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6-2 Engine Block Diagram
6-2
Block Diagram
CPU
(KS88C4616)
11.59158MHz
PROGRAM
MEMORY
(27C512)
74HC245
VIDEO
CONTROLLER
Interface
HVPS control
ADC
PWM
STEP MOTR
DRIVER
(TEA3718 for Main Motor
& 2916 for Sub-Motor)
SOLENOID DRIVE
• MAIN CLUTCH
• MP CLUTCH
FUSER CONTROL
ADC
PTL
FAN
2nd cassette
Feeder
(option)
Thermister value
SENSOR
A0 - A15
D0 - D7
CPU Clock (X-tal)
11.59158M Hz
74HC245
A0
A8
Feed_Sensor
Cover_Open
SCF_RDY
P_Empty
P_Exit
MP_Empty
Output_Full
Fuser_SW
--------------------
Size1
Size2
Size3
D_T_Sensor
DET_CRU
• THV READ
• THV / MHV / DEV PWM