NEC D2246 Maintenance Manual page 159

8-inch winchester disk drive
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1/ /1/ /1
II
IXlxl
'--------...v,----~
POWER-ON CODE
POWER-ON COUNT
Figure C-ll Error/Count Log Power-On Count
The address field displays memory location 001 signifying power-on. The data field
displays the power-on count.
Pressing the NE key again initiates a search through the Error/Count Log. When an
error is detected, a drive status report (listed in Table C-3) is displayed in the address
field. The number of times the error occured is displayed in the data field. A sample LCD
display is shown in Figure C-12.
ERROR CODE
I-I -,
'_I _I
~
ERROR COUNT
Figure C-12 Error/Count Log Error Display Format
The above display indicates that the d4 error (loss of Index signal) occured three times.
Each time the NE key is pressed, the display advances to the next error. When all errors
have been displayed, or if no errors have occured, the display returns to the 000 memory
address and the total count of logged errors.
C.4.2 Sequential Operations Log
Memory addresses 100 through 27F are assigned to the Sequential Operations Log. This
log records errors and power-on and power-off operations. To access the Sequential
Operations Log press the LM key to start Log Read mode, and then press the P A key.
Use the numeric keypad to initiate a search through the Sequential Operations Log. To
examine the entire log, enter 100 from the keypad. Any other memory address from 101
through 27F can be entered. When the address has been entered, press the NE key to
display the contents of the address location. The LCD display format is shown in Figure
C-13.
C-16

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