Fanuc

Fanuc alarm: 920 - SERVO ALARM (1-4 AXIS)

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, ,
920 - SERVO ALARM (1-4 AXIS)

Alarm Description

Servo alarm (first to fourth axis). A watchdog alarm condition occurred, or a RAM parity error occurred in the axis control card. Replace the axis control card.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 920 - SERVO ALARM (1-4 AXIS)) error message below.

Fanuc alarm: 921 - SUB CPU WATCHDOG ALARM SERVO ALARM (3/4 AXIS)

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate, 0i
921 - SUB CPU WATCHDOG ALARM SERVO ALARM (3/4 AXIS)

Alarm Description

This is a watchdog timer alarm related to the sub-CPU board or a
servo system alarm for axis 5 or 6. Replace the sub-CPU board or
the axis-5/6 control PC board.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 921 - SUB CPU WATCHDOG ALARM SERVO ALARM (3/4 AXIS) ) error message below.

Fanuc alarm: 920 - WATCHDOG ALARM SERVO ALARM (1/2 AXIS)

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate, 0i
920 - WATCHDOG ALARM SERVO ALARM (1/2 AXIS)

Alarm Description

This is a watchdog timer alarm or a servo system alarm for axis 1 to
4. Replace the master or axis control PC board.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 920 - WATCHDOG ALARM SERVO ALARM (1/2 AXIS)) error message below.

Fanuc alarm: 919 - DRAM PARITY : (BYTE 7)

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, ,
919 - DRAM PARITY : (BYTE 7)

Alarm Description

A RAM parity error occurred in the DRAM module. Replace the DRAM d lDRAM module.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 919 - DRAM PARITY : (BYTE 7)) error message below.

Fanuc alarm: 918 - DRAM PARITY : (BYTE 6)

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, ,
918 - DRAM PARITY : (BYTE 6)

Alarm Description

A RAM parity error occurred in the DRAM module. Replace the DRAM d lDRAM module.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 918 - DRAM PARITY : (BYTE 6)) error message below.

Fanuc alarm: 917 - DRAM PARITY : (BYTE 5)

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, ,
917 - DRAM PARITY : (BYTE 5)

Alarm Description

A RAM parity error occurred in the DRAM module. Replace the DRAM d lDRAM module.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 917 - DRAM PARITY : (BYTE 5)) error message below.

Fanuc alarm: 916 - LADDER EDITING CASSETTE RAMPARITY

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
916 - LADDER EDITING CASSETTE RAMPARITY

Alarm Description

This RAM parity error is related to low-order bytes of the ladder editing
cassette. Replace the ladder editing cassette.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 916 - LADDER EDITING CASSETTE RAMPARITY) error message below.

Fanuc alarm: 916 - DRAM PARITY : (BYTE 4)

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, ,
916 - DRAM PARITY : (BYTE 4)

Alarm Description

A RAM parity error occurred in the DRAM module. Replace the DRAM d lDRAM module.

Additional Suggestions & Alarm Clarification

None currently

Help Others
Post troubleshooting recommendations for (Fanuc alarm: 916 - DRAM PARITY : (BYTE 4)) error message below.

Fanuc alarm: 915 - LADDER EDITING CASSETTE RAMPARITY

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
915 - LADDER EDITING CASSETTE RAMPARITY

Alarm Description

This RAM parity error is related to low-order bytes of the ladder editing
cassette. Replace the ladder editing cassette.

Additional Suggestions & Alarm Clarification

None currently

Help Others
Post troubleshooting recommendations for (Fanuc alarm: 915 - LADDER EDITING CASSETTE RAMPARITY) error message below.

Fanuc alarm: 915 - DRAM PARITY : (BYTE 3)

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, ,
915 - DRAM PARITY : (BYTE 3)

Alarm Description

A RAM parity error occurred in the DRAM module. Replace the DRAM d lDRAM module.

Additional Suggestions & Alarm Clarification

None currently

Help Others
Post troubleshooting recommendations for (Fanuc alarm: 915 - DRAM PARITY : (BYTE 3)) error message below.
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