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HISTORY INFORMATION FOR THE FOLLOWING MANUAL:




SERVICE MANUAL
MODEL NAME REMOTE COMMANDER DESTINATION
LA-3 CHASSIS

KDF-42WE655 RM-Y915 US/CND

KDF-50WE655 RM-Y915 US/CND




ORIGINAL MANUAL ISSUE DATE: 9/2004

:CORRECTED ITEM
REVISION DATE REVISION TYPE SUBJECT

9/2004 No revisions or updates are applicable at this time.
10/2004 Updated Block Diagram (Replaced Page 36 with Page 36)
Updated PN for Power Supply Block, Added D.C. Fan (Sirocco) to Exploded View section
(Replaced Page 77 with Page 77)




LCD PROJECTION TELEVISION

9-965-971-02
Self Diagnosis
Supported model




SERVICE MANUAL
MODEL NAME REMOTE COMMANDER DESTINATION
LA-3 CHASSIS

KDF-42WE655 RM-Y915 US/CND

KDF-50WE655 RM-Y915 US/CND




KDF-42WE655 RM-Y915




LCD PROJECTION TELEVISION

9-965-971-02
KDF-42WE655/50WE655


TABLE OF CONTENTS

SECTION TITLE PAGE SECTION TITLE PAGE


Specifications ................................................................................. 4 SECTION 3: DIAGRAMS..................................................................... 34
Warnings and Cautions .................................................................. 6 3-1. Circuit Boards Location ........................................................ 34
Safety Check-Out ........................................................................... 7 3-2. Printed Wiring Boards and
Self-Diagnostic Function................................................................. 8 Schematic Diagrams Information ......................................... 34
3-3. Block Diagrams .................................................................... 36
SECTION 1: DISASSEMBLY............................................................... 13
3-4. Schematics and Supporting Information .............................. 37
1-1. Rear Cover Removal............................................................ 13
A Board Schematic Diagram (1 of 3).................................... 37
1-2. Center Pillar Removal .......................................................... 13
A Board Schematic Diagram (2 of 3).................................... 38
1-3. Service Position .................................................................. 14
A Board Schematic Diagram (3 of 3).................................... 39
1-4. Fan and Chassis Assembly Removal................................... 14
B Board Schematic Diagram (1 of 6) ................................... 42
1-5. Power Supply Block Removal (Lamp Drive Unit)................. 15
B Board Schematic Diagram (2 of 6) ................................... 43
1-6. Fan, RF Antenna Switch, and P Board Removal ................. 15
B Board Schematic Diagram (3 of 6) ................................... 44
1-7. U Board Removal................................................................. 16
B Board Schematic Diagram (4 of 6) ................................... 45
1-8. F Board and G1 Board Board Removal ............................... 16
B Board Schematic Diagram (5 of 6) ................................... 46
1-9. A Board and KD Board Removal.......................................... 17
B Board Schematic Diagram (6 of 6) ................................... 47
1-10. Q Box Assembly, and B Board Removal.............................. 17
G2 Board Schematic Diagram (1 of 2) ................................. 50
1-11. G2 Board Removal............................................................... 18
G2 Board Schematic Diagram (2 of 2) ................................. 51
1-12. T Board Removal ................................................................. 18
P Board Schematic Diagram ............................................... 54
1-13. Woofer Removal .................................................................. 18
KD Board Schematic Diagram ............................................. 55
1-14. H3 Board Removal (KDF-42WE655 Only)........................... 19
G1 Board Schematic Diagram (1 of 2) ................................. 57
1-15. Front Cover Assembly Removal........................................... 19
G1 Board Schematic Diagram (2 of 2) ................................. 58
1-15-1. Replacing the Lamp................................................. 19
F Board Schematic Diagram ................................................ 61
1-16. HM Board Removal (KDF-42WE655 Only).......................... 20
HM Board Schematic Diagram............................................. 63
1-17. H3 Board and HM Board Removal (KDF-50WE655 Only)... 20
H1 Board Schematic Diagram.............................................. 65
1-18. H2 Board Removal............................................................... 21
H2 Board Schematic Diagram.............................................. 67
1-19. H1 Board Removal............................................................... 21
H3 Board Schematic Diagram.............................................. 68
1-20. Screen Mirror Block Assembly Removal .............................. 22
T Board Schematic Diagram ................................................ 69
1-21. Mirror Cover Assembly and Speaker Removal .................... 23
U Board Schematic Diagram................................................ 70
1-21-1. Diffusion plates (Screens) Tape Method.................. 23
3-5. Semiconductors ................................................................... 72
Wire Dressing ............................................................................... 24
SECTION 4: EXPLODED VIEWS........................................................ 73
SECTION 2: CIRCUIT ADJUSTMENTS.............................................. 28
4-1. Cover.................................................................................... 73
2-1. Setting the Service Adjustment Mode .................................. 28
4-2. Bottom Cabinet (KDF-42WE655 Only) ................................ 74
2-2. Service Adjustment Mode Memory ...................................... 28
4-3. Bottom Cabinet (KDF-50WE655 Only) ................................ 75
2-3. Memory Write Confirmation Method .................................... 29
4-4. Chassis ................................................................................ 76
2-4. Remote Adjustment Buttons and Indicators ......................... 29
4-5. Optical Unit Block................................................................. 77
2-5. H/V Center Confirmation and Adjustments .......................... 30
2-6. Service Data......................................................................... 31 SECTION 5: ELECTRICAL PARTS LIST........................................... 78

2-7. ID Map Table ........................................................................ 33




KDF-42WE655/50WE655 3
KDF-42WE655/50WE655


SPECIFICATIONS

Power Requirements 120V AC, 60Hz Control S (IN)
Power Consumption (W) 230W 1 total
In Use (Max) Under 20W Minijack
In Standby HDMI IN Control S (OUT)
Inputs/Outputs Video - 1080i, 720p, 480p, 480i 1 total
Audio - Two channel linear PCM 32, 44.1 and 48 kHz, Minijack
16, 20, and 24 bit Component Video Input
Video (IN) 2 (Y, PB, PR)
4 total (1 on front panel) Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative
1Vp-p, 75ohms unbalanced, sync negative PB: 0.7 Vp-p, 75 ohms;
S Video (IN) PR: 0.7 Vp-p, 75 ohms
4 total (1 on front panel) RF Inputs
Y: 1Vp-p, 75ohms unbalanced, sync negative 2 total
C: 0.286Vp-p (Burst signal), 75ohms Digital Audio Optical Output (PCM/Dolby Digital)
Audio (IN) 1 total
7 total (1 on front panel) Optical Rectangular (1)
500 mVrms (100% modulation) CableCARD Slot
Impedance:47 kilo ohms 1 total
Audio (VAR/FIX) Out PCMCIA Type I/II
1 total
500 mVrms at the maximum volume setting (Variable)
500 mVrms (Fixed)
Impedance (Output):2 kilo ohm
Note: Audio Out jacks are operable only when
the TV's speaker is set to Off.




KDF-42WE655 KDF-50WE655

Speaker Output (W) 5W x 2
Woofer 20W
Dimensions (W x H x D)
mm 1,200 x 818 x 314 mm 1,376 x 927.2 x 379 mm
1/4 1/4 1/3
in 47 x 32 x 12 in 54 1/8 x 36 1/2 x 15 in
Mass
kg 32.5 kg 39 kg
lbs 71 lbs 10 oz 85 lbs 14 oz



CableCARDTM is a trademark of Cable Television This TV incorporates High-Definition
Laboratories, Inc. Multimedia Interface (HDMITM)
technology. HDMI, the HDMI logo
TruSurround, SRS and the ( )