Sony CDX-505RF - Compact Disc Changer System, Руководство по обслуживанию

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SECTION 3
ELECTRICAL ADJUSTMENTS
•
FOCUS GAIN ADJUSTMENT
(COARSE ADJUSTMENT)
This adjustment is to be performed when replacing the following
parts.
•
Optical Pick-up Block
•
RV14
•
When gain is lowered...
The set does not play because of no focus operation.
•
When gain is highered...
Operation noise is heard due to a scratch or a dust, then opera-
tion will be unstable.
Procedure:
[RF BOARD] – Conductor Side –
RV14
IC11
IC51
CNJ12
1. Set RV14 (RF board) to the standard position.
2. Check that there is not an abnormal amount of operation noise
(white noise) from the 2-axis devise. If there is, turn RV14
slightly clockwise.
[RF BOARD] – Conductor Side –
MIN side
(low gain)
MAX side
(high gain)
RV14 standard position