Ericsson R310 1 free download

File name ERICSSON R310 1.PDF

Trouble Shooting Guide, Standard Trouble Shooting Guide, Standard Applicable for R310s and R310sc Contents 1 Explanations ...2 2 Network Problems...4 3 On/Off Problems ...8 4 Audio Problems ...11 5 Display/Illumination Problems ...14 6 Capacity/Charging Problems...17 7 SIM Problems...18 8 Key Problems...19 9 Alert Problems...20 10 Other Problems ...22 11 Revision History ...23 4/00021-2/FEA 209 544/31 B Approved according to 1776-2/FEA 209 544 Trouble Shooting Guide, Standard 1 Explanations For component placing see doc.1078-2/FEA 209 544/31. 1.1 Abbreviations B: Crystal. C: Capacitor. D: Digital circuit. F: Over voltage protection. H: Buzzer, LED, pads for display. J: Connector. L: Coil. N: Analogue circuit. R: Resistor. S: Keyboard pads. U: BALUN Component that converts a balanced signal to unbalanced or the other way around. V: Transistor, diode. X: Contact surface on the circuit board. Z: Filter. DCIO: DC voltage through the system connector for charging. GND: Ground. LED3K: Signal that acti