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MDX-G3
QQ
3 7 63 1515 0
Cassette Deck adjustment
No
ITEM
ø. CASSETTE MECHANISM UNIT
Demagneti-
< 1 >
zation and
cleaning
Azimuth of
the
< 2 >
REC/PLAY
head
TAPE SPEED
< 3 >
(NORMAL)
¿. PC BOARD ADJUSTMENT
BIAS
< 1 >
CURRENT
TE
L 13942296513
Tuner adjustment
I T E M
N o .
FM SECTION :
1
TUNING LEVEL
SYSTEM CONNECTIONS
Fig.1
www
.
10
ADJUSTMENT
INPUT
OUTPUT
SETTING
SETTING
SETTING
Demagneti-
–
POWER OFF
–
Cleaning:
SCC-1727
TCC−153
MTT−114
(B)
10kHz,
− 10dB
TCC−110
MTT−111
(B)
SCC−1727
3kHz
(C)
Connect the
AG to jack.
REC and
400Hz: -
(B)
20dBs
12.5kHz: -
20dBs
I N P U T
S E T T I N G S
SELECTOR : FM
(A)
98.0MHz MONO
1kHz, ±75kHz dev.
37.2dBf (ANT. input)
2
1
RF
VC
LD
CN23
AC voltmeter
AG
x
ao
y
i
Dummy antenna
(C)
8
DECK
ALIGNMENT
POINT
Recording
zation:
head, erase
head,capstan
pinch roller
PLAY
PLAY
RVS
FWD
Trimming pot
PLAY
in the motor.
VR 1 (L)
PLAY
VR 2 (R)
Q Q
3
6 7
1 3
OUTPUT
RECEIVER
S E T T I N G S
S E T T I N G S
MONO
(B)
98.0MHz
1 2
+5V
CN25
AM
ANTENNA
X09(E/7) P301
u163
.
FM-MPX-SG
FM-MPX-SG
POLAR SG
(A)
2 9
9 4
2 8
0dBs=0.775V
ALIGN FOR
Demagnetize the REC / PLAY head
with the head eraser.Clean the REC
/ PLAY head, erase head,capstan and
pinch roller using a cotton swab slight-
ly 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
45° straight line.
Check the tape speed so that
3kHz(±2%) is obtained at the center
of the tape.
Record 400Hz and 12.5kHz alternate-
ly, and adjust the bias current adjust-
ment potentiometer for the playback
levels to become the same.
1 5
0 5
8
2 9
ALIGNMENT
ALIGN FOR F I G .
P O I N T S
Adjust VR1
and stop at the
VR301
point where
(X09)
ED501(TUNED)
goes on.
X28 CN1
(TAPE Rch),22 pin
m
(TAPE Lch),20 pin
co
Oscilloscope
AC voltmeter
9 9
FIG.
Fig.1
Fig.1
9 4
2 8
9 9
Fig.1
Frequency counter
(B)
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