KYE Systems Corp. Genius SW-M2.1 350, Руководство по обслуживанию

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1.2.2No sound
Version No.：1.0 Page:8 of 20
Service Manual
SW-M2.1 350
No sound
1. The PCB is short-
circuited/broken or
has no supply;
2. The connection
wire is damaged or
defective, short-
circuited/open
(CN2/CN4/CN5). 1. The J1/J2 is
defective or damaged;
2. The potentiometer
VR1is damaged;
3. The circuit board
is connected loosely,
causing bad contact;
4. The earphone JACK1
is damaged or
defective.
Check/repair
Check/repair/replace
The audio processor
unit of the PCB is
damaged; IC1, IC2,
JACK1, VR1, J1, J2
speaker lead/speaker
is damaged.
Check/repair