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Motorola M110/MC micro aligment (VHF)

1. ALIGMENT

Note: Key the radio while making adjustments or measurments.

1.1 GENERAL

Perform all adjustments at a supply voltage 13.2  ~0.1 volts dc, unless the instruction call for a 
different voltage.

Interpret instruction to turn controls clockwise (CW) or counterclockwise (CCW) to mean  »as viewed 
from the component side of the circuit board«.

Picture A and B show the locations of the components.

When you perform any of the tune-up procedures given in sections 1.2, 1.3, 1.4 and 1.5, the radio 
must be completly assembled except for the chassis cover, top cover of the synthesizer compartment, 
and the radio sleeve. When you have completed the tune-up, install the synthesizer cover, chassis 
cover and sleeve before testing the radio against specifications following the procedures given in 
sections 1.4, 1.5, 1.6 and 1.8 .

The following test equipement is recommended for aligning and servicing the MC micro radio:
R2001D     Communication System Analyzer
or
R2200B             Service Monitor
GTF180A          Mobile test set with
GTF244A         Adapter cable for MC micro
PFT4053A        Psophometric filter
FTP3005B        Select 5 test unit (not rquired with R2001D)
R1001B            Power supply
or
S1347D            Power supply (for radios with 10 watts or less power)
R1037              Digital multimeter
or
R1024B            Digital multimeter

1.2 TO ADJUST THE TRANSMITER

(1) Preset the following pots:

* HI PWR       

       R453        Fully CCW

* LO PWR     

       R455 

Fully CCW

* VOLT LIMIT                R463        Fully CW

(2) Adjust the radios  dc supply voltage to 13.2  ~0.1 VDC (12.6 VDC for MAU1, six-watt model).

(3) Select the channel with highest transmit frequency.

Содержание M110

Страница 1: ...e up install the synthesizer cover chassis cover and sleeve before testing the radio against specifications following the procedures given in sections 1 4 1 5 1 6 and 1 8 The following test equipement is recommended for aligning and servicing the MC micro radio R2001D Communication System Analyzer or R2200B Service Monitor GTF180A Mobile test set with GTF244A Adapter cable for MC micro PFT4053A Ps...

Страница 2: ... models note the channels that gives The maximum power output If more than one channels gives tha same maximum or minimum power chose any one of those channels 11 Switch through all transmiot channels all high power channels for MAB889 On each channel key tha radio while watching tha dc voltage at Pin 4 of connector P6 or at test point CV on the command board Record the number of the channel that ...

Страница 3: ...r 2 Select any trasmit channel 3 Key the radio and adjust L151 all models except those with 2 ppm stability or R163 models with 2 ppm stability until the exact transmit frequency 100 Hz apears on the counter 4 Check all transmit channels to verify that the correct transmit freguencies have been programed 1 4 TO ADJUST THE DEVIATION 1 Connect the radio antenna output to a modulation analyzer or tes...

Страница 4: ...ive frequency and verify that test frequency is at least 2 5 VDC 1 5 2 Receiver 1 Find the tune up frequency ftune as follows a On single channel radios and multi chanel radios with a single receive frequency ftune freceive b On multi chanel radios that have a receive bandwidth of two MHz or less ftune frequency of highest frequency channel On multi channel radios that have a receive bandwidth gre...

Страница 5: ...t no further increase in voltage 9 Set the RF level of the generator 1 mV Modulate it with 1 kHz at 60 of full system deviation Full system deviation for channel spacing of 25 kHz is 5 kHz for 20 kHz 4 kHz for 12 5 kHz 2 5 kHz Adjust the volume control to get an audio level of about one volt RMS acros the 2 ohm load Slowly peak the quad coil L54 for maximum audio output 10 Adjust the squelch as fo...

Страница 6: ...Picture A Aligment points on RF board ...

Страница 7: ...Picture B Aligment points on command board ...

Страница 8: ...pt from service manual there might be some tipo errors in the text so I can not overtake any responsibility of any sort of the possible damages to your radio Beno s56kzn AUDIO OSC 47 uF 16 V 560 ohm 5 watt TO J5 PIN 6 OR TO J1001 PIN 4 TO J5 PIN 2 OR TO J1001 PIN 5 HI GND ...

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