Sharp R-9200 Service Manual page 14

TEST PROCEDURES (CONT'D)
PROCEDURE
LETTER COMPONENT TEST
WEIGHT SENSOR ASSEMBLY AND IC3(MEMORY) TEST.
After replacing the weight sensor or IC3, carry out the following procedure in
order to calibrate the weight sensor.
food mav be over or under cooked.
If the weight sensor is not recalibrate, the
The following procedure should be carried out with microwave oven in a fully assembled condi-
tion (with outer case fitted).
1. Place the turnrable on the turntable support plate correctly, and close the door.
2. Plug the oven into a power point.
("88:88"
will appear on the display.)
3. Press the STOP/CLEAR pad. (Display shows M : II with sound of buzzer.)
4. Press the AUTO START/CLOCK pad. (Display shows fl
5. Press the GRILL pad. (Display shows II
0~)
0"
with sound of buzzer.)
6. Press the POWER LEVEL pad. (Display shows fl 0~)
7. Press the INSTANT COOK/START pad. (Display shows
" TEST"
with sound of buzzer.)
8. Press the "4" of number pads. (Display shows N
DISH"
and oven lamps come on.)
with sound of buzzer, and tuntable
9. After 13 seconds, make sure that the display shows "25000 - 35000"" with sound of
buzzer.
If display shows less than 25000 or more than 35000, weight sensor
10. Place the weight 2 Kg +2Og (water load 2 Kg +2Og) on the turntable.
is defect.
11. Press the "6" of number pads. (Display shows M
DISH"
and oven lamps come on.)
with sound of buzzer, and turntable
12. After 13 seconds, make sure that the display shows
"02300
-
02800""
with sound of
- buzzer.
If display shows less than 02300 or more than 02800, weight sensor is defect.
13. Disconnect the oven from power supply, and repeat above procedure items 1 to 7
14. Press the "7" of number pads, and make sure that the display shows
"02300 - 02800"R.
If display shows less than 02300 or more than 02800, IC3 is defect,
12