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SHARP 21HFV5RU
Service Manual


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

Description of SHARP 21HFV5RU 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 13 (click to view)
SIF (NICAM/A2) ADJUSTMENT
No. Adjustment point 1 VCO COIL T2300 Adjusting condition/procedure 1. Receive âPAL COLOUR BARâ signal. 2. Connect DC Voltmater to Main Board socket SC304 pin 1. 3. Check and turn T2300 counter-clockwise (Left) so that DC voltmeter appear 0V, then turn it clockwise (Right) so that DC voltmeter appear 5V. After that , turn T2300 counter-clockwise (Left) until DC voltmeter appear 2.5 ± 0.1 Vdc. ** UNIT BOARD ADJUSTMENT Vcc IF Input Freq 5V ± 0.1Vdc 38.9MHz ± 10KHz Waveform or others 1 BEAM PROTECTOR

PROTECTOR OPERATION CHECKING
No. Adjustment point Adjustment condition/procedure 1) Receive "Monoscope Pattern" signal. 2) Set CONTRAST MAX. 3) Set BRIGHT MAX. 4) During the Collector & Emitter of Q853/4/5 short, make sure the protector ON and switch to standby mode. 1) Receive "Monoscope Pattern" signal. 2) Connect output of Bias Box to D602 cathode (C602 positive). 3) Set voltage of Bias Box to 18V and make sure the protector is not working. 4) Set voltage of Bias Box to 24.5V, and make sure the protector is working. 3 OTHER PROTECTOR 1) Once finish rectified Electrolytic Capacitor short testing in +B line, check all possible damaged components on +B line. (Use random selected set for inspection) Waveform or others * Select one of Q853/4/5 to do each short.

2

H, V PROTECTOR

Adjust T2300 until TP2300 (NICAM BOARD TEST POINT) become 2.5 ± 0.1Vdc. Check after assembly NICAM BOARD Test point: Main Board socket SC304 pin 1. Preset selected receptiion frequency (AFT OFF) Check Voltage 2.5 ± 0.1Vdc. Precaution: The Vcc, fo and other factors are considered in the unit board of the 1.0V tolerance which differ from the adjustment accuracy.

A/V INPUT, OUTPUT & COMPONENT IN CHECKING
No. Adjustment point 1 VIDEO AND AUDIO OUTPUT CHECK Adjustment condition/procedure 1) Receive the "PAL Colour Bar" signal (100% White Colour Bar, Sound 400 Hz 100% Mod.) 2) Terminate the Video output with a 75 ohm impedance. Make sure the output is as specified (1.0 Vp-p ±3 dB). 3) Terminate the Audio output with a 10K ohm impedance. Make sure the output is as specified (1.2 Vp-p ±3 dB). 1) Using the TV/VIDEO key on the remote controller, make sure that the modes change in order of TV, AV1, AV2 & TV again and the video & audio output are according to the input terminal for each mode. 1) Connect YUV & Audio signal to Component In terminal and Audio terminal. 2) Using the TV/VIDEO key on the remote controller, press it until the modes change to COMPONENT, confirm output appears. Waveform or others

13
2 3

VIDEO AND AUDIO INPUT CHECK

COMPONENT IN CHECK

21H-FV5RU

13-1

13-2

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