Sony KDS-50A2000 Training Manual page 51

NOTES:
1) Except for the Lamp LED all flash patterns will
occur on the Front Panel
Red "Power" LED
2) All voltage are measured prior to unit shutdown
3) Reference Chapter 5, Pages 64 – 65 for detailed
flowchart step descriptions
(Audio Output)
CN6901/pins 4-6
*Before Shutdown
TVP-23
2006 SXRD-A Protection Mode Troubleshooting
7X Flash
Pattern
Is
Check
Audio heard No
Speakers &
before
Connections
Shutdown?
Yes
Do
Speakers
Check 6.5V at
Measure
8 ohms
?
Yes
Replace
Is voltage A1-Board
Yes
6.5V A-1205-146-A (50")
Present? A-1205-145-A (55")
A-1205-144-A (60")
No
Replace
G-Board
A-1186-654-A
Flowchart C4
C4
NOTE: Confirm all
connections between
Unit Shuts OFF
circuit boards before
RED LED
Flashing
8X Flash
Pattern
(OVP 6.5V)
Check 6.5V at
CN6901/pins 4-6
*Before Shutdown
voltage = 6.5V
(not >)
Replace
Present?
No
Speaker(s)
1-826-475-11
Replace
A1-Board
A-1205-146-A (50")
A-1205-145-A (55")
A-1205-144-A (60")
replacing
Is
Replace
No
G-Board
A-1186-654-A
Yes
PROTECTION MODE FLOWCHART C4
FIGURE 5-8
5. Protection Circuits
47