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Panasonic SG-160A Service Manual page 9

Mw/sw1/sw2 portable radio-phono with cassette deck fm/am portable radio-phono | with cassette deck

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1;
2.
3.
MECHANICAL ADJUSTMENT
OF TAPE DECK
PRESSURE
ROLLER ADJUSTMENT
Switch set to PLAY.
(Do not insert cassette.)
Hook Spring gage to arm of pressure rollers, as
shown in Fig. 11.
Pull pressure roller away from the capstan in the
direction of arrow 1 with spring gauge and slowly
permit
the
pressure
roller
to
return
forward
capstan in the direction of arrow 2.
. Measure
tension
at time when
pressure
roller
makes
contact with capstan
(or when
pressure
roller starts rotating.)
. The standard tension of pressure roller should be
250 ~ 380g.
. If pressure is not within these limits;
Clean the rubber roller and capstan with a soft
cloth moistened with alcohol or replace pressure
spring.
TAKE-UP TORQUE ADJUSTMENT
*
OND
oa
Test Tape: SRK-CT (Take-up Torque Meter)
. Insert test tape.
. Rewind the tape to its starting point.
. Switch set to PLAY.
. Read "»' mark of indicator on take-up side, as
shown in Fig. 12.
. Repeat PLAY-STOP
several times and read the
average tension.
. The standard take-up tension should be 30 ~
70 g.cm.
If take-up tension is not within these limits;
a) Clean
main belt, take-up reel and all parts
which
contact
them
with
a
cotton
swab
moistened with alcohol, and/or
b) Switch set to "OFF", remove main belt and
make
sure
that take-up
reel and
take-up
clutch are rotating smoothly.
c) Change take-up clutch tension by turning the
friction spring under reel table, as shown in
Fig. 13, and/or
d) Replace take-up clutch.
SG-160A/160F
Take-up Clutch Assembly
Spring Gauge
Indicator
CASSETTE
TORQUE
METER
SRK-CT
Torque Scale
FIG. 12
Plate Spring

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Sg-160f