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Troubleshooting
7
7.6.6PC3: Reader Position Sensor
1 | Is the voltage across | →No | Replace PC3. |
| and GND 0V when the Power ON/OFF |
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| Switch is in the ON position and the light |
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| emitted by the Sensor LED is blocked? |
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| ↓ Yes |
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2 | Is the voltage across | →No | Replace PC3. |
| and GND DC5V when the light emitted by the |
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| →Yes | OK | |
| Sensor LED strikes the Sensor | ||
| photosensitive element? |
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7.6.7PC4: Scan Position Sensor
1 | Is the voltage across | →No | Replace PC4. |
| and GND 0V when the Power ON/OFF |
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| Switch is in the ON position and the light |
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| emitted by the Sensor LED is blocked? |
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| ↓ Yes |
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2 | Is the voltage across | →No | Replace PC4. |
| and GND DC5V when the light emitted by the |
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| →Yes | OK | |
| Sensor LED strikes the Sensor | ||
| photosensitive element? |
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7.6.8PU1: Power Unit
1 | Is the Fuse of PU1 blown? | →Yes | Replace Fuse. |
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| ↓ No |
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2 | Is the output voltage of each Connector | →No | Replace PU1. |
| correct when the Power Switch is in the ON |
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| →Yes | OK | |
| position? | ||
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7.6.9PU2: Projection Lamp Regulator
1 | Is the Fuse of PU2 blown? | →Yes | Replace Fuse. |
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| ↓ No |
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2 | Is the voltage across | →No | Replace PU2. |
| DC17.0V when the machine is in the reader |
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| →Yes | OK | |
| mode? | ||
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7.6.10 S1: Power Switch
1 | Are the circuits across 1 and 2, and 3 and 4 | →Yes | Replace S1. |
| conducting when the Power Switch is |
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| removed from the machine and in the OFF |
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| position? |
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| ↓ No |
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2 | Are the circuits across 1 and 2, and 3 and 4 | →No | Replace S1. |
| conducting when the Switch is in the |
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| →Yes | OK | |
| position? | ||
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