Cassette Deck Adjustment - Kenwood RXD-M32MD Service Manual

RXD-M32MD
QQ
3 7 63 1515 0

Cassette deck adjustment

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.
Adjust the AG for the
BIAS output of the DECK to
(1)
CURRENT
TE
L 13942296513
X29 CN3
TEST PIN
1 L-PLAY
2 L-REC
3 GND
4 R-REC
5 R-PLAY
6 GND
7 ERASE
AC voltmeter
Oscilloscope
(B)
www
16
ADJUSTMENT
INPUT OUTPUT
SETTING SETTING
SCC-1727
TCC-153
(B)
MTT-114
10kHz, -10dB
(A)
(B)
become -20dBs
at 12.5kHz/400Hz.
(AC-224)
Frequency counter
x ao
y
. i
8
CASSETTE TAPE ALIGNMENT
DECK SETTING POINTS
Recording
Power : OFF
head, erase
Demagnetization,
head, capstan
cleaning, PLAY
pinch roller
PLAY
RVS FWD
VR101(L)
REC PLAY
VR102(R)
Q Q
3 6 7 1 3
L
A U X
I N
R
AC voltmeter
(A)
u163
.
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
45ß straight ling.
Record 400Hz and 12.5kHz alternately,
and adjust the bias current adjustment
potentiometer for the playback levels to
become the same.
ANTENNA
1 5 0 5 8 2 9 9 4
AM
GND
FM
75Ω
AG
m
co
9 9
FIG.
2 8 9 9
SPEAKERS(6–16Ω)
+
-
R L