VC-MH815 (serv.man13). Adjustment and Replacement of Mechanical Parts - Sharp VCR Service Manual (repair manual). Page 17

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25
VC-MH705HM/LM
VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM
4-23 INSTALLING THE MASTER CAM (AT
REAR SIDE OF MECHANISM CHASSIS)
1. Make sure beforehand that the shifter is at initial posi-
tion. (Right side from bottom view)
2. Place the master cam in the position as shown below.
3. Fix the E ring.
Note:
See the figure below for the phase matching between the
master cam synchro gear and pinch drive cam.
4-24 REPLACEMENT OF LOADING MOTOR
• Removal
• Replacement
Remove the loading motor, and install the replacement
loading motor as shown below.
Figure 4-40.
Figure 4-38-2.
The loading motor pressing-in must be less than 196N (20
kgf).
Adjust the distance between motor and pulley to 6.95
      mm.
Figure 4-38-1.
Figure 4-39.
+0
.  2
–0.15
E-ring
6.95      mm
A part
Worm gear
+0
 - 0.15
Loading 
motor
To press the motor in, first 
receive it by portion A.
Apply grease
Worm gear
Apply grease
Apply grease
Apply grease
L-M-Block.
Worm wheel gear.
Leading connect gear.
*Apply grease to 
the tip as well.
Loading
motor.
Wire
+ : Red
- : White
Red
Insert
4. Adjust the master cam and pinch drive cam, fix the
synchro gear in correct position.
Pinch Drive Cam
Synchro
gear
Phase
matching
Hole of Pinch Drive Cam
Master Cam
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