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PHILIPS DVD728/051
Service Manual


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

Description of PHILIPS DVD728/051 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 24 (click to view)
EN 24
5.3.4

5.

DVD728-731 /0X1

Service Hints, Trouble Shooting and Fault Finding

No Sound

B When read disc, Laser ON OK? Signal LDO1 and LDO2  is normal? Y Y Voltage of TP22 &TP24 OK? N Check the peripheral circuit of two transistor (item 7620 & 7621) Check the peripheral circuit of MT1366 Check the peripheral circuit of two transistor (item 7620 & 7621)

N

N

Load a disc?

N

Laser off Y

Check the circuit to connect LOADER OPU maybe damaged

Y

Focus On ok?

N

Any signal on pins A B C D E F of MT1366 Y Signal FEO (pin18 of MT1336) correct?

N

Check the circuit between Loader and MT1336

N

Check the peripheral circuit of MT1336

Y

Y Check the circuit from Pin18 of MT1336 to Pin205 of MT1379

Disc ID correct?

N

Signal of Pin 19 (RFL) of MT1336 normal? Y Check the circuit from Pin19 of MT1336 to Pin206 of MT1379

N

Check the peripheral circuit of MT1336 and itself.

Y

Spindle on OK?

N

DMSO (pin18 of MT1379) normal? Y Signal SP+  &  SPcorrect?

N

Check MT1379 and its peripheral circuit.

N

Check BA5945 (motor driver) and its peripheral circuit

C

Y Check the connection between spindle driver and BA5945

CL 36532024_008.eps 210303

Figure 5-4 No Sound

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