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Service Guide
SW-HF 5.1 5005
1.2.6 Woofer no sound
Problem
Analyze and
identify the
causes
Solutions
-
Version 1.1 Page 12 of 30
PCB
dry-soldered,
broken, or
short circuited
Defective
connection of
sub speaker
cables and
jacks, or
defective
speaker
cables, jacks
or woofer
1. Defective IC1, IC2 or components
relating to IC1 and IC2 on SW-HF5.1
INPUT PCB
2. Defective IC6 or components relating to
IC6 on SW-HF5.1 AMP PCB
3. Defective IC1, IC2 on
SW-HF5.1
SWAMP PCB
4.
Defective VR4 or components relating
to VR4 on SW-HF5.1 CON PCB
Repair
Reconnect
or replace
Check and replace defective IC
or components
Defective
connection of
woofer
audio cables,
or JACK
disconnected
from PCB or
defective
Reconnect
or replace
Woofer no sound