R-874 (serv.man3). Control pannel assembly, component replacement procedure and leakage measurement - Sharp Home Appliance Service Manual (repair manual). Page 10

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R-874M - 27
1. CARRY OUT 3D CHECKS.
2. Remove the wire leads as Positive lock
®
 connector
removal above.
3. Lift up the oven lamp from its retaining clips.
4. Now, the oven lamp is free.
Figure C-3. Oven lamp
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.
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.
POWER SUPPLY CORD REPLACEMENT
TOP HEATING ELEMENT REMOVAL
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.
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.
POSITIVE LOCK
®
  CONNECTOR REMOVAL
1. CARRY OUT 3D CHECKS.
2. Push the lever of positive lock
®
 connector.
3. Pull down on the positive lock
®
 connector.
CAUTION: WHEN YOU (SERVICE ENGNEERS) CON-
NECT THE POSITIVE LOCK
®
 CONNEC-
TORS TO THE TERMINALS, CONNECT
THE POSITIVE LOCK
®
 SO THAT THE LE-
VER FACES YOU (SERVICE ENGNEERS).
Figure C-2.  Positive lock
®
connector
BULB
LOCK
Terminal
Push
Pull down
1
2
Lever
Positive lock®
connector
Figure C-4 (a) Replacement of Power Supply Cord
Figure C-4(b). Power Supply Cord Replacement
1. CARRY OUT 3D CHECKS.
2. Remove the turntable motor cover from the base plate,
referring to "TURNTABLE MOTOR REPLACEMENT".
BOTTOM HEATING ELEMENT REMOVAL
3. Disconnect the wire leads from the bottom heating
element.
POWER
SUPPLY CORD
MOULDING
CORD STOPPER
OVEN CAVITY
BACK PLATE
SQUARE HOLE
OVEN LAMP SOCKET REMOVAL
Power supply cord
Green/ Yellow
wire
Brown wire
Oven cavity back plate 
Blue wire
Noise filter
Screw
L
TP
  F2 F 8 A
TL
RED
F1 20 A
WHT
N
  COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
R-874 S/MANUAL
11/7/01, 10:59 am
27
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