XBR-49/55/65/75X900E
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 or F6xx
Is fuse OK?
Check Vcc voltage
C4xx or C6xx
Is voltage >12.0V?
1) Check POWER_ON P-on ucom #pin10
(Refer No Power U-Com Failure)
2) Check G* board
3) Check IC9000 on JK* (only AC-ADP Models)
no
yes
yes
IC Ref
Voltage supply
IC402
+5.05V_MAIN
IC403
+3.3V_STBY
(AC-ADP only)
/+3.3V_MAIN
IC405
+1.8V_TU/+1.8V_BE
IC404
+1.0V_BE
IC409
+1.5V_FRC
IC410
+0.95V_FRC
IC604
+1.0V_M2
Check Enable pin
voltage
Is voltage >3V?
No Power U-Com Failure
or
Enable source
no
START
yes
Change LDO IC
Check Vcc voltage
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)
Summary of Contents for BRAVIA XBR-49X900E
Page 52: ...XBR 49 55 65 75X900E TROUBLE SHOOTING BMKS A side view PCB PARTS MAP 52 ...
Page 53: ...XBR 49 55 65 75X900E TROUBLE SHOOTING BMKS B side view PCB PARTS MAP 53 ...
Page 75: ...XBR 49 55 65 75X900E DISASSEMBLY 1 13 WIRE DRESSING 1 XBR 55X900E 75 1 3 4 2 ...
Page 101: ...XBR 49 55 65 75X900E DISASSEMBLY 1 38 LD35 1 XBR 55X900E 101 1 2 LD35 ...
Page 108: ...XBR 49 55 65 75X900E DISASSEMBLY 2 8 TAPE 2 XBR 65X900E 108 1 NOTE 2 3 TAPE TAPE TAPE ...
Page 113: ...XBR 49 55 65 75X900E DISASSEMBLY 2 13 WIRE DRESSING 2 XBR 65X900E 113 1 3 4 2 ...
Page 121: ...XBR 49 55 65 75X900E DISASSEMBLY 2 21 TAPE 2 XBR 65X900E 121 1 NOTE 2 3 4 TAPE TAPE TAPE TAPE ...
Page 138: ...XBR 49 55 65 75X900E DISASSEMBLY 2 37 LD45 2 XBR 65X900E 138 1 1 2 LD45 ...
Page 153: ...XBR 49 55 65 75X900E DISASSEMBLY 4 13 WIRE DRESSING 4 XBR 75X900E 153 1 3 2 ...
Page 154: ...XBR 49 55 65 75X900E DISASSEMBLY 4 14 WIRE DRESSING 4 XBR 75X900E 154 1 3 2 ...
Page 187: ...XBR 49 55 65 75X900E DISASSEMBLY 5 7 TAPE 5 XBR 49X900E 187 NOTE TAPE TAPE TAPE 1 2 3 4 TAPE ...
Page 188: ...XBR 49 55 65 75X900E DISASSEMBLY 5 8 TAPE 5 XBR 49X900E 188 NOTE 1 2 3 4 TAPE TAPE TAPE TAPE ...
Page 192: ...XBR 49 55 65 75X900E DISASSEMBLY 5 12 WIRE DRESSING 5 XBR 49X900E 192 1 2 3 ...
Page 218: ...XBR 49 55 65 75X900E DISASSEMBLY 5 37 LD30 5 XBR 49X900E 218 1 LD30 2 ...