the timing belt tension normal Timing belt also doesn t move section 7 2 Try to move the carriage To Repair 1 manually Is HP signal outputted 4 Try to move the carriage t Repair 1 Is PTS signal outputted manually Replace as Belt driving pulley section 6 2 16 there friction between belt driving pulley and belt driven pulley Belt driven pulley Replace as in section 8 2 Is the timing belt To check of things motor driving signal related with control normal 2 Timing belt motor Replace as D
38. RTRNPOOA8PAZZ Power Supply Arp BB 27 LSTYPOO01PAZZ Pos gat 220V cL 28 DGiD 0005PAZZ 101 RTRNPOOSGPAZZ Power Supply Transformer 29 PGiDPOO01PAZZ Mea ap for240V gt 4 0052 22 A E101 7 22 Power Supply Transformer 30 1 22 E 5 7777 Uv Hor 110V 53 Spese e 31 PKYU 0001PAZZ A L101 RTRNZOOOSPAZZ Line Coil n kf AL 32 20079 22 A F101 ts 37 PZETVOO19PAZZ A jF102 QFS COD0SPAZZ Fine TIA for 220 1240 AE 58 MSPRPOOBOPAZZ n os nme e TIME Ps 20022 22 10 is A F104 4 Perea Meza tor for 220 240V 22 A 101 y NT 9 Sey A F103 QFS C2002TAZZ Fuse T2A tor 110V QACCKOOSOAFZZ EN ie 5 Fi QACCBOOOIPAZZ 44 05 QFS COO05PAZZ Fuse TIA wn MOV QACCLOOOIPAZZ A 6101 405 22 Switch Pe QACCUOO001PAZZ A 80101 2 5 22 1 Appliance Inlet E TLABHOO02PAZZ DSOCNOIS9PAZZ Lead Wire with 5 pin Socket AG gee B 4 PRDAROO3APAZZ Radiator AW 94VE RC 04 1 5 0001 22 Fuse Holder AA 5 LANGKO325PAZZ Switch Fixing Metal AE 94VER 04 1 6 043 22 Sub Radiator AG 7 PSPANOOO5VAZZ PWB Fixing Spacer AA 5 0046 22 8 QLUGPOOOS5PAZZ Appliance Inlet Joint Pin AA
39. SHARP SERVICE MANUAL Printing paper Character printing Bit image printing Paging Tabulation Feed Copies Alarm bell Bi directional printing Printing ribbon MZ 80P5 PDSM281007 MZ Dot Printer MODEL 7 80 5 pe IN THIS MODEL THE CHAE CUNE ATOE CP 15 C22 MAY NOT BE THE Ob KS 1010 IN mk Laver PS PETERS wi THe PG PRINTER FEATURES Can use fanfold paper 4 10 inches wide Four character sizes are possible Printing is possible with dot units Number of lines printed on 1 page can be determined Both vertical and horizontal tabulation control is possible Switch for line by line paper feed and paper feed in page units Control is also possible through software Simultaneous copies up to 3 pages in cluding the original are possible Alarm bell sounds to warn the user of mechanical trouble lack of printing paper etc Along with bi directional printing there is very effective printing thanks to the use of logical seeking Only 80 characters line 40 characters line It can be easily put in and taken out because a special cartridge ribbon is used SHARP CORPORATION Contents yw et aae Io a EAE OR ak Ma Sp eee Precautions servicing 5 or Re m9 BR LN EU RTAEESSA OR KR OSE OES Explanation MERE Seu Troubleshooting CPU b
40. V PRECAUTIONS BEFORE SERVICING The printer mechanism is fixed to the chassis with two screws to keep it from being damaged by vibration etc during transport Remove these screws when using main taining or repairing the printer Fix the mechanism again with these screws when transporting the printer aste Dna 22 Remove the fastening screws Na Do not apply external force to the print head such as by touching it when it is operating The print head becomes very hot so do not touch it with your hand until it cools down sufficiently Do not turn the paper feeding knob manual feed knob when the power is on or you will damage the paper feeding mechanism Do not print when the ink ribbon is loose When servicing and checking a printer that has been used for a long time remove dirt fuzz and dust from the inside and oil the mechanism Vf There are two types of oil G2 and O2 Use the proper oil for each oil point Refer to page 39 40 for oil points There are screws and nuts which are fixed and then locked with paint for vibration Proof etc during transport Paint the screws to lock them after disassembling and replacing new parts Refer to page 39 40 for the points to be painted to lock the screws E MZ 80P5 NAMES OF PARTS AND EXPLANATION OF FUNCTIONS Names of parts Assistant guide Cover Ass y Manual feed knob Cabinet A Cont
41. W VRD RU2bEE332J 3 3K ohm W VRO RU2EE472J 4 7K ohm R12 VRD ST2HF102J 1K ohm CODE AF AE AC AB AA EM 1 REF NO R13 R19 R29 R30 R45 R14 R18 R15 R17 R32 R33 R35 R36 R16 R28 R21 4 R22 R31 840 R42 N R44 R46 R47 R23 R24 R43 R25 R37 R38 R26 R41 RAZ VRI 1 C6 C7 8 010 N C13 C30 C2 C4 C20 C21 c5 C19 C32 C9 C14 C15 C16 C17 C18 C22 C23 C24 25 C31 Nemec Nee ee Nese Se nnd MODEL MZ 80P5 PARTS LIST PART NO VRD RU2EE151J VRD RU2EE222J VRD RU2EE103J VRD RU2EE101J VRD RU2EE102J VRD RU2EE102J VRD RU2EE471J VRD RU2EE153J VRS PU3DB681J VRD RU2EE150J RR KZ0071PAZ2Z RR KZ0038PAZZ RR KZ0037PAZZ RVR MOO38PAZZ CAPACITORS VCTYPU1BD104Z VCKZPR1HF103P VCKZPR1HF102Z VCEAAU1CW476Y VCSACU1VE105K VCCCPU1H3220J VCEAAU1CW106Y VCQOYKU1HM104K VCCCPU1H3100D VCEAAUTHWT150Y DESCRIPTION 150 ohm 2 2K ohm YW 10K ohm AW 100 ohm YW 1K ohm AW 1K ohm W 470 ohm 15K ohm W 680 ohm 2W 15 ohm AW Resistor Array 1 2K ohm 8 Resistor Array 3 3K ohm 8 Resistor Array 3 3K ohm x 7 Variable Resistor 22K ohm 0 1 MFD 12V Ceramic 0 01 MFD 50V Ceramic 1 000 PF 50V Ceramic 47 MFD 16V Aluminum 1 MFD 35V Tantalum 22PF 50V Ceramic
42. ZZ DBOXD0027PAZZ INTEGRATED CIRCUITS 101 102 RH iX0268PAZZ RH 1X0269PAZZ TRANSISTORS AND DIODES Q101 VS28SD833 1 0102 RH PX2001YAZZ BD101 VHDS2VB10 1 BD102 En VHDSAVB10 F 20101 VHEO5Z6R8Z 1A 20102 VHEEQBO126 1 RESISTORS 8101 VRD RU2EE102J 8102 VRD RU2EE561J CAPACITORS C101 UE pia RC CZ0180PAZZ C103 VCEAAU1HM108M C104 VCEAAQ1HC568Y C105 VCEAAU1CM688M C106 VCEAAU1VM338M C107 VCEAAU1VW336M C108 VCEAAU1AW107M C109 VCTYPU1ED104Z C110 VCEAAU1EM107M C111 20003 22 MISCELLANEOUS T101 RTRNPOO48PAZZ T101 RTRNPOOS6PAZZ L101 RTRNZOOOSPAZZ F101 F102 QFS COO05PAZZ F105 F103 QFS CO004PAZZ F104 QFS C2002TAZZ SW101 OSW COO03PAZZ 50101 OSOCAO003PAZ2Z 3 DSOCNO125PAZZ 4 4 27 5 001 22 647MED 250V O TMFD 25V Ceramic DESCRIPTION Buzzer Lead Wire with 7 Pin Socket LED Spacer Assembled Power Supply Unit Not replacement item Assembled Power Supply Unit Not replacement item for UK TA78015 15V Regulator Si3552 5V Regulator 2850833 617 Photo coupler 52810 Bridge Diode S4VB10 Bridge Diode 0526882 Zener Diode 1 26 Zener Diode 1K ohm 1 4W 560 ohm 1 4W Line Capacitor bg 1 000MFD 50V Aluminum 5 600MFD 50V Aluminum 6 800MFD 16V Aluminum B 300MFD 35V Aluminum 33MFD 35V Aluminum 100MFD 10V Aluminum 100MFD 25V Aluminum 0 1MFD 100V Film Power Supply Transformer 22
43. and platen correct Repair as adjusting lever in section 10 2 Replace print head unit Does light and dark printing disappear Phenomenon 14 Same dots only are usually sometimes omitted NO Head cable side 1 contact of head connector alright Replace print head unit Check head connector and 3210 cable A Terminal board side Is correct head driving signal outputted Check things related with control Replace print head unit Is dot wire bent Is driving coil inside head disconnected Measure resistance of driving coil 52 Replace as in section 2 To Repair 8 2 Phenomenon 15 The ribbon winds but becomes loose Does ribbon feed correctly Use paper within standards Is printing paper within standards clearance corrected by adjusting with adjusting lever Is clearance between tip of print head and platen correct Adjust it with adjusting lever Phenomenon 16 Go return time for the carriage varies Check Phenomenon 2 Does carriage move smoothly by hand Do phase of HP signal and PTS signal match m Practical Method of Repair Repair 1 PTS signal is bad HP signal is bad 1 Check points and method 1 Check 5V Standard 5V 5 2 Test whether LEDs are norma
44. and disassemble 1 Pull the sprocket shaft in the direction of the arrow and remove the sprocket bearing from frame RA 2 Lift the sprocket unit up and out Frame RA 94V F303003000 Sprocket bearing 94VC601302050 Sprocket shaft 94 03013010 Sprocket guide shaft 94V F303010010 Sprocket shaft 94VF303013010 Sprocket bearing 94V C601302050 Frame LA 94V F303002000 4 Disassemble the sprocket unit 1 Pull out sprocket LA assembly 2 Pull out the paper guide roller 3 Pull out sprocket RA assembly 4 Disassembly sprocket LA and RA assemblies Remove the sprocket lock lever sprocket wheel paper holding cover spring G pin and paper holding cover 5 Pull out the sprocket gear Spring pin Paper holding cover spring 94VF303011040 Sprocket lock lever G 94 303011050 94 03011060 Paper holding cover 94VF303011030 Paper holding cover spring 94V F303011040 G pin 94VF303011060 Sprocket lock lever Paper holding cover 94VF303011050 94VF 303011030 Sprocket frame 94VF 303011010 og Sprocket wheel 94VF303011020 Sprocket bearing 94 601302050 Sprocket gear 94VF 303013020 el 5 2 14 e 94VB130103216 e LS 6 0 15 11 P d 94VB101251490 1 2 Assembly 1 Assemble the sprocket unit in the reverse order used for disassembly Note the direction for inserting LS leaf spring SP 4 2x 14 Sprocket shaft 94VB13010321
45. aper feeding elis motor wired Is 26 supplied to Check parts related paper feeding motor with power supply Is paper feeding motor Check parts related driving signal normal with control Paper feeding motor Replace as in section 6 4 Check if there is a load the paper when it is in the paper box system case etc 2 Remove the paper and check if there is a clicking sound when the sensor lever approaches the reed switch 47 Phenomenon 6 Prints on the same line YES i i i Has paper out Put paper in Alright for atime but correctly soon prints on same line YES Are paper holes out Us sere oni ENON NO To Repair of sprocket pins load at the paper 4 4 feed in inlet NO YES Is there LF FF YES Check parts related paper feeding with control Lighten load To check Phenomemon 5 Phenomenon 7 Prints even without paper Attach paper sensor paper sensor attached Section 3 2 Lead wire soldering Is paper sensor lead wire wired 1 reed switch moved by paper sensor lever Check parts related with control 48 Phenomenon 8 Paper feed pitch is abnormal 8 abnormal YES Is oad on the paper itch feed in inlet E ie load MN sto Check Phenomenon 6 Phenomenon 9 Density of characters varies across line
46. ergy is thus weakening printed letters To the contrary the larger pulse width prolongs the printing time of head wire thereby feeding the head with the head wire clacking out In most cases the head wire is caught by the ink ribbon and what is worse the tip of head wire is broken This adjustment is required to give an appropriate printing energy to the head wire Make an adjustment in the following manner 1 2 3 4 5 6 7 Remove cabinet B Do not disconnect the connector of feed switch circuit Take out the head cord PWB connector from the connector of terminal PWB Be careful not to damage the head cord PWB Turn on the paper end sensor Put a piece of paper in the paper sensor lever located at printing paper insertion area Draw out the power supply socket 0504 with 5 pin lead from the CPU board Connect 3 units of D C power supply to the 5 pin connector N0504 of CPU board as shown below 24V D C current capacity 1 5A or more 15V D C and 5V D C While pushing the line feed switch of the set turn on the power switches of the three D C power supply units The head is shifted right and left Connect the synchroscope to the collector of the transistor Q19 25 1815 on the drive PWB to check to see if the pulse width on the synchroscope is 400410 usec If the width is out of standard value rotate the semi variable resistor at the drive PWB to adjust the width The semi variable resistor is to be
47. ever approaches the reed switch 45 Phenomenon 4 Ribbon does not feed YES Does carriage move To Phenomenon 2 Is ribbon fed 15 cartridge put in correctly Put cartridge in correctly Remove cartridge Does knob move with only the cartridge Does cartridge knob turn by hand Replace cartridge 15 ribbon fed when knob turns YES Does ribbon driving NO turn when cartridge is removed Does knob turn when ribbon moves Does knob turn only when cartridge moves from left to right Does knob turn only when cartridge moves from right to left 46 To Repair Phenomenon 5 Paper does not feed YES Connect the connector Is it connected to the system Does paper feed Alright for a time but paper feed ends soon Put in paper correctly Are paper holes out of sprocket pins Is there an abnormal To Repair load at the paper feed 4 in inlet NO YES K 2 1 paper sensor 1 functioning properly Te Phenomenan 7 Lighten load YES Is paper fed Check parts related after printing with control NO Is paper fed when Does motor heatup sprocket gear is when electric signal To Repair 5 tumed by hand is sent Does the paper feeding motor shaft gear also turn at the same time Is the p
48. he ribbon mask and head sitting plate 1 Adjust the adjusting lever to its uppermost step Adjust it all the way to the side marked 2 Adjust the relative position of the platen ribbon mask and print head tip as shown in the figure Check that the ribbon mask is at a right angle 6 about 0 65 m Platen A Print head unit a gt b Platen A 1 Within 0 of standard Ribbon mask Ribbon mask 3 Put the head sitting plate approximately parallel to the side surface of the carriage and in contact with the bearing In addition position it so it satisfies the conditions in 2 and fasten it with screws should be parallel Head sitting plate Should touch 11 Do not touch the home position sensor assembly and carriage sensor plate when setting the adjusting lever to the uppermost and lowermost steps f gt 0 g lt 0 Home position sensor assembly Sensor plate 88 Points for Oiling and Painting To lock screws 10 40 88 REPLACING INK RIBBON FROM CARTRIDGE 1 Remove the cartridge ribbon from the printer Cartridge ribbon 94VERC 04 1 Printer Fig 1 2 Remove the cartridge case lid from the cartridge case frame Note There are catches in 6 places When removing the lid push the catches to the outside so they aren t bent and remove the cartridge case lid Cartridge case lid
49. he timing belt is driven by the timing belt motor through the belt driving pulley and belt driving pulley Printing performs when the dot wire springs out toward the platen due to the flow of current in the head driving coil The current flows when the PTS signal is generated by the belt motor rotation Carriage drive signal i Am HP signal OE m 2 54mm 1 10 PTS signal 2 08ms Head drive coil signal cjbEem Dot wire tip 2 2 2 1 Principle of Carriage Movement The carriage is moved to the right and left by the drive of the timing belt motor with the timing belt inserted in the carriage gt Carriage Timing belt motor Junction Left Timing belt E o Drive for the timing belt motor is basically 2 2 phase excitation From right to left 2 Printing function of the Print Head This explanation is for the wire movement of one dot when one character is formed 1 The function plate is pulled in to the core when current flows in the driving coil and thus the dot wire springs toward the platen since it is connected with the function plate 2 The forced dot wire springs out till it strikes the platen and one dot is printed on the paper through the ribbon when it strikes the platen 3 The function plate is reset to its former position by the force of the function plate spring when current no longer passes through the driving coil The dot wire after it strikes the p
50. ine Feed Switch Button Assy Hinge Right Hinge Left Screw Knob with Spring Hinge R L Fixing Metal Stay for CPU Board Paper Guide Paper Guide Roller Braided Wire Cord Keeper Sound deadening Material Frame Ground Terminal A C Cord A C Cord for UK SESA Label for Cord for UK SESA Ink Ribbon with Cartridge Case Ink Ribbon Non Cartridge Case Instruction Manual English CARD UNIT SECTION 4 0077 22 4 0181 22 4 0141 27 RH iX0104PAZZ RH iX0074PAZZ RH iX0013PAZZ SN74LS30N SN74LS175N SN74LS125N SN74LS42N 5 741504 5 7416 CODE AE AC AG AA AA BF BK AU AQ AM AC AE AE AD AC AB AC AC AG BP AM AE AE AC AG AB AB AX AG AT AC AG AG AQ AQ AC BB AX AY AE AM AK AH AE AF MODEL 2 8 5 PARTS LIST REF NO PART NO RESISTORS R1 VRD RU2EE391J R12 R13 VRD ST2HF221J R24 R25 5 VRD RU2EE560J R34 CAPACITOR C1 _ VCEAAU1CW107Y C2 VCTYPU1BD104Z C10 C11 VCCCPR1H3101J C22 MISCELLANEOUS QPLGZOO086PAZZ LANGKO297PAZZ DESCRIPTION 390 ohm 1 4W 220 ohm 1 2W 56 ohm 1 4W 100MFD 16V Aluminum 0 1 12V Ceramic 100PF 50V Ceramic 25 Pin Terminal 25 Pin Terminal Fixing Metal PRINTER MECHANICAL UNIT SECTION 101 94VF303002000 102 94V F303003000 103 94V F303027000 104 94V F303026010 105 94VF303031000 106
51. l or not 5 52 PTS signal C m HP signal GND E RS To section 10 2 Adjust as in section 5 2 3 Check the waveform output by opening and intercepting the light shaft to the sensor plate HP sensor side PTS sensor side GND 2 Method of Repair 1 Check the parts related with the 5V power supply 2 If there is no continuity between a b exchange the PTS sensor board assembly 3 If there is no continuity between b c exchange the HP sensor board assembly Repair 2 Timing belt does not move 1 Check points and method 1 Check the backlash of the gears on the belt driving pulley and timing belt motor shaft 2 Check meshing of gears between belt driven pulley planetary pinion and ribbon driving gear 2 Method of Repair 1 Adjust the backlash Refer to page 32 2 If damage or wear to the gears etc found replace the parts and readjust Repair Ribbon driving gear does not turn 1 Check points and method 1 When ribbon driving gear does not turn by hand a Check meshing of gears of ribbon driven pulley planetary pinion and ribbon driving gear 2 When ribbon driving gear turns when carriage moves either left to right or right to left a Check meshing of planetary lever assembly and planetary pinion b Check the reversed revolution of the planetary lever 2 Method of repair 1 2 If damage or wear to the gear
52. lanetary pinion 1 gt Right Left Planetary pinion 3 gt Planetary pinion 4 gt Ribbon driving gear In direction of arrow c The ink ribbon is stored endlessly in the cartridge case This ink ribbon pinched between the ribbon feeding knob and ribbon pressure roller is wound up by the ribbon feeding knob set on the ribbon driving gear Furthermore there is a ribbon braking spring at the outlet of the cartridge case to prevent the ribbon from becoming loose as itis wound A ribbon mask is attached to prevent the paper from becoming dirty 98 Ribbon feeding knob Ribbon mask Ribbon pressure roller Ribbon planetary gear 1 Ribbon braking spring Ribbon planetary gear 2 Ribbon driving gear Ribbon planetary Ribbon planetary gear 4 gear 3 Connector Diagram Connector terminal No Connection R T sensor GND Paper sensor Paper sensor Timing signal Reset signal CR motor A phase y 1 Print solenoid Common line UD PF motor phase VLED 5V CR motor common line PF motor common line Note Print solenoids are counted 1 2 9 from the upper side of the characters REPLACING OF MAIN PRINTER PARTS 1 Sprocket Unit 1 1 Disassembly 1 Remove fastener for sprocket guide shaft 4N x 2 4W x 2 2 Remove sprocket bearing from frame LA side of the sprocket shaft E ring 3 Remove the sprocket unit
53. laten returnes to its position which is connected with function plate by its striking force and the wire return spring and maintains itself in a waiting condition Dot wire Ribbon mask Platen Wire return spring Nose tip Ribbon Function plate Function plate spring 9 Paper Feeding Mechanism The paper feeding mechanism has ordinary feed fast feed Paper is fed by the sprocket shaft using the sprocket transmission gear driven by the paper feeding motor and the sprocket driving gear Paper is fed by pulling the paper up with the sprocket pins The drive method for the paper feeding motor is the same as the carriage motor moves the carriage from right to left The printing position on the paper can be adjusted with a knob but the adjustable minimum width is about 0 5mm because of the resolution precision of the pulse motor Sprocket drive gear Sprocket transmission gear Paper feeding motor Ribbon Feeding Mechanism The ribbon mechanism consists of the cartridge ribbon and ribbon feeding mechanism The ribbon feeding me chanism is attached to the belt tension plate assembly Movement of the timing belt to the right and left is through the following arrangement of wheels The ribbon driving gear normally turns counterclockwise Left gt Right Belt driven pulley Planetary pinion 1 gt In direction of arrow Planetary pinion 2 Ribbon driving gear Belt driven pulley P
54. led Power Supply Unit Not replaceable item for 110V INTEGRATED CIRCUITS 1 101 1 102 RH iX0268PAZZ 4 0269 22 TA78015 15V Regulator Si3552 5V Regulator TRANSISTORS AND DIODES Q101 Q102 5250833 1 RH PX2001YAZZ 250833 617 Photo coupler AD AH AG AA AK AV AL AK VENT Rente EVIE V WAR 8 4 May be handled by under the optional item DESCRIPTION Foot Specification Panel for 220V Specification Panel for MZ BOP5B SEEG SESA Specification Panel for MZ BOP5A SEEG SESA Specification Panel for 240V Breaification Panel for 110V Badge SHARP Badge Rubber A Rubber Rubber C Connector Cover Signa Cable Top of Form Line Feed Switch Button Assy Hinge Right Hinge Left Screw Knob with Spring Hinge R L Fixing Metal Stay for CPU Board Paper Guide Paper Guide Roller Braided Wire Cord keeper Sound deadening Material Frame Ground Terminal Insulating Sheet Spring Tip with Lead Wire CPU FG Terminal PROTECTOR FOR PAPER SENSOR A C Cord for SEEG Cord for UK SESA A C Cord for SCA Cord for TAIWAN Label for A C Cord for UK SESA Ink Ribbon with Cartridge Case Ink Ribbon Non Cartridge Case Instruction Manual English Instruction Manual for complement English 1 O CARD
55. nal board 2 Stretch the bend in the outer paper guide In the direction of the arrow 3 Remove the paper sensor lever spring 4 Remove the paper sensor board assembly 5 Remove the soldering of the reed switch Sensor board assembly 2 94VF 303009000 _Outer paper guide 94VF 303007010 Paper sensor lever spring 94VF 303007020 3 2 Assembly 1 Assemble in the reverse order used for disassembly 4 PTS Sensor 4 1 Disassembly 1 Remove the soldered lead wire from the PTS sensor board 2 Remove the PTS sensor board assembly 2 bmm screw x 1 PTS sensor board assembly 94VF 303029000 28 4 2 Assembly and Adjustment 1 Temporarily fasten the PTS board assembly 2 Solder the lead wire 3 Adjust the period of the PTS signal 1 Check T period while printing Check the wave form with a synchroscope Check that the print head has been fitted 1 95 2 3ms 2 Adjust the PTS sensor board in the direction shown by the arrow in the figure so that the going and return T periods are almost equal 3 After adjusting fix the screw lock and paint the screw to lock it 5 HP Sensor 5 1 Disassembly 1 Remove the soldered lead wire of the HP sensor board from the terminal board Do not touch the timing belt the soldering iron 2 Remove the HP sensor board assembly 2 5mm screw E ring HP sensor board assembly 94V F303030000 5 2 Assembly and Adjustment 1 Attach the HP sensor
56. nsion assembly and remove the timing belt 2 5mm screw 5 Pull out the belt tension plate assembly and ribbon driving gear Ribbon driving gear 94VF303014020 55 Belt tension plate assembly Home position sensor assembly 94VF303030000 6 1 2 3 4 5 6 9 Platen 1 2 3 4 Disassemble the belt tension plate assembly 1 Remove the belt driven pulley flange E ring RD 2 Pull out the belt driven pulley D 3 Pull out the planetary lever assembly alt driven pulley flange 4 Remove the planetary pinion E ring x 3 03018021 8020 Ball bearing 94VB210151490 Belt driven pulley 94V F303018010 Planetary lever assembly 94VF303020000 M LS 3 0 07 6 LS 3 0 07 6 94 101252190 SIE ads 2 8 2 Assembly and Adjustment Assemble the belt tension plate assembly 1 Put in the planetary pinion E ring x 3 Do not make a mistake about the direction and position of LS leaf spring 2 Put in the planetary lever assembly 3 Put in the belt driven pulley 4 Put in the belt driven pulley flange LS 3 0 07 6 Planetary pinion Put in the ribbon driving gear and ribbon tension plate and attach the timing belt Temporarily fasten with 2 5mm screw Attach the home position sensor assembly E ring Assemble carriage shaft A in the reverse order used for disassembly Adjust the belt tension properly Refer to section 7 2
57. nsor is attached to determine the Home Position of the carriage and generates the reference signal for printing The PTS sensor generates the timing signal used to determine printing position It detects this signal and adjusts carriage speed The PE sensor detects the presence or absence of paper 1 HP Sensor Home Position Sensor The HP sensor consists of the home position sensor assembly and sensor board on the lower part of the carriage The signal is High when the sensor board interrupts the light shaft of the photo coupler It is an open collector output Sie PTS Sensor Print Timing Signal Sensor The PTS sensor consists of the PTS sensor board assembly and the sensor board on the timing belt motor shaft The signal is Low when the slit of the sensor board appears It is an open collector output Paper Sensor The paper sensor consists of the reed switch attached to paper sensor board and the permanent magnet attached to the paper sensor lever The permanent magnet approaches the reed switch and the signal passes when there is no paper Sensor Circuit 5V HP signal Paper sensor Reed switch gt PTS signal Permanent magnet To GND Printing Mechanism The main elements of the printing mechanism are print head unit carriage timing belt timing belt motor and platen The print head unit on the carriage is moved to the right and left by the timing belt on shafts A and B of the carriage guide T
58. oard 8 drive PWB Adjustment of head driving coil energizing pulse width ad we een eee og San te Sa hehe Semmes Oe RPM Power SUBDIN ro anre ane CORR res eR OK RES AeA i RR o Oe ar OF pinter pante uu ise ees v Se eee eee BUS ORD eee EE Haplscing of main printer Paris so esum a Rx somno OUR HAC EAT sew d Replacing ink ribbon from cartridge E WR RETREAT Repair procedure for printer mechanism Circuit diagram and printed wiring board BUE A esac VIEWS Aou iu acd Xe ere UR ree Re To P b re RC ORCI OR eR e RR methot MC Drm a RRS Aw WE Replacement ated ET CR RC RU LX General Printing method Impact dot matrix Printing paper Fanfold paper 4 10 inch wide Feed methos Variable sprocket feed Copies Max of 3 copies including original Kinds of characters 230 kinds 95 ASCII characters 95 reverse characters of the 95 Printing paper ASCII character 40 other thickness Within 0 3mm characters Ink ribbon Special cartridge ribbon Character make up 8 H x 9 W dot matrix normal size character Head life Approx 50 million characters 14 dot character printing Line to line space 1 6 inch o
59. oes it move when Only timing belt moves removing the cartridge in section 6 2 ribbon Timing belt also doesn t move To Repair Replace cartridge 2 ribbon Note Active the paper to print even if there is no need to print while checking Phenomenon Does not print at all YES Does it print Connect the connector Is it connected to the system check parts connected with control Is printing command output Put in printing paper Is there printing paper Does paper sensor function normally To Phenomenon 7 Replace as in section 2 2 Replace print head unit Does carriage move To Phenomenon 2 1 print head unit connector connected Does it make any Is 26V supplied function noise to print head To check the parts related with power supply To check of things connected with control Connect the connector Is print head driving waveform normal Move the adjusting lever to the lowest step Does it print by merely adjusting the adjusting lever 15 printing done NO copy paper Repair as in section 10 2 Put the cartridge ribbon in correctly Is the cartridge ribbon put in correctly Remove the paper and check if there is a clicking sound when the sensor l
60. on Plate Platen A Carriage Assy A Head Lock Lever Head Lock Lever Spring Carriage Shaft A Carriage Shaft B Adjusting Lever Scale Scale Spring L Scale Spring R Ribbon lt Head Sitting Plate Print Head Unit Outer Paper Guide Inner Paper Guide Sprocket Frame L Sprocket Wheel Papet Holding Cover L T G Pin Paper Holding Cover Spring Sprocket Lock Lever Sprocket Shaft Sprocket Gear Plane Bearing Leaf Spring 6 0 15 11 Spring Pin 2 14 Sprocket Guide Shaft Paper Guide Roller Sprocket Transmission Gear Paper Guide Plate Planetary Lever Assy Planetary Pinion Leaf Spring 3 0 07 6 Ribbon Driving Gear Cartridge Case Lid Ribbon Feeding Knob Ribbon Pressure Roller Ribbon Separator A Ribbon Separator B Ribbon Feeding Spring Ribbon Braking Spring Ribbon Label Head Connector 3210 Cable A Sprocket Frame Paper Holding Cover R Paper Senser Lever Shaft Edge Cover CODE AH AE AT BK AZ AK AC BD BK AN AX AF AF AL AH BU BA AY AX AR AQ AC AD AL BF AK AK AB AB AQ AT AK AZ AN AG AC AN AX AK AK AK AK AE AE AH AP BL AX AQ AD AC amp DT EMBLED VE EI AR Se pie 2037 BP 1 2 PENT E MS te ira SOU 1487 ime pri c t PESE LN en S ae fest 5 IAE I UPS eb hs 13 ERE Se cd oen 10 15 CNTR c SOC aie
61. print head unit Refer to section 2 1 on page 27 3 Insert a screwdriver or similar tool into the hole in carriage shaft B to stop it from turning and remove the nuts holdingit 4 N 4 Remove the ribbon mask and head sitting plate 2 5mm screw x 2 Ribbon mask lever Adiusting leve 94VF303001092 94V F303001030 Screwdriver Head sitting plate 94VF303001100 10 2 Assembly and Adjustment 1 Temporarily fasten the adjusting lever 4N Set it in the middle step of the adjusting hole 2 Attach the print head unit to the carriage There is no need to insert the head cable into the head connector 3 Turn carriage shaft B so the hole is up It is eccentric so pay attention to the top and bottom of the eccentric part Screwdriver Carriage shaft B 4 Move the carriage to the 1 side on the scale graduation 5 Insert a narrow screwdriver or similar tool into the carriage shaft B hole and adjust the clearance be tween the dot head tip and platen by moving it forward and back Standard clearance 0 65mm Position the carriage shaft where the platen and platen head tip lightly touch both sides of a thickness gauge Fix the adjusting lever Tighten it so the clearance does not change 7 Remove the print head unit 8 Temporarily fasten the head sitting plate and ribbon mask 2 5mm screw x 2 9 Attach the print head unit Insert the head cable into the connector 10 Fasten t
62. prior notice OPTION NREG ADR 1 16 06 2 lt p OPTION 2 RS 823 24 2 UN if a 2 553 5 552 ao ooN 3 HTHH H H s 95 4 M 2 6 lt lt PAI 5 4 8255AC Md s PAs TS PRINT B PAs 5 12 38 PAe 37 23 8125 18 28 18 18 LE E EIE 13 ca Ca ie ae ee fe i2 dr ees ein x Go EET Dp T ay 39 Rear 10 raat x p Dp ee 18 i BT eee 19 ses ae n 20 ins 21 3e 22 PBs 2 23 PBs 615 4 PBe 35 OPTION CONNECTOR T S 58 10 11 D E F G CPU Board Circuits 2 1802 Ros 25 CONECTOR 0 CONECTOR GND 1325 805 Roe Ino STATUS PB2 PBs P84 Ps 34 pin connector 16 2 Q n id 201 luotpi HOLDS E e a 8 P cnm MR Dt 9 ATCP BUZZER Re 7 Pr LSTACLA 28 0 5 34 connector 55CLR R5 al PIN I Q O PIN
63. r determined by pro gram Standard interface 8 bit parallel interface special for Sharp personal computer No of digits 80 digits 40 digits 136 digits 68 MZ 80B digits or determined by software Power supply 220V 10 50Hz AC 240V 10 50Hz for UK Page 66 lines page line space mode Power consumption 75W or determined by program Working temperature 5 to 35 C Printing speed 80 cps characters per second ordinary size characters Storage temperature 20 to 50 C Printing direction Bi direction with logical seeking External dimensions Approx for normal size character printing 377 W x 318 D x 105 H mm 80 characters line and its double size character printing 40 charac Weight Approx 6 4 kg ters line For bit image printing and other printing uni direction left to right CPU Board Section a Driver PWB Section Ce MN 2 80 Timer IC NE555 ROM Program TMM 2732 4K Bytes Head driver TR 250986 x 9 Character TMM 2732 4K Bytes Step motor TR 2SD986 x 8 RAM TMM 314APL 1 2114L 1 1K Bytes 8255 Counter 8253AC Other IC s Others Diodes transistors Power Supply Unit ouis NOTE Specifications and appearance are subject Specifications to change without prior notice for im rovement such a case th lana loput AC 220V 470 Sure Mis may be a little 240V 10 50Hz for UK the product Output DC 26V 21 5 to 26 5V DC 15V DC 5
64. rol panel Power switch Signal terminal 1 O PORT FG Frame ground terminal Drive PWB unit CPU board unit Power supply unit Printer mechanical unit Switch PWB unit m Printer Control Flow e Print Character Transfer Flow START RDA signal input YES Character code transferred RDP signal made High DA signal input RDA signal i YES When the printer receives RDP signal made the character code it raises low the signal to a high level RETURN Status Check Flow 1BH code transferred Print character transfer routine i as Print character transfer routine RDA signal input RETURN e Explanation of Signal The printer outputs this signal under the following conditions Negative logic 1 When the power is ON 2 When the printer is READY Outputs from the controller to the printer Positive logic Data RD1 RD8 strobe Responds in the following conditions according to STATUS demands from the controller Negative logic 1 PAPER EMPTY 1BH 03H 2 Printer machanical trouble 1BH 04H CPU Board Block Diagram 10545 Jazzng pue 103e21pu4 AAS 1043409 AMEN Jolom Buiddois pue HNO 109128 yae 199196 diyo LQH vau SOLVLS N3419 NID 18
65. s etc are found replace the parts and readjust Repair 4 Paper feeding path is normal but paper does not feed 1 Check Points and Method 1 Check if the right and left positions of the sprocket wheel are fixed correctly 2 Check if the paper holding cover is holding the paper correctly b4 Repair 5 Repair 6 Repair 7 3 Check if the paper holding cover spring is damaged or fallen off 4 Check if the sprocket lock lever is securely locked 2 Method of repair 1 Correct sprocket wheel positions Refer to section 27 2 3 4 Replace the parts if transformation wear etc are found in any parts Paper feed motor gets hot and paper does not feed 1 Check Points and Method 1 Check the backlash of the gear on the paper feeding motor and the sprocket transmission gear Refer to section 32 2 Method of repair 1 damage or wear to the gears etc are found replace the parts and readjust Scale does not hold paper correctly 1 Check Points and Method 1 Check if scale springs L and R are off and if there is wear etc 2 Method of repair 1 If damage etc to scale spring L and R is found change them Paper guide plate A is bad 1 Check Points and Method 1 Check if paper guide plate A is twisted and if there is a space between it and the platen 2 Method of repair 1 If paper guide plate A is deformed or if there is a space between the platen and it change paper guide plate

SHARP SERVICE MANUAL - The Sharp MZ

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