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A
Measure for +24VDC on the Main LVPS at the following locations:
•
Between
P/J502
pins 1 and 7 (+), and GND (-)
(BSD 1.4 - DC Power Generation (1 of
•
Between
P/J503
pins 5, 6, and 8 (+), and GND (-)
(2 of
2))
(BSD 1.5 - DC Power Generation (2 of
+24VDC is measured at all locations.
Y
N
Replace the Main LVPS
(PL
18.2).
Check the wire to the applicable component for an open circuit or poor contact by referring to
Chapter 7 Wiring Data.
Status Indicator RAPs
+24VDC Power RAP, Machine Not Ready RAP
(BSD 1.5 - DC Power Generation (2 of
2)).
(BSD 1.9 - Power Interlock Switching
2).
BUS Updated 12/2011
Machine Not Ready RAP
2))
"Machine not ready" is defined as any condition where the machine is not capable of perform-
ing its basic tasks (Copy or Print). This does not include failure of ancillary devices (Finishers,
IIT, Fax, Paper Trays). "Not ready" ranges from a machine that is totally inert, without any indi-
cation of power, to a machine that appears ready but does not respond to either Control Panel
commands or Network input.
Procedure
The first step is to categorize the problem. Decide which of the following condition best
describes the problem:
•
Dead Machine
•
Does not complete Boot-up
•
Boots up; does not respond to Control Panel
•
Boots up; does not print (or other Network problems).
Dead Machine
If the machine shows no sign of power (fans or motors running, backlight on UI display, LED's
on Control panel), check for AC line voltage at the Finisher Outlet.
1.
If AC Voltage is not present, go to the
2.
If AC Voltage is present, open the ESS Cover
•
If STBY +5VDC LED, Green CR231
RAP.
•
If +24VDC LED, Orange CR201
If there is some indication of power from the machine, perform
Tests.
If the UI remains blank during the test, the problem is likely in the Control Panel Assembly, the
ESS, or in the connection between them:
1.
Refer to
BSD 2.1 - User Interface (UI)
2.
Check the UI Cable between
damage or loose connections.
3.
Check the connections on the wire harness and PWB's within the Control Panel Assem-
bly.
4.
If the check is good, replace the Control Panel Assembly
ues, replace the ESS PWB
(PL
Does not complete Boot-up
Failure to complete the boot routine can be caused by corrupt software or mismatched soft-
ware versions.
GP 6
details how to check s/w versions;
Boot failures can also be caused by hardware failures in the ESS, or communication failures
between the ESS and the rest of the machine. The ESS PWB has a group of diagnostic LED's
that change state as the boot-up progresses. See
Some boot-up failures may be caused by structural flaws in a command sent to the machine. In
these cases, it is sometimes possible to bypass or delete the offending code during the startup
process. Refer to
GP
14, Special Boot Modes. Take note of the Cautions in the procedure.
07/2011
2-1018
AC Power
RAP.
PL
35.1.
(Figure
1), is not lit, go to
STBY +5VDC Power
(Figure
1), is not lit, go to the
+24VDC Power
GP
20, Long Boot Diagnostic
and
BSD 3.4 - ESS-UI
Communication.
P/J352
on the ESS PWB and
P/J1
on the UI I/F PWB for
(PL
1.7). If the problem contin-
35.2)
GP 16
explains how to reload s/w.
GP
19, Boot Sequence, for details
WorkCentre 5335 Family Service Documentation
RAP.
Initial Issue
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