Ff/Rew Rotating Speed Adjustment; Take-Up Torque Adjustment; Tape Speed Adjustment; Reel Base Back Tension Torque Check - Pioneer CT-7R Service Manual

1 1 . 4 F F / R E W R O T A T I N G S P E E D A D J U S T M E N T
1. Connect the frequency counter between FG
of reel motor control assemblv and GND
(Fig. 11-5).
Set the DIRECTION switch to FORWARD
and then the mode to FF.
Adjnst VP"2O2 so that the frequency counter
indicates 72Hz t 2Hz.
Set the mode to REW and at this time check
that a reading of frequency counter is within
7 2 H z t 5 H z .
Capstan motor control
a s s e m b l v
C o n n e c t t h e
f r e q u e n c y c o u n t o r
F i g . 1 1 - 5 F F l R E W R o t a t i n g s p e e d a d l u s t m e n t
1 1 . 5 T A K E - U P T O R O U E A D J U S T M E N T
1. Mount a cassette type torque meter.
2. Set the DIRECTION switch to FORWARD
and then the mode to PLAY.
3. Adjust VR201 so that the take-up torque is
45 t 5 g-cm (Fig. 11-5).
4. Set the DIRECTION switch to REVERSE.
5. Check that the take-up torque is within
45 I 10 g-cm (Fig. 11-6).
2 .
to the OUT-
set it at the
F O R W A R D
of frequency
beginning
of
00 t 39 g-"-.
T O R O U E
RWARD and
tension on a
within 3.5 t
R E V E R S E .
tension on
2 .
3 .
4 .
4 .
5 .
1 1 . 6 T A P E S P E E D A D J U S T M E i I T
1 .
Connect the frequency c
PUT terminal (L or R).
Load the STD-301 test
beginning of REW.
3. Set the DIRECTION switc{
and then the mode to PLAY. lr
4. Adjust VR101 so that a
counter is 3005 t I0 Hz at
tape rewinding.
5. Set the DIRECTION swi REVERSE
ter is within
and a reading of frequency
3000t20H2 at the beginn
mg.
tape rewind-
R e e l m o t o r c o n t r o l Cagstan motor
c o n t r o l
assembly
F i g . 1 1 - 7 T a p e s p e e d
11,7 FAST TOROUE CHECK ,r
1. Mount a cassette type torque
r .
FORWARD
2. Set the DIRECTION swi
and then the mode to FF.
I
3. Check that the FAST torqu$
within 100 t
30 g-cm in the condition
in above 2.
time check
4. Set the mode to REW and [t
that the FAST torque is witffin
1 1 . 8 R E E L B A S E B A C K T E
C H E C K l
1 .
I
3 .
Mount a cassette type torq
Set the DIRECTION switch
then the mode to PLAY.
At this time. check that the
supply reel side (left reel bd$e
1 . 5 g - c m .
Set the DIRECTION swi
At this time. check that
the supply reel side (right
3 . 5 t 1 . 5 g - c m .
F i g . 1 1 - 6 T a k e - u p t o r q u e a d i u s t m e n l
base) is within