XBR-55/65X930E, 75X940E
TROUBLE SHOOTING
FLOW
1-3. NO POWER DDCON/LDO
DDCONs CHECK
25
Check Enable pin
voltage
Is voltage >2.5V?
No Power U-Com Failure
or
Enable source
Change Fuse
no
no
START
yes
Change DDCON IC
Check fuse
F4xx / F40xx/F6xx
Is fuse OK?
Check Vcc voltage
C4xx / C40xx/C6xx
Is voltage >12.0V?
no
yes
yes
1) Check POWER_ON P-on ucom #pin10
(Refer to No Power U-Com Failure)
2) Check G* board
3) Check IC9000 on JK* (only AC-ADP Models)
IC Ref
Voltage supply
IC402
+5.05V_MAIN
IC403
+3.3V_STBY
(AC-ADP only)
/+3.3V_MAIN
Q407
+3.3V_MAIN
IC405
+1.8V_TU
IC601
+1.5V_DDR
IC604
+1.0V_M2
IC4001
+1.5V_BE
IC4002
+1.1V_BE
IC4003
+1.0V_BE
Check Enable pin
voltage
Is voltage >3V?
No Power U-Com Failure
or
Enable source
no
START
yes
Change LDO IC
Check Vcc voltage
C4xxx or C6xx
Is voltage >3V?
Check +3.3V_DDC_OUT
DDCON (IC403)
or
+3.3V_STBY (G* board)
no
yes
LDOs CHECK
IC Ref
Voltage supply
IC602
+1.05V_M2_STBY
IC603
+1.05V_M2_A_1
IC605
+1.05V_M2_ST_ET
IC606
+1.05V_M2_A_2
IC607
VCC3IO_EMMC (1.8V)
IC4004
+1.8V_BE
Summary of Contents for BRAVIA XBR-75X940E
Page 72: ...XBR 55 65X930E 75X940E DISASSEMBLY 1 7 COVER BTM L PUC 1 XBR 55X930E 72 1 2 3 COVER BTM L PUC ...
Page 81: ...XBR 55 65X930E 75X940E DISASSEMBLY 1 16 TAPE 1 XBR 55X930E 81 TAPE TAPE 1 2 NOTE ...
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Page 99: ...XBR 55 65X930E 75X940E DISASSEMBLY 1 34 TAPE 1 XBR 55X930E 99 NOTE 1 2 3 TAPE TAPE TAPE ...
Page 133: ...XBR 55 65X930E 75X940E DISASSEMBLY 2 16 TAPE 2 XBR 65X930E 133 NOTE 1 TAPE TAPE TAPE 2 3 ...
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Page 182: ...XBR 55 65X930E 75X940E DISASSEMBLY 3 14 TAPE 3 XBR 75X940E 182 NOTE 1 2 3 TAPE TAPE TAPE ...
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Page 198: ...XBR 55 65X930E 75X940E DISASSEMBLY 3 30 TAPE 3 XBR 75X940E 198 NOTE 1 2 3 TAPE TAPE TAPE ...
Page 217: ...XBR 55 65X930E 75X940E DISASSEMBLY 3 48 FFC 75 3 XBR 75X940E 217 1 FFC 75 1 ...
Page 221: ...XBR 55 65X930E 75X940E DISASSEMBLY 3 52 WIRE DRESSING 3 XBR 75X940E 221 2 1 NOTE ...
Page 223: ...XBR 55 65X930E 75X940E DISASSEMBLY 3 54 CUSHION SPACER LD 3L PUC 3 XBR 75X940E 223 NOTE ...