LG RT-15LA60 User manual

MONO
STEREO
ST
DUAL
LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : ML-012C
MODEL : RT-15LA60
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.htm
Sep.,2003
Printed in KoreaP/NO : 3828VD0154K

- 2 -
CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ..................................................................................3
DESCRIPTION OF CONTROLS .............................................................. 4
SPECIFICATION ........................................................................................7
ADJUSTMENT INSTRUCTION .................................................................9
TROUBLE SHOOTING ............................................................................14
PRINTED CIRCUIT BOARD ....................................................................15
BLOCK DIAGRAM...................................................................................18
EXPLODED VIEW .................................................................................. 20
EXPLODED VIEW PARTS LIST..............................................................21
REPLACEMENT PARTS LIST ............................................................... 22
SVC. SHEET ...............................................................................................

- 3 -
PRODUCT SAFETY
IMPORTANT SAFETY NOTICE
This manual was prepared for use only by properly trained audiovisual service
technicians. When servicing this product, under no circumstances should the
original design be modified or altered without permission from LG Electronics
Inc. All components should be replaced only with types identical to those in the
original circuit and their physical location, wiring, and lead dress must conform
to original layout upon completion of repairs. If any fuse (or Fusible Resistor) in
this TV receiver is blown, replace it only with the factory specified fuse type and
rating. When replacing a high wattage resistor (Oxide Metal Film Resistor, over
1W), keep the resistor 10mm away from PCB. Always keep wires away from
high voltage or high temperature parts.
Special components are also used to prevent shock and fire hazard.
These components are indicated by the letter ÒxÓ included in their component
designators and are required to maintain safe performance. No deviations are
allowed without prior approval by LG Electronis Inc. Service work should be
performed only after you are thoroughly familiar with these safety checks and
servicing guidelines.
Circuit diagrams may occasionally differ from the actual circuit used.
This way, implementation of the latest safety and performance improvement
changes into the set is not delayed until the new service literature is printed.
CAUTION: Do not attempt to modify this product in any way.
Never perform customized installations without manufacturerÕs
approval.
Unauthorized modifications will not only void the warranty, but may
lead to property damage or user injury.
GENERAL GUIDANCE
An lsolation Transformer should always be used during the servicing
of a receiver whose chassis is not isolated from the AC power line. Use a
transformer of adequate power rating to protect against personal injury from
electrical shocks. It will also protect the receiver and its components from being
damaged by accidental shorts of the circuitry that may be inadvertently
introduced during the service operation.
Before returning the receiver to the customer, always perform an AC leakage
current check on the exposed metallic parts of the cabinet, such as antennas,
terminals, etc., to be sure the set is safe to operate
without damage of electrical shock.
LEAKAGE CURRENT COLD CHECK
(ANTENNA COLD CHECK)
With the instrumentÕs AC plug removed from AC source, connect an electrical
jumper across the two AC plug prongs. Place the AC switch in the on position,
connect one lead of ohm-meter to the AC plug prongs tied together, and touch
other ohm-meter lead in turn to each exposed metallic parts such as antenna
terminals, phone jacks, etc. If the exposed metallic part has a return path to the
chassis, the measured resistance should be between 1M½ and 5.2M½. When
the exposed metal has no return path to the chassis the reading must be
infinite. Any other abnormality that exists must be corrected before
the receiver is returned to the customer.
ELECTROSTATICALLY SENSITIVE DEVICES
Some semiconductor (solid-state) devices can be damaged easily by static
electricity. Such components commonly are called Electrostatically Sensitive
(ES) Devices. Examples of typical ES devices are integrated circuits and some
field-effect transistors and semiconductor ÒchipÓ components. The following
techniques should be used to help reduce the incidence of component damage
caused by static electricity.
1. Immediately before handling any semiconductor component or
semiconductor-equipped assembly, drain off any electrostatic charge on the
body by touching a known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device, which should be
removed for potential shock reasons prior to applying power to the unit under
test.
2. After removing an electrical assembly equipped with ES devices, place the
assembly on a conductive surface such as an ESD mat, to prevent
electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices
not classified as Òanti-staticÓ can generate electrical charges sufficient to
damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charge
sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until
immediately before you are ready to install it. (Most replacement ES devices
are packaged with leads electrically shorted together by conductive foam,
aluminum foil, or comparable conductive material.)
7. Immediately before removing the protective material from the leads of a
replacement ES device, touch the protective material to the chassis or circuit
assembly into which the device will be installed.
Caution: Be sure no power is applied to the chassis or circuit, and observe
all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES
devices. (Otherwise, seemingly harmless motion, such as the brushing
together of your clothing or the lifting of your foot from a carpeted floor, can
generate static electricity sufficient to damage an ES device.)

DESCRIPTION OF CONTROLS
- 4 -
POWERMUTE
TV/AV MULTIMEDIA I/II
LIST
PR
PR
VOL
123
456
789
SSM PSM
0
VOL
EXIT MENU
SLEEP PIP TEXT
POSITION PIP INPUT TIME
SIZE MIX
HOLD
PIP PR+
PIP PR
REVEAL
INDEX MODE
?
i M
Q.VIEW
OK
All the functions can be controlled with the remote control handset.
Some functions can also be adjusted with the buttons on the side
panel of the set.
Remote control handset
Before you use the remote control handset, please install the bat-
teries. See the next page.
1. MUTE
switches the sound on or off.
2. TV/AV
selects the remote operating mode.
clears the menu from the screen.
switches the set on from standby.
3. LIST
displays the programme table.
4. EXIT
Clear all on-screen displays and returns to TV viewing from any
menu.
5. D / E(Programme Up/Down)
selects a programme or a menu item.
switches the set on from standby.
F / G (Volume Up/Down)
adjusts the volume.
adjusts menu settings.
OK
accepts your selection or displays the current mode.
6. NUMBER BUTTONS
switches the set on from standby and selects a programme.
7. SSM (Sound Status Memory)
recalls your preferred sound setting.
8. PIP BUTTONS (option) (PC mode only)
PIP
switches the sub picture on or off.
adjusts the sub picture size.
PIP PR +/ -
selects a programme for the sub picture.
PIP INPUT
selects the input mode for the sub picture.
POSITION
relocates the sub picture in up/down or left/right direction.
111
10
12
13
14
15
2
3
4
5
6
7
8
9
(With TELETEXT)

- 5 -
9. SLEEP
sets the sleep timer.
10. MULTIMEDIA
selects TV, Component or PC mode.
switches the set on from standby.
11. POWER
switches the set on from standby or off to standby.
12. I/II
selects the language during dual language broadcast.
selects the sound output (option).
13. MENU
selects a menu.
14. PSM (Picture Status Memory)
recalls your preferred picture setting.
15. TELETEXT BUTTONS (option)
These buttons are used for teletext.
For further details, see the ÔTeletextÕ section.
Note : In teletext mode, the POSITION,PIP INPUT and PIP PR+/-
buttons are used for teletext functions.
POWERMUTE
TV/AV MULTIMEDIA I/II
LIST
PR
PR
VOL
123
456
789
SSM PSM
0
VOL
EXIT MENU
SLEEP PIP
POSITION
PIP INPUT
PIP PR+
PIP PR
Q.VIEW
OK
111
10
12
13
14
2
3
4
5
6
7
8
9
(Without TELETEXT)

- 6 -
1. ON/OFF (rr/I)
switches the set on from standby or off to
standby.
2. TV/AV/PC
selects the remote operating mode.
clears the menu from the screen.
switches the set on from standby.
3. MENU
selects a menu.
4. OK
accepts your selection or displays the current
mode.
5. FF/ GG(Volume Up/Down)
adjusts the volume.
adjusts menu settings.
6. DD/ EE(Programme Up/Down)
selects a programme or a menu item.
switches the set on from standby.
7. REMOTE CONTROL SENSOR
8. LED (Light Emitting Diode) DISPLAY
illuminates brightly when the set is switched on.
:POWER/STANDBY indicator
:MONO indicator
: STEREO indicator
: DUAL indicator
: DPM indicator
9. HEADPHONE SOCKET
Connect the headphone plug to this socket.
10. AUDIO/VIDEO IN SOCKETS (AV2)
Connect the audio/video out sockets of exter-
nal equipment to these sockets.
S-VIDEO/AUDIO IN SOCKETS (S-VIDEO)
Connect the video out socket of an S-VIDEO
VCR to the S-VIDEO socket.
Connects the audio out sockets of the S-
VIDEO VCR to the audio sockets as in AV2.
Side panel
MONO DPM
STEREO
ST
DUAL
S-VIDEOVIDEO
AUDIO
R
AV2
L / MONO
PR
VOL
MENU
OK
ON/OFF
TV
AV/PC
/ I
6
5
4
3
2
1
7 8
9
10
MONO
STEREO
ST
DUAL
DPM

- 7 -
1. Application range
This specification is applied to ML-012B/C chassis.
2. Requirement for Test
Testing for standard of each part must be followed in below
condition.
(1) Temperature: 25¡C ± 5¡C(But, CST must be tested 40¡C ±
2¡C (Humidity: 50%))
(2) Humidity: 65% ± 10%
(3) Power: Standard input voltage (AC 100-220V, 50/60Hz)
(4) Measurement must be performed after heat-run more than
15min.
(5) Adjusting standard for this chassis is followed a special
standard.
3. Test and Inspection method
(1) Capacity: Follow LG electronics TV Testing Standard.
(2) Another Required Standard
Follow the standard of each nation.
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement .
4.General Specification
1
2
3
4
5
6
7
Panel
Frequency range
D-SUB pin confiruration
Control function
Response time(TYP/MAX)
Power consumption
Power ON
Stand by
Suspend
Power off
LCD module
15.1Ó TFT XGA LCD
H: 31 ~ 61Khz
V: 56 ~ 85Hz
1:RED 2:Green
3:Blue 4:ID2 (GND)
5:S.T(GND) 6:RED GND
7:Green GND 8:Blue GND
9:N.C 10:D-GND
11:ID0(GND) 12:SDA
13:H-Sync 14:V-Sync
15:SCL Shell: GND
1) Contrast/ Brightness
2) H-Position/ V-Position
3) Tracking: Clock/ Phase
4) Auto configure
5) Reset
1)Rising time: 7(10)
2)Fall Time : 18(20)
H/V-Sync Video W Unit
ON/ON Active ² 50 W
OFF/ON OFF ² W
ON/OFF OFF ² W
- - ² 3.0 W
Type Color active matrix
Size TFT LCD
Size 15.1Ó(38.016cm)
Pixel pitch 0.297mm X 0.297mm
Pixel format 1024 X 768 Pixel
Color depth RGB Stripe matrix
16,777,216 colors
Active video area 16,200,000 colors
Coating 304.128mm X 228.0960mm
Back light Anti glare,Hard coating,6CCFL
Item Remark
No.

- 8 -
5. Feature and Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Teletext
REMOCON
AV input
S-AV input
Component input
PERI TV Connector
RGB input
D-Sub Audio input
2 Carrier stereo
NICAM stereo
2 Carrier dual
NICAM dual
SSC(split screen) mode
MUP(Multi Picture Display) mode
Film mode
Noise reduction
Progressive scan
Motion detection
Dolby virtual
Swivel speaker
TOP,FLOF,LIST 10 page
RC-5 /NEC code(NTSC)
1
1
1
Full SCART : 1
1
1
BG, DK
BG, I, LLÕ
BG, DK
BG, I, LLÕ
X
X
X
O
O
X
O
X
Item Remark
No.
TOP(option)
PAL/NTSC
Side & Rear
Side
Rear(option)
Rear(option,EU)
D-Sub 15 pin
(15 inch only)
Stereo(15 Inch only)

- 9 -
1. Application Object
This instruction is for the application to the LCD TV.
2. Notes
(1) This set uses an adapter, so connect the adapter and the
set correctly before adjustment.
(2) The adjustment must be performed under the correct
sequence.
(3) The adjustment must be performed in the circumstance of
25!5cC of temperature and 65!10% of relative humidity, if
there is no specific designation.
(4) The input voltage of the receiver must keep 100~220V,
50/60Hz in adjusting.
(5) The set must be operated for 30 minutes preliminarily
before adjusting, if there is no specific designation.
[ÔHeat RunÕ must be performed with the full white signal or TV
noise signal in the internal part of the set.
[ The time for ÔHeat RunÕ can be changed owing to production
plan.
3. PC Input Mode Adjustment
3-1. Required Test Equipment
(1) A pattern generator being in proportion to 801GF(or
VG819) ; Pattern of 16(11) tones
(2) A SVC remote controller
3-2. Preparation for Adjustment
(1) Perform ÔHeat RunÕ for more than 20 minutes in the white
pattern.
(2) Connect the signal from a pattern generator to the LCD
TVÕs PC Input Jack(D-Sub).
(3) Apply the gray signal of XGA(1024X768) 16 tones by
using 801GF or VG819.
(4) In SVC menu mode,press the INSTART key(or SVC key)
and adjust the Auto gay from 0 to 1 by using Vol(+) button.
4. Component input mode adjustment
4-1. Required Test Equipment
(1) A pattern generator being in proportion to MSPG925LTH
(or 801F,SETTOP box)
(2) Adjustment Remote controller (SVC Remocon)
4-2. Preparation for Adjustment
(1) Perfome ÔHeat-runÕ for more than 20 minutes in White
Pattern.
(2) Connect the signal from a pattern generator to the LCD
TVÕs component Input Jack.
4-3. YPbPrAdjustment
(1) Apply the DTV 1080i,color bar pattern by using
MSPG925LTH. Or apply DTV 1080i color bar pattern of
Pattern generator.
(2) In SVC menu mode,operate YPbPr adjustment by using
Volume + button.
5. Location adjustment of each mode
(1)Display the 19 Mode and check the screen.
ADJUSTMENT INSTRUCTION
Mode VGA-
60
VGA-
67
VGA-
72
VGA-
75
SVGA
-56
SVGA
-60
SVGA
-72
H_total
H_display
H_blanking
H-sync
H_polarity
H_bp
H_fp
H-freq[kHz]
/Clk[MHz]
V_total
V-display
V_blanking
V-sync
V_polarity
V_bp
V_fp
800
640
160
96
NEG
48
16
31.469
25.175
525
480
45
2
NEG
33
10
864
640
224
64
NEG
96
64
35.0
30.24
525
480
45
3
NEG
39
3
832
656
176
40
NEG
120
16
37.861
31.5
520
496
24
3
NEG
20
1
840
640
200
64
NEG
120
16
37.5
31.5
500
480
20
3
NEG
16
1
1024
800
224
72
POS
128
24
35.156
36.0
625
600
25
2
POS
22
1
1056
800
256
128
POS
88
40
37.879
40.0
628
600
28
4
POS
23
1
1040
800
240
120
POS
64
56
48.077
50.0
666
600
66
6
POS
23
37
VGA-
85
832
640
192
56
NEG
80
56
43.269
36.0
509
480
29
3
NEG
25
1
Mode SVGA
-75
SVGA
-85
XGA-
60
XGA-
70
MAC-
75
XGA-
85
H_total
H_display
H_blanking
H-sync
H_polarity
H_bp
H_fp
H-freq[kHz]
/Clk[MHz]
V_total
V-display
V_blanking
V-sync
V_polarity
V_bp
V_fp
1056
800
256
80
POS
160
16
46.875
49.5
625
600
25
3
POS
21
1
1048
800
248
64
POS
152
32
53.674
56.25
631
600
31
3
POS
27
1
1344
1024
320
136
NEG
136
160
48.363
65.0
806
768
38
6
NEG
29
3
1328
1024
304
136
144
24
56.476
75.0
806
768
38
6
NEG
29
3
1152
832
320
64
NEG
224
32
49.725
57.283
667
624
43
3
NEG
39
1
1376
1024
352
96
POS
208
48
68.677
84.997
808
768
40
3
POS
36
1
XGA-
75
1312
1024
288
96
POS
176
16
60.023
78.75
800
768
32
3
POS
28
1
* H[dot]/ V[line]

6.EDID (The extended display identifiaction data)
7. Option1 data(200PR~A2 ST:1bit,SYS:2bit)
- 10 -
00
10
20
30
40
50
60
70
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00
00
14
81
01
01
26
00
FF
0B
50
40
01
01
30
32
FF
01
54
81
01
01
18
55
FF
01
BF
80
01
01
88
1E
FF
78
E8
01
01
01
36
46
FF
1F
80
01
01
01
00
0D
FF
17
31
10
01
01
0E
00
00
70
59
0E
01
01
C3
0A
30
E8
3B
01
F9
01
10
20
E5
C3
D9
01
15
01
00
20
D7
A0
45
01
01
64
00
20
3A
A3
59
01
01
19
1E
20
01
54
61
01
01
00
00
20
00
4C
59
01
01
40
00
20
00
97
71
01
01
41
00
00
00
24
59
01
01
00
FD
C8
OPTION
Data 200PR
TEXT I/II SV TOP A2 ST SYS
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
SCART
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
OPTION
Data 200PR
TEXT I/II SV TOP A2 ST SYS
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
SCART
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1

- 11 -
OPTION
Data 200PR
TEXT I/II SV TOP A2 ST SYS
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
SCART
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
OPTION
Data 200PR
TEXT I/II SV TOP A2 ST SYS
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
SCART
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1

- 12 -
OPTION
Data 200PR
TEXT I/II SV TOP A2 ST SYS
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
SCART
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
OPTION
Data 200PR
TEXT I/II SV TOP A2 ST SYS
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
01
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
SCART
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0

- 13 -
OPTION
Data 200PR
TEXT I/II SV TOP A2 ST SYS
248
249
250
251
252
253
254
255
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
1
2
3
0
1
2
3
SCART
1
1
1
1
1
1
1
1
8. Option2 data(ACMS~BBACK:1bit,LANG:3bit)
9. Option3 data(IIC AFT~CH+AU:1bit)
OPTION
Data ACMS VOL
0
1
2
3
4
5
6
7
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
HIDEV
0
1
0
1
0
1
0
1
OPTION
Data IIC AFT MD SAVE
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
MONO CH+AUS
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1

- 14 -
8 No sound Defective Reset IC of IC603 1) Check volume and speaker
- Speaker Defective MSP3421 of IC601 - Sound comes out only when being inputted into Audio
- Earphone Defective B+(8V,5V) of IC604,605. L/R
2) Check after replacing IC603
3) Replace IC601
4) Check and replace B+ of IC604,605.
9 Video color beat noise Earphone shield case being touched
Check the mould of shield and JA2000, Replace shield case
Soldering IC301 and IC912 Re-soldering
1 No screen Input error of inverter connector 1) Bend the pin legs of P1 connector -> recheck them
2) Check and repair the IC804 SI4963,805 SI4925
Pin 20 connector 1) Check and fix P902 connector
being slipped out 2) Check and fix the components at P902 LCD module
and at main board.
3) Check Pin20.
Cracked components and 1) Check and repair tuner board and main board
soldering at tuner board 2) Solder 102.
2 Dark screen 1) Defective LCD lamp 1) Replace the inverter
2) Defective inverter 2) Replace the LCD lamp
3) Input error of inverter connector 2) Check the connector input.
TROUBLESHOOTING
1. General Features
No. Symptom Cause Check Point
Check Point
3. TV and external input
No. Symptom Cause
2. PC Mode
No. Symptom Cause Check Point
5 Screen noise Clock or phase being 1) Resettig is needed according to the video card of each
not able to be adjusted PC
2) Horizontal noise : adjust phase until no horizontal
noise occurres
3) Vertical noise : adjust clock in menu until no vertical
noise occurres
6 Screen position error Screen position error 1) Play the Auto Configure in Menu.
horizontally or vertically 2) Adjust horizontal and vertical position until the screen
displayes normally
7 Color beat noise Soldering D-SUB Jack of JA202 Recheck adn repair JA202,IC202
and IC202.

- 15 -
PRINTED CIRCUIT BOARD
MAIN(TOP)

- 16 -
MAIN(BOTTOM)

- 17 -
CONTROL BOARD
SIDE AV BOARD
LED BOARD

BLOCK DIAGRAM
- 18 -

MEMO
- 19 -

- 20 -
EXPLODED VIEW
120
120
300
112
560
530
250
520
550
500
320
210
220
310
340
350
330
360
370
380
330
400
430
230
240