Cassette Deck Adjustment; System Connections - Kenwood RXD-M33 Service Manual

RXD-M33/M33MD

Cassette Deck adjustment

INPUT
No ITEM
SETTING
ø. CASSETTE MECHANISM UNIT
Demagnetiza
< 1 > tion and
cleaning
SCC-1727
Azimuth of
TCC−153
the
< 2 > MTT−114
REC/PLAY
10kHz,
head
− 10dB
TCC−110
MTT−111
TAPE SPEED
< 3 >
SCC−1727
(NORMAL)
3kHz
¿. PC BOARD ADJUSTMENT
(B)
Connect the
AG to jack.
BIAS
400Hz: -
< 1 >
CURRENT
20dBs
12.5kHz: -
20dBs

SYSTEM CONNECTIONS

Fig.1
ADJUSTMENT
OUTPUT DECK
SETTING SETTING
Demagnetizat
ion: POWER
– OFF
–
Cleaning:
PLAY
(A) PLAY
(A)
PLAY
REC and
(A)
PLAY
ANTENNA
+
AM
L
-
AUX
FRONT
INPUT SPEAKERS
GND
(6-16 W)
-
L
R
FM
+
75 Ω
R
AC voltmeter AG
(B)
ALIGNMENT
POINT
Demagnetize the REC / PLAY head
Recording
with the head eraser. Clean the REC
head, erase
/ PLAY head, erase head,capstan and
head,capstan
pinch roller using a cotton swab
pinch roller
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
RVS FWD 45° straight line.
Check the tape speed so that
Trimming pot
3kHz(±2%) is obtained at the center
in the motor.
Record 400Hz and 12.5kHz
alternately, and adjust the bias
VR 1 (L)
current adjustment potentiometer for
VR 2 (R)
the playback levels to become the
X28 CN1
(TAPE Lch),22 pin
(TAPE Rch),20 pin
Oscilloscope AC voltmeter
(A)
0dBs=0.775V
ALIGN FOR FIG.
Fig.1
Fig.1
of the tape.
Fig.1
same.
Frequency counter
13