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9 Line Feed / Space
Motor Driver
Alarm
High driver
temperature the
TSD signal has
not changed
Replace the following: main
control board linefeed motor
space motor
10 MPU Internal
RAM Alarm
Read/write error Replace the main control
board
11 Program ROM
Alarm
Checksum error Replace the ROM and / or
main control board.
12 RAM on Main
Control Board
Read/write error Replace the main control
board
13 CG ROM Alarm Checksum error Replace the main control
board and/or CG ROM
14 EEPROM Alarm No reaction when
the MPU reads
data
Replace the main control
board
15 Watchdog
Timeout Alarm
MPU hung up Power OFF then ON
16 NMI Signal Alarm NMI port of MPU
kept low
Replace the main control
board
17 BRK Instruction
Alarm
FFFF data
detected due to
MPU hang up
Replace the ROM on the
main control board
18 MPU Internal
RAM Alarm
Read/write error Replace the interface board
19 ROM alarm Check sum error Replace the interface board
20 RAM on I/F board
alarm
Read/write error Replace the interface board
then the main control board
21 Interface not
connected
Serial interface
board not
detected
Replace the interface board
replace the main control
22 Paper End Alarm From the cut
sheet feed or
bottom feed
paper end
Check paper supply. Refer
to RAP 04