Lexmark W820 Service Manual page 338

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