(3)Fatal Alarm

Table 6.3 (1/2)

ALARM

CATEGORY

MAIN CONTROL ALARM

ALARM

LED DISPLAY

REMARKS

12 15 17 20

ALARM 10

PROP UTILITY PRESTIGE BOLD

MPU internal

 

Read/write error

RAM alarm

 

 

Program ROM

 

Check sum error

alarm

 

 

RAM on Control

 

Read/write error

Board alarm

 

 

TROUBLESHOOTING

Replace Control/

Power Supply Board

Replace ROM or Con- trol/Power Supply Board

Replace Control/ Power Supply Board

6 – 3

FIRMWARE DETECTION ALARM

CG ROM alarm

EEPROM alarm

WDT (Watch Dog Timeout) alarm

NMI signal alarm

BRK instruction alarm

MPU internal RAM alarm

Check sum error

No reaction when MPU reads data

MPU is locked up and it ios reset after 65ms.

NMI port of MPU is kept low level.

FFFFdata is detected due to MPU locked up. Read/write error

Replace Control/

Power Supply Board

Replace Control/ Power Supply Board

Turn the power OFF and ON or replace Control/ Power Supply Board

Turn the power OFF and ON or replace Control/ Power Supply Board Replace ROM or Con- trol/Power Supply Board Replace I/F Board

SERIAL INTERFACE ALARM

ROM alarm

Check sum error

 

RAM on I/F board

Read/write error

alarm

 

I/F not mounted

No reaction from

serial I/F board

 

 

: LED Blink (200ms ON, 200ms OFF)

 

: LED Lights up

Replace ROM on I/F board or I/F Board Replace I/F Board

Replace I/F Board or Control Board.

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Oki 3391, Microline Printer, 3390 specifications 1/2

3390, Microline Printer, 3391 specifications

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