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LC-37X20E
Sharp LC-37X20E Service Manual
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LC-32X20E/S/RU, LC-37X20E/S/RU
2 – 13
3.
Remove the 2 lock screws
an
d detach the S
peaker L/R.
4.
Remove all the connectors from PWBs.
5.
Remove the R/C, LED Unit.
6
Speaker
R
Speaker
L
6
R/C,
LED
PWB
Wire
"RA"
from
OBON
R/C,
LED
PWB
Front
side
R/C,
LED
P
WB
Back
side
Pull
out
Wire
"RA"
from
bottom
1st,Set
R/C,
LED
PWB
Under
LIB
R/C,
LED
PWB
(with
wire)
Next,Push
PWB
hooked
#Set
PWB
to
gide
lib
surely
Wire
"RA"
Wire
"RA"
to
WH
22
24
Table of Contents
Default Chapter
1
Table of Contents
1
Service Manual
1
Before Returning the Receiver
2
Important Service Safety Precaution
2
Safety Notice
2
Employing Lead-Free Solder
3
Lead-Free Wire Solder for Servicing
3
Soldering
3
Using Lead-Free Wire Solder
3
Optional Accessory
4
Safety Precaution
2
Chapter 1. Operation Manual Specifications
4
Remote Control Unit
5
Operation Manual
5
TV (Front View)
6
TV (Rear View)
6
Attaching the Stand Unit
7
Inserting the Batteries
8
Using the Remote Control Unit
8
Cautions Regarding the Remote Control Unit
8
Troubleshooting
9
Dimensions
10
Chapter 2. Removing of Major Parts
11
(Lc-32X20E/S/Ru)
11
Remove All the Connectors from Pwbs
12
Remove the 2 Lock Screws
13
Removing of Major Parts (Lc-37X20E/S/Ru)
21
Adjustment Procedure
33
Adjustment Method after PWB And/Or IC Replacement Due to Repair
33
Chapter 3. Adjustment Procedure
33
Entering and Exiting the Adjustment Process Mode
34
Description of Display
34
Adjustment Process Mode Menu
35
Special Features
40
Lamp Error Detection
40
Function
40
Measures
40
Public Mode (Hotel Mode)
41
Starting the Public Mode
41
Exiting the Public Mode Screen
41
Set Value of the Public Mode
41
Basic Operation in the Public Mode
42
Operation after “RESET”
42
Setting Items
43
Volume Maximum Level
43
Volume Fixed
43
Volume Fixed Level
43
R/C Operation
44
Main Unit Operation
44
MENU Operation
44
ODS Display
44
Video Signal Adjustment Procedure
45
Mode Fixed
45
Entering the Adjustment Process Mode
45
RF AGC Adjustment
45
SECAM Adjustment
46
ADC Adjustment
46
White Balance Adjustment
47
DVI-I Adjustment
47
RGB Adjustment
47
Confirmation Item
49
Initialization to Factory Settings
49
Upgrading the Software
49
Troubleshooting Table
51
Power Unit Operation Check
51
Chapter 4. Troubleshooting Table
51
The Sound Is Not Emitted from Speaker Though the Picture Has Come out
52
No Sound (During the Reception of TV(ANALOG) Broadcasting)
52
No Sound (During the Reception of TV (DIGITAL) Broadcasting)
53
No Sound from External Input Devices (1)
53
No Sound from External Input Devices
54
The Audio Signal Is Not Output
56
No Picture on the Display
59
No Picture on the Monitor
69
Major IC Informations
73
Chapter 5. Major IC Informations
73
Detailed Ics Information
77
Pin Connections and Short Description
77
Block Diagram
78
System Block Diagram
113
Chapter 6. Block Diagram/Wiring Diagram
113
Terminal Block Diagram
114
Main Block Diagram
115
Power Block Diagram
116
Wiring Diagram (Lc-32X20E/S/Ru)
117
Wiring Diagram (Lc-37X20E/S/Ru)
118
CHAPTER 7 Printed Wiring Board
119
Main Unit Printed Wiring Board
119
Terminal Unit Printed Wiring Board
123
R/C, Led Unit Printed Wiring
126
Key Unit Printed Wiring Board
126
Mini Av Unit Printed Wiring Board
127
Power Unit Printed Wiring Board
129
Schematic Diagram
131
Voltage Measurement Condition
131
Indication of Resistor & Capacitor
131
Chapter 8 . Schematic Diagram
131
Description of Schematic Diagram
131
Parts Guide
157
Printed Wiring Board Assemblies
158
Lcd Panel and Tuner
158
Cabinet Parts
184
Suppliied Accsessories
189
Packing Parts
190
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Sharp LC-37X20E Specifications
General
Brand
Sharp
Model
LC-37X20E
Category
LCD TV
Language
English
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