Series 16/18/160/180-Model C Maintenance Manual, GFZ-62755EN ...

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8. TROUBLESHOOTING B–62755EN/01If parity error is not released by clearing all memory, RAM on the mainboard or RAM module may be faulty. Change (4)RAM module onmain CPU board.Set all the data again, referring to chapter 3 “data input/output”. RAM module mountingposition1 : SRAM module (Part program editing, parameters) (2) Additional SRAM moduleSpecification : A20B–2902–0350–0352FROM/SRAM moduleSpecification : A20B–2902–0341, 0343A20B–2902–0411A20B–2902–0500, 0501(3)Low voltage of memory back up battery. Battery alarm occurs ifvoltage is 2.6V or less (3.0V rating).When the memory back up battery voltage is lowered, BAT isdisplayed at lower part of the screen.When battery alarm is lit, replace with new lithium batteries as soonas possible.Refer to 2.8 battery replacing item and change the batteries.(4)Power supply unit is faultyWhen alarm turns off by an operation of clearing all the memory,power supply unit may also be faulty.376
B–62755EN/018.TROUBLESHOOTING8.32ALARM 916 (DRAMPARITY ERROR)Cause and actionA parity error occurred in the DRAM module.The DRAM module on the main CPU board may be faulty. Replace theDRAM module. Main CPU boardSpecification: A20B–2901–0941, 0942A20B–2902–0461 377
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GE Fanuc AutomationComputer Numeric
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B-62755EN/01PREFACEPREFACEDescripti
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B-62755EN/01PREFACERelated manualsT
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B-62755EN/01 2.7 HOW TO REPLACE TH
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B-62755EN/01 7. AC SPINDLE (ANALOG
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B-62755EN/011DISPLAYAND OPERATION O
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B-62755EN/011. DISPLAY AND OPERATIO
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B-62755EN/012. HARDWARESCALE1 (JF21
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B-62755EN/012. HARDWARE2.4.6Connect
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B-62755EN/012. HARDWARE2.4.9Connect
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B-62755EN/012. HARDWARE2.4.11Remote
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B-62755EN/012. HARDWARE2.5LED DISPL
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B-62755EN/012. HARDWARE2.5.2Main CP
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B-62755EN/012. HARDWARENo. Name Spe
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B-62755EN/012. HARDWARE2.5.4Option
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B-62755EN/012. HARDWARE Location of
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B-62755EN/012. HARDWARE2.5.5Option
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B-62755EN/012. HARDWARE2.5.9I/O Car
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B-62755EN/012. HARDWARE2.5.1264-bit
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B-62755EN/012. HARDWARE2.6.3Control
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B-62755EN/012. HARDWARE2.6.4Modules
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B-62755EN/012. HARDWARE2.6.5CRT/MDI
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B-62755EN/012. HARDWARETable 1. Fus
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B-62755EN/012. HARDWARE2.12ADJUSTIN
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B-62755EN/013. INPUT AND OUTPUT OF
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B-62755EN/015. DIGITAL SERVO5DIGITA
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B-62755EN/015. DIGITAL SERVOAlarm1#
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B-62755EN/01APPENDIXC. LIST OF MAIN
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B-62755EN/01Numbers16-TC/MC, 160-TC
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B-62755EN/01INDEXMMain CPU board, 1
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Revision RecordFANUC MAINTENANCE
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