Service Guide
SW-HF 2.1 1800K
1.2.8 MIC no sound or low sound
Problem
Analyze and
identify the
causes
Solutions
Version 1.0 Page 14 of 24
MIC 1 no sound or low
sound:
IC2, JACK2 ( their related
components) in MIC
PCB, or VR2 defective
Check and replace
IC1/IC5 and its related
components IN MIC
PCB defective,
especially R34
，
ZD1
，
CC1 or CC8
MIC 2 no sound or low
sound:
IC2, JACK3 (their related
components) in MIC
PCB, or VR1 defective
Check and replace
Check and replace
MIC no sound or low sound
Summary of Contents for Genius SW-HF 2.1 1800K
Page 1: ...Service Guide SW HF 2 1 1800K SERVICE GUIDE KEY SYSTEM CORP Version 1 0 Page 1 of 24...
Page 18: ...Service Guide SW HF 2 1 1800K Version 1 0 Page 18 of 24 Chapter 3 Block diagram...
Page 19: ...Service Guide SW HF 2 1 1800K Subwoofer Version 1 0 Page 19 of 24 Chapter 4 Exploded view...
Page 20: ...Service Guide SW HF 2 1 1800K Satellite Version 1 0 Page 20 of 24 Chapter 4 Exploded view...
Page 23: ...Service Guide SW HF 2 1 1800K Chapter 7 Schematic diagram SW HF 2 1 1800K AMP PCB...
