Motorola service manual Troubleshooting Chart, Troubleshooting E1000

Troubleshooting E1000

Troubleshooting

Troubleshooting Chart

Table 6. PF 0B91 Telephone: Level 1 and 2 Troubleshooting Chart

Symptom	Probable Cause	Verification And Remedy
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,
		recharge the battery using the appropriate
		battery charger. If the battery will not recharge,
		replace the battery. If battery is not at fault,
		proceed to b.
	b) Battery terminals open or	Visually inspect the battery terminals on both
	misaligned.	the battery and the telephone. Realign and, if
		necessary, either replace the battery or refer to
		a Level 3 Service Center for battery connector
		replacement. If battery terminals are not at fault,
		proceed to c.
	c) Transceiver board defective.	Remove the transceiver board assembly.
		Substitute a known good transceiver board and
		temporarily reassemble the unit. Press the PWR
		button; if unit turns on and stays on, disconnect
		the dc power source and reassemble the phone
		with the new transceiver board. Verify that the
		fault has been cleared.
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
		still present, proceed to b.
	b) Transceiver board defective.	Replace the transceiver board (refer to 1c).
		Verify that the fault has been cleared and
		reassemble the unit with the new transceiver
		board.
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,
		check that the display assembly mounting tabs
		are fully engaged. If connector is not at fault,
		proceed to b.
	b) Transceiver board defective.	Replace the transceiver board (refer to 1c).
		Verify that the fault has been cleared and
		reassemble the unit with the new transceiver
		board.
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
		reassemble the unit with the new transceiver
		board.
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).
	b) Transceiver board defective.	Replace the transceiver board (refer to 1c).
		Verify that the fault has been cleared and
		reassemble the unit with the new transceiver
		board.
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,
		proceed to b.

34 October 4, 2004 6809490A73