Sharp VC-A30G Serviceanleitung Seite 24

VC-A30G(BR} VC-A30S(BR}
VC-A30GM(BR) VC-A30SM(BR)
VC-A30QM(BR) VC-A30SV(BR)
REPLACEMENT OF A/C (Audio/Control)
HEAD
. Remove the cassette housing control assembly.
. Place the unit in the unloading mode, and
unplug the power cord.
Removal
. Loosen the tilt adjusting screw ©.
. Remove the azimuth adjusting screw @.
. Remove the A/C head screw @).
. Unsolder the A/C head PWEB soldered to the A/C
head assembly.
Note :
1. After replacement, be sure to perform the
1.
2.
adjustment of the tape drive train (see page 26).
Under any circumstances, avoid touching the
head. Clean the head, if touched with your
finger, with alcohol.
. Take care that the azimuth spring does not fly
off when removing the A/C head screw.
Pay attention to
the azimuth spring
A/C head height
adjusting nut A/C head arm
X-position
adjusting nut
Figure 1-46.
Replacement
Solder the removed A/C head PWB onto a new
A/C head assembly.
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.
Solder
Lo
A/C head PWB
New A/C head ass'y
Never touch the head.
A/C head plate
Figure 1-47.
24
A/C head A/C head plate
j-—- A/C head height
adjusting nut
Roughly parallel
A/C head arm
Figure 1-48.
© Adjustment
[A/C head tilt angle]
1. Set the mechanism to the loading mode.
2. Place the A/C head tilt adjusting jig.
3. Slowly turn the tilt adjusting screw with a screw
driver until there is no gap between the jig and
the A/C head.
A piece of white paper
ie (for visuality of a gap)
AIC head tilt
adjusting jig
(a)
| - driver
A/C head arm AIC head
(b)
Figure 1-49.