Sony KD-43X7 H Series Service Manual page 43

2020/12/12 02:35:59 (GMT+09:00)
BKR Board Model
Board Operation
BKR LDO
SAFETY NOTES SELF DIAGNOSTIC FUNCTION
T R O U B L E S H O O T I N G
IC Ref Voltage supply
IC5505 3.3V_Main (SoC)
IC6508 1.0V_STBY_ETH
IC6506 1.8V_EMMC_SOC
IC6507 1.8V_EMMC
TROUBLESHOOTING
S E C T I O N 3
LDOs check
START
yes
no
Check Vin voltage
C5xxx/C6xxx
Is voltage >3V?
yes
no
Check Enable pin
voltage
Is voltage >3V?
yes
Change LDO IC
SERVICE ADJUSTMENT
Please refer page-34 for Ref number.
Check 3.3V_DDC_OUT for C6xxx
(IC6010)
&
5V_Audio for C5xxx
(IC6009)
1.2 No Power U-Com Failure
or
Enable source
DIAGRAMS PANEL HANDLING
43
FACTORY DATA RESET
SYS SET