Download TROUBLESHOOTING - Page de test

NO SOUND
(PICTURE OK)
(No NICAM or FM Sound)
(No AM Sound)
NO
Check whether Sound
system of MENU OSD is
correct or not
Check the Audio signal of
pin25 of IC604 normal
Check/Replace IC604
Yes
Correct
Check the Audio signal of
pin44 of ICN01 normal
Yes
Incorrect
Set correct Sound system
Is the SIF signal of pin24
of IC604 normal
NO
Check/Replace IC101
NO
Yes
Are the Audio signal of
pin24, 25 of ICN01 normal?
Check AM line
Check/Replace XN01,
ICN01
Yes
NO
Are the Audio signal of
pin1, 9 of IC601 normal
Yes
NO
NO
Check RO LO lines.
Check the voltage of
Q601 Base.
0V
Check/Replace Q601,
IC101, Q602, D601,
D602, R612, R614
Are the Audio signal of
pin4, 6 of IC601 normal?
Yes
NO
Check the voltage of pin7
of IC601
NO
Check/Replace C614, C615,
D603, D604, Speaker
Yes
Check/Replace IC601
Check/Replace F802,
D814, L801