Service Guide
SP-F350
Please follow the numbered sequence marked within parenthesis given in individual
Flow chat, in that this is the best-recommended sequence to rectify the problems.
1.2.1 L/R channels no sound
Problem
Analyze and
Identify the Causes
Solutions
Version 1.0 Page 7 of 15
L/R channels no sound
Broken or short circuit
Check solder points on
PCB
Defective
U1,VR1,VR2,PhoneJK
C4,C14,C9,C10,C16,C
7,C17,R5,R15 ,R2 ,R3
, R1,R11
Speaker cable dis-connect or
speaker damaged
Re-connected speaker cable
or replace defective speakers
Check and replace
defective IC or
components
