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E. RESET CIRCUIT
This circuit detects ON/OFF of power to control start/stop of each circuit. The 5V voltage and WTOVF signal of the main PWB is detected by the reset
IC to generate the reset signal.
When the power voltage reaches the specified level, the circuit operations are started. Before the power voltage falls below the specified level, the cir-
cuit operations are stopped to prevent against malfunctions.
F. MAIN MOTOR DRIVE CIRCUIT
The main motor is driven by the MMD signal from ASIC. While the main motor is rotating, the MMD signal is driven to HIGH and passed through IC35
to the control circuit in the main motor to rotate the main motor. The /MMRDY signal is kept HIGH until the main motor speed reaches the specified
rpm, and passed to the CPU.
G. MIRROR MOTOR CIRCUIT
The mirror motor is a stepping motor, and it uses the IC29 and the constant current chopper control IC (SLA7027). For control, the CPU outputs the
drive signal to the IC29 to drive the mirror motor with 1-2 phase excitement.
CC01
0
CC12
1
IC5
ASIC
28
I
A
0
I
A
29
I
1
I
CC
C
1
96
IC1
CPU
9
CC
1
1
1
IC 1
0
2
15
AL-1611/AL-1622 ELECTRICAL SECTION
CC
IC
1
8
7
A
3
NJM 103M
IC3A
3
N
C
74 HC09
IC 1
1
18
IC
2
2200
IC25
9
SA
1 0 2
A
A
1
I A
A
5
8
I A
A
2
A
SA
1
12
S
1
18
I
1
11
I
1
15
10
S
1 0 2
S A 02
2
2200
13 – 14
2
IC
8
A
A
I
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