Operating Voltage Setup; Printed Circuit Board Connector And Fuse Locations - Digital Equipment LA50 Technical Manual

J5
J6
D JB~
CARRIAGE
TRANSISTOR
ASSEMBLY
_ 1
J - 7
~/--~\
/ FUSE FU1
7
POWER
INTERFACE TRANSFORMER
COVER INTERLOCK (RA), FUSE FU2
PAPER-OUT AND
CARRIAGE SENSOR SWITCH
MA-10,395A
Figure 6-8 Printed Circuit Board Connector
and Fuse Locations
6.2.2 Operating Voltage Setup
Printer model RA and RD can operate at either 100 or 120 volts. Model RB and RC can operate at either
220 or 240 volts. The label on the fuse plate at the rear of the printer shows the operating voltage. The plug
mating of the power supply connector determines the operating voltage of the printer. Perform this proce-
dure to check the connector plug mating and to make a change if necessary.
1. Set the power switch to 0 and disconnect the ac power cord.
2. Remove the top cover (Paragraph 6.2.1 ).
3. Remove the two screws from the noise filter (Figure 6-5) and remove the filter to access the
power supply connector (Figure 6-9).
4. Check the plug mating of the connector.
If
you need to make a change, unplug the connector,
rotate one end, and replug the ends. Figure 6-9 shows the connector voltage settings. For exam-
ple, for the LASO-RA, the desired setting should read SET FOR 120 V AC.
5. Return the connector and noise filter to their original locations.
6. Replace the top cover.
6-7