Disassembly And Parts Replacement Procedure; Magnetron; Inverter Power Supply(U) - Panasonic NN-V659WB Service Manual

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.
CAUTION
When replacing the magnetron, be sure the antenna gasket
is in place.
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.

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
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.
NOTE
NEW H.V.
INVERTER
AIR GUIDE
POWER
PULL
2
13
DANGER
HIGH VOLTAGE
AREA
MAGNETRON
H.V. INVERTER(U)
INVERTER
SUPPORT
BRACKET
GROUNDING BRACKET
HOW TO DISCONNECT
SPECIAL LOCK CONNECTOR
PRESS THIS LEVER
1
LOCKING LEVER
0 8 -1 25 M
05-007M