VC-M303 (serv.man13). Adjustment, Replacement and Assembly of Mechanical Units - Sharp VCR Service Manual (repair manual). Page 10

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
height screw section) (See the figure below.)

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

punched mark of chassis, tentatively tighten the screws
plate 

1

 and 

2

 so as to ensure smooth motion of A/C

head plate. Tentative tightening torque must be 0.15 to
0.20 N·m (1.5 to 2.0kgf·cm).

1. Remove the cassette housing control assembly.
2. In unloading state unplug the power cord.

1. Remove the screws 

123

, Azimuth screw, Tilt screw.

2. Unsolder the PWB fitted to the A/C head.

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 spring out.

A/C head PWB

2

Spring

1

Solder

10.8mm

10.8mm

Azimuth screw

Height screw

Tilt  screw

A/C head base

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 20, 21.)

Punched line mark on chassis

Left end of A/C head plate gear

1

2

3

Height screw

3

∗

Never touch the head

New A/C head ass'y