Lexmark C736 Service Manual

Diagnostic information2-65
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81. Replace the fuser. See “Fuser removal” 
on page 4-104. 
2. Bring the printer up in Diagnostics Menu 
(turn off the printer, press and hold   and 
. and turn on the printer). 
3. Select SENSOR TESTS, and press 
Select().
4. Select Dynamic Sensors, and press 
Select().
5. Select Fuser Exit, and press 
Select().
6. Open the front access door and top 
access cover.
7. Activate the fuser exit sensor.
8. Did the fuser exit sensor change from 
Open to...

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230.03, 230.05—Paper Jam error service check
Step Questions / actions Yes No
1Is the paper fan-folded? Replace the front door 
assembly. See “Front 
door assembly removal” 
on page 4-93. Go to step 2.
21. Turn the printer off
2. Remove the rear frame cover. See “Rear 
frame cover removal” on page 4-33. 
3. Check the MPF/duplex motor cable in 
connector JDX1 (A) for proper connection 
to the system board, cable pinch points, 
and any other damage to the...

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5Check the MPF/duplex gear assembly for 
damage.
Are the gears damaged?Replace the MPF/duplex 
gear assembly. See 
“Multipurpose feeder 
(MPF)/duplex gear and 
housing removal” on 
page 4-116. Go to step 6.
6Replace the MPF/duplex motor assembly. 
See “Multipurpose feeder (MPF)/duplex 
motor assembly removal” on page 4-118. 
Does the error clear?Problem resolved. Go to “Input sensor 
service check” on 
page 2-128.  Step Questions / actions Yes No 

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242.02—Paper Jam service check
Step Questions / actions Yes No
1Has paper been fed from an input option 
before?Go to step 4. Go to step 2.
21. Turn the printer off.
2. Remove the rear frame cover. See “Rear 
frame cover removal” on page 4-33.
3. Remove the right cover. See “Right 
cover removal” on page 4-37.
4. Check the cable in connector JOPT1 (A) 
for proper connection to the system board, 
cable pinch points, and any other damage 
to the cable or...

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242.03, 242.11—Paper Jam service check
Step Questions / actions Yes No
11. Bring the printer up in Diagnostics Menu 
(turn off the printer, press and hold   and 
. and turn on the printer). 
2. Select PRINT TESTS, and press 
Select().
3. Select a tray below tray 2, and press 
Select()
4. Select Single, and press Select().
Did the page feed correctly?Problem resolved. Go to step 2.
21. Turn the printer off.
2. Open the front access door, and turn the...

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242.05—Paper Jam service check
Step Questions / actions Yes No
1Has the paper been fed from an input option 
before?Go to step 5. Go to step 2.
21. Bring the printer up in Diagnostics Menu 
(turn off the printer, press and hold   
and . and turn on the printer).
2. Select PRINT TESTS, and press 
Select().
3. Select a tray below tray 2, and press 
Select().
4. Select Single.
Did the page feed correctly?Problem resolved. Go to step 3.
31. Turn the printer...

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242.10—Paper Jam service check
4Carefully lift the printer off the option, and lay 
the printer on its back.
Check the option connector for damage.
Is the connector damaged?Replace the option cable. 
See “Option cable 
removal” on page 4-125.Go to step 5.
5Is tray 2 a high-capacity input tray (2,000-
sheet feeder)?Go to step 7. Go to step 6.
6Replace the tray 2 option.
Does the error clear?Problem resolved. Replace the system board. 
See “System...

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242.17—Paper Jam service check
Step Questions / actions Yes No
1Has paper been fed from an input option 
before?Go to step 4. Go to step 2.
21. Turn the printer off
2. Remove the rear frame cover. See “Rear 
frame cover removal” on page 4-33.
3. Remove the right cover. See “Right 
cover removal” on page 4-37.
4. Check the cable in connector JOPT1 (A) 
for proper connection to the system board, 
cable pinch points, and any other damage 
to the cable or...

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242.26—Paper Jam service check
242.27—Paper Jam service check
Step Questions / actions Yes No
1Determine the input tray.
1. Bring the printer up in Diagnostics Menu 
((turn off the printer, press and hold   
and  . and turn on the printer). 
2. Select PRINT TESTS, and press 
Select().
3. Select the tray you indicated, and press 
Select().
4. Select Single, and press Select(). 
Did the page feed correctly?Problem resolved. Go to step 2.
2Is the tray...

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242.29—Paper Jam service check
243.02—Paper Jam service check
Step Questions / actions Yes No
11. Bring the printer up in Diagnostics Menu 
(turn off the printer, press and hold   and 
. and turn on the printer).
2. Select PRINT TESTS, and press 
Select().
3. Select Tray 5, and press Select(). 
4. Select Single, and press Select().
Did the page feed correctly?Problem resolved. Go to step 2.
2Is tray 2 a high-capacity input tray (2,000-
sheet feeder)?Replace...