Vertex Standard VXR-7000 Service Manual page 8

Operating Manual Reprint
Changing Switching Regulator unit AC Mains Jumper Wiring
Before attempting this jumper wire change, remove the
AC power cord from the AC jack on the rear panel.
Referring to Figure 1, remove the 14 screws affixing
the top and bottom covers of the repeater, and remove
the covers.
Remove the eight screws affixing the shield cover for
the FILTER Unit, and remove the cover (see Figure
1).
Disconnect all wires and connectors from the FILTER
Unit, then remove the six screws affixing the Switch-
ing Regulator Unit, and remove it (the Switching Regu-
lator Unit is mounted with the FILTER Unit: Figure
2).
Referring to Figure 3, remove the four screws and re-
move the heatsink from the Switching Regulator Unit.
B
A
B
C
Figure 1
8
A
Referring to Figure 4, perform the correct jumper wir-
ing on the Switching Regulator Unit for the AC Mains
voltage used in your area (100-127 VAC or 207-253
VAC).
Replace the heatsink onto the Switching Regulator
Unit, then replace the Switching Regulator Unit onto
the chassis, and connect all wires and connectors to
the FILTER Unit.
Replace the AC fuse (FH6001) on the FILTER Unit
according to the AC Mains voltage range:
100 VAC (100-127 VAC): 5A
200 VAC (207-253 VAC): 3A.
Replace the shield cover and replace the top and bot-
tom covers. This completes the wiring change.
Important!: If you change the AC voltage range, you must
also change the AC fuse on the FILTER Unit. Do not re-
place with a slow-blow type fuse.
Figure 2
FILTER Unit
Switching
Regulator
Unit