Trouble Shooting Guide - Turbo Air TMW-1100E Service Manual

TROUBLE SHOOTING GUIDE

Following the procedure below to check if the oven is defective or not.
1) Check grounding before trouble shooting.
2) Be careful of the high voltage circuit.
3) Discharge the high voltage capacitor.
4) When checking the continuity of the switches, fuse or high voltage tranformer, disconnect one load wire from these
parts and check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to
your meter.
NOTE : When electric parts are checked, be sure the power cord is not inserted the wall outlet.
Check wire harness, wiring and connection of the terminals and power cord before check the parts listed below.
(TROUBLE 1) Oven does not operate at all : any inputs can not be accepted.
CONDITION
Fuse blows.
Check continuity of interlock
monitor switch with door closed
Check continuity of of primary
interlock switch contact with door
partially open until interlock
monitor switch contact close
Check continuity of primary
winding of low voltage
transformer
Disconnect one side of the lead
wire connected form high
voltage transformer to the high
voltage capacitor and operate
the unit
CHECK
Replace fuse
RESULT
Malfunction of
Continuity
interlock
monitor switch
No Continuity
Shorted
Continuity
contacts of
primary
interlock switch.
0 or infinite
Defective low
voltage
Approx.
transformer
260~320
(normal)
Normal
Defective high
voltage capacitor
Fuse again
Defective high
blows
voltage
transformer
20
CAUSE REMEDY
Replace
NOTE 1
Replace
NOTE 1
Replace
Replace
Replace