HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL
Confidential
7-9
(5) RAM Check
This is to execute a stricter RAM check than a standard one. If the result turns out
unaccepted, it considers an error, and all the LEDs blink. If it turns out accepted, the
Ready LED keeps blinking.
The machine does not go back to the ready state unless the power is turned off and on.
(6) QA Process Inspection Printing
This is to print the four patters in order to check the printer quality. The printer
automatically returns to the normal status after this function is completed.
(7) DX (ShortBind) ON/OFF Switching
This is to switch ON (ShortBind) or OFF (LongBind (invalid for some models)) of the
duplex setting. Whenever switching the setting, the current setting is changed to the other
one.
(8) Printing for Maintenance
This is to print a list of all maintenance information including printer coverage information.
• Series name
• Serial Number:
• Cont. ROM VERSION
• RAM SIZE
• Remaining life of periodical replacement parts
• <Device Status>
Page Count:
Average Coverage:
• <Total Pages Printed>
MP TRAY:
TRAY 1:
TRAY2:
TRAY3:
DUPLEX:
• <Total Pages Printed>
A4/LETTER:
LGL/A4LONG/FOLIO:
B5/EXECUTIVE:
ENVELOPE:
A5:
OTHERS:
• <Error History (last 10 errors)>
The page counter when each error occurred is also indicated.
• <Total Pages Jams>
JAM MP TRAY:
JAM TRAY 1:
JAM TRAY2:
JAM TRAY3:
JAM INSIDE:
JAM REAR:
JAM DUPLEX:
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