Table of Contents
Advertisement
Cause and Remedy
A) Improper adjustment.
Readjust VR3.
(Refer to MPX Alignment.)
B) IC3 defective.
Replace.
C) Variable resistor VR3 defective.
Replace the variable resistor.
Poor multiplex separation.
STEREO indicator does not light.
A) Defective indicator in FL.
Replace.
B) Improper adjustment of VR2 of tuner board.
Make readjustment.
C) Defective iC2.
Replace the defective component.
FM volume is insufficient.
A) lf volume from both L and R channels is not loud
enough :
Front end section defective.
Faulty IC2, Coil T4 or T5.
If sound of one channel is not loud enough:
Defective VR3.
FM Mono has no effect.
A) Defective FM MODE switch.
Replace.
AM inoperative.
A) Damaged
!C2 of tuner board.
Replace.
B) Defective T1,T2,T3 or CF4 of Tuner Board.
Replace the defective component(s).
C) Defective AM switch.
Replace.
D) Defective varicap diodes VD1 or VD2.
Replace varicap diods(s).
| E) Damaged AM loop antenna.
Repair or replace.
{
1
Bass control has no effect
A) Variable resistor BASS defective.
Replace.
20
Advertisement
Table of Contents
