— 33 —
PROBLEM E :
Unit does not heat up even if display counts down when START
key is touched for "NIGH POWER" cooking.
1
SEQUENCE
RESULT
2
Resistance
incorrect
Resistance incorrect
Replace H.V. capacitor
Runs
Runs
Normal
resistance
CHECK: 1. PRIMARY AND
SECONDARY
INTERLOCK
SWITCHES
2. THERMOSTAT
Check the contact
of Relay 2.
(See page 27)
No
continuity
Replace
circuit board
Correct seating
Replace circuit board
Normal
circuit board
Runs
Runs
Contact
OK
Poor contact
Runs
Normal
circuit board
Normal H.V.
capacitor
Contact
OK
Check contact of
connector S1.
Normal
resistance
Check the continuity
of H.V. capacitor
(See page 23)
Abnormal
Replace H.V.
diode
Runs
Runs
Normal
Replace
magnetron
Measure resistance
of H.V.transformer
(See page 22)
Check the
continuity
of H.V. diode
(See page 23)
Normal H.V.
diode
Normal
magnetron
Normal H.V.
transformer
Replace H.V.
transformer
Normal contact
Summary of Contents for MV-1155W
Page 8: ...6 OVERALL CIRCUIT DIAGRAM A SCHEMATIC DIAGRAM 7 ...
Page 40: ...CONTROLLER PARTS 38 WTT028 WTT021 WTT021 268711 24810P 26638A 07 23572A 24781M WTT021 EV ...
Page 42: ...LATCH BOARD PARTS 40 WSZ085 43500A 466001 466004 466002 43510A 466003 43501A EV ...
Page 45: ...INTERIOR PARTS III 43 WTT021 53551S 53551L WSZ002 WSZ002 53551R 568772 WTT021 WTT021 EV ...
Page 48: ......
