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1, Focus Offset Adjustment
@ Objective
Sets the DC offset for the focus error amp.
@Symptom when outof | The mode! does not focus in and the RF signal is dirty.
adjustment
@ Measurement instru-
Connect the oscilloscope to
@ Player state
Test mode, stopped
ment connections
TPL, Pin
6(FCS. ERR)
(just the Power switch on)
[Settings] SmVidivision
| *Adistment location | VR103 (FCS. OFS)
10 ms/division
DC mode
@ Disc
None needed
[Procedure]
Adjust VR103 (FCS. OFS) so that the DC voltage at TP1, Pin 6 (FCS. ERR) is —150+50 mV.
40
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