Nokia NKC-1X Series Troubleshooting Instructions page 3

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Table of Contents

NKC-1X

CCS Technical Documentation

Troubleshooting Instructions

List of Figures

Page No

Fig 1 Power up sequence .....................................................................................................7

Fig 2 Fault tree, phone does not power up...........................................................................9

Fig 3 Fault tree, charging .....................................................................................................13

Fig 4 Fault tree, earpiece fail ...............................................................................................14

Fig 5 Fault tree, microphone fail .........................................................................................15

Fig 6 Fault tree, accessory detection....................................................................................16

Fig 7 Fault tree, sleep clock .................................................................................................17

Fig 8 Fault tree, Display/Keyboard lights............................................................................18

Fig 9 Fault tree, Display does not work...............................................................................19

Fig 10 Fault tree. AMPS ......................................................................................................22

Fig 11 Fault tree. Transmitter troubleshooting ....................................................................26

Fig 12 Fault tree: Power control loop ..................................................................................28

Fig 13 Detected voltage levels.............................................................................................29

Fig 14 Fault tree: 19.44 MHz oscillator...............................................................................30

Fig 15 Fault tree: RX VHF VCO.........................................................................................31

Fig 16 Fault tree: TX VHF VCO .........................................................................................32

Fig 17 Fault tree: UHF Synthesizer .....................................................................................33

Nokia Corporation

Issue 1 02/03

Page 3

Table of Contents

Troubleshooting