Amana CRC21T2 Service Manual page 21

Component Testing Procedures
To avoid risk of electrical shock, personal injury, or death, disconnect power to oven and discharge capacitor
before servicing, unless testing requires it.
Illustration
Controller board
J1
Pin #1
G
F
H
A
C
B
K
E
D
J2
Pin #1
Touch Panel
Assembly
Conditions
Idle Condition:
Initial Power Up Condition:
Standby Condition:
Cook Condition:
RS2230003 Rev. 2
!
Component
A—Not used
B—Normally open terminal on primary
switch
1
10
C—Output to high voltage transformer
D—Output to oven light, antenna and blower
motors
E—Not used
F—Triac MT1 terminal
J2
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
Continuity is indicated as 100
Oven plugged in, display blank (no other components operating).
Apply power to oven with door closed—see, "Troubleshooting" section.
Open oven door, light and motors operate—see, "Troubleshooting" section.
Food load in oven, cook cycle initiated—see, "Troubleshooting" section.
WARNING
Testing
and below.
10
9
8
7
6
5
Split
4
3
2
1
21
Results
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
Pad Trace Measurement
1 7 & 4 Continuity
2 7 & 6 Continuity
3 6 & 5 Continuity
4 5 & 4 Continuity
5 5 & 3 Continuity
6 6 & 3 Continuity
7 9 & 6 Continuity
8 7 & 3 Continuity
9 8 & 7 Continuity
Time Entry 9 & 4 Continuity
Power Level 9 & 7 Continuity
Menu b/d 9 & 8 Continuity
Start 10 & 4 Continuity
Stop/Reset 10 & 9 Continuity