Sharp 14VT10X1, Service Manual

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Push the or tracking button to check
t h a t a f l a t r e s p o n s e i s o b t a i n e d o n t h e
envelope waveform.
Secure the guide roller by tightening the
guide roller setscrew in the unloading mode.
h) Play back the tape drive train alignment tape
to check that the envelope waveform does
not change.
8. Adjustment of A/C head X-position.
Push the and tracking buttons at the
same time to the preset mode.
Rotate the X-position adjusting nut with an
adjusting box driver, and adjust the A/C head
position for maximum head switching pulse
low side envelope.
Adjust the playback switching point.
d) Check the flatness of the envelope waveform
and sound by playing back a recorded tape.
n u t
Figure l-62.
REPLACEMENT OF THE CAPSTAN D.D.
(DIRECT DRIVE) MOTOR
Remove the cassette housing control assembly.
l R e m o v a l ( F o l l o w t h e o r d e r o f i n d i c a t e d
numbers.)
Remove the
m o t o r
R e m o v e reel
Figure
l Reassembly
1. Mount the capstan motor on the mechanism
chassis making sure not to allow the capstan
shaft to hit the mechanism chassis, and attach it
with the three screws.
2. Insert the FFC into the capstan D.D. motor
control PWB.
3. Attach the reel belt.
Notes
1.
2.
After installing the capstan D.D. motor, be sure
to rotate the capstan
motor and check the
movement.
Check and adjust the servo
REMOVAL AND REASSEMBLY OF THE
LOADING GEAR BLOCK
Notes The following explanation is based on
head models. (The slow brake spring and
slow brake lever are not provide&on
head models.)
1. Remove the cassette housing control assembly.
2. Remove the reel belt.
3. Remove the reel block.
Removal
Notes
Use care not to deform the parts hooked to the
slow brake shaft cap, take-up loading gear, and
supply loading gear as shown in Figure l-64.
Figure l-64.
removing the loading gear, secure the guide
roller with a rubber band or the like beforehand
for easier reassembly.
Remove the relay
gear drive lever
relay
s l o w
Unhook the
Loading relay gear
C a p s t a n motor
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