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SECTION
3
ADJUSTMENTS
3-1.
MECHANICAL
ADJUSTMENTS
PRECAUTION
1.
Clean the following parts with a denatured-alcohol-moistened swab:
record/playback head
pinch roller
erase head
rubber belts
capstan
idlers
2.
Demagnetize the record/playback head with a head demagentizer.
(Do not bring the head demagnetizer close to the erase head.)
3.
Do not use a magnetized screwdriver for the adjustments. °
4.
After the adjustments, apply suitable locking compound to the parts
adjusted.
—
5.
The adjustments should be performed with the rated power supply
voltage unless otherwise noted.
Torque Measurement
CQ-201B
Tape Tension Measurement
1.5 — 5.5 gecm
Deck-A: More than 80g*cm
(More than 1.12 ozeinch)
Deck-B: More than 5Sgecm
(More than 0.76 ozeinch)
Rewind
Fast foward
Tension Meter
Meter Reading
CQ-403A
more than 100 g (3.53 0z)
:
3-2.
ELECTRICAL
ADJUSTMENTS
TAPE SECTION
1.
The adjustments should be performed in the order given in the service
manual. (As a general rule. Playback circuit adjustment should be
completed before performing recording circuit adjustment.)
2.
The adjustments should be performed for both L-ch and R-ch unless
otherwise indicated.
@
Switch position
FUNCTION
5:4 340408 sasaetawinreaee ws TAPE (RADIO OFF)
GRAPHIC EQUALIZER «+ +++srserererecssersseens center click
BALANCE cs 0ciw eon atraeewanwhen
eran iaek anaes center click
VOLUME sate ia eed nar cea adaaenetates > mechanical center
BASS BOOST -rrrcsterereeeees ttteees «+++ mechanical center
e
Standard input level
Input level
3.085 mV ( — 48 dB)
e
Standard output level
Output level
0.775 V (0 dB) | 0.25
V(— 10 dB)
e
Test Tape
[Type | Signal
Weed tor
_ P-4-A063
6.3 kHz, — 10 dB | azimuth speed adjustment
0 dB=0.775 V
Record/Playback Head Azimuth Adjustment
Procedure:
1.
Mode: playback
test tape
P-4-A063
(6.3 kHz, — 10 dB)
PHONES jack
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