R - 5 3 0 E K
R - 530EW
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
with the door opened (in this condition the plunger of the monitor switch is pushed in), the meter should indicate an open circuit. If improper operation is indicated, the switch may be defective. After testing the monitor switch, reconnect the wire lead to the monitor switch (COM) terminal and check the continuity of the monitor circuit.
5.Reconnect all leads removed from components during testing.
6.Reinstall the outer case (cabinet).
7. | Reconnect the power supply | Screw Driver |
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| cord after the outer case is | RED | WHT/WHT |
| installed. |
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8. | Run the oven and check all |
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| functions. |
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Monitor
Switch
Ohmmeter
Secondary Interlock Switch
HBLOWN MONITOR FUSE TEST
1.Disconnect the power supply cord, and then remove outer case.
2.Open the door and block it open.
3.Discharge high voltage capacitor.
4.If the monitor fuse is blown when the door is opened, check the primary interlock relay, secondary interlock switch and monitor switch according to the "TEST PROCEDURE" for those switches before replacing the blown monitor fuse.
CAUTION: BEFORE REPLACING A BLOWN MONITOR FUSE, TEST THE PRIMARY INTERLOCK RELAY, SECONDARY INTERLOCK SWITCH, DOOR SENSING SWITCH AND MONITOR SWITCH FOR PROPER OPERATION.
If the monitor fuse is blown by improper switch operation, the monitor fuse and monitor switch must be replaced with "monitor fuse and monitor switch assembly" part number
5.Reconnect all leads removed from components during testing.
6.Reinstall the outer case (cabinet).
7.Reconnect the power supply cord after the outer case is installed.
8.Run the oven and check all functions.
ITOUCH CONTROL PANEL ASSEMBLY TEST
The touch control panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore, unlike conventional microwave ovens, proper maintenance cannot be performed with only a voltmeter and ohmmeter.
In this service manual, the touch control panel assembly is divided into two units, Control Unit and Key Unit, and also the Control Unit is divided into two units, LSI Unit and Power Unit, and troubleshooting by unit replacement is described according to the symptoms indicated.
Before testing,
1)Disconnect the power supply cord, and then remove outer case.
2)Open the door and block it open.
3)Discharge high voltage capacitor.
4)Disconnect the leads to the primary of the power transformer.
5)Ensure that these leads remain isolated from other components and oven chassis by using insulation tape.
1.Key Unit. NOTE ;
1)Check Key unit ribbon connection before replacement.
2)Reconnect all leads removed from components during testing.
3)
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