Lexmark W820 - Page 338

5-32 Service Manual
4025-XXX
BD12 I/O PWB↔MCU PWB (1 of 7)
The following table shows the signal names for this BD:
BD13 I/O PWB↔MCU PWB (2 of 7)
Signal Name Description
BTR##MON Monitors BTR current value
BTR$RMT Controls voltage to the BTR
BTR$ON Switches HVPS voltage to the BTR. 5V=Off. 0V=On
BTR$SEL Reverses BTR polarity. 5V=Positive. 0V=Negative
DTS$ON Switches HVPS voltage to the DTS. 24V=Off. 0V=On
BCRD$RMT Varies the BCR DC voltage
DBAC$ON Switches the HVPS AC voltage to the DB
DBAC$RMT Switches the HVPS AC voltage to the Magnet Roll
BCRAC$CLK Controls the HVPS AC voltage to the BCR
DBDC$RMT Varies the DB DC voltage
BCRAC$ON Switches the HVPS AC voltage to the BCR. 24V=Off. 0V=On
DBAC$CLK Controls the HVPS AC voltage to the Magnet Roll
FB$ON Switches Fuser Bias voltage. 24V=Off. 0V=On
FB$SEL Reverses Fuser Bias polarity. 24V=Positive. 0V=Negative
PWBA MCU(2/7)
PWBA I/O
P/J402
8
9
10
11
30
21
P/J403
BLK
P/J452
13
12
11
10
31
31
P/J453
TNR#EMP
FAN$FAIL
FAN$LOW
DMOT$REF
DMOT$ON
MMOT$ON
BLK
BLK
BLK
BLK
BLK