Error Codes
Troubleshooting
3-18 Efficia CM Series Repair Guide
Error Codes
When the monitor detects an error condition (depending on the type of error), an error
message appears on the screen or an error code is written to the Error Log. An error
code is an indication that the monitor detected an error in operation and service may
be required. An error code is a hexadecimal number that indicates the nature of the
error.
If an error occurs during monitoring, an audible alarm also sounds. Press the Alarm
Silence key to end the audible alarm.
The following table lists the error codes that correspond to monitor malfunctions and
actions to take when the error occurs. These errors are written to the Error Log. To view
or export the Error Log, see “Managing Logs” on page 3-42.
Code Description Possible Cause Action
257
(1 or 2)
System Error
Battery charger power
failure.
Replace the battery. See “Replacing
the Battery” on page 4-5.
If the problem persists, replace the
main board. See “Replacing the
Main Board” on page 4-27.
If the problem persists, replace the
AC power module. See “Removing
the Power Supply Module” on
page 4-17.
261
(1 or 2)
System Error
Battery is
overcharged.
Run the monitor without AC power.
If the problem persists, replace the
battery. See “Replacing the Battery”
on page 4-5.
If the problem persists, replace the
main board. See “Replacing the
Main Board” on page 4-27.
264
(1 or 2)
temp value
System Error
Battery is over
temperature.
Shut down (see“Shutting Down the
Monitor” on page 4-1) and restart
the monitor.
If the problem persists, replace the
main board. See “Replacing the
Main Board” on page 4-27.
401
System Error
Main board EEPROM
not read.
Shut down (see “Shutting Down the
Monitor” on page 4-1) and restart
the monitor.
If the problem persists, replace the
main board. See “Replacing the
Main Board” on page 4-27.