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JVC AV29M201
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of JVC AV29M201 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

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Text excerpt from page 23 (click to view)
AV-29M201

ADJUSTMENT OF MTS CIRCUIT
Item MTS INPUT LEVEL check Measuring instrument Test point Adjustment part No.2 IN LEVEL Description 1. Select the “No.2 IN LEVEL” of the SOUND mode in SERVICE MENU. 2. Verify that the “No.2 IN LEVEL” is set at its initial setting value. MTS STEREO VCO adjustment Signal generator Frequency counter R OUT No.3 FH MON [AUDIO OUT] No.4 ST VCO 1. Receive a NTSC RF signal (non modulated sound signal) from the antenna terminal. 2. Select the “No.3 FH MON” of SOUND mode in SERVICE MENU, change the setting value from 0 to 1. 3. Connect the frequency connector to R OUT RCA pin of the AUDIO OUT. 4. Select the “No.4 ST VCO”. 5. Confirm the initial setting value of the “No.4 ST VCO”. 6. Adjust the “No.4 ST VCO” so that the frequency counter will display 15.73kHz± 0.1kHz. 7. Select the “No.3 FH MON” of the SOUND mode, and reset the setting value from 1 to 0. MTS SAP VCO adjustment Signal generator Frequency counter MPX No.9 5FH MON. 1. Receive a NTSC RF signal (non modulated sound signal) from the antenna terminal. 2. Connect between pin 4 of MPX connector and GND

Connector 4 pin SDA No.10 SAP VCO. 3 pin GND [MAIN PWB] R OUT [AUDIO OUT]

(pin 3 of MPX connector) through 1MΩ resistor. 3. Select the “No.9 5FH MON.” of the SOUND mode in SERVICE 4. 5. 6. 7. MENU, and reset the setting value from 0 to 1. Connect the frequency connector to R OUT RCA pin of the AUDIO OUT. Select the “No.10 SAP VCO”. Confirm the initial setting value of “No.10 SAP VCO”. Adjust the “No.10 SAP VCO” so that the frequency connector will display 78.67kHz±0.5kHz. 8. Select the “No.9 5FH MON.” of the SOUND mode, and reset the setting value from 1 to 0.

MTS FILTER check

No.6 FILTER

1. Select the “No.6 FLTER” of the SOUND mode in SERVICE MENU. 2. Verify that the “No.6 FLTER” is set at its initial setting value.

MTS SEPARATION adjustment

TV audio multiplex signal generator Oscilloscope

L OUT No.7 LOW SEP. R OUT [AUDIO OUT] No.8 HI SEP.

1. Input a stereo L signal (300Hz) from the TV Audio multiplex signal generator to the antenna terminal. (NTSC) 2. Connect an oscilloscope to L OUT RCA pin of the AUDIO OUT, and display one cycle portion of the 300Hz signal. 3. Change the connection of the oscilloscope to R OUT RCA pin of the AUDIO OUT, and enlarge the voltage axis. 4. Select the “No.7 LOW SEP.” of the SOUND mode in SERVICE MENU. 5. Confirm the initial setting value of the “No.7 LOW SEP.”. 6. Adjust the “No.7 LOW SEP.” so that the stroke element of the 300Hz signal will become minimum. 7. Change the signal to 3kHz, and similarly adjust the “No.8 HI SEP.”.

L-Channel signal waveform

R-Channel crosstalk portion Minimum

1 cycle

No. 51731

23

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AV29M201 JVC
Owner's Manual

Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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