Service Guide
SW-HF 5.1 5005
1.2.2 no sound
Problem
Analyze and
identify the
causes
]
Solutions
Version 1.1 Page 8 of 30
Resolder or
replace
PCB damaged,
dry-soldered or
short-circuited
Assembled line
defectively
connected
1. Defective IC2 on
SW-HF5.1 CON PCB
2. Defective IC1, IC2 SW
-HF5.1 INPUT PCB
3. Defective IC1, IC2, IC3, IC4, IC5, IC6, IC7, IC8,
IC9, R28, R29, R52, EC18, EC19, EC20 on
SW-HF5.1 AMP PCB
4. Defective IC1
，
IC2
，
R15
，
R16 on
SW-HF5.1
SWAMP PCB
Re-connect
or replace
Check and replace defective
IC or components.
no sound
