Hardware Troubleshooting Guides; The Printer Does Not Power Up When Switched On; When The Printer Is Powered Up, Nothing Works Except The Fan - Tally T6090 Maintenace Manual

T6090 Maintenance Manual

Hardware Troubleshooting Guides

The printer does not power up when switched on

Troubleshooting Procedure
STEP 1.
STEP 2.
STEP 3.

When the printer is powered up, nothing works except the fan.

3–10
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 trouble-
shooting procedures in this section will help you to repair hardware problems.
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.
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?
Is the Power Supply connection to the Engine Controller CBA secure?
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. Remove and replace the
Power Supply.
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.
If input power to the printer Power Supply is OK, check output voltage of the Power
Supply. Power Supply output voltage should be approximately 48 VDC. If the output
voltage is incorrect, remove and replace the Power Supply.
The only thing that can cause this problem is a malfunctioning Engine Controller CBA.
Remove and replace the Engine Controller CBA.