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Speaker System
FH2
LG FH2 Service Manual
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1-5
HIDDEN KEY MODE
HIDDEN MODE
AVAILABLE
STATUS
ENTRANCE
KEY(Audio)
EXIT KEY
DISPLAY
RESULT
Factroy Reset
POWER ON
STATUS
MIC not connected
Custom
code
:
2C2C+0xF0(LG MP2)
b + B.Skip for 3s
Auto power off
SW version 2s
--> option 2s
--> E2P CLEAR
Initialize
Version Check
POWER ON
STATUS
MIC not connected
MIC + Function
for 3s
MIC + Function
for 3s
01140
OP 1F
Version move :
|<<, >>|
SYSTEM INITIAL
POWER ON
STATUS
MIC not connected
Voice canceller
+ F.Skip for 3s
Auto power off
“E2PCL”
EEPROM initialize
EEPROM (Backsup
data) Clear
OPTION EDIT
POWER ON
STATUS
MIC not connected
Voice canceller
+ REPEAT for 3s
Voice canceller
+ REPEAT for 3s
OP--10
* Option Editer
- move : |<< , >>|
- change value :
sound effect
- save : play/pause
key
- exit : same to
ENTERANCE KEY
APD Test Display
POWER ON
STATUS
MIC not connected
Voice canceller
+ Play/Pause for 3s
Voice canceller
+ Play/Pause for 3s
MM:SS (AUX mode
--> HH:MM:SS)
* Display APD Timer
HH=hour,
MM=min, SS=sec
Sound BYPASS
POWER ON
STATUS
MIC not connected
MIC + F.Skip
for 3s
SOUND EFFECT
key
Display “BYPAS” 3s
Changed EQ
to BYPASS
* If you change Main PCB or Flash memory, please set appropriate value of option for region with option
edit hidden key.
Option Value
Region
0x5F
EU, Russia
0x3F
North America, South America
0x1F
Aisa, Africa, ETC.
5
7
Table of Contents
Section 1 Summary
3
Table of Contents
3
Product Safety Servicing Guidelines for Audio Products
4
Servicing Precautions
5
General Servicing Precautions
5
Insulation Checking Prodedure
5
Electrostatically Sensitive (Es) Devices
5
Hidden Key Mode
6
Program Download & Update Guide
7
Specifications
8
Section 2 Cabinet & Main Chassis
10
How to Disassemble the Battery
11
Disassembly & Assembly Instructions
12
Disassembly Guide
12
Assembly Structure and Method
13
Exploded Views
16
Cabinet and Main Frame Section
16
Packing Accessory Section
17
Section 3 Electrical
18
One Point Repair Guide
19
Power Problem
20
Speaker no Sound
23
Portable Function Doesn't Work
24
Bt Function Doesn't Work
25
Electrical Troubleshooting Guide
26
System Power Supply on Smps Board
26
Power
29
Button Operation
30
Bt Operation
31
Audio Output
33
Waveforms of Major Check Point
35
System Part-1 (X-Tal)
35
System Part-2 (I2S Signal)
36
System Part-3 (I2C Signal)
37
System Part-4 (Pwm Signal)
38
System Part-5 (Battery Input - Ac off Status)
39
Wiring Diagram
40
Block Diagrams
41
System Block Diagram
41
Power Block Diagram
42
Circuit Voltage Chart
43
Ics
43
Connectors
43
Printed Circuit Board Diagrams
44
Smps P. C. Board Diagram
44
Main P. C. Board Diagram
46
Front P. C. Board Diagram
47
Fm P. C. Board Diagram
48
Volume Control P. C. Board Diagram
48
MIC P. C. Board Diagram
49
Other manuals for LG FH2
Owner's Manual
21 pages
Simple Manual
4 pages
User Manual
5 pages
5
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LG FH2 Specifications
General
Output Power
50W
Battery Life
Up to 15 hours
Connectivity
Bluetooth, USB, AUX
Power Source
Rechargeable Battery
Type
Portable Speaker
Features
FM Radio
Impedance
4 Ohms
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