Sharp VC-A422U, Service Manual

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22
VC-A422U
VC-H822U
500g
Figure 4-26.
Figure 4-27.
Height screw
Azimuth screw
Tilt screw
Cassette tape
Weight to prevent
float (500g) Mechanism chassis
Tape
0.3mm
A/C head
• Adjustment
Adjust the height screw
visually so that the control head is
visible 0.3mm below the bottom of the tape.
1. Set the cassette tape in the unit.
2. Press the PLAY button to put the unit in the playback
mode.
3. Roughly adjust the height of the A/C head by turning the
height screw until the tape is in the position shown
below.
4-16 A/C HEAD HEIGHT ROUGH ADJUSTMENT
• Setting
4-17 HEIGHT ADJUSTMENT OF REVERSE
GUIDE
1. Adjust the height from the mechanism chassis to the
reverse guide lower flange to 13.38 mm, using the
reverse guide height adjustment jig, in tape loading
state. (Refer to Figure 4-28 (a) (b).)
Figure 4-29.
3. Set the tape, and check for tape crease near the reverse
guide in the playback mode.
If crease is found, turn the reverse guide adjustment nut
to remove crease. (As for crease check refer to Figure 4-
30.)
(a) (b)
Figure 4-28.
2. Rotate counterclockwise the reverse guide height ad-
justment nut 1/10 turn. (For height adjustment use the
reverse guide height adjustment box driver (JiGDRiVER
11055)).
13.38mm
Reverse guide height
adjusting jig
Reverse guide height
adjusting jig
Reverse guide
Mechanism
chassis
Box driver
Height adjusting nut
CCW
500g
Capstan
motor shaft
Mechanism
chassis
Reverse guide
An example of
crease near the
reverse guide
Weight to
prevent float (500g)
Fixing guide
* Check for crease from the A direction.
Figure 4-30.
A