Lexmark CS720 - Page 186

Action Yes No
Step 3
Reconnect the cable.
Does the problem remain?
Go to step 4. The problem is
solved.
Step 4
Check the cable for damage, and replace if necessary.
Does the problem remain?
Go to step 5. The problem is
solved.
Step 5
Replace the HVPS. See
“HVPS removal” on page 319.
Does the problem remain?
Go to step 6. The problem is
solved.
Step 6
Replace the controller board. See
“Controller board removal” on
page 357.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
Motor (CM developer) service check
Action Yes No
Step 1
Reset the printer.
Does the problem remain?
Go to step 2. The problem is
solved.
Step 2
a Remove the imaging kit, and then remove the transfer module.
See
“Transfer module removal” on page 334.
b Enter the Diagnostics menu, and then navigate to:
Printer diagnostics & adjustments > Motor tests > CM
developer
c Tou ch Start.
Does the motor run?
Go to step 3. Go to step 6.
Step 3
Manually turn the drive gears.
Do the black developer and transfer module drive gears freely
turn?
Go to step 5. Go to step 4.
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Diagnostic information
186