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PDF 32LD320 Data sheet ( Hoja de datos )

Número de pieza 32LD320
Descripción LCD TV Manual
Fabricantes LG　
Logotipo LG Logotipo



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No Preview Available ! 32LD320 Hoja de datos, Descripción, Manual

North/Latin America
Europe/Africa
Asia/Oceania
Internal Use Only
http://aic.lgservice.com
http://eic.lgservice.com
http://biz.lgservice.com
LCD TV
SERVICE MANUAL
CHASSIS : LD91A
MODEL : 32LD320 32LD320-ZA
MODEL : 32LD320N 32LD320N-ZA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
P/NO : MFL50326844 (1004-REV00)
Printed in Korea
Free Datasheet http://www.datasheet4u.com/

1 page




32LD320 pdf
IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent flat against the
circuit foil. When holes are the slotted type, the following technique
should be used to remove and replace the IC. When working with
boards using the familiar round hole, use the standard technique
as outlined in paragraphs 5 and 6 above.
Removal
1. Desolder and straighten each IC lead in one operation by gently
prying up on the lead with the soldering iron tip as the solder
melts.
2. Draw away the melted solder with an anti-static suction-type
solder removal device (or with solder braid) before removing the
IC.
Replacement
1. Carefully insert the replacement IC in the circuit board.
2. Carefully bend each IC lead against the circuit foil pad and
solder it.
3. Clean the soldered areas with a small wire-bristle brush.
(It is not necessary to reapply acrylic coating to the areas).
"Small-Signal" Discrete Transistor
Removal/Replacement
1. Remove the defective transistor by clipping its leads as close as
possible to the component body.
2. Bend into a "U" shape the end of each of three leads remaining
on the circuit board.
3. Bend into a "U" shape the replacement transistor leads.
4. Connect the replacement transistor leads to the corresponding
leads extending from the circuit board and crimp the "U" with
long nose pliers to insure metal to metal contact then solder
each connection.
Power Output, Transistor Device
Removal/Replacement
1. Heat and remove all solder from around the transistor leads.
2. Remove the heat sink mounting screw (if so equipped).
3. Carefully remove the transistor from the heat sink of the circuit
board.
4. Insert new transistor in the circuit board.
5. Solder each transistor lead, and clip off excess lead.
6. Replace heat sink.
Circuit Board Foil Repair
Excessive heat applied to the copper foil of any printed circuit
board will weaken the adhesive that bonds the foil to the circuit
board causing the foil to separate from or "lift-off" the board. The
following guidelines and procedures should be followed whenever
this condition is encountered.
At IC Connections
To repair a defective copper pattern at IC connections use the
following procedure to install a jumper wire on the copper pattern
side of the circuit board. (Use this technique only on IC
connections).
1. Carefully remove the damaged copper pattern with a sharp
knife. (Remove only as much copper as absolutely necessary).
2. carefully scratch away the solder resist and acrylic coating (if
used) from the end of the remaining copper pattern.
3. Bend a small "U" in one end of a small gauge jumper wire and
carefully crimp it around the IC pin. Solder the IC connection.
4. Route the jumper wire along the path of the out-away copper
pattern and let it overlap the previously scraped end of the good
copper pattern. Solder the overlapped area and clip off any
excess jumper wire.
At Other Connections
Use the following technique to repair the defective copper pattern
at connections other than IC Pins. This technique involves the
installation of a jumper wire on the component side of the circuit
board.
1. Remove the defective copper pattern with a sharp knife.
Remove at least 1/4 inch of copper, to ensure that a hazardous
condition will not exist if the jumper wire opens.
2. Trace along the copper pattern from both sides of the pattern
break and locate the nearest component that is directly
connected to the affected copper pattern.
3. Connect insulated 20-gauge jumper wire from the lead of the
nearest component on one side of the pattern break to the lead
of the nearest component on the other side.
Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper wire is dressed so the
it does not touch components or sharp edges.
Diode Removal/Replacement
1. Remove defective diode by clipping its leads as close as
possible to diode body.
2. Bend the two remaining leads perpendicular y to the circuit
board.
3. Observing diode polarity, wrap each lead of the new diode
around the corresponding lead on the circuit board.
4. Securely crimp each connection and solder it.
5. Inspect (on the circuit board copper side) the solder joints of
the two "original" leads. If they are not shiny, reheat them and if
necessary, apply additional solder.
Fuse and Conventional Resistor
Removal/Replacement
1. Clip each fuse or resistor lead at top of the circuit board hollow
stake.
2. Securely crimp the leads of replacement component around
notch at stake top.
3. Solder the connections.
CAUTION: Maintain original spacing between the replaced
component and adjacent components and the circuit board to
prevent excessive component temperatures.
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-5-
LGE Internal Use Only
Free Datasheet http://www.datasheet4u.com/

5 Page





32LD320 arduino
- Auto Download
• After enter Service Mode by pushing “ADJ” key,
• Enter EDID D/L mode.
• Enter “START” by pushing “OK” key.
1) Analog Data 128Byte (2Bi)
0 1 2 3 4 5 6 7 8 9A BCD E F
0 0 00 F F F F F F F F F F F F 00 1E 6D
a
b
1 0 c 01 03 80 73 41 78 0A C F 74 A3 57 4C B0 23
2 0 09 48 4C A1 08 00 81 C0 61 40 45 40 31 40 01 01
3 0 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
4 0 36 00 7E 8A 42 00 00 1E 01 1D 00 72 51 D0 1E 20
5 0 6E 28 55 00 7E 8A 42 00 00 1E 00 00 00 FD 00 3A
6 0 3E 1F 46 10 00 0A 20 20 20 20 20 20
d
7 0 d 01 e
8 0 02 03 20 F1 4E 10 1F 84 13 05 14 03 02 12 20 21
9 0 22 15 01 26 15 07 50 09 57 07
f
A 0 f 80 18 71 1C 16 20 58 2C 25 00 7E 8A 42 00
B0 00 9E 01 1D 00 80 51 D0 0C 20 40 80 35 00 7E 8A
C0 42 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00
D 0 7E 8A 42 00 00 18 02 3A 80 18 71 38 2D 40 58 2C
E0 45 00 7E 8A 42 00 00 1E 01 1D 80 D0 72 1C 16 20
F0 10 2C 25 80 7E 8A 42 00 00 9E 00 00 00 00 00 D 5
* Edid data and Model option download (RS232)
Item CMD1 CMD2 Data0
Download
‘Mode In’
A
A 0 0 When transfer the ‘Mode In’,
Carry the command.
Download A
E 00 10 Automatically Download
(The use of a internal pattern)
- Manual Download
* Caution
1) Use the proper signal cable for EDID Download
- Analog EDID : Pin3 exists
- Digital EDID : Pin3 exists
- Never connect HDMI & D-sub Cable at the same time.
- Use the proper cables below for EDID Writing
- Download HDMI1, HDMI2, separately because HDMI1
is different from HDMI3
For Analog EDID
D-sub to D-sub
For HDMI EDID
DVI-D to HDMI or HDMI to HDMI
2) DIGITAL DATA(HDMI-1/2/3/4) 256Byte
0 1 2 3 4 5 6 7 8 9A BCD E F
0 0 00 F F F F F F F F F F F F 00 1E 6D
a
b
1 0 c 01 03 80 73 41 78 0A C F 74 A3 57 4C B0 23
2 0 09 48 4C A1 08 00 81 C0 61 40 45 40 31 40 01 01
3 0 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70
4 0 36 00 7E 8A 42 00 00 1E 01 1D 00 72 51 D0 1E 20
5 0 6E 28 55 00 7E 8A 42 00 00 1E 00 00 00 FD 00 3A
6 0 3E 1F 46 10 00 0A 20 20 20 20 20 20
d
7 0 d 01 e
8 0 02 03 20 F1 4E 10 1F 84 13 05 14 03 02 12 20 21
9 0 22 15 01 26 15 07 50 09 57 07
f
A 0 f 80 18 71 1C 16 20 58 2C 25 00 7E 8A 42 00
B0 00 9E 01 1D 00 80 51 D0 0C 20 40 80 35 00 7E 8A
C0 42 00 00 1E 8C 0A D0 8A 20 E0 2D 10 10 3E 96 00
D 0 7E 8A 42 00 00 18 02 3A 80 18 71 38 2D 40 58 2C
E0 45 00 7E 8A 42 00 00 1E 01 1D 80 D0 72 1C 16 20
F0 10 2C 25 80 7E 8A 42 00 00 9E 00 00 00 00 00 D 5
* Detail EDID Options are below
Product ID
Model Name
HEX
EDID Table
FHD Model
0001
01 00
HD Model
0000
00 00
DDC Function
Analog/Digital
Analog/Digital
Serial No: Controlled on production line.
Month, Year: Controlled on production line:
ex) Monthly : ‘09’ -> ‘09’
Year : ‘2006’ -> ‘10’
Model Name(Hex):
MODEL
MODEL NAME(HEX)
all 00 00 00 FC 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20
No. Item
1 ManufacturerID
2 Version
3 Revision
Condition
GSM
Digital : 1
Digital : 3
Hex Data
1E6D
01
03
Checksum: Changeable by total EDID data.
Vendor Specific(HDMI)
INPUT
MODEL NAME(HEX)
HDMI1
67030C001000011D
HDMI2
67030C002000011D
HDMI3
67030C003000011D
Copyright ©2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 11 -
LGE Internal Use Only
Free Datasheet http://www.datasheet4u.com/

11 Page







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