Sharp LC-20AV7U Support Question
Sharp LC-20AV7U Support Question
Find answers below for this question about Sharp LC-20AV7U.Need a Sharp LC-20AV7U manual? We have 1 online manual for this item!
Question posted by violebell on May 13th, 2012
How To Connect Tv To Directv And Dvd Player
I have a Sharp LC 20AV7U with no manual and no remote (on order but not received yet). I have tv connected to Directv box using coaxial and. The TV is connected to DVD player using AV RCA cable.
This is the way I had my old tv set up, but is this correct for this Sharp tv?
How do I get the video to read the Directv channels? All I get now is Input 1 or 2, Channel 14 no channel video.
Current Answers
Answer #1: Posted by TVDan on May 13th, 2012 10:09 AM
TVDan
Member since:
August 8th, 2011 Points: 4,732,000
Member since:
August 8th, 2011 Points: 4,732,000
the way you have it hooked up will work okay. here's a souce to purchase the manual: http://www.encompassparts.com/item/7747008/Sharp/9HS1EMN22181/Operation_Manual
TV Dan
Related Sharp LC-20AV7U Manual Pages
Service Manual - Page 1
... FUNCTION DESCRIPTIONS 12-1 EXPLODED VIEWS ...13-1 MECHANICAL PARTS LIST ...14-1 ELECTRICAL PARTS LIST ...15-1
This document has been published to be used . SERVICE MANUAL
LCD COLOR TELEVISION
LC-20AV7U/LC-20SH7U
SERVICE MANUAL
S37F3LC20AV7U
LCD COLOR TELEVISION
MODEL LC-20AV7U
MODEL LC-20SH7U
In the interests of user-safety (Required by safety regulations in some countries) the set should be...
Service Manual - Page 2
...: 75 ohm Unbal., F type Intermediate Freq. : Picture 45.75 MHz, Sound 41.25 MHz
Description 1. Audio S/N
Condition
Unit
80dB
dB
80dB
dB
Nominal -----
< LCD PANEL >
Description 1. Number of useful life. Color Temperature
3. Audio Output Power 2. Response
4.
This is manufactured to 70
< VIDEO >
Description 1.
Audio Distortion 3. Limit 0.8/0.8 3.0/3.0
---->45/45 >45/45
The LCD...
Service Manual - Page 5
...PRINTED WIRING BOARD. Circuit Board Indications
a. FFC Cable
Connector CBA
2 Using lead-free wire solder
When fixing the PWB soldered with lead-free solder....manuals. If a different type of solder stays on the tip of the soldering bit may be sure to use , file it is higher than the lead wire solder by 40°C, and as you connect or disconnect the FFC (Flexible Foil Connector) cable...
Service Manual - Page 6
... or installed.
(3) Fig. Bend, route and dress the cables as the Identification (location) No. Removal
Step/ Loc. ...*CN402, *CN403,
*CN1201, *CN1202,
--- No. No. These numbers are also used as they were.
[5] Function CBA [4] Rear Cabinet
[1] Base Plate
[12] Junction-A...PRINTED WIRING BOARD.
[ LC-20AV7U ]
1.
of parts in reverse order. No. Disassembly Flowchart
This flowchart...
Service Manual - Page 9
TV Cable Wiring Diagram
Main CBA
CN401
Function CBA
CL1107
CN1301
To LCD Module
CN1202
CN1201
To LCD Module
CN402
Junction-A CBA
CL801
To Speaker
CN403 CN801
CN1302
CL1104
IR Sensor CBA
CN62
CN61
CN102 CN101
CN802
Junction-B CBA
CL802
DTV Module CBA Unit
To Speaker
Fig. D3
4-4
A7144_45DC
Service Manual - Page 10
...[12] Speaker (s) D2 8(S-13)
---
[13]
Front Cabinet
D2
---
↓
↓
↓
↓
↓
(1)
(2)
(3)
(4)
(5)
Note:
(1) Order of parts in reverse order. Bend, route and dress the cables as the Identification (location) No. Part
Remove/*Unhook/
Fig. [ LC-20SH7U ]
3. Unlock/Release/ Unplug/Unclamp/
Note
Desolder
8(S-11), *CN61,
DTV [9] Module
CBA Unit
*CN62...
Service Manual - Page 13
TV Cable Wiring Diagram
Main CBA
CN401
Function CBA
CL1107
CN1301
To LCD Module
CN1202
CN1201
To LCD Module
CN402
To Speaker
CN403 CN801
CN1302
CL1104
IR Sensor CBA
CN62
CN61
CN102 CN101
DTV Module CBA Unit
CN802 To Speaker
Fig. D3
4-8
A7144_45DC
Service Manual - Page 14
... COB(C/D1) C-COB(C/D2)
Button (on table 1. Initial Setting
General: Enter Service mode. Set initial data as shown on the remote control) [MENU] → [3]
[MENU] → [4]
[MENU] → [5]
[MENU] → [6]
[MENU] ...WIRING BOARD. NOTE:
Electrical adjustments are required after [MENU] on the TV unit simultaneously in the standby mode.
1. NTSC Pattern Generator (Color Bar W/White
Window,...
Service Manual - Page 15
...)". Refer to the center on the LCD-Panel surface after zero point calibration as a preparation.
2. Operate the unit for Red adjustment. Item
DR(C/D1) C-DR(C/D2) DB(C/D1) C-DB(C/D2)
Button (on the TV unit.)
L = 3 cm
INPUT: WHITE 80%, 20% Color Analyzer
Note: Use the service remote control unit 1. Test Point Adj. Press [VOL...
Service Manual - Page 16
... adjust.
6.
Then input above signal.
2. [RF/INPUT1] Press [MENU] button on the service remote control unit and press [1] on the service remote control (selecting "BRT" mode). [INPUT2] Press [MENU] button on the service remote control unit and press [3] on the TV unit.)
5-3
A7144EA Point
Input
[MENU] button
Ant. EQ. Turn the power off and...
Service Manual - Page 17
To initialize the LCD television, press [DISPLAY] button on the upper right of the screen.
6-1
A7144INT Confirm "FF" indication on the remote control unit.
3. To enter the service mode, press [MENU] and [POWER] buttons on the TV unit simultaneously in the standby mode.
2. HOW TO INITIALIZE THE LCD TELEVISION
1.
Service Manual - Page 18
...not output.
7-3
10 DTV-ON+5V is not output.
7-3
11 AL+3.3V(D) is not output.
7-4
12 PANEL+3.3V is not output.
7-4
13 AL+1.2V(D) is not output.
7-4
14 AL+3.3V(A) is not output....18 DTV-ON+1.8V is not output.
7-6
19 PANEL-6V is not output.
7-6
20 The key operation is not functioning.
7-6
21 No operation is possible from the remote control unit.
7-7
22 Picture does not appear normally...
Service Manual - Page 28
IC1202 (TV MICRO CONTROLLER) KEY-IN-2 4 KEY-IN-1 3 REMOTE 27
RESET 94
XIN 37 XOUT 38
Q917 RESET
AL+3.3V(D)
X1301 27MHz
...SDA 6 SCL
MAIN CBA
CN1301 1 KEY-IN-2 2 KEY-IN-1
CL1107 1 2
FUNCTION CBA
KEY SWITCH KEY SWITCH
CN1302 3 REMOTE 4 P-ON-H
CL1104 3 4
RV1142
REMOTE SENSOR
Q1142 LED DRIVE
D1142 POWER
AL+3.3V(D)
IR SENSOR CBA
VCOM
DTV-ON-H BACKLIGHT-SW
P-ON-H VGH-H BACKLIGHT-ADJ
TO LCD...
Service Manual - Page 33
... DIAGRAM
CN1202 2 PANEL+25V 3 PANEL+25V 5 PANEL+3.3V 6 PANEL+3.3V 8 PANEL+10.8V 10 PANEL-6V
TO LCD MODULE
A7144BLP Fixed voltage (or Auto voltage selectable) power supply circuit is used in hot circuit ... Otherwise it may cause some components in the power supply circuit are not defective before you connect the AC plug to fail.
4A/125V
CAUTION ! : For continued protection against risk of ...
Service Manual - Page 36
...TV power cord into a standard AC outlet.:
Voltage
1 2 5.0
3 5.0
Power on foil side. : Used to indicate a test point with no test pin. : Used...use the part number shown on the drawings for ordering. ABCD
6. Test Point Information
: Indicates a test point with a jumper wire across a hole in the PCB. : Used... use only original replacement parts which are not defective before you connect the...
Service Manual - Page 41
...
AA-1
Q916
BB-3
Q917
BB-4
Q918
CC-3
Q919
CC-3
Q923
BB-3
9-7
A7144SCM5
NOTE: The voltage for parts in hot circuit is used in this unit. MAIN 5/5
Ref No. If Main Fuse (F601) is blown , check to see that all components in the power supply...4 A, 125V fuse. Otherwise it may cause some components in the power supply circuit are not defective before you connect the AC plug to fail.
Service Manual - Page 46
...
D-5
Q603
D-5
Q707
B-2
Q708
B-2
Q709
B-2
Ref No.
NOTE: The voltage for parts in order to have the ability to increase the input slowly,when troubleshooting this unit. MAIN CBA
Ref No.... components in the power supply circuit are not defective before you connect the AC plug to fail. If Main Fuse (F601) is used . Position
TRANSISTORS
Q802
C-5
Q901
E-2
Q902
D-1
Q903
D-2
...
Service Manual - Page 47
...circuit, an isolation transformer must be used in this type power supply circuit, a variable isolation transformer is blown , check to see that all components in order to have the ability to increase... the input slowly,when troubleshooting this unit. Also, in the power supply circuit are not defective before you connect the AC plug to...
Service Manual - Page 51
... Clock
7 WP
Write Protect
8 VCC
VCC
IC1202 (LCD Drive / LCD Signal Process / TV Micro Controller)
Pin No. Signal Name
Function
1 V-OUT
Video Signal Output
2 DEFECT-SW ...
+1.2V VDD
26 VGH-H
VGH Signal at High
27 REMOTE
Remote Control Signal Input
28 P-ON-H
Power On Signal at ...Data
32 NU
Not Used
33 NU
Not Used
34 NU
Not Used
35 NU
Not Used
36 NU
Not Used
37 XIN
Crystal ...
Service Manual - Page 52
...
119 VSS
GND
120 VSS
GND
121 VSS
GND
122 LPF
Panel Clock PLL Filter
123 RSPI
Reference Terminal
124 NU
Not Used
125 CLKL
Clock Signal Output
126 OB[5]
Pixel Data Output (OB...Connection
48 AUDIO-MUTE Audio Mute Signal Output
49 INPUT-0
Input Select 0 Signal Output
50 INPUT-1
Input Select 1 Signal Output
51 INPUT-2
Input Select 2 Signal Output
52 NU
Not Used
53 NU
Not Used...
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