Ff/Rew Rottating Speed Adjustment; Take-Up Torque Adjustment; Tape Speed Check; Fast Torque Check - Pioneer CT-9R Service Manual

4.4 FFIREW Rottating Speed Adjustment
1. Connect the frequency counter between FG
of reel motor control assembly and GND
(Fig. a-5).
2. Set the DIRECTION switch to FORWARD
and then the mode to FF.
3. Adjust VP"202 so that the frequency counter
indicates 72Hz t 2Hz.
4. Set the mode to REW and at this time check
that a reading of frequency counter is within
7 2 H z ! 5 H z .
Fig. 4-5 FFlREW Rotating speed adjustment
TAKE-UP Torque Adjustment
Mount a cassette type torque meter.
Set the DIRECTION switch to FORWARD
and then the mode to PLAY.
Adjust VR201 so that the take-up torque is
45 ! 5 g-cm (Fig. 4-5).
Set the DIRECTION switch to REVERSE.
Check that the take-up torque is within
35-55g-cm (Fig.4-6).
4.6 Tape Speed Check
1. Connect the frequency counter to the OUT-
PUT terminal (L or R).
2. Load the STD-301 test tape and set it at the
beginning of REW.
3. Set the DIRECTION switch to FORWARD
and then the mode to PLAY.
4. Set the DIRECTION switch to REVERSE
and a reading of frequency counter is within
3000t30H2 at the beginning of tape rewind-
ing.
4.7 Fast Torque Check
1. Mount a cassette type torque meter.
2. Set the DIRECTION'switch
to FORWARD
and then the mode to FF.
3. Check that the FAST torque is within 100 t
30 g-cm in the condition described in above 2.
4. Set the mode to REW and at this time check
that the FAST torque is within 100 t 30 g-cm.
Reel Base Back Tension Torque
Mount a cassette type torque meter.
Set the DIRECTION switch to FORWARD and
then the mode to PLAY.
3. At this time, check that the back tension on a
supply reel side (left reel base) is within 3.5 I
1.5 g-cm.
Set the DIRECTION switch to REVERSE.
At this time, check that the back tension on
the supply reel side (right reel base) is within
3.5 i 1.5 g-cm.
4.8
1 .
2 .
4 .
5 .
4.5
1 .
2 .
4 .
o .
3 .
Torque meter
5 U
Fig. 4-6 Take-up torque adlustment