Service manual

43
R-1855A
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")
2. 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 (2) 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.
12.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 (2) screws holding the convection duct to the
oven cavity top side.
15.Remove two (2) screws holding the two heater mounting
holders to the convection duct.
16.Remove two (2) screws holding the convection heater to
the convection duct.
17.Now, the convection heater is now free.
NOTE: After installed the heating element completely,
bent top of the heating element holder to inside
using by long nose pliers as shown following
illustration.
Long nose plier
Heating element
holder
Heating
element
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.
20.Remove two (2) washers and pipe holding the convection
motor fan to convection motor shaft.
21.Remove two (2) screws holding the convection motor
mounting plate to convection duct.
22.Remove the convection motor assembly, convection
motor fan and one (1) washer from the convection duct.
23.Remove the convection motor fan and one (1) washer
holding the fan to convection motor shaft.
24.Remove the E-ring from the convection motor shaft.
25.Remove two (2) screws holding the convection motor to
convection motor mounting plate.
26.Now, the convection motor is free.
CONVECTION DUCT ASSEMBLY 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")
2. 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 (2) screws holding the latch hook to the
oven 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.
12.Now, each switch is free.
Re-install
1. Re-install open lever and each switch in its place. The
DAMPER MOTOR AND DAMPER SWITCH REMOVAL
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".)
2. Open the door and block it open.
3. Discharge the high voltage capacitor.
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.
DOOR SENSING SWITCH, SECONDARY INTERLOCK SWITCH, THIRD DOOR SWITCH AND MONITOR
SWITCH REMOVAL