Troubleshooting Procedures
!WARNING
To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing, unless testing requires power.
Logic Board Connectors
Connector
Name
Pin | Description | Voltage | Comment/ |
Number |
|
| Connector Part Number |
J1A |
| Left Keypad connector A | 12 VDC |
| |
J1B |
| Left Keypad connector B | 12 VDC |
| |
J2A |
| Right Keypad connector A | 12 VDC |
| |
|
|
|
|
|
|
J2B |
| Right Keypad connector B | 12 VDC |
| |
J3 | 1 |
| Lower dryer thermistor | 5 VDC |
|
| 2 |
| Lower dryer thermistor | 5 VDC |
|
| 3 |
| Lower dryer moisture sensor | 24 VDC |
|
| 4 |
| Lower dryer moisture sensor | 24 VDC |
|
|
|
|
|
|
|
| 5 |
| Spare thermistor source | 5 VDC |
|
|
|
|
|
|
|
| 6 |
| Spare thermistor return | 5 VDC |
|
|
|
|
|
|
|
| 7 |
| Upper exhaust air thermistor | 5 VDC |
|
| 8 |
| Upper exhaust air thermistor | 5 VDC |
|
J4 | 1 |
| L1 to upper door switch | 120 VAC |
|
| 2 |
| Upper door switch to Lamp | 120 VAC |
|
|
|
|
|
|
|
| 3 |
| Chassis ground to logic board | Ground |
|
|
|
|
|
|
|
J6A | 1 |
| 12 VDC power | 12 VDC | DC connections to Power & |
|
|
|
|
| Relay Board. |
| 2 |
| Power Supply Common | Common | |
| 3 |
| 24 VDC power | 24 VDC |
|
| 4 |
| To shaker motor relay coil | 12 VDC |
|
| 5 |
| To upper blower motor relay coil | 12 VDC |
|
|
|
|
|
|
|
| 6 |
| To upper heater relay coil | 12 VDC |
|
|
|
|
|
|
|
| 7 |
| To water valve relay coil | 12 VDC |
|
| 8 |
| To spare relay coil | 12 VDC |
|
| 9 |
| To upper exhaust damper relay | 12 VDC |
|
|
|
| coil |
|
|
| 10 |
| To lower heater cycling relay coil | 12 VDC |
|
| 11 |
| To lower heater | 12 VDC |
|
|
|
| coil |
|
|
| 12 |
| To lower dryer motor relay coil | 12 VDC |
|
|
|
|
|
|
|
J10 | 1 |
| VCC from logic board | 5 VDC |
|
|
|
|
|
|
|
| 2 |
| Serial transmit signal | 5 VDC |
|
| 3 |
| Serial receive signal | 5 VDC |
|
| 4 |
| Serial signal common | DC GND |
|
|
|
|
|
|
|
J10A | 1 |
| DC common | DC GND |
|
|
|
|
|
|
|
| 2 |
| Reset Signal | 5 VDC |
|
|
|
|
|
|
|
| 3 |
| Serial transmit signal for logic | 5 VDC |
|
|
|
| board |
|
|
| 4 |
| VCC from logic board | 5 VDC |
|
| 5 |
| Serial receive signal for logic | 5 VDC |
|
|
|
| board |
|
|
| 6 |
| VPP from programmer box |
|
|
J11A | 1 |
| L1 for use on logic board | 120 VAC | 120 VAC connections to power & |
|
|
|
|
| relay board. |
| 2 |
| Upper door switch power to lamp | 120 VAC | |
|
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| |||
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| 3 |
| Lower door switch signal | 120 VAC |
|
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|
| 4 |
| Gas igniter sense signal | 120 VAC |
|
| 5 |
| Neutral for switched 120 VAC | 120 VACN |
|
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| signals |
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©2003 Maytag Appliances Company | 16022785 Rev. 0 | 17 |
