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 power.
Illustration | Component |
| Testing | ||
|
|
| Interlock switch assembly | Disconnect wires to switch. | |
Bottom |
|
|
| Tab | With door open measure resistance from: |
|
|
| COM | Monitor – Terminal COM - NC | |
Top | COM | Monitor | Monitor | ||
|
| Magnetron | NC | Primary – Terminal COM - NO | |
|
| Switch | Switch | ||
|
| Interlock |
|
| Secondary – Terminal COM - NO |
| NC |
|
|
| |
Top |
|
|
| NO |
|
| NO | Primary | Primary |
| With door closed measure resistance from: |
Bottom | Magnetron |
| |||
|
| Interlock |
| ||
| COM | Switch | Switch |
| Monitor – Terminal COM - NC |
|
| COM | |||
|
|
|
| ||
|
|
| Secondary | Primary – Terminal COM - NO | |
|
| Secondary | NO | ||
| NO | Switch | Secondary – Terminal COM - NO | ||
|
| ||||
|
|
|
| ||
| COM |
|
| COM |
|
|
|
|
| After verifying or replacing the | |
|
|
|
| Tab | |
|
|
|
|
| module, reconnect wires to switch |
|
|
|
|
| and check operation of monitor circuit |
|
|
|
|
| before operating the oven. |
Electronic Control Panel |
|
| |||
Results
Indicates continuity
Infinite Ω
Infinite Ω
Infinite Ω
Indicates continuity
Indicates continuity
There are two Monitor and Primary switches. See Wiring Diagram to identify proper wiring.
|
|
|
|
|
| Service Test Mode: | Open door, Press and Hold pad 3 for 5 |
|
|
|
|
|
|
| seconds to enter service test mode. |
|
|
|
|
|
|
| Press Pad 1 |
|
|
|
|
|
|
| Press Pad 2 |
|
|
|
|
|
|
| |
|
|
|
|
|
|
| |
|
|
|
|
|
|
| |
|
|
|
|
|
|
| Press Pad 3 |
|
|
|
|
|
|
| |
|
|
|
|
|
|
| |
|
|
|
|
|
|
| Press Pad 4 |
|
|
|
|
|
|
| |
|
|
|
|
|
|
| |
|
|
|
|
|
|
| Press Pad 5 |
|
|
|
|
|
|
| |
|
|
|
|
|
|
| ................................................Press Pad 6 |
|
|
|
|
|
|
| Press Pad 7 |
|
|
|
|
|
|
| |
|
|
|
|
|
|
| Press Pad 8 |
|
|
|
|
|
|
| Press Pad 9 |
|
|
|
|
|
|
| Press Pad 0 |
|
|
|
|
|
|
| Stop/Reset Pad |
|
|
|
|
|
| Error codes: | |
|
|
|
|
|
|
| |
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
SERVICE appears in the display
Indicates number of hours magnetron has been turned on Indicates number of times magnetron tube has been turned on and off
Indicates number of door cycles CLEAR (Press START pad to
reset service data.) Indicates amperage (Top Mag) Indicates amperage (Bottom Mag)
RESET (Call Service) N/A
N/A
N/A
Exit Service Test Mode
Replace Control Board
Replace Control Board Shorted or Open Keypad – Test and replace if necessary
Illustration | Component | Testing | Results |
Electronic Control | Keyboard assembly | Continuity is indicated as | Pad | Trace | Measurement | |
|
| 100 Ω and below. | 0 | 1 | & 8 | Continuity |
|
|
| 1 | 2 | & 8 | Continuity |
| 1 |
| 2 | 3 | & 8 | Continuity |
| 2 |
| 3 | 4 | & 8 | Continuity |
| 3 |
| ||||
| 4 |
| 4 | 5 | & 8 | Continuity |
| 5 |
| 5 | 6 | & 8 | Continuity |
| 6 |
| ||||
| 7 |
| 6 | 7 | & 8 | Continuity |
| 8 |
| ||||
|
| 7 | 1 | & 9 | Continuity | |
| 9 |
| ||||
| 10 |
| 8 | 2 | & 9 | Continuity |
| 11 |
| ||||
|
| 9 | 3 | & 8 | Continuity | |
|
|
| ||||
|
|
| QTY 2X | 7 | & 9 | Continuity |
|
|
| HOLD (0%) | 1 | & 10 | Continuity |
|
|
| DEFROST (20%) | 2 | & 10 | Continuity |
|
|
| MEDIUM (50%) | 3 | & 10 | Continuity |
|
|
| 4 | & 10 | Continuity | |
|
|
| TIME ENTRY | 5 | & 10 | Continuity |
|
|
| STOP/RESET | 6 | & 10 | Continuity |
|
|
| START | 7 | & 10 | Continuity |
©2006 Maytag Services | 16026795 | 21 |
