Sharp VL-PD3S Service Manual page 15

VL-PD3S/H/E
8-3. How to operate with the circuit board without the cassette controller assembly.
In this method, if the procedure is followed incorrectly there is danger of damaging the mechanism and the tape, so except in special
cases, such as when measuring the VSR torque, do not perform this procedure. Normally operate this unit with the cassette controller
assembly attached.
Be sure to follow each caution mentioned.
(1) Apply DC3V to the loading motor to set the EJECT mode.
(2) Remove the down switch angle.
1) In Fig. 5 remove the screws
Note) The loading motor solder joint (part T, Fig. 5) of DEW sensor
FPC applied to the down switch angle is not removed. After the
down switch angle is removed, take care so that the DEW
sensor FPC is not broken.
(3) Surely secure the moving piece
6 with the aid of adhesive tape so that the switch is turned on.
(4) Install the down switch angle.
Note) To set the REC mode, press the pin of recognition switch
required in other modes).
(5) Set the test mode (T-01) with the adjustment remote controller
without loading the tape. Thereby the mechanism operation is
enabled with the mode key.
(6) To eject, remove the tape (3).
8-4. Phase matching
For the parts listed below, match the phases as shown in Fig. 7.
(1) AHC cam (2) MODE switch (3) Main cam (4) Sub cam
Note) Before disassembling, check the marker positions carefully.
Note) When installing the engagement gear, make sure that the main cam
and sub cam phase matching hole aligns with the chassis hole.
Note) After phase matching, turn the MODE switch by hand and confirm
that it turns almost one complete turn. (After checking, return it to
its original position.)
Phase matching hole
(for chassis)
Phase matching
mark
MODE switch
Phase matching
mark
and Q .
P
R of down switch as shown in Fig.
AHC cam
Main cam Coupling gear
Phase matching hole
(for chassis)
T
P
S (not
Q
Fig. 5. STANDBY mode
Down switch angle
Phase matching hole
(for chassis)
Sub cam
Fig. 7
8-3
VL-PD3S/H/E
S
R Down switch moving
piece
R Down switch moving
piece
Adhesive tape
Adhesive tape
Fig. 6