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HME Clear-Com RM-704, Instruction Manual

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HME Clear-Com RM-704 Instruction Manual Download Page 33

M S - 7 0 4 / R M - 7 0 4   F O U R - C H A N N E L   M A I N / R E M O T E

3 - 1

MAINTENANCE

INTRODUCTION

This chapter provides maintenance information, including a block diagram and troubleshooting tips. 

Caution: These servicing instructions are for use by qualified personnel only. To reduce the risk of electrical 

shock, do not perform any servicing other than that contained in the operating instructions unless you 
are qualified to do so.

MS-704 BLOCK DIAGRAM

Summary of Contents for Clear-Com RM-704

Page 1: ...MS 704 FOUR CHANNEL MAIN STATION CLEAR COM ENCORE I N S T R U C T I O N M A N U A L RM 704 FOUR CHANNEL REMOTE STATION...

Page 2: ...reverse engineering No part of this document may be reproduced in any form by any means without prior written authorization of Clear Com an HME Company Clear Com Offices are located in California USA...

Page 3: ...ptions 1 7 Hidden Adjustment Controls 1 8 Rear Panel Options 1 9 Intercom Line Termination MS 704 1 9 Short Circuit and and Overload Conditions 1 9 Summary of Front Panel Lights 1 10 INSTALLATION 2 1...

Page 4: ...t Jumper 2 12 MAINTENANCE 3 1 Introduction 3 1 MS 704 Block Diagram 3 1 RM 704 Block Diagram 3 2 TECHNICAL SPECIFICATIONS 4 1 MS 704 RM 704 Four Channel Stations 4 1 LIMITED WARRANTY 5 I Warranty Peri...

Page 5: ...oint where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer 12 Use only with the cart stand tripod bracket or table specified by the manufacturer or sold...

Page 6: ...60065 7 Safety requirements And thereby compliance with the requirement of Electromagnetic Compatibility Directive 2004 108 EC and Low Voltage Directive 2006 95 EC This device complies with Part 15 of...

Page 7: ...rious single or multi channel remote stations such as beltpacks and loudspeaker stations Clear Com manufactures a wide variety of both portable and fixed installation units All are compatible with eac...

Page 8: ...A Auto Call Speaker On Off Volume Channel D Channel C Channel B Channel A Talk Listen Call Talk Listen Call Talk Listen Call Announce All Talk Link On Mic Select Panel Headset Mic On Panel Mic On Off...

Page 9: ...n monitoring and program feed to intercom lines for local talent cuing IFB INTERNAL IFB IFB Interrupt Foldback of program feeds Program can be fed to each channel and interrupted IFB when a talk funct...

Page 10: ...ot bring the whole system down Short circuit indicators are provided on the front panel for each channel HEADSET AUDIO LIMITER The headset audio limiter restricts the maximum audio level heard in the...

Page 11: ...le short or overload The other channels continue to operate normally The MS 704 s advanced fail safe circuit will bring the power back up even under full load conditions Front panel lights indicate a...

Page 12: ...ssed momentary only This button lights amber when pressed Monitoring Main Program The main program input is the one on the XLR connector on the rear panel To listen to the main program in the speaker...

Page 13: ...the system Pressing the button momentarily interrupts power to the other beltpacks and stations in the system If there are other power supplies or main stations in the system then the remote mic kill...

Page 14: ...mum gain position fully counter clockwise This level matches the headset microphone level when the panel microphone is worked up close Raising the gain from the factory setting should be done carefull...

Page 15: ...minating networks available If more than one MS 704 or any other master station is installed on the same intercom line then all of the terminations in all of the stations except one must be disabled C...

Page 16: ...tton to on quickly press it once The button is locked to on for hands free use Pressing the button again releases the latch Otherwise when you press and hold Key On State Off State Momentary or Latchi...

Page 17: ...S 7 0 4 R M 7 0 4 F O U R C H A N N E L M A I N R E M O T E S T A T I O N S 1 1 1 a button the feature switches on and when you release the button the feature switches off This is called momentary us...

Page 18: ...M S 7 0 4 R M 7 0 4 F O U R C H A N N E L M A I N R E M O T E S T A T I O N S 1 1 2...

Page 19: ...be terminated to keep the line drive circuits stable The MS 704 provides switchable terminations of the intercom lines Clear Com main stations and power supplies provide switch selectable termination...

Page 20: ...channel An overload lasting a short period will not cause the power supply to interrupt power AUTOMATIC POWER RESTORE The MS 704 s internal power supply senses the difference between short term and lo...

Page 21: ...during overloads and short circuits to restore power as quickly as possible MULTI CHANNEL REMOTE STATIONS MAINTAIN THE POWER LINE ISOLATION Internal jumpers in the RM 704 allow you to select non isola...

Page 22: ...allow you to defeat the power channel isolation of the unit as described in the following procedure To connect two or more RM 704 channels together 1 Please observe anti static procedures The circuit...

Page 23: ...ng upon how many shorts or overloads a channel has experienced recently the MS 704 will attempt to turn power on again within 0 5 to 20 seconds of automatically cutting off power to an overloaded chan...

Page 24: ...nd 1 DC resistance of the ground or common conductor affects crosstalk For runs longer than 500 ft 152 5 m do not use wire smaller than 20 gauge 2 The capacitance of the interconnect cable affects sys...

Page 25: ...nector must also be isolated from the chassis Pin 1 should not be connected to the shell of the XLR connector Figure 2 8 Interconnect Cable Detail Note The remote stations connected to each channel ar...

Page 26: ...technical specifications for details Wiring Pin 1 Mic common Pin 2 Mic hot Pin 3 Headphone common Pin 4 Headphone hot CAUTION Do not tie pin 1 and pin 3 together PANEL MIC CONNECTOR FRONT PANEL Two p...

Page 27: ...RM 704 has a male and female pair of XLR 3 connectors for each intercom line The male female connectors are wired in parallel and intended for loop through connection The pinout of the intercom conne...

Page 28: ...ry connector for instructions on connecting to the relay contacts The pinout of the announce output connector is as follows Pin 1 Ground shield Pin 2 Signal Pin 3 Signal IFB HOT MIC REAR PANEL 1 4 INC...

Page 29: ...option DIP switch and a talk is active on that channel These inputs are electronically balanced with a high input impedance Refer to the illustration above for connection of the program inputs Pins 5...

Page 30: ...ll is received on the channel on which the interrupt has been enabled the program will be interrupted for the duration of the call signal on that channel To cause an interrupt of the program from this...

Page 31: ...M S 7 0 4 R M 7 0 4 F O U R C H A N N E L M A I N R E M O T E 2 1 3...

Page 32: ...M S 7 0 4 R M 7 0 4 F O U R C H A N N E L M A I N R E M O T E 2 1 4...

Page 33: ...ce information including a block diagram and troubleshooting tips Caution These servicing instructions are for use by qualified personnel only To reduce the risk of electrical shock do not perform any...

Page 34: ...M S 7 0 4 R M 7 0 4 F O U R C H A N N E L M A I N R E M O T E S T A T I O N S 3 2 Figure 3 11 MS 704 Block Diagram RM 704 BLOCK DIAGRAM...

Page 35: ...M S 7 0 4 R M 7 0 4 F O U R C H A N N E L M A I N R E M O T E S T A T I O N S 3 3 Figure 3 12 RM 704 Block Diagram...

Page 36: ...M S 7 0 4 R M 7 0 4 F O U R C H A N N E L M A I N R E M O T E S T A T I O N S 3 4...

Page 37: ...put Impedance 1K Mic Limiter Threshold 0dBu 3dB Mic Limiter Range 17dB Program Line Input Maximum Level before Clipping 20dBu Input Impedance 5K Headset Output Load Impedance 8 Output Impedance 25 Out...

Page 38: ...5 Headset Mic Party Line 0 5 Headset Mic Line Out 0 5 Program Input Party Line 0 2 Program Input Headset Out 0 2 Program Input Speaker Out 0 5 Party Line Headset Out 0 2 Party Line Speaker Out 0 5 No...

Page 39: ...nnel Beltpacks 10 speaker stations or 12 headset stations distributed over all channels DC Power RM 704 Input Voltage Range 20 30 VDC Input Current Idle 165 mA Input Current Max 195 mA Rear Panel Conn...

Page 40: ...me control 4 Short LEDs 1 Panel mic gain control 1 Sidetone adjust control 1 Headset audio limiter DIP switch 3 Interrupt enable DIP switches 4 Auto call DIP switches 4 Auto talk listen DIP switches 4...

Page 41: ...704 RM 704 19 in W x 3 5 in H x 10 5 in D 483 mm x 88 mm x 267 mm Weight MS 704 10 86lbs 4 94 kg RM 704 10 07lbs 4 58kg Notice About Specifications While Clear Com makes every attempt to maintain the...

Page 42: ...M S 7 0 4 R M 7 0 4 F O U R C H A N N E L M A I N R E 4 6...

Page 43: ...ones and spare parts have a limited warranty of one year UHF wireless IFB products have a limited warranty of one year UHF wireless intercom systems have a limited warranty of three years All other Cl...

Page 44: ...el 8610 65811360 65815577 Once the standard warranty period has expired the User Support Center will continue to provide telephone support if you have purchased an Extended Warranty or Service Contrac...

Page 45: ...ndard two year warranty The total warranty period will not extend beyond five years Any purchase of an extended warranty provides 24 x 7 customer support in addition to the warranty immediately upon p...

Page 46: ...rranty does not cover any defect malfunction or failure caused beyond the control of Clear Com including unreasonable or negligent operation abuse accident failure to follow instructions in the manual...

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