Sony KD-43X85K Manual page 42

2022/04/19 01:21:05 (GMT+09:00)
TROUBLESHOOTING
1.3 No Power DDCON/LDO (LDO Check)
START
Check IC600 Vcc
voltage
C601
Is voltage >12V?
yes
Check Vcc voltage
C2214
Is voltage >4V?
yes
Check Enable
IC2201 #pin3
Is voltage >1.0V?
yes
Change LDO
IC2201
SAFETY NOTES
Pleas refer page 27 for Ref number.
Check Vcc voltage
no
C2214
Is voltage >3V?
yes
Check
no
D2201
Is diode okay?
yes
1.2 No Power u-Com Failure
no
or
Enable source
SELF DIAGNOSIS FUNCTION
no
Check
D2200 Is diode okay?
yes
no
Change D2201
Check 5V_MAIN DDCON (IC600)
TROUBLESHOOTING SERVICE ADJUSTMENT
Check item summary
Board Operation IC Ref
BM5A LDO IC2201
no
Change D2200
Check 3.3V_STBY.
Power board
DIAGRAM
Voltage supply
1.8V_EMMC
42
HANDLING GUIDE
SYS SET