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XBR-65X930C, 75X940C, 945C
131
TROUBLE SHOOTING
3-2-2. NO POWER-U-Com Failure (1/2)
START
Check R9186 Voltage.
Is the voltage >3.0V?
Check OPWRSB
R9179 Voltage.
Is the voltage 0V?
Check DC_OFF_DET
IC9018
No problem
TV set stays in
STBY MHL charge mode.
No
Yes
No
Yes
Check P_ON_LNB
P-on ucom #pin15
Is the voltage >3.0V?
Change IC9017
No
yes
Check MAIN_VCC
R9175 Voltage.
Is the voltage >1.6V?
G-Board
No
Yes
Check P_ON_VBUS
P-on ucom #pin11
is >3.0V?
Change IC9017
No
Yes
Yes
Change IC9017
No
Check P_ON_#1
P-on ucom #pin13
is >3.0V?
Check PGOOD_1
R9173 Voltage.
Is the voltage >3.0V?
No POWER - DDCON/LDO
Check 1.0V DDCON (IC9008)
No
Check C9117 Voltage.
Is the voltage >3.0V?
Check +3.3V_STBY
R9144, CN9000 #26pin
No
Check POWER_ON
P-on ucom #pin19
Is the voltage >3.0V?
Try AC Off and On after few minutes.
If #pin19 keep Low, change IC9017.
If #pin19 goes High few seconds and downs to Low,
Check G board and harness.
No
Yes
Check STBY_MHL
R9176 Voltage.
Is the voltage >3.0V?
Yes
SOC
Muffin
problem
No
Yes
A
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Summary of Contents for XBR-75X945C
Page 2: ...SERVICE MANUAL LCD TV 9 888 572 02 GN1T CHASSIS Segment XS ...
Page 19: ...XBR 65X930C 75X940C 945C 19 DISASSEMBLY 1 1 6 TAPE 1 1 XBR 65X930C TAPE TAPE TAPE TAPE ...
Page 20: ...XBR 65X930C 75X940C 945C 20 DISASSEMBLY 1 1 7 TAPE 1 1 XBR 65X930C TAPE TAPE TAPE TAPE TAPE ...
Page 21: ...XBR 65X930C 75X940C 945C 21 DISASSEMBLY 1 1 8 WIRE DRESSING 1 1 XBR 65X930C ...
Page 40: ...XBR 65X930C 75X940C 945C 40 DISASSEMBLY 1 1 27 TAPE 1 1 XBR 65X930C TAPE TAPE ...
Page 56: ...XBR 65X930C 75X940C 945C 56 DISASSEMBLY 1 1 43 LCD PANEL 1 1 XBR 65X930C LCD PANEL ...
Page 63: ...XBR 65X930C 75X940C 945C 63 DISASSEMBLY 1 2 6 TAPE 1 2 XBR 75X940C 945C TAPE TAPE TAPE ...
Page 64: ...XBR 65X930C 75X940C 945C 64 DISASSEMBLY 1 2 7 TAPE 1 2 XBR 75X940C 945C TAPE TAPE TAPE TAPE ...
Page 65: ...XBR 65X930C 75X940C 945C 65 DISASSEMBLY 1 2 8 TAPE 1 2 XBR 75X940C 945C TAPE TAPE TAPE TAPE ...
Page 66: ...XBR 65X930C 75X940C 945C 66 DISASSEMBLY 1 2 9 TAPE 1 2 XBR 75X940C 945C TAPE ...
Page 67: ...XBR 65X930C 75X940C 945C 67 DISASSEMBLY 1 2 10 TAPE 1 2 XBR 75X940C 945C TAPE TAPE TAPE ...
Page 69: ...XBR 65X930C 75X940C 945C 69 DISASSEMBLY 1 2 XBR 75X940C 945C 1 2 12 WIRE DRESSING ...
Page 70: ...XBR 65X930C 75X940C 945C 70 DISASSEMBLY 1 2 XBR 75X940C 945C 1 2 13 WIRE DRESSING ...
Page 71: ...XBR 65X930C 75X940C 945C 71 DISASSEMBLY 1 2 XBR 75X940C 945C 1 2 14 WIRE DRESSING ...
Page 94: ...XBR 65X930C 75X940C 945C 94 DISASSEMBLY 1 2 37 TAPE 1 2 XBR 75X940C 945C TAPE TAPE ...
Page 95: ...XBR 65X930C 75X940C 945C 95 DISASSEMBLY 1 2 38 TAPE 1 2 XBR 75X940C 945C TAPE TAPE ...
Page 111: ...XBR 65X930C 75X940C 945C 111 DISASSEMBLY 1 2 54 LCD PANEL 1 2 XBR 75X940C 945C LCD PANEL ...
Page 115: ...XBR 65X930C 75X940C 945C 115 DISASSEMBLY 1 3 5 COVER TOP 1 COVER TOP 2 1 3 SMART CORE ...
Page 117: ...XBR 65X930C 75X940C 945C 117 DISASSEMBLY 1 3 7 LIGHT GUIDE LIGHT GUIDE 1 2 3 1 3 SMART CORE ...
Page 119: ...XBR 65X930C 75X940C 945C 119 DISASSEMBLY 1 3 9 CASE BOTTOM L CASE BOTTOM L 1 3 SMART CORE ...
Page 173: ...XBR 65X930C 75X940C 945C 173 SEC 4 DIAGRAMS 4 1 1 UC 4 1 BLOCK DIAGRAM ...
Page 174: ...XBR 65X930C 75X940C 945C 174 DIAGRAMS 4 1 2 LA BR AR ...
Page 175: ...XBR 65X930C 75X940C 945C 175 DIAGRAMS 4 1 3 LA COL ...