Terminal
oscillation frequency
X in(#30)
X out(#31)
4MHz
4MHz
8-1. Power supply part
About AC 9V, pressed at 2nd side of LVT(LOW Volt Transformer), is suspended between CN10
~ and DC 5V is made through constant-voltage IC (KA7805) rectified by Rectifier Diode.
And, about AC 17V is suspended between CN10 ~ and DC 12V is made through
constant-voltage IC(KA7812).
8. Circuit operation theory
8-2. Power generator circuit part
This is a power generator circuit part to generate synchronous CLOCK for information transfer of
MICOM internal degauss and calculate time. On change of spec. of RESONATOR, normal
operation cannot be performed from the result of change of TIMMING system in MICOM.
8-3. RESET circuit part
RESET circuit is to operate overall PROGRAM in the primary state by initializing several parts including
RAM in the internal of MICOM when power is supplied to MICOM as a result of power input or instant
suspension of electric supply. When power is supplied, voltage at RESET Terminal becomes scores of
ÒLowÓstate, when compared to the voltage of Vcc (DC 5V) of MICOM. On the general operation
state,ÓHighÓ (Vcc voltage) state is maintained.
Voltage
Circuit used
Vcc
Power supply for MICOM
(DC 5V)
and peripheral circuit
V12
Power supply to operate RELAY,
(DC 12V)
EJECT MOTOR, DISPLAY
Terminal
oscillation frequency
Vcc
RESET
DC 5V
DC 5V
GRY
RED
BLK
BLK
BLU
BLU
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