Intek M-490 Plus - Page 7

Model No: 3390 Drawring No:
Customer :
Title
M-490 Plus
Rev,Date:
No modulation
•
Defective microphone.
•
Poor audio output and defective modulation
microphone amplifier components (IC103).
•
Defective microphone connector components.
•
Defective ALC circuit D413, D414.
•
Replace
•
Replace the defective
components.
•
Replace
•
Replace the defective
components.
LCD meter does
not work
•
Defective D5.D3
•
Defective IC101.
•
Defective RV101.RV202
•
Replace
•
Replace
•
Replace
LCD display does
not work
•
Defective RED wire fuse.
•
Defective IC101, Q415.
•
Replace
•
Replace
Channel selector
does not work
•
Defective IC101, SW105.
•
Replace
EMG CH9.19
does not work
•
Defective EMG SW.
•
Defective IC101.
•
Replace
•
Replace
Created by: Approved by: Rev.No:
For Stage: Release Date: Page: 7 / 61