KYE Systems Corp. Genius SW-5.1 1505, Service Manual

Page: 8 / 17

Service Guide
SW-5.1 1505
Version : 1.0
Page 8 of 17
1.2.3 Power LED (indicator) no light
Problem
Solutions
1.2.4 Volume , Bass no function
Problem
Solutions
Power LED (indicator) no light
Power switch or LED
defective
Defective D2~D5
POWER , R2 , LED
wired control cable
AC cord of transformer
disconnected or defective
Re-solder or replace
defective component(s)
Analyzer and
Identify the Causes
Volume , Bass no function
Broken or short circuit
Volume: Defective VR1
Bass: Defective VR2
Check solder points on PCB
Analyzer and
Identify the Causes
Check and Replace defective
components