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Ericsson MPI-II LBI-38557A, Руководство по обслуживанию

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Figure 4 - Location of Tuning Controls and Test Points

LBI-38557

LBI-38557

4

Содержание MPI-II LBI-38557A

Страница 1: ...SECTION FOR MPI II VHF PERSONAL RADIO Printed in U S A Copyright January 1991 Ericsson GE Mobile Communications Inc Maintenance Manual LBI 38557A Ericsson GE Mobile Communications Inc Mountain View R...

Страница 2: ...er tool 7 5 16 wrench NOTE TORX is a Registered Trademark of Camcar Division of Textron Inc BATTERY 1 Turn the radio OFF 2 Place thumb on bottom of battery pack and press battery pack toward the top o...

Страница 3: ...he user s requirements The EEPROM is programmed by using an IBM compatible personal computer with MSDOS Interface Box 19D438367G1 RS 232 Cable 19B235027P1 Programming Cable TQ 3352 and Programming Sof...

Страница 4: ...on the power meter See Figure 4 for the location of tuning controls and test points Frequency Set Measure the frequency of the RF output signal with the frequency meter It should be within 100 Hz of t...

Страница 5: ...Figure 4 Location of Tuning Controls and Test Points LBI 38557 LBI 38557 4...

Страница 6: ...eck the lower receive frequency TROUBLESHOOTING This section provides a guide to troubleshooting the MPI II VHF radio The following procedures will assist in de terming if the problem is in the RF cir...

Страница 7: ...R619 3 Check the RX MUTE and MUTE gates are in correct states 4 In the voice path check that audio is reaching the output stage U602 B pin 7 and its output on pin 1 5 Check that power is applied to a...

Страница 8: ...emperature controlled soldering iron or a temperature controlled hot air soldering station A hot air system is recommended for the removal of compo nents on the multi layered boards used in the MPI II...

Страница 9: ...e module should drop out of the eggcrate casting To install a module clean any solder from the plated through holes and clean all flux from the board Next install the replacement module making sure th...

Страница 10: ...Z501 and Z502 See Figure 10 b If either crystal filter can does not have a dot on top then the side of the can which has the part numberprinting will be usedfor orientation Orient the marking side of...

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