HISTORY INFORMATION FOR THE FOLLOWING MANUAL: LA-3 SERVICE MANUAL CHASSIS MODEL NAME REMOTE COMMANDER DESTINATION KDF-42WE655 RM-Y915 US/CND KDF-50WE655 RM-Y915 US/CND ORIGINAL MANUAL ISSUE DATE: 9/2004 :UPDATED ITEM REVISION DATE SUBJECT 9/2004 No revisions or updates are applicable at this time.
Page 2
Self Diagnosis Supported model LA-3 SERVICE MANUAL CHASSIS MODEL NAME REMOTE COMMANDER DESTINATION KDF-42WE655 RM-Y915 US/CND KDF-50WE655 RM-Y915 US/CND KDF-42WE655 RM-Y915 LCD PROJECTION TELEVISION 9-965-971-04...
Inc. and are licensed by BBE Sound, Inc. under U.S. CineMotion, Memory Stick, Memory Stick Duo, Patent No. 4,638,258 and 4,482,866. Memory Stick PRO, Memory Stick PRO Duo, MagicGate, MID and Twin View are trademarks of Sony Manufactured under license from Corporation. Dolby Laboratories Licensing Corporation.
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. Les reglages de circuit dont l’importance est critique pour la securite du fonctionnement sont identifi...
KDF-42WE655/50WE655 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).
KDF-42WE655/50WE655 Self Diagnosis SELF-DIAGNOSTIC FUNCTION Supported model The units in this manual contain a self-diagnostic function. If an error occurs, the POWER/STANDBY or LAMP LED will automatically begin to fl ash. The number of times the LED fl ashes translates to a probable source of the problem. A defi nition of the POWER/STANDBY or LAMP LED fl ash indicators is listed in the instruction manual for the user’s knowledge and reference.
Page 9
KDF-42WE655/50WE655 Display of POWER/STANDBY or LAMP LED Flash Count For KDF-WF655 series For K DF-WE655 seri es POWER STD/DUO LAMP TIMER POWER/STANDBY Proj ection lamp Indicators Indi cat ors Screen Proj ection l amp - Oneflash is not usedfor self-diagnosis .
Page 10
KDF-42WE655/50WE655 Clearing the Result Display To clear the result display to “0”, press the buttons on the Remote Commander sequentially when the diagnostic screen is displayed, as shown below: 1. If the screen is already displayed, proceed to step 3. If not, Power off (Set to Standby model).
Page 12
KDF-42WE655/50WE655 Reading Lamp and Panel time Use the following to determine the lamp and panel time of a set. Screen Display Method In standby mode, press the buttons on the Remote Commander sequentially, in rapid succession, as shown below: 1. Press Display...
KDF-42WE655/50WE655 SECTION 1: DISASSEMBLY 1-1. REAR COVER REMOVAL Rear cover Eleven screws (+BVTP 4x16) 1-2. CENTER PILLAR REMOVAL 5 Gently lift the Center Pillar up then out from the bottom bracket. Three screws from the top of the center pillar...
KDF-42WE655/50WE655 1-3. SERVICE POSITION Chassis assembly Pull back on claw, then gently pull out chassis assembly 1-4. FAN AND CHASSIS ASSEMBLY REMOVAL Four screws (+PWH 4x35) Disconnect one connector D. C. FAN Four screws (+PWH 4x16) Chassis assembly Pull back on claw, Fan bracket with D.
KDF-42WE655/50WE655 1-5. POWER SUPPLY BLOCK REMOVAL (LAMP DRIVE UNIT) CAUTION: When removing the Power Supply Block be careful not to move the Optical Unit Block Unhook the antenna cable Pull forward to remove Two screws (+PWH 4x16) (to detach the cables from the...
KDF-42WE655/50WE655 1-7. U BOARD REMOVAL U board Gently pull back on tab to release U board 1-8. F BOARD AND G1 BOARD BOARD REMOVAL Disconnect two connectors (CN1603 & CN1604) G1 board Remove wires from purse locks Disconnect two connectors...
KDF-42WE655/50WE655 1-9. A BOARD AND KD BOARD REMOVAL Disconnect three connectors (CN4701, CN4705, and CN4702) Disconnect three connectors (CN8003, CN8004, and CN8008) and coax cable from tuner Unfasten two Circuit Board Supports Gently pull back on the three clips on the Pin Connection slots...
KDF-42WE655/50WE655 1-11. G2 BOARD REMOVAL Disconnect 6 connectors (CN6000, CN6024, CN6028, CN6021, CN6023, and CN6022) Disconnect 2 ground wires (CN6013 and CN6015) Lift the G2 Board out of the Main Bracket 1-12. T BOARD REMOVAL T board One screw (+BVTP 3x12)
KDF-42WE655/50WE655 1-14. H3 BOARD REMOVAL (KDF-42WE655 ONLY) H3 board Disconnect two connectors and one ground wire Spring plate H3 bracket Two screws (+BVTP 3x12) 1-15. FRONT COVER ASSEMBLY REMOVAL 1 Two ornamental screws Front cover assembly Four latches 1-15-1.REPLACING THE LAMP For detailed instructions on replacing the lamp, see Page 16 of the Operating Instructions manual.
KDF-42WE655/50WE655 1-16. HM BOARD REMOVAL (KDF-42WE655 ONLY) H2 block assembly Two screws (+BVTP 4x16) Disconnect two connectors MS panel Two screws (+BVTP 4x16) HM board 1-17. H3 BOARD AND HM BOARD REMOVAL (KDF-50WE655 ONLY) Note: To remove the HM Board you need to remove the screws inside the Bottom Cabinet Assembly...
KDF-42WE655/50WE655 1-20. SCREEN MIRROR BLOCK ASSEMBLY REMOVAL Caution: When repairing anything inside the Screen Mirror Block Assembly be sure to clean the mirror and Diffusion Plate to remove any dust particles. Note: For the model 50WE655, remove the screws that secure the reinfocement plates (R)/(L).
KDF-42WE655/50WE655 1-21. MIRROR COVER ASSEMBLY AND SPEAKER REMOVAL Two Screws (+BVTP 4X16) Two Screws (+BVTP 4X16) Fourteen Screws (+BVTP 4X16) 1-21-1.DIFFUSION PLATES (SCREENS) TAPE METHOD The following diagram illustrates the taping method when replacing the Diffusion Plates. For Part Numbers refer to section 6-1. Cover.
KDF-42WE655/50WE655 WIRE DRESSING [F] EMI Shield wire around 2nd post Make sure purse lock is completely seated to [G1] Tie btwn 1st & 2nd posts USB cable must stay to right Blk/Wht to the right side of [B] [KD] wires are secured to free...
Page 25
KDF-42WE655/50WE655 Detail of front side ATSC Box - LVDS Cables dresses behind [C1] LVDS dressing purse lock Emi Tape added to Sub Tuner cable Detail of front side ATSC Box Top connector wires must be to Detail of front side [G1] -...
Page 26
KDF-42WE655/50WE655 Sensor wire should be in left Tape must avoid OP Block Label three purse locks Purse Lock must be to the right of Loop sensor wire at the 2nd purse the cable tie position lock position Clip position move to avoid wire...
Page 27
KDF-42WE655/50WE655 Right Side Coated Lead Pins details Twist Coated Lead inward to avoid contact with fan assembly after installation KDF-42WE655/50WE655...
KDF-42WE655/50WE655 SECTION 2: CIRCUIT ADJUSTMENTS 2-1. SETTING THE SERVICE ADJUSTMENT SERVICE MENUS MODE (CATEGORIES ONLY) WEM 2 PANEL To adjust various set features, use the Remote Commander to put the Q BOX (WEGA ENGINE) (DISPLAY ENGINE) set into service mode to display the service menus.
KDF-42WE655/50WE655 2-3. MEMORY WRITE CONFIRMATION METHOD 1. After completing all adjustments turn the set off with the Remote Commander and WAIT for the fans to turn off before proceeding to the next step. Note: It may take up to two minutes for the fans to stop.
KDF-42WE655/50WE655 2-5. H/V CENTER CONFIRMATION AND ADJUSTMENTS Please check the picture horizontal/vertical center after the replacement of the Optics Unit Block Assembly or any part of the Top assembly. 1. Check the H/V center with 480i monoscope signal in “Full” mode.
A complete set of the service data, Fixed and Adjustable, can be downloaded at: http://www-ec.sdp.sel.sony.com/padics/Model_Data_List.htm Only Sony authorized Service Technician can access this site. To request a complete list of the service data in PDF format please contact the Service Promotion Department at Service_Promotion@am.sony.com.
KDF-42WE655/50WE655 SECTION 3: DIAGRAMS 3-1. CIRCUIT BOARDS LOCATION Q Box C (Part of Optics Unit Block Assembly Assembly Cannot be ordered separately) Power supply block RF antenna switch 3-2. PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS INFORMATION All capacitors are in µF unless otherwise noted. pF : µµF 50WV or All voltages are in V.
Page 35
KDF-42WE655/50WE655 REFERENCE INFORMATION Terminal name of semiconductors in silk screen printed circuit ( RESISTOR : RN METAL FILM Circuit Device Printed symbol Terminal name Collector : RC SOLID Transistor : FPRD NONFLAMMABLE CARBON Emitter Base : FUSE NONFLAMMABLE FUSIBLE Collector...
KDF-42WE655/50WE655 G2 BOARD SCHEMATIC DIAGRAM (1 OF 2) TO H1:CN171 TO DIGITAL BOX TO C:CN2603 TO LAMP AND H3 CN44 TO H2:CN4502 TO HM:CN7205 TO C:CN2602 CN6021 CN6023 CN6024 CN6022 CN6028 B26B-PHDSS — R6191 R6188 1608 :CHIP 1608 TO A:CN8005...
KDF-42WE655/50WE655 T BOARD SCHEMATIC DIAGRAM [VIDEO 2 INPUT] COMPONENT SIDE CN8001 3P-L S8001 :S-MICRO LAMP COV ² TO G2: CN6022 9-965-971-01<LA3>T [LAMP DOOR SWITCH] COMPONENT SIDE [VIDEO 2 INPUT] CONDUCTOR SIDE [LAMP DOOR SWITCH] CONDUCTOR SIDE KDF-42WE655/50WE655...
NOTE: Les composants identifi es per un trame et une marque sont critiques pour Replace only with part number specifi ed. la securite. Ne les remplacer que par une piece portant le numero specifi e. 4-2. BOTTOM CABINET (KDF-42WE655 ONLY) REF. NO. PART NO. DESCRIPTION [ASSEMBLY INCLUDES] REF.
KDF-42WE655/50WE655 NOTE: The components identifi ed by shading and mark are critical for safety. NOTE: Les composants identifi es per un trame et une marque sont critiques pour Replace only with part number specifi ed. la securite. Ne les remplacer que par une piece portant le numero specifi e.
KDF-42WE655/50WE655 NOTE: The components identifi ed by shading and mark are critical for safety. NOTE: Les composants identifi es per un trame et une marque sont critiques pour Replace only with part number specifi ed. la securite. Ne les remplacer que par une piece portant le numero specifi e.
KDF-42WE655/50WE655 SECTION 5: ELECTRICAL PARTS LIST NOTE: The components identifi ed by shading RESISTORS Items marked with an asterisk are not stocked since they mark are critical for safety. Replace only • All resistors are in ohms are seldom required for routine service. Expect some delay with part number specifi...
Page 79
KDF-42WE655/50WE655 REF. NO. PART NO. DESCRIPTION VALUES REF. NO. PART NO. DESCRIPTION VALUES R9428 1-216-864-11 SHORT CHIP C8031 1-162-966-11 CERAMIC CHIP 0.0022µF 10% R9429 1-216-864-11 SHORT CHIP C8032 1-117-681-11 ELECT CHIP 100µF R9430 1-216-864-11 SHORT CHIP C8033 1-162-966-11 CERAMIC CHIP 0.0022µF 10%...
Page 84
KDF-42WE655/50WE655 REF. NO. PART NO. DESCRIPTION VALUES REF. NO. PART NO. DESCRIPTION VALUES R8021 1-216-853-11 METAL CHIP 470K 1/10W R8074 1-218-889-11 METAL CHIP 0.50% 1/10W R8022 1-216-853-11 METAL CHIP 470K 1/10W R8075 1-216-829-11 METAL CHIP 4.7K 1/10W R8023 1-216-821-11 METAL CHIP...
Page 85
KDF-42WE655/50WE655 REF. NO. PART NO. DESCRIPTION VALUES REF. NO. PART NO. DESCRIPTION VALUES R8126 1-216-825-11 METAL CHIP 2.2K 1/10W R8207 1-216-837-11 METAL CHIP 1/10W R8127 1-216-801-11 METAL CHIP 1/10W R8208 1-216-857-11 METAL CHIP 1/10W R8128 1-216-801-11 METAL CHIP 1/10W R8209...
Page 86
KDF-42WE655/50WE655 REF. NO. PART NO. DESCRIPTION VALUES REF. NO. PART NO. DESCRIPTION VALUES R8260 1-218-676-11 METAL CHIP 0.50% 1/10W R8334 1-216-864-11 SHORT CHIP R8261 1-218-676-11 METAL CHIP 0.50% 1/10W R8336 1-216-839-11 METAL CHIP 1/10W R8262 1-218-676-11 METAL CHIP 0.50% 1/10W...
Page 87
KDF-42WE655/50WE655 REF. NO. PART NO. DESCRIPTION VALUES REF. NO. PART NO. DESCRIPTION VALUES R8440 1-216-825-11 METAL CHIP 2.2K 1/10W R8584 1-216-825-11 METAL CHIP 2.2K 1/10W R8441 1-216-833-11 METAL CHIP 1/10W R8585 1-216-828-11 METAL CHIP 3.9K 1/10W R8442 1-216-825-11 METAL CHIP 2.2K...
Page 88
KDF-42WE655/50WE655 NOTE: Les composants identifi es per un trame et une NOTE: The components identifi ed by shading marque sont critiques pour la securite. Ne les mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e.
Page 89
KDF-42WE655/50WE655 F G1 NOTE: Les composants identifi es per un trame et une NOTE: The components identifi ed by shading marque sont critiques pour la securite. Ne les mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e.
Page 90
KDF-42WE655/50WE655 NOTE: Les composants identifi es per un trame et une NOTE: The components identifi ed by shading marque sont critiques pour la securite. Ne les mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e.
Page 91
KDF-42WE655/50WE655 NOTE: Les composants identifi es per un trame et une NOTE: The components identifi ed by shading marque sont critiques pour la securite. Ne les mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e.
Page 92
KDF-42WE655/50WE655 NOTE: Les composants identifi es per un trame et une NOTE: The components identifi ed by shading marque sont critiques pour la securite. Ne les mark are critical for safety. Replace only remplacer que par une piece portant le numero specifi e.
Page 94
KDF-42WE655/50WE655 REF. NO. PART NO. DESCRIPTION VALUES REF. NO. PART NO. DESCRIPTION VALUES Q6914 8-729-216-22 TRANSISTOR 2SA1162-G R6054 1-216-864-11 SHORT CHIP Q6915 8-729-422-33 TRANSISTOR 2SD601A-Q-TX R6055 1-216-824-11 METAL CHIP 1.8K 1/10W Q6916 8-729-422-33 TRANSISTOR 2SD601A-Q-TX R6057 1-218-716-11 METAL CHIP 0.50% 1/10W...
Page 95
KDF-42WE655/50WE655 REF. NO. PART NO. DESCRIPTION VALUES REF. NO. PART NO. DESCRIPTION VALUES R6122 1-216-864-11 SHORT CHIP R6217 1-216-864-11 SHORT CHIP R6123 1-216-864-11 SHORT CHIP R6218 1-216-864-11 SHORT CHIP R6126 1-216-864-11 SHORT CHIP R6219 1-216-864-11 SHORT CHIP R6127 1-216-864-11 SHORT CHIP...
Page 96
KDF-42WE655/50WE655 REF. NO. PART NO. DESCRIPTION VALUES REF. NO. PART NO. DESCRIPTION VALUES R6915 1-216-801-11 METAL CHIP 1/10W R6967 1-216-801-11 METAL CHIP 1/10W R6918 1-216-833-11 METAL CHIP 1/10W R6968 1-216-813-11 METAL CHIP 1/10W R6919 1-216-833-11 METAL CHIP 1/10W R6970 1-216-809-11...
Page 99
KDF-42WE655/50WE655 REF. NO. PART NO. DESCRIPTION VALUES REF. NO. PART NO. DESCRIPTION VALUES L4715 1-414-487-41 INDUCTOR 1µH R4733 1-216-864-11 SHORT CHIP L4716 1-456-813-11 COIL, AIR-CORE R4734 1-218-708-11 METAL CHIP 4.7K 0.50% 1/10W L4717 1-469-555-21 INDUCTOR 10µH R4735 1-216-821-11 METAL CHIP...
Page 100
KDF-42WE655/50WE655 KD P REF. NO. PART NO. DESCRIPTION VALUES REF. NO. PART NO. DESCRIPTION VALUES R4789 1-216-864-11 SHORT CHIP R4853 1-216-809-11 METAL CHIP 1/10W R4791 1-216-864-11 SHORT CHIP R4854 1-216-864-11 SHORT CHIP R4792 1-216-818-11 METAL CHIP 1/10W R4858 1-216-833-11 METAL CHIP...
Page 121
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...