Ericsson T28s-instr-serwis free download

File name T28s-instr-serwis.PDF

Trouble Shooting Guide, Standard Trouble Shooting Guide, Standard Applicable for T28s and T28sc Contents 1 Explanations ...2 2 Network Problems...5 3 On/Off Problems ...10 4 Audio Problems ...13 5 Display/illumination problems...17 6 Capacity/Charging Problems...21 7 SIM Problems...22 8 Key/Flip Problems...23 9 Alert Problems...25 10 Data Communication Problems...27 11 Software Problems ...27 12 Other Problems ...28 13 Revision History ...29 4/00021-2/FEA 209 544/19 E Approved according to 1776-2/FEA 209 544 Trouble Shooting Guide, Standard 1 Explanations For component placing see doc.1078-2/FEA 209 544/19. Repeated Tests: When the front has been removed most of the tests can be performed without the front mounted. 1.1 Abbreviations B: Crystal. C: Capacitor. D: Digital circuit. F: Over voltage protection. H: Buzzer, LED and pads for display. J: Connector. L: Coil. N: Analogue circuit, power amplifier at some phones. R: Resistor. S: Keyboard pads.