Service manual

3 TROUBLESHOOTING BY MESSAGE DISPLAYED
7-7
DUPLO DF-755 86V-M12D0-0
3 TROUBLESHOOTING BY MESSAGE DISPLAYED
NO PAPER
1) Is paper on the paper feed table?
No:
Stack paper on the paper feed table.
2) Does the paper reach the end of the paper feed tray?
No:
Push paper all the way in so that the paper reaches the end of the paper feed
table.
3) Is the paper sensor (PS1) dirty?
Yes:
Clean it.
Refer to "Chapter 1 > 6 USER MAINTENANCE."
4) Does the paper sensor (PS1) function properly?
Yes:
Replace the MC unit (PCB1).
No:
Check the connection of connectors between the paper sensor (PS1) and MC unit
(PCB1), and if it is found to be normal, replace the paper sensor (PS1).
PAPER ERR
1) Does the paper fed get jammed inside the machine?
Yes:
Remove the jammed paper and press the C (clear) button.
2) Has the mis-feed occurred?
Yes:
Refer to "2.1.1 Mis-feed."
3) Does the ejection gate sensor (PS2e, PS2r) function properly?
Yes:
Replace the MC unit (PCB1).
No:
Check the connection of connectors between the ejection gate sensor (PC2e, PC2r)
and MC unit (PCB1), and if it is found to be normal, replace the ejection gate
sensor (PC2e, PC2r).
COVER OPEN
1) Is the attaching position of the top cover switch (SW1) appropriate?
No:
Adjust the position.
Refer to "Chapter 5 > 3.1 Adjusting the interlock switch position."
2) Are there foreign particles on the detection part of the top cover switch (SW1) or is it broken
or deformed?
Yes:
Clean the part or replace the top cover switch (SW1).
No:
Check the connection of connectors between the top cover switch (SW1) and MC
unit (PCB1), and if it is found to be normal, replace the top cover switch (SW1).