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Problem
(6)
The CIS does not
turn on.
(7)
The CIS does not
turn off.
(8)
A message indication
cover open is dis-
played when the DP
is closed correctly.
(9)
The size of original is
not displayed cor-
rectly.
1-5-70
Causes
Poor contact in the CIS con-
nector terminals.
Defective DP inverter PWB. Run maintenance item U061 and check if the CIS turns on when
Defective DP main PWB.
Defective DP inverter PWB. Check if the CIS turns off when the connector on the DP inverter
Defective DP main PWB.
Poor contact in DP safety
switch 1 connector termi-
nals.
Defective DP safety switch
1.
Poor contact in DP safety
switch 2 connector termi-
nals.
Defective DP safety switch
2.
Poor contact in the original
length size switch connec-
tor terminals.
Defective original length
size switch.
Poor contact in the original
width size switch connector
terminals.
Defective original width size
switch.
Check procedures/corrective measures
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
the connector on the DP inverter PWB goes low. If not, replace the
DP inverter PWB.
Run maintenance item U061 and check if the CIS turns on when
YC12-2 on the DP main PWB goes low. If not, replace the DP
main PWB.
PWB goes high. If not, replace the DP inverter PWB.
If YC12-2 on the DP main PWB is always low, replace the DP
main PWB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check for continuity across the contacts of the switch. If none
when the switch is on, replace DP safety switch 1.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check for continuity across the contacts of the switch. If none
when the switch is on, replace DP safety switch 2.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U244 and turn the original length size
switch on and off manually. Replace the original length size switch
if indication of the corresponding switch on the touch panel is not
displayed in reverse.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if the level of YC8-5 on the DP main PWB change alter-
nately when the original width guides are moved. If not, replace
the original width size switch.
Service Manual
Y104350-7
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