Impax 2000, Manual

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25
SIMPLE REPAIRS
Before performing any service, be sure power is off.
Fuse Replacement:
Primary circuit protection is provided by a circuit breaker built into the IMPAX power switch; if
this trips, merely turn on the switch to reset it. There are two fuses located on the back panel of
the IMPAX console. If the power is on but the displays do not light up, check the 3 amp fuse. If
the display comes up but the monitor won’t count or the force measurements do not come up,
check the 1 amp fuse.
To remove a fuse, press the cap in and turn it counter-clockwise. If the fuse appears blown,
replace it, but if it appears OK it should still be checked with a meter or test light. Replace only
with type 3AG slow-blow fuses of the correct current rating.
There is also a fuse located in the Satellite Box. If the lights on this box do not light, but the
IMPAX console is OK, remove the cover of the Satellite Box and inspect the fuse clipped on the
board. If bad, replace only with type 3AG slow-blow 1 amp fuse.
Lamp Replacement:
If a lamp on the Satellite Box will not light, unscrew just the colored lens which covers it. Do
not unscrew the ring which surrounds it. Be sure the power to the lamp is turned off, then
remove it by pressing the bulb in slightly and turning it one-sixth of a turn counter-clockwise. It
will then pull straight out. If it is burned out, replace only with a #1893 or other approved
equivalent. Many standard 12 volt bulbs will not be very bright.
Cable Inspection:
If there is reason to believe that a sensor cable has been damaged, it should be inspected for cuts,
abrasions, or undue crushing. Sensor cables may be repaired, but splicing of the damaged
section or complete replacement is recommended.
Damaged power cables are a safety hazard and should be repaired immediately according to
applicable electrical codes.
Plug and socket connectors should be inspected for damage, strain, or pulled-out wires. Unplug
the connection and inspect the mating contacts. Cables and connectors may be checked with a
meter or test light; defective assemblies should be spliced or replaced.
Program Memory (EPROM) Replacement:
To replace the program memory chips with a new program supplied by PTG/IMPAX, follow the
steps below. Before beginning, you may wish to display and write down any job or shift totals
which the IMPAX memory contains; these may be lost when the program is changed.