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JVC AV21BD5EKI
Service Manual


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

Description of JVC AV21BD5EKI 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 11 (click to view)
AV-21BD5EKI AV-21BD5EP AV-21BD5EE AV-21BD5EKIS AV-21BD5EPS AV-21BD5EES

ADJUSTMENTS
+B VOLTAGE CHECK
1. Receive the standard colour bar signal. 2. Connect digital voltmeter between + of B1 Line circuit and GND. 3. Confirm that voltage is DC 123V # 2.0V.

SCREEN
1. Set TV in AV mode without video signal ⇒ Black screen. 2. Set [WP Red], [WP Green] and [WP Blue] equal to “32”. 3. Set [Black R], [Black G] equal to “8”. 4. Set TV in normal I mode. 5. Adjust SCREEN VR (on FBT) such that the highest cathode cut-off voltage measured on CRT SOCKET PWB ASS’Y is DC 125V ± 5V.

WHITE BALANCE
NOTE : Confirm SCREEN Adjustment has been adjusted.

■ LOW LIGHT
1. 2. 3. 4. Input the 10-step gray scale signal. (include10% Black) Enter the SERVICE MODE. Turn the SCREEN VR (on FBT) gradually, to where the 2nd gray bar(10% Black) faintly visible. Adjust [Black B] and [Black R] not to the colours on the gray bar.

■ HIGH LIGHT
5. Apply the white signal. 6. Adjust [R DRIVE] and [G DRIVE] so that the picture becomes white.

FOCUS
1. Input the crosshatch pattern signal. 2. Adjust the FOCUS VR (on FBT) to have the best resolution on screen.

VERTICAL GEOMETRY
Adjust [V Amp], [V Shift] and [V Slope], [V Slope] [V S Cor] to compensate for vertical distortion.

HORIZONTAL PICTURE CENTERING
Adjust [H Shift] to have the picture in the center of the screen.

No.51742

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