Sony DSR-250, Service Manual

Page: 193 / 322

5-35
2-1-1. ASSEMBLY/DISASSEMBLY OF CASSETTE COMPARTMENT
For details on disassembling the mechanism deck (R mechanism), refer to the Service Manual of the main unit in which the R mechanism is
mounted.
Before attaching or removing the cassette compartment, check the position of “L cassette”.
2-1-2. HOW TO LOAD/UNLOAD
[Using the regulated power supply]
Note: Make sure to remove the connector of the cam motor from the board
of the main unit and apply +5V current.
[Manual: No cam motor]
Note:
Remove the cam motor from the motor holder while referring to
“Information” on page 5-34.
5-2-1. PARTS REPLACEMENT AND PREPARATION FOR ADJUSTMENT
When attaching the cassette compartment,
move the reel selector slider in the direction of
arrow
B to check the position of “L cassette”.
Bent portion C
Positioning pin
Bent portion C
SL shifter
Screw
Screw
Positioning pin
Cassette compartment
(Remove in the direction of arrow
A .)
SL shifter
Bent portion C of the reel
selector slider should be
securely hooked on the
bent portion of the SL
shifter.
A
B
Tightening torque of cassette compartment
0.3432
±
0.0196N • m (3.5
±
0.2 kg • cm)
Select the desired cassette position by pressing
the claw position.
Reel select slider
Do not touch the slider drive shaft.
When selecting a cassette position, be careful not to
touch the slider drive shaft because it can be easily
bent or broken.
Cam motor
Gray
White
Apply current from
the inlets of the connector.
Loading : Apply positive polarity (+) of power supply to the gray wire
and negative polarity (–) of power supply to the white wire.
Unloading : Apply negative polarity (–) of power supply to the gray wire
and positive polarity (+) of power supply to the white wire.
[Rear side of chassis]
Unloading
Loading
Coupling gear
Rotate the coupling gear by hand to load or unload.