16
TROUBLESHOOTING
4. AUDIO (Hi-Fi MODEL)
No sound in RF E-E mode
Is Audio signal output at IC602 pin
#3, 13?
A. No sound in E-E mode
a. RF E-E
Is Audio signal output at IC251
pin#16,17?
Are CLK and DATA obtained at
IC251 pin#42,43?
NO
Is 5V obtained at IC251 pin#40?
Replace IC251.
YES
YES
Is 12V obtained at IC251 pin#34?
NO
YES
Check POWER circuit.
YES
Is 5V obtained at IC051 pin#1?
Check Power circuit.
NO
Is there SIF signal at IC051 pin#2
in RF mode?
Check RF101.
NO
YES
Is there SIF signal out at IC051
pin#30, 31?
Check IC051.
NO
YES
YES
Check Digital board(No sound in
E-E mode)
NO
Check Output JACK.
YES
DF-5500/DFX-5502 SVC 2006.10.14 10:6 AM ˘
` 16 mac001 1200DPI 80LPI