XBR-55/65X930D, 65X935D/937D, 75X940D
22
TROUBLE SHOOTING
FLOW
1-2-1. NO POWER U-COM FAILURE
START
Check
C9129
Voltage.
Is the voltage >3.0V?
Check OPWRSB
R9179
Voltage.
Is the voltage 0V?
Check DC_OFF_DET
IC9000
no
yes
yes
Check P_ON_LNB
IC9017 #pin15
Is the voltage >3.0V?
Change IC9017
no
yes
Check MAIN_VCC
R9175
Voltage.
Is the voltage >1.6V?
Check 12.5V Line
(G board or IC403 on DPS).
no
yes
Check P_ON_VBUS
IC9017 #pin11
is >3.0V?
Change IC9017
no
yes
yes
Change IC9017
no
Check P_ON_#1
IC9017 #pin13
is >3.0V?
Check PGOOD_1
R9173
Voltage.
Is the voltage >3.0V?
1-3 No POWER - DDCON/LDO
Check 1.0V DDCON (IC9008)
no
Continue next page…
Check
C9117
Voltage.
Is the voltage >3.0V?
Check +3.3V_STBY
C9006, CN9000 #24pin
no
Check POWER_ON
IC9017 #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 12.5V Line (G board or IC403 on DPS).
no
yes
SOC
Muffin
problem
no
yes
yes
Summary of Contents for BRAVIA XBR-55X930D
Page 61: ...XBR 55 65X930D 65X935D 937D 75X940D 61 DIAGRAMS BLOCK DIAGRAM Common for all inches ...
Page 85: ...XBR 55 65X930D 65X935D 937D 75X940D 85 DISASSEMBLY 1 6 CATCHER 1 XBR 55X930D CATCHER ...
Page 93: ...XBR 55 65X930D 65X935D 937D 75X940D 93 DISASSEMBLY 1 14 WIRE DRESSING 1 XBR 55X930D ...
Page 187: ...XBR 55 65X930D 65X935D 937D 75X940D 187 DISASSEMBLY 4 19 WIRE DRESSING 4 XBR 75X940D 1 2 ...
Page 193: ...XBR 55 65X930D 65X935D 937D 75X940D 193 DISASSEMBLY 4 25 WIRE DRESSING 4 XBR 75X940D NOTE ...
Page 195: ...XBR 55 65X930D 65X935D 937D 75X940D 195 DISASSEMBLY 4 27 WIRE DRESSING 4 XBR 75X940D 1 2 ...
Page 215: ...XBR 55 65X930D 65X935D 937D 75X940D 215 DISASSEMBLY 4 XBR 75X940D 4 47 LCD PANEL LCD PANEL ...