VC-MH815 (serv.man13). Adjustment and Replacement of Mechanical Parts - Sharp VCR Service Manual (repair manual). Page 10

• Replacement
1. Solder the removed PWB to the new head assembly.
2. Adjust the height from the A/C head arm (lower surface)

to the A/C head plate to 10.8mm with slide calipers. (3
places of azimuth screw section, tilt screw section and A/
C head front section) (See the figure below.)

3. Align the left end of gear of A/C head arm with the

punched mark of chassis, tentatively tighten the screws

1

  so as to ensure smooth motion of A/C head arm.

Tightening torque must be 0.45 ± 0.05N·m (4.5 ±
0.5kgf·cm).

1. In eject position unplug the power cord.

1. Take out FFC holder from main chassis.

(Push 3 hooking point and pull-up the
holder).

2. Remove the screws 

123

, Tilt screw.

3. 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.

Note:
1. If the screw 

1

  is 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 4-17.)

Height screw

Left end of A/C head arm gear
Punched line mark on chassis

1

3

1

2

A/C head screw

Azimuth spring

Height adj. screw

A/C head PWB ass'y
(with A/E)

Tilt screw

Height Adj. spring

A/C head PWB

Azimuth adj. screw

*Derection designation.
(The bottom part is big.)

A/C head plate

10.8mm

A/C head FFC

A/C FFC holder

Solder

A/C head PWB

New A/C head ass'y

A/C head plate

*Fit the groove of FFC to
 the boss of the holder.

AC Head 
FFC
Holder