Lexmark W820 Service Manual page 327

BD5 HVPS↔I/O PWB
The following table shows the signal names for this BD:
Signal Name
DBAC$CLK
DBAC$RMT
DBAC$ON
DBDC$RMT
BCRAC$CLK
BCRAC$ON
BCRDC$RMT
DTS$ON
BTR$SEL
BTR$ON
BTR$RMT
BTR##MON
AGND
+24VSQ
FB$ON
FB$SEL
HVPS Output
Terminal
BCR
DB
BTR
DTS
4025-XXX
Description
Controls AC to the Mag Roll
Varies the DB AC voltage
Varies the DB AC voltage
Varies the DB DC voltage
Controls AC to the BCR
Switches AC to the BCR
Varies the BCR DC voltage
Switches AC to the Detack Saw
Switches DC voltage polarity to the BTR
Switches the BTR
Controls voltage to the BTR
Monitors BTR voltage level
Ground
24VDC supplied through the interlock switch
Switches Fuser Bias. Used on only DADF/IIT install.
Switches Fuser Bias polarity
Output
BCR(AC)
BCR(DC)
DB(AC)
DB(DC)
TR(+)
TR(-)
DTS
Voltage or Current
2.2mA (Average)
-470 VDC
1.78kVp-p
-350 VDC
1.6kV, 3kV or 4.4kV (Reference)
-1.5 VDC
-2.13k VDC
Connector Locations
5-21