Alignment & Adjustment

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7
Alignment & Adjustments
7. Alignment and Adjustments
This chapter describes some of the main service procedures including:
Using the EDC mode; Clearing paper jam and test patterns.
Much of this chapter is also included in the user's guide.
7.1. Paper path and Paper jam
7.1.1 Paper path
Exit Sensor
EXIT Ass’y
Duplex Path
Fuser Unit
ITB
DEV. - Black
DEV. - Yellow
DUPLEX
Transfer Roller
OPC
DEV. - Magenta
Feed Sensor
DEV. - Cyan
MPF Path
MPT Path
Pick-up
Roller
Feeder
FCT
CASSETTE
Paper Empty Sensor(MPT)
FCT Path
SCT
SCF
SCF Path
SCT Path
Paper Empty Sensor(SCT)
Paper Empty Sensor(FCT)
Paper Pick-Up Roller
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Samsung Electronics
EXIT Unit
Fuser Unit
DEV. - Black
DEV. - Yellow
DUPLEX
DEV. - Magenta
DEV. - Cyan
Feeder
Alignment & Adjustments
7.1.2 Jams
1) Jam0 (Jam in feed area)
* After a page was picked up, it was not fed.
* Paper does not reach the feed sensor in a
certain time.
* Feed sensor is faulty and does not detect
paper.
- FCF pickup error: When a paper is not
picked up in the 1st cassette.
- SCF pickup error: When a paper is not
picked up in the 2nd cassette.
Feed Sensor
Pick-up
Roller
Paper Empty Sensor
2) Jam1 (Jam inside printer)
* After the leading edge of the paper has
reached the feed sensor, the feed sensor
doesn't turn off (fails to detect the trailing edge
of the paper) in a certain time
* After the leading edge of the paper has
passed the feed sensor, it doesn't reach the
exit sensor in a certain time.
* Exit senor is faulty and does not detect paper.
Exit Sensor
Feed Sensor
3) Jam2 (Jam in exit area)
* After the leading edge of the paper has
passed, the trailing edge of the paper has not
passed the exit sensor within a certain time
* The paper drive motor has been driving for
longer than the time needed for the longest
paper size and the exit sensor is not off.
Exit Sensor
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 Alignment & Adjustments
4) Jam duplex (Jam in duplex area)
* Jam duplex occurs when printing the reverse
side of the paper during duplex printing. After
printing the front side the duplex solenoid must
operate in order to feed the paper back into the
duplex path. If the solenoid fails paper may be
stuck in the exit roller and is not fully elected
into the exit tray
Exit Sensor
Feed Sensor
* If the duplex solenoid operates paper is fed
back into the machine. If the leading edge of
the paper does not reach the feed sensor in a
certain time then Jam Duplex occurs.
- This can be cause by paper being jammed
in the duplex path area.
5) Jam MPF
* Paper could not be picked up from the MPF tray.
* After pickup, a paper has been fed, but it
doesn't reach the feed sensor in a certain time.
* Feed sensor is faulty and does not detect paper.
Feed Sensor
CASSETTE
SCF
SCF Path
MP Empty Sensor
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Alignment & Adjustments
7.2 Jam Removal
When a jam occurs while printing a jam message is displayed on the control panel.
* Jam0 In Tray 1:
Paper jam in the main cassette.
* Jam0 In MP Tray:
Paper jam in the MP tray
* Jam0 Tray2:
Paper jam in the SCT (Second cassette tray)
* Jam Inside Printer:
Jam 1, Paper is jammed inside the printer.
* Jam In Exit Area:
Jam2, Paper is jammed in the exit area when ejecting paper.
* Jam In Duplex Path:
While duplex printing, paper is jammed in the duplex unit.
CAUTION:
When removing jammed paper, always pull it firmly and evenly without any sudden jerks. If
at all possible, remove the paper as a single sheet. If the paper tears ensures ALL paper
fragments are removed. Any fragments left inside the machine will cause it to jam again.
7.2.1 Factors that cause paper to jam
- Too much paper is loaded in the cassette.
- Paper in not loaded correctly in the cassette.
- Duplex cover opened while printing.
- Cassette removed while printing.
- Incorrect thickness of paper used.
- Incorrect size of paper used.
- Cassette paper guides not correctly set (loose or too tight).
- Foreign object or other contamination of internal paper path and paper guide ribs.
- Badly damaged or folded leading or trailing edges of the paper.
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Alignment & Adjustments
7.2.2 Tips for Avoiding Paper Jams
By selecting the correct paper types, most paper jams can be avoided. If a paper jam occurs, follow the
steps outlined below:
• Ensure that the adjustable guides are positioned correctly.
• Do not overload the tray. Ensure that the paper is below the paper capacity mark on the right
inside the tray.
7.2.3 Jam 0 In Tray 1
If paper is jammed in the paper feed area,'Jam0 In Tray1 ' appears on the display.
1. Using the handle open the right cover.
4. Pull the tray open. After you pull it all the way
out lift up the front part of the tray slightly to
release the tray from the machine.
2. Carefully remove the misfed paper in the
direction as shown.
5. Remove the jammed paper by gently pulling it
straight out.
3. Close the right cover .The printer resumes printing.
If there is any resistance, and the paper
does not move immediately when you pull,
stop pulling and go to step 4.
6. To replace the tray lower the rear edge, align it
to the slot and slide it into the printer.
7. Close the right cover .The printer resumes print-
ing.
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