Nokia 6110 Disassembly & Troubleshooting Instructions

Also see for 6110 - Navigator Smartphone 40 MB: Specification sheet User guide User guide User guide User guide

Nokia 6110 Disassembly & Troubleshooting Instructions Manual pdf 28 page image

PAMSTechnical DocumentationNSE–3Disassembly & Troubleshooting InstructionsPage 28 Original, 11/97Transmitter Fault (1)TransmitterFaultTXLEV 5N620 pin 8(J542)232 MHz SL: –28 dBmN620 pin 61 and 62,116 MHz SL: –40 dBmVHFLON620: TXQP, TXQN, TXIPand TXIN, OK ?Check TXQP, TXIP, TXQN, TXINlines from COBBA pin 13...16 andsoldered joints at N620 and N250,if OK change N250(Test pins J558& J560)N620 pin 63(J514), VTX–pulseOK ?Check VTX supply voltagefrom CCONTN620 pin 58, ~1.5V Check VREF_1 – lineN620 pin 59,loading 15 k ΩCheck R635 and solderedjointsN620 pin 61 and 62, ~0.8V Change N620N500 pin2(J552) and pin3(J550) 116 MHz SL: –32 dBmN500 pin 2 and 3,loading > 1M ΩCheck N500 pin 2 and3 for short circuits, ifOK change N500Check C652, C653, C655,L623, L624, R623, R625, if OKchange N500N500 pin 12(RX–Continous),SL: –28 dBmUHFLON500 pin 30,SL: –18 dBmN500 pin 1 and 29,~2.8VCheck VTX supply voltagefrom CCONTN500 pin 16,~1.5VCheck VREF_2 – line(J518)N500 pin 20,loading 10 k ΩCheck R504 and solderedjointsChange N500Transmitter1N620 pin 1,TXP–pulse OK? Check TXP–line from MADN620 pin 11, TXC–pulse OK? Check TXC–line from COBBATXQP, TXIP, TXIN, TXQN, TXP and VTX:Oscilloscope pictures in Appendix CYESYES YESYESYESYESYESYESYESYESYESYESYESYESYESNONONONONONONONONONONONONONONONO