
APPENDIX
B–62075E/04
B. BOOT SYSTEM
362
The first page of the system alarm screen is displayed as shown below.
The following example indicates that the file SRAM backup battery on
the main board is weak.
F15M14 A6D2A
RAM PARITY ERROR (BATTERY LOW)
CNC–MAIN FILE–RAM
ERROR OCCURRED AT 1996–07–12 17:53:37
PROG COUNT : 00XXXXXX
CPU STATUS : XXXX
ACT TASK : 00XX
ERROR ADRS : 8XXXXXXX (00000000)
BUS MASTER : CNC–MAIN
PAGE UP OR DOWN
<First page>
D Replace the file SRAM backup battery.
D When the above continues to be displayed even after fitting a fresh file
SRAM backup battery, the following may be defective:
D File SRAM module (For an explanation of the mounting position,
see Sections 2.5.2 to 2.5.6.)
D Spindle module (For an explanation of the mounting position, see
Sections 2.5.2 to 2.5.4.)
D Main CPU PC board
When the error indicated above is displayed, the data on part program
storage has been lost. Before attempting to modify data (parameters, for
example) on part program storage, make a backup copy on a floppy disk
or other suitable media.
System alarm
(file SRAM backup
voltage drop)
(Important)