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1 1 . 2 E L E C T R I C A L A D J U S T M E N T S
r Before commencing any electrical adjustments, make
sure the following checked/completed.
1. All mechanical adjustments must have been
completed.
2. The heads must be clean and demagnetized.
3. Connect a 50kA (47kSl
52kO) dummy
resistance to the OUTPUT terminal with OdB
:1V during level measurements.
4. Use the specified tapes for each adjustment.
Although test tapes have both A and B sides,
only use side A where the label is attached.
STD-331B: Playbackadjustment
STD-608A:
NORMAL blank tape
STD-603:
CrOz blank tape
STD-610:
METAL blank tape
5. Prepare the following measuring equipment.
AC millivoltmeter, audio generator, attenuator,
oscilloscope.
6. Adjust both left and right channels unless
otherwise specified.
7. And unless indicated otherwise, leave the
DOLBY NR switch in the OFF position.
8. Let the set warm up for at least a few minutes
before commencing adjustments. And before
commencing the record/playback frequency
response adjustment, let the set "age" for
three to five minutes.
9. Always adjust the set in the given adjustments
order. If the order is changed, proper adjust-
ment will not be possible, and this may result
in loss of performance.
Adjustment Procedure
Deck A
1. Head azimuth adjustment
2. Playback equalizer adjustment
3. Playback level adjustment
Deck B
1. Head azimuth adjustment
2. Playback level adjustment
3. Recording/Playback frequency response
4. Recording level adjustment
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F i s . 1 1 - 1 T e s t t a p e S T D - 3 3 1 8
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