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Troubleshooting | E1000 |
Troubleshooting
Troubleshooting Chart
Table 6. PF 0B91 Telephone: Level 1 and 2 Troubleshooting Chart
Symptom | Probable Cause | Verification And Remedy |
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1. Telephone will not turn on or stay on. | a) Battery either discharged or | Measure battery voltage across a 50 ohm (>1 |
| defective. | Watt) load. If the battery voltage is <3.25 Vdc, |
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| recharge the battery using the appropriate |
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| battery charger. If the battery will not recharge, |
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| replace the battery. If battery is not at fault, |
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| proceed to b. |
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| b) Battery terminals open or | Visually inspect the battery terminals on both |
| misaligned. | the battery and the telephone. Realign and, if |
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| necessary, either replace the battery or refer to |
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| a Level 3 Service Center for battery connector |
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| replacement. If battery terminals are not at fault, |
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| proceed to c. |
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| c) Transceiver board defective. | Remove the transceiver board assembly. |
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| Substitute a known good transceiver board and |
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| temporarily reassemble the unit. Press the PWR |
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| button; if unit turns on and stays on, disconnect |
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| the dc power source and reassemble the phone |
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| with the new transceiver board. Verify that the |
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| fault has been cleared. |
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2. Telephone exhibits poor reception or | a) Antenna defective | Check connection between the antenna and the |
erratic operation such as calls frequently |
| transceiver board. If the connection is OK, |
dropping or weak or distorted audio. |
| substitute a known good antenna. If the fault is |
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| still present, proceed to b. |
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| b) Transceiver board defective. | Replace the transceiver board (refer to 1c). |
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| Verify that the fault has been cleared and |
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| reassemble the unit with the new transceiver |
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| board. |
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3. Display is erratic, or provides partial or | a) Mating connections to or from | Check general condition of flex and flex |
no display. | transceiver board faulty. | connector. If the flex and connector are good, |
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| check that the display assembly mounting tabs |
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| are fully engaged. If connector is not at fault, |
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| proceed to b. |
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| b) Transceiver board defective. | Replace the transceiver board (refer to 1c). |
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| Verify that the fault has been cleared and |
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| reassemble the unit with the new transceiver |
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| board. |
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4. Incoming call alert transducer audio | Faulty transceiver board. | Replace the transceiver board (refer to 1c). |
distorted or volume is too low. |
| Verify that the fault has been cleared and |
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| reassemble the unit with the new transceiver |
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| board. |
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5. Telephone transmit audio is weak. | a) Microphone defective. | Replace the microphone as described in the |
(usually indicated by called parties |
| procedures. If fault is not cleared, proceed to b. |
complaining of difficulty in hearing voice). |
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| b) Transceiver board defective. | Replace the transceiver board (refer to 1c). |
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| Verify that the fault has been cleared and |
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| reassemble the unit with the new transceiver |
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| board. |
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6. Receive audio from earpiece speaker is | a) Connections to or from transceiver | Check connection from the earpiece to the |
weak or distorted. | board defective. | transceiver board. If connection is not at fault, |
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| proceed to b. |
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34 | October 4, 2004 | 6809490A73 |