HHB CDR-850 Service Manual page 56

CDR-850
6.5 ADJUSTMENT 2 (SERVO SYSTEM ADJUSTMENT)
For servo adjustment, set the INPUT SELECTOR to OPTICAL.
OPT
Use the RECORD and REC MUTE buttons to make the adjustments.
To register an adjustment, press the (SKIP ID) SET button.
To reset the adjusted values to the initial settings, press and hold the
(SKIP ID) CLEAR button for 4 seconds.
6.5.1 Focus Offset Adjustment
Test Point
Adjustment Point
Adjustment Value
[Procedure]
(1) Press the AUTO/MANUAL button until "01 F4" appears on the FL display.
(2) Adjust with the RECORD and REC MUTE buttons until the value for Pin 6 of CN354 is 0 mV ± 10 mV.
(3) Press the SET button to register the adjustment.
Once the adjustment is registered with the SET button, "?" on the FL display will disappear.
FE
10 : 1
VC
10:1 probe
56
CN354 - pin 6 (FE)
RECORD button and REC MUTE button
0 mV ± 10 mV
Oscilloscope
SERVO DIGITAL ASSY
CN354 (TP201)
1
6
CN354
1 : RF
CN102
2 : TE 6
3 : TEIN
4 : VC
1
5 : FEIN
6 : FE
CN102
1 : VC
2 : TESTEQRFP
3 : TE
4 : MPP
5 : MPXOUT
6 : FMOUT
Fig. 6 Adjustment points