Service manual

13
VC-A565U/H965U
SUPPLEMENT
• 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 clockwise.
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 counterclockwise.
At right side from the reference line. (A).
Tension pole adjustment driver adjusting direction
Make the adjustment with the beginning of a T-120 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
+0.5
–0.2
4-13 CHECKING AND ADJUSTMENT OF
RECORD/PLAYBACK BACK TENSION
* Checking can be perform with or without cassette
housing contorl.
• Remove the cassette housing contorol assembly.
• After short-circuiting between TP803 and TP802
provided at main PWB, plug in the power cord.
• Setting (with cassette housing contorl)
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.
• Setting (with cassette housing contorl)
1. Insert cassette torque meter.
• 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.