Service Guide
SP-i350
Version : 1.0
Page 8 of 15
1.2.2
Power LED (indicator) no light
Problem
Solutions
1.2.3 Volume no function
Problem
Solutions
Power LED (indicator) no light
Power switch or LED defective
Defective,
IC3
DC cord of transformer
disconnected or defective
Re-solder or replace
defective component(s)
Analyzer and
Identify the Causes
Volume no function
Broken or short circuit
Defective IC1
& nearby
components.
Check solder points on PCB
Analyzer and
Identify the Causes
Check and Replace defective
components
