Troubleshooting
Efficia CM Series Repair Guide 3-5
Troubleshooting Tables
Power Problems
Symptom Possible Cause Action
The monitor turns on with
battery power, but does not
with AC power.
The power cord is unplugged. Ensure that the AC power cord
is plugged into an outlet.
The power cord is broken. Replace the AC power cord.
The fuse is blown. Replace the fuse. See
“Replacing a Fuse” on
page 4-8.
The power supply cable
malfunctioned.
Replace the power supply
module. See “Removing the
Power Supply Module” on
page 4-17.
The power supply
malfunctioned.
Check output voltage on power
supply. If you do not measure
15 V, replace the power supply.
See “Removing the Power
Supply Module” on page 4-17.
The AC power connector
malfunctioned.
Replace the AC connector. See
“Replacing the Power Entry
Module” on page 4-12.
The main board malfunctioned. Replace the main board. See
“Replacing the Main Board” on
page 4-27.
The monitor turns on with AC
power, but does not with
battery power.
A battery is not present. Ensure that a battery or
batteries are installed.
The battery is not charged. Charge the battery. For more
information, see the Efficia CM
Series Service Guide.
The battery or connector is
loose.
Reseat the battery and the
battery cable.
The main board malfunctioned. Replace the main board. See
“Replacing the Main Board” on
page 4-27.
The monitor does not turn on
with either AC or battery
power.
The LCD, cables, battery,
power supply, or main board
malfunctioned.
Follow the steps shown in the
previous two symptoms. If the
problem is not resolved,
replace the LCD. See
“Removing the LCD Assembly”
on page 4-29.
The monitor keypad is worn. Replace the front panel. See
“Removing the LCD Assembly”
on page 4-29.
Only one of the Charging LED
colors is displayed.
The membrane switch
assembly malfunctioned.
Replace the front panel
assembly. See “Removing the
Rear Case” on page 4-10
To Next Page
Loading...
