Aiwa CSD-A240 Bedienungsanleitung PDF herunterladen (Seite 19)

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< CD SECTION >

1. Focus Bias Adjustment

Make the focus bias adjustment when replacing and repairing

the optical block.

1) Connect an oscilloscope to the test point TP3 (RF) and TP4

(VREF).

2) Turn on the power switch.

3) Insert test disc TCD-782 (YEDS-18) and play back the second

composition.

4) Adjust SFR430 so that the RF signal at the test point TP3 (RF)

is MAX and CLEAREST.

Oscilloscope

(DC range)

TP3 (RF)

TP4 (VREF)

+

-

EYE PATTERN

must be CLEAR and MAX

MAX

VOLT / DIV: 200mV

TIME / DIV: 0.5µs

0V

ADJUSTMENT <RADIO / TAPE / CD>

< RADIO SECTION >

1. AM Frequency Range Adjustment

• Test Point: TP5 (LCH), TP6 (RCH)

• Adjustment location:

L006 ....................................................................... 517kHz

TC003 ................................................................... 1750kHz

2. AM Tracking Adjustment

• Test Point: TP5 (LCH), TP6 (RCH)

• Adjustment location:

L003 ....................................................................... 600kHz

TC004 ................................................................... 1400kHz

3. AM IF Adjustment

• Test Point: TP5 (LCH), TP6 (RCH)

• Adjustment location:

L007 ....................................................................... 455kHz

4. FM Frequency Range Adjustment

• Test Point: TP5 (LCH), TP6 (RCH)

• Adjustment location:

L005 ........................................................................ 87MHz

TC001 .................................................................... 109MHz

5. FM Tracking Adjustment

• Test Point: TP5 (LCH), TP6 (RCH)

• Adjustment location:

L004 ........................................................................ 88MHz

TC002 .................................................................... 108MHz

6. FM IF Adjustment

• Test Point: TP5 (LCH), TP6 (RCH)

• Adjustment location:

L008, L009 ........................................................... 10.7MHz

< TAPE RECORDER SECTION >

1. Bias Adjustment

Settings: • Test tape: TTA-630

• Test point: TP2

• Adjustment location:

L801 ........................................... 85kHz±2kHz

2. Azimuth Adjustment

Settings: • Test tape: TTA-320

• Test point: PHONE JACK (J201)

• Adjustment location: Azimuth adjustment

screw

Method: Play back the test tape and adjust the screw so that the

output is maximum.

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