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TROUBLESHOOTING
C
1. RECEIVER SYSTEM
C
1
I
• 03 or TA7201 in the AF-AVR Ass'y is
defective.
• Q7 Of 2SA496 in the AF-AVR Ass'y is
defective
• The " + B" line is shorted.
• Defective
• Defective
• Defective
AF GAIN VP
AF GAIN VR
contact
wiring.
• Defective voltage regulator
• Refer to the PLL Troubleshoo
ing
Check power supplies for 4V and AGC circuit.
• Any of T1 through T8 on IF-A requires adjustment,
or is defective
' T1. 2. or 3 on IF-B requires adjustment, or is defec-
C A R - 3 oscillator circuit defective.
Defective NOTCH VR1 or T1 or their peripherals.
CAR-2 oscillator circuit defective.
Defective 455 kHz filter switching.
CAR-1 oscillator circuit is defective.
Defective filter switching circuit.
The flPF requires alignment or repair
Defective crystal X1 or X2.
Any of Q1 through Q4 in the RF Ass'y is defective.
Variable tuning capacitor is shorted.
Converter switch defective contact.
Defective ANT circuit coaxial cable or defective RF ATT circuit
Defective band selector switch contact ANT or RF coil requires ad-
justment, or replacement.
47
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