KYE Systems Corp. Genius SW-S2.1 350, Service Manual

Page: 8 / 15

Service Guide
SW-S2.1 350
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 D60~D63,
VR1, Power, R60, R61
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 Volume: Defective VR1, VR2, R10, R20, C12,
C15, C22, C25, U1, U2, U3
Bass: Defective VR2, R30~R36, R39~R40,
C40-41, C44~C45, U1, U3
Check solder points on PCB
Analyzer and
Identify the Causes
Check and Replace defective
components