3BN/3A4
1-3-3
(2-2) Duplex unit
• Jam in feedshift section (jam code 51)
Duplex paper conveying switch 1 (DUPPCSW1) does not turn on within 1640 ms of the start of reverse rotation of the
paper conveying motor (PCM).
1640 ms
PCM
DUPPCSW1
Off
On
Off
On
Rev. rotation
Timing chart 1-3-5
• Jam in duplex paper conveying section 1 (jam code 60)
Duplex paper conveying switch 2 (DUPPCSW2) does not turn on within 3360 ms of duplex paper conveying switch 1
(DUPPCSW1) turning on.
3360 ms
DUPPCSW1
DUPPCSW2
Off
On
Off
On
Timing chart 1-3-6
• Jam in duplex paper conveying section 2 (jam code 61)
Duplex paper conveying switch 2 (DUPPCSW2) does not turn off within 3360 ms of duplex paper conveying switch 1
(DUPPCSW1) turning off.
3360 ms
DUPPCSW1
DUPPCSW2
Off
On
Off
On
Timing chart 1-3-7
The registration switch (RSW) of the copier does not turn on within 3300 ms of duplex paper conveying switch 2
(DUPPCSW2) turning on.
3300 ms
DUPPCSW2
RSW (copier)
Off
On
Off
On
Timing chart 1-3-8
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