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LBI-39181

ericssonz

Maintenance Manual

DTMF Microphone

344A4611P1 & P2

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Содержание 344A4611P1

Страница 1: ...LBI 39181 ericssonz Maintenance Manual DTMF Microphone 344A4611P1 P2 ...

Страница 2: ...to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Copyright September 1995 Ericsson Inc CREDITS MODULINK ARMO DUR Million Cycle Plus and Top Talk Sound Channels are trademarks of Shure Brothers Inc NOTICE This manual covers Ericsson and General Electric products manufactured and sold by Ericsson Inc NOTICE Repairs to this equipment should be made ...

Страница 3: ...gned it fits naturally and comfortably in the hand and is not affected by heat or humidity The rugged ARMO DUR case is immune to oil grease most fumes and solvents salt spray sun rust and corrosion It is outstanding in its ability to withstand mechanical shocks and vibration The Million Cycle PIus leaf type switch is a double pole single throw type designed to resist the effects of severe operatin...

Страница 4: ... respect to ground Environmental Conditions Operating Temperature 40 to 60 C 40 to 140 F Storage Temperature 54 to 85 C 65 to 185 F Relative Humidity 0 to 95 non condensing Microphone Connector 6 conductor modular telephone type PTT Switch Assembly Mechanical Double pole single throw leaf type normally open Electronic Open NPN transistor collector to ground positive polarity only maximum on state ...

Страница 5: ...all screwdriver supplied with the microphone in rear case hole A just above the cable jack see Figure 5 to unlock the plug and withdraw the plug from the jack ADJUSTMENTS After connection to the communications equipment and with equipment power turned on the microphone sensitivity and DTMF output levels should be adjusted with the supplied screwdriver as follows 1 MICROPHONE SENSITIVITY Press the ...

Страница 6: ...nded equipment Soldering operations must be performed using a fine pointed low wattage soldering iron CAUTION TO DISASSEMBLE THE MICROPHONE 1 Disconnect the microphone and remove the cable 2 Remove the four Phillips head screws from the back of the microphone 3 Hold the microphone with its back toward you and the cable connector down Carefully separate the case back slightly from the front Pivot t...

Страница 7: ...cable Thread the cable through the slot in the board Lift the board free of the case carefully sliding the whole length of the flexible cable through the slot TO CONCLUDE DISASSEMBLY OF THE MICROPHONE The membrane switch assembly and keypad can now be lifted out of the case 1 To free the rear board from the case back unsolder the leads from the hang up button and leaf switch terminals 2 To remove ...

Страница 8: ...LBI 39181 8 REPLACEMENT PARTS Cable and Modular Plug Figure 4A 344A4611P21 Cable and Modular Plug Figure 4B 344A4611 P22 OPTIONAL ACCESSORY Mounting Bracket 344A4678P1 Figure 7 Parts Layout 344A4611 ...

Страница 9: ...SCHEMATIC DIAGRAM LBI 39181 9 98E401 11 2 ...

Страница 10: ...Ericsson Inc Private Radio Systems Mountain View Road Lynchburg Virginia 24502 1 800 528 7711 Outside USA 804 528 7711 Printed in U S A ...

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