Sharp VC-M23SM Servicehandbuch Seite 6

2-3 PRECAUTIONS INREASSEMBLING | Reger OR Sch," eT agar aches a
ct oa.
win
iaeu. .,lnitial setting.is indispensable before placing the cassette controller in the mechanism. The initialsetting isumade,
ed . Ways; electrical and mechanical. es i
Electrical setting:
Make a short-circuit between TP703 and TP704 and be sure that the mechanism is back to its initial setting position (*1).
Now place the cassette controller in position.(This method is used when the mechanism has been already set on its PWB.)
Pulley feed gear
Casecon
drive gear
Drive angle of
cassette control
Porgy
Mechanical setting:
Turn the loading motor's pulley feed gear using
a screwdriver and be sure that the mechanism
is back to its initial setting position (*1). Now
place the cassette controller in position. (This
method is applicable for the mechanism alone.)
COUPLING THE MECHANISM TO THE PWB
Match the mechanism's projections with the two symbols (round reference and oval sub-reference) on the main PWB. Place
the mechanism straight down in position with due care so that the mechanism chassis's outer edges should not damage
any parts nearby. .
Tighten up the two screws (one for fixing the mechanism and the head amplifier shield, the other on the main PWB's
soldering side and located near the loading motor) to fix the mechanism and main PWB. Reconnect the FFC cables (AN
and AS} and harness (AB) between the mechanism and main PWB.
Parts to pay attention to:
Startand endsensors Q851 and Q852
Rec tip switch $851
Take special care of the AE connector (board to board) between the mechanism and main PWB.
ae
END SENSOR
REC TIP SW
AC Connector
START SENSOR
6