Lexmark C736 Service Manual

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244.29—Paper Jam service check
245.02—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 4, and press Select().
4. Select Single, and press Select().
Did the page feed correctly?Problem resolved. Go to step 2.
2Is tray 4 a high-capacity input tray (2,000-
sheet...

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245.03, 245.11—Paper Jam service check
3Carefully lift the printer off the options, 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 4.
4Replace the complete tray 5 option.
Does the error clear?Problem resolved. Replace the system board. 
See “System board 
removal” on page 4-153.
Step Questions / actions Yes No
11. ring the...

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245.05—Paper Jam service check
Step Questions / actions Yes No
1Has 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 Tray 5, and press Select().
4. Select Single, and press Select().
Did the page feed correctly?Replace the option cable. 
See “Option cable...

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245.10—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 4 a high-capacity input option (2,000-
sheet feeder)?Go to step 7. Got to step 6.
6Replace the complete tray 5 option.
Does the error clear?Problem resolved. Replace the system board. 
See...

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245.17—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 connector JOPT1 for proper 
connection to the system board, the cable 
for pinch points, and the cable or 
connector for any...

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245.29—Paper Jam service check
900.00–900.99 (except 900.05)—System software error service check
There are different types of 900.xx errors that can occur. There may be a communication problem (Bad cable, 
network connection, and so on) software issue, or a hardware problem with the controller board, or ISP (Internal 
solutions port). The communication and software aspects should be checked first. Determine if the problem is 
constant or intermittent. Use...

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6Print the following:
•Error log
• Menu settings page
• Network settings page
Does the 900.xx error reoccur while these pages 
were printing?Go to step 31. Go to step 7.
7Re-attach the communications cable. Restart the 
printer to operating mode. Send the printer a print job. 
Does the 900.xx error reoccur?
Note: Before performing this step, write down this 
information about the file being sent to the printer:
• Application used
• Operating system...

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19Replace the modem. Restart the device. 
Does the 900.xx error reoccur?Go to step 31. Problem 
resolved.
20Run a fax job. 
Does the 900.xx error reoccur?Go to step 31. Go to step 21.
21Are there any ISP (internal solutions port) options 
installed?Go to step 22. Problem 
resolved.
22Reinstall the first ISP option. Restart the device. 
Does the 900.xx error reoccur?Go to step 24. Go to step 23.
23Run a job to test the option. 
Does the 900.xx error...

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900.05—Transfer module error service check
Step Questions / actions Yes No
11. Turn the printer off.
2. Remove the rear frame cover. See “Rear 
frame cover removal” on page 4-33.
3. Check the transport cable in connector 
JTPS1 (A) for proper connection to the 
system board. 
4. Open the front access door and check the 
transport cable for pinch points and any 
other damage to the cable or connector. 
Is the cable damaged?Replace the transport...

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902.59—Engine software error, NVRAM MGR problem service check
920.03, 920.25—Transfer Module Missing error service check
Step Questions / actions Yes No
1Has the printhead been recently replaced? Replace with a new system 
board that has never been 
used before. See “System 
board removal” on 
page 4-153Go to step 2.
2Has the transfer module been recently 
replaced?Replace with a new 
transfer module. See 
“Transfer module 
removal” on page 4-168. Go to...