Adjustment - Kenwood RXD-DV90 Service Manual

RXD-DV90
CASSETTE DECK SECTION
NO ITEM
1. Cassette mechanism section (REC/PB head adjustment)
Demagnetization
[1]
and cleaning
azimuth
REC/PB Head
[2]
azimuth
2.PC board adjustment
[1] Tape speed
PLAY BACK
[2]
LEVEL
[3] REC BIAS
Frequency
REC BIAS
[4] Current
AMPLIFIER SECTION
NO ITEM
IDLE
[1]
CURRENT
Measurement Equipment Connections
FM SG
AUX IN
AC voltmeter
(A)
4

ADJUSTMENT

INPUT OUTPUT
SETTINGS SETTINGS
– –
MTT-114
(B)
TCC-153
AUX OUTPUT
10KHz,-10dB
MTT-111
(B)
TCC-100
AUX OUTPUT
3KHz, -4dB
(B)
MTT-130
AUX OUTPUT
REC/PB (B)
AUX OUTPUT
TEST TAPE
AC-224
REC/PB
(B)
TEST TAPE
AC-224 AUX OUTPUT
(A)
AUX IN: 50mV
400Hz
INPUT OUTPUT
SETTING SETTING
NO SIGNAL
–
VR(Min.)
R L
IN
VIDEO/AUX
OUT
ANTENNA
FM 75Ω AM
GND
SUB
WOOFER
PRE OUT
SPEAKERS
SURROUND
FRONT SPEAKERS (6Ω)
(8Ω)
L
L
R
CENTER
R
(6Ω)
– + – +
AG
AUX OUT
CASSETE TAPE ALIGNMENT
DECK SETTINGS POINT
Power OFF REC/PB head, Demagnetize the REC/PB head by head
demagnetization, erase head.
cleaning play capstan,pinch head capstan and pinch roller with a
roller
Azimuth
adjustment
PLAY
screw
PLAY VR901
PLAY –
REC T901
VR903(L)
REC/PLAY
VR904(R)
AMPLIFIER ALIGNMENT
SETTING POINT
AUX VR201(L)
FUNCTION VR202(R)
COMPONENT
VIDEO OUTPUT
Cr
VIDEO
OUTPUT
DIGITAL
OUT
OPTICAL
Cb
AC 110- AC 220-
120V 240V
Y
S-VIDEO
AC voltmeter
Oscilloscope
(B)
ALIGN FOR
0dB = 400mV
eraser.Clean the REC/PB head,erase
cotton awab immersed in 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.
Adjust the tape speed so that 3kHz is
obtained at the center of the tape.
(Frequency of 3KHZ +/- 40Hz)
Playback output to 400mV +/- 50mV
CN902 Pin1 and Pin2(GND)
Ensure that the Frequency Counter
Adjust T901 to obtain this of 105KHz
+/- 5KHz
Record 400Hz and 10.0kHz alternately,
and adjust the bias current adjustment
1.TP1(+) and TP2(GND)
Adjust VR903(L-CH) to obtain this of 3.5mV
2.TP3(+) and TP4(GND)
Adjust VR904(R-CH) to obtain this of 3.5mV
* potentiometer for the playback levels to
become the same. (Spec.: +/-5dB)
ALIGN FOR
1.R234 Side Pin1 and Pin3
Adjust VR201 to obtain this of +8 mV
1.R301 Side Pin1 and Pin3
Adjust VR202 to obtain this of +8 mV
(Spec.: +8mV +/-3mV)
# Idle Current: 20mA
Frequency counter