Service manual

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.
RS2230003 Rev. 2 21
Illustration Component Testing Results
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—K
Pin 3—D
240 VAC
208 VAC
Pin 1—Pin 3
With J1 connector disconnected
Pin 6—Pin 7
Pin6—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 Condition)
Line Voltage
0 VAC
* (Cook Conditons)
Line Voltage
* (All Conditons)
Continuity test
Door closed—continuity
Door open—open circuit
Touch Panel
Assembly
Continuity is indicated as 100
Ω
and below.
1
2
3
4
5
6
7
8
9
Split
10
Pad
1
2
3
4
5
6
7
8
9
Time Entry
Power Level
Menu b/d
Start
Stop/Reset
Trace
7 & 4
7 & 6
6 & 5
5 & 4
5 & 3
6 & 3
9 & 6
7 & 3
8 & 7
9 & 4
9 & 7
9 & 8
10 & 4
10 & 9
Measurement
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Continuity
Conditions
Idle Condition:
Oven plugged in, display blank (no other components operating).
Initial Power Up Condition:
Apply power to oven with door closed—see, “Troubleshooting” section.
Standby Condition:
Open oven door, light and motors operate—see, “Troubleshooting” section.
Cook Condition:
Food load in oven, cook cycle initiated—see, “Troubleshooting” section.