Fault Correction; Power-Related Problems - Digital Equipment LA310 Service Manual

5.3 Fault Correction

5.3.1 Power-Related Problems

No indicators on when power is switched on.
1. If the printer is functioning correctly but no indicators are on, replace
the Console PCB assembly.
2. Test the power supply at the wall socket by relocating the printer or metering. If
faulty, contact the responsible site engineer.
3. Make sure the power cord is firmly inserted into both the printer and the wall
socket.
4. Switch the power off and disconnect the power cable. Check whether a fuse has
blown.
Check the fuse on the Power Supply and replace the fuse if necessary (see page
6-12):
630 mA for 220/240 V
1.25 A for 120 V
5. Check whether the secondary output of the transformer is normal.
a. Switch the power off and disconnect the power cable. Disconnect the 2-pin
connector J265 on the Main Board.
b. Connect the power cable, switch the power on and measure the AC voltage
from the secondary of the transformer.
If the measured voltage is not a nominal 30 VAC, switch the power off, disconnect
the power cable and replace the Power Supply.
If the measured voltage is a nominal 30 VAC, switch the power off, disconnect the
power cable and then replace the Main Board or/and the Mechanical Assembly.
Be sure to reconnect the 2-pin connector J265 to the Main board.
LA 310 - Service Manual
5-3