Sharp VC-H992U Service Manual page 21

A/C HEAD HEIGHT ROUGH ADJUSTMENT
• Setting
Azimuth screw
Height screw
500g
Weight to prevent
float (500g)
Figure 4-26.
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.
A/C head
Tape
Figure 4-27.
• Adjustment
Adjust the height screw visually so that the control head is
visible 0.3mm below the bottom of the tape.
Tilt screw
Cassette tape
Mechanism chassis
0.3mm
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).)
Reverse guide
Reverse guide height
adjusting jig
(a)
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)).
CCW
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
500g
Weight to
Mechanism
prevent float (500g)
chassis
* Check for crease from the A direction.
21
VC-H992U
VC-H992U(A)
Reverse guide height
adjusting jig
Mechanism
13.38mm
chassis
(b)
Figure 4-28.
Box driver
Height adjusting nut
Figure 4-29.
Capstan
motor shaft
En example of
crease near the
Reverse guide
reverse guide
Figure 4-30.
Fixing guide