Hitachi 42PD8900TA Service Manual page 42

[PW3 Sound Circuit]
No sound of INPUT(RGB)
AUDIO Stereo mini
(JF801)
Are waveforms at
pin 2,4,5,6 of PAF1?
No
Are waveforms at
pin 45,47 of PFM1(L,R)?
No
Are waveforms at
pin 50,52 of PMF1(L,R)?
No
No
(No sound of INPUT(RGB)
AUDIO Stereo mini
(JF801))
Are waveforms at
pin 14,5 of IC808?
No
Check around
IC808,JF801
42PD8900TA
No sound of INPUT(HDMI)
AUDIO Stereo mini
(JF800)
Yes
Check
SOUND PWB
Yes
Check
FC PWB
Yes
(No sound of INPUT(HDMI) AUDIO
Yes
Check
IC808
42
Are waveforms at
pin 45,47 of PMF1(L,R)?
No
Are waveforms at
pin 43,45 of I201(L,R)?
No
Are waveforms at
pin 59,61 of I201(L,R)?
No
Are waveforms at
pin 13,3 of I203(L,R)?
No
Are waveforms at
pin 14,5 of I203(L,R)?
No
Check around
I203
No
Stereo mini
(JF800))
Are waveforms at
pin 11,4 of IC808?
No
Check around
IC808,JF800
Yes
Check around
PFM1
Yes
Check around
PMF1
Yes
Check
I201
Yes
Check around
I201
Yes
Check
I203
Yes
Check
IC808