Motorola V547, V551, V555, E550, V545 Service Manual

Consumer Solutions & Support
US Competency Center
600 North US Highway 45
Libertyville, Illinois	60048

Website: gs.mot.com

	FIELD SERVICE BULLETIN
FSB Number:	LVCCFSB2005-52
Author:	Tony Bryan
Date:	March 21, 2005
Total No. of Pages: 3
Subject:	GSM Intermittent Alert – Pogo-Pin Contact Force
Phone Models:	GSM V547, V551, V555, E550/V535, V545/V550, V300,
	V303, V400, V505, V500/V525
Level of Repair:	2

Problem

Service is aware of an issue, identified in the NPI Analysis of the GSM San2rini and Triplets Refresh products. Some units, returned with customer complaints of “Alert– Ringtone No” and other related complaints, were found to be caused by poor mechanical connection between the alert pogo-pins and the contacts of the polyphonic speaker. This failure mode is extremely intermittent and can be recovered and induced by flexing the rear housing in the area of the alert.

The root cause has been determined to be the lack of adequate spring force between the pogo pins and the alert contacts, at the actual measured working height of the pin. Pogo pin force vs. deflection measurements show that the tested units have at least 1 pin that has low contact force.

MOTOROLA INTERNAL USE ONLY

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