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Xerox DocuPrint N17 Service Manual
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Wiring Data
12. MCU
↔
CONTROL PANEL
Signal Name
Description
RD DATA
Data line for reading the information on the keys from the Control
Panel (serial signal)
/WR DATA
Data line for writing the display data for the LCD and LEDs on the
Control Panel (serial signal)
CLK
Synchronization signal for the data transmission
/LCD EN
Enable signal for selecting the LCD (LOW level when selecting the
LCD, and HIGH level when not selecting the LCD)
/SW EN
Enable signal for selecting the Switches (LOW level when selecting
the Switches, and HIGH level when not selecting the Switches)
/LED EN
ENABLE signal for selecting the LEDs (LOW level when selecting the
LEDs, and HIGH level when not selecting the LEDs)
CH OL
Signal for selecting a register in the LCD controller (LOW level when
selecting the Data Register and HIGH level when selecting the
Instruction Register)
ESS RESET
Reset signal for the Control Panel (normally HIGH level, and LOW
level when resetting the Control Panel)
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
P/J32
P/J33
/RD DATA
CLK
/SM EN
CH DL
5V
/WR DATA
/LCD EN
/LED EN
/ESS REST
SG
MCU
CONTROL PANEL
SAS617XA
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