Disassemble procedure
OUTER CASE REMOVAL
1) Disconnect the power supply cord from the outlet.
2) Remove the screws from the rear and along side edges of the case.
The outer case must be moved backward to be lifted off.
POWER SUPPLY CORD
1) Remove the outer case.
2) Disconnect two terminals, and remove one screw of the earth terminal.
CAUTION: DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE SERVICING
DOOR GROSS ASSEMBLY REMOVAL
1) Disconnect the power cord.
2) Remove the outer case.
3) Disconnect the leadwire from the reley PCB.
4) Open the door from oven. insert “JIG ” into the choke cover hole of door.
5) Lift the door from front cavity.
OUTER CASE REMOVAL
1) Disconnect the power supply cord from the outlet.
2) Remove the screws from the rear and along side edges of the case.
The outer case must be moved backward to be lifted off.
POWER SUPPLY CORD
1) Remove the outer case.
2) Disconnect two terminals, and remove one screw of the earth terminal.
CAUTION: DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE SERVICING
DOOR GROSS ASSEMBLY REMOVAL
1) Disconnect the power cord.
2) Remove the outer case.
3) Disconnect the leadwire from the reley PCB.
4) Open the door from oven. insert “JIG ” into the choke cover hole of door.
5) Lift the door from front cavity.
NOTE:
1. After replacing the door, be sure to check that the primary switch, monitor switch, and secondary switch operate normally.
2. After replacing the door, check for microwave energy leakage with a survey meter. Microwave energy must be below the limit of 5 mW/cm2. (with a 275 ml water load)
3. When mounting the door assembly to the oven assembly, be sure to adjust the door assembly parallel to the chassis. Also adjust so the door has no play between the inner door surface and oven frame assembly. If the door assembly is not mounted properly, microwaves may leak from the clearance between the door and the oven.
1. After replacing the door, be sure to check that the primary switch, monitor switch, and secondary switch operate normally.
2. After replacing the door, check for microwave energy leakage with a survey meter. Microwave energy must be below the limit of 5 mW/cm2. (with a 275 ml water load)
3. When mounting the door assembly to the oven assembly, be sure to adjust the door assembly parallel to the chassis. Also adjust so the door has no play between the inner door surface and oven frame assembly. If the door assembly is not mounted properly, microwaves may leak from the clearance between the door and the oven.
MAIN
PCB ASSEMBLY
1) Remove choke cover for door assemply.
2) Remove the two screws holding PCB bracket.
3) Remove PCB bracket.
4) Disconnect two leadwires from Main PCB.
5) Remove the seven screws holding Main PCB.
6) Remove the Main PCB from door assembly.
NOTE:
1. Be sure to use now choke cover assembly when you reassembly PCB assembly.
REAR
COVER ASSEMBLY REMOVAL1) Remove choke cover for door assemply.
2) Remove the two screws holding PCB bracket.
3) Remove PCB bracket.
4) Disconnect two leadwires from Main PCB.
5) Remove the seven screws holding Main PCB.
6) Remove the Main PCB from door assembly.
NOTE:
1. Be sure to use now choke cover assembly when you reassembly PCB assembly.
1) Remove screws on the rear cover assembly.
2) Disconnect the leadwire from Fan Motor and lift out the rear cover assembly.
2) Disconnect the leadwire from Fan Motor and lift out the rear cover assembly.
MAGNETRON REMOVAL
1) Remove rear cover assembly.
2) Disconnect the leadwire from damper motor, damper motor switch, MGT thermostat.
3) Disconnect the leadwire from the high voltage transformer and magnetron.
4) Remove the screw holding the damper assembly.
5) Remove the damper assembly.
6) Carefully remove the mounting screws holding the magnetron and the wave guide.
7) Remove the magnetron until its dome is clear from the wave guide.
NOTE:
1. When removing the magnetron, make sure its dome does not hit any adjacent parts, or it may be damaged.
2. When replacing the magnetron, be sure to install the magnetron gasket in the correct position and be sure that the gasket is in good condition.
3. After replacing the magnetron, check for microwave leakage with a survey meter around the magnetron. Microwave energy must be below the limit of 5 mW/cm2. (With a 275 ml. water load).
Make sure that gasket is rigidly attached to the magnetron. To prevent microwave leakage, tighten the mounting screws properly, making sure there is no gap between the waveguide and the magnetron.
FAN MOTOR ASSEMBLY REMOVAL
1) Remove rear cover assembly.
2) Remove the three screws holding the fan motor assembly.
3) Remove the fan motor assembly to the rear cover assembly.
HIGH VOLTAGE CAPACITOR, FUSE, TRANSFORMER AND DIODE REMOVAL
1) Remove rear cover assembly.
2) Discharge the high voltage capacitor.
3) Disconnect the leadwire from transformer, magnetron, Fuse and capacitor.
4) Remove the screw holding the transformer and remove the high voltage diode earth screw.
CONVECTION
MOTOR, HEATER REMOVEL
1) Remove rear cover assembly.
2) Disconnect the leadwire from powercord, HVT convection heater, MGT thermostat, MGT damper assembly.
3) Remove damper assembly.
4) Remove MGT assembly.
5) Remove the six screws holding the insulater-B assembly.
6) Remove the insulater-B assembly.
7) Remove the nut holding the convection fan.
8) Remove the convection fan.
9) Remove the two screws holding the convection motor.
10) Remove the convection motor.
11) Remove the three screws holding heater sleekest.
12) Remove thhe convection heater from bracket.
1) Remove rear cover assembly.
2) Disconnect the leadwire from powercord, HVT convection heater, MGT thermostat, MGT damper assembly.
3) Remove damper assembly.
4) Remove MGT assembly.
5) Remove the six screws holding the insulater-B assembly.
6) Remove the insulater-B assembly.
7) Remove the nut holding the convection fan.
8) Remove the convection fan.
9) Remove the two screws holding the convection motor.
10) Remove the convection motor.
11) Remove the three screws holding heater sleekest.
12) Remove thhe convection heater from bracket.
THERMISTOR
REMOVAL
1) Disconnect the leadwire from the reley PCB (CN3).
2) Remove the nut holding thermisters.
3) Remove the screws of the thermister.
1) Disconnect the leadwire from the reley PCB (CN3).
2) Remove the nut holding thermisters.
3) Remove the screws of the thermister.
INTERLOCK
SYSTEM
1) INTERLOCK MECHANISM
The door lock mechanism is a device which has been specially designed to eliminate completely microwave activity when the door is opened during cooking and thus to prevent the danger resulting
from the microwave leakage.
2) MOUNTING OF THE PRIMARY/MONITOR/SECONDARY SWITCHES TO THE LATCH BOARD
1) INTERLOCK MECHANISM
The door lock mechanism is a device which has been specially designed to eliminate completely microwave activity when the door is opened during cooking and thus to prevent the danger resulting
from the microwave leakage.
2) MOUNTING OF THE PRIMARY/MONITOR/SECONDARY SWITCHES TO THE LATCH BOARD
INSTALLATION
AND ADJUSTMENT OF THE LATCH BOARD TO THE OVEN ASSEMBLY
• Mount the latch board to the oven assembly.
• Adjust the latch board in the arrow direction so that oven door will not have any play in it when the door is closed.
• Tighten the mounting screw.
• Mount the latch board to the oven assembly.
• Adjust the latch board in the arrow direction so that oven door will not have any play in it when the door is closed.
• Tighten the mounting screw.
RELAY
PCB ASSEMBLY
1) Disconnect the leadwire from relay PCB.
2) Remove the two screws holding relay PCB assembly.
3) Remove the relay PCB assembly from cavity assembly.
4) Remove two screws holding relay PCB.
5) Remove the relay PCB from relay PCB support.
1) Disconnect the leadwire from relay PCB.
2) Remove the two screws holding relay PCB assembly.
3) Remove the relay PCB assembly from cavity assembly.
4) Remove two screws holding relay PCB.
5) Remove the relay PCB from relay PCB support.
STEAM
PCB ASSEMBLY
1) Remove the wire connected to the Steam PCB ASSEMBLY.
2) Loosen the screw that is fixing the Steam PCB ASSEMBLY.
3) Separate the Steam PCB ASSEMBLY from the Cavity.
4) Remove the Steam PCB ASSEMBLY from the hook that is holding the Steam PCB ASSEMBLY
1) Remove the wire connected to the Steam PCB ASSEMBLY.
2) Loosen the screw that is fixing the Steam PCB ASSEMBLY.
3) Separate the Steam PCB ASSEMBLY from the Cavity.
4) Remove the Steam PCB ASSEMBLY from the hook that is holding the Steam PCB ASSEMBLY
UPPER
SHEATH HEATER REMOVAL
1) Remove three hex nuts holding the sheath heater.
2) Remove gasket and bracket holding heater.
3) Remove the thermister.
4) Remove the sheath heater from the oven cavity.
1) Remove three hex nuts holding the sheath heater.
2) Remove gasket and bracket holding heater.
3) Remove the thermister.
4) Remove the sheath heater from the oven cavity.
UPPER CHARCOAL HEATER REMOVAL
1) Disconnect the leadwire from charcoal heater.
2) Remove the screw holding bracket.
3) Remove two bracket.
4) Remove the charcoal heater from reflector.
STIRRER FAN MOTOR REMOVAL
1) Remove the two screws holding stirrer fan motor.
2) Remove the stirrer fan motor.
LAMP REMOVAL
1) Disconnect the leadwire from lamp.
2) Remove the lamp assembly fan insulator-U.
3) Remove the lamp from lamp assembly.
STEAM HEATER ASSEMBLY
1) Separate the lead-wire connected to the Steam Heater Assembly.
2) Separate the water tube connected to the Steam Heater Assembly and water pump.
3) Loosen the three screws fixing the Steam Heater Assembly.
4) Separate the Steam Heater Assembly from the Cavity
WATER PUMP
1) Loosen the five screws holding the Base Assembly at the front surface and the two screws at the back surfaces.
2) Separate the lead-wire connected to the Water Pump.
3) Separate each of the two water tubes connected to the water pump and water pipe and to the water pump and Steam Heater Assembly.
4) Loosen the two screws holding the Water Pump.
