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Sony LMD-1420 Service Manual

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LCD MONITOR
LMD-1420
LMD-1410
SERVICE MANUAL
1st Edition

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Summary of Contents for Sony LMD-1420

  • Page 1 LCD MONITOR LMD-1420 LMD-1410 SERVICE MANUAL 1st Edition...
  • Page 2 Ce manual est destiné uniquement aux personnes compétentes en charge de l’entretien. Afin de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres. Pour toute réparation faire appel à une personne compétente uniquement. LMD-1420/1410...

  • Page 3: Table Of Contents

    DC Fan/Speaker ................. 1-4 1-3-6. J Board ..................1-4 1-3-7. LCD Panel .................. 1-5 1-3-8. H Board/X Board (X Board: LMD-1420 only) ......1-6 1-4. Unleaded Solder ..................1-6 1-5. Warning on Power Connection ..............1-7 2. Electrical Alignment 2-1.
  • Page 4 5. Block Diagrams Overall ......................5-1 6. Frame Wiring Diagram Frame Wiring ....................6-1 LMD-1420/1410...

  • Page 5: Service Overview

    Section 1 Service Overview 1-1. Appearance Figure 1-2. Board Location GA board X board (LMD-1420 only) Q board BA board S board Inverter board H board J board LMD-1420/1410...

  • Page 6: Disassembly

    2 Harness cover 3 Three harnesses 9 Two screws (PSW3 x 12) !/ AC holder 4 Screw 7 Two screws (PSW4 x 8) (PWH3 x 6) 5 Harness 8 Q board 6 Two screws (PWH3 x 6) !- AC inlet Cushion LMD-1420/1410...

  • Page 7: Ga Board

    . Remove the Q board. (Refer to Section 1-3-2.) 2 Frame 1 Five screws (PWH3 x 6) 6 Ten harnesses 4 Four screws (PWH3 x 6) 7 Five screws (PWH3 x 6) 3 Five harnesses 8 BA board 5 Inverter board Cushion LMD-1420/1410...

  • Page 8: Dc Fan/Speaker

    . Remove the rear cover. (Refer to Section 1-3-1.) . Remove the Q board. (Refer to Section 1-3-2.) 1 Two screws (PWH M3 x 8) 3 J board 2 Harness 6 AC cover 5 Three hooks 4 AC button Cushion LMD-1420/1410...

  • Page 9: Lcd Panel

    3 Four screws (PWH M3 x 8) (PWH M3 x 8) 5 Main frame 8 LCD panel !/ Two cushions 9 Two cushions !- Protection plate 7 Two screws (PWH3 x 6) 6 Two screws (PWH3 x 6) Cushion LMD-1420/1410...

  • Page 10: H Board/X Board (X Board: Lmd-1420 Only)

    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. (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.) .

  • Page 11: Warning On Power Connection

    VM0089 COX-02/VM0310B VM0303B Cord type 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 1) Use an appropriate rating plug which is applied to local regulations. LMD-1420/1410...

  • Page 13: Electrical Alignment

    Down ↓ 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 ↑ key and press the “ENTER” key. LMD-1420/1410...

  • Page 15: Troubleshooting

    Is the backlight lit when another BA board Replace the BA board. is installed? Is the backlight Replace the GA board. lit when another GA board is installed? Replace the LCD panel. LMD-1420/1410...

  • Page 16: System Does Not Start

    Is the symptom improved by the external Replace the BA board. operation of PARALLEL REMOTE terminal? For the external operation of PARALLEL REMOTE terminal, refer to the Operating Instructions. Replace the H board. LMD-1420/1410...

  • Page 17: Image Is Abnormal

    Is the symptom improved when another Replace the BA board. BA board is installed? Replace the LCD panel. 3-5. TALLY lamp is not lit (LMD-1420 only) TALLY lamp is not lit. Are harness and Connect the harness and flexible flat cable connected flexible flat cable correctly.

  • Page 18: Output Function Is Abnormal

    Is there any fan that Replace the BA board. operates normally? Replace the abnormal fan. Is the symptom improved? No problem. Is the symptom improved when another Replace the BA board. BA board is installed? Replace the GA board. LMD-1420/1410...

  • Page 19: Spare Parts

    Therefore, specified parts should be used in the case of replacement. 2. 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.

  • Page 20: Exploded Views

    P2 x 14 PWH3 x 6 PWH3 x 6 P2 x 14 PWH3 x 6 PWH M3 x 8 PWH3 x 6 PWH3 x 6 PTP2 x 6 PWH M3 x 8 M3 x 8 PWH M3 x 8 LMD-1420/1410...

  • Page 21: Overall Block

    Overall Block Part No. SP Description X-2050-919-1 s BEZEL ASSY (for LMD-1410) X-2050-920-1 s BEZEL ASSY (for LMD-1420) X-2055-900-1 s STAND ASSY 1-787-341-11 s FAN , DC (40 SQUARE) 1-787-342-11 s FAN, DC (35 SQUARE) 1-789-212-11 s MOUNTED CIRCUIT BOARD, X...

  • Page 22: Electrical Parts List

    4-4. Packing Materials & Supplied 4-3. Electrical Parts List Accessories *1:[LMD-1410] ---------------------------------------- *2:[LMD-1420] PACKING MATERIALS & SUPPLIED ACCESSORIES ---------------------------------------- Ref. No. Ref. No. or Q'ty Part No. SP Description or Q'ty Part No. SP Description *2 1-789-212-11 s MOUNTED CIRCUIT BOARD, X...
  • Page 23 SYNC LDVS RECEIVER LVDS PANEL NTSC 3-DIMENSION ADG779 DIGITAL COM FILTER TALLY_G TALLY_R TALLY (FOR LMD-1420) 5-INPUT 2-OUTPUT AUDIO/VIDEO SW C / VCC KEY PAD SP232 RGB IN RGB OUT PARALLEL 8PIN SYNC SYNC LINE A IN LINE A OUT...
  • Page 25 RXIN3_ RXIN3_ RXIN0_ RXIN0_ LCD_ON LCD_ON LCD_BR LCD_BR CN702 INVERTER BOARD LCD_BR LCD_BR LCD_ON LCD_ON R_J2 R_J2 G_J2 G_J2 (FOR LMD-1420) INT_I/O INT_I/O SCL_KEYPAD SCL_KEYPAD SDA_KEYPAD SDA_KEYPAD SPEAKER V33_KEYPAD V33_KEYPAD CVBS_PAL CVBS_PAL V33_KEYPAD V33_KEYPAD AUD_OUT+ AUD_OUT_ G_COMP_Y_IN G_COMP_Y_IN R_COMP_CR_IN R_COMP_CR_IN...
  • Page 27 2 V AC range are suitable. (See Fig. A) To Exposed Metal Parts on Set 0.15 µ F 1.5 k Z voltmeter (0.75V) Earth Ground Fig A. Using an AC voltmeter to check AC leakage. LMD-1420/1410...
  • Page 28 LMD-1420 (SY) Printed in Japan Sony Corporation LMD-1410 (SY) E 2005. 3 22 9-968-137-01 B&P Company ©2005...

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Lmd-1410

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