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RXD-302/A31
CASSETTE DECK SECTION
N O .
I T E M
Unless otherwise specified : each ; switch should be set as follows :
BEAT SW : OFF
I. Cassette mechanism section (REC/PB head adjustment)
Demagnetization
[1]
and cleaning
REC/PB head
[2]
azimuth
II. PC board adjustment
< 1 > Tape speed
< 2 > Playback level
Recording level
< 3 >
INSTRUMENTS CONNECTION
Oscilloscope
8
ADJUSTMENT
INPUT
OUTPUT
S E T T I N G S
S E T T I N G S
–
–
MTT-114,
TCC-153
(A)
SCC-1727
10 kHz, -10dB
MTT-111
TCC-100
(A)
SCC-1727
3 kHz, -4 dB
TCC-120
(A)
315 Hz 0dB
Put standard
test tape
(TCC-120)
into B deck.
(A)
Put standard
blank tape
into A deck.
AC voltmeter
Frequency counter
CASSETTE TAPE
ALIGNMENT
DECK SETTINGS
P O I N T
REC/PB head,
Power OFF,
erase head.
demagnetization,
capstan, pinch
cleaning play
roller
Azimuth
PLAY
adjustment
screw
PLAY
SFR201
PLAY
Dubbing and
playback.
Lch: PIN13(LA08)
Rch: PIN8(LA06)
ALIGN FOR
0dBs = 0.775V
Demagnetize the REC/PB
head by head eraser. Clean
the REC/PB head, erase
head capstan and pinch
roller with a cotton swab
immersed in alcohol.
In a setting wher the output
is maximized, adjust the
azimuth adjustment screw
so that the Lissajous figure
appearing on the oscilloscope
screen comes near to a line
slanted45° Note : The head
should be installed in such a
manner that it approaches the
tape face.
Adjust so that Frequency is
3 kHz at the center of the
tape.
Approx. -5dBm
reference level
Approx. -5dBm
reference level
(A)
PIN13
PIN8
–
IC401
MAIN UNIT
F I G .
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