LMD-1420/1410 Service Manual
Contents
1. 7 682 961 01 s 7 685 104 19 LMD 1420 1410 Description L ASSY L ASSY STAND ASSY DC 40 FAN DC 35 OUNTED CIRC D 142 Fn o E CIRC CIRC D 141 RC D 142 RC D 141 D CIRC D 142 CIRC CIRC VU ES Q e EE IDIOTI REAP Se b EO bd EO ee c a C3 OUNTED CIRC PANEL LCD SPEAKER COVER REAR BUTTON AC S PLATE PROTE CUSHION for CUSHION for HOLDER A B 2X DND M B3X14 PWH 3 PWH 4 SCRE SCRE SCRE SCRE SCRE t SCRE JE PSW 3 for LMD 1410 for LMD 1420 SQUARE SQUARE UIT BOARD X 0 T BOARD T BOARD mca T BOARD H BOARD Q T BOARD 0 T BOARD BA T BOARD S ceicecdocdoc occ UIT BOARD GA TCH CTION for LMD 1420 LMD 1420 LMD 1420 PLUG 4 3X8 X6 EP FE ZNBK CM2 X14 EP FE ZNBK CM2 X12 EP FE ZNBK CM2 SCRE SCRE e PSW 4 PTP2X xs X8 6 EP FE ZNBK CM2 Overall Block 4 3 4 3 Electrical Parts List 1 LMD 1410 2 LMD 1420 Ref No or Q ty Part No pc 2 1 789 212 pc 2 1 789 213 1 1 789 229 pc 789 214 pc 2 1 789 215 1 1 789 228 pc 789 263 pc 789 265 pc 789 266 4 4 o oo TED2. V33_KEYPAD V33_KEYPAD J10 12V FAN1 FANSPIN1 1 12V_ FAN1 FANSPIN1_2 Frame Wiring LMD 1420 1410 SAFETY CHECK OUT After correcting the original service problem perform the following safety checks before releasing the set to the customer Check the metal trim metallized knobs screws and all other exposed metal parts for AC leakage Check leakage as described below LEAKAGE TEST The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis must not exceed 0 5 mA Leakage current can be measured by any one of three methods 1 A commercial leakage tester such as the Simpson 229 or RCA WT 540A Follow the manufacturers instructions to use these instruments 2 A battery operated AC milliammeter The Data Precision 245 digital multimeter is suitable for this job 3 Measuring the voltage drop across a resistor by means of a VOM or battery operated AC voltmeter The limit indication is 0 75 V so analog meters must have an accurate low voltage scale The Simpson 250 and Sanwa SH 63Trd are examples of a passive VOM that is suitable Nearly all battery operated digital multimeters that have a 2 V AC range are suitable See Fig A To Exposed Metal Parts on Set 4 1 AC 0 15 uF 1 5 kQ voltmeter 0 75V be Earth Ground Fig
3. A Using an AC voltmeter to check AC leakage LMD 1420 SY Printed in Japan LMD 1410 SY E Sony Corporation 2005 3 22 9 968 137 01 B amp P Company 2005
4. E Replace the BA board Replace the GA board 3 4 LMD 1420 1410 4 1 1 Section 4 Spare Parts Notes on Repair Parts Safety Related Components Warning Components marked are critical to safe operation Therefore specified parts should be used in the case of replacement Standardization of Parts Some repair parts supplied by Sony differ from those used for the unit These are because of parts common ality and improvement Parts list has the present standardized repair parts Stock of Parts Parts marked with o at SP Supply Code column of the spare parts list may not be stocked Therefore the delivery date will be delayed Harness Harnesses with no part number are not registered as spare parts In need of repair get components shown in the list and repair using them LMD 1420 1410 4 1 Overall Block 4 2 Exploded Views PWH4 x 14 PWH4 x 14 PWH4 x 14 4 2 LMD 1420 1410 No Part No 1 X 2050 919 X 2050 920 X 2055 900 787 341 A 1 787 342 189 212 Cn bs W FA gt 189 214 189 228 189 215 8 189 229 189 213 189 263 189 265 o 189 266 A 1 805 847 826 107 2 582 179 0 2 590 965 0 Cn Co 2 592 582 0 2 592 583 0 2 592 583 1 2 990 241 02 o Co de 7 621 772 70 7 681 000 61 7 682 551 09 7 682 903 19 7 682 904 49 7 682 950 09 SP
5. ED ED ED ED ED ED ED C C C C C C C SP Description RC RC RC RC RC RC RC RC RC T BOARD T BOARD T BOARD T BOARD T BOARD T BOARD BOARD T BOARD BOARD D EH HH CC Gs GA 4 4 Packing Materials 8 Supplied Accessories Ref No or Q ty Part No SP Description lpc 2 581 512 01 s CD ROM Ipc 2 590 000 01 s MANUAL INSTRUCTION JAPANESE ENGLISH 1pc 2 990 242 01 s HOLDER B PLUG 1pc A CORD POWER See Sec 1 5 Warning on Power Connection LMD 1420 1410 Overall Overall Section 5 Block Diagrams VIDEO INPUT PROCESSOR SYNC gei LDVS NS LCD RECEIVER LVDS PANEL NTSC 3 DIMENSION DIGITAL COM FILTER FLASH SPEAKER MEMORY E AMP DC FAN MEMORY i CONTROL 128 x 2 ty YUV422 PE YC EE A _ _ _ Q _ _ Q_ n De i TALLY_G X p ou T TALLY_R_ TALLY Z x 1 SP I 69 SA x oc FOR LMD 1420 H A EE 383573 H c m I I i 2 5 INPUT 2 OUTPUT AUDIO VIDEO SW 1 C VCC KEY PAD l e 4 4 4 9 e C 5 SP232 o E E O a x gt E m
6. Electrical Parts List RSE EE 4 4 4 4 Packing Materials amp Supplied Accessories n 4 4 5 Block Diagrams Overall Seege dee Re I 5 1 6 Frame Wiring Diagram Frame Wiring nie e Soca Lei ass 6 1 LMD 1420 1410 Section 1 Service Overview 1 1 Appearance Figure 1 2 Board Location GA board X board LMD 1420 only Ew aboard a BA board sm QS ELA Inverter board Ted d H board X B J board LMD 1420 1410 1 1 1 3 Disassembly 1 3 1 Rear Cover Rear cover Four screws Three hooks PWH4 x 14 Five screws PWH4 x 14 Four hooks Lar AN N Three hooks Cushion 1 3 2 Q Board Remove the rear cover Refer to Section 1 3 1 D Two screws T PWH3x6 Three harnesses Harness cover 8 Two screws PSWS x 12 AC holder he Screw Two screws PSW4 x 8 T PwHsx6 5 Harness Q board Cushion LMD 1420 1410 1 3 3 GA Board Remove the rear cover Refer to Section 1 3 1 Three harnesses Five screws PWH3 x 6 AIT GA board N N i lt gt Cushion 1 3 4 Inverter Board BA Board Remove the rear cover Refer to Section 1 3 1 Remove the Q board Refer to Section 1 3 2 Five screws PWH3 x 6 Four screws KN Five screws Five harnesses PWH3 x 6 BA board Cushion LMD 1420 1410 1 3 5 DC Fan
7. SON Y LCD MONITOR LMD 1420 LMD 1410 SERVICE MANUAL 1st Edition AR WARNING This manual is intended for qualified service personnel only To reduce the risk of electric shock fire or injury do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so Refer all servicing to qualified service personnel WARNUNG Die Anleitung ist nur f r qualifiziertes Fachpersonal bestimmt Alle Wartungsarbeiten d rfen nur von qualifiziertem Fachpersonal ausgef hrt werden Um die Gefahr eines elektrischen Schlages Feuergefahr und Verletzungen zu vermeiden sind bei Wartungsarbeiten strikt die Angaben in der Anleitung zu befolgen Andere als die angegeben Wartungsarbeiten d rfen nur von Personen ausgef hrt werden die eine spezielle Bef higung dazu besitzen AVERTISSEMENT Ce manual est destin uniquement aux personnes comp tentes en charge de l entretien Afin de r duire les risques de d charge lectrique d incendie ou de blessure n effectuer que les r parati
8. Speaker Remove the rear cover Refer to Section 1 3 1 Remove the Q board Refer to Section 1 3 2 Label side Two screws P2 x 14 Screw dicasi Po PWH3 x 6 PWH3 x 6 DC fan Two screws Fan bracket P2x 14 a NG S board Two screws ZB sea Board holder PWH3 x 6 Two screws 2 PTP2 x 6 Fan bracket DC fan Speaker Cushion 1 3 6 J Board Remove the rear cover Refer to Section 1 3 1 Remove the Q board Refer to Section 1 3 2 Two screws PWH M3 x 8 J board ON T 2 Harness Three hooks A AC button Cushion 1 4 LMD 1420 1410 1 3 7 LCD Panel Remove the rear cover Refer to Section 1 3 1 Remove the Q board Refer to Section 1 3 2 Remove the GA board Refer to Section 1 3 3 Remove the inverter board and BA board Refer to Section 1 3 4 Remove the DC fan and speaker Refer to Section 1 3 5 Remove the J board Refer to Section 1 3 6 Screw ST PWH3x6 Cable retainer P SS 5 4 Four screws E 7 PWH M3 x 8 NN 3 Four screws PWH M3 x 8 LCD panel LL Two cushions gt gt Protection plate Z O cr 9 Two cushions Two screws 6 Two screws PWH3 x 6 PWH3 x 6 Cushion LMD 1420 1410 1 5 1 3 8 H Board X Board X Board LMD 1420 only Remove the rear cover Refer to Section 1 3 1 Remove the Q board Ref
9. T Ei o gt 7T TT 77 5 SEO 6060 OJO JD TE Q Q SDI RGB RGB L L L RGB IN RGB OUT EA AL PARALLEL SPIN SYNC SYNC LINE A IN LINE A OUT LINE B IN LINE B OUT SDI IN IN OUT WC SOUT REMOTE DIN Overall LMD 1420 1410 5 1 5 1 LMD 1420 1410 A Section 6 Frame Wiring Diagram 1 CN702 1 19V 19V Dorm 19V 18V GND GND BOAR D LCD BR LCD BR 1 GND GND LCD_ON LCD_ON GND GND L SPEAKER J26 e 1 1 1 B C Frame Wiring CN701 SECHER Ts GNDl9 5 R COMP CR I B COMP CRI R_COMP_CR_ SsCcL1 SYS_MUT 6 1 J12 3 SENSOR2 J8 12V 12V GND GND VCC 9V VCC VCC GND GND NC GND LCD_ON LCD_BR J1 CVBS_PAL GND SY SC GND G_COMP_Y_IN R_COMP_CR_IN B_COMP_CR_IN GND EXT_SYNC_IN GND SDA 1 SCL 1 SYS MUTE AUD VOL J4 KPDO KPD1 KPD2 KPD3 KPD4 KPD5 KPD6 GND TXD RX GND SDI_EN VCC 9V BA Frame Wiring RXIN1 LCD_5V RXIN1 RXIN2 RXCLKIN RXIN2 RXCLKIN RXIN3 RXINO EE E 1 GND 2 R_J2 AE FOR LMD 1420 5 a ETIN INT YO 1 2 SCL_KEYPAD SDA_KEYPAD 3 4 GND 5 6 V33_KEYPAD V33_KEYPAD
10. er to Section 1 3 2 Remove the GA board Refer to Section 1 3 3 Remove the inverter board and BA board Refer to Section 1 3 4 Remove the DC fan and speaker Refer to Section 1 3 5 Remove the J board Refer to Section 1 3 6 Remove the LCD panel Refer to Section 1 3 7 jm Harness 2 Six screws PWH M3 x 8 8 H board Harness 5 Two screws PWH M3 x 8 6 X baord LMD 1420 onl only ESD plate Cushion 1 4 Unleaded Solder Boards requiring use of unleaded solder are printed with a lead free mark LF indicating the solder contains no lead Caution Some printed circuit boards may not come printed with the lead free mark due to their particular size MF LEAD FREE MARK Be sure to use the unleaded solder for the printed circuit board printed with the lead free mark The unleaded solder melts at a temperature about 40 C higher than the ordinary solder therefore it is recommended to use the soldering iron having a temperature regulator The ordinary soldering iron can be used but the iron tip has to be applied to the solder joint for a slightly longer time The printed pattern copper foil may peel away if the heated tip is applied for too long so be careful 1 6 LMD 1420 1410 1 5 Warning on Power Connection Use a proper power cord for your local power supply The United States Canada Continental Europe UK Ireland Australia New Zeala
11. es For the external operation of PARALLEL REMOTE terminal refer to the Operating Instructions Replace the H board 3 2 LMD 1420 1410 3 4 Image is abnormal Image is abnormal Are harness and flexible flat cable connected correctly ls the symptom improved when another Q board is installed Yes ls the symptom improved when another BA board is installed Replace the LCD panel Yes Connect the harness and flexible flat cable correctly gt Replace the Q board Replace the BA board 3 5 TALLY lamp is not lit LMD 1420 only TALLY lamp is not lit correctly ls the symptom improved when another X board is installed Replace the BA board LMD 1420 1410 Connect the harness and flexible flat cable correctly Replace the X board 3 3 3 6 Output function is abnormal Output function is abnormal Replace the Q board 3 7 Fan is abnormal Fan is abnormal Are harness and flexible flat cable Connect the harness and connected correctly flexible flat cable correctly ls there any fan that operates normally No Replace the BA board Replace the abnormal fan Is the symptom improved Yes No problem ls the symptom improved when another BA board is installed Yes RC RT
12. nd Plug type VM0233 COX 07 636 Female end VM0089 COX 02 VM0310B VM0303B Cord type SVT H05VV F CEE 13 53rd O C Rated Voltage amp Current 10 A 125 V 10 A 250 V 10 A 250 V Safety approval UL CSA VDE VDE 1 Use an appropriate rating plug which is applied to local regulations LMD 1420 1410 1 7 Section 2 Electrical Alignment 2 1 Preparation 2 1 1 Required Equipment Luminance meter If Minolta CA 210 CA 110 or equivalent There is not available make adjustment by visually comparing the LCD monitor with the reference monitor that has already been calibrated correctly Signal generator TG2000 or equivalent 2 1 2 Warm up Time Before starting adjustment allow a warm up of minimum 120 minutes to stabilize the backlight of the LCD panel 2 1 3 How to Enter Service Mode 1 Press MENU to display the MENU screen 2 Press the LINE A and ENTER buttons simultaneously with MENU screen appeared to enter the service mode 2 1 4 Preparing the Power Supply and Signals 1 Connectthe supplied power cord to AC IN of this unit Power voltage 100 to 240 V AC 50 60 Hz 2 Input the composite signal from the TG2000 to this unit to display entirely white screen 3 Turn on the power of this unit Select the signal that is used for signal input LMD 1420 1410 2 2 White Balance Adjustment Press MENU to display the user menu To move the cursor to select an item u
13. ons indiqu es dans le mode d emploi moins d tre qualifi pour en effectuer d autres Pour toute r paration faire appel une personne comp tente uniquement LMD 1420 1410 LMD 1420 1410 Table of Contents 1 Service Overview 1 1 Appearance AAA Eden 1 1 1 2 Board EoCAtiOM es aaa REE E E init 1 1 153 DisassemblV anos 1 2 123 1 RearCOoVeE a an iia 1 2 1 3 2 QBoatd ER 1 2 1 3 3 A EE 1 3 1 3 4 Inverter Board BA Board 1 3 1 3 5 DE Fan Speaket nea annoiata 1 4 13200 Beat ie span S fail La deli 1 4 1 3 7 ECD MP 1 5 1 3 8 H Board X Board X Board LMD 1420 only 1 6 1 4 Unleaded Solder EEE s 1 6 1 5 Warning on Power Connection ss 1 7 2 Electrical Alignment 2 1 Preparation 2 emen ve e P RR OI iaia 2 1 2 1 1 Required Equipment ss 2 1 2 1 2z Warnm up Timeo ern lett erret 2 1 2 1 3 Howto Enter Service Mode AA 2 1 2 1 4 Preparing the Power Supply and Signals 2 1 2 2 White Balance Adjustment ener 2 1 3 Troubleshooting 3 1 Backlight does not light A 3 1 3 2 SyStem does Not sarita 3 2 3 3 Operation of this unit is abnormal serere 3 2 3 4 Images abnormal acie te eu nenn 3 3 3 5 TALLY lamp is not lit LMD 1420 only 3 3 3 6 Output function is abnormal i 3 4 EE ENEE e E EE 3 4 4 Spare Parts 4 1 Notes or Repair Parts aaa in iii 4 1 4 2 Exploded Views ici ts 4 2 4 3
14. se the Up Tor Down key To set the selected item press the ENTER key 1 Move the cursor to WHITE BALANCE using the Up T key and press the ENTER key to enter the COLOR TEMP layer 2 After pressing the ENTER key select USER SETTING using the Up T key and press the ENTER key HIGH adjustment Target value x 0 283 y 0 298 1 Set the signal level of the TG2000 to 80IRE 2 Select ADJUST GAIN and adjust the GAIN Adjust using G and B while R is fixed 3 Set the signal level of the TG2000 to 30IRE 4 Select ADJUST BIAS and adjust the BIAS Adjust using G and B while R is fixed 5 Adjust the tracking by steps 3 and 5 6 Enter the service mode and move the cursor to TEP using the Down J key Press the ENTER key to enter the COLOR TEMP layer 7 Move the cursor to C TEMP SAVE using the Down key and press the ENTER key Select HIGH using the Up T key and press the ENTER key LOW adjustment Target value x 0 313 y 0 329 1 Set the signal level of the TG2000 to 80IRE 2 Select ADJUST GAIN and adjust the GAIN Adjust using G and B while R is fixed 3 Set the signal level of the TG2000 to 30IRE 4 Select ADJUST BIAS and adjust the BIAS Adjust using G and B while R is fixed 5 Adjust the tracking by steps 3 and 5 6 Enter the service mode and mo
15. ve the cursor to TEP using the Down J key Press the ENTER key to enter the COLOR TEMP layer 7 Move the cursor to C TEMP SAVE using the Down key and press the ENTER key Select LOW using the Up T key and press the ENTER key 2 1 Section 3 Troubleshooting 3 1 Backlight does not light Backlight does not light Are harness and flexible flat cable connected correctly ls the backlight lit when another BA board is installed ls the backlight lit when another GA board is installed Replace the LCD panel LMD 1420 1410 Connect the harness and flexible flat cable correctly Replace the BA board Replace the GA board 3 1 3 2 System does not start System does not start Are harness and flexible flat cable Connect the harness and connected correctly flexible flat cable correctly ls the symptom improved when another GA board is installed Yes cups E ME Replace the GA board Is the symptom improved when another J board is installed Replace the BA board 3 3 Operation of this unit is abnormal No KG ag Replace the J board Operation of this unit is abnormal Are harness and flexible flat cable connected correctly No Connect the harness and flexible flat cable correctly ls the symptom improved by the external operation of PARALLEL REMOTE terminal No aa Replace the BA board Note Y
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