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5
1.6 MECHANISM CONTROL
- Overview
The combination of load/eject operation, camgear motor
(operation mode) operation, elevation operation and
clamp operation enables the operation as changer
mechanism module.
1) Loading system
Disc position is detected with 3 switches attached to mechanism unit, photo,
and LED, and load/eject is performed by driving an E/L motor. *E/L is
abbreviation of Elevation/Loading. (G3 mechanism shares a motor, unlike G2
mechanism.)
1.1) Detect system
The 3 switches, photo and LED operate load start/load end, disc form detection
and watching disc eject.
1.2) Drive system
Controlling an E/L motor by the control unit enables the following function:
Loading of disc
Ejecting of disc
a) Drive system
It controls drive direction by output E/LFWD, E/LREV from
the microcomputer (IC701), and 3 values of drive voltage
by Hi-Z/L of ELVVOL1,ELVVOL2.
LOADPHT
LOADSWR
LOADSWL
IN/SW
5
6
At the time of loading E/L+<E/L- ; (E/LFWD; L, E/LREV; H)
At the time of ejecting E/L+>E/L- ; (E/LFWD; H, E/LREV; L)
Drive voltage (E/LVOL1=Hi-Z, E/LVOL2=Hi-Z) ; 8V
Drive voltage (E/LVOL1=L, E/LVOL2=Hi-Z) ; 7V
Drive voltage (E/LVOL1=Hi-Z, E/LVOL2=L) ; 4.4V
IC701
91
E/LFWD
32
58
MECHANISM
CONTROLLER
E/LREV
57
31
43
7
30
E/LVOL1
E/LVOL2
SWDVDD2
CX-3168
6
7
IC302
E/L+
3
4
E/L
3+3ch
DRIVER
MOTOR
5
2
E/L-
8
7
8
A
B
C
D
E
F
17
8
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