April 2017
8-7
Xerox® VersaLink® B7025/B7030/B7035 Multifunction Printer
Product Technical Overview
Launch Issue
Front Cover and Left Cover Interlocks
The front cover interlock switch is wired in series with the L/H cover interlock switch. These
switches are supplied with +5VDC power from the LVPS. The drive PWB monitors their status.
When the front cover interlock switch opens, fault code 077-300 front cover open sets and the
drive PWB de-energizes the interlock relay located on the LVPS. Simultaneously, the fault
code and a message to close the front cover display on the UI. With the interlock relay de-
energized, the supply of +24VDC power is removed from the drive PWB and the devices it
supplies and/or controls (tray module PWB, motors, clutches, solenoids, fans and xerograph
-
ics). Refer to Figure 4.
Figure 4 Front cover and left cover interlocks
The left cover interlock switch is wired in series with the front cover interlock switch. These
switches are supplied with +5VDC power from the LVPS. The drive PWB monitors their status.
When the L/H cover interlock switch opens, fault code 077-301 left hand cover open sets and
the drive PWB de-energizes the interlock relay located on the LVPS. Simultaneously, the fault
code and a message to close the front cover display on the UI. With the interlock relay de-
energized, the supply of +24VDC power is removed from the drive PWB and the devices it
supplies and/or controls (tray module PWB, motors, clutches, solenoids, fans, xerographics).
Refer to BSD 1.8 Power Interlock Switching (1 of 3) and Figure 4.
Left Upper Cover Interlock
The left upper cover switch, Figure 5, is supplied with +5VDC power from the drive PWB,
which also monitors its status.
When the left upper cover switch opens, fault 077-308 left hand high cover open is declared
and a message to close the cover displays on the UI. The machine inhibits printing until the
user closes the cover, canceling the condition.
Figure 5 Interlocks on left covers
Left cover interlock
Front cover
interlock
Left upper cover
interlock recess
Left cover interlock
recess