Super Anleitung. Ordentliche Auflösung. Das ganze noch in Deutsch wäre zu schön. Alle Datenblätter sind sauber Kopiert und alle Leitungswege sind sauber ausgeführt
About the service it's very fast and reliable. About the manual the quality is high enough to read even the tiniest details on the wiring diagrams so you can't ask much more than that, let it alone for a manual of a product from 20 years ago. Thank you, very satisfied.
The downloaded quality was as good as the orignial
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
