Lexmark 13P0195 - C 750dn Color Laser Printer Service Manual page 155

Service manual
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Step
Action and questions
7
Check the voltages on the bottom options cable
connector. The voltages are with the printer in standby
mode.
Note: All voltages are approximate values.
Connector pin Voltage
J5-1
J5-3
J5-5
J5-6
J5-8
Are the voltages correct?
8
Make sure the upper options cable in the duplex option
is installed correctly in the duplex frame.
Is the cable installed correctly?
9
Make sure the upper options cable in the duplex option
is connected correctly to J11 on the duplex options
board.
Is the cable connected correctly?
10
Check continuity of the upper duplex options cable.
Is there continuity?
Top margin on duplexed copy set incorrectly
Go to
"Quick Test" on page 3-23
+24 V dc
+5 V dc
+5 V dc
+5 V dc
+5 V dc
to adjust the top margin on the back of the duplex page.
Yes
No
Go to step 8
Replace the
bottom options
cable in the printer
Go to step 9
Correctly install the
cable. If the
connector is
damaged, replace
the cable
assembly.
Go to step 10
Install the cable
correctly
Replace the duplex
Install the cable
options board.
correctly.
Diagnostic information
5060-00x
2-121

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C750C750nC750dn

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