Bottom Plate Assembly Removal; Engine Unit Removal; Tube Pump Assembly Removal - Sharp AX-1500J Service Manual

AX1500J(S)
2. After adjustment, check the following.
1. In and out play of the door remains less than 0.5 mm when in the
latched position. First check the position of the latch base angle
pushing and pulling right portion of the door toward the oven face.
Then check the position of the latch base angle, pushing and pull-
ing left portion of the door toward the oven face. Both results (play
in the door) should be less than 0.5 mm.

[9] BOTTOM PLATE ASSEMBLY REMOVAL

Before the control unit, fuse holder assembly, inverter unit, fan motor
and magnetron are replaced, removal of the bottom plate is required.
1. Disconnect the power supply cord, and then remove the outer case
and the back plate assembly.
2. Open the door and block it open.
3. Wait for 60 seconds to discharge the high voltage capacitors of the
inverter unit.
4. Disconnect the high voltage wire from the magnetron terminal with
insulated pliers.
5. Make the terminal (metal part) of the high voltage wire contact to
the magnetron body with insulated pliers.
6. Now, the capacitors of the inverter unit are discharged.
WARNING: Use the pliers that the portions of their handles are
insulated completely to avoid an electric shock.
7. Pull the reservoir (feed reservoir assembly) out of the set.
8. Remove the dew tray and drain accumulated water from the tray.
9. Disconnect the wire leads from the convection motor and the ther-
mal cut-out (convection).
10.In order to remove the bottom plate assembly, turn over the unit.
NOTE: When turning over the unit, first place its left or right side
down and then the top side down (otherwise, the convec-
tion motor and/or convection duct will be damaged).
11.Remove the nine (9) screws fixing the bottom plate assembly (bot-
tom face) to the left heat shield plate, the right heat shield plate, the
left hinge assembly, the right hinge assembly and the front plate of
the oven.

[10] ENGINE UNIT REMOVAL

1. Disconnect the power supply cord, and then remove the outer case
and the back plate assembly.
2. Open the door and block it open.
3. Wait for 60 seconds to discharge the high voltage capacitors of the
inverter unit.
4. Disconnect the high voltage wire from the magnetron terminal with
insulated pliers.
5. Make the terminal (metal part) of the high voltage wire contact to
the magnetron body with insulated pliers.
6. Now, the capacitors of the inverter unit are discharged.
WARNING: Use the pliers that the portions of their handles are
insulated completely to avoid an electric shock.
7. Remove the water tube from the engine unit assembly.

[11] TUBE PUMP ASSEMBLY REMOVAL

1. Disconnect the power supply cord, and then remove the outer case
and the back plate assembly.
2. Open the door and block it open.
3. Wait for 60 seconds to discharge the high voltage capacitors of the
inverter unit.
2. The door sensing switch and the secondary interlock switch open
within 3.0mm gap between the oven door and cavity face.
3. The monitor switch contacts (NC and COM) close when the door is
opened.
4. Reinstall the outer case cabinet and check for microwave leakage
around the door with an approved microwave survey meter. (Refer
to Microwave Measurement Procedure.)
12.Take the snap bands tying the harnesses out of the hole of the bot-
tom plate.
13.Lift the bottom plate assembly to remove it from the oven body.
NOTE: In order to prevent the fan duct covering around the mag-
netron terminal from hitting the terminal, slightly shift the
bottom plate assembly toward the left hinge assembly
and then lift the bottom plate assembly.
Mounting screws of bottom plate assembly
CAUTION: When the water tube is removed from the engine unit,
remained water may bleed from the engine unit.
8. Remove the wire harness from the heater terminal of engine unit
assembly by removing the four (4) screws.
9. Disconnect the engine thermistor from the wire harness.
10.Remove the three (3) screws which are holding the engine unit
assembly from inside of the oven cavity.
11. Remove the one (1) screw holding the thermo mounting angle to
the heat cover-right assembly.
12.Remove the one (1) screw holding the engine unit assembly to the
heat cover-right assembly.
13.Now, the engine unit assembly is free.
CAUTION: When the new engine unit is installed, the thermistor
(engine) and engine packing B should be reinstalled.
4. Disconnect the high voltage wire from the magnetron terminal with
insulated pliers.
5. Make the terminal (metal part) of the high voltage wire contact to
the magnetron body with insulated pliers.
6. Now, the capacitors of the inverter unit are discharged.
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