7-8 Troubleshooting
EN
Table 7-3. No AC Power
Cause Action
No correct voltage present at the outlet. Plug the power cord into another AC circuit
outlet.
Inform the customer that the correct line
voltage is not available at the outlet.
The power cord is not firmly plugged into the
printer and the outlet.
Insert the power plug firmly.
Blown fuse. 1. Check the fuse (F1) on the Power Supply.
2. Replace the fuses if necessary.
Defective power switch. Remove the DC Controller Assembly. Measure
the resistance between the two terminals of
the power switch (SW101) by applying the
tester probes to the terminals. The resistance
must be low (under 1 K
Ω)
when the power is
turned ON, and high (over 6 M
Ω
) when the
switch is turned OFF. Otherwise, replace the
Power Supply
.
Defective AC receptacle or AC power line. Check the printer’s AC receptacle and wiring
for the AC power line. If no problem is found,
replace the Power Supply.
