
B–62075E/04
2. HARDWARE
121
(b)STATUS LED display for the conversational function
(15–TFB, 15–TTFB, 15–MFB, 15TEF)
1. STATUS LED display transition when the power is turned on
No. LED display NC status
1 STATUS jjjj Power–off
2 STATUS zzjJ Waiting for initialization of the main CPU
(waiting for ID setting)
3 STATUS zzJj Initialized state
4 STATUS zzjj Normal state
2. STATUS LED display for the conversational function upon the
occurrence of an error (15–TFB, 15TTFB, 15TEF)
No. LED display NC status
1 STATUS LLzz An error occurred in another PC board.
2 STATUS LLjz A RAM parity error occurred on the PC board for
the conversational function.
3 STATUS zzLl A defective ROM module was detected on the PC
board for the conversational function.
4 STATUS zzJj The CPU for the conversational function
performed illegal processing.
3. STATUS LED display for the conversational function when an
error occurs (15–MFB)
No. LED display NC status
1 STATUS zzLL An error occurred in another PC board or the CPU
for the conversational function.
(c) ALARM LED display
No. LED display NC status
1 ALARM Jjj The CPU for the conversational function asserts
SYSFAIL.
2 ALARM jJj The PMC CPU asserts SYSFAIL.
3 ALARM JJj The PMC CPU is in the stop state.
4 ALARM jjJ An error (SLC error) occurred during data
transfer to or from DI/DO.
5 ALARM JJJ A RAM (RAM on the PMC engine module or PMC
DRAM module) parity error occurred in the PMC.