Main Pcb - Kyocera Mita KM-1530 Service Manual

2AV/X

2-3-2 Main PCB

• 15 cpm copier
The main PCB (MPCB) consists mainly of the CPU IC16. It communicates with the printer controller and controls the
memory PCB, image processing system and engine drive system.
The CPU IC16 operates on an 8-bit bus. It uses the SRAM IC15 and IC17 for work memory and backup memory. In
accordance with the control program in FEEPROM IC11, the CPU IC16 communicates with the printer controller via the
serial communication function in the CPU. The CPU IC16 also controls the CCD PCB (CCDPCB), which is for image input
control, and the LSU, which is for image output control, via the image processing ASIC MIP IC4, and drives the operation
section and machine, conveys paper and detects abnormalities via XIO IC19 and IC25.
2-3
2-3-4
Main PCB
FEEPROM
IC11
CPU
IC16
SRAM
IC15,17
Control signal output
Detection signal input
Figure 2-3-3 Main PCB block diagram (15 cpm copier)
Clock signal
Analog image data
ADC S/H
IC2 IC
Print data
MIP
IC4
Printer data
Memory image data
Address bus
Data bus
Control signal
output
XIO
IC19,25
Detection signal input
* Optional.
Odd
CCD PCB
Even
LSU
BUF
Printer controller*
Memory PCB*
STDF*
Job separator*
Driver
Optional drawer*
Operation unit PCB
Drive unit
Scanner unit
Developing unit
Driver
Paper feed unit
Fixing unit
High-voltage
transformer PCB