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
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.
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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.
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Consumer Solutions & Support US Competency Center 600 North US Highway 45 Libertyville, Illinois 60048
Website: gs.mot.com
Field Service Action
Customer Returns:
When servicing GSM V220 customer returns, with various customer complaints including “Turn On/Off – No Turn On” and “Display Main – No Display”, where the failure is suspected to be caused by poor connection between the flex cable and the PCBA at the J932 40-pin connector, then:
1. Disassemble the housing and re-seat the flex cable into the J932 board connector to determine if the failure is related to this issue.
a. If the failure is not related to this issue, then follow normal
troubleshooting and repair techniques to repair the defect per the customer complaint.
2. Inspect the positioning of the flex cable, under magnification, to ensure that is not contacting the edge of the base front housing. See Fig. 1.0 above.
3. If the flex cable is contacting the edge of base front housing, then replace the flex cable to resolve this issue.
Call Center Action:
When responding to customer inquires on the GSM V220 product, with various customer complaints including “Turn On/Off – No Turn On” and “Display Main – No Display”, please direct the customer to have their phone serviced per this FSB.
Service Entry Code
Please ensure that repairs of this type are logged on the Service Link database as follows:
Global M-Claims Codes:
Customer Complaint Code:
DIM01 (Display Main – No Display) TON01 (Turn On/Off – Can’t switch phone on)
Problem Found Code:
DIM01 (Display Main – No Display) TON01 (Turn On/Off – Can’t switch phone on)
Reference Designator Code: J (Connector) Repair Code:
RAS04 (Reassemble - CSB/FSB) RMP10 (Replace Mechanical Part - CSB/FSB)
PRC E-Service Codes:
Problem Found Code:
3001 (Display Main – No Display) 2001 (Turn On/Off – Can’t switch phone on)
Repair Code:
1604 (Reassemble - CSB/FSB) 1310 (Replace Mechanical Part - CSB/FSB)
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