Sony LMD-2450W Service Manual
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Sony LMD-2450W Service Manual

Sony LMD-2450W Service Manual

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LCD MONITOR
LMD-2450W
LMD-2450MC
LMD-2450MD
LMD-2050W
SERVICE MANUAL
1st Edition (Revised 2)

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Summary of Contents for Sony LMD-2450W

  • Page 1 LCD MONITOR LMD-2450W LMD-2450MC LMD-2450MD LMD-2050W SERVICE MANUAL 1st Edition (Revised 2)
  • Page 2 Beim Einbau des Geräts ist daher im Festkabel ein leicht zugänglicher Unterbrecher einzufügen, oder das Netzkabel mu ß mit einer in der Nähe des Geräts befindlichen, leicht zugänglichen Wandsteckdose verbunden werden, damit sich bei einer Funktionsstörung die Stromversorgung zum Gerät jederzeit unterbrechen lä ß t. LMD-2450W...

  • Page 3: Table Of Contents

    Control operation of this unit is abnormal ...... 3-2 3-4. Image is abnormal ............3-3 1. Service Overview 3-5. TALLY lamp is not lit ............ 3-3 3-6. Fan is abnormal (LMD-2450W/2450MD/2450MC) ..3-4 1-1. Appearance Figure ............1-1 1-2. Board Location ............... 1-1 1-3. Disassembly ..............1-2 4.

  • Page 5: Manual Structure

    Manual Structure Purpose of this manual This manual is the Service Manual of the LCD Monitor LMD-2450W/2450MC/ 2450MD/2050W. This manual contains the service overview, electrical alignments, troubleshooting, spare parts, block diagrams, and frame wiring. The service of this unit is basically performed by the replacement of board.

  • Page 7: Service Overview

    Section 1 Service Overview 1-1. Appearance Figure LMD-2050W/LMD-2450W LMD-2450MD/2450MC 1-2. Board Location T board G2 board LMD-2050W HB2 board X board G1 board Inverter board B board HB1 board Q board LMD-2450W/2450MD/2450MC T board HA2 board G2 board X board...

  • Page 8: Disassembly

    (B4 x 12) 4 Four screws (B4 x 12) 6 Screw covers !- Three hooks 7 Four screws 8 Four hooks (BVTP 4 x 8) 3 Stand 5 Hinge assembly != Rear cover !/ Four hooks 9 Three hooks LMD-2450MD/2450MC Cushion LMD-2450W...

  • Page 9: Q Board

    1-3-2. Q Board . Remove the rear cover. (Refer to Section 1-3-1.) The illustration indicates LMD-2050W. 3 Two harnesses 1 Four screws (PWH3 x 6) 2 Q board Cushion LMD-2450W...

  • Page 10: Connector Plate Assembly/T Board

    1-3-3. Connector Plate Assembly/T Board . Remove the rear cover. (Refer to Section 1-3-1.) . Remove the Q board. (Refer to Section 1-3-2.) LMD-2450W/2450MD/2450MC 1 Five screws 2 Wall mount (PWH3 x 6) bracket LMD-2050W 2 Wall mount 1 Four screws...

  • Page 11: G1 Board (Lmd-2050W/2450W)/G2 Board

    . Remove the connector plate assembly and option case. (Refer to Section 1-3-3.) 6 Four screws 2 Three harnesses (PWH3 x 6) 3 Four screws (PWH3 x 6) 1 Harness 5 G1 board 8 G2 board 4 Board holder 7 Board holder Cushion LMD-2450W...

  • Page 12: B Board

    . Remove the connector plate assembly and option case. (Refer to Section 1-3-3.) The illustration indicates LMD-2050W. 1 Six screws (PWH3 x 6) 2 Main case 4 Five harnesses LVDS cable 5 Two harnesses 6 Five screws (PWH3 x 6) 7 B board 3 Two harnesses Cushion LMD-2450W...

  • Page 13: Inverter Board (Lmd-2050W)

    . Remove the connector plate assembly and option case. (Refer to Section 1-3-3.) . Remove the B board. (Refer to Section 1-3-5.) 2 Inverter cover 1 Four screws (PWH3 x 6) 3 Four screws 6 Four harnesses (PWH3 x 6) 4 Inverter board 5 Harness Cushion LMD-2450W...

  • Page 14: Hb1 Board/Hb2 Board/X Board (Lmd-2050W)

    !' Ground plate (L) !. Keypad (L) 6 Harness 2 Two screws (PWH3 x 6) ![ Screw (PWH3 x 6) 3 Two screws (PWH3 x 6) !; Six hooks !/ Ground plate (R) !] X board Cushion 9 Six hooks LMD-2450W...

  • Page 15: Ha1 Board/Ha2 Board/X Board (Lmd-2450W/2450Md/2450Mc)

    1-3-8. HA1 Board/HA2 Board/X Board (LMD-2450W/2450MD/2450MC) . Remove the rear cover. (Refer to Section 1-3-1.) LMD-2450W 7 Main frame assembly 1 Fourteen screws (PWH M3 x 8) 4 Harness !\ Two screws (PWH3 x 6) 8 Two screws (PWH3 x 6) 5 Harness !.
  • Page 16 != HA1 board 6 Harness !\ X board 2 Two screws !] Screw (PWH3 x 6) (PWH3 x 6) 3 Three screws (PWH3 x 6) !, Ground plate (L) !' Six hooks !- Ground plate (R) Cushion 0 Six hooks 1-10 LMD-2450W...

  • Page 17: G3 Board/S Board (Lmd-2450W/2450Md/2450Mc)

    1-3-9. G3 Board/S Board (LMD-2450W/2450MD/2450MC) . Remove the rear cover. (Refer to Section 1-3-1.) The illustration indicates LMD-2450W. 3 Two screws (PWH3 x 6) 2 Three harnesses 5 S board 1 Two harnesses 4 G3 board Cushion 1-11 LMD-2450W...

  • Page 18: Dc Fan (Lmd-2450W/2450Md/2450Mc)

    1-3-10. DC Fan (LMD-2450W/2450MD/2450MC) . Remove the rear cover. (Refer to Section 1-3-1.) LMD-2450W 6 Two screws (PWH3 x 6) 7 Fan bracket 1 Two screws 9 DC fan (PWH3 x 6) !- Two screws (PWH3 x 6) 4 DC fan...

  • Page 19: Speaker (Lmd-2050W/2450W)

    1 Screw 9 Harness (PWH3 x 6) 5 Screw 7 Two screws 2 Speaker holder (PWH3 x 6) (PWH M3 x 8) 6 Speaker holder 4 Speaker 8 Speaker 3 Two screws (PWH M3 x 8) B board Cushion 1-13 LMD-2450W...

  • Page 20: Lcd Panel

    3 Main chassis assembly 1 Two screws (PWH3 x 6) 2 Two screws (PWH3 x 6) 5 LCD panel 4 Harness Cushion LMD-2450W/2450MD/2450MC 9 Main chassis assembly 7 Two screws : LMD-2450MD/2450MC 2 Bracket (PWH3 x 6) 1 Two screws (PWH3 x 12)

  • Page 21: G1 Board (Lmd-2450Md/2450Mc)

    (PWH3 x 6) 0 Harness !] G1 board 5 Side cover (AC) 2 Two screws (PWH3 x 6) != Board holder 3 Six screws 4 Two screws 1 Two screws (PWH3 x 6) (PWH3 x 6) (PWH3 x 6) 1-15 LMD-2450W...

  • Page 22: Unleaded Solder

    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. 1-16 LMD-2450W...

  • Page 23: Electrical Alignments

    Down ↓ key and press the [ENTER] button to enter the SIGNAL/WHITE BALANCE layer. To move the cursor to select an item, use the Up ↑ or Down ↓ key. To set the selected item, press the [ENTER] button. LMD-2450W...

  • Page 24: A/D Adjustment (Component)

    NTSC SETUP No specific conditions PB/B OFFSET PR/R OFFSET 1080/60I 100% 8 color bar-signal Y/G LEVEL PB/B LEVEL Conditions: PR/R LEVEL COMPONENT LEVEL No specific conditions Y/G OFFSET NTSC SETUP No specific conditions PB/B OFFSET PR/R OFFSET Table 1 LMD-2450W...

  • Page 25: A/D Adjustment (Composite)

    No specific conditions 1-12 NTSC SETUP 7.5 100% 8 color-bar signal NTSC SETUP 7.5 100% 8 color-bar signal Y/G LEVEL Y/G LEVEL PB/B LEVEL Conditions: PB/B LEVEL Conditions: PR/R LEVEL NTSC SETUP Table 4 PR/R LEVEL NTSC SETUP Table 3 LMD-2450W...

  • Page 26: A/D Adjustment (Computer)

    . PR LEVEL . Y OFFSET . PB OFFSET . PR OFFSET COMPUTER selection input 1-13 VGA60 100% 8 color-bar signal Y/G LEVEL PB/B LEVEL PR/R LEVEL Conditions: Y/G OFFSET No specific conditions PB/B OFFSET PR/R OFFSET Table 5 LMD-2450W...

  • Page 27: Troubleshooting

    Replace the B board. Is the backlight Replace the G1 board. lit when another G1 board is installed? Is the backlight lit when another G2 board Replace the G2 board. is installed? Replace the LCD panel or inverter. LMD-2450W...

  • Page 28: System Does Not Start

    Is the symptom improved by the external Replace the B board. operation of PARALLEL REMOTE terminal? For the external operation of PARALLEL REMOTE terminal, refer to the Operating Instructions. Replace the HA1 or HA2 (HB1 or HB2) board. LMD-2450W...

  • Page 29: Image Is Abnormal

    TALLY lamp is not lit. Are harness and Connect the harness and flexible flat cable connected flexible flat cable correctly. correctly? Is the symptom improved when another Replace the X board. X board is installed? Replace the B board. LMD-2450W...

  • Page 30: Fan Is Abnormal (Lmd-2450W/2450Md/2450Mc)

    3-6. Fan is abnormal (LMD-2450W/2450MD/2450MC) Fan is abnormal. Are harness Connect the harness and and flexible flat cable flexible flat cable correctly. connected correctly? Replace the abnormal fan. Is the symptom improved? No problem. Is the symptom improved when another Replace the G3 board.
  • Page 31 Chassis Block LMD-2050W LMD-2450W 2. Standardization of Parts LMD-2450MD/MC 4-14 Some repair parts supplied by Sony differ from those Stand Block LMD-2050W 4-10 used for the unit. These are because of parts common- LMD-2450W ality and improvement. AC Adaptor...
  • Page 32 Cover Block (LMD-2050W) 4-2. Exploded Views B4 x 12 B4 x 12 PWH M3 x 8 PWH M3 x 8 PWH M3 x 8 PTPWH3 x 6 PWH3 x 6 PWH3 x 6 LMD-2450W...
  • Page 33 3-212-957-01 s SHEET (L), KEYPAD 3-212-960-01 s COVER, SCREW 3-212-961-01 s KEYPAD (R) 3-212-962-01 s KEYPAD (L) 2-580-638-01 s SCREW, +BVTP2 4X8 7-681-000-61 s SCREW +PWH M3X8 7-682-563-09 s SCREW +B 4X12 7-682-903-19 s SCREW +PWH 3X6 7-685-903-11 s SCREW +PTPWH 3X6 (TYPE2) LMD-2450W...
  • Page 34 Cover Block (LMD-2450W) B4 x 12 B4 x 12 PWH M3 x 8 PWH M3 x 8 PWH M3 x 8 PTPWH3 x 6 PWH3 x 6 PWH3 x 6 LMD-2450W...
  • Page 35 Cover Block (LMD-2450W) Part No. SP Description X-2178-718-1 s BEZEL ASSY X-2178-719-1 s COVER ASSY, REAR 1-789-800-11 s MOUNTED CIRCUIT BOARD, HA2 1-789-801-11 s MOUNTED CIRCUIT BOARD, HA1 1-789-802-11 s MOUNTED CIRCUIT BOARD, X 1-910-037-98 s SH CONNECTOR ASSY 8P...
  • Page 36 HB1 BOARD 3 x 6 PWH3 x 6 PWH3 x 6 3 x 6 PWH3 x 6 3 x 6 3 x 6 3 x 6 PWH M3 x 8 3 x 6 3 x 6 M3 x 8 LMD-2450W...
  • Page 37 1-910-038-07 s FI CONNECTOR ASSY 30P 2-686-285-01 s (+)T M4 WITH LW 3-268-744-01 s SCREW F 2.5X4 4-635-966-01 s SCREW (HEX) 7-682-903-39 s SCREW +PWH M3X10 7-682-903-19 s SCREW +PWH 3X6 7-682-547-09 s SCREW +B 3X6 7-681-000-61 s SCREW +PWH M3X8 LMD-2450W...
  • Page 38 Chassis Block (LMD-2450W) B3 x 6 PWH3 x 6 PWH3 x 6 3 x 6 PWH3 x 6 PWH M3 x 10 TO X BOARD TO HA2 BOARD TO HA1 BOARD 3 x 6 PWH3 x 6 3 x 6...
  • Page 39 Chassis Block (LMD-2450W) Part No. SP Description 1-787-664-11 s D.C. FAN 1-787-664-21 s D.C. FAN 1-787-664-31 s D.C. FAN 1-789-265-11 s MOUNTED CIRCUIT BOARD, S 1-789-804-11 s MOUNTED CIRCUIT BOARD, Q 1-789-805-11 s MOUNTED CIRCUIT BOARD, G3 1-789-806-11 s MOUNTED CIRCUIT BOARD, G2...
  • Page 40 Stand Block (LMD-2050W/2450W) BVTP4 x 8 B4 x 12 B4 x 12 B4 x 12 K4 x 8 4-10 LMD-2450W...
  • Page 41 3-212-907-01 s COVER, HINGE 3-212-909-01 s COVER (FRONT), ARM 3-212-910-01 s COVER (REAR), ARM 3-212-911-01 s COVER, BASE 2-580-638-01 s SCREW, +BVTP2 4X8 2-580-644-01 s SCREW, +KTP2 3X8 7-682-563-09 s SCREW +B 4X12 7-682-261-04 s SCREW +K 4X8 4-11 LMD-2450W...
  • Page 42 Cover Block (LMD-2450MD/2450MC) PWH3 x 6 BKM-243SH PWH M3 x 8 PWH M3 x 8 PWH M3 x 8 PTPWH 3 x 6 3 x 6 PWH3 x 6 4-12 LMD-2450W...
  • Page 43 3-212-916-01 s KEYPAD(L) 3-213-008-01 s SHEET (R), KEYPAD 3-213-009-01 s SHEET (L), KEYPAD 3-214-807-01 s PLATE, PROTECTION 2-580-638-01 s SCREW, +BVTP2 4X8 7-681-000-61 s SCREW +PWH M3X8 7-682-903-19 s SCREW +PWH 3X6 7-685-903-11 s SCREW +PTPWH 3X6 (TYPE2) 4-13 LMD-2450W...
  • Page 44 PWH3 x 6 3 x 6 3 x 6 3 x 6 3 x 6 P3 x 14 3 x 12 PWH3 x 12 PWH3 x 6 3 x 6 P3 x 14 PWH3 x 6 3 x 6 4-14 LMD-2450W...
  • Page 45 1-910-039-40 s CONNECTOR ASSY (AC SWITCH) 1-910-037-92 s PH CONNECTOR ASSY 12P 3-268-744-01 s SCREW F 2.5X4 4-635-966-01 s SCREW (HEX) 7-682-903-19 s SCREW +PWH 3X6 7-682-547-09 s SCREW +B 3X6 7-682-151-09 s SCREW +P3X14 7-682-903-41 s SCREW +PWH M3X12 4-15 LMD-2450W...
  • Page 46 AC Adaptor (LMD-2450MD/2450MC) 3 x 6 PWH 3 x 6 4 x 8 3 x 6 4 x 8 PWH 3 x 6 PSW 3 x 12 3 x 6 PWH 3 x 6 4-16 LMD-2450W...
  • Page 47 2-990-241-02 s HOLDER (A), PLUG 3-213-024-01 s COVER (DC), SIDE 3-213-025-01 s CASE, BOTTOM 3-213-029-01 s RUBBER, FOOT 3-215-041-01 s COVER (AC), SIDE 7-682-903-19 s SCREW +PWH 3X6 7-682-950-09 s SCREW +PSW M3X12 2-434-609-11 s SCREW +PSW 4X8 4-17 LMD-2450W...

  • Page 48: Packing Materials & Supplied Accessories

    4-3. Packing Materials & Supplied Accessories ---------------------------------------- PACKING MATERIALS & SUPPLIED ACCESSORIES ---------------------------------------- *1:[LMD-2450W(SY)/2050W(SY)] *2:[LMD-2450MD(SY)] *3:[LMD-2450W(CN)/2050W(CN)] *4:[LMD-2450MC(CN)] Ref. No. or Q'ty Part No. SP Description 2-990-242-01 s HOLDER (B), PLUG *1 3-100-040-03 s MANUAL, INSTRUCTION (JAPANESE,ENGLISH) *3 3-100-040-13 s MANUAL, INSTRUCTION...
  • Page 49 PC_RED_A0-7 2450MC) OPA_V0-9 RX2 +/_ OPB_CLK/OPB_HD/OPB_VD/ RXC +/_ PC_GREEN_B0-7 OPB_MCLK/OPB_LRCK/ OPTION BOARD OPB_BICK/OPB_SDTI PC_BLUE_B0-7 EDID CONVERTER SW BOARD SCL/SDA PC_RED_B0-7 (FOR LMD-2450W/2450MD/ AD0-7/AX_D/R_WX/CLK_RW/IRQX_SLOT HB1 BOARD HD15 2450MC) PC_HSOUT OPB_Y0-9 G/B/R HB2 BOARD PC_VOUT OPB_U0-9 PC_CLK(2) INVERTER HSYNC/VSYNC PC_SOGOUT OPB_V0-9 TALLY...
  • Page 51 AC INLET (FOR LMD-2050W) INVERTER (FOR LMD-2450MC) CHASSIS (FOR LMD-2450MD) AC ADAPTOR SPEAKER SPEAKER (FOR LMD-2450W) CN701 (FOR LMD-2050W/2450W) LCD PANEL (FOR LMD-2450W) (FOR LMD-2050W) (FOR LMD-2450W/2450MD/2450MC) CN601 FAN1 INVERTER FAN2 (FOR LMD-2450W) AC INLET FAN3 CHASSIS Frame Wiring LMD-2450W...
  • Page 53 20 V AC range are suitable. (See Fig. A) To Exposed Metal Parts on Set 0.15 µ F 1.5 k Z voltmeter (5.25V) Earth Ground Fig A. Using an AC voltmeter to check AC leakage. LMD-2450W...
  • Page 54 LMD-2450W (SY, CN) LMD-2450MC (CN) LMD-2450MD (SY) Printed in Japan Sony Corporation LMD-2050W (SY, CN) E 2008. 8 22 9-968-348-03 ©2007...

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