Removal Of Power Transformer, Capacitor And Diode (Rectifier); Magnetron Removal - Maytag RS511 Service Manual

Disassembly Procedures
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Removal of Power Transformer, Capacitor
and Diode (Rectifier)
1. Disconnect power to oven.
!
CAUTION
Failure to comply with earthing instructions may result
in personal injury due to electrical shock.
2. Remove outer case. Earth magnetron terminals to
capacitor housing with an insulated-handle
screwdriver by touching metal shaft first to the
capacitor housing then to the capacitor terminals.
NOTE: When reinstalling, see "Item 7 Note, Magnetron
Removal" or high voltage component failure may
result.
3. Disconnect and label wire terminals and remove
appropriate component mounting screw(s).
4. If installing a new diode see wiring diagrams for
correct connection.
5. When installing new capacitor, spacing from the can
to terminals or diode must be a minimum of
(6mm) or arcing will occur.

Magnetron Removal

• Magnetron assembly used in oven covered in this
manual is made up of the magnetron, permanent
magnets, housing, filter box, and R.F. Capacitors. It
can only be replaced as an assembly.
!
CAUTION
Failure to earth capacitor may result in injury due to
electrical shock. Capacitor terminals must be earthed
prior to performing maintenance in high voltage section.
1. Disconnect power to oven.
2. Remove outer case, see "Outer Case Removal"
procedure.
3. Disconnect magnetron leads after discharging them
to magnetron capacitor housing.
4. Remove magnetron by loosening nuts securing
magnetron studs to oven top and carefully remove
the tube assembly.
NOTE: These are 8mm locknuts.
5. If add-on parts are in good usable condition (thermal
cutouts, nuts, etc.), install them on the new tube
assembly. Record tube serial numbers. Tube
serial number is located on the bottom of housing.
Also record complete part number with suffix
letters and correct failure code.
©2002 Maytag Appliances Company
WARNING
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/
4
To avoid risk of electrical shock, personal injury, or
death, disconnect power to oven and discharge
capacitors before following any disassembly procedure.
6. Check replacement magnetron to ensure top wire
mesh gasket is installed.
7. Microwave ovens covered by this manual have a high
voltage circuit used in conjunction with the permanent
magnet (PM) magnetron tube assembly. To ensure
proper phasing of the complete high voltage
secondary circuit, transformer and magnetron tube
leads must be connected as shown in the wiring
diagram.
Failure to connect the components in this manner may
cause premature failure of the diode or other high
voltage failures.
8. To replace magnetron tube, insert antenna portion of
the tube assembly into the waveguide and while
holding magnetron tube assembly firmly against the
waveguide, loosely reinstall nuts securing magnetron.
Tighten nuts evenly to ensure proper sealing of the
wire mesh gasket.
"
NOTE: Filament leads must be connected as shown in
the wiring diagram to eliminate problems of high
voltage and component failures (usually diode/
short protector).
When connecting filament lead wires to the magnetron
terminals, be sure to connect lead wires in the proper
position. The # 5 lead wire from filament transformer
should be connected to "FA" terminal and lead wire
from high voltage capacitor should be connected to "F"
terminal.
9. Reconnect magnetron leads and install thermal
switch.
Quick connect junctions must be tight. Failure to
correct loose terminal will lead to further tube and/or
terminal failure.
10. Reinstall outer cabinet.
This unit must be unplugged to avoid electrical shock,
personal injury or death when working on the
microwave oven except when taking meter readings
requiring live voltage.
16021518 Rev. 0
!
CAUTION
!
CAUTION
!
CAUTION
!
WARNING
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