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Section 6: Troubleshooting
LM Basic 408e/412e Operator’s Manual Page 6-3
6.3 UNDERSTANDING THE LCD ERROR MESSAGES
When an error occurs, or when the printer needs to alert the user of something important, the
message on the LCD screen will contain the necessary information. Additionally, the Status LED
may light up or blink in combination with the LCD message. There is no built-in buzzer in the LM
408e/412e to provide audible warnings On error, turn the printer OFF and ON again to verify the
error..
Status
LED
Message on
LCD
Error Cause Solution
On MACHINE ERROR Machine Error Defective main board Contact qualified Ser-
vice Technician
On EEPROM ERROR EEPROM Read/
Write operation
failure
EEPROM is faulty,
improperly installed
Contact qualified Ser-
vice Technician
On PARITY ERROR RS232 Parity
Error
Problem with cable or
interface configuration
• Correct the interface
settings
• Adjust the I/F cable
On OVERRUN ERROR RS232 Overrun
Error
Problem with cable or
interface configuration
• Correct the interface
settings
• Adjust the I/F cable
On FRAMING ERROR RS232 Framing
Error
Problem with cable or
interface configuration
Correct the interface
settings or adjust the
cable
On BUFFER OVER Buffer Overflow Buffer capacity
exceeded, or wrong
interface configuration
Correct the host pro-
gram and interface pro-
tocol
Blinks HEAD OPEN Head Open Head Lock Lever not
latched, or micro-switch
faulty
Latch the print head
with Head Lock Lever
Blinks PAPER END Label End Paper end or improper
installation. Print head
open or micro switch
faulty
Latch and unlatch the
Head Lock Lever to
secure print head
Blinks RIBBON END Ribbon End Ribbon end or improper
installation. Sensors
need adjustment
• Correct the ribbon
loading.
• Clean and adjust the
sensors.
On SENSOR ERROR Sensor Wrong sensor selected.
Or misaligned sensor.
Paper meandering
• Choose correct sen-
sor and adjust posi-
tion.
• Clean ribbon path
On HEAD ERROR Head Replace print head Faulty print head
Off HEAD MISMATCH Head Incompatible or faulty
print head
Reinstall compatible
print head
On
(off for I/F
card error)
DOWNLOAD
ERROR
I/F NOT SUPPORT
DATA ERROR
WRITE ERROR
XXXXX ERROR
Data
• Error in memory R/W
or download
• Or interface/cable
error.
• Faulty memory area or
incorrect program
parameters.
• Check program.
• Adjust interface board
and cable.
• Check onboard mem-
ory.