20 June 2005 SERVICE CALL CONDITIONS
4-15
Trouble-
shooting
740 D Booklet finisher error 1: Not Saddle Stitch
741 D Booklet finisher error 2: Saddle Stitch
• See description below
SC740 and SC741 are issued when an error occurs in the 1000-Sheet Saddle-
Stitch Finisher B546. Specific details about these SC codes are not displayed on
the operation panel display. However, you can determine the specific cause of an
error by observing the number of flashes and the lengths of the intervals between
flashes.
To Read SC740/SC741 from LED 2
1. Remove the upper rear cover.
2. Look at LED 2 and observe the number of flashes and the lengths of the
intervals between flashes.
What You See What It Means
500 ms ON, 500 ms OFF Finisher operating normally
2 s ON, 1 s OFF START
Example: 1-4-2
The numbers refer to the flashes and intervals in the
illustration above.
1 300ms ON, 500ms OFF
4 300ms ON, 200ms OFF (Repeats 3 times), 300ms ON, 500ms OFF (break)
2 300 ms ON, 200ms OFF, 300 ms ON, 500ms OFF (break)
Returns to START and repeats (2 s ON, 1 s OFF, then 1-4-2)
2sec 1sec
ON: 300ms
OFF: 200ms
START
1 4 2
Repeat
Break: 500ms Break: 500ms Break: 500ms
LED ON
LED OFF
B195T901.WMF
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