35
27DV-S100
27DV-CS10
REPLACEMENT OF A/C (Audio/Control)
HEAD
1. Remove the cassette housing control assembly.
2. In unloading state unplug the power cord.
• Removal
1. Remove the screws 123, Azimuth screw, Tilt screw.
2. Unsolder the PWB fitted to the A/C head.
Notes:
1. When replacing, never touch the head. If you touched,
clean with the cleaning liquid.
2. When removing the screw 3, take care so that the
spring may out.
• Replacement
1. Solder the removed PWB to the new head assembly.
2. Adjust the height from the A/C head plate (lower
surface) to the A/C head base to 10.8mm with slide
calipers. (3 places of azimuth screw section, tilt screw
section and A/C head front section) (See the figure be-
low.)
3. Align the left end of gear of A/C head arm with the
punched mark of chassis, tentatively tighten the screws
1 and 2 so as to ensure smooth motion of A/C head
arm. Tentative tightening torque must be 0.15 to 0.20
N·m (1.5 to 2.0kgf·cm).
Notes:
1. If the screws 1 and 2 are tighten tentatively too
loose, the azimuth and height of A/C head may change
when they are finally tightened. Therefore care must be
taken.
2. After completion of A/C head be sure to adjust tape
running. (Execute the running adjustment by the method
described in page 37.)
Figure 1-23.
Tilt screw
3
1
2
Spring
Height screw
Azimuth screw
Solder
New A/C head ass'y
Never touch the head
A/C head base
A/C head PWB
10.8mm10.8mm
Figure 1-25.
1
3
2
Height screw
Left end of A/C head plate gear
Punched line mark on chassis
Figure 1-24.
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