Polycom IP 32x, IP 33x manual Displays, Contrast on

		Troubleshooting Your SoundPoint IP 32x/33x Phone
Displays
Symptom	Problem	Corrective Action
There is no display.	Power is not correctly applied to	Do one of the following:
The display is incorrect.	the SoundPoint IP 32x/33x	• Check that the screen is illuminated.
	phone.
The display has bad contrast.		• Make sure the LAN cable is inserted
		properly at the back of the phone (try
		unplugging and re-inserting the
		cable).
		• If using Power over Ethernet (PoE),
		have your system administrator check
		that the switch is supplying power to
		the phone.
	The contrast needs adjustment.	Do one of the following:
		• Refer to Changing the Display
		Contrast on page 2-3.
		• To obtain a default level of contrast,
		restart the phone. (Refer to * on page
		*).
	Outbound or inbound calling is	Do one of the following:
	unsuccessful.	• Place a call to the phone under
		investigation. Check that the screen
		indicates incoming call information.
		• Lift the handset. Ensure the dial tone
		is present and place a call to another
		extension or number. Check that the
		screen changes in response.
The display flickers.	A certain type of older	Do one of the following:
	fluorescent lighting causes the	• Move the SoundPoint IP 32x/33x SIP
	display to appear to flicker.
		phone away from the lights.
		• Replace the lights.

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