Maxon Telecom SP200, SP210 service manual Troubleshooting, Diagnostic Function, Diagnostics

Page 39

SP200/210

Maxon SP200/210 Radio

6 TROUBLESHOOTING

This section includes voltage and troubleshooting charts which should assist the engineer to isolate and repair the fault. Voltage measurements should be made using a high-impedance voltmeter and the values given are with respect to ground.

Obvious checks, such as battery performance on load, should be made before pulling the radio apart. Substitution of another set of batteries, or the use of a power supply, isolates this cause.

The alignment procedures, given in Section 5, list how standard tests such as SINAD measurements can be made. These can be used to check the performance of the receiver.

Careful alignment, using suitable test equipment, and quality interface cables should ensure that the radios meet their specified performance.

6.1 Diagnostic Function

The diagnostic function is designed to inform the user about the operational status of the radio. The possible audible and visual warnings are:

Status

Description

LED Colour

LCD Indication

Audible Tone

Normal

Power On Ready

N/A

188

Melody

 

Busy

Yellow

Channel Number

N/A

 

Correct S.A. Tone

Green

 

N/A

 

Transmit

Red

 

N/A

 

Transmit Not Allowed

Red Flashing

Alternating UL

Repeating Dual Tone

 

 

 

with Channel No.

 

Scanning

Scan

Flashing Green

 

N/A

 

Priority Scan Mode

Green Flashing

N/A

N/A

 

Priority Lookback

Green Flashing

Lb/Channel

N/A

 

 

 

Number

 

Priority

Edit Priority Channel

Two Red

PE

N/A

Edit

 

Flashes

 

 

Scan Edit

Edit Scan List

Single Red

SE

N/A

 

 

Flash

 

 

Warning

Time-Out Timer

N/A

Pt

Single Tone/Triple

 

 

 

 

Tone Repeated

 

Busy Lock

Flashing Yellow

bL

Repeating Single Tone

 

Tx Inhibit

N/A

_h/r0

Two Beeps

 

Battery Low

Flashing Red

LC

Repeating Triple Tone

Error

EEprom

N/A

Er

Repeating Single Tone

 

PLL Error

N/A

UL

Repeating Dual Tone

Table 6-1 – Diagnostics

Note: All audible tones can be programmed OFF for silent operation.

Issue 1.0

TROUBLESHOOTING

03/01

Page 6-1

Page 38 Page 40
Image 39
Page 38 Page 40
Contents SP200/210 NSW Australia Tel +61 0 2 9707 Issue No Effective Date Reason for Change Signature Amendment Record SheetAmendment Record Sheet Maxon SP200/210 Radio Table of Contents 11-1 SL100 UHF Parts List11.4 Default Settings 11-8 10-1List of Tables Maxon SP200/210 Radio Issue 03/01 Category C Engineering Bulletin Using this ManualIntroduction Amendments to this ManualContact Information General SpecificationsESD EMC Environmental Operating Temperature RangePhysical Dimensions Synthesiser VibrationAccessories & Options Pre-Install Check AccessoriesOptions Accessories & Options Connections INSTALLATION, Commissioning & AlignmentInstallation INSTALLATION, Commissioning & AlignmentRecommended Test Equipment CommissioningCommissioning Kit Commissioning EquipmentDiscrete Test Equipment Test Equipment Set-up using Discrete Test EquipmentSK 3100 Service Kit Test Equipment Connection Transmitter Performance TestsReceiver Performance Tests Power Adjustment SquelchAudio Output VHF Tests without DisassemblyAlignment PreparationDisassembly and Re-assembly of the Radio Removing and Replacing BatteryRemoving and Replacing the Belt Clip Removing and Replacing the Main Assembly Location of Adjustment PointsPLL Alignment Squelch Sensitivity Transmitter AlignmentTcxo Radiocommunications Test SET Balance Adjustment Audio deviation adjustmentCtcss / DCS deviation Audio Volume Level At maximum volume, nominal distortion is 10%Receiver Alignment Eeprom Detailed Functional DescriptionIntroduction Common CircuitsAudio Asic Audio Signal PathMiscellaneous Signals and Controller Sat Signal PathAudio/SAT Circuits PLL Synthesiser Battery Low Indicator CircuitLEDs and indicators Common RF CircuitsDC to DC Converter PLL ICOut-of-Lock Detector Charge Pump and Loop FilterPA module Antenna SwitchAutomatic power control APC circuits TransmitterFront End Receiver16kHz Band Pass Filter First MixerSecond mixer, Second IF, FM detector Squelch Mute CircuitNoise detector circuit AF Output Low Pass FilterSpeaker Audio Amplifier Troubleshooting TroubleshootingDiagnostic Function DiagnosticsIf IC Troubleshooting ChartVoltage Charts Transistors Main CircuitMain Circuit Transistor Voltages Integrated Circuits Integrated Circuit Voltages ReceiveIntegrated Circuit Voltages Transmit Troubleshooting Troubleshooting Troubleshooting Troubleshooting Getting Started ProgrammingSMP6100 IntroductionProgram Radio Select Features MenuScanning Program/Print/SaveSave Data to Disk Print DataMaxon SP200/200 Radio SP200/210 Spare Parts Exploded Mechanical Drawings & Parts ListsParts List Exploded Mechanical Drawings & Parts ListsSL100V2 SL100U2For details on servicing, please refer to Section Mechanical PartsLCD TTR 1866 Dpfdpw Parts List for Exploded Mechanical DrawingNUT M7 Bsbm PCB LCDSKPT-110VA SML-020MLTT86 SMDPCB VCO PCB RF Bsbm M2.6 AldcSL100 VHF Parts List V2 Control Circuit05B-000-5Z Chip Ceramic 0.0022UF GRM39 X7R222J 50V P Diode Switching KDS181S A3Chip Ceramic 0.001UF GRM39 X7R102K 50V P Chip Ceramic 0.012UF GRM39 X7R123K 25V PSW Tact SKPT-1101VA 2 V2 RFElect Capacitor 10UF 16V 20% RES.CHIP Trimmer 1K RH03E1C13XRES.CHIP Trimmer 10K RH03E1C14X Thermistor Chip 33KNTCCS32163SH333KC TH1Chip Ceramic 47PF GRM39 COG470J 50V P RE Power Module GNOK-M68776-E01 IC9Chip Ceramic 39PF GRM40 COG390J 50V P Chip Ceramic 43PF GRM40 COG430J 50V PTcxo Assembly 5 V2 Front End 4 V2 VCOU2 Control Circuit SL100 UHF Parts ListConnector Waffer Chip Resistor 39K 2 U2 RFChip Resistor 12K Chip Resistor 18KChip Ceramic RES.CHIP Trimmer K RH03E1C13XChip Ceramic 0.0015UF GRM39 X7R152K 50V P Chip Ceramic 10PF GRM40 COG100C 50V PChip Ceramic 4.7PF GRM40 COG4R7C 50V P Power Mpduleuhf M68732HGNOK IC9Chip Ceramic 2.2PF GRM40 COG2R2C 50V P Chip Ceramic 470PF GRM40 COG471J 50V PCoil Spring 2X0.75X3TL SMD TcxoCoil Chip 18NHLL2012-F18NM Coil Spring X0.35X7TR4 VCO Maxon SP200/210 Radio Tcxo Circuit Diagrams & PCB LayoutsCircuit Diagrams & PCB Layouts RF PCBCircuit Diagrams & PCB Layouts Digital Board Layout Top Side Digital Board Layout Bottom Side RF Board Layout Top Side Issue RF Board Layout Bottom Side P406787a Front End Front-End Board Layout Tcxo Board Layout Spare Parts & Maintenance Policy 10SPARE Parts10.1Spare Parts Surface mount removal Component ReplacementSurface mount component replacement Surface mount componentsSurface mounted integrated circuit replacement Spare Parts & Maintenance Policy 11.3Calibration Program 11APPENDIX ACC-2003 Alignment BOX11.1Purpose 11.2Test EquipmentAppendix a ACC-2003 Alignment BOX Calibration Program Primary ScreenAsic Control Screen Rx Adjustment of Asic values TXTRIM2TXTRIM3 RX VOL Transmit Adjustments SAT BalanceSAT Deviation Audio Output Level Receive AdjustmentsV1 Default Asic Settings 11.4Default Settings11.4.1 V1 Band Default Settings V1 Default Frequency Table11.4.2 V2 Band Default Settings V2 Default Frequency TableV2 Default Asic Settings 11.4.3 U1 Band Default Settings U1 Default Frequency TableU1 Default Asic Settings 11.4.4 U2 Band Default Settings U2 Default Frequency TableU2 Default Asic Settings
Top Page Image Contents