Sony KD-43X85K Manual page 41

2022/04/19 01:21:05 (GMT+09:00)
TROUBLESHOOTING
1.3 No Power DDCON/LDO (LDO Check)
START
yes
Check Vcc voltage
C815
Is voltage >3.2V?
yes
Check Enable pin
voltage
Is voltage >3V?
yes
Change LDO IC
SAFETY NOTES
Check 3.3V_DDC_OUT
DDCON
no
(IC607 on BM5A)
or
3.3V_STBY (Power board)
1.2 No Power U-Com Failure
no
or
Enable source
SELF DIAGNOSIS FUNCTION TROUBLESHOOTING
Check item summary
Board Operation
BM5A LDO
SERVICE ADJUSTMENT DIAGRAM
IC Ref Voltage supply
IC809 3.3V_M5_STBY
HANDLING GUIDE
41
SYS SET