XBR-55/65X930D, 65X935D/937D, 75X940D
33
TROUBLE SHOOTING
FLOW
3-2. NO SOUND (AUDIO)
No Sound
Audio
Replace B Board
Finish
Power Off Check
From 2-2
Measure the Speaker
impedance by multi-meter
Less than 3Ω ?
Confirm the speaker
harness
Cut or shorted
to the chassis ?
Replace Speaker
No
Yes
Replace Speaker Harness
No
Yes
Return to 2-2 or 3-1
Power Off Check
From 3-1
(1) B / DPS Board
PVDD-GND short ?
Replace B Board
No
Yes
(2) B / DPS Board
LDO out short ?
(3) B / DPS Board
Fuse broken ?
No
Yes
No
Yes
3-3. NO SOUND (POWER OFF CHECK)
(3) Fuse open check
Measure impedance of fuse
F7702 5A (12.5V or 19.5V)
If fuse open NG
(1) PVDD-GND short check
Measure impedance between PVDD and GND at
capacitor C7881.
If impedance is <100Ω NG
(2) LDO out short check
Measure impedance b3.3V and GND at C7880.
If impedance is <100Ω NG
BM1 Board
(3) Fuse open check
Measure impedance of fuse
F7700, F7701 5A (12.5V or 19.5V)
If fuse open NG
(1) PVDD-GND short check
Measure impedance between PVDD and GND at
capacitor C7932, C7914.
If impedance is <100Ω NG
(2) LDO out short check
Measure impedance b3.3V and GND at C7913,
C7931.
If impedance is <100Ω NG
DPS Board
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 ...