Sony RMT-D254A Service Manual page 67

No Analog Audio Output
Check AVIC 1
(Pin # 109, 110)
Yes
Check 8AIC4
(Pin # 1, 7)
Yes
Check peripheral parts of JK80 1
Check VCC of AVIC 1
No
(P~#5 : 3.3V 1P~#3 : 1.8V)
and peripheral parts of Clock oscillation
(AVXAL 24, 576 Mhz)
No
Check VCC and peripheral parts of 8AIC4.
Check applicatin of 8AJK2
6-4
Check Audio input signal
1) Line 1 Audio input :
AVIC 1 Pin # 122, 123
2) Line 2 Audio input :
AVIC 1 Pin # 125, 126
3) VHS Play Audio input :
AVIC 1 Pin # 120,121 &
IC8 12 Pin #2,12