Service Guide
SW-J2.1 1200
1.2.2 No
sound
Problem
Analyze and
identify the
causes
]
Solutions
Version 1.0 Page 8 of 23
No sound
PCB short-circuited,
dry soldered or broken;
Or G6 plug of the
wired-control
defectively connected
or damaged
JK2 in
YM9660 2.1L AMP
PCB defective
VR2 in YM9660 2.1L CON
PCB damaged or PCB
copper foil broken
Repair or replace
Repair or replace
Or caused by the following defective
components in YM9660 2.1L AMP
PCB: IC1
,
IC4
,
IC3
,
IC2
,
Q1
,
ZD1, ZD1
,
JK1
,
EC6, R21
,
EC6
,
JK1
,
SP1
Repair, resolder or
replace
Summary of Contents for Genius SW-J2.1 1200
Page 1: ...Service Guide SW J2 1 1200 SERVICE GUIDE KEY SYSTEM CORP Version 1 0 Page 1 of 23...
Page 16: ...Service Guide SW J2 1 1200 Version 1 0 Page 16 of 23 Chapter 3 Block diagram...
Page 17: ...Service Guide SW J2 1 1200 Subwoofer Version 1 0 Page 17 of 23 Chapter 4 Exploded view...
Page 18: ...Service Guide SW J2 1 1200 Satellite Version 1 0 Page 18 of 23 Chapter 4 Exploded view...
Page 19: ...Service Guide SW J2 1 1200 Wired control Version 1 0 Page 19 of 23 Chapter 4 Exploded view...