Sharp R-2397 service manual Power Supply Cord Replacement

Models: R-2397

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POWER SUPPLY CORD REPLACEMENT

R-2397

POWER SUPPLY CORD REPLACEMENT

1.CARRY OUT 3D CHECKS

2.Release the cord bushing from the rear cabinet.

3.Disconnect the brown and blue wires of the power supply cord from the noise filter.

4.Loosen the single (1) screw holding the earth angle and earth wire of power supply cord.

5.Remove the power supply cord.

CAUTION: DO NOT ALLOW THE WIRE LEADS OF THE POWER SUPPLY CORD TO COME NEAR THE HIGH VOLTAGE TRANS- FORMER. BECAUSE THE HIGH VOLT- AGE TRANSFORMER BECOMES HOT.

Re-install

1.Insert the power supply cord into the cord bushing.

2.Connect the brown and blue wires of power supply cord into the terminals of noise filter, referring to pictorial diagram.

3.Insert the green/yellow wire of power supply cord into the earth angle, and tight the screw holding the earth angle.

4.Re-install the cord bushing to the rear cabinet.

5.Re-install the rear cabinet to oven cavity and the bottom plate with the eleven (11) screws and two (2) washers.

6.CARRY OUT 4R CHECKS.

BLK

Noise filter unit

 

 

WHT

 

 

 

Blue wire

 

 

Brown wire Power

 

 

supply

L

 

cord

Screw

 

 

 

 

Rear

Cord

 

bushing

 

cabinet

 

 

Green/Yellow

 

wire

 

 

Figure C-3. Power supply cord replacement

1ST LATCH, 2ND LATCH, 3RD LATCH, MONITOR, AND STOP SWITCHES REMOVAL

1.CARRY OUT 3D CHECKS.

2.Remove the control panel from the oven cavity refer- ring to “CONTROL PANEL REMOVAL”.

3.Remove the two (2) screws holding the latch hook to the oven cavity.

4.Open the door and pull the latch hook out of the oven cavity.

5.For 1st latch, 2nd latch or Monitor switch removal 5-1. Disconnect the wire leads from the switch.

5-2. Push the retaining tabs outward slightly and then pull the switch forwards and remove it from the

latch hook.

6.For 1st latch and stop switches removal

6-1. Disconnect the wire leads from the 1st latch and stop switches.

6-2. Remove the single (1) screw and nut holding the 1st latch and stop switches to the latch hook.

CAUTION: WHEN THE 1ST LATCH SWITCH AND 2ND. LATCH SWITCH ARE INSTALLED, THE TWO (2) TABS OF THE LATCH HOOK SHOULD BE BROKEN.

1ST, 2ND, 3RD LATCH SWITCH, STOP SWITCH AND MONITOR SWITCH ADJUSTMENT

In case 1st latch switch, 2nd latch, stop switch, 3rd latch switch and monitor switch do not operate properly due to a mis-adjustment, the following adjustment should be made.

circuit when the door is opened.

2.Re-install outer case and check for microwave leakage around the door with an approved microwave survey

1.Loosen the two (2) screws holding the latch hook.

2.With the door closed, adjust the latch hook by moving it back and forward, or up and down. In and out play of the door allowed by the latch hook should be less than 0.5mm. The vertical position of the latch hook should be placed where the stop switch and 1st, 2nd, 3rd latch switches have activated with the door closed.

The horizontal position of the latch hook should be placed where the monitor switch has activated with the door closed.

3.Secure the screws with washers firmly.

4.Make sure of the 1st, 2nd, 3rd latch switches, stop switch, and monitor switch operation. If those switches have not activated with the door closed, loose two (2) screws holding latch hook and adjust the latch hook position.

After adjustment, make sure of the following:

1. The stop switch and 1st, 2nd, 3rd latch switches interrupt

the circuit before the door open when the door release

lever is pulled, and then and monitor switch close the

Door release lever

Joint lever

Latch lever

Latch head

Latch head

Manual background Monitor switch

Manual backgroundManual background Latch hook

Manual backgroundManual background 2nd. latch switch

1st. latch switch

Manual backgroundManual backgroundManual backgroundManual background Stop switch

Manual background 3rd. latch switch

meter. (Refer to Microwave Measurement Procedure.)

Figure C-4 Latch Switch Adjustments

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Sharp R-2397 service manual Power Supply Cord Replacement