OTHER FAULTS RAPs
2/99
OF2
2-32
DocuPrint C55/C55mp/[NC60]
OF2
CONTROL PANEL RAP
This RAP is used when the Control Panel
Message Display, LEDs, or Buttons do not
work.
INITIAL ACTION
Switch the power off wait 10 seconds and
switch the power on and recheck for the fault.
Enter IOT normal diagnostics (
Menu [3]
,
Enter [7]
+ Power On) and check the
operation of the Control Panel. If the Control
Panel works OK in diagnostics, refer to BSD 6
and check the PCU to ESS connectors
CN104. If the connections are OK, replace the
ESS PWB.
PROCEDURE
Classify the problem into one of the following
categories, then go to the appropriate
subsection of the RAP.
OF2.1 The Message Display top row consists
of
n
‘s. The bottom row is blank.
OF2.2 The Message Display is blank (no *
during IOT Boot).
OF2.3 The message display is flickering off
and on, or displaying random
characters.
OF2.4 Message display works OK, LEDs do
not work correctly.
OF2.5 Message display works OK, Switches
do not work correctly.
OF2.6 * Circles Continuously.
OF2.7 Rebooting message never clears.
OF2.1 The Message Display top row
consists of
n
‘s. The bottom row is
blank.
PROCEDURE
Switch the power off wait 10 seconds and
switch the power on, while listening to the IOT.
The IOT runs (boots up) when the printer is
switched on.
Y
N
Refer to BSD 6 and check the RES signal
(CN104-8) for a short to ground.
Refer to BSD 2.1 and check the D3 signal
(CN103-25) for a short to ground.
It the wiring is OK, replace the PCU PWB.
If the problem still exists, replace the
Control Panel PWB.
Refer to BSD 2.1 and check the following
signals:
•
CN103-22 Read/Write for an open.
•
CN103-23 Register Select for an open or a
short to ground.
•
CN103-24 Display Enable for an open or a
short to ground.
•
CN103-25 Data 3 for an open.
•
CN103-26 Data 2 for an open.
•
Refer to BSD 10.2 and check CN103-18
Strobe 2 for a short to ground.
•
Refer to BSD 10.4 and check CN103-19
Strobe 1 for a short to ground.
If all appear OK, replace the Control Panel PWB.
If the problem still exists, replace the PCU PWB.
OF2.2 The Message Display is blank (no *
during IOT Boot).
PROCEDURE
Switch the power off wait 10 seconds and
switch the power on, while listening to the IOT.
The IOT runs (boots up) when the printer is
switched on.
Y
N
Set up the meter to m5 VDC.
Measure between CN310-10 (+) and
CN310-11 (
−
).
The meter ind5 VDC
.
Y
N
Go to OF1.1 +5 VDC RAP.
Refer to BSD 2.1 and check the +5 VDC
CN310-11 and DC COM CN310-10 from
the Connector PWB to the Control Panel.
If OK, replace the Control Panel PWB.
Refer to BSD 2.1 and check the following
signals:
•
CN103-22 Read/Write for a short to
ground.
•
CN103-26 Data 2 for a short to ground.
•
CN103-27 Data 1 for an open.
•
CN103-28 Data 0 for an open.
Refer to BSD 6 and check the following
signals:
•
CN104-1 STS (Status) for an open or a
short to ground.
•
CN104-5 SRDY (Status Ready) for an
open.
If all appear OK, replace the Control Panel PWB.
If the problem still exists, replace the PCU PWB.
Summary of Contents for DocuPrint C55
Page 14: ...SERVICE CALL PROCEDURES 2 99 NOTES 1 6 DocuPrint C55 C55mp NC60 Notes ...
Page 56: ...OTHER FAULTS RAPs 2 99 NOTES 2 42 DocuPrint C55 C55mp NC60 NOTES ...
Page 76: ...IMAGE QUALITY SPECIFICATIONS 2 99 NOTES 3 20 DocuPrint C55 C55mp NC60 NOTES ...
Page 130: ...REPAIRS ADJUSTMENTS 2 99 NOTES 4 42 DocuPrint C55 C55mp NC60 NOTES ...
Page 216: ...GENERAL PROCEDURES 2 99 NOTES 6 18 DocuPrint C55 C55mp NC60 Notes ...
Page 252: ...GENERAL PROCEDURES 2 99 NOTES 6 54 DocuPrint C55 C55mp NC60 NOTES ...
Page 272: ...GENERAL PROCEDURES 2 99 NOTES 6 74 DocuPrint C55 C55mp NOTES ...
Page 274: ...GENERAL PROCEDURES 2 99 NOTES 6 76 DocuPrint NC60 NOTES ...