Oki MC770 - Circuit Related Service Call

45584901TH Rev.1
5-43 /
Oki Data CONFIDENTIAL
5.3.5 Circuit related service call
[F090] SRAM abnormality on the CU board
Classification Contents
Circuit related service call SRAM abnormality on the CU board
Check item Measure
SRAM Check the connection of SRAM
1. TurnthepowerOFF,andstartuptheSettingMode(08).
2. When“SRAMREQUIRESINITIALIZATION”isdisplayedonthe
LCD,checkthedestinationandthenpressthe[START]button.Ifthe
destinationisnotcorrect,keyinthecorrectoneandthenpressthe
[START] button. (SRAM is initialized.)
3. Aftertheconrmationmessageisdisplayed,pressthe[INTERRUPT]
button.
4. Perform the panel calibration (08-9050).
5. Enter the serial number (08-9601). Match it with the serial number on
thelabelattachedtotherearcoveroftheequipment.
6. Initialize the NIC information (08-9083).
7. Turn the power OFF and then start up with the Adjustment mode (05).
8. Perform“Automaticgammaadjustment”<PPC>(05-7869).(using[4]
[FAX]testpattern)
9. Perform“Automaticgammaadjustment”<PRT>(05-8008,8009).
(using[70][FAX]testpattern)
10. Turn the power OFF and then back ON.
CU board Board check
Replacement part Messure
SRAM on the CU board
CU board
[F350] SU board abnormality
Classification Contents
Circuit related service call SU board abnormality
Check item Measure
Combination of the firmware
version
• Checkthecombinationofthermwareversionofthesystemrmware,
PUrmware,andSUrmware.
• ReinstalltheSUrmware.
SU board Board check
Replacement part Measure
SU board