C. TROUBLE SHOOTING
Before following this troubleshooting read “TRIAL OPERATION” on page
•“DISPLAY” Problems, “A” thru “C”
• “HELP UP” Problems, “D” thru “E”• “BUZZER Problems, “F”
PROBLEM - A: “PLEASE SET TIME OF DAY” does not appear in display window when power supply cord is plugged into wall outlet.
Check: 1. POWER SUPPLY
1 2. FUSE (See “CHECKOUT PROCEDURES FOR FUSE BLOWING: on page
3. OVEN CAVITY THERMOSTAT
WH
RD
Measure voltage between pin 1 and pin 3 of connector CN1.
0 120
| 120V | Replace |
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| circuit board |
0 | 120 |
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Voltage | Correct | |
incorrect | ||
connections | ||
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NormalRuns circuit board
NormalRuns resistance
PROBLEM - B: Display does not show correct numbers and/or correct indications when programmed.
1
Measure resistance of touch key board after removing connector S1.
(See page
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| Normal |
| Check contact | ||||
| resistance |
| of connector S1 | |||||
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Resistance |
| Replace touch | ||||
| incorrect |
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| key board. | ||
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| Runs |
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| Contact |
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| Replace |
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| Normal |
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| ok |
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| circuit board |
| circuit board |
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Poor | Correct | Normal | Runs |
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contact | seating | contact |
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Normal touch |
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| Runs |
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key board |
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