Siemens ST55 User manual

Local Service Organization Service Manual
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SIEMENS COMMUNICATIONS UNLIMITED
Version Date Department Notes to change
V1.00 01.08.2003 ICM MP CCQ SLI RHQ First release
Our innovation shapes the future

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ST55 Level 2 Service Manual
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Table of Contents
1GPRS (GERENAL PACKET RADIO SERVICE)....................................................2
2K-JAVA APPLICATION...........................................................................................3
3KEY FEATURES………………………………………………………………………4
4ACCESSORIES ………………………………..……………………….……………..6
5UNIT DESCRIPTION ST55 ……...…...………………………………………………7
5.1 Exploded View of ST55 …….…………………………………………………….………..........8
6DISASSEMBLY OF ST55.....…………………………………………………………9
7REASSEMBLY OF SL55…………………………………………………………….12
8MOBILE SOFTWARE PROGRAMMING…………………………………………..14
8.1 Customer Mode (*#369#)………………………………………………………………….…...16
8.2 SW Version Definitions…….………………………………………….…………………….….16
9SIEMENS SERVICE EQUIPMENT USER MANUAL……………………………..17
10 INTERNATIONAL MOBILE EQUIPMENT IDENTITY, IMEI..…………………….18
11 GENERAL TESTING INFORMATION………………………….…………………..19
Annex 1………………………………………………………………………………..24
Annex 2………………………………………………………………………………..25

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1GPRS (GENERAL PACKET RADIO SERVICE)
GPRS is a new non-voice value added services that allows information to be sent and received
across a GSM mobile telephone network. It supplements today’s Circuit Switched Data (CSD)
and Short Message Services (SMS). GPRS involves overlaying a packet based air interface on
the existing circuit switched GSM network. This gives the option to use a packet-based data
service. The information is split into separated but related “packets” before being transmitted and
reassembled at the receiving end. Theoretically, maximum speeds of up to 171.2 kilobits per
second (kbps) are achievable with GPRS using all eight timeslots at the same time. This is about
3times as fast as the data transmission speed possible over today’s fixed telecommunications
networks and 10 times as fast as current Circuit Switched Data services on GSM networks.
Figure1. Example of GPRS data transmission
Example:Cell with 1 Frequency channel:
1physical channel for signaling, 4 physical channels for Circuit switched and 3 physical channels
for Packet switched.

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2K-JAVA APPLICATION
Java-based
game system
Java Application
Manager (JAM)
Application launcher and download
manager.
Supports HTTP-based OTA download of
applications over GPRS and CSD.
yes
RAM for Java
applications
Available RAM for Java applications (ie.
program code and data) during application
runtime:
Minimum: 100 Kbyte (Has to be taken as
working assumption for application
development.)
Goal: 145 Kbyte as SL45i (not committed)
yes
MIDP 1.0, CLDC 1.0 As SL45i, including performance
optimizations from SL45i-Infusio.
yes
'OEM extensions' Proprietary API extensions as SL45i.
Including 'Siemens Game API'
yes
HTTP API over GPRS SL45i: only over CSD yes

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3Key Features
Frequency Bands •EGSM 900/GSM 1800/GSM 1900
Power •EGSM 900 : Power Class 4
•GSM 1800 : Power Class 1
•GSM 1900 : Power Class 1
Battery •Li-ion Battery Pack
•Nominal Voltage : 3.7V
•Nominal Capacity : 780mAh
Stand-by Time •Min 140 hrs (actual time depends on the network)
Talk Time •Best case : min 3.8 hours (DTX off, GSM 900, PL19)
•Best case : min 4.5 hours (DTX on 40% GSM 900,Pl19)
(Actual time depends on the network)
Charging Max charge time for empty battery (0-5% capacity) is 2.5 hrs for
standard charger and via battery charging station.
SIM Card •Plug In card 3V
•SIM application Tool Kit
Class II and III Send USSD command
Message SMS, EMS, MMS Support
Display •Backlight LED – LCD : White
Keypad: Blue
•LCD: 1.89” TFD module
120 x 160 pixel
16 bit (65536) colours
Camera Sensor •Focus Range: 50 cm ~ 
•Preview Mode: SUBQCIF 128 x 98

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•Still pictures, tree qualities: High, Normal, Low
•Resolution – VGA (640 x 480), QVGA (320 x 240), QQVGA (160 x
120)
Physical Details •Dimension: 98.5 mm (L) x 48.86 mm (W) x 21.6 mm (H)
•Volume: ~ 75 cc
•Weight: ~ 87 g
Keypad •5-Way joystick
•2function keys (Send, Power / End)
•2multifunctional softkeys
•12 numeric keys (10 numeric,*, #)
Temperature
Range
•-10 oCto +55 oCfor normal operating
•-40 oCto +85 oCfor storage
Audio •Ringer: On / Off / Beep
•Melody: 20 embedded + 10 download + 3 compose
•Melody Type: YAMAHA SMAF MA3
•Key Tones: Click / Tone / Silent
•Info Tones: On/ Off / Extended
•Speaker Volume: Adjustable in 4 levels during call via volume key
Setting •User Profiles: Normal / Quiet / Noisy / Headset / Aeroplane mode / 2
Empty
•Group : Friends / Colleague / Family / Biz Partner / VIP
•Wallpaper: 3 default + 2 customized + OFF
•Answer Mode: Any key / Key Tones / Flap
•Security: Codes / Only > FDN > (Operator support) / This SIM only
Speech Codec •AMR, FR, EFR, HR
Interface •Bluetooth, USB, R232, IrDa, SyncML

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4Accessories
For the ST55, the following accessories will be available.
Battery, Li-Ion (3.7V, 750mAh) Standard Charger
Download Cable

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5Unit Description ST55
The mechanical concept of the ST55 as a bar phone type is much similar with other Siemens
series mobile phones.
ST55 can be divided into three main physical blocks, the top cover, middle frame and base cover.
The top cover is composed of internal and external LCD protected by LCD base and lens with
shielding effect. The LCD Lens will joint receiver and top cover.
For the main function assy., there are 2 screws located on the base and 2 on the M/B.
Screwdriver (T5) and tweezers will be used as main tools to perform mechanical repair.
Inside, the middle frame consist a M/B, which carries control and RF section of the mobile, and a
key PCB and microphone directly insert into plug-in connectors to show function. The display
module and vibrator are connected to the board by the board to board connector which is
inserted into a plug-in connector. In case they are defective electrically or mechanically it can be
exchanged very quickly. Camera module and antenna is attached on antenna frame which is
inserted on middle frame. The I/O connector for software upgrading and charging is located on
the bottom of middle frame.
The connector for external RF cable is located at the base cover of the mobile. Battery is
attached on the base cover and fix position with battery knob.
Notice: The ST55 is a dual-band mobile operating on GSM900 and GSM1800.

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5.1 Exploded View of ST55

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6Disassembly of ST55
Note: ESD concept; the internal circuits will be more susceptible to ESD because of the use of exchangeable
housing. The construction of the internal block must be/is designed, in the best possible way, to protect the circuit
against sparks.
Attention: Do not touch the screen of the display module when the upper case is removed! The module is damaged
after finger contact! Use a protection foil during disassembly and do not forget to remove this foil during reassembly.
The keypad must be completely closed to prevent any occurrence of an ESD disruptive discharge.
The SIM contacts may be open, thus reachable for ESD contact discharge. This could lead to damage or destruction of
the IC pins.
It is a requirement for the service personnel to observe ESD protection rules while performing servicing the ST55.
For assembly a torque T5 screw driver adjusted to 7Ncm is required.
Step 1
Remove BATTERY, CARKIT RUBBER and 2 SCREWS
(M1.6*6.5) located on BASE CASE ASSY.
Step 2
Detach the TOP CASE ASSY. by sliding the upper gap
from bottom to both sides.
Step 3
Remove the KEYSET from TOP CASE ASSY.
Step 4
Add a protect membrane on LCD. Remove 2 SCREWS
(M1.6*6.5) on top.