VC-MH815 (serv.man13). Adjustment and Replacement of Mechanical Parts - Sharp VCR Service Manual (repair manual). Page 8

Read Sharp VC-MH815 (serv.man13) Service Manual online

16
VC-MH705HM/LM
VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM

• Checking
1. Set a cassette tape, push the REC button to place the
unit in the SP record mode. Now check the tension pole
position.
2. Visually check to see if the position of the tension pole is
within the 0         mm from the left side line.
Insert the tension pole adjustment driver to main chassis
hole, and rotate counterclockwise.
Figure 4-15.
At left side from the reference line. (A).
Figure 4-13.
Figure 4-14.
Insert the tension pole adjustment driver to main chassis
hole, and rotate clockwise.
At right side from the reference line. (A).
Tension pole adjustment driver adjusting direction
4-13 CHECKING AND ADJUSTMENT OF
RECORD/PLAYBACK BACK TENSION
Make the adjustment with the beginning of a E-180 tape.
Figure 4-16.
Figure 4-17.
A
A
A
Tension pole
adjustment
driver
CW
CCW
Cassette torque
meter
500g
Weight to prevent
float (500g)
Standard A = 0         mm
+ 0.5
- 0.2

• Checking
1. Push the REC button to place the unit in the SP record
mode.
2. At this time ascertain that the back tension is within the
setting 3.9 to 5.5mN
⋅
m (40 to 56gf·cm) by seeing the
indication of torque cassette meter.
+ 0.5
– 0.2

• Setting (with cassette housing control)
1. Insert cassette torque meter.
∗
∗∗
∗∗
Checking can be perform with or without
cassette housing control.
• Remove the cassette housing control assembly.
• After short-circuiting between TP803 and TP802 pro-
vided at main PWB, plug in the power cord.

• Setting (without cassette housing control)
1. Turn off the power switch.
2. Open the cassette torque meter and fix with tape.
3. Set the cassette torque meter in loading state.
4. Put the weight (500g) on the cassette torque meter.
5. Turn on the power switch.

Display

Click on the first or last page to see other VC-MH815 (serv.man13) service manuals if exist.

Random: