57
CDR-850
[Procedure]
(1) Press the AUTO/MANUAL button so that "02 F3" appears on the FL display.
(2) Press the FINALIZE button for focus-in.
(3) Press the PLAY button for CAV-servo spindle kick (the status where the spindle rotates with the focus servo on and tracking servo off).
(4) Adjust with the RECORD and REC MUTE buttons until the value to be reached is obtained.
(5) Press the SET button to register the adjustment.
Once the adjustment is registered with the SET button, "?" on the FL display will disappear.
(6) Press the STOP button to stop the unit.
Note: For adjustment, use the following circuits.
Note: Adjustment must be done around mid-radius on a disc.
6.5.2 M-S Mix Ratio Adjustment
CN102 - pin 3 (TE) and pin 4 (MPP)
Test Point
Adjustment Point
Adjustment Value
RECORD button and REC MUTE button
Adjust until the value of the output signals from pin 3 (TE) and pin 4 (MPP) of CN102 are the same,
or the differential output of these signals is minimal.
(1) Press the AUTO/MANUAL button so that "03 F6" appears on the FL display.
(3) Press the SET button to register the adjustment.
Once the adjustment is registered with the SET button, "?" on the FL display will disappear.
Note: Perform the adjustment in Stop mode.
This adjustment is possible with the low-pass filter used in adjustment 5 above attached.
6.5.3 Tracking Offset Adjustment
CN354 - pin 2 (TE) or CN102-pin 3 (TE)
Test Point
Adjustment Point
RECORD button and REC MUTE button
±
10 mV
Oscilloscope
10:1 probe
10 : 1
10 : 1
TE
CH1
CH2
39k
Ω
39k
Ω
VC
MPP
0.001
µ
F
0.001
µ
F
Oscilloscope
10:1 probe
10 : 1
TE
VC
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