Adjustment - Kenwood RXD-803 Service Manual

CD player adjustment
No. ITEM
SETTINGS
1. While pressing the "DISC 3" key, turn the power on to enter the test mode.
2. Load a disc on disc 1 tray.
LASER CURRENT Test disc
1
CHECK
Note:
Type 4 disc : SONY YEDS-18 Test Disc or equivalent.
LPF: Around 47 kΩ+ 390 pF or so.
Step 1~4 are in Test Mode.
Cassette Deck adjustment
NO. ITEM INPUT SETTING
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.
PLAYBACK MTT-256, SCC-1727
(1)
LEVEL
MTT-256U, TCC-120
Adjust the AG for the
(2) BIAS CURRENT output of the DECK to
become 12.5KHz -20dBs.
400Hz/12.5kHz (AC-224)
Measurement Equipment Connections
+
-
R L
FRONT
SPEAKERS
(6-16 )
SUPER
WOOFER
PRE OUT
CENTER SPEAKER
( 6-16 )
- +
L
R
AG
AC voltmeter
SURROUND SPEAKERS
(12-16 )
(A)

ADJUSTMENT

INPUT OUTPUT
SETTINGS
Connect the DC
voltmeter to
Type 4 CN6(pin1 and 2)
on X32.
OUTPUT CASSETTE TAPE
SETTING
Demagnetization,
SCC-1727
TCC-153
(B)
MTT-114
10kHz, -10dB
TCC-110
MTT-111
(B)
SCC-1727
3kHZ
MTT-150
400Hz
(B)
315Hz
315 Hz
(A)
(B)
ANTENNA
AM
GND
FM
75
6CH.
INPUT
L
R
FRONT
SURROUND
CENTER
SUB
WOOFER
X13, CN1
Oscilloscope
DIGITAL
OUT
OPTICAL
31
L-PLAY
AC 110-
30
120V~
AC 220-
29 240V~
R-PLAY
28
GND
(B)
RXD-803/803E/853/853E/A83
PLAYER ALIGNMENT
SETTINGS
Press the
PLAY/PAUSE key,
then confirm that the
display is 03 or 05.
ALIGNMENT
DECK SETTING POINTS
Recording
Power : OFF
head, erase
head, capstan
cleaning, PLAY
pinch roller
PLAY
RVS FWD
PLAY VR5
VR 3 (L)
PLAY
VR 4 (R)
VR 1 (L)
REC PLAY
VR 2 (R)
AC voltmeter
Frequency counter
ALIGN FOR
POINTS
– 0.5±0.2V
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 line.
Adjust the tape speed so that 3kHz is
obtained at the center of the tape.
Adjust the playback output to -2.5dBs.
Adjust the playback output to -5.5dBs.
Adjust the playback output to -1.5dBs.
Record 400Hz and 12.5kHz alternately,
and adjust the bias current adjustment
potentiometer for the playback levels to
become the same.
FIG.
FIG.
11