Component Testing Procedures
!
WARNING
To avoid risk of electrical shock, personal injury, or death, disconnect power to oven and discharge
capacitor before servicing, unless testing requires it.
RS5320010 Rev. 1
16
Illustration
Component
Testing
Results
COM
220
230
4
6
5
Transformer
1000 Watt
4
3
5
6
(COM)
1
(230V)
Discharge Capacitor
Remove all wires from terminals, and
measure resistance from:
230 to Common
220 to Common
Terminal 5 to 6
Terminal 4 to Earth screw on transformer
Terminal 4 to any other terminal
This transformer is equipped with a
155
°
C thermal cutout
1.3
Ω
1.3
Ω
<1
Ω
70
Ω
Infinite resistance should be
indicated, if not replace transformer.
COM
230
4
7
6
5
8
Transformer
1800 and 1400 Watt
#
4
#
1
#
2
#
5
#
6
#
7
#
8
Discharge Capacitor
Remove all wires from terminals, and
measure resistance from:
230 to Common
Terminal 5 to 6
Terminal 7 to 8
Terminal 4 to Earth screw on transformer
Terminal 4 to any other terminal
1
Ω
<1
Ω
<1
Ω
45
Ω
Infinite resistance should be
indicated, if not replace transformer.
Interlock switch
assembly
Monitor
Primary
Logic
Secondary
Disconnect wires to switch.
With door open measure resistance from:
Terminal C to NC Monitor
Terminal C to NO Primary
Terminal C to NO Logic
Terminal C to NO Secondary
With door closed measure resistance from:
Terminal C to NC Monitor
Terminal C to NO Primary
Terminal C to NO Logic
Terminal C to NO Secondary
Door Closed
C
C
C
C
NC
NO
NO
NO
Primary
Secondary
Monitor
Logic
Indicates continuity
Infinite
Infinite
Infinite
Infinite
Indicates continuity
Indicates continuity
Indicates continuity
D
E
K
B
C
A
H
F
G
Pin #1
Pin #1
J1
J2
Controller board
J1
1
10
J2
1
10
A—Not used
B—Normally open terminal on primary
switch
C—Output to high voltage transformer
D—Output to oven light, antenna and blower
motors
E—Not used
F—Triac MT1 terminal
G—Triac MT2 terminal
H—Triac gate terminal
K—Oven TCO protector
J1 connector
Pin 3 to terminal K
Pin 3 to terminal D
Pin 1 to Pin 3
With J1 connector disconnected
Pin 6 to Pin 7
Pin 6 to Pin 7
J2 connector used for touch panel ribbon
B to C—Line voltage
(Standby Condition)
B to C—0 volts
(Cook Condition)
D to K— Line voltage
(Idle Condition)
D to K—0 volts
(Standby and Cook
Conditions)
F to H—.75 volts AC approximately
(Cook Condition)
J1 connector
Line voltage (all conditions)
Line voltage (cook condition)
Line voltage (all conditions)
Door closed—continuity
Door open—open circuit
