This manual is accurate and of high quality. It is only volume 2 of the service manual. This is schematic, parts lists, and exploded mechanical drawings. The theory of operation and the diss-assembly instructions are in volume 1. The unit can be tricky to dis-assemble portions of so the volume 1 manual can be important. The product description of the manual is accurate but it does not say anything about volume 1 and the image of the front page does clearly say Volume 2.
It has all the information you will need to fix it. The main circuit diagram is only A4 but being a PDF, you can print it to any size - I did it on two sheets of A3 and it didnt lose any detail - just made it readable when pinned up above the bench. I've found the fault, just need to buy some obscure bits to get it going again!
I cant fault the process, I paid for the manual in the morning and it was ready to download by lunch time.
Another excellent buy! File too clear and explanatory.
Text excerpt from page 30 (click to view)
Information and Communication Products
6.7.11 RLR (earphone-path faulty) Fault code: D 20 Affected unit: Components: Earphone Needed equipment: Multimeter Working material: none Diagnosis: The diaphragm of the earphone could be affected by deposits with increasing age. There will be a higher attenuation when measuring RLR (receiving loudness rating). In most cases the earphone is defective. If there is no noise audible on the earphone when making a sidetone check it�s also possible that the wire of the coil is cut off. Check the resistance of the coil with a multimeter. It must be about 150 ohms. If you measure a nearly infinitely high resistance, the wire may be cut off. Repair by component exchange: Use new earphone capsule. Test: Put the repaired board in a testhousing. Make a sidetone check by blowing into the microphone and checking the volume of the noise on the earphone. If there is a telephone tester with acoustic testhead make a RLR-test and check whether the attenuation is o.k.. Gigaset 3000 Classic/ Comfort