Ericsson MDX LBI-39014A Maintenance Manual Download | Manualshive

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TABLE OF CONTENTS

RF BOARD . . . . . . . . . . . . . . . . . . . . . . . LBI-39017

SYSTEM BOARD . . . . . . . . . . . . . . . . . . . LBI-38842

AUDIO/LOGIC BOARD . . . . . . . . . . . . . . . . LBI-39016

AUDIO AMPLIFIER BOARD . . . . . . . . . . . . . LBI-38844

FRONT CAP ASSEMBLY . . . . . . . . . . . . . . . LBI-38850

LBI-38974

PA BOARD . . . . . . . . . . . . . . . . . . . . . . . LBI-39051

SERVICE SECTION . . . . . . . . . . . . . . . . . . LBI-39018

LBI-39014A

Maintenance Manual

MDX



UHF MOBILE RADIO

ERICSSONZ

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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Summary of Contents for MDX LBI-39014A

Page 1: ...FIER BOARD LBI 38844 FRONT CAP ASSEMBLY LBI 38850 LBI 38974 PA BOARD LBI 39051 SERVICE SECTION LBI 39018 LBI 39014A Maintenance Manual MDX UHF MOBILE RADIO ERICSSONZ 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 ...

Page 2: ...or 10 kHz resolution Frequency Stability 2 5 PPM 0 00025 Temperature Range 30 C to 60 C 22 F to 140 F Dimensions H X W X D Less Accessories Height 5 3 cm 2 1 inches Width 18 2 cm 7 2 inches Depth 24 0 cm 9 5 inches Weight 3 0 kg 6 6 pounds Antenna Impedance 50 Ohms TRANSMITTER Frequency Range Low Split Radio 403 to 440 MHz Mid Split Radio 440 to 470 MHz High Split Radio 470 to 512 MHz Output Power...

Page 3: ... maximum Continued Continued ENVIRONMENTAL STANDARD METHODS PROCEDURES Mil 810C Mil 810D Mil 810E High Temperature 501 1 Proc 2 501 2 Proc 2 501 3 Proc 2 Low Temperature 502 1 Proc 2 502 2 Proc 2 502 3 Proc 2 Low Pressure 500 1 Proc 1 500 2 Proc 1 500 3 Proc 1 2 Solar Radiation 505 1 Proc 1 505 2 Proc 1 505 3 Proc 1 Temperature Shock 503 1 Proc 2 503 2 Proc 1 503 3 Proc 1 Vibration 514 2 C8 P1 514...

Page 4: ...icroprocessor and associated memory circuits in cluding an Electrically Programmable Read Only Memory EPROM for controlling the processor and a programmable personality memory an EEPROM to store customer fre quencies tones and options The microprocessor provides con trol data to the Audio Signal Processor ASP conventional tone generation and detection frequency data for the synthe sizer and sends ...

Page 5: ...h of these important factors must be considered when ad dressing the following instructions USER INTERFACE Operating controls are located on the radio front panel and microphone The Front panel Light Emitting Diode LED display pro vides radio status and communication control information for the operator The keypad is used for activation of various fea tures and functions Turning The Radio On Off T...

Page 6: ...ted channel from the scan list 5 Repeat preceding steps 2 through 5 for each chan nel to be removed from the scan list REVIEWING THE SCAN LIST 1 Confirm that the radio is turned on If not press the POWER switch 2 If the SCAN indicator is lit press and release the SCAN switch to disable the scan function 3 Select each channel one at a time using the CHANNEL UP or DOWN switch and confirm channels in...

Page 7: ...g scan which would cause big gaps in the receive audio and allows time to respond to a received call The hang time also prevents the radio from immediately leaving the channel and resuming scan when the PTT is re leased to allow time for a return call The scan hang time is normally 2 seconds in length and PC pro grammable from 0 3 to 5 seconds on 0 1 seconds steps If no other channel activity occu...

Page 8: ...ery second otherwise If there is only a Priority 1 P1 channel then it is sampled every 2 5 seconds if it has Channel Guard and carrier is detected and every 500 millisec onds otherwise If there are P1 and P2 Priority channels the sample rate will vary In order to show the various scan conditions the following conditions are used CONDITION 1 P1 and P2 have Channel Guard Programmed a No carriers det...

Page 9: ...lustrated as follows ERICSSON GE TYPE 99 FORMAT INDIVIDUAL CALL FORMAT 1 0 SEC 20 TONE A 200 MS 25 GAP 1 0 SEC 300 0 TONE B GROUP CALL FORMAT 1 0 SEC 20 TONE A 200 MS 25 GAP 1 0 SEC 300 0 TONE D SUPER GROUP CALL FORMAT 1 0 SEC 20 TONE C 200 MS 25 GAP 1 0 SEC 300 0 TONE D For example assume the paging number to be 123 The first digit of the paging number is a 1 Look in Table 3 and read down the col...

Page 10: ... Format In Group Call application the Tone Group is determined by Table 7 while the frequency is determined by Table 6 Refer to the following examples EXAMPLE 1 Group Call Code 07 also code 27 and 37 The digit 0 in Table 7 shows the Tone B is in Tone Group 2 TG2 along with 20 to 29 and 30 to 39 Tone number 7 in Tone Group 2 is 832 5 Hz See Table 6 EXAMPLE 2 Group Call Code 98 also code 48 and 88 T...

Page 11: ...12 MHz KITS 344A4253G1 Hardware Kit No 1 344A4256G3 Hardware Kit No 2 403 440 MHz 344A4256G4 Hardware Kit No 2 440 470 MHz 344A4256G5 Hardware Kit No 2 470 512 MHz CABLES 19A704884P4 J1 To J103 19A704884P4 J2 To J102 19B801467P1 J3 to J705 to J704 19B801253P5 Cable Ribbon between J707 on Audio Ampliffier Board to P707 on Display Board 19A705235P3 Cable Ribbon between J901 on Audio Amplifier Board ...

Page 12: ...ASSEMBLY DIAGRAM MDX UHF Mobile Radio 19D904183 Sh 5 Rev 18 LBI 39014A 11 ...

Page 13: ...ASSEMBLY DIAGRAM MDX UHF Mobile Radio 19D904183 Sh 7 Rev 18 LBI 39014A 12 ...

Page 14: ...INTERCONNECTION DIAGRAM MDX UHF Mobile Radio 188D5198 Sh 1 Rev 0 LBI 39014A 13 ...

Page 15: ...INTERCONNECTION DIAGRAM MDX UHF Mobile Radio 188D5198 Sh 3 Rev 0 LBI 39014A 14 ...

Page 16: ...INTERCONNECTION DIAGRAM MDX UHF Mobile Radio 188D5198 Sh 4 Rev 0 LBI 39014A 15 ...

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