XBR-65/75X850E
TROUBLE SHOOTING
FLOW
1-2. NO POWER U-COM FAILURE
20
START
(only for AC-ADP model)
Check TYPE_DET
C503 Voltage.
Is the voltage 0V?
Type Detection Circuit problem.
Check TYPE_DET Line (R521, R522, R523).
Check Power supply harness (CN400 #9pin,10pin).
no
yes
Check POWER_ON
R526 or P-on ucom #pin10
Is the voltage >3.0V?
Try AC Off and On after few minutes.
If #pin19 keep Low, change IC401.
If #pin19 goes High few seconds and downs to Low,
Check +12V_MAIN Line (G board or JK board).
no
yes
Check 12V_MON
R446 Voltage.
Is the voltage >2.6V?
Check +12V_MAIN Line
(G board or JK board).
no
yes
(only for AC-ADP model)
Check DC_MON
R439 Voltage.
Is the voltage >1.8V?
Check POWER_MAIN Line
(JK board).
no
yes
yes
Change IC401
no
Check DC_OFF_DET
R448 or P-on ucom #pin3
is >3.0V?
Check P_ON_#1
CL418 or P-on ucom #pin12
is >3.0V?
Change IC401
no
Continue next page…
Check VDD
C506 Voltage.
Is the voltage >3.0V?
Check +3.3V_STBY LIne (C521, CN400 #14pin)
And (only for AC-ADP model)
3.3V_DDCON (IC403)
no
(only for G-board model)
Check TYPE_DET
C503 Voltage.
Is the voltage 2.6
±
0.2V?
no
yes
yes
Check OPWRSB
R443 Voltage.
Is the voltage 0V?
SOC
Muffin 2
problem
no
yes
Check PGOOD_1
R440 Voltage.
Is the voltage >3.0V?
No POWER - DDCON/LDO
Check 1.0V DDCON (IC604)
And (only for AC-ADP model)
12V DDCON (IC9000 on JK).
no
yes
Type Detection Circuit problem.
Check TYPE_DET Line (R521, R522, R523).
Check Power supply harness (CN400 #9pin,10pin).
yes
Summary of Contents for BRAVIA XBR-65X850E
Page 61: ...XBR 65 75X850E DISASSEMBLY 1 6 TAPE 1 XBR 65X850E 61 TAPE TAPE ...
Page 62: ...XBR 65 75X850E DISASSEMBLY 1 7 TAPE 1 XBR 65X850E 62 TAPE TAPE TAPE ...
Page 64: ...TAPE TAPE XBR 65 75X850E DISASSEMBLY 1 9 TAPE 1 XBR 65X850E 64 ...
Page 65: ...TAPE XBR 65 75X850E DISASSEMBLY 1 10 TAPE AND WIRE DRESSING 1 XBR 65X850E 65 TAPE ...
Page 68: ...XBR 65 75X850E DISASSEMBLY 1 13 WIRE DRESSING 1 XBR 65X850E 68 1 2 3 ...
Page 76: ...XBR 65 75X850E DISASSEMBLY 1 21 SLIDE CLAMP 1 XBR 65X850E 76 1 2 1 2 SLIDE CLAMP SLIDE CLAMP ...
Page 77: ...XBR 65 75X850E DISASSEMBLY 1 22 BRACKET SIDE SBT M 1 XBR 65X850E 77 1 3 2 BRACKET SIDE SBT M ...
Page 87: ...XBR 65 75X850E DISASSEMBLY 2 2 COVER TOP FRE 2 SMART CORE H65 87 1 NOTE 2 3 4 COVER TOP FRE ...
Page 94: ...XBR 65 75X850E DISASSEMBLY 3 6 TAPE 3 XBR 75X850E 94 TAPE TAPE TAPE TAPE ...
Page 97: ...XBR 65 75X850E 3 9 TAPE 3 XBR 75X850E 97 TAPE TAPE TAPE DISASSEMBLY ...
Page 99: ...XBR 65 75X850E 3 11 WIRE DRESSING 3 XBR 75X850E 99 DISASSEMBLY ...
Page 100: ...XBR 65 75X850E 3 12 WIRE DRESSING 3 XBR 75X850E 100 1 2 DISASSEMBLY ...
Page 106: ...XBR 65 75X850E DISASSEMBLY 3 18 TAPE 3 XBR 75X850E 106 1 TAPE TAPE TAPE TAPE NOTE 2 ...
Page 119: ...XBR 65 75X850E DISASSEMBLY 4 2 COVER TOP FRE 4 SMART CORE H 119 1 2 3 4 COVER TOP FRE NOTE ...