Sharp VC-MH80

VC-MH80
VC-MH90
REPLACEMENT OF AK (Audio/Control)
HEAD
1. Remove the cassette housing control assembly.
2. Place the unit in the unloading mode, and un-
plug the power cord.
0 Removal
1. Loosen the tilt adjusting screw 0.
2. Remove the azimuth adjusting screw 8.
3. Remove the A/C head screw 8.
4. Unsolder the A/C head PWB soldered to the A/C
head assembly.
Notes:
1. After replacement, be sure to perform the ad?
justment of the tape drive train (see page 23):
’ Under any circumstances, avoid touching the
head. Clean the head, if touched with your fini
ger, with alcohol.
2. Take care that the azimuth spring does not fly
off when removing the A/C head screw.
Pay attention to
-1
the azimuth spring
Figure 4-26.
0 Replacement
1. Solder the r&moved A/C head PWB onto a new
A/C head assembly.
2. The A/C head assembly is attached so that the
A/C head arm and A/C head plate are roughly
parallel to each other.
New AK head
Never touch the
PWB
L
A/C head arm
Figure 4-28.
l Adjustment
[AK head tilt angle]
1. Set the mechanism to the loading mode.
2. Place the A/C head tilt adjusting Jig 0.
3. Slowly turn the tilt adjusting screw c4 with a
screw driver until there is no gap between the Jig
and the AK head.
(a)
Screw
drover
AJCheadarm-/
L AKhead
Tilt adjustmg
screw
\
NC head plate
Figure 4-27.
b)
Figure 4-29.
21