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Adjustment - Kenwood CD-423M-S Service Manual

Multiple compact disc player
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CD-423M/423M-S/424M/DPF-J3030/J5030
QQ
3 7 63 1515 0
No.
ITEM
1. With pressing the REPEAT KEY, turn the power on to enter the test mode.
2. Set the Test disc to Disc NO. 1.
3. Close the door.
FOCUS ERROR
1
BIAS
LASER CURRENT
2
CHECK
Note:
Type 4 disc :SONY YEDS-18 Test Disc or equivalent.
LPF : Around 47kΩ + 390 pF or so.
FIG. (d)
TE
L 13942296513
www
8

ADJUSTMENT

INPUT
OUTPUT
SETTING
SETTING
Connect an
Test disc
oscilloscope as
Type4
follows.
/KTD-02
CH1:RF (CN2-1)
Connect the DC
Test disc
voltmeter to LASER
Type4
CURRENT CHECK
LAND on X32.
x
ao
y
.
i
PLAYER
SETTING
Press the PLAY
/PAUSE key .
Confirm that the
display is "05".
Press the PLAY
/PAUSE key to
check that the
display is 03 or 05.
¶ RF signal in test mode (PLAY).
¶ Perform the tangential and focusing offset are focused into
RF signal
one point on the display. The crossing points above and
below the center shall also be looked clearly. (FE BIAS)
Q Q
3
6 7
u163
2 9
9 4
8
ALIGNMENT
ALIGN FOR
POINT
FE BIAS
Optimum eye
VR1
pattern
-
0.5±0.2V
1 3
1 5
0 5
8
2 9
m
co
.
2 8
9 9
FIG.
(d)
9 4
2 8
9 9

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Cd-423mDpf-j3030Dpf-j5030Cd-424m