Adjustment 2 (Servo System Adjustment); Focus Offset Adjustment - Pioneer pdr-w739 Service Manual

6.5 ADJUSTMENT 2 (SERVO SYSTEM ADJUSTMENT)

For servo adjustment, set the INPUT SELECTOR to OPTICAL.
COPY MODE CHECK ERASE FINALIZE
Use the REC LEVEL Knob to make the adjustments.
‡ REC LEVEL
PUSH ON-OFF
To register an adjustment, press the REC LEVEL Knob.
‡ REC LEVEL
PUSH ON-OFF
To reset the adjusted values to the initial settings, press and hold the
COPY MODE button for 4 seconds.
And, the SYNCHRO key is pushed afterwards.
The power supply is turned off afterwards, and the power supply is
turned on again. And, the readjusted thing.
COPY MODE CHECK ERASE FINALIZE

6.5.1 Focus Offset Adjustment

Test Point CN102 - pin 6 (FE)
REC LEVEL knob
Adjustment Point
Adjustment Value
Symptom when out of
adjustment
[Procedure]
(1) Press the AUTO SPACE button until "CDR 01fff4∗∗" appears on the FL display.
(2) Adjust with the REC LEVEL knob until the value for Pin 6 of CN102 is 0 mV ± 10 mV.
(3) Press the REC LEVEL knob to register the adjustment.
Once the adjustment is registered with the REC LEVEL knob, " ERASE " on the FL display will disappear.
FE
10 : 1
VC
10:1 probe
INPUT AUTO SPACE SYNCHRO
INPUT AUTO SPACE SYNCHRO
0 mV ± 10 mV
The model does not focus-in
Oscilloscope
CD-R CORE ASSY
Fig. 6 Adjustment points
PDR-W739
CN102
6
1
1 : RF
2 : VC
3 : MPP
4 : TE
5 : VC
6 : FE
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