Troubleshooting; The Plotter Is Turned On But Doesn't Operate - GRAPHTEC FC7000-75 Service Manual

9. TROUBLESHOOTING

9.1 The Plotter is Turned On But Doesn't Operate

Symptom
The control panel's LED
lamp does not light or
the LCD does not display
anything.
FC7000-UM-251-9370
Verification item
(1) Is the plotter being supplied with
power?
(2) Is the FFC312202A flexible
cable securely connected to
the main board and the control
panel?
(3) Is the FFC312202A flexible
cable broken?
(4) Is the AC line electrical output
correct?
(5) Does the power supply unit
have a 40 V output?
No .....Check that the power cord is
securely connected to the plotter's
AC line inlet.
Yes ....Verify item (2).
No .....Connect the flexible cable
securely.
Yes ....Verify item (3).
No .....Verify item (4).
Yes ....Replace the FFC312202A flexible
cable.
No .....Change the AC line.
Yes ....Verify item (5).
No .....Replace the power supply unit.
Yes ....Replace the main board.
9-1
9. TROUBLESHOOTING
Solution