1 SCHEMATIC DIAGRAM 5
2 DESCRIPTION OF OPERATING SEQUENCE
6
2.1. Variable power cooking control
6
2.2. Inverter power supply circuit
6
2.3. Inverter defrost
6
2.4. Sensor cooking
6
2.5. Sensor reheat
7
3 CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING
8
3.1. Check the grounding
8
3.2. Inverter warnings
8
3.3. Part replacement.
9
3.4. When the 20A fuse is blown due to the malfunction of the
monitor interlock switch:
9
3.5. Avoid inserting nails, wire etc. through any holes in the
unit during operation.
9
3.6. Verification after repair
9
3.7. Sharp edges
9
4 COMPONENT TEST PROCEDURE
10
4.1. Primary, Secondary Interlock Switch & Power Relay RY1
10
4.2. Monitor Switch
10
4.3. Magnetron
10
4.4. Inverter power supply (U)
11
4.5. Humidity sensor
11
5 MEASUREMENTS AND ADJUSTMENTS
12
5.1. Adjustment of primary interlock switch, secondary interlock
switch and monitor switch.
12
5.2. Measurement of microwave output
12
6 PROCEDURE FOR MEASURING MICROWAVE ENERGY
LEAKAGE
13
6.1. Equipment
13
6.2. Procedure for measuring radiation leakage
13
6.3. Record keeping and notification after measurement
13
6.4. At least once a year, have the radiation monitor checked
for calibration by its manufacturer.
14
7 TROUBLESHOOTING GUIDE
15
7.1. Troubleshooting of inverter circuit (U) and magnetron
15
7.2. SIMPLE WAY OF H.V. INVERTER/MAGNETRON
TROUBLESHOOTING
16
7.3. H.V.INVERTER BOARD MAIN PARTS LIST
(F606Y8X00AP)
16
8 EXPLODED VIEW AND PARTS LIST
17
8.1. EXPLODED VIEW
17
8.2. PARTS LIST
18
8.3. DOOR ASSEMBLY
20
8.4. ESCUTCHEON BASE ASSEMBLY
21
8.5. PACKING AND ACCESSORIES
22
8.6. WIRING MATERIALS
23
9 DIGITAL PROGRAMMER CIRCUIT
24
9.1. SCHEMATIC DIAGRAM
24
9.2. PARTS LIST
26
CONTENTS
Page Page
4
NN-SD291S / NN-SD291W
To Next Page
Loading...
