KYE Systems Corp. Genius SW-Flat2.1 800, Service Manual

Page: 8 / 16

Service Guide
SW-Flat2.1 800
Version : 1.0
Page 8 of 16
1.2.2 Power LED (indicator) no light
Problem
Solutions
1.2.3 Volume , Bass no function
Problem
Solutions
Power LED (indicator) no light
Power switch or LED
defective
Defective D2~D5,
SW1 , R15 , U4
C34 , C35 , C36
wired control cable
AC cord of adaptor
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 VR2
Bass: Defective VR1
Check solder points on PCB
Analyzer and
Identify the Causes
Check and Replace defective
components