Motorola SI22 Service Manual

M

Middle East & North Africa

Personal Communication Sector

GSM V300 Flip Assembly (C56-CLI Chassis Short)

Field Service Information

Our Reference: SI16_3_2004

Date: March 3, 2003

Pages (including this page): 4

Prepared by:

Mohamed Morsy
Customer Services Manager,
Middle East & North Africa

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Classification:
Motorola Internal Information
Strictly released for Motorola Authorized Service Center Use only.

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Middle East & North Africa

Date: March 3, 2003

Our Reference: SI16_3_2004

Product/System:

Subject:

Problem:

Service is aware of an issue identified during the 1st 200 NPI Analysis on V300. Some units, returned with a
customer complaint of “Can’t Switch Phone On”, “No Display Backlights”, or “Will not Charge Battery, were
found to draw excessive current (1.25mA) when plugged into an external power supply. Analysis revealed a
short, internal to the Flip Assembly, on the B+ Line to be the cause. The short occurs as a result of the CLI
Chassis (0788807N01) design not allowing the proper amount of clearance for C56, a filter cap on the B+
Line. After assembly, torque on the Flip Assembly causes the CLI Snubber to be pierced by C56, which
allows the capacitor to short to the CLI Chassis (0788807N01). This results in the radio drawing 1.25 amps,
as well as shorting out the backlights for both the Main and CLI Displays. See Figure 1.0 below.

V300

GSM V300 Flip Assembly (C56-CLI Chassis Short)

FIELD SERVICE INFORMATION

Damaged CLI Snubber at
the point of the short C56

Figure 1.0 - CLI Snubber damaged by C56

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Classification:
Motorola Internal Information
Strictly released for Motorola Authorized Service Center Use only.

Solution:

SHORT-TERM:

This issue was identified by the factories during initial production builds of V300. A rework procedure was
developed and released, as of October 3
production flip assemblies. See detailed rework instructions below in Figure 2.0.

Kapton Tape Rework Procedure

Kapton Tape (1190142N01) Dimensions: 13.0mm x 8.5mm, 0.08mm thick

rd

2003, to the suppliers to be implemented in 100% of all

Kapton Tape (1190142N01)
must completely cover
capacitor.

13.0mm

Figure 2.0 - Rework Procedure

LONG-TERM:

Redesign of CLI Chassis (0788807N01) Rev. E to allow additional clearance for C56. See Figure 3.0 below.
Tooling for Rev. E chassis is in place at the suppliers and pilot builds have been completed of the Rev. E
chassis as of 11/14/03. Production is scheduled to cut over to the Rev. E Chassis by the 1
January.

Current Rev. D Chassis NEW Rev. E Chassis

8.5mm

st

week in

Classification:
Motorola Internal Information
Strictly released for Motorola Authorized Service Center Use only.

Capacitor interferes with

p

chassis.

Additional clearance for
ca

acitor added to chassis.

Figure 3.0 - Redesign of CLI Chassis

Field Service Action:

Customer Returns:
SHORT-TERM:

When servicing GSM V300 customer returns with a customer complaint of “Can’t Switch Phone On”, “No
Display Backlights”, or “Will not Charge Battery”, then:

1. Power up the phone using an external power supply and verify the following symptoms: Unit
Powers up and you hear wake-up tones but there is no backlights on the Main and CLI Displays.
Unit draws approx. 1.25A from the supply.

a. If the unit displays these symptoms, then disassemble the unit and flip assembly and

perform the Kapton Tape Rework Procedure shown in Figure 2.0 above.

b. If the unit does not display these symptoms, then proceed with normal troubleshooting

techniques as per the customer complaint.

NOTE: All GSM V300 customer returns, that require the flip assembly to be disassembled, should
be visually inspected to confirm proper placement of the Kapton Tape over C56 or the Rev. E CLI
Chassis prior to being re-assembled.

Service Inventory:

SHORT-TERM:

Stock Inventory of the Pre-Cut Kapton Tape (1190142N01) for Rework

LONG-TERM:

Stock Inventory of the improved design CLI Chassis (0788807N01-Rev.E), when available, for field
replacement

Service Entry Codes:

Please ensure that repairs of this type are logged on the Service database as follows:

Global M-Claims Codes:

Customer Complaint Codes:

CHG01 (Charging-Does Not Charge)
DIM08 (Display Main-No Backlight)
DIS07 (Display Secondary-No Backlight)
TON01 (Can’t Switch Phone On)

Problem Found Code: DIM08 (Display Main-No Backlight)
REF Designator Code: FLIP (Flip)
Repair Code: RAS04 (Reassemble CSB/FSB)

EPPRS Codes:

Customer Fault Code: 42 (Faulty Display-Missing Backlights)
Repair Code: 24 (Flip Module-Electrically Faulty)

Classification:
Motorola Internal Information
Strictly released for Motorola Authorized Service Center Use only.

Classification:
Motorola Internal Information
Strictly released for Motorola Authorized Service Center Use only.