DOWNLOAD LG 42LD550 / 42LD550N / 42LD551 / 42LD558 / 42LD559 (CHASSIS:LD01B) Service Manual ↓ Size: 5.02 MB | Pages: 43 in PDF or view online for FREE

Model
42LD550 42LD550N 42LD551 42LD558 42LD559 (CHASSIS:LD01B)
Pages
43
Size
5.02 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42ld550-42ld550n-42ld551-42ld558-42ld559-chassis-l.pdf
Date

LG 42LD550 / 42LD550N / 42LD551 / 42LD558 / 42LD559 (CHASSIS:LD01B) Service Manual ▷ View online

- 6 -
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
1. Application range
This specification is applied to the LCD TV used LD01B
chassis.
2. Requirement for Test
Each part is tested as below without special appointment.
1) Temperature
: 25 ºC ± 5 ºC (77 ºF ± 9ºF), CST : 40 ºC ± 5 ºC
2) Relative Humidity :  65 % ± 10 %
3) Power Voltage
: Standard input voltage (AC 100-240 V~ 50 / 60 Hz)
* Standard Voltage of each products is marked by models.
4) Specification and performance of each parts are followed
each drawing and specification by part number in
accordance with BOM.
5) The receiver must be operated for about 5 minutes prior to
the adjustment.
3. Test method
1) Performance: LGE TV test method followed 
2) Demanded other specification 
- Safety: CE, IEC specification
- EMC:CE, IEC 
4. Model General Specification
No
Item
Specification
Remarks
1. Market
EU(PAL 
Market-36Countries)
DTV & Analog
UK, France, Germany, Spain, Sweden, Finland, Italy, Netherland, Belgium,
Luxemburg, Greece, Denmark, Czech, Austria, Hungary, Switzerland,
Croatia, Turkey, Norway, Slovenia, Moroco, Ireland, 
Analog Only
Kazakhstan,  Latvia, Albania, Estonia, Lithuania, Bosnia, Poland, Portugal,
Bulgaria, Serbia, Russia, Romania, Slovakia, Ukraine,
2. 
Broadcasting system
1)  PAL-BG
2)  PAL-DK
3)  PAL-I/I’
4)  SECAM L/L’
5)  DVB-T/C (ID TV)
3. 
Receiving system
Analog : Upper Heterodyne
Digital : COFDM , QAM
4. 
Scart Jack (1EA)
PAL, SECAM
Scart 1 Jack is Full scart and support RF-OUT(analog).
5. 
Video Input RCA(1EA)
PAL, SECAM, NTSC
4 System : PAL, SECAM, NTSC, PAL60
6. 
Component Input (1EA)
Y/Cb/Cr
Y/Pb/Pr
7. RGB 
Input
RGB-PC
Analog(D-SUB 
15PIN)
8. 
HDMI Input (4EA)
HDMI1-DTV/DVI
HDMI2-DTV
PC(HDMI version 1.3)
HDMI3-DTV
Support HDCP
HDMI4-DTV
9. 
Audio Input (3EA)
RGB/DVI Audio
Component
L/R Input
AV
10.  SDPIF out (1EA)
SPDIF out
11.  Earphone out (1EA)
Antenna, AV1, AV2, AV3, Component,
RGB, HDMI1, HDMI2, HDMI3, HDMI4
12.  USB (1EA)
For SVC (download)
19/22/26/32LD350-ZA, 32/37/42/47LD450-ZA, 32/42/46/60LD550-ZA
19/22/26LE6500-ZA
DVIX
32/42/46/52LE4500-ZA, 19/22/26LE3300-ZA, 32/37/42/47/55LE5300-ZA
- 7 -
5. Component Video Input (Y, C
B
/P
B
, C
R
/P
R
)
No.
Specification
Remark
Resolution
H-freq(kHz)
V-freq(Hz)
1.
720x480 15.73 
60.00 
SDTV,DVD 
480i
2.
720x480 15.63 
59.94 
SDTV,DVD 
480i
3.
720x480
31.47
59.94 480p
4.
720x480
31.50
60.00 480p
5.
720x576 
15.625 
50.00 
SDTV,DVD 625 Line
6.
720x576 31.25 
50.00
HDTV 
576p
7.
1280x720
45.00
50.00 HDTV 
720p
8.
1280x720
44.96
59.94 HDTV 
720p
9.
1280x720 45.00 
60.00 
HDTV 
720p
10.
1920x1080 31.25 
50.00 
HDTV 
1080i
11.
1920x1080
33.75
60.00 HDTV 
1080i
12.
1920x1080 33.72 
59.94 
HDTV 
1080i
13.
1920x1080 56.250 
50 
HDTV 
1080p
14.
1920x1080
67.5 60 
HDTV 
1080p
No.
Specification
Proposed
Remark
Resolution
H-freq(kHz)
V-freq(Hz)
Pixel Clock(MHz)
1.
720*400 
31.468 
70.08
28.321 
For only DOS mode
2.
640*480 31.469 
59.94
25.17  VESA
Input 848*480 60 Hz, 852*480 60 Hz
-> 640*480 60 Hz Display
3.
800*600
37.879
60.31
40.00 VESA 
4.
1024*768 48.363 60.00
65.00 VESA(XGA) 
5.
1280*768 47.78 59.87
79.5 
WXGA 
 
6.
1360*768 47.72
59.8
84.75  WXGA
FHD 
Model
7.
1366*768
47.56
59.6
84.75
WXGA
WXGA Model
8.
1280*1024 63.595  60.0 
108.875
SXGA
FHD 
model
9.
1280*720
45
60
74.25
720p
DTV Standard
10.
1920*1080 66.587
59.93
138.625  WUXGA
FHD 
model
6. RGB (PC)
- 8 -
7. HDMI Input
(1) DTV Mode
No.
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
Remark
1.
720*400 31.468 
70.08 
28.321 
HDCP
2.
640*480 31.469 
59.94 
25.17
VESA  HDCP
3. 800*600
37.879
60.31 
40.00 
VESA 
HDCP
4.
1024*768
48.363
60.00 65.00 
VESA(XGA)
HDCP
5.
1280*768 47.78
59.87
79.5
WXGA  HDCP
6.
1360*768 47.72 59.8 84.75
WXGA  HDCP
7.
1440*1050
55.5
59.90
88.750
WSXGA
Not used(Monitor Panel)
8.
1400*1050
64.744
59.948
101.00
WSXGA
Not used(Monitor Panel)
9.
1680*1050
65.16
59.94
147.00
WSXGA
Not used(Monitor Panel)
10.
1280*1024 63.595
60.0  108.875  SXGA
HDCP/FHD 
model
11.
1920*1080 67.5 
60.00
138.625  WUXGA
HDCP/FHD 
model
(2) PC Mode
No.
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
Proposed
Remark
1.
720*480 
31.469 /31.5 
59.94 /60
27.00/27.03
SDTV 480P
2.
720*576 31.25 
50
54 
SDTV 
576P
3.
1280*720 37.500 
50
74.25  HDTV 
720P
4.
1280*720 
44.96 /45 
59.94 /60
74.17/74.25 
HDTV 720P
5.
1920*1080 
33.72 /33.75 
59.94 /60
74.17/74.25 
HDTV 1080I
6.
1920*1080 28.125 50.00
74.25 
HDTV 
1080I
7.
1920*1080 
26.97 /27 
23.97 /24
74.17/74.25 
HDTV 1080P
8.
1920*1080
33.716 /33.75
29.976 /30.00
74.25
HDTV 1080P
9.
1920*1080 56.250 50
148.5
HDTV 
1080P
10.
1920*1080 
67.43 /67.5 
59.94 /60
148.35/148.50 
HDTV 1080P
- 9 -
ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to all of the LCD TV with
LD01B chassis.
2. Designation
1) The adjustment is according to the order which is
designated and which must be followed, according to the
plan which can be changed only on agreeing.
2) Power Adjustment: Free Voltage
3) Magnetic Field Condition: Nil.
4) Input signal Unit: Product Specification Standard
5) Reserve after operation: Above 5 Minutes (Heat Run)
Temperature : at 25 ºC ± 5 ºC 
Relative humidity : 65 % ± 10 %
Input voltage : 220 V, 60 Hz
6) Adjustment equipments : Color Analyzer (CA-210 or CA-
110), DDC Adjustment Jig equipment, SVC remote control.
7) Push The “IN STOP” key - For memory initialization.
3. Main PCB check process
* APC - After Manual-Insult, executing APC
* Boot file Download
1) Execute ISP program “Mstar ISP Utility” and then click
“Config” tab.
2) Set as below, and then click “Auto Detect” and check “OK”
message
If “Error” is displayed, Check connection between
computer, jig, and set.
3) Click “Read” tab, and then load download file (XXXX.bin)
by clicking “Read”
4) Click “Connect” tab. If “Can’t” is displayed, check
connection between computer, jig, and set.
5) Click “Auto” tab and set as below
6) Click “Run”.
7) After downloading, check “OK” message.
* USB DOWNLOAD
1) Put the USB Stick to the USB socket 
2) Automatically detecting update file in USB Stick
- If your downloaded program version in USB Stick is Low,
it didn’t work. But your downloaded version is High, USB
data is automatically detecting
3) Show the message “Copying files from memory”
          filexxx.bin 
(4) 
(7) 
.OK 
(5) 
(6) 
(1) 
fi lexxx.bin 
(2) 
(3) 
Please Check the Speed : 
To use speed between 
from 200KHz  to 400KHz  
Case1 : Software version up
1. After downloading S/W by USB, TV set will reboot
automatically
2. Push “In-stop” key
3. Push “Power on” key
4. Function inspection
5. After function inspection, Push “In-stop” key.
Case2 : Function check at the assembly line
1. When TV set is entering on the assembly line, Push
“In-stop” key at first.
2. Push “Power on” key for turning it on.
-> If you push “Power on” key, TV set will recover
channel information by itself.
3. After function inspection, Push “In-stop” key.
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