Kenwood RXD-M52-L, Руководство по обслуживанию, Страница: 7 / 26

RXD-M52
7
CD section
NO. ITEM
INPUT
SETTINGS
OUTPUT
SETTINGS
CD PLAYER
SETTINGS
ALIGNMENT ALIGN FOR FIG.
TEST MODE : While pressing the CD PLAY/PAUSE key, plug the power cord into the AC power wall output.
Load the TEST DISC.
[1]
LASER CURRENT
CHECK Test disc
type 4
Connect the DC voltmeter
between
3
and
4
of CN4
on X29.
Press the PLAY/PAUSE
key to check that the
display is 03 or05.
—
50
±
20mA
[2]
FOCUS ERROR
BIAS
(Set up vertically)
Test disc
type 4
Connect an oscilloscope
as follows.
Press the PLAY/PAUSE
key . Confirm that the
display is 05.
FE BIAS
VR 1
(V/H version only)
Optimum eye pattern
[3]
FOCUS ERROR
BIAS
(Set up horizontally)
Test disc
type 4
Connect an oscilloscope
as follows.
CH1:RF(X29,CN4,
1
)
GND:VC(X29,CN4,
2
)
CH1:RF(X29,CN4,
1
)
GND:VC(X29,CN4,
2
)
Press the PLAY/PAUSE
key . Confirm that the
display is 05.
FE BIAS
VR 2
Optimum eye pattern
Note:
Type 4disc: SONY YEDS-18 Test Disc or equivalent.
Keep the step of adjustment.
+
-
+
-
CASSETTE DECK
NO. ITEM
INPUT
SETTINGS
OUTPUT
SETTINGS
CASSETTE DECK
SETTINGS
ALIGNMENT ALIGN FOR FIG.
Unless otherwise specified, set the respective switches as follows:
TAPE: NORMAL INPUT: AUX IN OUTPUT: AUX OUT 0dBm=0.775V
ø
. Cassette mechanism (REC/PB head adjustment)
Demagnetization
and cleaning
— —
(POWER OFF)
demagnetization
(PLAY)
cleaning
REC/PB head
erase head
capstan
pinch roller
Demagnetize the REC/PB head by
head eraser. Clean the REC/PB head
,eraser head, capstan and pinch
roller with a cotton swab immersed
in alcohol.
REC/PB head
azimuth
TCC-153
MTT-114
10kHz,-10dB
(B) PLAY
Adjust the output to maximum and
adjust the azimuth adjustment
screw for the Lissajous waveform
pattern of the oscilloscope to
become close to a 45ß straight line.
¿
. Capstan motor adjustment
Tape speed
(NORMAL)
TCC-110
MTT-111
3kHz
(B) PLAY
VR.
inside motor
Adjust so that the frequency 3kHz
at the center of the tape.
¡ . PC board adjustment
Playback level TCC-130 (B) PLAY VR1(Lch),VR2(Rch) -2.5dBm
(B) REC PLAY
Bias current
TCC-108
12.5kHz
-24dBm
(A)
VR3(Lch)
VR4(Rch)
-24dBm
Measurement equipment connection
FWD
RVS
{
(A) (B)
AC voltmeter AC voltmeter
Oscilloscope
Distortion meter
AG
ADJUSTMENT
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