CHECKOUT PROCEDURE FOR SWITCHES
Disconnect the lead wires from the switches and check for the continuity of the switches, connecting an
Ohm-Meter to its terminals.
SWITCHES
CHECKOUT PROCEDURES
DOOR OPEN
DOOR CLOSED
Primary Interlock
Connect an Ohm-Meter leads to terminals
“COM” and “NO” of Switch.
Secondary Interlock
Connect an Ohm-Meter leads to terminals
Interlock Monitor
“COM” and “NC” of Switch.
- 6 -
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
Power is applied
with normal
voltage.
Timer is set
and close the
door.
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.
Cavity Lamp.
Broken Lamp.
Replace.
Primary Interlock
Switch
(See page 6)
Fuse (15A)
Timer Switch.
Thermal
Protector
for Cavity.
Thermal
Protector
for Magnetron.
Secondary
Interlock Switch
(See page 6)
Power Control
Switch.
H.V.Transformer
(See page 4)
H.V.Capacitor
or H.V.Diode
(See page 5)
Magnetron
(See page 4)
No continuity.
No continuity.
No continuity.
No continuity.
No continuity.
No continuity.
Resistance
incorrect.
Resistance
incorrect.
Resistance
incorrect.
Replace
(See page 9)
Replace
(See page 1)
Replace
(See page 1)
Replace.
Blown Fuse.
Replace.
Replace.
Replace Timer.
Replace.
Replace.
Replace Timer.
CONDITION
TROUBLE
CHECK
RESULT
REMEDY
