25
CX-LMN5
Checking Location:
BD board (Side B)
+
–
BD board
TP (TE)
TP (VC)
oscilloscope
Traverse Waveform
0V
B
level: 1.0
±
0.5 Vp-p
Center of
the waveform
A (DC
voltage)
Traverse Waveform
0V
Tracking servo
Sled servo
ON
C (DC
voltage)
Tracking servo
Sled servo
OFF
6.
Press the (CD)
u
button. (The tracking servo and sledding
servo are turned ON)
Rotate RV101 on BD board and adjust the C (DC voltage)
is almost equal to the A (DC voltage) in step 4.
7. To exit from this mode, turn the power off.
Notes:
• Always move the optical pick-up to most inside track when
exiting from this mode. Otherwise, a disc will not be unloaded.
• Do not run the sled motor excessively, otherwise the gear can
be chipped.
E-F Balance Adjustment
Connection:
Procedure:
1.
Connect an oscilloscpe to test point TP (TE) and TP (VC) on
the BD board.
2.
AC is put in pushing
u
(CD) button to enter the CD test
mode.
3.
Put the disc (YEDS-18) in to playback the number five track.
4.
Press the (CD) button. If it plays, press the (CD)
u
(CD) button. (The tracking servo and the
button again. (The tracking servo and the sledding servo are
turned OFF)
5.
Check the level B of the oscilliscope's waveform and the A
(DC voltage) of the center of the Traverse waveform.
Confirm the following :
A/B x 100 = less than
±
10%
Checking Location:
– BD BOARD (Side B) –
u
IC101
TP7
(VC)
IC103
RV101
E-F Balance
Adjustment
TP8
(RFAC)
TP6
(RFDC)
TP4
(FE)
TP2
(TE)
www.freeservicemanuals.info
9/6/15
Published in Heiloo, Holland.