2-44
Lexmark™ E250d and E250dn
4512-220, -230
Media picks but stops halfway through the printer
Media never picks
Media occasionally mispicks or picks multiple sheets at once
FRU
Action
Input/duplex sensors
(under toner cartridge assembly)
Input sensor (manual)
Make sure the input sensors are working properly.
Check for a broken or stuck flag on the input sensors.
Make sure the cables are seated on the controller card at J23 (Tray 1 input)
and J20 (manual input).
Check for about +5 V dc on pin 6 at J23 (Input/duplex sensors) and pin 3 at
J20 (Input sensor).
• If correct, replace the input paper feed sensor.
• If these voltages are not correct, replace the controller card.
FRU
Action
Paper feed (pick tires) tray 1
Paper feed (pick tires) tray 2
Media drive ASM
Media feed clutch ASM
Manual feed clutch ASM
P/U and manual feed solenoid
ACM drive shaft
Open the left cover, and verify that the solenoids and clutches are functioning
when an attempt is made to feed the media.
Make sure the rubber tires on the ACM are installed and clean.
Replace the tires, ACM drive, clutch assemblies, solenoids, or drive shaft as
necessary.
FRU
Action
Tray 1
Tray 2 (option)
Check tray for media catch points.
If the sheet being fed stops momentarily, the ACM applies additional vertical force,
causing additional sheets to feed.
Do not mix media types in one tray.
Paper pick tires
(Tray 1 or tray 2)
Check the tires in the ACM assembly for signs of wear or damage.
Replace the tires as necessary.
ACM clutch complete bill
of material (CBM)
Manual feed clutch CBM
Media feed clutch ASM
(tray 1 only)
Manual feed clutch ASM
Open left cover, and observe the solenoid and clutch actions at the ACM and manual feed
shafts as a print job is attempted.
Replace the faulty part.
Controller card
P/U and manual feed
solenoid ASM.
Disconnect the solenoid cable at J21 on the controller card.
Measure the resistance across cable pins 1 and 2 and then pins 3 and 4.
• The resistance should be
180—250 ohms.
• If it is not, replace the solenoid assembly.
• If the resistance is 180—250 ohms, check the controller card. See
“Controller card
service check” on page 2-39
for more information.
Replace controller card as necessary.
Содержание 250d - E B/W Laser Printer
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Страница 109: ...Repair information 4 17 4512 220 230 5 Remove the coupling spring E 6 Remove the developer drive coupling F ...
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Страница 141: ...Locations and connections 5 1 4512 220 230 5 Locations and connections Locations Front view Rear view ...
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Страница 148: ...7 2 Service Manual 4512 220 230 Assembly 1 Covers ...
Страница 150: ...7 4 Service Manual 4512 220 230 Assembly 2 Electronics ...
Страница 152: ...7 6 Service Manual 4512 220 230 Assembly 3 Frame ...
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