Sharp R-1880LS Service Manual page 46

R-1880LS/LST
1. Disconnect power supply cord, remove the oven from wall
and remove outer case. (Refer to procedure of "Removal of
Oven from Wall" and Outer case Removal")
. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Lift the left mounting screw off the tab and slide it down from
the base plate left.
5. Remove the one (1) screw holding the exhaust duct to the top
duct.
6. Remove the exhaust duct from the oven cavity.
7. Remove the heat protect top sheet from the top duct.
8. Remove the two () screws holding the hood intake duct L to
the heater cover L and the oven cavity front flange.
9. Disconnect the wire leads from the convection motor and
heater element.
10. Disconnect the connector of the main wire harness A
from the connector of the thermistor.
THERMISTOR REMOVAL
11. Remove one (1) screw holding the thermistor to the convection
duct.
1. Now, the thermistor is now free.
CONVECTION HEATER REMOVAL
13. Remove six (6) oven side screws holding the convection duct
to the oven cavity.
14. Remove two () screws holding the convection duct to the
oven cavity top side.
15. Remove two () screws holding the two heater mounting
holders to the convection duct.
16. Remove two () screws holding the convection heater to the
convection duct.
17. Now, the convection heater is now free.
NOTE: After installed the heating element completely,
1. Disconnect the power supply, remove the oven from wall,
remove outer case, remove the unit mounting screw and hood
intake duct R. (Refer to procedure of "Removal of Oven from
Wall", "Outer case Removal" and "Unit Mounting Screw and
Hood Intake Duct R Removal".)
. Open the door and block it open.
3. Discharge the high voltage capacitor.
DOOR SENSING SWITCH, SECONDARY INTERLOCK SWITCH, THIRD DOOR SWITCH AND MONITOR SWITCH REMOVAL
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")
. Open the door and block it open.
3. Discharge high voltage capacitor.
4. Remove the hood fan motor and the hood exhaust duct from
the oven cavity, referring to the procedure of " HOOD FAN
MOTOR, HOOD EXHAUST DUCT, OVEN LAMP SOCKET
AND AH SENSOR REMOVAL".
5. Remove the control panel assembly, referring to the procedure
of "CONTROL PANEL ASSEMBLY , CONTROL UNIT
AND KEY UNIT REMOVAL".
6. Bend the tab of the oven cavity face plate which prevent the
open lever from coming out.
7. Remove the open lever from to the oven cavity.
8. Remove the two () screws holding the latch hook to the oven
CONVECTION DUCT ASSEMBLY REMOVAL
DAMPER MOTOR AND DAMPER SWITCH REMOVAL
bent top of the heating element holder to inside
using by long nose pliers as shown following
illustration.
CONVECTION FAN AND MOTOR REMOVAL
18. Remove one (1) nut (turn to clockwise), spring washer and
washer holding the convection fan to the convection motor
shaft.
19. Now, the convection fan is now free.
0. Remove two () washers and pipe holding the convection
motor fan to convection motor shaft.
1. Remove two () screws holding the convection motor mounting
plate to convection duct.
. Remove the convection motor assembly, convection motor
fan and one (1) washer from the convection duct.
3. Remove the convection motor fan and one (1) washer holding
the fan to convection motor shaft.
4. Remove the E-ring from the convection motor shaft.
5. Remove two () screws holding the convection motor to
convection motor mounting plate.
6. Now, the convection motor is free.
4. Disconnect wire leads from damper motor and damper
switch.
5. Remove one (1) screw holding damper motor to damper motor
angle and bend the tab holding damper switch to damper motor
angle.
6. Damper motor and switch are free.
cavity front flange.
9. Remove the latch hook from the oven cavity front flange.
10. Disconnect the wire reads of each switch.
11. Remove each switch from the latch hook with pushing the
one (1) stopper tub holding each switch.
1. Now, each switch is free.
Re-install
1. Re-install open lever and each switch in its place. T he secondary
and third door switch in the lower position, door sensing
switch is in the upper position and the monitor switch is in
the middle position.
. Re-connect wire leads to each switch. Refer to pictorial
46
Long nose plier
Heating
element
Heating element
holder