Sanyo HV-DX3E Service Manual page 16

4. AUDIO (Hi-Fi MODEL)
A. No sound in E-E mode
a. RF E-E
No sound in RF E-E mode
Is 5V obtained at IC051 pin#1?
YES
Is there SIF signal at IC051 pin#2
in RF mode?
YES
Is there SIF signal out at IC051
pin#30, 31?
YES
Is 12V obtained at IC251 pin#34?
YES
Is 5V obtained at IC251 pin#40?
YES
Is Audio signal output at IC251
pin#16,17?
YES
Is Audio signal output at IC601 pin
#3, 13?
YES
Check Output JACK.
NO
NO
Are CLK and DATA obtained at
IC251 pin#42,43?
NO
Comparing with switching table, are SWA, B CTL SIGNAL
YES
Replace IC601.
15
NO
NO
NO
YES
right at IC601 pin #9,10?
TROUBLESHOOTING
Check Power circuit.
Check RF101.
Check IC051.
Check POWER circuit.
Replace IC251.
NO
Check IC501.