Motorola V220 Service Manual
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Consumer Solutions & Support
US Competency Center
600 North US Highway 45
Libertyville, Illinois 60048
Website: gs.mot.com
FIELD SERVICE BULLETIN
FSB Number: LVCCFSB2005-44
Author: Tony Bryan
Date: February 23, 2005
Total No. of Pages: 3
Subject: GSM V220 – 40-Pin Board to Board Connector
Phone Models: GSM V220
Level of Repair: 2
Problem
Service is aware of an issue, identified in factory testing and highlighted by the
field, on the GSM V220. Some units, returned with various customer complaints
including “Turn On/Off – No Turn On” and “Display Main – No Display”, were
found to be caused by poor connection between the flex cable and the PCBA at
the J932 40-pin connector. In some instances it was found that the flex cable is
making contact with the edge of the base front housing. See Fig. 1.0 below. This
prevents the connector from being fully seated and will result in intermittent
failure after drop.
Fig. 1.0 – Flex Cable is touching edge of F-Hsg
The root cause of the issue has been determined to be a connector shift, due to
surface pulling tension, during pick & place – SMT process. If connector is shifted
in the wrong direction edge of flex can contact housing. See Fig. 2.0 below.
MOTOROLA INTERNAL USE ONLY Page 1
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Consumer Solutions & Support
US Competency Center
600 North US Highway 45
Libertyville, Illinois 60048
Website: gs.mot.com
V220 Housing
0.2m
Connecto
Flex with FR4
Fig. 2.0 – Flex to Housing Positioning
Solution
AMK Factory worked with flex suppliers to shift the connector down by 0.20mm
from 0.45 center to 0.25mm from the pad. – 10/1/2004
Flex suppliers to place a black dot beside the 40-pin connector to identify flexes
made after the change. See Fig. 3.0 below.
Placing a dot beside
connector
Fig. 3.0 – Supplier Markings Added
40-pin
Factory implemented a 100% drop test, 5 x Drop, in production to screen out
potential failures – 2/16/2005
SDC is currently investigating additional long-term solutions to eliminate this
intermittent failure mode associated with the single-latch connector design used
on V220.
MOTOROLA INTERNAL USE ONLY Page 2
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