Operation Unit Left Pcb - Kyocera Mita KM-4230 Service Manual

2-3-8 Operation unit main PCB, operation unit right PCB, and

operation unit left PCB

Main
PCB
ODSW
Touch
Touch
panel
panel
circuit
LCD
DC-DC
–23 V DC
converter
IC8
Figure 2-3-8 Operation unit main PCB, operation unit right PCB, and operation
unit left PCB block diagram
OMPCB
Address bus
Data bus
EPROM
IC12
CPU
IC19
EPROM
IC16
SRAM
IC9
Reset
circuit
Address
decode
circuit unit
Chip select
LCD
controller
IC11
Address bus
Data bus
Scan signal
Return signal
Scan signal
Return signal
SRAM
IC20
2A3/4
CFL
OLPCB
CFL
lighting
circuit
unit
Key
switch/LED
display
ORPCB
Key
switch/LED
display
2-3-11