Sanyo EM-C180US Service Manual page 10

B. TROUBLESHOOTING
CONDITION
Power with normal
voltage is applied. Place
a cup of water inside
microwave oven
* "TIME","1","0" ,"0"
and "START" keys
are touched
* Note:Oven will not accept settings of 60 through to 99 seconds.
TIME must be entered as 1 minute and 39 seconds for 99 seconds.
TROUBLE
Fuse(10A) blows
off immediately
No display
cooking time
Cooking ope-
ration will not
start
Oven does not
heat up
CHECK
Step down
Transformer
H.V Capacitor
Connection of FPC
from Touch key
board
Power circuit board
(See page 7)
Touch key board
(See page 6)
Control circuit
board
(See page 7)
Door sensing
switch
(See page 7)
Interlock switch
(See page 7)
Control circuit
board
(See pages 7 & 23)
See "HINT" on page
10
- 10 -
RESULT REMEDY
Shorted
Replace
Replace
Shorted
Incorrect
Reconnect
Voltage
Replace
incorrect
Resistance Replace
incorrect
Voltage
Replace
incorrect
No continuty
Replace
No continuty Replace
Voltage
Replace
incorrect