Sony BDP-S186 - Page 88

BDP-BX18/S185/S186
9-4
Audio section flowchart
Audio does not sound right
No
Video is output properly
No
To Video section flowchart
To Main flowchart
Yes
Is the drive operating properly?
No
To Drive flowchart
Yes
Is each power supply supplied to the AUDIO
Block?
No
To Power Supply (System) flowchart
IC306 pin3:
3.3V
Yes
Only Analog 2ch L/R Audio affected?
No Only Digital Audio (HDMI,
Coax)
affected?
No
Replace the MB board
Yes
Yes
Is there HDMI output?
No
Replace the MB board
Is there Coaxial output?
Is there audio system digital signal input to
IC902?
IC902 pin1: A
LO_R
IC902 pin10:ARO_R
No
Replace the MB board
Yes
Are control signals input to IC902?
IC902pin7: MUTE
No
Replace the MB board
Yes
Is there a problem with mount condition of
IC902
No
Replace IC902 or replace MB board
Check output resistor/capasitors (R922,R923,C920,C918)
No