Home
LG
Stereo System
NS9550F
LG NS9550F Service Manual
4
of 1
of 1 rating
85 pages
Give review
Manual
Specs
To Next Page
To Next Page
To Previous Page
To Previous Page
Loading...
3-32
ELECTRICAL TROUBLESHOOTING GUIDE
A
YES
YES
YES
POT. IN
Check MIC board.
Replace IC202.
Check IC501.
NO
NO
NO
IC202
Pin21, 22 POT. IN input signal
OK?
IC202 Pin41
ADC/MIC_data output signal
OK?
IC202
Pin42, 43, 44 I2S input signal
OK?
TUNER
Check IC501.
Replace IC202.
Check +3.3 V of TU500.
IC202
Pin42, 43, 44 I2S input
signal OK?
IC202
Pin41 ADC data output
signal OK?
NO
NO
NO
TU500
TUNER_L/R output
signal OK?
YES
A
IC202
Pin23, 24 TUNER_L/R input
signal OK?
NO
YES
YES
YES
52
54
Table of Contents
Table of Contents
3
Servicing Precautions
4
Esd Precautions
6
Hidden Key Mode
7
Service Information for Eeprom
8
Program Download & Update Guide
9
Specifications
13
Exploded Views
16
Cabinet and Main Frame Section (Cm9550)
16
Mechanism Deck Section (Dp17Tm2)
17
Packing Accessory Section
18
Speaker Section
19
One Point Repair Guide
23
Power
23
Booting When Power on the Set
25
Vfd Is Not Displayed When Power on the Set
26
Booting in CD/Usb Function
28
Operation of MD (Driving the Servo Motors)
33
Sound
38
Audio Output Is Small or no Audio Output
43
Power on (Standby Led Is Blinking)
44
Speaker no Audio
45
Electrical Troubleshooting Guide
46
Power Supply on Smps Board
46
System Part
50
Audio Part
51
Lighting (Woofer Speaker)
56
Waveforms of Major Check Point
57
Wiring Diagram
62
Block Diagrams
63
Smps Block Diagram
63
Main System Block Diagram
64
Main Power Block Diagram
65
Circuit Diagrams
66
Smps - Power #1 Circuit Diagram
66
Smps - Power #2 Circuit Diagram
67
Main - CD Dsp Circuit Diagram
68
Main - Rf / Servo Circuit Diagram
69
Main - Adc / Pwm Circuit Diagram
70
Main - Amp Circuit Diagram
71
Front Volume Circuit Diagram
72
MIC & Portable Circuit Diagram
73
Front Speaker Main Circuit Diagram
74
Front Speaker Sub Circuit Diagram
75
Woofer Speaker Main Circuit Diagram
76
Woofer Speaker Sub Circuit Diagram
77
Circuit Voltage Chart
78
Connectors
78
Capacitors
78
Printed Circuit Board Diagrams
79
Smps P.C.board (Top View)
79
Smps P.C.board (Bottom View)
80
Main P.C.board (Top View)
81
Main P.C.board (Bottom View)
82
Front Volume & MIC & Portable P.C.board (Top View)
83
Front Volume & MIC & Portable P.C.board (Bottom View)
84
Front Speaker Main/Sub & Woofer Speaker Main/Sub P.C.board (Top View)
85
Front Speaker Main/Sub & Woofer Speaker Main/Sub P.C.board (Bottom View)
85
Other manuals for LG NS9550F
Owner's Manual
43 pages
Simple Manual
4 pages
4
Based on 1 rating
Ask a question
Give review
Questions and Answers:
Need help?
Do you have a question about the LG NS9550F and is the answer not in the manual?
Ask a question
LG NS9550F Specifications
General
Brand
LG
Model
NS9550F
Category
Stereo System
Language
English
Related product manuals
LG NS9550W
43 pages
LG NS9740
44 pages
LG NS8350F
41 pages
LG NL98F
48 pages
LG NP8740
58 pages
LG NP8340
55 pages
LG NA9740
62 pages
LG Music Flow NP8340 (H3)
61 pages
LG ON5
46 pages
LG CM4550
38 pages
LG OM7550
89 pages
LG MICRO Hi-Fi SYSTEM
63 pages
To Next PageTo Next PageTo Previous PageTo Previous Page
Loading...
Need help?
General
