Read Sharp R-465 (serv.man5) Service Manual online
R-465(SL)
17
cavity, referring to "POWER SUPPLY CORD
REPLACEMENT".
REPLACEMENT".
5. Disconnect the wire leads from the turntable motor,
thermal cut-out (oven), thermal cut-out (MG.), all
switches on the latch hook, magnetron and oven lamp.
switches on the latch hook, magnetron and oven lamp.
6. Release the two (2) snap bands of the main wire
harness from the oven cavity and the lamp angle.
7. Remove the two (2) screws holding the front leg to the
base plate.
8. Remove the front leg from the oven cavity by releasing
the three (3) tabs.
7. Lift entire outer case from the unit.
NOTE: Setps 1, 2 and 3 form the basis of the 3D checks.
CAUTION: 1. DISCONNECT OVEN FROM POWER SUP
PLY BEFORE REMOVING OUTER CASE.
2. TO DISCHARGE THE HIGH VOLTAGE
CAPACITOR WAIT FOR 60 SECONDS
BEFORE TOUCHING ANY OVEN COM-
PONENTS OR WIRING.
BEFORE TOUCHING ANY OVEN COM-
PONENTS OR WIRING.
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
WARNING: Avoid possible exposure to microwave energy. Please follow the instructions below before
operating the oven.
1. Disconnect oven from power supply.
2. Visually check the door and cavity face plate for damage
2. Visually check the door and cavity face plate for damage
(dents, cracks, signs of arcing etc.).
Carry out any remedial work that is necessary before
operating the oven.
Do not operate the oven if any of the following conditions
exist;
1. Door does not close firmly.
2. Door hinge, support or latch hook is damaged.
3. The door gasket or seal or damaged.
operating the oven.
Do not operate the oven if any of the following conditions
exist;
1. Door does not close firmly.
2. Door hinge, support or latch hook is damaged.
3. The door gasket or seal or damaged.
4. The door is bent or warped.
5. There are defective parts in the door interlock system.
6. There are defective parts in the microwave generating
5. There are defective parts in the door interlock system.
6. There are defective parts in the microwave generating
and transmission assembly.
7. There is visible damage to the oven.
Do not operate the oven:
1. Without the RF gasket (Magnetron).
2. If the wave guide or oven cavity are not intact.
3. If the door is not closed.
4. If the outer case (cabinet) is not fitted.
1. Without the RF gasket (Magnetron).
2. If the wave guide or oven cavity are not intact.
3. If the door is not closed.
4. If the outer case (cabinet) is not fitted.
Please refer to ‘OVEN PARTS, CABINET PARTS, DOOR PARTS’, when carrying out any of the following removal
procedures:
procedures:
WARNING FOR WIRING
To prevent an electric shock, take the following
manners.
1. Before wiring,
manners.
1. Before wiring,
1) Disconnect the power supply.
2) Open the door and wedge the door open.
3) To discharge the high voltage capacitor, wait for
2) Open the door and wedge the door open.
3) To discharge the high voltage capacitor, wait for
60 seconds.
2. Don't let the wire leads touch to the following parts;
1) High voltage parts:
Magnetron, High voltage transformer, High
voltage capacitor, High voltage rectifier assembly
and High voltage fuse.
voltage capacitor, High voltage rectifier assembly
and High voltage fuse.
2) Hot parts:
Oven lamp, Magnetron, High voltage transformer
and Oven cavity.
and Oven cavity.
3) Sharp edge:
Bottom plate, Oven cavity, Waveguide flange,
Angles, Guides and other metallic plate.
Angles, Guides and other metallic plate.
4) Movable parts (to prevent a fault)
Fan blade, Fan motor, Switch.
3. Do not catch the wire leads in the outer case cabinet.
4. Insert the positive lock connector certainly until its
4. Insert the positive lock connector certainly until its
pin is locked. And make sure that the wire leads
should not come off even if the wire leads is pulled.
should not come off even if the wire leads is pulled.
5. To prevent an error function, connect the wire leads
correctly, referring to the Pictorial Diagram.
OUTER CASE REMOVAL
To remove the outer case, proceed as follows.
1. Disconnect the oven from power supply.
2. Open the oven door and wedge it open.
3. To discharge the high voltage capacitor, wait for 60
1. Disconnect the oven from power supply.
2. Open the oven door and wedge it open.
3. To discharge the high voltage capacitor, wait for 60
seconds.
4. Remove the five (5) screws from the the rear cabinet.
5. Remove the two (2) screws along the right and left
5. Remove the two (2) screws along the right and left
sides of outer case.
6. Slide the entire outer case back out about 2.5 cm to free
it from retaining clips on the cavity face plate.
Before removal of the high voltage transformer, high
voltage capacitor, high voltage rectifier, magnetron, high
voltage fuse, fan motor and turntable motor, the oven
cavity must be removed from base plate as follows.
Removal
1. CARRY OUT 3D CHECKS.
2. Remove the outer case (refer to "OUTER CASE
voltage capacitor, high voltage rectifier, magnetron, high
voltage fuse, fan motor and turntable motor, the oven
cavity must be removed from base plate as follows.
Removal
1. CARRY OUT 3D CHECKS.
2. Remove the outer case (refer to "OUTER CASE
REMOVAL").
3. It is recommended that the door is removed from the
oven cavity. Refer to "DOOR REPLACEMENT".
4. Remove the the power supply cord from the oven
OVEN CAVITY ASSEMBLY REMOVAL
R-465(SL)
18
9. Remove the two (2) screws holding the waveguide
flange of the oven cavity to the base plate.
10.Remove the three (3) screws holding the base plate to
the oven cavity front plate.
11.Remove the three (3) screws holding the base plate to
the oven cavity back plate.
12.Lift up the oven cavity assembly and remove it from the
base plate.
13.Now the high voltage transformer, high voltage
capacitor, high voltage rectifier, high voltage fuse and
fan motor can be found on the base plate.
fan motor can be found on the base plate.
14.The magnetron can be found at wavegide flange of the
oven cavity.
15. The turntable motor can be found under the oven
cavity bottom plate.
Reinstallation
1. Make sure that the electrical parts on the base plate are
1. Make sure that the electrical parts on the base plate are
reinstalled at their positions.
2. Make sure that the wire leads are reconnected to their
correct positions. Refer to the "PICTORIAL DIAGRAM".
3. Reinstall the oven cavity assembly on the base plate.
4. Hold the base plate to the oven cavity back plate with
three (3) screws.
5. Hold the base plate to the oven cavity front plate with
three (3) screws.
6. Hold the waveguide flange of the oven cavity to the
base plate with two (2) screws.
7. Reinstall the front leg to the oven cavity front plate.
8. Hold the front leg to the base plate with two (2) screws.
9. Insert the two (2) snap bands of main wire harness to
8. Hold the front leg to the base plate with two (2) screws.
9. Insert the two (2) snap bands of main wire harness to
the two (2) holes of oven cavity.
10. Reconnect the wire leads to the magnetron, all switches,
thermal cut-out (MG.), thermal cut-out (oven.), oven
lamp and turntable motor. Refer to the "PICTORIAL
DIAGRAM".
lamp and turntable motor. Refer to the "PICTORIAL
DIAGRAM".
11.Reinstall the power supply cord to the oven cavity,
referring to "POWER SUPPLY CORD
REPLACEMENT".
REPLACEMENT".
12.If the door has been removed, reinstall the door to the
oven cavity. Refer to "DOOR REPLACEMENT".
13.Now, the oven cavity assembly should be reinstalled.
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Remove the oven cavity assembly from the base plate.
2. Remove the outer case.
3. Remove the oven cavity assembly from the base plate.
Refer to "OVEN CAVITY ASSEMBLY REMOVAL".
4. Disconnect the wire leads (primary and high voltage
fuse) from high voltage transformer and the filament
leads from the magnetron and capacitor terminals.
leads from the magnetron and capacitor terminals.
5. Remove four (4) screws holding transformer to base
plate.
6. Remove transformer from base plate.
HIGH VOLTAGE TRANSFORMER REMOVAL
Reinstallation
1. Rest transformer on the base plate with its primary
1. Rest transformer on the base plate with its primary
terminals toward the left side.
2. Secure transformer with four screws to base plate.
3. Re-connect wire leads (primary and high voltage fuse)
3. Re-connect wire leads (primary and high voltage fuse)
to high voltage transformer and filament leads of
transformer to magnetron and high voltage capacitor.
Refer to "PICTORIAL DIAGRAM".
transformer to magnetron and high voltage capacitor.
Refer to "PICTORIAL DIAGRAM".
4. Reinstall the oven cavity assembly to the base plate.
Refer to "OVEN CAVITY ASSEMBLY REMOVAL".
5. Re-install outer case and check that oven is operating
properly.
HIGH VOLTAGE RECTIFIER, HIGH VOLATEGE FUSE AND HIGH VOLTAGE CAPACITOR
REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Remove the oven cavity assembly from the base plate.
2. Remove the outer case.
3. Remove the oven cavity assembly from the base plate.
Refer to "OVEN CAVITY ASSEMBLY REMOVAL".
4. Disconnect the high voltage fuse from the high voltage
capacitor and the high voltage transformer.
5. Now the high voltage fuse is free.
6. Disconnect the filament lead (short one) of the high
6. Disconnect the filament lead (short one) of the high
voltage transformer from the high voltage capacitor.
7. Remove one (1) screw holding capacitor holder to
base plate.
8. Remove one (1) screw holding high voltage rectifier
assembly to capacitor holder.
9. Disconnect rectifier terminal from the capacitor.
High voltage rectifier assembly is now free.
10.Remove the capacitor holder. The capacitor is now
free.
CAUTION: WHEN REPLACING HIGH VOLTAGE REC-
TIFIER AND HIGH VOLTAGE CAPACITOR,
EARTH SIDE TERMINAL OF THE HIGH
VOLTAGE RECTIFIER MUST BE SECURED
FIRMLY WITH A EARTHING SCREW.
EARTH SIDE TERMINAL OF THE HIGH
VOLTAGE RECTIFIER MUST BE SECURED
FIRMLY WITH A EARTHING SCREW.
Removal
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Remove the oven cavity assembly from the base plate.
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Remove the oven cavity assembly from the base plate.
Refer to "OVEN CAVITY ASSEMBLY REMOVAL".
4. Now, the wire leads should be disconnected from the
magnetron and thermal cut-out (MG).
5. Carefully remove the four (4) screws holding magnetron
to waveguide flange.
6. Remove magnetron with care so that magnetron
MAGNETRON REMOVAL
antenna is not hit by any metal object around antenna.
7. Remove the two (2) screws holding the magnetron
duct assembly to the magnetron.
8. Remove the magnetron duct assembly with thermal
cut-out (MG) from magnetron.
9. Now, the magnetron is free.
Reinstallation
1. Re-install the magnetron thermal duct assembly with
Reinstallation
1. Re-install the magnetron thermal duct assembly with
thermal cut-out (MG) to magnetron with the two (2)
screws.
screws.
R-465(SL)
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2. Re-install the magnetron to waveguide flange with the
four (4) screws.
3. Re-install the oven cavity assembly to the base plate.
Refer to "OVEN CAVITY ASSEMBLY REMOVAL".
4. Reconnect the wire leads to the magnetron and thermal
cut-out (MG). Refer to "PICTORIAL DIAGRAM".
REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Remove the oven cavity assembly from the base plate.
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Remove the oven cavity assembly from the base plate.
Refer to "OVEN CAVITY ASSEMBLY REMOVAL".
4. Disconnect the wire leads from the fan motor.
5. Release the main wire harness and the switch harness
5. Release the main wire harness and the switch harness
from the holes of the fan duct.
6. Remove each one (1) screw holding the separate
angles A, B and C to the base plate. And remove them
from base plate.
from base plate.
7. Remove two (2) screws holding the fan duct to the
base plate. And remove it from the base plate.
8. Remove the fan blade from the fan motor shaft according
to the following procedure.
9. Hold the edge of the rotor of the fan motor by using a
pair of groove joint pliers.
CAUTION:
*
*
Make sure that no metal pieces enter the gap
between the rotor and the stator of the fan motor
because the rotor is easily shaven by pliers and
metal pieces may be produced.
between the rotor and the stator of the fan motor
because the rotor is easily shaven by pliers and
metal pieces may be produced.
*
Do not touch the pliers to the coil of the fan motor
because the coil may be cut or injured.
because the coil may be cut or injured.
*
Do not disfigure the bracket by touching with the
pliers.
pliers.
10.Remove the fan blade from the shaft of the fan motor
by pulling and rotating the fan blade with your hand.
11. Now, the fan blade will be free.
CAUTION:
*
CAUTION:
*
Do not reuse the removed fan blade because the
hole (for shaft) may be larger than normal.
hole (for shaft) may be larger than normal.
12.Remove the two (2) screws holding the fan motor to the
fan duct.
13.Now, the fan motor is free.
5. Re-install outer case and check that the oven is
operating properly.
CAUTION: WHEN REPLACING MAGNETRON, BE
SURE THE R.F. GASKET IS IN PLACE AND
MOUNTING SCREWS ARE TIGHTENED
SECURELY.
MOUNTING SCREWS ARE TIGHTENED
SECURELY.
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Disconnect the wire leads from the oven lamp.
4. Remove the one (1) screw holding the oven lamp to the
2. Remove the outer case.
3. Disconnect the wire leads from the oven lamp.
4. Remove the one (1) screw holding the oven lamp to the
OVEN LAMP REMOVAL
lamp angle.
5. Remove the oven lamp from the lamp angle.
6. Now, the oven lamp is free.
6. Now, the oven lamp is free.
FAN MOTOR REMOVAL
14.Another fan motor can be removed in a same way.
INSTALLATION
1. Install the fan motor to the fan duct with the two (2)
1. Install the fan motor to the fan duct with the two (2)
screws.
2. Install the fan blade to the fan motor shaft according to
the following procedure.
3. Hold the center of the bracket which supports the shaft
of the fan motor on the flat table.
4. Apply the screw lock tight into the hole (for shaft) of the
fan blade.
5. Install the fan blade to the shaft of fan motor by pushing
the fan blade with a small, light weight, ball peen
hammer or rubber mallet.
hammer or rubber mallet.
CAUTION:
*
*
Do not hit the fan blade strongly when installed
because the bracket may be disfigured.
because the bracket may be disfigured.
*
Make sure that the fan blade rotates smooth after
installation.
installation.
*
Make sure that the axis of the shaft is not slanted.
6. Catch two holes of fan duct on two tabs of the base
plate.
7. Hold the fan duct assembly to the base plate with the
two (2) screws.
8. Re-install the separete angles A, B and C to the base
plate with each one (1) screw.
9. Insert the main wire harness and switch harness into
the holes and switch harness of the fan duct.
10.Connect the wire leads to the fan motor. Referre to
"PICTORIAL DIAGRAM".
11.Re-install the oven cavity assembly to the base plate.
Refere to "OVEN CAVITY ASSEMBLY REMOVAL".
12.Reconnect all wire leads removed from components.
Referre to "PICTORIAL DIAGRAM".
Gap
Rotor
Bracket
Stator
Groove joint pliers
Coil
Shaft
Axis
Stator
Rotor
These are the positions
that should be pinched
with pliers.
that should be pinched
with pliers.
Shaft
Table
Center of
bracket
bracket
Rear View
Side View
R-465(SL)
20
POWER UNIT REMOVAL
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Disconnect the wire leads and the connectors from the
2. Remove the outer case.
3. Disconnect the wire leads and the connectors from the
power unit.
4. Remove two (2) screws holding power unit to the base
plate.
5. With needle nose pliers, nip and push the head of the
two (2) PC support clips which hold the power unit.
And then release the clips from the hole of the power
And then release the clips from the hole of the power
unit.
6. Now the power unit is free.
Figure C-1. PC support clip
1. CARRY OUT 3D CHECKS.
2. Remove the turntable and turntable support from oven
2. Remove the turntable and turntable support from oven
cavity.
3. Lay the oven on it's backside. Remove the turntable
motor cover by snipping off the material in four corners.
4. Where the corners have been snipped off bend corner
areas flat.
5. Disconnect wire leads from turntable motor.
(See "Positive lock connector removal")
6. Remove two (2) screws holding turntable motor to
oven cavity.
7. Remove the TTM packing from the turntable motor
shaft.
8. Now the turntable motor is free.
9. After replacement use the one (1) screw to fit the
9. After replacement use the one (1) screw to fit the
turntable motor cover.
CAUTION: NO SHARP EDGES MUST BE EVIDENT
AFTER REMOVAL OF THE TURNTABLE
MOTOR COVER.
MOTOR COVER.
TURNTABLE MOTOR REMOVAL
POSITIVE LOCK
®
CONNECTOR (NO-CASE TYPE) REMOVAL
Terminal
Push
Pull down
1
2
Lever
Positive lock®
connector
POWER SUPPLY CORD REPLACEMENT
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Push the lever of positive lock
2. Remove the outer case.
3. Push the lever of positive lock
®
connector.
4. Pull down on the positive lock
®
connector.
CAUTION: WHEN CONNECTING THE POSITIVE LOCK
®
CONNECTORS TO THE TERMINALS, CON-
NECT THE POSITIVE LOCK
NECT THE POSITIVE LOCK
®
SO THAT THE
LEVER FACES YOU.
Figure C-2. Positive lock
®
connector
1. CARRY OUT 3D CHECKS.
2. Remove the outer case.
3. Remove the single (1) screw holding the green/ yellow
2. Remove the outer case.
3. Remove the single (1) screw holding the green/ yellow
wire to the bottom plate.
4. Disconnect the leads of the power supply cord from the
noise filter.
5. Release the moulding cord stopper of the power supply
cord from the square hole of the oven cavity back plate,
referring to the Figure C-3 (b).
referring to the Figure C-3 (b).
6. Now, the power supply cord is free.
Re-install
1. Insert the moulding cord stopper of power supply cord
into the square hole of the rear cabinet, referring to the
Figure C-3 (b).
Figure C-3 (b).
2. Install the earth wire lead of power supply cord to the
bottom plate with one (1) screw and tight the screw.
3. Connect the brown and blue wire leads of power supply
cord to the main wire harness correctly, referring to the
Pictorial Diagram.
Pictorial Diagram.
4. Re-install outer case and check that the oven is
operating properly.
Needle nose pliers
Power unit
PC support clip
Figure C-3 (a). Power Supply Cord Replacement
Figure C-3 (b) Power Supply Cord Replacement
Power Supply
Cord
Cord
Oven Cavity
Back Plate
Back Plate
Square
Hole
Hole
Moulding
Cord Stopper
Cord Stopper
Power supply
cord
cord
Brown wire
Noise Filter
Screw
Blue wire
Base plate
Green/Yellow
wire
