XBR-55/65X900E
TROUBLE SHOOTING
FLOW
1-3. NO POWER DDCON/LDO
DDCONs CHECK
23
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 to 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 X900E Series
Page 66: ...XBR 55 65X900E DISASSEMBLY 1 8 TAPE 1 XBR 55X900E 66 1 2 3 4 5 NOTE TAPE TAPE TAPE TAPE TAPE ...
Page 67: ...XBR 55 65X900E DISASSEMBLY 1 9 TAPE AND WIRE DRESSING 1 XBR 55X900E 67 1 2 NOTE 3 4 TAPE TAPE ...
Page 69: ...XBR 55 65X900E DISASSEMBLY 1 11 TAPE AND WIRE DRESSING 1 XBR 55X900E 69 NOTE 1 2 3 TAPE TAPE ...
Page 71: ...XBR 55 65X900E DISASSEMBLY 1 13 WIRE DRESSING 1 XBR 55X900E 71 1 3 4 2 ...
Page 79: ...XBR 55 65X900E DISASSEMBLY 1 21 TAPE 1 XBR 55X900E 79 1 TAPE NOTE 2 TAPE 3 TAPE TAPE 4 TAPE ...
Page 81: ...XBR 55 65X900E DISASSEMBLY 1 23 SLIDE CLAMP 1 XBR 55X900E 81 SLIDE CLAMP SLIDE CLAMP ...
Page 82: ...XBR 55 65X900E DISASSEMBLY 1 24 BRACKET SIDE SBT 1 XBR 55X900E 82 1 3 2 BRACKET SIDE SBT ...
Page 97: ...XBR 55 65X900E DISASSEMBLY 1 38 LD35 1 XBR 55X900E 97 1 2 LD35 ...
Page 104: ...XBR 55 65X900E DISASSEMBLY 2 8 TAPE 2 XBR 65X900E 104 1 NOTE 2 3 TAPE TAPE TAPE ...
Page 109: ...XBR 55 65X900E DISASSEMBLY 2 13 WIRE DRESSING 2 XBR 65X900E 109 1 3 4 2 ...
Page 117: ...XBR 55 65X900E DISASSEMBLY 2 21 TAPE 2 XBR 65X900E 117 1 NOTE 2 3 4 TAPE TAPE TAPE TAPE ...
Page 119: ...XBR 55 65X900E DISASSEMBLY 2 23 SLIDE CLAMP 2 XBR 65X900E 119 SLIDE CLAMP SLIDE CLAMP ...
Page 120: ...XBR 55 65X900E DISASSEMBLY 2 24 BRACKET SIDE SBT 2 XBR 65X900E 120 1 3 2 BRACKET SIDE SBT ...
Page 134: ...XBR 55 65X900E DISASSEMBLY 2 37 LD45 2 XBR 65X900E 134 1 1 2 LD45 ...
Page 135: ...XBR 55 65X900E DISASSEMBLY 3 1 COVER TOP FRE 3 SMART CORE S COVER TOP FRE 1 3 2 135 Hook ...