KYE Systems Corp. Genius SW-Flat 2.1 850, Руководство по обслуживанию

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Service Guide
SW-Flat 2.1 850
Version : 1.0
Page 8 of 15
1.2.2 Power LED (indicator) no light
Problem
Solutions
1.2.3 Volume no function
Problem
Solutions
Power LED (indicator) no light
Power switch or LED defective
Defective D1~D4,
VR1 POWER , R10
AC cord of transformer
disconnected or defective
Re-solder or replace
defective component(s)
Analyzer and
Identify the Causes
Volume no function
Broken or short circuit Volume: Defective VR1,VR2,, R3-6, R11-14,
C17-18, U1, U3
Bass: Defective VR2, R19-20, C28-29, Q1, Q2,
U1, U3
Check solder points on PCB
Analyzer and
Identify the Causes
Check and Replace defective
components