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3 7 63 1515 0
NO.
ITEM
Unless otherwise specified, set the respective switches as follows:
TAPE : NORMAL
I
Cassette mechanism unit (Adjustment of the REC / PLAY head)
Demagnetization
(1)
and cleaning
Azimuth of the
(2)
REC / PLAY
head
II
PC BOARD ADJUSTMENT
TAPE SPEED
(1)
(NORMAL)
III
PC board adjustment.
PLAYBACK
(1)
LEVEL
TE
L 13942296513
(2)
BIAS CURRENT
RECORDING
(3)
LEVEL
Measurement Equipment Connections
www
AC voltmeter
.
ADJUSTMENT
OUTPUT
INPUT SETTING
SETTING
DOLBY : OFF
—
—
SCC-1727
TCC-153
(B)
MTT-114
10kHz, -10dB
TCC-110
MTT-111
(B)
SCC-1727
3kHZ
MTT-150
400Hz
MTT-256, SCC-1727
(B)
315Hz
MTT-256U, TCC-120
315 Hz
(A)
Adjust the AG for the
output of the DECK to
(B)
become 12.5KHz –20dBs.
400Hz/12.5kHz (AC-224)
(A)
Adjust the AG for the
(B)
output of the DECK to
become 1kHz –20dBs.
LINE
REC
PLAY
IN
OUT
L
R
AG
x
ao
y
i
(A)
8
CASSETTE TAPE
ALIGNMENT
DECK SETTING
POINTS
Recording
Power : OFF
head, erase
Demagnetization,
head, capstan
cleaning, PLAY
pinch roller
PLAY
RVS
PLAY
VR7
VR 1 (L)
PLAY
VR 2 (R)
Q Q
3
6 7
1 3
VR 3 (L)
REC PLAY
VR 4 (R)
VR 5 (L)
REC PLAY
VR 6 (R)
SYSTEM
CONTROL
AC voltmeter
Oscilloscope
u163
.
(B)
X-S300
2 9
9 4
2 8
ALIGN FOR
0dBs = 0.775V
Demagnetize the REC / PLAY head
with the head eraser. Clean the REC /
PLAY head, erase head, capstan and
pinch roller using a cotton swab slightly
damped with alcohol.
Adjust the output to maximum and
adjust the azimuth adjustment screw
for the Lissajours waveform pattern of
the oscilloscope to become close to a
FWD
45˚ straight ling.
Adjust the tape speed so that 3kHz is
obtained at the center of the tape.
Adjust the playback output to –1dBs.
Adjust the playback output to –4dBs.
1 5
0 5
8
2 9
9 4
Adjust the playback output to 0 dBs.
Record 400Hz and 12.5kHz alternately,
and adjust the bias current adjustment
potentiometer for the playback levels to
become the same.
–20 dBs
AC 220 -
AC 110 -
240V ~
120V ~
m
co
Frequency counter
9 9
FIG.
2 8
9 9
3
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