Service Guide
SW-HF 5.1 5050
1.2.10. LED
indicators
abnormal
Problem
Analyze and
identify the
causes
Solutions
Version 1.1 Page 16 of 31
LED indicators no light
1. Defective, dry-soldered, or broken
SW-HF5.1 5050 CON
PCB;
2. LED1, IC2, IC1 damaged
3. R1
,
R2
,
R3
,
R4
,
R5
,
R6
,
R8
,
R9, R10
,
R7 in SW-HF5.1
5050 CON PCB
Check and replace