KYE Systems Corp. Genius SW-G2.1 1200, Service Manual

Page: 11 / 21

Service Guide SW-G2.1 1200
Version No. 1.0 Page
11 of 21
1.2.5 Noise and Current Noise
Noise and Current Noise
1. Switching power supply
panel damaged.
2. Filter capacitor of power
supply C14 and C15
defective or damaged
1. Integrated circuit U1, U2, U3
U4, U5 and U6 damaged or
copper sheet broken
2. DZ1 and DZ2 damaged.
Inspect/ repair/ replace Inspect/ repair/ replace
1. Poor contact of earthing line
of CON3-CON6 and
CON5-CON4 signal lines
2. RCA: copper sheet of earthing
line of JK2 broken
3. Potentiometer defective or
damaged
Replace/ repair