5
MODIFICATIONS
CAUTION: THE FOLLOWING INFORMATION IS FOR USE BY QUALIFIED INSTALLATION/SERVICE PERSONNEL.
Removable Rack-Handles:
The TMA120 has removable rack-handles. To remove the rack-handles: 1)
Remove the two screws from the side of each rack-handle. 2) Remove the rack-handles. 3) Replace the
mounting screws in the sides of the chassis.
Security Cover:
The TMA120 includes a removable front panel security cover. A hole in the security cover
provides access only to the power switch. To remove the security cover: 1) Using a 3mm hex wrench,
loosen the two captive security cover mounting screws. 2) Remove the security cover.
WARNING: TO REDUCE THE RISK OF SHOCK, DISCONNECT ALL POWER FROM THE UNIT BEFORE MAKING ANY INTERNAL
MODIFICATIONS OR EXTERNAL FIELD WIRING CONNECTIONS.
230V/115V AC Operation:
The TMA120 may be converted to 115V operation for use in other countries. To
convert to 115V operation: 1) Remove the fuse holder compartment from the lower portion of the rear panel
AC Power Cord receptacle. 2) Replace the fuse in the fuse clip with the same type and appropriate value
fuse (see table below). 3) Replace the fuse holder compartment.
115VAC FUSE VALUE
6A NB
230VAC FUSE VALUE
3A NB
USE ONLY WITH
250V FUSE
4) Select the correct position on the Power Selector Switch. The Power Selector is recessed into the
underside of the chassis, near the AC Power Cord receptacle.
bottom panel
rear panel
115V
230V
