Motorola SI17 Service Manual

SOUTH ASIA FIELD QUALITY
GSM/DCS INFORMATION BULLETIN

Title: T720 Low Ringer Tone

Date: 25 November 2002

Number of Pages: 1

Bulletin Ref. No: S0026, rev. 0

Product: T720

System: DCS / GSM

Problem
Customer feedback low ringer tone and demand for increase of Ringer Tone loudness.
Solution

Pls note this modification is strictly for customer demand in improving Ringing Tone.

Service Action:

1. Make sure is not related to Midi speaker.

2. Increase midi speaker tone by piggy-backing another 15K resistor on top of existing R4405
( resistor 15K-p/n 0662057N03 ).

Please notify Ding(W13040) for any field return after the modification.

:

Piggy-backing another 15K resistor on top of existing R4405
(effective resistance is 7.5K) The Midi music “Toccata & Fugue”

change from 97 dB to 101dB.

MOTOROLA CONFIDENTIAL PROPRIETARY

Figure 1

1