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Picture »C«

Connecting Audio Oscillator to microphone

This is a transcript 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 %
¼ watt

TO J5 PIN 6
(OR TO J1001 PIN 4)

TO J5 PIN 2
(OR TO J1001 PIN 5)

HI

GND

+

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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