Service manual

CA-29
Flowcharts
3. No Tuning
Start
Are all tuner
voltages
present? (Refer
to schematics.)
Check tuner
power supplies.
Is IF present at
pin 11, TU6000?
Does changing
the tuner fix the
problem?
Check clock and
data lines.
Replace IC6000
if clock & data
lines OK.
Is IF present at
pins 7, 8,
ICX2200?
Check IF line.
Replace Q1200,
U1200 if
necessary.
Is IF present at
pin 47,
ICX2200?
Does Q1201 test
OK?
Replace
ICX2200.
Replace Q1201
Refer to No Audio and No
Video Troubleshooting.
Yes
No
No
No No
No
No
Yes
Yes
Yes
Yes