Aiwa HV-GX900 K Wartungshandbuch PDF herunterladen (Seite 66)

DECK MECHANISM ADJUSTMENT

5. Audio/Control (A/C) Head Adjustment

10.9

-0.05

Purpose: To insure that the Tape passes accurately over the Audio and Control Tracks in exact

Alignment in both the Record and Playback Modes.

Test Equipment/ Fixture

• Blank Tape

• Screw Driver(+) Type 5mm

• Play the blank tape

Test Conditions (Mechanism Condition)

Adjustment Point

• Tilt Adjustment Screw(C)

• Height Adjustment Screw(B)

• Azimuth Adjustment Screw(A)

Fig. C-5-1

A/C Head Base

Fig. C-5-2

Height Adjustment

Screw(B)

Tilt Adjustment

Screw(C)

Azimuth Adjustment

Screw(A)

X-Value Adjustment

Hole

Fixed Screw

Fig. C-5-3

A/C Head

Tape

0.2~0.25mm

5-1. Preliminary Adjustment (Height and Tilt Adjustment)

Perform the Preliminary Adjustment, when there is no Audio Output Signal with the Alignment Tape.

1) Initially adjust the Base Assembly A/C Head as shown

Fig. C-5-1 by using the Height Adjustment Screw(B).

2) Play a Blank Tape and observe if the Tape passes accu-

rately over the A/C Head without Tape Curling or

Folding.

3) If Folding or Curling is occured then adjust the Tilt

Adjustment Screw(C) while the Tape is running to

resemble Fig. C-5-3.

4) Reconfirm the Tape Path after Playback about 4~5 sec-

onds.

Ideal A/C head height occurs, when the tape runs

between 0.2~0.25mm above the bottom edge of the A/C

head core.

NOTE

Adjustment Procedure/Diagrams

A/C Head Assembly

1 2 ... 61 62 63 64 65 66 67 68 69 70 71 ... 76 77

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