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SHARP LC23K7
Service Manual


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

Description of SHARP LC23K7 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.

The manual is available in languages: English

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Text excerpt from page 23 (click to view)
2. raster, but no picture

Check if the unit can operation?

yes

Check if the all channels have signal?

no

no no

Enter

factory-menu, CLEAR then turn

Replacing CPU board

operation EEPROM,

Which is no VGA/DVI signal of channels YPRPB TV Testing power supply (+5V-V) of video processing board no

Replacing CPU board

off , turn on again , it if display picture. yes Adjust CPU board again

Check input 24V of sound conversion board no Check input 24V-A of CPU board

Replacing U30

no

Testing PIN65 of U30 SYNC signal

yes

Display �NO-SIGNAL� no

yes

no Check output 24V-A of power supply board

Replacing U13

no

Testing 1VPP signal of TP1, TP2, TP3.

yes Replacing CPU board

Check if PIN2 1VPP signal and noise wave of P32? yes Check if PIN56 15.734KHz sync signal of U29? no Replacing U29

no

Replacing TUNER202

yes

2

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