Lexmark C752 Service Manual page 153

Printer does not recognize that the HCIT 2000-sheet option is installed.
Step Action and questions
1 Is the HCIT 2000-sheet option the only paper input
option that is not recognized?
2 Make sure that the printer and any option above the
HCIT 2000-sheet option are installed correctly.
Are the printer and any options installed correctly?
3 Check for correct installation of the lower options
autoconnect cable to system board connector J37.
Is the cable to J37 installed correctly?
4 Disconnect J37 from the system board and check the
voltages on connector J37 on the system board.
Note: All voltages are approximate values:
Connector pin Voltage
J37-1 +5 V dc
J37-2 Ground
J37-4 +5 V dc
J37-5 +24 V dc
J37-7 +5 V dc
J37-8 +5 V dc
Are the voltages correct?
5 Autoconnect cables - Check the autoconnect from the
printer or option above the HCIT 2000-sheet option.
Check for any signs of cuts, pinched wiring, or damage
to the contacts in the connector.
Are there any problems with the autoconnect cables?
HCIT autoconnect cable - Check the HCIT
6
autoconnect cable for correct installation at the HCIT
system board.
Is the cable installed correctly?
7 HCIT autoconnect cable continuity - Check the
continuity of the HCIT autoconnect cable(s).
Is there continuity?
Yes No
Go to step 5 Go to step 2
Go to step 3 Install the options
correctly and
recheck
performance
Go to step 4 Install the cable
correctly and
recheck
performance
Go to step 5 Replace the
system board
Repair or replace Go to step 6
as necessary
Go to step 7 Install the cable
correctly
Replace HCIT Replace the
system board HCIT
autoconnect
cable
Diagnostic information
5060-2XX
2-119