Sharp R-1480 用户手册

31

the control panel.

17.Remove the key fixing plate from the control panel.
18.Tear the key unit from the key fixing plate.
19.Now, the key unit is free

NOTES FOR KEY UNIT REPLACEMENT
1. Do not reuse the torn key unit because the performance

of the adhesive becomes weak.

2. Before attaching a new key unit, wipe off remaining

adhesive on the key fixing plate surfaces completely with
a soft cloth soaked in alcohol.

3. When attaching the key unit to the key fixing plate, adjust

the upper edge and right edge of the key unit to the
correct position of  key fixing plate.

4. Stick the key unit firmly to the key fixing plate by rubbing

with soft cloth not to scratch.

1. Before installation of the new CPU into the control panel,

grasp the middle section between thumb and finger,
bend the display board forward 

a

 until 

b

 breaks as

shown in step 1.

2. To remove the middle section push both sides of the

middle section towards 

d

 until 

c

 breaks as shown in

step 2.

3. After removing the middle section, bend the display

board 90˚, positioning the jumper wires into the notches

CN-G

LSI

Control Unit

Middle
section

Break
point

Display
Board

b

c

Top edge of the display board

Middle
Section

Jumper
wires

b

a

c

d

Jumper
wires

Notches

Control 
panel

Locator pin

Clip (F)

Clip (E)

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of
"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Push the lever of positive lock

®

 connector.

5. Pull down on the positive lock

®

 connector.

CAUTION: WHEN CONNECTING THE POSITIVE LOCK

®

CONNECTORS TO THE TERMINALS, IN-
STALL THE POSITIVE LOCK

®

 SO THAT THE

LEVER FACES YOU

Terminal

Push

Pull down

4

5

Lever

Positive lock®

connector

of the display board as shown in step 3.

4. Insert the bottom edge of the display board under the tab

of control panel as shown in step 4.

5. Place the top edge of the display board on the clip (F).

And press the  display board downward as shown in step
4. (Holes in middle of display board should be positioned
into locator pins.)

6. After installing display board, press the CPU downward

90˚ until CPU is locked into place by the clips.

7. Hold the CPU with the four (4) screws.

8. After installing CPU, make sure jumper wires are not

bent, touching or broken.

1. Disconnect the power supply cord and remove the oven

from wall and remove outer case. (Refer to procedure of
"Removal of Oven from Wall" and "Outer case Removal")

2. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the control panel assembly, referring to the