KYE Systems Corp. Genius SP-HF360A, Service Manual

Page: 11 / 21

Service Guide
SP-HF360A
1.2.5 Noise
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 11 of 21
1. Check
D1
，
D2
，
D3
，
D4
，
EC6
dry-soldered or not
2. The power supply of each IC is
normal or not;
3. PCB dry-solder or broken
1. Driver units damaged
2. Or caused by vibration
from too long lead wire of
driver units
EC3
，
R25
，
ZD2
，
R29 in
PCB defective
Repair or replace
Check and replace Replace
Noise