KYE Systems Corp. Genius SW-U2.1 200, Service Manual

Page: 8 / 18

Service Guide SW-U2.1 200
Version No. 1.0 Page
8 of 18
1.2.2 No Sound
No Sound
1. Short circuit, open circuit
and no power of PCB
2. Connecting line damaged
or defective, short circuit
and open circuit,
(COND3). (JK1)
3. Signal input line
connected improperly/ no
signal
1. Element of sound channel unit
of PCB damaged, and U1, U2,
RR1, horn lead and horn
damaged
Inspect/ repair Inspect/ repair/ replace
1. Potentiometer VR1 damaged
2. Plug of line panel separating
from and poorly connecting
with the socket
3. 9P FPC fell/ connected
improperly
Inspect/ repair