Sharp R-772WM Service Manual page 25

COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
1. CARRY OUT 3D CHECKS.
2. Push the lever of positive lock
3. Pull down on the positive lock
CAUTION: WHEN YOU (SERVICE ENGNEERS) CON-
NECT THE POSITIVE LOCK
TORS TO THE TERMINALS, CONNECT
THE POSITIVE LOCK
VER FACES YOU (SERVICE ENGNEERS).
1. CARRY OUT 3D CHECKS.
2. Remove the wire leads as Positive lock
removal above.
3. Lift up the oven lamp from its retaining clips.
4. Now, the oven lamp is free.
Removal
1. CARRY OUT 3D CHECKS.
2. Remove the one (1) screw holding the green/yellow
wire to the cavity back plate.
3. Disconnect the leads of the power supply cord from the
noise filter, referring to the Figure C-4(a).
4. Release the power supply cord from the rear cabinet.
5. Now, the power supply cord is free.
Oven cavity back plate
Screw
Green/ Yellow
wire
Brown wire
Noise filter
Figure C-4 (a) Replacement of Power Supply Cord
1. CARRY OUT 3D CHECKS.
2. Remove the two (2) screws holding the two (2) termi-
nals of the main wire harness to the top heating
element.
3. Remove the two (2) screws holding the two (2) grill
heater angles to the top of the oven cavity.
1. CARRY OUT 3D CHECKS.
2. Remove the turntable motor cover from the base plate,
referring to "TURNTABLE MOTOR REPLACEMENT".
POSITIVE LOCK
®
connector.
®
connector.
®
CONNEC-
®
SO THAT THE LE-
OVEN LAMP SOCKET REMOVAL
® connector
POWER SUPPLY CORD REPLACEMENT
Power supply cord
Blue wire
L N
TP TL
F 8 A
TOP HEATING ELEMENT REMOVAL
BOTTOM HEATING ELEMENT REMOVAL
®
CONNECTOR REMOVAL
Positive lock®
connector
Figure C-2. Positive lock
Re-install
1. Insert the moulding cord stopper of power supply cord
into the square hole of the power angle, referring to the
Figure C-4(b).
2. Install the earth wire lead of power supply cord to the
oven cavity with one (1) screw and tight the screw.
3. Connect the brown and blue wire leads of power supply
cord to the noise filter correctly, referring to the Pictorial
Diagram.
Figure C-4(b). Power Supply Cord Replacement
4. Remove the two (2) grill heater angles from the oven
cavity.
5. Remove the top heating element from the top of the
oven cavity.
6. Now the top heating element is free.
3. Disconnect the wire leads from the bottom heating
element.
25
Terminal
1
Push
Lever
2
Pull down
®
connector
LOCK
Figure C-3. Oven lamp
MOULDING
CORD STOPPER
POWER
SUPPLY CORD
OVEN CAVITY
BACK PLATE
SQUARE HOLE
BULB