AIWA CADW539
Service Manual

ELECTRICAL ADJUSTMENT-1/1
< TUNER SECTION >
1. AM IF Adjustment L007 ....................................................................... 530kHz

L003 BAR ANT

FRONT C.B

MAIN C.B
L007

3

CD C.B

2. AM VT Adjustment Settings: � Test point: C39 + � Adjustment location: L004 Method: Set to AM 1710kHz adjust L004 so that the test point becomes 5.5V±0.05V 3. AM Tracking Adjustment L003 ....................................................................... 600kHz TC001 ................................................................... 1400kHz

1
IC001 L005

4. FM VT Adjustment Settings: � Test point: C39 + � Adjustment location: L006

4
C39 L006

5
TC001 L004

Method:

Set to FM 108MHz adjust L006 so that the test point becomes 6.0V±0.05V

2 24

5. FM Tracking Adjustment L005 ........................................................................ 98MHz

3 9
SFR430

< TAPE SECTION >
6. Bias frequency Adjustment L330 ............................................................. 56kHz ±2kHz 7. Tape speed Adjustment Settings: � Test tape: MT111 � Test point: PHONES JACK (J251) � Adjustment location: SFR761 Method: Play back the test tape and adjust so that the output frequency is 3000Hz ±30Hz. 8. Azimuth Adjustment Settings: � Test tape: TTA-320 � Test point: PHONES JACK (J251) � Adjustment location:Azimuth adjustment screw

L330

6
SFR761 J251

7

Method:

87

Play back the 8kHz signal of the test tape and adjust screw so that the output becomes maximum.

JACK C.B
RPH/PH

< CD SECTION >
9. Focus Bias Adjustment Settings: � Test CD: TCD-782 (A-BEX) � Test point: IC401 PIN20, PIN58 � Adjustment location: SFR430 Method: Play back the #15 of the test CD and adjust SFR430 so that the voltage between pin20 and pin 58 of IC401 becomes 0V ±0.1mV.

8

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