Sharp MX-C507P - Page 290

5028
Dead machine service check
Diagnostics and troubleshooting
256
Action
Yes
No
Step 1
Check the AC line for proper voltage.
Does the AC line have proper voltage?
Go to step 3.
Go to step 2.
Step 2
Use an electrical outlet that has proper voltage.
Does the problem remain?
Go to step 3.
The problem is
solved.
Step 3
Check the power cord for damage, and replace if necessary.
Does the problem remain?
Go to step 4.
The problem is
solved.
Step 4
Check the cable on the LVPS and on the JLVPS connector on the
controller board for proper connection.
Is the cable properly connected at both ends?
Go to step 6.
Go to step 5.
Step 5
Reconnect the cable.
Does the problem remain?
Go to step 6.
The problem is
solved.
Step 6
Check the cable for continuity.
Does the cable have continuity?
Go to step 8.
Go to step 7.
Step 7
Replace the cable.
Does the problem remain?
Go to step 8.
The problem is
solved.
Step 8
Measure the values of pin 4, 6, 8, and 11 to 26 of the JLVPS
connector on the controller board. See “Controller board
connectors” on page 430 .
Are the values approximately correct?
Go to step 10.
Go to step 9.
Step 9
Replace the LVPS. See “LVPS removal” on page 342 .
Does the problem remain?
Go to step 10.
The problem is
solved.