
Problem
Analyze and
Identify the
Causes
Solutions
1.2.2
Does not work or one channel no sound
Defective
audio cable
Broken or
short circuit
Defective IC
U1 or U2
Does not work or
one channel no sound
Defective VR3
Defective IC
U1 or U2
Replace
defective VR
Replace defective IC
1.2.3
Noise
Problem
Analyze and
Identify the
Causes
Solutions
Noise
Page 7/17
Version:
.0
2
G
uide
S
ervice
Replace
audio cable
Check solder
points on PCB
and resolder
defective one(s)
Check and replace
defective IC
SP-HF1100X