
65
CMX-5000, CU-V160
Player
1
VCO Free-running Adjustment
•
Power ON
•
None disc
Oscilloscope
V: 50mV/div.
H: 10msec/div.
DC mode
Probe (10:1)
CH1
CH2
(X)
(Y)
VC401
CDPB ASSY
2
RF Level Adjustment
6.4 ELECTRICAL ADJUSTMENT
CDPB ASSY
IC401 - pin 1
GND
START
DC voltage
2.5
±
0.2V
Player
TRMB ASSY
JA1009 (PLA)
JA1010 (PLB)
or
•
Test mode
Enter the RF ADJ mode by
pressing "C-MODE" button on the
remote control unit for servicing.
•
Move the pickup to the RF ADJ
position(disc outer circumference)
by pressing the "PLAY" button on
the remote control unit for servicing.
Oscilloscope
V: 50mV/div.
H: 10msec/div.
AC mode
Probe (10:1)
Remote control
unit for servicing
(RU-V101)
CH1
CH2
(X)
(Y)
CDPB ASSY
RF
GNDA
SIDE B
START
0.5Vp-p
TEST DISC
PLAY
LD POWER
VR
PICKUP
ASSY
Note: Adjustment of VC401 may not be made if the
SLOT-IN MECHANISM ASSY is installed.
Before adjustment, remove the SLOT-IN
MECHANISM ASSY..
Objective : To optimize the VCO free-running frequency
When not properly adjusted :
• Master Tempo does not function normally
• The output does not appear in indication and occasion
when turned a Tempo adjustment into + side.
Objective : To adjust the amplitude of playback RF signal
When not properly adjusted :
Player does not playback, track search is impossible.