Pioneer PDR-L77 Service Manual page 54

PDR-L77
6.5 ADJUSTMENT 2 (SERVO SYSTEM ADJUSTMENT)
For servo adjustment, set the INPUT SELECTOR to DIGITAL.
"DIGITAL" segment lights this time.
INPUT
SELECTOR
Use the RECORD button and the REC MUTE button to make
the adjustments.
•
To register an adjustment, press the SET button.
SKIP ID
SET
To reset the adjusted values to the initial settings, press and hold the
CLEAR button for 4 seconds.
SKIP ID
6.5.1 Focus Offset Adjustment
Test Point
Adjustment Point
Adjustment Value
Symptom when out of
adjustment
[Procedure]
(1) Press the AUTO/MANUAL button until "01 F4" appears on the FL display.
(2) Adjust with the RECORD button and the REC MUTE button until the value for Pin 6 of CN102 is 0 mV
(3) Press the SET button to register the adjustment.
Once the adjustment is registered with the SET button, "D.VOL" on the FL display lights.
FE
10 : 1
VC
10:1 probe
54
‡
REC
CLEAR
CN102 - pin 6 (FE)
RECORD button and REC MUTE button
0 mV 10 mV
The model does not focus-in
Oscilloscope
CD-R CORE ASSY
Fig. 6 Adjustment points
CN102
6
1
1 : RF
2 : VC
3 : MPP
4 : TE
5 : VC
6 : FE
10 mV.