RXD-303/353/503/553/653/A33/A53
11
ADJUSTMENT
RVS
FWD
NO.
ITEM
INPUT SETTING
OUTPUT
SETTING
CASSETTE TAPE
DECK SETTING
ALIGNMENT
POINTS
ALIGN FOR
FIG.
0dBs = 0.775V
I Cassette mechanism unit (Adjustment of the REC / PLAY head)
(1)
Demagnetization
and cleaning
Power : OFF
Demagnetization,
cleaning, PLAY
Recording
head, erase
head, capstan
pinch roller
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.
(2)
Azimuth of the
REC / PLAY
head
SCC-1727
TCC-153
MTT-114
10kHz, -10dB
(B)
PLAY
Adjust the output to maximum and
adjust the azimuth adjustment screw
for the Lissajours waveform pattern of
the oscilloscope to become close to a
45ß straight line.
II PC BOARD ADJUSTMENT
(1)
TAPE SPEED
(NORMAL)
TCC-110
MTT-111
SCC-1727
3kHZ
(B)
PLAY
VR5
Adjust the tape speed so that 3kHz is
obtained at the center of the tape.
III PC board adjustment.
(1)
PLAYBACK
LEVEL
MTT-150
400Hz
(B)
PLAY
VR 3 (L)
VR 4 (R)
Adjust the playback output to —2.5dBs.
MTT-256, SCC-1727
315Hz
Adjust the playback output to —5.5dBs.
MTT-256U, TCC-120
315 Hz
Adjust the playback output to —1.5dBs.
(2)
BIAS CURRENT
(A)
Adjust the AG for the
output of the DECK to
become 12.5KHz —20dBs.
400Hz/12.5kHz (AC-224)
(B)
REC PLAY
VR 1 (L)
VR 2 (R)
Record 400Hz and 12.5kHz alternately,
and adjust the bias current adjustment
potentiometer for the playback levels to
become the same.
AC 220-
240V~
AC 110-
120V~
GND
FM
75
AM
ANTENNA
+
-
FRONT
SPEAKERS
(6-16 )
R
L
L
R
DVD/VIDEO INPUT
+
-
SURROUND
SPEAKERS
(8-16 )
R
L
ON
OFF
SURROUND
Oscilloscope
AC voltmeter
Frequency counter
AC voltmeter
AG
{
(A)
(B)
X13, CN1
L-PLAY
R-PLAY
GND
28
29
30
31
Measurement Equipment Connections
Cassette Deck adjustment