19
CX-JDS22/JDS33
E-F Balance Adjustment
Connection:
Procedure:
1. Connect an oscilloscpe to test point TP (TEO) and TP (VC)
on the BD board.
2. Set the FUNCTION to “CD”.
3. AC is put in pushing
N
1)
or
nN
2)
button to enter the
CD test mode.
4. Put the disc (YEDS-18) in to playback the number five track.
5. Press the
N
1)
or
nN
2)
button. If it plays, press the
N
1)
or
nN
2)
button again. (The tracking servo and the
sledding servo are turned OFF)
6. 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%
1) JDS22
2) JDS33
7. Press the
N
1)
or
nN
2)
button. (The tracking servo and
sledding servo are turned ON)
8. 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.
Checking Location:
BD board (Side B)
Checking Location:
– BD BOARD (Side B) –
+
–
BD board
oscilloscope
TP (TEO)
TP (VC)
Traverse Waveform
0V
Center of
the waveform
B
A (DC
voltage)
level: 1.0
±
0.5 Vp-p
Traverse Waveform
0V
Tracking servo
Sled servo
OFF
Tracking servo
Sled servo
ON
C (DC
voltage)
IC251
IC301
IC101
IC303
TP
(RFACO)
TP
(VC)
TP
(FEO)
TP
(RFDCO)
TP
(TEO)
All manuals and user guides at all-guides.com