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MC-8000
|
ADJUSTMENT INSTRUCTION.....Circuitry Section of Cassette Deck
Adjustment of Playback Mode
Adjustment
:
Measuring
Adjustment Method
Ese |
coe
VR601
| C616
put of within 580 mV + 25dB.
Adjustment of Recording Mode
iseren
Adjustment Method
Cen
Bias
T481
Both ends of
Put the set in the no-signal recording mode.
frequency
10022 resistor
Adjust for a frequency counter reading of 85 kHz.
Bias
VR481
| Both ends of
With the set in the no-signai recording mode, adjust so that the output
current
VR482
| 10022 resistor
voltage will be 51 mV (510uA), i.e., standard voltage.
Connect AC
Take out the inserted 100Q resistor and connect it in the normal man-
voltmeter to
ner.
LINE OUT
Put the set in the "specified recording' mode by applying 400 Hz signals
to the LINE IN terminal. With the signal level at the LINE IN terminal
lowered by 30 dB, record the signals on Test Tape MCT-GO6SA.
Under the same conditions, record 6.3 kHz. Confirm
so that the leve!
of 6.3 kHz will be within +0.5 dB, —O dB with reference to 400 Hz
when
the tape is played. If this value cannot be obtained, adjust the
"standard voiltage'' and reconfirm.
Recording;
VR504
| Both ends of
Put the set in the "specified recording" mode and stop the bias oscillator.
current
VR604
| 1002 resistor
With the Tape selector set to "SPECIAL", set to the "standard voltage",
of 5.8mV (58uA).
voltmeter to
ner.
* "Specified recording'' Mode
The "specified recording" mode is the mode obtained by applying the rated input level (-10dB) signals to the input
terminal, and then adjusting the recording level contro! knob so that the rated output level (—7 dB) will be obtained
at the output terminal.
-~10—
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