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Tape Speed Adjustment (for both decks A and B)
Procedure
Mode: Playback
frequency
counter
test tape
sp kelaildo
WS-48A
(3 kHz, 0 dB)
PHONES
Specification (in the middle of the tape):
P|
raquo counr |
High speed
5970 + 30 Hz
2985 + 15 He
Frequency
difference
between
the
beginning
and
the
end
of the
tape should
be within +1.5%
(45 Hz).
Short (A) point (TP301 and TP302)
(It results in high speed mode.)
Insert WS-48A in deck-A (deck-B) and put into
playback mode.
Adjust RV301
(RV304) for the specified read-
ing on
the
frequency
counter
or the speed
checker.
Open (A) point (TP301 and TP302)
(It results in normal speed mode.)
Adjust RV302
(RV303) for the specified read-
ing on
the
frequency
counter
or
the
speed
checker.
Adjustment Location: MAIN board
(rear side of set)
| ¢FS-w301
Record Bias Adjustment
Setting:
TONE:
mechanical mid
FUNCTION:
TAPE (RADIO OFF)
sane
Mode: record
o>
osc
EXT MIC
1) 315 Hz \
.
2) 6.3 kHz | 77.5uV
(—80 aB)
2.
Mode: playback
recorded
portion
PHONES
Confirm that the 6.3 kHz playback signal level
is 0 + 3 dB relative to the 315 Hz signal.
If necessary,
adjust by connecting
or discon-
necting JW72.
Adjustment Location: MAIN board
JW72
(MAIN
BOARD]
7 > gageosar
s = ee
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