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1.2.1 No sound and power LED (indicator) unlight
Attention
Please follow the numbered sequence marked withing parenthesis given in individual
flow chart, in that this is the best-recommended sequence to rectify the problems.
Problem
No sound and
power LED (indicator) unlight
Analyze and
Identify the
Causes
Solutions
Page 7/17
Version: 1.0
G
uide
S
ervice
Defective D1,D2,D3
D4,D5,D6,D7,D8,U12
Defective SW1
Defective
transformer
Replace defective
transformer
Replace defective
one (s)
Replace defective
SW1
SW-HF5.1 4000