COPYRIGHT
©
2002 CANON INC. 2001 2001 2001 2001 CANON Printer Board-N1/iN-E5 REV.0 JAN. 2002
5-3
CHAPTER 5 TROUBLESHOOTING
1.2 Functions of Service Mode
The functions of each service mode item are as follows:
PPG CHECK SUM/PS CHECK SUM
The host machine performs a check sum operation on the requested ROM bank. The
calculated Check Sum is displayed on the LCD.
COLD RESET A4/LETTER
The host machine sets the default to the selected paper size (A4/LTR), and resets it to
zero, if the page count is less than 50.
FEEDER MENU
You may select any of the following paper sizes for manual feed:
A4, LETTER, LEGAL, A5, B5-JIS, COM10, MONARCH, C5, DL, A3, B4, 11x17,
CUSTOM, STATEMENT, B5-ISO.
ERR/JAM LOG MENU
· PRINT=ERROR LOG
Indicates the times, codes, and locations of the most recent 20 errors.
· PRINT=JAM LOG (jam history output)
Indicates the times, codes, and locations of the most recent 20 jams.
FORMAT MENU
· FORMAT DISK
Initializes the hard disk.
· FORMAT FLASH
Initializes the flash ROM.
NVRAM MENU
· NVRAM=CHECK
Indicates the counter readings of the 3 NVRAMs on the printer board.
NVRAM1=built-in NVRAM, NVRAM2=IC4, NVRAM3=IC5
· NVRAM=DUPLICATE
Copies the contents of the existing NVRAM (EEPROM) at time of printer board re-
placement.
The NVRAM contains the following data: page counter readings of the printer, panel
settings of the printer, error/jam history, serial number.
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