Read Sony CX-JV10 / JAX-V10 Service Manual online
19
CX-JV10
– BD BOARD (Conductor Side) –
IC101
TP7
(VC)
(VC)
IC103
RV101
E-F Balance
(1 Track Jump)
Adjustment
E-F Balance
(1 Track Jump)
Adjustment
TP8
(RFAC)
(RFAC)
TP6
(RFDC)
(RFDC)
TP4
(FE)
(FE)
TP2
(TE)
(TE)
E-F BALANCE (1 TRACK JUMP) ADJUSTMENT
Connection:
Procedure:
1. Connect an oscilloscope to test point TP (TE) and TP (VC) on
the BD board.
2. AC is put in pushing
B
key to enter the CD test mode.
3. Put the disc (YEDS-18) in to playback the number five track.
4. Press the
4. Press the
B
key. If it plays, press the
B
key again. (The
tracking servo and the sledding servo are turned OFF)
5. Rotate RV101 on the BD board to adjust A (DC voltage) of
the center of the oscilloscope waveform becomes 0 V.
6. Press the
B
key. (The tracking servo and sledding servo are
turned ON)
Confirm A (DC voltage) at that tome is 0 V.
Confirm A (DC voltage) at that tome is 0 V.
7. To release from this mode, turn the power off.
Note:
•
Always move the optical pick-up to most inside track when exiting
from this mode. Otherwise, a disc will not be unloaded.
from this mode. Otherwise, a disc will not be unloaded.
•
Do not run the sled motor excessively, otherwise the gear can be
chipped.
chipped.
Adjustment and Connecting Location: BD board
(Conductor Side)
ADJUSTMENT AFTER CD BASE UNIT
(BU-30BD61S) IS REPLACED
(BU-30BD61S) IS REPLACED
Perform the E-F Balance (1 track jump) adjustment.
oscilloscope
BD board
TP (VC)
TP (TE)
+
–
–
Traverse Waveform
Center of
the waveform
the waveform
0 V
B
A (DC
voltage)
voltage)
level: 1.0
±
0.5 Vp-p
Traverse Waveform
0 V
A (DC
voltage)
voltage)
Tracking servo
Sled servo
OFF
Tracking servo
Sled servo
ON
Adjustment and Connecting Location:
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