Duplo DP-S Series, Service Manual

Page: 186 / 298

185
z
Troubleshooting Guide
chap.6
(22) "NO MASTER" is displayed
(23) "NO INK" is displayed
Cause/Detective section Procedures Result Countermeasure Items to be checked
End mark sensor PCB unit
2
Does replacing the end mark sensor
PCB unit solve the problem?
Is trouble cleared by adjusting the end
mark sensor PCB unit by HELP-008?
YES
YES Finish.
Main PCB unit
NO
Check bundled wire and connectors
and replace main PCB unit.
1
Adjustment for the end
mark sensor PCB unit.
Finish.
HELP-008
\
see page 218
Cause/Detective section Procedures Result Countermeasure Items to be checked
24V power supply
7
Measure the voltage between CN2-1
and CN2-5 of the 24V power with the
tester. Is the v24V?
NO
NO
NO
NO
NO
Replace the 24V power supply.
Ink pump motor
8
Does voltage between drive PCB unit
CN6-24 and -25 show 24V?
YES Replace the ink pump motor.
Ink pump
Replace the ink pump.
Is trouble cleared by cleaning inside of
ink pump? Foreign material in ink pump
6
YES Finish.
Does ink pump operate?
5
Proceed to procedure
7
.
Is enough ink left in drum?
(Has ink reached detection needle for
the ink detection PCB unit?)
Ink detection PCB unit
4
YES Replace the Ink detection PCB unit.
Is LED on the ink detection PCB unit lit? Main PCB unit
3
YES
Check bundled wire and connectors and
replace main PCB unit.
Is ink pack set properly?
Setting method of ink pack. 2
Set ink pack properly and teach user
how to set one.
Is enough ink left in ink pack? Ink
1 Replace the ink pack.
Drive PCB Unit
9
Does replacing the drive PCB unit solve
the problem?
YES Finish.
Main PCB unit NO
Check bundled wire and connectors
and replace main PCB unit.