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10.2
ELECTRICAL
ADJUSTMENT
Adjustment Conditions
1.
The
mechanical
adjustments
must
be com-
pleted first.
2.
The head must be cleaned and demagnetized.
8.
Allow the deck to age for at least a few min-
utes before commencing
any electrical adjust-
ments.
4.
The reference signal is OdB=1Vrms.
5.
Connect a 50 kilo-ohm
(or between
47 to 52
kilo-ohm)
load
resistance
to
the
OUTPUT
terminals.
6.
Unless otherwise specified, the switches listed
below are left in the positions indicated.
DOLBY NR
OFF
TAPE SELECTOR
NORM
Test Tapes
STD-331B
Playback adjustments
(See Fig. 10-1)
STD-608A
NORMAL
blank tape
STD-603
CrO, blank tape
STD-610
METAL blank tape
FWD azimuth
adjustment screw
REV azimuth
adjustment screw
Fig. 10-2
Head azimuth adjustment
CT-l160OR,
CT-SS5R
List of Adjustments
Se
oe
er
e
Head azimuth adjustment.
Play back equalizer check.
Playback level adjustment.
Leader tape detector adjustment.
Level meter check.
Erasure current adjustment.
Recording
and
playback
frequency
response
adjustment.
Recording level adjustment.
OdB: 31SHz, 160nwbim
e Due to "'edge effect'', compensate the right changed by ~1d8 at
63Hz.
250 315 500
2k
4k
63K
10k 12k 15k
Fig. 10-3
Allowable playback frequency response zone
29
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