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Philips DVD580M Service Manual Page 24

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EN 24
5.
DVD580M
5.3.8
No Digital Out on Coaxial
No or abnormal Digital output from Coaxial terminal
terminal but Optical output is normal
Go
Check point : the Q501 on AV output board
Observe : check the BASE voltage is +3v4
Yes
Check point : Q501 on AV output board
Observe : check the transistor is damaged
No
Check point : R506 and R507 on AV output board
Observe : check the resistor is defected
No
Check point : C504 and C505 on AV output board
Observe : check if the capacitors is defected
5.3.9
POP Sound
High audio POP noise when switch ON and OFF the set
Go
Check point : the pin 13 of CN 1on decoder board
Observe : check the voltage switch to high when switch ON or
OFF the set
No
Check point : Q12 BASE terminal
Observe : check the present of low voltage
Yes
Solution : Replace Q12
Diagnostic Software, Trouble Shooting and Test Instructions
No
Yes
Yes
Yes
Figure 5-8
Yes
Yes
Figure 5-9
Solution : check the bias resistors
R501 and R504
Solution : replace the Q501
Solution : Replace the defected
resistor
Solution : Replace the defected
capacitor
CL 26532085-074.eps
Solution : check the transistor Q502
to Q507, replace the faulty transistor
Solution : check the pin 13 of U302
on front panel board
CL 26532085-068.eps
180702
180702

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Dvd580m/691Dvd580m/001

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