5-10
COMPONENTS
TEST PROCEDURE
RESULTS
FUSE
HEATER ELEMENT
(Wire leads removed.)
GRILLTHERMOSTAT
OVEN THERMOSTAT
MAGNETRON
THERMOSTAT
Check for continuity of the fuse with an
multi-meter.
NOTE: If the fuse is blown, check the primary, the secondary, and the monitor
switches, H.V.D. and H.V.C. before replacing the fuse.
If the fuse is blown by improper switch operation replace the defective switch
and the fuse at the same time. Replace just the fuse if the switches operate
normally.
NOTE: Make sure heater is fully cooled when tested.
Measure the resistance.
(Multi-meter scale: Rx1)
Normal:
*Grill heater
Approx. 42 ohm
(at 20 ~ 30
o
C)
Normal: more than 0.5 Mohm
Normal Abnormal
Measure the resistance with 500V-100M ohm
insulation resistance meter.
0°C~Approx.90°C Over 90°C
0°C~Approx.145°C Over 145°C
Summary of Contents for MC-7684B
Page 9: ...SCHEMATIC DIAGRAM 4 3 ...
Page 30: ...6 2 15006A 13552A 14890A 13213A 13720D 14026A 14970A WTP018 13581A 13650A DOOR PARTS EV ...
Page 33: ...6 5 WSZ085 466001 43501A 466003 466001 44510A 43500A 466001 LATCH BOARD PARTS EV ...
Page 35: ...6 7 63302A 56170D 63303A WSZ002 WTT021 647781 WTT030 BASE PLATE PARTS EV ...
Page 36: ......