VC-MH834 (serv.man2). 1 - Text (1-34) - Sharp VCR Service Manual (repair manual). Page 23

1. Set the ejection mode.
2. Withdraw the main power plug from the socket.

• Removal (Perform in numerical order.)
1. Disconnect the FFC cable 

1

.

2. Unscrew the D.D. stator assembly fixing screws 

2

.

3. Take out the D.D. stator assembly 

3

.

4. Unscrew the D.D. rotor assembly fixing screws 

4

.

5. Take out the D.D. rotor assembly 

5

.

Notes:
1. In removing the D.D. stator assembly, part of the drum

earth spring pops out of the pre-load collar.
Be careful not to lose it.

2. Install, so that the D.D. rotor ass'y and upper drum ass'y

mounting direction check holes align.
(Align the upper drum dent with the rotor hole.)

3. Be careful not to damage the upper drum or the video

head.

4. Protect the hole elements from shock due to contact with

D.D. stator or D.D. rotor ass'y.

5. After installation adjust the playback switching point for

adjustment of servo circuit.

• Remove the mechanism from the main PWB (refer to

Page 6 item 1. When removing the mechanism from the
main PWB").

1. Remove the reel belt 

1

.

2. Remove the slow brake lever 

2

.

3. Remove the three screws 

3

.

2

4

4

5

D.D. stator ass'y

D.D. rotor ass'y

Upper drum

3

1

FFC

Capstan D.D.
motor

Capstan D.D. motor
control PWB

3

1

Reel belt

2

Slow Brake lever

1. Taking care so that the capstan shaft does not contact

the mechanism chassis, set its position on the mecha-
nism chassis, and then install with the three screws.

2. Install the slow brake lever.
3. Install the reel belt.
Notes:
1. Before installing the capstan D.D. motor, confirm  whether

an acetate tape (ZTAPE120020E) is drawn on the back
of mechanism chassis.

2. After installing the capstan D.D. motor, be sure to

rotate the capstan D.D. motor and check the move-
ment.

3. Set the tape, and check for the tape crease near the

reverse guide in the playback mode. Adjust the A/C
head and azimuth as stated in Page 21 Replacement
2. If crease is found, adjust as stated in Page 20
"HEIGHT ADJUSTMENT OF REVERSE GUIDE".

MechanismChassis from the back.

Stick an acetate tape on the 
projection part of the chassis.

Capstan Motor 
installation position.