13
6.
DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE
6.1
Magnetron
1. Discharge the high voltage capacitors.
2. Remove 1 screw holding the air guide A.
3. Remove 2 screws holding the tie bar.
4. Remove the oven lamp and lead wire harness cables from
the Air guide A.
5. Remove the Air Guide A
6. Disconnect the 2 high voltage lead wires from the
magnetron.
7. Remove 4 screws holding the magnetron.
NOTE: After replacement of the magnetron, tighten
mounting screws properly making sure there is no gap
between the waveguide and the magnetron to prevent
microwave leakage.
6.2
Inverter Power Supply(U)
1. Discharge the high voltage capacitors.
2. Unplug 3 lead wire connectors from the Inverter Power
Supply board.
3. Remove 1 screw to release the inverter grounding bracket.
4. Remove 1 screw and remove the inverter PCB plus support
base from the oven.
5. Remove 1 screw to disconnect earth wire to magnetron.
6. Remove 4 screws holding inverter power supply board to the
Inverter bracket.
7. Replace with replacement PCB and follow the steps in
reverse.
CAUTIONS WHILE REPLACING INVERTER POWER
SUPPLY(U)
1. Make sure to leave grounding plate in its place.
2. Make sure to securely tighten grounding screw through the
side of chassis (base).
3. Securely connect 3 lead wire connectors.
4. Make sure the heat sink has enough space (gap) from the
oven. Take special care not to touch any lead wire to the
aluminium heat sink because it is hot.
CAUTION
When replacing the magnetron, be sure the antenna gasket
is in place.
NOTE
Magnetron used for this model is unique type for inverter
power supply system. Make sure to use the one as listed in
the part list.
NEW H.V.
DANGER
AIR GUIDE
MAGNETRON
0 8 -1 25 M
HIGH VOLTAGE
AREA
H.V. INVERTER(U)
INVERTER
GROUNDING BRACKET
SUPPORT
BRACKET
HOW TO DISCONNECT
1
05-007M
SPECIAL LOCK CONNECTOR
2
LOCKING LEVER
PRESS THIS LEVER
PULL
Summary of Contents for NN-V659WB
Page 30: ...30 16 DIGITAL PROGRAMMER CIRCUIT...
Page 31: ...31...
Page 35: ...35 NOTES...
Page 36: ...36 NOTES SM K PEN Printed in the UK S 4N30BP S 4N50BP...
