Sony KD-55A9F Service Manual page 24

2018/09/19 04:47:37 (GMT+09:00)
1.3 No Power DDCON/LDO
DDCON check
START
Check IC403 Vcc
Voltage C418
Is voltage >12V?
yes
Check Vcc voltage
C603
Is voltage >4V?
yes
Check Enable
IC600 #pin1
Is voltage >2.5V?
yes
Change DDCON
IC601
no
Check Vcc voltage
C603
Is voltage >3V?
yes
no
Check
D601
Is diode alive?
yes
no
Change IC600
no
Check
D600
Is diode alive?
yes
no
Change D601
Check 5V_MAIN DDCON (IC402)
BM3/ DPJ Board OLED Model
IC Ref
IC601 on BM3
no
Change D600
Check 3.3V_STBY.
G* board
24
Voltage supply
1.2V_M3_DDR
(Supplementary
24
information)
SYS SET