40496501TH Rev.1 134
C Although the access cover is close, the printer is in cover open state.
• Check that the cover open switch can normally switch on and off with manufacturing aid function.
• Can it switch on and off normally?
Yes No
• Is the connection of cables to the CN1 and the CN4 on the PRA board properly made?
Yes No
• Reconnect the cables.
▼
• Can the printer recover after the cover open switch/ribbon rotation sensor cable is
replaced?
No Yes
• End
▼
• Can the printer recover after the cable between the CN1 on the PRA board and the CN2
on the PMA board is replaced?
No Yes
• End
▼
• Can the printer recover after the PMA board is repleaced?
No Yes
• End
▼
• Replace the PRA board.
▼
• Is the claw of the access cover broken?
No Yes
• Replace the access cover.
▼
• Has the interlock lever been properly installed?
Yes No
• Reinstall the interlock lever.
▼
• Recheck the installation of the cover open switch.
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