Adjustment - Kenwood RXD-DV9 Service Manual

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3 7 63 1515 0
NO. ITEM
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
TAPE SPEED
(1)
(NORMAL)
III PC board adjustment.
(1)
BIAS CURRENT
FM SECTION: SELECTOR: FM
TE
L 13942296513
DISTORTION
(1)
(MONO)
(2)
TUNING LEVEL
Measurement Equipment Connections
www
.

ADJUSTMENT

OUTPUT
INPUT SETTING
SETTING
— —
SCC-1727
TCC-153
(B)
MTT-114
10kHz, -10dB
TCC-110
MTT-111
(B)
SCC-1727
3kHz
(A)
Adjust the AG for the
output of the DECK to
(B)
become -10dBs at 1kHz and
12.5kHz.
* Insert Cro2 blank tape.
Connect a
distortion
meter.
98.0MHz 1kHz,
TUNER
±40kHz dev. MONO
CIRCUIT
70dBf(ANT. input)
TIC1
17pin(Lch)
/5pin(GND)
(A)
98.0MHz MONO
—
1KHz, ±40KHz dev.
28dBf (ANT. input)
FM SG
AC 110-120V
AC 220-240V
TAPE PCB JCW4
Oscilloscope
x ao
y
6
R-PLAY
5
GND
i
4
L-PLAY
(B)
8
CASSETTE TAPE ALIGNMENT
DECK SETTING POINTS
Recording
Power : OFF
head, erase
Demagnetization,
head, capstan
cleaning, PLAY
pinch roller
PLAY
RVS
PLAY CVR2
JSR2L(L)
REC PLAY
JSR2R(R)
Q Q
3 6 7 1 3
MONO
TL3
98.0MHz
MONO
TSR1
98.0MHz
ANTENNA
AM ANT
FM 75Ω
DIGITAL
OUT
OPTICAL
S VIDEO
VIDEO
AC voltmeter
OUTPUT
u163
Frequency counter
AC 110-120V
.
AC 220-240V
RXD-DV9
2 9 9 4 2 8
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 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
FWD
45˚ straight line.
Adjust the tape speed so that 3kHz is
obtained at the center of the tape.
Record 1kHz and 12.5kHz alternately,
and adjust the bias current adjustment
potentiometer for the playback levels to
become the same.
1 5 0 5 8 2 9 9 4
Minimum distortion
ADJUST TSR1 and stop at the point
where VFD( ) goes on.
SUPER
WOOFER
PRE OUT
AUX
L
R
IN OUT
SPEAKERS
+ –
CENTER
(4 Ω)
m
L
SURROUND
(4 Ω)
AG
AC voltmeter
R
co
FRONT
(6Ω)
+
L
–
–
R
+
(A)
9 9
FIG.
0dBs = 0.775V
2 8 9 9
13