Engine Cpu Pin Assignment - Kyocera Ecosys FS-600 Service Manual

Engine CPU pin assignment

This is a 4 bit CPU, HD404369. The pin assignment is tabled below. The device in the
Related device ... column means those which the signal is forwarded to.
Note that only the pins with meaningful assignment are shown below and those for the
power line and ground are excluded.
ENGINE CPU PINS
Pin Signal
No name
1 LASER* R60
2 OUTPE R61
3 RDY* R62
4 VSREQ* R63
5 VSYNC* R70
6 CPRDY R71
7 PRINT* R72
8 SYSCLK SCK
9 CBSY* SI
10 SC SO
11 EGIR* R03
20 THERM R30
21 ILOCK* R31
22 PFPER* R32
23 PFSEN* R33
24 SBSY* R40
25 CINH* R41
26 THSBY R42
27 HEAT R43
28 HVON R50
29 MDCON R51
30 VHVDR R52
31 THVDR R53
34 PD* INT0
Port ID Direction
OUT Laser emission permission
OUT Video I/F control
OUT Video I/F control
OUT Video I/F control
IN Video I/F control
IN Video I/F control
IN Video I/F control
IN Video I/F control
IN Video I/F control
IN/OUT Video I/F control
OUT Video I/F control
IN Fuser temperature control
IN Interlock detection
IN PF-16 paper-empty detection
IN PF-16 presence detection
OUT Video I/F control
OUT Video I/F control
OUT Fuser temperature control
OUT Fuser heater control
OUT High-voltage control
OUT High-voltage control
OUT High-voltage control
OUT High-voltage control
IN Pin photo-sensor input
Description
4-24
Operation theory
Operation overview
Logic Related device
under control
Negative Scanner
Positive Controller
Negative Controller
Negative Controller
Negative Controller
Controller
Negative Controller
Controller
Negative Controller
Controller
Negative Controller
Negative Fuser unit
Negative
Negative PF-16
Negative PF-16
Negative Controller
Negative Controller
Fuser unit
Positive Fuser unit
Positive High-voltage unit
Positive High-voltage unit
Positive High-voltage unit
Positive High-voltage unit
Negative Scanner
FS-600/FS-680