Sony KD-43X7 H Series Service Manual page 35

2020/12/12 02:35:59 (GMT+09:00)
BKR Board Model
START
Check IC6009 Vin voltage
C6066
Is voltage >12V?
Check Vin voltage
C6040
Is voltage >4V?
Check Enable
IC6019 #pin1
Is voltage >2.5V?
Change DDCON
IC6004
SAFETY NOTES SELF DIAGNOSTIC FUNCTION
T R O U B L E S H O O T I N G
DDCON check
Check Vin voltage
no
Is voltage >3V?
yes
no
Is diode alive?
yes
no
yes
TROUBLESHOOTING
S E C T I O N 3
no
C6040
Is diode alive?
yes
Check no
D6002
yes
Check 5V_MAIN DDCON (IC6009)
Change IC6019
SERVICE ADJUSTMENT
IC Ref
IC6004
Check no
D6001
yes
Change D6002
DIAGRAMS PANEL HANDLING
Voltage supply
1.5V_DDR
Change D6001
Check 3.3V_STBY.
FACTORY DATA RESET
SYS SET
35