Konica Minolta bizhub 40p, Service Manual

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18. Wiring diagram Field Service V er. 1.0 Dec. 2007
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bizhub 40P
Appendix
Signal line name Description
/HEAT ON AC power-supply control signal for heater rod. Low: ON/High: OFF
M1 ON Control signal for main motor (M1).
M1 ALM Monitor signal for main motor (M1).
INTERLOCK AFT
Signal indicating that the rear cover is open. This signal goes High
when the front or rear cover is open.
INTERLOCK BEF
Signal indicating that the front cover is open. This signal goes High
when the front cover is open.
FAN ALARM
Cooling fan motor (FM2) monitor signal. If a trouble occurs, this signal
goes High.
EXIT /INB Excitation signal for exit motor. Phase /B.
EXIT /INA Excitation signal for exit motor. Phase /A.
EXIT INB Excitation signal for exit motor. Phase B.
EXIT INA Excitation signal for exit motor. Phase A.
EXIT CUR A Current-switching signal for exit motor.
EXIT CUR B Current-switching signal for exit motor.
A and B Current output to each winding of exit motor. Phases A and B.
/A and /B Current output to each winding of exit motor. Phases A and B.
/PRFD Prefeed signal. This is effective only when /RDY is Low.
/CCLK Clock signal. This is sent out simultaneously with /STA or /CMD.
/CMD
Command signal. When /CBSY is Low, it is sent out from the controller
in synchronism with /CCLK.
/CPRDY
Ready signal for the controller power supply. This signal goes Low
when the controller power supply is ON and, at the same time, initial-
ization of the CPU is completed. When a trouble occurs with the CPU,
the signal goes High.
/START Print start signal. This is effective only when /RDY is Low.
/CBSY
Command busy signal. This goes Low when /CMD is sent out (except
when /SBSY is Low or /PPRDY is High).
/STA
Status signal. Status is sent in synchronism with /CCLK when /SBSY
is Low.
/SBSY
Status busy signal. This signal is Low when the printer is sending /STA
(except when /CBSY is Low or /CPRDY is High).
/TOP
V ertical sync signal for image data. This is periodically sent out when
polygon motor is in operation.
/RDY
Ready signal. This signal is Low in a standby state where reception of
/START is awaited.
/PPRDY
Ready signal for the printer power supply. This goes Low when the
printer power supply is turned on and initialization of the CPU is com-
pleted. This signal goes High when the MCP detects an error.
/BD
Horizontal sync signal for image data. This is periodically sent out
when polygon motor is in operation.
/SLP Control signal for L V PS. This goes Low in power saving mode.
/ V DO1
Image data signal. This is sent out in synchronism with /TOP and /BD.
This signal goes High (White) for other than effective data.
/ V DO2