KYE Systems Corp. Genius SP-S120, Service Manual

Page: 8 / 15

Service Guide
SP-S120
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 diode,
SW, R15, C14, C15,
Ac 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 VR1, IC
Check solder points on PCB
Analyzer and
Identify the Causes
Check and Replace defective
components