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