Philips DVD580M Service Manual page 24

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