R-480J
TEST PROCEDURE
POSSIBLE CAUSE
AND
DEFECTIVE PARTS
CONDITION | PROBLEM |
Home fuse blows when power supply cord is plugged into wall outlet.
FUSE F10A blows when power supply cord is plugged into wall outlet.
| Display | does | not | show |
OFF | anything | when | power | supply |
CONDITION | cord is plugged into wall outlet. | |||
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Display does not operate properly when STOP/CLEAR pad is touched.
Oven lamp does not light at
door opened. (Display appears.)
Oven does not start when the START pad is touched. (Display appears)
Oven lamp does not light (Display appears.)
Fan motor does not operate. (Display appears.)
Turntable motor assembly does not operate. (Display appears.)
Oven or any electrical parts does not stop when cooking time is 0 or STOP/CLEAR pad is touched.
ON | Oven seems to be operating | |||
CONDITION but little or no heat is produced | ||||
| in oven | load. | (Microwave | |
| power level is set at HIGH) | |||
| Oven does not seems to be | |||
| operating | properly when | ||
| MEDIUM | HIGH, | MEDIUM, | |
| MEDIUM LOW or LOW is set. | |||
| (Oven operates properly at HIGH | |||
| and when the STOP/CLEAR pad | |||
| is touched the oven stops.) | |||
| Oven goes into cook cycle but | |||
| shuts down before end of | |||
| cooking cycle. |
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| Oven stops as soon as when | |||
| the START pad is touched. | |||
| AH sensor does not end during | |||
| Sensor | Cooking | condition. | |
SENSOR | (Oven does not shut off after a | |||
cup of water is boiling by sensor | ||||
COOKING | ||||
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CONDITION cooking.) |
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| Oven stops at 16 sec. after | |||
| starting. |
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| CK = Check / RE = Replace | ||||||||||
A |
| B |
| C |
| D |
| E |
| E |
| E |
| F |
| G |
| G |
| H |
| H |
| I |
| J |
| K |
| L |
| M |
| N |
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| RE | RE | CK | CK | CK | CK | CK | CK | CK | CK | O | ||||||||||||||||||
MAGNETRON |
| POWER TRANSFORMER |
| H.V. RECTIFIER ASSEMBLY |
| HIGH VOLTAGE CAPACITOR |
| 1ST. LATCH SWITCH |
| 2ND. N D. INTERLOCK RELAY CONTROL SWITCH |
| MONITOR SWITCH |
| NOISE FILTER |
| THERMAL |
| THERMAL |
| FAN MOTOR |
| TURNTABLE MOTOR |
| FUSE F10A |
| HIGH VOLTAGE FUSE |
| TOUCH CONTROL PANEL |
| KEY UNIT |
| RELAY |
| FOIL PATERN ON P.W.B. | POWER SUPPLY CORD | OVEN LAMP OR SOCKET | SHORTED WIRE HARNESS | OPENED WIRE HARNESS | WALL OUTLET | HOME FUSE OR BREAKER | WRONG OPERATION | MISADJUSTMENT SWITCH | BLOCKED COOLING FAN | BLOCKED VENTILATION OPENING | AH SENSOR |
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8
