KYE Systems Corp. Genius SP-U115, Service Manual

Page: 8 / 17

Version No.：1.0 Page:8 of 17
Service Manual
SP-U115
1.2.2 No sound
无声
1.PCB板短路/断路/无
电引起；
2.连接线损坏或本身不
良，短路/开路
CON1/CON2/CON3 1.J2/J3/D10/Q2本身不
良或损坏；
2.电位器VR1损坏；
3.线路板插头与插座松
脱，接触不良；
4.耳机插座JK1损坏或者
本身不良。
1.PCB板声音通道单元元
件损坏,U1，
JK1,C11,VR1,J2,J3，
Q1,Q2,Q3,D10喇叭引
线，喇叭坏；
No sound
1.It is due to PCB
short circuit /open
circuit/no
electricity;
2.The connecting
wire is inferior or
damaged, short
circuit/open circuit
CON1/CON2/CON3 1.J2/J3/D10/Q2 is bad
or damaged;
2.Potentiometer
VR1 is damaged;
3.PCB plug becomes
loose, or in poor
contact.
Inspect/repair
Inspect/repair/replace
1.PCB sound channel
unit elements are
damaged. Speaker and
lead of U1，U2，VR1
are damaged.
Inspect/repair