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SHARP 28JW74H
Service Manual


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

Description of SHARP 28JW74H 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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This is a very good quality print (scan) of the original SONY service manual. The original from Sony is on very thin paper. Nevertheless it is very clear and sharp and excellent readable. I'm very satisfied to have now this rare document. I've looking for it many years (infrequent). It contains very detailed circuit diagrams, exploded views, part lists, PCB view with good readable connection lines. Very recommended.
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A complete manual with all the needed details of calibrations and service instructions about the radio receiver. A big deal. Many thanks !

Text excerpt from page 12 (click to view)
28JW-74H
Contrast Adjustments Three types of contrast levels can be varied as listed below: ⢠TELETEXT MIX MODE CONTRAST ⢠TELETEXT CONTRAST ⢠OSD CONTRAST Use the volume up/down buttons to adjust to a suitable level, then. It is not necessary to press the stand-by button to store, data are memorized by exiting the Service Mode. DVCO Adjustment (PAL) Carry out the DVCO Adjustment (PAL) as shown below: 1. Receive a Philips pattern signal. 2. While in the DVCO ADJUSTMENT (PAL) menu, press the stand-by button. 3. The adjustment will be carried out automatically and stored. DVCO Adjustment (NTSC) No adjustment required. AGC Adjustment To correctly align the Automatic Gain Control, follow the procedure outlined below: 1. Tune the set into a pattern generator on CH12. 2. Adjust the signal strength of the pattern generator to 59dB/µV (75â¦). 3. Enter the Service Mode. 4. Enter the AGC Adjustment menu. 5. Press the stand-by button on the remote control. 6. The adjustment will be carried out and stored automatically.

Auto Installation On/Off To return the receiver to the original Auto Installation mode, using the volume up or down button, set the Auto Installation On/Off to On. This setting is automatically stored and when the receiver is turned on the next time it will start up in Auto Installation mode.

LED FLASHING CODES
If the TV set does not work and the power indicator is flashing, follow the sequence according to the information below, as a guide to fault finding. 1. Unable to read or write into NVM: 66% ON, 33% OFF twice and OFF for a second.

On

Off

2. MSP failure: 66% ON, 33% OFF for three times and OFF for a second.
On Off

3. VCT failure: 66% ON, 33% OFF for four times and OFF for a second.
On Off

12

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