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Troubleshooting
Maintenance
840
No
Yes
Use this procedure to
determine if a problem is
caused by the Main board
or the Option Module.
Does the printer
print a copy of the
screeen?
No
Yes
Is
the voltage at
the end of the
connector
> 6.5 V?
Secure the
connector.
Replace the I/O
interface.
The I/O interface
module is OK.
Connect a printer to the
Centronics port and the printer
power source. Set up the Utility
I/O menu for Hcp Port Centronics
and Hcp Format to match the
printer.
Press the HARDCOPY button.
Connect the printer power
cable to the printer power
connector.
Connect a VGA compatible
monitor the the I/O interface
VIDEO connector.
No
Yes
Is
the display
on the external
monitor stable
and legible?
No
Yes
Is
connector P4
secured to the
power supply?
No
Yes
Is
connector P60
secured to the
Main board?
Secure the
connectors.
Replace the I/O
interface.
No
Yes
Is connector
P703 secured to
the Main board?
Secure the
connectors.
Replace the I/O
interface.
No
Yes
Does
the printer print
a copy of the
screen?
No
Yes
Is
the display
on the external
monitor stable
and legible?
Replace the Main
board.
Replace the Main
board.
Figure 827:I/O Interfaces Option Troubleshooting Procedure
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