Troubleshooting, Diagnostic Function | Maxon Telecom SP200, SP210

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

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

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 10-1 List of Tables Maxon SP200/210 Radio Issue 03/01 Category C Engineering Bulletin Using this ManualIntroduction Amendments to this Manual Contact Information General Specifications ESD EMC Environmental Operating Temperature RangePhysical Dimensions Synthesiser Vibration Accessories & Options Pre-Install Check AccessoriesOptions Accessories & Options Connections INSTALLATION, Commissioning & AlignmentInstallation INSTALLATION, Commissioning & Alignment Recommended Test Equipment Commissioning Commissioning Kit Commissioning Equipment Discrete Test Equipment Test Equipment Set-up using Discrete Test Equipment SK 3100 Service Kit Test Equipment Connection Transmitter Performance TestsReceiver Performance Tests Power Adjustment SquelchAudio Output VHF Tests without DisassemblyAlignment Preparation Disassembly 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 Circuits Audio Asic Audio Signal Path Miscellaneous Signals and Controller Sat Signal Path Audio/SAT Circuits PLL Synthesiser Battery Low Indicator CircuitLEDs and indicators Common RF Circuits DC to DC Converter PLL ICOut-of-Lock Detector Charge Pump and Loop Filter PA module Antenna SwitchAutomatic power control APC circuits Transmitter Front End Receiver 16kHz Band Pass Filter First MixerSecond mixer, Second IF, FM detector Squelch Mute Circuit Noise detector circuit AF Output Low Pass FilterSpeaker Audio Amplifier Troubleshooting TroubleshootingDiagnostic Function Diagnostics If IC Troubleshooting Chart Voltage Charts Transistors Main CircuitMain Circuit Transistor Voltages Integrated Circuits Integrated Circuit Voltages ReceiveIntegrated Circuit Voltages Transmit Troubleshooting Troubleshooting Troubleshooting Troubleshooting Getting Started ProgrammingSMP6100 Introduction Program Radio Select Features MenuScanning Program/Print/Save Save Data to Disk Print Data Maxon SP200/200 Radio SP200/210 Spare Parts Exploded Mechanical Drawings & Parts ListsParts List Exploded Mechanical Drawings & Parts Lists SL100V2 SL100U2 For details on servicing, please refer to Section Mechanical Parts LCD TTR 1866 Dpfdpw Parts List for Exploded Mechanical Drawing NUT M7 Bsbm PCB LCDSKPT-110VA SML-020MLTT86 SMD PCB VCO PCB RF Bsbm M2.6 Aldc SL100 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 P SW Tact SKPT-1101VA 2 V2 RF Elect Capacitor 10UF 16V 20% RES.CHIP Trimmer 1K RH03E1C13XRES.CHIP Trimmer 10K RH03E1C14X Thermistor Chip 33KNTCCS32163SH333KC TH1 Chip 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 P Tcxo Assembly 5 V2 Front End 4 V2 VCO U2 Control Circuit SL100 UHF Parts List Connector Waffer Chip Resistor 39K 2 U2 RFChip Resistor 12K Chip Resistor 18K Chip Ceramic RES.CHIP Trimmer K RH03E1C13XChip Ceramic 0.0015UF GRM39 X7R152K 50V P Chip Ceramic 10PF GRM40 COG100C 50V P Chip Ceramic 4.7PF GRM40 COG4R7C 50V P Power Mpduleuhf M68732HGNOK IC9Chip Ceramic 2.2PF GRM40 COG2R2C 50V P Chip Ceramic 470PF GRM40 COG471J 50V P Coil Spring 2X0.75X3TL SMD TcxoCoil Chip 18NHLL2012-F18NM Coil Spring X0.35X7TR 4 VCO Maxon SP200/210 Radio Tcxo Circuit Diagrams & PCB LayoutsCircuit Diagrams & PCB Layouts RF PCB Circuit 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 components Surface mounted integrated circuit replacement Spare Parts & Maintenance Policy 11.3Calibration Program 11APPENDIX ACC-2003 Alignment BOX11.1Purpose 11.2Test Equipment Appendix a ACC-2003 Alignment BOX Calibration Program Primary Screen Asic Control Screen Rx Adjustment of Asic values TXTRIM2TXTRIM3 RX VOL Transmit Adjustments SAT BalanceSAT Deviation Audio Output Level Receive Adjustments V1 Default Asic Settings 11.4Default Settings11.4.1 V1 Band Default Settings V1 Default Frequency Table 11.4.2 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