Sharp 13VT-N100 Service Manual page 28

13VT-N100
13VT-N150
13VT-CN10
2. Visually check to see if the right edge of the tension
pole is within the 1.5 ± 0.25mm from the right edge of
the Sup guide shaft.
Tension pole
1.5 ± 0.25mm
-0.1
1.6
-0.6
Make the adjustment with the beginning of a T-120 tape.
Figure 1-15.
At left side from the center line
1.5 ± 0.25mm
Figure 1-16.
Insert the slotted screwdriver in the tension pole adjuster,
and rotate counterclockwise.
At right side from the center line
1.5 ± 0.25mm
Figure 1-17.
Insert the slotted screwdriver in the tension pole adjuster,
and rotate clockwise.
Sup guide shaft
mm
Tension pole adjuster adjusting range
Tension pole adjuster
Figure 1-18.
Adjust so that the delta mark of tension pole adjuster
is within 90° range (left, right).
CHECKING AND ADJUSTMENT OF RECORD/
PLAYBACK BACK TENSION
• Remove the cassette housing control assembly.
• After short-circuiting TP7701 and TP7702 pro-
vided at the left on the main PWB, plug in the
power cord, then turn on the power.
• Setting
1. Open the torque cassette meter and fix with tape.
2. Set the cassette tape in loading state.
3. Put the weight (500g) on the cassette torque meter.
Weight to prevent
float (500g)
Figure 1-19.
• 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 (36.5 to 52g·cm) by seeing the indication of
torque cassette meter.
28
500g
Cassette torque
meter