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5
a) Drive circuit
It controls drive direction by output CAMFWD and CAMREV
from the microcomputer (IC701), and two values of drive
voltage by Hi-Z/L of CAMVOL.
VR2
VR21
b) Drive sequence
1 Driving continuously to the position of brake start.
2 Detecting of passing the position of brake start and starting short brake or reverse brake.
3 Starting of driving pulse to reach OK range. After confirmation of entering OK range, it is completed.
5
6
IC702
CAMSNS
94
CAMREF
95
MECHANISM
CONTROLLER
53
CAMVOL
6
7
Driving CRG chassis to the outer direction
(direction of EJECT position)
AM+>CAM-; (CAMFWD; H, CAMREV; L)
Driving CRG chassis to the inner direction
(direction of PLAY position)
CAM+<CAM-; (CAMFWD; L, CAMREV; H)
Drive voltage CAMVOL=H; 8V
CAMVOL=L; 7V
IC301
CAMFWD
90
7
3+3ch
DRIVER
CAMREV
89
6
9
SWDVDD2
CX-3168
7
8
CAM+
34
CAMGEAR
MOTOR
35
CAM-
8
A
B
C
D
E
F
21
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