KYE Systems Corp. Genius SP-i220, Service Manual

Page: 8 / 15

Service Guide
SP-i220
Version : 1.0
Page 8 of 15
1.2.2 Power LED (indicator) no light
Problem
Solutions
1.2.3 Volume , 3D no function
Problem
Solutions
Power LED (indicator) no light
Power switch or LED
defective
Defective
D1~D4, R14,
C14, C15, SW1
Ac adaptor disconnected
or defective
Re-solder or replace
defective component(s)
Analyzer and
Identify the Causes
Volume , Tone no function
Broken or short circuit Defective U1, VR, SW2, R8
Check solder joints on PCB
Analyzer and
Identify the Causes
Check and Replace defective
components
Check the
ac adaptor