7-22
PROBLEM - E:
Unit does not heat up even if display counts down when
START key is touched for “HIGH POWER” cooking.
Check: 1. PRIMARY AND SECONDARY INTERLOCK SWITCHES
2. THERMOSTAT
1
2
Runs
Contact
OK
NO
continuity
Replace
circuit board
Normal
circuit board
Poor contact
Replace
circuit board
Normal
circuit board
Contact OK
Normal
contact
Correct
seating
Check contact of
connector S1
Check the contact of
relay 2(see page 7-15)
Runs
Runs
Resistance
incorrect
Check the continuity of
H.V.C. (see page 7-14)
Normal H.V.T.
Resistance
incorrect
Normal H.V.C.
Abnormal
Replace H.V.D.
Normal
Magnetron
Replace
Magnetron
Normal
Normal
H.V.D.
Check the
continuity of H.V.D.
(see page 7-16)
Replace H.V.C.
Normal
resistance
Replace H.V.T.
Normal
resistance
Measure resistance of
H.V.Transformer
(see page 7-15)
Runs
Runs
Runs
Runs
Summary of Contents for 721.80402400
Page 11: ...5 3 MATRIX CIRCUIT FOR TOUCH KEY BOARD KEY MATRIX...
Page 37: ...8 2 DOOR PARTS II 1005 1000 1002 1006 1011 1007 1009 1004 W109 1381 1008 EV...
Page 38: ...8 4 CONTROLLER PARTS II 2004 2381 2008 2006 W106 MBM2 EV...
Page 40: ...8 6 LATCH BOARD PARTS 4001 W111 W102 4000 4002 4003 4002 4004 EV...
Page 43: ...8 10 INSTALLATION PARTS 6008 W109 6011 6010 VINYL BAG 6009 EV...
