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Quality scan of the original. All the detail necessary to troubleshoot, repair and adjust the unit. I'm sure I will be downloading more manuals in the future as the need arises.
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Exactly as described, a Service Manual complete with the schematics and PCB layout delivered in a timely manner. Many thanks for the great service.
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some of the writing is a bit blur but the part in the schmatic was great and i have fixed the machine thanks
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Well.. I'd searched for this manual and although I found many copies online I was pleased to find your website with a well balanced pricing system and easy to search and follow links. That together with the very quick response time was just what I was looking for.. being a very impatient tech.. ;-) I had the service manual in front of me within a short time.
Bookmarked.. and you can bet I will always come here first for my service & user manuals..
best regards
Ed(Tony) Foley
G7WHK
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I will definitely be back for more information when I need it.
Company Confidential
Copyright 2005© Siemens AG
s Com
8 Acoustic
The speaker module is designed to provide good performance for mobile handsfree and
sound ringer. The speaker module is a system which has a closed front volume with soundoutlets towards the ear of the user. The speaker is partly hidden behind the display to save length of the phone. The back volume of speaker module is using the unused air between the antenna and the PCB. The speaker module is connected to the SAR-frame and contacted via two bending springs to the PCB. For avoiding any interference between antenna and earpiece, there is an antenna reference plate soldered behind the speaker at the PCB. In ringer mode acoustic shock is avoided by using ramping of the ringer level. The microphone is built in the Mounting Frame Lower Part and is mechanically fixed with a rubber seal (gasket). The contact on the PCB is realised via spiral springs, which are integrated in the gasket. Because of usage of Unidirectional Microphone, the gasket has a front- and a back sound-inlet hole. The front sound-inlet is acoustically tighten connected with a sound-inlet at the rear-side of the mounting frame lower part. The back sound-inlet is acoustically tighten connected with a sound-inlet at the bottom-side of the mounting frame lower part. The gasket of the microphone has a asymmetrical shape in order to provide nonrotating, guaranteed covering of the sound-inlets of mounting frame lower part to the corresponding sound-inlets at microphone gasket. The buzzer and the keypad clicks will be realized over the earpiece. The standard sounds will be generated by the EGOLDlite, the advanced sounds will be generated via firmware running on the DSP.
9 Power Supply, Battery and Charging
All the important functions for the power supply of the phone are carried out by the power supply ASIC. The POWER-pin of the I/O-Connector is for charging the battery with an external power supply.
Page 34 of 53 TD_Repair_L2.5_A70_A75_R1.0.pdf Release 1.0
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