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Disconnect the lead wires from the switches and check for the continuity of the switches, connecting an
Ohm-Meter to its terminals.
SWITCHES
Primary Interlock
Secondary Interlock
Interlock Monitor
CAUTION
: After checking the switches, make sure that the Interlock Monitor Switch is properly connected
according to the CIRCUIT DIAGRAM on page 3.
B. TROUBLE SHOOTING
CONDITION
Power is applied
with normal
voltage.
Timer is set
and close the
door.
CHECKOUT PROCEDURE FOR SWITCHES
CHECKOUT PROCEDURES
Connect an Ohm-Meter leads to terminals
"COM" and "NO" of Switch.
Connect an Ohm-Meter leads to terminals
"COM" and "NC" of Switch.
TROUBLE
Cavity Lamp
does not light
but oven
operates.
Cavity Lamp
does not light
and oven also
does not operate.
Oven does not
operate but
Cavity Lamp
lights.
DOOR OPEN
CHECK
Cavity Lamp.
Broken Lamp.
Primary Interlock
Switch
No continuity.
(See page 6)
Fuse (15A)
Blown Fuse.
No continuity.
Timer Switch.
Thermal
No continuity.
Protector
for Cavity.
Thermal
Protector
No continuity.
for Magnetron.
Secondary
No continuity.
Interlock Switch
(See page 6)
Power Control
No continuity.
Switch.
Resistance
H.V.Transformer
(See page 4)
H.V.Capacitor
Resistance
or H.V.Diode
(See page 5)
Resistance
Magnetron
(See page 4)
- 6 -
DOOR CLOSED
RESULT
REMEDY
Replace.
Replace
(See page 1)
Replace.
Replace Timer.
Replace.
Replace.
Replace
(See page 1)
Replace Timer.
Replace.
incorrect.
Replace.
incorrect.
Replace
incorrect.
(See page 9)
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