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Sony KLV-20G400A Service Manual
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Sony KLV-20G400A Service Manual

Lcd color television
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HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
SERVICE MANUAL
MODEL NAME
KLV-20G400A
KLV-20G400A
ORIGINAL MANUAL ISSUE DATE: 3/2008
:UPDATED ITEM
REVISION DATE
3/2008
3/2008
10/2008
9-883-773-03
REMOTE COMMANDER
RM-YA009
RM-YA009
SUBJECT
No revisions or updates are applicable at this time.
Reissue entire manual to include Wire and PWB Diagrams.
Removed Self Diagnosis logo from Front Cover and Self Diagnostic Function page.
Replaced pages 2 and 9.
LAX2
DESTINATION
CANADA
MEXICO
LCD COLOR TELEVISION
CHASSIS

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  • Page 1 HISTORY INFORMATION FOR THE FOLLOWING MANUAL: LAX2 SERVICE MANUAL CHASSIS MODEL NAME REMOTE COMMANDER DESTINATION KLV-20G400A RM-YA009 CANADA KLV-20G400A RM-YA009 MEXICO ORIGINAL MANUAL ISSUE DATE: 3/2008 :UPDATED ITEM REVISION DATE SUBJECT 3/2008 No revisions or updates are applicable at this time.
  • Page 2 LAX2 SERVICE MANUAL CHASSIS MODEL NAME REMOTE COMMANDER DESTINATION KLV-20G400A RM-YA009 CANADA KLV-20G400A RM-YA009 MEXICO KLV-20G400A RM-YA009 LCD COLOR TELEVISION 9-883-773-03...

  • Page 3: Table Of Contents

    KLV-20G400A TABLE OF CONTENTS SECTION TITLE PAGE Specifi cations .........................................4 Warnings and Cautions ......................................5 Safety-Related Component Warning ..................................6 Safety Check-Out ........................................8 Self-Diagnostic Function ......................................9 SECTION 1: DISASSEMBLY ....................................... 10 1-1. Rear Cover Removal ....................................10 1-2. Function Key Removal ....................................10 1-3. H3 Board Removal .......................................11 1-4.

  • Page 4: Specifications

    “BRAVIA” and , BRAVIA 8.7 kg Theatre Sync and DMPORT are trademarks or 19 lbs 2 registered marks of Sony Corporation. without stand 7.5 kg 16 lbs 8 All measurements are approximations. Design and specifi cations are subject to change without notice.

  • Page 5: Warnings And Cautions

    Les composants identifi es par une trame et par une marque ! sur les schemas de principe, les vues explosees et les listes de pieces sont d’une importance critique pour la securite du fonctionnement. Ne les remplacer que par des composants Sony dont le numero de piece est indique dans le present manuel ou dans des supplements publies par Sony.

  • Page 6: Safety-Related Component Warning

    KLV-20G400A SAFETY-RELATED COMPONENT WARNING There are critical components used in LCD color TVs that are important for safety. These components are identifi ed with shading and mark on the schematic diagrams and the electrical parts list. It is essential that these critical parts be replaced only with the part number specifi...
  • Page 7 Due to the higher melting point of Lead Free Solder the soldering iron tip temperature needs to be set to 370 degrees centigrade. This requires soldering equipment capable of accurate temperature control coupled with a good heat recovery characteristics. For more information on the use of Lead Free Solder, please refer to http://www.sony-training.com KLV-20G400A...

  • Page 8: Safety Check-Out

    KLV-20G400A SAFETY CHECK-OUT The AC leakage from any exposed metal part to earth ground and After correcting the original service problem, perform the following from all exposed metal parts to any exposed metal part having a safety checks before releasing the set to the customer: return to chassis, must not exceed 0.5 mA (500 microamperes).

  • Page 9: Self-Diagnostic Function

    KLV-20G400A SELF-DIAGNOSTIC FUNCTION IMPORTANT: The unit in this manual DOES NOT contain a self-diagnostic function. If an error occurs, the TV will not stay on. It is our recommendation that if a repair is required for this set, the technician should bring both the A Board and the G Board to the customer location.

  • Page 10: Section 1: Disassembly

    KLV-20G400A SECTION 1: DISASSEMBLY 1-1. REAR COVER REMOVAL Remove 2 screws from top of Rear Cover, +BVTP 3X10 Remove 2 screws, +PSW M4X12 Remove 4 screws from Terminal area, +BVTP 3X10 Remove 2 screws, +PSW M4X12 Remove 2 screws, +PSW M4X12 Remove 8 screws from both sides of Rear Cover, -BVTP 4X12 NOTE: The Vesa Brackets are not included in the Rear Cover Assembly.

  • Page 11: H3 Board Removal

    KLV-20G400A 1-3. H3 BOARD REMOVAL Remove 1 screw from the H3 Board. Disconnect one connector Remove 1 screw +PSW M3X6 and release the ground wire Bezel H3 Board 1-4. H2 BOARD, IR LENS, AND LED LENS REMOVAL Remove 3 screws, +BVTP 3X10 from H2 Board...

  • Page 12: A Board And G Board Removal

    KLV-20G400A 1-5. A BOARD AND G BOARD REMOVAL Remove 2 screws and release ground wire, +PSW M3X6 Remove 2 screws from bottom of Main Shield, +FH 3X4 Remove 4 screws, +PSW M3X6 Remove 1 screw (+FH 3X4) and a Hex Nut from Tuner...

  • Page 13: Stand Removal

    KLV-20G400A 1-6. STAND REMOVAL On a soft cloth, carefully place the TV set face down. Stand Assembly Remove 2 screws, +PSW M4X12 Lift the Stand Assembly away from the TV set. Main Bracket 1-7. SPEAKERS, LCD PANEL, AND MAIN BRACKET REMOVAL...

  • Page 14: Wire Dressing

    KLV-20G400A WIRE DRESSING OVERALL VIEW G Board H1 Board A Board Main Bracket Speaker (L) Speaker (R) H3 Board H2 Board KLV-20G400A...

  • Page 15: Section 2: Service Adjustments

    KLV-20G400A SECTION 2: SERVICE ADJUSTMENTS 2-1. RESETTING TO FACTORY DEFAULTS AFTER BOARD REPLACEMENT Traditional Service Mode is not available in this chassis. The only option for service technicians is to reset all of the settings to the Factory Default from the Self Diagnostic screen.

  • Page 16: Section 3: Diagrams

    KLV-20G400A SECTION 3: DIAGRAMS 3-1. CIRCUIT BOARDS LOCATION 3-2. PRINTED WIRING BOARDS AND All voltages are in V. SCHEMATIC DIAGRAMS INFORMATION S : Measurement impossibility. : B+line. All capacitors are in μF unless otherwise noted. pF : μμF 50WV or : B-line.
  • Page 17 KLV-20G400A REFERENCE INFORMATION Terminal name of semiconductors in silk screen printed circuit ( RESISTOR CAPACITOR : RN METAL FILM : TA TANTALUM Circuit Device Printed symbol Terminal name : RC SOLID : PS STYROL Collector Transistor : FPRD NONFLAMMABLE CARBON...

  • Page 18: Block Diagram

    KLV-20G400A 3-3. BLOCK DIAGRAM Sony: BTF-CA411Z Headphone RF in TV Tuner Genesis Hudson Audio in Speaker (FLI30602) CVBS in Sound Headphone S-video in Control 3W+3W /Effect Audio in Power AMP CVBS in TFA9800 S-video in 3W+3W LCD Panel Audio in...

  • Page 19: Connector Diagram

    KLV-20G400A 3-4. CONNECTOR DIAGRAM CN901 CN201 CN200 CN408 CN406 CN801 CN201 CN403 CN802 CN401 SP(R) SP(L) A Board G Board CN8102 CN9100 KLV-20G400A...

  • Page 20: Frame Diagram

    KLV-20G400A 3-5. FRAME DIAGRAM SPEAKER CN200 CN201 CN801 14V6 14V6 14V6 14V6 POWER BD. 56.04060.110 23.40363.001 GND 10 10 GND CN406 PANEL GND 11 11 GND PAN5 50 PAN5 PAN4 49 PAN4 48 GND 47 GND B0-N 46 B0-N CN201...

  • Page 21: Schematics And Supporting Information

    KLV-20G400A 3-6. SCHEMATICS AND SUPPORTING INFORMATION A BOARD SCHEMATIC DIAGRAM (1 OF 11) — L201 L201 IC203 IC203 HCB3216KF-121T40-GP HCB3216KF-121T40-GP G1084-33T43UF-GP G1084-33T43UF-GP 14V6 — C239 C239 C240 C240 C201 C201 C202 C202 L208 L208 PBY201209T-121Y-N-GP PBY201209T-121Y-N-GP L203 L203 L210 L210 3.3V_FLASH...

  • Page 22: A Board Schematic Diagram (2 Of 11)

    KLV-20G400A A BOARD SCHEMATIC DIAGRAM (2 OF 11) — R601 R601 R602 R602 100KR3J-L-GP 100KR3J-L-GP 100KR3J-L-GP 100KR3J-L-GP AV1/S-VIDEO1 AV2/S-VIDEO2 3.3V_VDD 3.3V_VDD — R603 R603 R604 R604 4K7R3J-2-GP 4K7R3J-2-GP 4K7R3J-2-GP 4K7R3J-2-GP SV1-D SV2-D SV1_DET 5 SV2_DET 5 L601 L601 R605 R605...

  • Page 23: A Board Schematic Diagram (3 Of 11)

    KLV-20G400A A BOARD SCHEMATIC DIAGRAM (3 OF 11) — FOR CM MODEL TM701 TM701 TUNER-27P-GP TUNER-27P-GP — R701 R701 680R3J-3-GP 680R3J-3-GP OG-321610G-GP OG-321610G-GP TUNER_SDA R714 R714 680R3J-3-GP 680R3J-3-GP L701 L701 BLM18HE152SN1D-GP BLM18HE152SN1D-GP SDA_TV 4 TU_SDA TUNER_SCL R716 R716 680R3J-3-GP 680R3J-3-GP...

  • Page 24: A Board Schematic Diagram (4 Of 11)

    KLV-20G400A A BOARD SCHEMATIC DIAGRAM (4 OF 11) — — R704 R704 56KR3F-GP 56KR3F-GP R705 R705 10KR3J-L1-GP 10KR3J-L1-GP AFT_OUT TUNER_AFT 6 3.3V_VDD — 3.3V_VDD C719 C719 R712 R712 R708 R708 SCD1U25V2ZY-1GP SCD1U25V2ZY-1GP 100KR3F-GP 100KR3F-GP 4K7R3J-2-GP 4K7R3J-2-GP R706 R706 22R3J-2-GP 22R3J-2-GP...

  • Page 25: A Board Schematic Diagram (5 Of 11)

    KLV-20G400A A BOARD SCHEMATIC DIAGRAM (5 OF 11) — IC401A IC401A C426 C426 SCD1U25V2ZY-1GP SCD1U25V2ZY-1GP HDMI_RXCN — R402 R402 20R3J-4-GP 20R3J-4-GP C411 C411 SC1U10V2KX-GP SC1U10V2KX-GP HDMI_RXCP R403 R403 20R3J-4-GP 20R3J-4-GP C402 C402 SCD33U16V3KX-1GP SCD33U16V3KX-1GP COMP_Y HDMI_RX0N C429 C429 SCD1U25V2ZY-1GP SCD1U25V2ZY-1GP...

  • Page 26: A Board Schematic Diagram (6 Of 11)

    KLV-20G400A A BOARD SCHEMATIC DIAGRAM (6 OF 11) — R717 R717 10KR3J-L1-GP 10KR3J-L1-GP R4123 R4123 VDDA33 10KR3J-L1-GP 10KR3J-L1-GP R4148 R4148 10KR3J-L1-GP 10KR3J-L1-GP VDDA33 IC401B IC401B R4142 R4142 10KR3J-L1-GP 10KR3J-L1-GP ESD_P VDDA33 R4111 R4111 10KR3J-L1-GP 10KR3J-L1-GP VDDA33 VDDA33 — R4129 R4129...

  • Page 27: A Board Schematic Diagram (7 Of 11)

    KLV-20G400A A BOARD SCHEMATIC DIAGRAM (7 OF 11) — IC401C IC401C TO 20" PANEL PANEL_EN B0_TX3P_E PPWR CH3P_LV_E/R0 R4121 R4121 NC/0R3J-L-GP NC/0R3J-L-GP B1_TX3N_E BL_EN PBIAS CH3N_LV_E/R1 PAN1 B2_TXCKP_E CLKP_LV_E/R2 PAN2 — R472 R472 47R3J-L1-GP 47R3J-L1-GP PANEL_DE B3_TXCKN_E DEN/VOP_FLD CLKN_LV_E/R3 PAN3...

  • Page 28: A Board Schematic Diagram (8 Of 11)

    KLV-20G400A A BOARD SCHEMATIC DIAGRAM (8 OF 11) — L403 L403 L406 L406 IC401D IC401D PBY201209T-121Y-N-GP PBY201209T-121Y-N-GP FCM2012KF-301T06-GP FCM2012KF-301T06-GP 3.3V_VDD VDDA33_LBADC 3.3V_VDD AVDD_LVDS_33 VDDA33_LBADC VDDA33_LBADC VSSA33_LBADC C4101 C4101 C4102 C4102 C4161 C4161 C4111 C4111 C4112 C4112 C4171 C4171 C4113 C4113...

  • Page 29: A Board Schematic Diagram (9 Of 11)

    KLV-20G400A A BOARD SCHEMATIC DIAGRAM (9 OF 11) L501 L501 FCM1608CF-121T03-GP FCM1608CF-121T03-GP — R502 R502 NC/1R3J-L1-GP NC/1R3J-L1-GP — 3.3V_FLASH_S 3.3V_FLASH Q501 Q501 R506 R506 R505 R505 NC/AP2305N-GP NC/AP2305N-GP NC/3K3R3J-L-GP NC/3K3R3J-L-GP NC/200R2J-L1-GP NC/200R2J-L1-GP — R510 R510 NC/22KR3J-L-GP NC/22KR3J-L-GP — /RESET 6,10...

  • Page 30: A Board Schematic Diagram (10 Of 11)

    KLV-20G400A A BOARD SCHEMATIC DIAGRAM (10 OF 11) — L802 L802 — NC/MLB-321611-8-GP NC/MLB-321611-8-GP 14V6 L801 L801 HCB3216KF-121T40-GP HCB3216KF-121T40-GP P14V6_SEL 14V6_SW R844 R844 100KR3J-L-GP 100KR3J-L-GP C801 C801 C804 C804 C802 C802 C803 C803 ESD_N — IC8101 IC8101 HT123 HT123 TFA9800J-N1-GP...

  • Page 31: A Board Schematic Diagram (11 Of 11)

    KLV-20G400A A BOARD SCHEMATIC DIAGRAM (11 OF 11) — HEADPHONE C821 C821 SC100P50V2JN-3GP SC100P50V2JN-3GP L815 L815 Q818 Q818 HCB3216KF-121T40-GP HCB3216KF-121T40-GP PMBS3904-1-GP PMBS3904-1-GP R824 R824 — 56KR3J-2-GP 56KR3J-2-GP R830 R830 430R3F-GP 430R3F-GP 14V6_SW 13VA 13V_OPA 13V_OPA C852 C852 C822 C822 C824...
  • Page 32 KLV-20G400A [POWER, CONNECTORS, TUNER, TUNER CONTROL, AUDIO, CONTORL, INDICATORS, VIDEO OUT, HUDSON POWER, GROUND, NVRAM, AUDIO AMP, AUDIO OUT] COMPONENT SIDE — — — — — — — KLV-20G400A...
  • Page 33 KLV-20G400A [POWER, CONNECTORS, TUNER, TUNER CONTROL, AUDIO, CONTORL, INDICATORS, VIDEO OUT, HUDSON POWER, GROUND, NVRAM, AUDIO AMP, AUDIO OUT] CONDUCTOR SIDE — — — — — — — KLV-20G400A...

  • Page 34: H1 Board Schematic Diagram

    KLV-20G400A H1 BOARD SCHEMATIC DIAGRAM — 3V3_Keypad C901 C901 SC1U25V0KX-GP SC1U25V0KX-GP POWER SOURCE MENU S901 S901 S902 S902 S903 S903 S904 S904 S905 S905 S906 S906 S907 S907 — SW-TACT-132-GP SW-TACT-132-GP SW-TACT-132-GP SW-TACT-132-GP SW-TACT-132-GP SW-TACT-132-GP SW-TACT-132-GP SW-TACT-132-GP SW-TACT-132-GP SW-TACT-132-GP SW-TACT-132-GP...

  • Page 35: H2 Board Schematic Diagram

    KLV-20G400A H2 BOARD SCHEMATIC DIAGRAM D9102 D9102 R9106 R9106 10R5J-GP 10R5J-GP GREEN — ORANGE R9107 R9107 10R5J-GP 10R5J-GP LED-GO-1-GP-U1 LED-GO-1-GP-U1 R9104 R9104 D9100 D9100 — 10R6J-1-GP 10R6J-1-GP LED-YG-56-GP LED-YG-56-GP GREEN L9100 L9100 AMBER MLB-321611-8-GP MLB-321611-8-GP R9103 R9103 22R5J-1-GP 22R5J-1-GP GREEN_POWER...

  • Page 36: H3 Board Schematic Diagram

    KLV-20G400A H3 BOARD SCHEMATIC DIAGRAM CN8103 CN8103 — R9107 0R5J-5-GP R9107 0R5J-5-GP R9108 0R5J-5-GP R9108 0R5J-5-GP SKT-JACK-249-GP SKT-JACK-249-GP D9101 D9101 D9102 D9102 1N4148W-7-F-GP 1N4148W-7-F-GP 1N4148W-7-F-GP 1N4148W-7-F-GP — — CN8102 CN8102 L819 L819 MLB-201209-22-GP MLB-201209-22-GP — HEADPHONE OUT L820 L820 MLB-201209-22-GP...

  • Page 37: Section 4: Exploded Views

    Ne les remplacer que par une piece portant le with part number specifi ed. numero specifi e. 4-1. REAR COVER ASSEMBLY AND STAND ASSEMBLY (Check the Sony Electronics Service Information website for any additional service related issues for this model.) 2-580-601-01 SCREW, +PSW M4X12 2-580-639-01...

  • Page 38: Chassis

    Ne les remplacer que par une piece portant le with part number specifi ed. numero specifi e. 4-2. CHASSIS (Check the Sony Electronics Service Information website for any additional service related issues for this model.) 2-580-639-01 SCREW, +BVTP2 4X12 7-685-647-79...
  • Page 39 MANUAL INSTRUCTION (WALL MOUNT) 3-297-681-11 MANUAL, INSTRUCTION (ENGLISH VERSION) 3-297-681-21 MANUAL, INSTRUCTION (FRENCH VERSION) 3-297-681-31 MANUAL, INSTRUCTION (SPANISH VERSION) 1-835-077-11 POWER-SUPPLY CORD SET Sony Corporation English Sony Technology Center 2008CJ74WEB-1 Technical Services Printed in USA 9-883-773-03 Service Promotion Department © 2008.3 KLV-20G400A...
  • Page 40 In an effort to reduce the size of this pdf fi le the tiled schematics are not attached to this Service Manual. To receive a complete set of the tiled schematics for this manual please submit a request to the Service Promotion Department at Service_Promotion@am.sony.com.

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