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SAMSUNG HTDM550
Service Manual


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

Description of SAMSUNG HTDM550 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 69 (click to view)
3. PickUp Head Initial Postion
PickUp Head Initial Postion 1. Move Pick Up Head to inner diretion until pin5 of MJ4="L" 2. If pin5 of MJ4="L", then move Pick Up Head to outer diretion for a short time. 3. Ture On the Laser of Pick Up Head to judge that disc is presence or not.
3

Does Pick Up Move to inner direction?

N

Is pulse of 2.5 +-2.5V developed at pin3,4 of MJ4?

Y

Check connection between PCB and MECHA

N Y Check peripheral circuit of DU3 and MU9 Check BUS line between DU3 and DU5 Check connection between PCB and MECHA

Is pulse of 2.5 +-2.5V developed at pin13 of DU3?

Y

N

Does Pick Up Move to out direction again? Y Does Laser Turn On? N

N

Is pin5 of MJ4 = "L" appeared? Y
Check line between DU3 and MJ4

N

OK

Check voltage at pin17 of RCN1 is about 2.5V? N
Check BUS line between RU1 and DU3,DU3 and DU5

Y
Replace Pick Up Head

Samsung Electronics

9-11

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