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- 4 -
1.3
Defective phenomenon and solving method.
1.3.1 Main issue
:
a. LED light off.
b. No output.
c. System down.
d. The volume control is random.
e. Noise and distortion
f. No output on earphone.
g. Others
1.3.2 Root cause analysis and related solving method
a. LED light off.
b. No output
ʳ ʳ
No signal
Mechanical
PCBA
Replace LED
Burnt out
Problem Analysis
Root cause
Counter measure
LED is
broken
The copper foil is
chapped
Replace LED
Replace ribbon wire
The ribbon wire is
broken
transducer
Root cause
Counter measure
Problem Analysis
Audio cable
No output
PCBA
Signal cable failed
Audio cable
Replace Audio cable
transducer failed
Replace transducer
JACK board
Main board
Repair the
chapped position
Earphone JACK failed
IC(U2) failed
Replace earphone Jack
Replace IC
Содержание Genius SP700
Страница 1: ...1 KYE System Corp LTD Maintenance Manual...
Страница 14: ...14 4 2 Main unit assembly explode diagram...
Страница 15: ...15 Satellite assembly explode diagram...