Read Sharp R-90GCK (serv.man10) Service Manual online
25
R-90GCK
Flat type
screw driver
screw driver
Terminal
insulator
insulator
Receptacle
Covers
1. Open covers of the terminal insulator by using small
flat type screw driver.
2. Remove the receptacle from the terminal insulator.
3. Now, the terminal insulator is free.
3. Now, the terminal insulator is free.
TERMINAL INSULATOR REPLACEMENT
Installation
1. Insert the receptacle into terminal insulator.
2. Close covers of the terminal insulator, as shown
1. Insert the receptacle into terminal insulator.
2. Close covers of the terminal insulator, as shown
illustrated below
Removal
1. CARRY OUT 3D CHECKS.
2. Remove the one (1) screw holding the green/ yellow
1. CARRY OUT 3D CHECKS.
2. Remove the one (1) screw holding the green/ yellow
wire of the power supply cord to the bottom plate.
3. Disconnect the blue and brown wire leads of the power
supply cord from the noise filter.
4. Nip the cord bushing with bushing pliers and release it
from the hole of the back plate.
5. Remove the cord bushing from the power supply cord,
and the power supply cord from the back plate.
6. Now, the power supply cord is free.
Reinstall
1. Reinstall the cord bushing to the power supply cord.
2. Insert the power supply cord with the cord bushing into
1. Reinstall the cord bushing to the power supply cord.
2. Insert the power supply cord with the cord bushing into
the hole of the back plate.
3. Hold the green/ yellow wire of the power supply cord to
the bottom plate with the one (1) screw.
4. Reconnect the blue and brown wire leads of the power
supply cord to noise filter, referring to the pictorial
diagram.
diagram.
POWER SUPPLY CORD REPLACEMENT
5. Not to be caught by the outer case cabinet, pass the
green/ yellow wire of the power supply cord under the
high voltage capacitor.
high voltage capacitor.
6. Reinstall the outer case cabinet and check that the
oven is operating properly.
Figure C-1. Power supply cord replacement
1. CARRY OUT 3D CHECKS.
2. Remove the one (1) screw holding the green/ yellow
2. Remove the one (1) screw holding the green/ yellow
wire of the power supply cord to the bottom plate.
3. Disconnect the blue and brown wire leads wire of the
power supply cord from the noise filter.
4. Remove the three (3) screws holding the back plate to
BACK PLATE REMOVAL
the bottom plate.
5. Remove the two (2) screws holding the right and left
chassis supports to the back plate.
6. Release the tabs of the chassis supports from the back
plate.
7. Now, the back plate with the back plate is free.
1. CARRY OUT 3D CHECKS.
2. Remove the back plate from the oven, referring to
2. Remove the back plate from the oven, referring to
“BACK PLATE REMOVAL”.
3. Disconnect the main wire harness from the high voltage
transformer.
4. Disconnect the filament leads of the high voltage
transformer from the high voltage capacitor and the
magnetron.
magnetron.
HIGH VOLTAGE TRANSFORMER REMOVAL
5. Disconnect the high voltage fuse from the high voltage
transformer.
6. Remove the four (4) screws holding the transformer
mounting angle to the bottom plate from under the
bottom plate.
bottom plate.
7. Remove the four (4) screws holding the high voltage
transformer to the transformer mounting angle.
8. Now, the high voltage transformer is free.
N
L
Back plate
Bottom plate
Power supply cord
Blue wire
Cord bushing
High voltage
capacitor
capacitor
Brown wire
Green/ Yellow
wire
wire
Noise filter
Screw
1. CARRY OUT 3D CHECKS.
2. Remove the back plate from the oven, referring to
2. Remove the back plate from the oven, referring to
“BACK PLATE REMOVAL”.
3. Disconnect the high voltage wire of the high voltage
rectifier assembly from the magnetron.
4. Disconnect the filament wire of the high voltage
transformer from the magnetron.
5. Remove the two (2) screws holding the magnetron
MAGNETRON REMOVAL
guide to the magnetron and remove it.
6. Disconnect the wire leads and the connector from the
solid-state relay.
7. Release the main wire harness from the hole of the
magnetron separator and the hook of the fan motor.
8. Remove the three (3) screws holding the magnetron
separator to the bottom plate and the thermal cover back.
9. Remove the magnetron separator from the oven.
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