7-21
PROBLEM - E:
Display does not start countdown when START key is touched.
Check:
1. TOUCH KEY BOARD (START KEY FUNCTION)
Check: 1. AIR VENTS
PROBLEM - D:
Unit operation seems to be normal but
no heating is produced in oven load.
1
1
Check continuity of connector
CN1 between Pin 11(PK) and
pin 12(BL) when the door is
closed
Continuity
OK
Check contact of
connector S1
Contact
OK
Replace
Circuit board
Correct
Correct
seating
Normal
circuit board
Normal
contact
Poor
Normal Secondary
switch
No
continuity
Adjust or replace door
sensing switch.
Runs
Runs
Runs
Check operation of fan
motor when ST
AR
T
key
is touched.
Measure resistance
of H.V
.capacitor
(see page 7-15)
Resistance
incorrect
Measure resistance
of fan motor
T
erminal
A~C: 35 to 50 ohms
T
erminal
A~B: 5 to 15 ohms
Resistance
incorrect
Replace
fan motor
Normal
circuit board
Replace
Normal
fan motor
circuit board
Normal
resistance
Replace H.V
.C.
Normal H.V
.C.
Normal
magnetron
Replace
Normal
operation
No
operation
Runs
Runs
Runs
Runs
33
Normal
resistance
33
Summary of Contents for AMV4204AAB
Page 9: ...5 1 OVERALL CIRCUIT DIAGRAM SCHEMATIC DIAGRAM I Check the Model No ...
Page 10: ...5 2 SCHEMATIC DIAGRAM II Check the Model No ADD Noise filter ...
Page 11: ...5 3 MATRIX CIRCUIT FOR TOUCH KEY BOARD 13 12 8 9 10 11 2 1 3 4 5 6 7 KEY MATRIX ...
Page 37: ...8 2 CONTROLLER PARTS 2004 2002 2381 2008 2006 2009 W130 2000 07 Check the Serial No EV ...
Page 39: ...8 4 LATCH BOARD PARTS W111 4004 4003 4002 4002 4001 4000 EV ...
Page 43: ...8 8 INSTALLATION PARTS VINYL BAG 6011 6009 6010 6008 EV ...
