XBR-55/65/77A1E
TROUBLE SHOOTING
FLOW
1-1. NO POWER
21
No Power
Check STBY 3.3V
C409
near CN401
on BKA board
Harness
G* Board
Replace
Between G* Board to
BKA board Harness
BKA Board
NG
OK
NG
OK
u-Com Failure
DDCON/LDO
Main Device Failure
1-2. NO POWER U-COM FAILURE
START
Continue next page…
yes
Check POWER_ON
R526 or P-on ucom #pin10
Is the voltage >3.0V?
Try AC Off and On after few minutes.
If #pin10 keep Low, change IC401.
If #pin10 goes High few seconds and downs to Low,
Check +12V_MAIN Line (G board ).
no
yes
Check VDD
C506 Voltage.
Is the voltage >3.0V?
Check +3.3V_STBY Line (C521, CN401 #7pin)
no
Check TYPE_DET
CL403 Voltage.
Is the voltage 3.3
±
0.2V?
no
yes
Check OPWRSB
R443 Voltage.
Is the voltage 0V?
SOC
Muffin 2
problem
no
yes
Type Detection Circuit problem.
Check TYPE_DET Line (R445).
Summary of Contents for Bravia XBR-55A1E
Page 80: ...XBR 55 65 77A1E DISASSEMBLY 1 17 WIRE DRESSING AND TAPE 1 XBR 55A1E 80 NOTE TAPE 1 2 ...
Page 86: ...XBR 55 65 77A1E DISASSEMBLY 1 23 SHEET STUD SUPPORT HKS 1 XBR 55A1E 86 SHEET STUD SUPPORT HKS ...
Page 92: ...XBR 55 65 77A1E DISASSEMBLY 1 29 FLAT CLAMP S 1 XBR 55A1E 92 1 2 FLAT CLAMP S NOTE ...
Page 94: ...XBR 55 65 77A1E DISASSEMBLY 1 31 WIRE DRESSING AND TAPE 1 XBR 55A1E 94 NOTE 1 2 3 4 TAPE TAPE ...
Page 96: ...XBR 55 65 77A1E DISASSEMBLY 1 33 WIRE DRESSING AND TAPE 1 XBR 55A1E 96 NOTE 1 2 3 4 TAPE ...
Page 97: ...XBR 55 65 77A1E DISASSEMBLY 1 34 TAPE 1 XBR 55A1E 97 NOTE 1 2 3 4 TAPE TAPE TAPE TAPE ...
Page 99: ...XBR 55 65 77A1E DISASSEMBLY 1 36 WIRE DRESSING 1 XBR 55A1E 99 NOTE 1 2 3 ...
Page 102: ...XBR 55 65 77A1E DISASSEMBLY 1 38 WIRE DRESSING 1 XBR 55A1E 102 1 3 2 ...
Page 106: ...XBR 55 65 77A1E DISASSEMBLY 1 42 FLAT CLAMP L 1 XBR 55A1E 106 NOTE FLAT CLAMP L 1 2 ...
Page 138: ...XBR 55 65 77A1E DISASSEMBLY 2 18 WIRE DRESSING AND TAPE 2 XBR 65A1E 138 NOTE 1 2 TAPE ...
Page 151: ...XBR 55 65 77A1E DISASSEMBLY 2 31 FLAT CLAMP S 2 XBR 65A1E 151 1 2 NOTE FLAT CLAMP S ...
Page 154: ...XBR 55 65 77A1E DISASSEMBLY 2 34 WIRE DRESSING AND TAPE 2 XBR 65A1E 154 NOTE 1 2 3 4 5 TAPE ...
Page 155: ...XBR 55 65 77A1E DISASSEMBLY 2 35 TAPE 2 XBR 65A1E 155 NOTE 1 2 3 4 TAPE TAPE TAPE TAPE ...
Page 157: ...XBR 55 65 77A1E DISASSEMBLY 2 37 WIRE DRESSING 2 XBR 65A1E 157 NOTE 1 2 3 ...
Page 160: ...XBR 55 65 77A1E DISASSEMBLY 2 39 WIRE DRESSING 2 XBR 65A1E 160 1 3 2 ...
Page 199: ...XBR 55 65 77A1E DISASSEMBLY 4 16 TAPE 4 XBR 77A1E 199 NOTE 1 2 TAPE TAPE ...
Page 200: ...XBR 55 65 77A1E DISASSEMBLY 4 17 TAPE 4 XBR 77A1E 200 1 2 3 TAPE TAPE TAPE NOTE ...
Page 201: ...XBR 55 65 77A1E DISASSEMBLY 4 18 TAPE AND WIRE DRESSING 4 XBR 77A1E 201 1 NOTE TAPE 2 3 ...
Page 213: ...XBR 55 65 77A1E DISASSEMBLY 4 30 FLAT CLAMP S 4 XBR 77A1E 213 1 2 NOTE FLAT CLAMP S ...
Page 215: ...XBR 55 65 77A1E DISASSEMBLY 4 32 WIRE DRESSING AND TAPE 4 XBR 77A1E 215 NOTE 1 2 3 TAPE ...
Page 222: ...XBR 55 65 77A1E DISASSEMBLY 4 38 WIRE DRESSING 4 XBR 77A1E 222 ...
Page 227: ...XBR 55 65 77A1E DISASSEMBLY 4 43 SLIDE CLAMP 4 XBR 77A1E 227 1 2 SLIDE CLAMP 1 2 SLIDE CLAMP ...
Page 260: ...XBR 55 65 77A1E APPENDIX 4 How to Assemble SIL Tuner 260 ...