INDEX: FAILURE / CAUSE
LS200 ELECTRICAL
COMPLAINT / (CONDITION): CAUSE / CORRECTIVE ACTION:
__________________________ _____________________________
Less than 3 lamps light. .... lamp is burned out. REPLACE PN 06400
.... lamp not seated correctly. SEAT lamp.
(3 lamps are wired in parallel)
.... lamp socket defective. REPLACE.
None of the lamps illuminate .... no voltage at A.C. source. TRY other power outlet.
(SWITCH IS “ON”, POWER RESTORE power.
CORD PLUGGED IN)
.... power cord loose. RESTORE connections
.... fuse(s) blown. CHECK for short to ground or other
high current path such as a line to line short. RESTORE
circuit to specifications prior to energizing LS200.
REPLACE fuses.
WARNING: ... burned out lamps. CHECK lamps...are they correct
ALLOW LAMPS TO COOL FOR part# for this Light. REPLACE lamp (Welch Allyn
at least 20 MINUTES. PN 06400).
.... defective (failed open) switch.
CHECK voltage across switch pole pairs in closed
position. If full transformer voltage is present, then
the switch is “OPEN” electrically. REPLACE defective
switch. TEST.
.... defective transformer, “OPEN”
primary or secondary windings or defective or “failed
OPEN” thermal protection* device in transformer
primary winding for international LS200. CHECK for
continuity in transformer primary winding. REPLACE
if ‘open’. *”non-resetting type” does not reset upon
cooling.
.... “OPEN” circuit in power connector.
REPLACE defective component.
.... power cord damaged. REPLACE cord.
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