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VC-H91GM(BK)
VC-H91SM(BK)
VC-H92GM(BK)
REPLACEMENT OF A/C (Audio/Control)
HEAD
1. Remove the cassette housing control assembly.
2. Place the unit in the unloading mode, and un-
plug 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 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 24).
Under any circumstances, avoid touching the
head. Clean the head, if touched with your fin-
ger, with alcohol.
2. Take care that the azimuth spring does not fly
off when removing the A/C head screw.
AWD
= @
A/C head PWB
Pay attention to
the azimuth spring
A/C head height
AC headarm
adjusting nut
X-position
adjusting nut
Figure 4-26.
@ Replacement
1. Solder the removed 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.
Solder
_-— AChead PWB
New AC head ass'y i
sa
D)
,
Never touch the ain
Ze
* AJC head plate
Figure 4-27.
A' head plate
AX head height
adjusting nut
A/C head
Roughly parallel
A/C head arm
Figure 4-28.
© 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
(for visuality of a gap)
Pe a
A/C head
Tilt adjusting
screw
A/C head tilt
adjusting Jig
(a)
A/C head arm
-- A/C head
(b)
Figure 4-29.
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