Sony KD-43X85K Manual page 29

2022/04/19 01:21:05 (GMT+09:00)
TROUBLESHOOTING
1.3 No Power DDCON/LDO (DDCON Check)
START
Check fuse
F6xx/F8xx
Is fuse OK?
yes
Check Vcc voltage
C4xx / C6xx/C8xx
Is voltage >12.0V?
yes
Check Enable pin
voltage
Is voltage >2.5V?
yes
Change DDCON IC
SAFETY NOTES
Pleas refer page 27 for Ref number.
no
Change Fuse
1) Check POWER_ON
no
P-on u-com IC401 #pin10
(Refer 1.2 No Power U-Com Failure)
2) Check Power board
1.2 No Power U-Com Failure
no
or
Enable source
SELF DIAGNOSIS FUNCTION TROUBLESHOOTING
Check item summary
Board Operation IC Ref
DC/DC
DC/DC
DC/DC
DC/DC
BM5A
DC/DC
DC/DC
DC/DC
DC/DC
SERVICE ADJUSTMENT DIAGRAM
Voltage supply
IC414 5.0V_STBY_H
IC600 5V_MAIN/5V_AUDIO
IC607 3.3V_DDC_OUT
IC804 0.8V_M5_CORE
IC813 1.8V_M5
IC812 1.0V_M5
IC810 0.8V_M5_CPU
IC811 0.8V_M5_GPU
HANDLING GUIDE
SYS SET
29