M126/M127/M128 6-70 SM
6.5.13 OPTION CARD SERVICE CHECK
Option card service check
FRU Action
Option cards
Controller board
Option card
connection cable
WARNING:
Do not replace the
engine board and
controller board at
the same time. Each
board contains the
machine settings.
When either of these
boards is new, it
obtains the settings
from the other
board. Settings are
lost when both are
new and replaced at
the same time.
Card
Remove all the option cards from the device.
Install each card individually. Restart the machine after each card
is installed.
Remove the card and repeat the previous step with a different
card till all cards are checked.
When a faulty card is found, replace the card (
p.4-87 "Option
Board Installation and Removal"). If the error persists after
replacing the option card, replace the controller board (
p.4-7
"Controller Board Removal").
If there are no errors found testing the cards individually, install the
cards on at a time. Restart the machine after each card is
installed.
Cables
If the cards do not trigger an error, check the option card
connection cables for continuity.
6.5.14 USB PORT SERVICE CHECK
1. Perform a print test to make sure the machine prints correctly. Verify that the indicator light is
on, then print the menu settings by "Menu Settings Page" from the "Reports Menu" in the
menus.
2. Be sure the machine USB cable is designed for bidirectional printing.
3. Be sure the user’s application is set up correctly.
4. If the internal print test page prints correctly, the user’s application/printer driver is set up
correctly, and the USB cable is installed, but the machine still fails to print on command from
the host computer, then replace the controller board.
5. Check the USB cable for continuity.
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