Codan_2110_serv.pdf

Manpack Transceiver 2110 series Repair Guide No part of this guide may be reproduced, transcribed, translated into any language or transmitted in any form whatsoever without the prior written consent of Codan Limited. Copyright 2010 Codan Limited. CODAN, NGT, Easitalk, CIB and CALM are registered trademarks of Codan Limited. Other brand, product and company names mentioned in this document are trademarks or registered trademarks of their respective holders. Codan part number 15-04139-EN Issue 1, October 2010. The English version takes precedence over any translated versions. .au Head Office Codan Limited ABN 77 007 590 605 81 Graves Street Newton SA 5074 AUSTRALIA Telephone +61 8 8305 0311 Facsimile+61 8 8305 0411 .au Codan (UK) Ltd Unit C4 Endeavour Place Coxbridge Business Park Farnham Surrey GU10 5EH UNITED KINGDOM Telephone +44 1252 717 272 Facsimile+44 1252 717 337 .au Codan US, Inc. 1 Fishers Road Pittsford NY 14534 USA Telephone +1 585 419 9970 Facsimile+1 585 419 9971 Manpack Transceiver 2110 series Repair Guidei Table of contents Index Introduction Overview of this guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 How to use this guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Board replacement philosophy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Circuit board precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Transmitter precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Probe precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Contact information Ordering information Overview General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Front panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Back panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Battery pack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Brief description General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Transmit path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Front Panel PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Audio ?95;5?< -4?4 -./? ? ? -? ? ?0;?95 ? ?0;?95 -.?6 ?;? ? ? ?: <9?. <9?/ <9?4 ?95;5?;? ?95;5?;? ?;?95;9?- <9?1 <?1 <?. <?/ ?95;9?- ?95;9?8 :. ?9?;? <? ?;?95;5?- ?;?95;9?< ?<= ?;? <?4 ?;? ? ?5=?;?55? <? ?+?)*+%? ?.74 -? ?5? ? ? ?9?5 ? 9? ? ?14 ?11 ?1. ?. ?1 ?4 ? ? ?7 ?8 ?6 ? ?./ ?. ?.1 ?.4 ?.? ?.? ?.7 ?1/ ?.?.6 ?.8 ?9? ? ? -4?4 -?;? ?;5? -.?7? ? ?95< ?95- ?-?A?./? 4?4#?A?./? Repair procedures, tests, and adjustments 54Manpack Transceiver 2110 series Repair Guide Setup of test equipment for 2110 Figure 18:Setup for 2110 0208 Test Set AC voltmeter CRO Frequency counter 13.6 V power supply Power meter Dummy load RF signal generator (front panel) Receive audio Audio output (test only) Manpack transceiver 08-06304-001 coaxial cable to 12 V power supply Dummy load Artificial antenna Spectrum analyser (optional) RF sampler 08-06344-001 vacuum tester (refer to Codan) WARNING Ensure that polarity of this cable is correct before applying power only required for some tests only required for some tests Repair procedures, tests, and adjustments Manpack Transceiver 2110 series Repair Guide55 Repair procedures and fault diagnosis General The information in this section should be read in conjunction with the appropriate flowchart. See below to determine which flowchart you should view. You should not disassemble the 2110 until the preliminary checks in the Repair flowchart are completed. If the Repair flowchart refers you to any of the other flowcharts, you should disassemble the transceiver only when this is indicated in the process. NOTE The fault diagnosis and repair procedures assume that the transceiver has no software or hardware options installed. See page 115, Options to identify any specific testing for options. NOTE All fault diagnosis should begin with the Repair flowchart (see Figure 29 on page 95). Check voltages on boards as required. NOTEAll measurements for output power are in PEP. WARNING When taking measurements, keep the earth lead on the probe as short as possible. FlowchartSee. Repair flowchartFigure 29 on page 95 Disassembly flowchartFigure 30 on page 97 Power On fault diagnosis flowchartFigure 31 on page 99 Receive fault diagnosis flowchart 1Figure 32 on page 101 Receive fault diagnosis flowchart 2Figure 33 on page 103 Transmit fault diagnosis flowchart 1Figure 34 on page 105 Transmit fault diagnosis flowchart 2Figure 35 on page 107 Repair procedures, tests, and adjustments 56Manpack Transceiver 2110 series Repair Guide Setting up the test equipment To set up the test equipment for the operational tests: 1Connect the test equipment (see Figure 18 on page 54) and use the settings provided in Table 14. 1Connect the transceiver to the test equipment. NOTEDo not connect the transceiver. Table 14:Settings for test equipment ItemSetting Power supply13.6 V DC AC voltmeterSuit audio level Frequency counter10 samples/second If accuracy greater than 20 Hz is required, connect the counter to a traceable reference 0208 Test SetBalance:Centre position (two tones) Output level: (left knob) 20 dBv Output level: (right knob) 50 dBv Speaker/Load:Speaker Noise:Up position (noise is off) PTT:Up position (PTT is off) Power meter 25 W PEP, 2 to 30 MHz Spectrum analyserSpan:20 kHz Resolution bandwidth: 100 Hz RF signal generatorOutput:121 dBm RF:Off Modulation:Off CRO5 V/div 0.1 s/div Repair procedures, tests, and adjustments Manpack Transceiver 2110 series Repair Guide57 Setting the balance on the 0208 To set the balance on the 0208: 1Set up the equipment (see page 56, Setting up the test equipment). 1Select the channel on the oscilloscope to which the CRO output of the 0208 is connected. 1Select a channel on the transceiver to test. 1Ensure both output level controls on the 0208 are set to the minimum level. 1Switch on PTT on the 0208. 1Adjust the output level of the 0208 until the RF output power of the transceiver reaches a maximum (approximately 23 dBv on the 0208). 1Adjust the oscilloscope to view the RF envelope. 1Adjust the balance control on the 0208 for zero crossover (balanced) on the oscilloscope. Figure 19:Balance control on the 0208 1Switch off PTT on the 0208. Balanced (zero crossover)Unbalanced Repair procedures, tests, and adjustments 58Manpack Transceiver 2110 series Repair Guide Mechanical inspection Inspecting the transceiver for damage To inspect the transceiver unit and battery pack: 1Check for: physical damage (that is, crushed and/or distorted cables, cracked case) signs of water ingress (vapour on inside of screen) corrosion 1Check that: the connectors are clear of foreign material the connectors are free from corrosion the pins on all connectors are straight and not distorted 1Record your results and actions (see page 109, Test sheet for the 2110 series Manpack Transceiver). 1Return to the Repair flowchart (see Figure 29 on page 95). Repair procedures, tests, and adjustments Manpack Transceiver 2110 series Repair Guide59 Operational tests Performing the Power On test To perform the Power On test: 1Connect the battery. 1Press on the front panel to switch on the transceiver. 1Hold on the front panel for 2 seconds to switch off the transceiver. 1Disconnect the battery from the transceiver. 1Connect the power supply to the connector at the base of the transceiver unit. 1Press on the front panel to switch on the transceiver. 1Tap on the front panel until the backlight is switched off. 1Measure the current at the power supply. 1Record your results and actions (see page 109, Test sheet for the 2110 series Manpack Transceiver). 1Return to the Repair flowchart (see Figure 29 on page 95). PassFront panel screen displays the Codan logo, then the home screen (typically the channel screen). PassCurrent drawn is 10 dB from the 0 dBm reference point. PassA reading on the AC voltmeter that is an increase of 10 dB from the 0 dBm reference point. Repair procedures, tests, and adjustments Manpack Transceiver 2110 series Repair Guide65 Performing the AGC test To test the AGC of the transceiver: 1Set up the equipment (see page 56, Setting up the test equipment). 1Select a channel to test. 1Set the RF signal generator to 1.0 kHz above the SCF of the selected USB channel or 1.0 kHz below the SCF of the selected LSB channel. 1Set the RF output level of the RF signal generator to 13 dBm. 1Adjust the volume via the front panel so the tone is clearly audible. 1Set the 0 dB reference on the AC voltmeter to the level of the tone (approximately 5 dBm at full volume). 1Reduce the RF output level of the RF signal generator until the reading on the AC voltmeter reduces by 6 dB. 1Record your results and actions (see page 109, Test sheet for the 2110 series Manpack Transceiver). 1Switch off the RF output from the RF signal generator. 1Return to the Repair flowchart (see Figure 29 on page 95). Performing the Audio Output test To test the audio output from the transceiver: 1Set up the equipment (see page 56, Setting up the test equipment). 1Replace the AC voltmeter with an oscilloscope. 1Adjust the oscilloscope to view a 1 kHz tone at 1 V pp. 1Select a channel to test. 1Set the RF signal generator to 1.0 kHz above the SCF of the selected USB channel or 1.0 kHz below the SCF of the selected LSB channel. 1Set the RF output level of the RF signal generator to 60 dBm. 1Switch on the RF output from the RF signal generator. 1Switch the 0208 speaker to Load. PassAn RF output level from the RF signal generator that is < 106 dBm (RF pre-amp on). NOTEThis is typically 0.2 V/div, sweep 0.5 s/div. Repair procedures, tests, and adjustments 66Manpack Transceiver 2110 series Repair Guide 1While viewing the tone on the oscilloscope, use the volume control on the front panel to increase the audio level to full volume. 1Record your results and actions (see page 109, Test sheet for the 2110 series Manpack Transceiver). 1Switch off the RF output from the RF signal generator. 1Switch the 0208 speaker to Speaker. 1Replace the oscilloscope with an AC voltmeter. 1Return to the Repair flowchart (see Figure 29 on page 95). Performing the Selectivity test To test the selectivity of the transceiver: 1Set up the equipment (see page 56, Setting up the test equipment). 1Select a channel to test, preferably near the centre of one of the designated bands (see page 60, Examining the profile in the transceiver). 1Set the RF signal generator to 1.0 kHz above the SCF of the selected USB channel or 1.0 kHz below the SCF of the selected LSB channel. 1Set the RF output level of the RF signal generator to 120 dBm. 1Switch on the RF output from the RF signal generator. 1Adjust the volume via the front panel to full volume. 1Set the 0 dB reference on the AC voltmeter to the level of the tone (approximately 16 dBm). 1Set the RF signal generator to 1.0 kHz below the SCF of the selected USB channel or 1.0 kHz above the SCF of the selected LSB channel. 1Increase the RF output level of the RF signal generator to 55 dBm. 1Record your results and actions (see page 109, Test sheet for the 2110 series Manpack Transceiver). PassA waveform that does not clip, and reaches a maximum of 1.0 V pp. NOTE The receive audio output from the 0208 is half that of the speaker on the 2110, that is, the audio output from the 2110 should reach approximately 2 V pp at full volume. NOTE The setting varies slightly depending on the selected channel with respect to its positioning along the filter band and the noise from the RF signal generator. PassA reading on the AC voltmeter that is < 0 dB. Repair procedures, tests, and adjustments Manpack Transceiver 2110 series Repair Guide67 1Set the RF signal generator to 4.0 kHz above the SCF of the selected USB channel or 4.0 kHz below the SCF of the selected LSB channel. 1Record your results and actions (see page 109, Test sheet for the 2110 series Manpack Transceiver). 1Switch off the RF output from the RF signal generator. 1Return to the Repair flowchart (see Figure 29 on page 95). Performing the Noise Limiter test To test the noise limiter circuit in the transceiver: 1Set up the equipment (see page 56, Setting up the test equipment). 1Select a channel to test. 1Set the RF signal generator to 1.0 kHz above the SCF of the selected USB channel or 1.0 kHz below the SCF of the selected LSB channel. 1Set the RF output level of the RF signal generator to 115 dBm. 1Switch on the RF output from the RF signal generator. 1Adjust the volume via the front panel so the tone is clearly audible. 1Switch on the noise on the 0208. 1Record your results and actions (see page 109, Test sheet for the 2110 series Manpack Transceiver). 1Switch off the RF output from the RF signal generator. 1Switch off the noise on the 0208. 1Return to the Repair flowchart (see Figure 29 on page 95). PassA reading on the AC voltmeter that is < 0 dB. PassFaint 1 kHz tone with buzzing is audible from the 0208 speaker. Repair procedures, tests, and adjustments 68Manpack Transceiver 2110 series Repair Guide Transmit tests Performing the Basic Transmit test To test if the transceiver can transmit: 1Set up the equipment (see page 56, Setting up the test equipment). 1Select a frequency between 4 and 6 MHz. 1Hold down PTT on the handset, then whistle into the microphone on the handset. 1Release PTT on the handset. 1Press Tx PWR until Lo is selected. 1Hold down PTT on the handset, then whistle into the microphone on the handset. 1Release PTT on the handset. 1Record your results and actions (see page 109, Test sheet for the 2110 series Manpack Transceiver). 1Press Tx PWR until Hi is selected. 1Return to the