Sony KDS-R50XBR1 Training Manual page 26

Missing or Distorted
Replace
ASU/DSU Assembly
Go to Appendix for
Part # Table A-1 & A-2
Replace
G-Board
A-1138-898-A
Replace
G-Board
A-1138-898-A
TVP-21
G
Audio
(Speaker Outputs)
Is Audio
No
Missing or Distorted
on All Inputs ?
1,2, ---,i-Link.
Yes
Check
Audio Output
Var/Fix
No Is Audio
Present?
Yes
Check
Power Supply voltage
at
ASU-Board CN1/pin 10
"Before Shutdown"
No Is 3.3V
Present?
Yes
Check
Power Supply voltage at
ASU-Board CN501/pin 1
"Before Shutdown"
No
Is 6.5V Yes
Present?
2005 SXRD Missing or Distorted Audio
All Inputs :
Audio 1,2,3 (Composite & S-Video)
Audio 4, 5 (Component Video )
Audio 6, 7 (HDMI)
Audio 8 (PC IN)
ATSC, NTSC, SUB-NTSC Tuners (RF)
Memory Stick
i-Link
NOTE: Confirm all
connections between
circuit boards before
replacing
Check
Power Supply voltage at
G-Board CN6408/pin 1
"Before Shutdown"
Replace
Is 14V No
G-Board
Present?
A-1138-898-A
Yes
Check
Speaker Resistance
CN3003 &
Connections on K-Board
CN3003/pins 1 & 2 = 10.6 ohm
CN3003/pins 3 & 4 = 10.6 ohm
10.6 ohms Repair or Replace
No
&
Connections
OK?
NOTE: There are two
Yes
speakers per side. The two
part numbers shown here
Replace
are for the two speakers.
K-Board A-1138-895-A
or
AK-Board A-1123-095-A
Troubleshooting Flowchart G
NOTE: Reference Chapter 6, Pages 68 - 70
for detailed flowchart step descriptions
Check
External Devices
and
Connections
Swap Devices and
connections
Good
Check
Individual
Audio Inputs
No Audio
Inputs 1, 3, 4 or 5
**ONLY**
No Audio
Input 2
**ONLY**
No Audio
Inputs 6 & 7
**ONLY**
No Audio
Sub-Tuner
**ONLY**
Speakers
1-826-236-11
No Audio
1-826-237-11
NTSC Tuner ,
ATSC Tuner ,
Memory Stick,
or i-Link
**ONLY**
Troubleshooting Flowcharts
TV OK
Bad Repair External
Devices or
Connections
Replace
ASU/DSU Assembly
Go to Appendix for
Part # Tables A-1 & A-2
Replace
H3-Board
A-1123-102-A
Replace
PD-Board
A-1152-716-A
Replace
ASU/DSU Assembly
Go to Appendix for
Part # Tables A-1 & A-2
Replace
Q-Box Module
A-1058-689-A
23