Mechanism Descriptions - Pioneer YPM-MG2196ZF Service Manual

YPM-MG2196ZF
7.3.2 MECHANISM OPERATIONS
1 Disc Insertion
a)The Cam gear rotates to the elevation OK position
(See "How to remove the Tray Assy" on page 21). The
Stage Mech Assy moves upwards or downwards to
reach the height of the selected tray by using the ele-
vation mechanism.
b)The Cam gear rotates counterclockwise until the
LOAD switch is turned off. The Beak arms of the
Stage Mech ASSY driven by the Cam gear's move-
ment lift the selected tray.
c)The Stage Mech Assy with the tray lifted moves to the
top position using the elevation mechanism.
* Disc insertion/ejection is performed at the top position
(the 6th stage) irrespectively of tray position.
d)The Cam gear rotates counterclockwise to move the
Cam gear
Load arm
Fig. 21: Elevation OK position
66
Load switch
Beak arm
Stage mech Assy
Load arm
LOAD arms as shown in Fig.21.
e)The LOAD arms push the disc loaded on the tray and
open the tray hooks.
f)When a disc is inserted, the disc interrupts the infrared
LED light from the photo transistors, and the Rubber
roller starts rotating.
* The photo transistors are connected in serial. When
the light is interrupted from either photo-transistor,
the start of disc insertion will be detected.
g)The disc is drawn in. Then the disc pushes the inser-
tion completion switch via the arm.
h)The LOAD arms move forward to be released from
the disc. At the same time, the tray hooks close to
hold the disc on the tray.
Disc
Photo transistors
Insertion completion switch
Tray hook
Load arm
Fig. 22