Service Guide
SP-HF2.0 800
Version : 1.0
Page 8 of 15
1.2.2 Power LED (indicator) no light
Problem
Solutions
1.2.3 Volume , Treble , Bass no function
Problem
Solutions
Power LED (indicator) no light
Power switch or LED defective
Defective,D5-8,
ZD1,ZD2,r21,R44,
C24,C27
Dc cord of transformer
disconnected or defective
Re-solder or replace
defective component(s)
Analyzer and
Identify the Causes
Volume , Treble ,Bass no
function
Broken or short circuit
DefectiveU1,VR1,VR2,VR3
,R5-12,C3-10,C13-14
Check solder points on PCB
Analyzer and
Identify the Causes
Check and Replace defective
components