Chapter 3.
Faults and Troubleshooting
41
3.4 Troubleshooting Guides
Not all printer problems are reported by an error message. Malfunctioning hardware can cause a
wide variety of problems without triggering a fault indication. The troubleshooting procedures in
this section will help you to repair hardware problems.
3.4.1
Printer Does Not Power Up When Switched On
There are four things that can cause this problem.
1.
A bad connection.
2.
A malfunctioning On/Off switch.
3.
Incorrect input power.
4.
A malfunctioning power supply.
CAUTION: Input power voltages can be lethal. Be very careful while performing
these procedures.
Step 1.
Check all power connections.
Is the printer plugged in?
Are the connections on the On/Off switch secure?
Are the input power connections on the Power Supply secure?
Are the Power Supply connections to the Controller Board secure?
Step 2.
Check the input power supply voltage. Input power should be 90
—
130 VAC or
180
—
264 VAC, single phase, 50 ± 3
—
60 ± 3 Hz. Check input power at the plug-in,
on the Power Supply side of the On/Off switch, and on the input side of the Power
Supply.
If input power at the plug-in is incorrect, either the printer power cord is defective or
the power supply is defective. Check power at the outlet to make sure the power
source voltage is correct. If the power source voltage is OK, the problem is in the cord.
If input power at the plug-in is OK, check power from the On/Off switch to the Power
Supply. If there is no power at the back of the On/Off switch when it is switched On,
the On/Off switch is defective and should be replaced.
If input power is OK on the back of the On/Off switch, check input power on the
Power Supply. If there is no input power at the Power Supply, the cabling from the
On/Off switch to the Power Supply is defective.
Step 3.
If input power to the printer Power Supply is OK, check output voltage of the Power
Supply. Power Supply output voltage should be approxi48 V DC. If the
output voltage is incorrect, remove and replace the Power Supply.
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