Sony LUMA LMD-1410 Service Manual Download Page 15 | Manualshive

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3-1

LMD-1420/1410

Section 3

Troubleshooting

3-1. Backlight does not light

Is the backlight

lit when another GA board

is installed?

Replace the LCD panel.

Backlight does not light.

Is the backlight

lit when another BA board

is installed?

Yes

Replace the BA board.

Replace the GA board.

No

No

Yes

No

Yes

Connect the harness and
flexible flat cable correctly.

Are harness

and flexible flat cable

connected correctly?

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Summary of Contents for LUMA LMD-1410

Page 1: ...LCD MONITOR LMD 1420 LMD 1410 SERVICE MANUAL 1st Edition ...

Page 2: ...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 dürfen nur von Personen ausgeführt werden die eine spezielle Befähigung dazu besitzen AVERTISSEMENT Ce manual est destiné uniquement aux personnes compétentes en charge de l entretien Afin de r...

Page 3: ... Alignment 2 1 Preparation 2 1 2 1 1 Required Equipment 2 1 2 1 2 Warm up Time 2 1 2 1 3 How to Enter Service Mode 2 1 2 1 4 Preparing the Power Supply and Signals 2 1 2 2 White Balance Adjustment 2 1 3 Troubleshooting 3 1 Backlight does not light 3 1 3 2 System does not start 3 2 3 3 Operation of this unit is abnormal 3 2 3 4 Image is abnormal 3 3 3 5 TALLY lamp is not lit LMD 1420 only 3 3 3 6 O...

Page 4: ...2 LMD 1420 1410 5 Block Diagrams Overall 5 1 6 Frame Wiring Diagram Frame Wiring 6 1 ...

Page 5: ...1 1 LMD 1420 1410 Section 1 Service Overview 1 1 Appearance Figure 1 2 Board Location H board Inverter board J board BA board S board Q board GA board X board LMD 1420 only ...

Page 6: ...our screws PWH4 x 14 3 Five screws PWH4 x 14 2 Stand 4 Four hooks 5 Three hooks 7 Three hooks 6 Three hooks Cushion 8 Rear cover 3 Three harnesses 2 Harness cover Cushion AC holder AC inlet 5 Harness 8 Q board 9 Two screws PSW3 x 12 1 Two screws PWH3 x 6 6 Two screws PWH3 x 6 4 Screw PSW4 x 8 7 Two screws PWH3 x 6 ...

Page 7: ...BA Board Remove the rear cover Refer to Section 1 3 1 Remove the Q board Refer to Section 1 3 2 Cushion 1 Three harnesses 2 Five screws PWH3 x 6 3 GA board Cushion 8 BA board 5 Inverter board 7 Five screws PWH3 x 6 1 Five screws PWH3 x 6 4 Four screws PWH3 x 6 6 Ten harnesses 3 Five harnesses 2 Frame ...

Page 8: ... 1 Remove the Q board Refer to Section 1 3 2 Cushion Speaker Two screws PTP2 x 6 2 Fan bracket 4 DC fan 6 Fan bracket 8 DC fan 3 Two screws P2 x 14 Two screws B3 x 14 5 Screw PWH3 x 6 1 Screw PWH3 x 6 7 Two screws P2 x 14 9 Board holder S board Label side Fan bracket DC fan Two screws PWH3 x 6 Cushion 2 Harness 5 Three hooks 6 AC cover 4 AC button 3 J board 1 Two screws PWH M3 x 8 ...

Page 9: ...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 Cushion 1 Screw PWH3 x 6 2 Cable retainer 5 Main frame 4 Four screws PWH M3 x 8 3 Four screws PWH M3 x 8 6 Two screws PWH3 x 6 7 Two screws PWH3 x 6 8 LCD panel Protection plate Two cushions 9 Two cushions ...

Page 10: ... 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 LEAD FREE MARK m 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 dC high...

Page 11: ...ontinental Europe UK Ireland Australia Canada New Zealand Plug type VM0233 COX 07 636 1 Female end VM0089 COX 02 VM0310B VM0303B Cord type SVT H05VV F CEE 13 53rd O C Rated Voltage 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 ...

Page 12: ......

Page 13: ...HITE BALANCE using the Up key and press the ENTER key to enter the COLOR TEMP layer 2 After pressing the ENTER key select USER SETTING using the Up 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...

Page 14: ......

Page 15: ...other GA board is installed Replace the LCD panel Backlight does not light Is the backlight lit when another BA board is installed Yes Replace the BA board Replace the GA board No No Yes No Yes Connect the harness and flexible flat cable correctly Are harness and flexible flat cable connected correctly ...

Page 16: ...Yes Connect the harness and flexible flat cable correctly Are harness and flexible flat cable connected correctly Is the symptom improved by the external operation of PARALLEL REMOTE terminal Replace the H board Operation of this unit is abnormal Yes Replace the BA board No Yes No Connect the harness and flexible flat cable correctly n For the external operation of PARALLEL REMOTE terminal refer t...

Page 17: ...ct the harness and flexible flat cable correctly Is the symptom improved when another Q board is installed No Yes No Yes Are harness and flexible flat cable connected correctly Replace the BA board TALLY lamp is not lit Yes Replace the X board No Connect the harness and flexible flat cable correctly Is the symptom improved when another X board is installed No Yes 3 4 Image is abnormal 3 5 TALLY la...

Page 18: ...t cable connected correctly Replace the abnormal fan Fan is abnormal Yes Replace the BA board No Connect the harness and flexible flat cable correctly Is there any fan that operates normally Yes No Is the symptom improved Replace the GA board No Replace the BA board Yes Is the symptom improved when another BA board is installed No problem No Yes ...

Page 19: ...arts 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 3 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 4 Harness Harnesses with no part number are not registered as spare parts In need of...

Page 20: ...WH3 x 6 PWH M3 x 8 PWH3 x 6 PWH3 x 6 PWH3 x 6 PWH3 x 6 PWH3 x 6 PWH3 x 6 PTP2 x 6 P2 x 14 P2 x 14 PWH M3 x 8 PWH M3 x 8 PWH M3 x 8 PWH3 x 6 PWH3 x 6 PWH3 x 6 PWH M3 x 8 PWH M3 x 8 PWH M3 x 8 PWH3 x 6 PWH 3 x 6 PWH3 x 6 B3 x 14 PWH 3 x 6 PSW4 x 8 PSW3 x 12 14 11 3 5 18 17 15 7 13 12 17 18 16 4 4 9 10 19 8 2 6 1 ...

Page 21: ...UIT BOARD Q for LMD 1420 9 1 789 263 11 s MOUNTED CIRCUIT BOARD BA 10 1 789 265 11 s MOUNTED CIRCUIT BOARD S 11 1 789 266 11 s MOUNTED CIRCUIT BOARD GA 12 1 805 847 11 s PANEL LCD 13 1 826 107 11 s SPEAKER 14 2 582 179 01 s COVER REAR 15 2 590 965 01 s BUTTON AC SWITCH 16 2 592 582 01 s PLATE PROTECTION for LMD 1420 17 2 592 583 01 s CUSHION for LMD 1420 18 2 592 583 11 s CUSHION for LMD 1420 19 2...

Page 22: ...15 11 s MOUNTED CIRCUIT BOARD H 1 1 789 228 11 s MOUNTED CIRCUIT BOARD H 1pc 1 789 263 11 s MOUNTED CIRCUIT BOARD BA 1pc 1 789 265 11 s MOUNTED CIRCUIT BOARD S 1pc 1 789 266 11 s MOUNTED CIRCUIT BOARD GA PACKING MATERIALS SUPPLIED ACCESSORIES Ref No or Q ty Part No SP Description 1pc 2 581 512 01 s CD ROM 1pc 2 590 000 01 s MANUAL INSTRUCTION JAPANESE ENGLISH 1pc 2 990 242 01 s HOLDER B PLUG 1pc C...

Page 23: ...L REMOTE 5 INPUT 2 OUTPUT AUDIO VIDEO SW L L L YC CVBS YC CVBS NTSC 3 DIMENSION DIGITAL COM FILTER CVBS FOR NTSC CVBS FOR APL YC VIDEO INPUT PROCESSOR YC LDVS RECEIVER B Cb H V YUV422 SYNC FLASH MEMORY LCD PANEL AMP DC L L L G Y R Cr RX TX KPD 0 6 TALLY NS LVDS KEY PAD TALLY_G TALLY_R FOR LMD 1420 I2C VCC FAN CONTROL MEMORY 128 x 2 BA Q GA X H SPEAKER ADG779 SP232 POWER BLOCK S SENSOR Overall ...

Page 24: ......

Page 25: ...ND GND FAN1 J9 1 2 3 FANSPIN1_1 GND 1 2 3 FANSPIN1_2 GND 12V_FAN1 12V_FAN1 J11 J10 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 12V LCD_ON LCD_BR VCC GND NC 12V GND GND 9V VCC VCC GND GND 12V LCD_ON LCD_BR VCC GND NC 12V GND GND 9V VCC VCC GND GND CN701 J8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 CVBS_PAL GND R_COMP_CR_IN SYS_MUTE GND S_Y S_C G_COMP_Y_IN EXT_SYNC_IN SCL_1 AUD_VOL S...

Page 26: ......

Page 27: ...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 accur...

Page 28: ...Printed in Japan Sony Corporation 2005 3 22 B P Company 2005 LMD 1420 SY LMD 1410 SY E 9 968 137 01 ...

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