Service Manuals, User Guides, Schematic Diagrams or docs for : LG LCD RZ-20LA31 LG_lcd_RZ-20LA31
<< Back | HomeMost service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.
Image preview - the first page of the document
>> Download LG_lcd_RZ-20LA31 documenatation <<
Text preview - extract from the document
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
LCD TV
SERVICE MANUAL
CHASSIS : ML-024B
MODEL : RZ-20LA31
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Jun.,2003
P/NO : 3828VD0131U Printed in Korea
CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ..................................................................................3
DESCRIPTION OF CONTROLS .............................................................. 4
ADJUSTMENT INSTRUCTION .................................................................7
TROUBLE SHOOTING ............................................................................13
BLOCK DIAGRAM...................................................................................14
EXPLODED VIEW .................................................................................. 16
EXPLODED VIEW PARTS LIST ..............................................................17
REPLACEMENT PARTS LIST ............................................................... 18
SVC. Sheet .................................................................................................
- 2 -
PRODUCT SAFETY
IMPORTANT SAFETY NOTICE 1. Immediately before handling any semiconductor component or
This manual was prepared for use only by properly trained audiovisual service semiconductor-equipped assembly, drain off any electrostatic charge on the
technicians. When servicing this product, under no circumstances should the body by touching a known earth ground. Alternatively, obtain and wear a
original design be modified or altered without permission from LG Electronics commercially available discharging wrist strap device, which should be
Inc. All components should be replaced only with types identical to those in the removed for potential shock reasons prior to applying power to the unit under
original circuit and their physical location, wiring, and lead dress must conform test.
to original layout upon completion of repairs. If any fuse (or Fusible Resistor) in 2. After removing an electrical assembly equipped with ES devices, place the
this TV receiver is blown, replace it only with the factory specified fuse type and assembly on a conductive surface such as an ESD mat, to prevent
rating. When replacing a high wattage resistor (Oxide Metal Film Resistor, over electrostatic charge buildup or exposure of the assembly.
1W), keep the resistor 10mm away from PCB. Always keep wires away from 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
high voltage or high temperature parts. 4. Use only an anti-static solder removal device. Some solder removal devices
not classified as "anti-static" can generate electrical charges sufficient to
Special components are also used to prevent shock and fire hazard. damage ES devices.
These components are indicated by the letter "x" included in their component 5. Do not use freon-propelled chemicals. These can generate electrical charge
designators and are required to maintain safe performance. No deviations are sufficient to damage ES devices.
allowed without prior approval by LG Electronis Inc. Service work should be 6. Do not remove a replacement ES device from its protective package until
performed only after you are thoroughly familiar with these safety checks and immediately before you are ready to install it. (Most replacement ES devices
servicing guidelines. are packaged with leads electrically shorted together by conductive foam,
aluminum foil, or comparable conductive material.)
Circuit diagrams may occasionally differ from the actual circuit used. 7. Immediately before removing the protective material from the leads of a
This way, implementation of the latest safety and performance improvement replacement ES device, touch the protective material to the chassis or circuit
changes into the set is not delayed until the new service literature is printed. assembly into which the device will be installed.
CAUTION: Do not attempt to modify this product in any way. Caution: Be sure no power is applied to the chassis or circuit, and observe
Never perform customized installations without manufacturer's all other safety precautions.
approval.
Unauthorized modifications will not only void the warranty, but may 8. Minimize bodily motions when handling unpackaged replacement ES
lead to property damage or user injury. 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.)
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 instrument's 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 1M and 5.2M. 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 "chip" components. The following
techniques should be used to help reduce the incidence of component damage
caused by static electricity.
- 3 -
DESCRIPTION OF CONTROLS
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.
Only the remote control handset supplied will operate this set.
Remote control handset
POWER MUTE
1 Before you use the remote control handset, please install the bat-
teries. See the next page.
1 2 3
1. POWER
2 4 5 6 switches the set on from standby or off to standby.
7 8 9 2. NUMBER BUTTONS
MENU TV/AV switches the set on from standby or directly select a number.
3 0
3. MENU
selects a menu.
PR SLEEP
4 VOL
OK
VOL 4. D / E (Programme Up/Down)
selects a programme or a menu item.
Q.VIEW PR LIST switches the set on from standby.
5 F / G (Volume Up/Down)
adjusts the volume.
TEXT MIX INDEX adjusts menu settings.
i
OK
TIME REVEAL MODE
M accepts your selection or displays the current mode.
SIZE HOLD UPDATE
5. Q.VIEW
I/II PSM
returns to the previously viewed programme.
6
selects a favourite programme.
7
6. I/II
selects the language during dual language broadcast.
selects the sound output (option).
7. PSM (Picture Status Memory)
recalls your preferred picture setting.
- 4 -
8. MUTE
switches the sound on or off.
9. TV/AV
selects TV or AV monitor mode.
clears the menu from the screen.
switches the set on from standby.
POWER MUTE
10. SLEEP 8
sets the sleep timer.
1 2 3
11. LIST
displays the programme table. 4 5 6
12. TELETEXT BUTTONS (option) 7 8 9
These buttons are used for teletext. MENU TV/AV
For further details, see the `Teletext' section. 0 9
Note : In teletext mode, the SLEEP, LIST and Q.VIEW buttons are 10
PR SLEEP
used for teletext function.
VOL VOL
OK
Battery installation Q.VIEW PR LIST
11
The remote control handset is powered by two AAA type batteries.
TEXT MIX INDEX
To load the batteries, turn the remote control handset over and i 12
open the battery compartment. Install two batteries as indicated by TIME REVEAL MODE
the polarity symbols ( + and - ) marked inside the compartment. M
SIZE HOLD UPDATE
I/II PSM
Note : To avoid damage from possible battery leakage, remove the
batteries if you do not plan to use the remote control handset for an
extended period of time.
- 5 -
Side panel
6
PR
5
VOL
4
OK
9 10
MENU
3
TV/AV
2
7
8 H/P S-VIDEO VIDEO MONO L AUDIO R
ON/OFF
1 AV2
Back panel
1. POWER (ON/OFF) 7. POWER/STANDBY INDICATOR ( )
switches the set on from standby or off to illuminates red in standby mode.
standby. illuminates green when the set is switched on.
2. TV/AV 8. REMOTE CONTROL SENSOR
selects TV or AV monitor mode.
clears the menu from the screen. 9. HEADPHONE SOCKET
switches the set on from standby. Connect the headphone plug to this socket.
3. MENU
10. AUDIO/VIDEO IN SOCKETS (AV2)
selects a menu.
Connect the audio/video out sockets of exter-
nal equipment to these sockets.
4. OK
accepts your selection or displays the current
S-VIDEO/AUDIO IN SOCKETS (SAV)
mode.
Connect the video out socket of an S-VIDEO
VCR to the S-VIDEO socket.
5. F / G (Volume Up/Down) Connects the audio out sockets of the S-
adjusts the volume. VIDEO VCR to the audio sockets as in AV2.
adjusts menu settings.
6. D / E (Programme Up/Down)
selects a programme or a menu item.
switches the set on from standby.
- 6 -
ADJUSTMENT INSTRUCTION
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!5c of temperature and 65!10% of relative humidity if
C
there is no specific designation.
(4) The set must be operated for 15 minutes preliminarily
before adjustment if there is no specific designation.
[ `Heat Run' must be performed with the full white signal or TV
noise signal in the internal part of the set.
[ The time for `Heat Run' can be changed owing to production
plan.
[ Line Test condition (TV): standard color signal 65!1dBuV
3.RGB LEVEL adjustment.
3-1. Required Test Equipment
(1) A pattern generator(408NPS-READER); It is possible for
10 step.
(2) A SVC communicator
3-2. Preparation for Adjustment
(1) Press the ADJ key on the remote control hand set to select
RGV LEVEL.
(2) Select the mode by using VOL+ KEY.
(3) Adjust the ninth and tenth STEP LEVEL to the undivided
spot by using VOL+/- of R-Drive mode.
(4) Adjust the G-DRIVE,B-DRIVE with the same method.
(5) Press the OK key to return if the adjustment is completed.
- 7 -
4. Option 1 data setting (200PR ~ A2 ST:1bit, SYS:2bit composition)
OPTION OPTION
200PR TEXT I/II SV TOP SCART A2 ST SYS 200PR TEXT I/II SV TOP SCART A2 ST SYS
Data Data
0 0 0 0 0 0 0 0 32 0 0 1 0 0 0 0
1 0 0 0 0 0 0 1 33 0 0 1 0 0 0 1
2 0 0 0 0 0 0 2 34 0 0 1 0 0 0 2
3 0 0 0 0 0 0 3 35 0 0 1 0 0 0 3
4 0 0 0 0 0 1 0 36 0 0 1 0 0 1 0
5 0 0 0 0 0 1 1 37 0 0 1 0 0 1 1
6 0 0 0 0 0 1 2 38 0 0 1 0 0 1 2
7 0 0 0 0 0 1 3 39 0 0 1 0 0 1 3
8 0 0 0 0 1 0 0 40 0 0 1 0 1 0 0
9 0 0 0 0 1 0 1 41 0 0 1 0 1 0 1
10 0 0 0 0 1 0 2 42 0 0 1 0 1 0 2
11 0 0 0 0 1 0 3 43 0 0 1 0 1 0 3
12 0 0 0 0 1 1 0 44 0 0 1 0 1 1 0
13 0 0 0 0 1 1 1 45 0 0 1 0 1 1 1
14 0 0 0 0 1 1 2 46 0 0 1 0 1 1 2
15 0 0 0 0 1 1 3 47 0 0 1 0 1 1 3
16 0 0 0 1 0 0 0 48 0 0 1 1 0 0 0
17 0 0 0 1 0 0 1 49 0 0 1 1 0 0 1
18 0 0 0 1 0 0 2 50 0 0 1 1 0 0 2
19 0 0 0 1 0 0 3 51 0 0 1 1 0 0 3
20 0 0 0 1 0 1 0 52 0 0 1 1 0 1 0
21 0 0 0 1 0 1 1 53 0 0 1 1 0 1 1
22 0 0 0 1 0 1 2 54 0 0 1 1 0 1 2
23 0 0 0 1 0 1 3 55 0 0 1 1 0 1 3
24 0 0 0 1 1 0 0 56 0 0 1 1 1 0 0
25 0 0 0 1 1 0 1 57 0 0 1 1 1 0 1
26 0 0 0 1 1 0 2 58 0 0 1 1 1 0 2
27 0 0 0 1 1 0 3 59 0 0 1 1 1 0 3
28 0 0 0 1 1 1 0 60 0 0 1 1 1 1 0
29 0 0 0 1 1 1 1 61 0 0 1 1 1 1 1
30 0 0 0 1 1 1 2 62 0 0 1 1 1 1 2
31 0 0 0 1 1 1 3 63 0 0 1 1 1 1 3
- 8 -
OPTION OPTION
200PR TEXT I/II SV TOP SCART A2 ST SYS 200PR TEXT I/II SV TOP SCART A2 ST SYS
Data Data
64 0 1 0 0 0 0 0 110 0 1 1 0 1 1 2
65 0 1 0 0 0 0 1 111 0 1 1 0 1 1 3
66 0 1 0 0 0 0 2 112 0 1 1 1 0 0 0
67 0 1 0 0 0 0 3 113 0 1 1 1 0 0 1
68 0 1 0 0 0 1 0 114 0 1 1 1 0 0 2
69 0 1 0 0 0 1 1 115 0 1 1 1 0 0 3
70 0 1 0 0 0 1 2 116 0 1 1 1 0 1 0
71 0 1 0 0 0 1 3 117 0 1 1 1 0 1 1
72 0 1 0 0 1 0 0 118 0 1 1 1 0 1 2
73 0 1 0 0 1 0 1 119 0 1 1 1 0 1 3
74 0 1 0 0 1 0 2 120 0 1 1 1 1 0 0
75 0 1 0 0 1 0 3 121 0 1 1 1 1 0 1
76 0 1 0 0 1 1 0 122 0 1 1 1 1 0 2
77 0 1 0 0 1 1 1 123 0 1 1 1 1 0 3
78 0 1 0 0 1 1 2 124 0 1 1 1 1 1 0
79 0 1 0 0 1 1 3 125 0 1 1 1 1 1 1
80 0 1 0 1 0 0 0 126 0 1 1 1 1 1 2
81 0 1 0 1 0 0 1 127 0 1 1 1 1 1 3
82 0 1 0 1 0 0 2 128 1 0 0 0 0 0 0
83 0 1 0 1 0 0 3 129 1 0 0 0 0 0 1
84 0 1 0 1 0 1 0 130 1 0 0 0 0 0 2
85 0 1 0 1 0 1 1 131 1 0 0 0 0 0 3
86 0 1 0 1 0 1 2 132 1 0 0 0 0 1 0
87 0 1 0 1 0 1 3 133 1 0 0 0 0 1 1
88 0 1 0 1 1 0 0 134 1 0 0 0 0 1 2
89 0 1 0 1 1 0 1 135 1 0 0 0 0 1 3
90 0 1 0 1 1 0 2 136 1 0 0 0 1 0 0
91 0 1 0 1 1 0 3 137 1 0 0 0 1 0 1
92 0 1 0 1 1 1 0 138 1 0 0 0 1 0 2
93 0 1 0 1 1 1 1 139 1 0 0 0 1 0 3
94 0 1 0 1 1 1 2 140 1 0 0 0 1 1 0
95 0 1 0 1 1 1 3 141 1 0 0 0 1 1 1
96 0 1 1 0 0 0 0 142 1 0 0 0 1 1 2
97 0 1 1 0 0 0 1 143 1 0 0 0 1 1 3
98 0 1 1 0 0 0 2 144 1 0 0 1 0 0 0
99 0 1 1 0 0 0 3 145 1 0 0 1 0 0 1
100 0 1 1 0 0 1 0 146 1 0 0 1 0 0 2
101 0 1 1 0 0 1 1 147 1 0 0 1 0 0 3
102 0 1 1 0 0 1 2 148 1 0 0 1 0 1 0
103 0 1 1 0 0 1 3 149 1 0 0 1 0 1 1
104 0 1 1 0 1 0 0 150 1 0 0 1 0 1 2
105 0 1 1 0 1 0 1 151 1 0 0 1 0 1 3
106 0 1 1 0 1 0 2 152 1 0 0 1 1 0 0
107 0 1 1 0 1 0 3 153 1 0 0 1 1 0 1
108 0 1 1 0 1 1 0 154 1 0 0 1 1 0 2
109 0 1 1 0 1 1 1 155 1 0 0 1 1 0 3
- 9 -
OPTION OPTION
200PR TEXT I/II SV TOP SCART A2 ST SYS 200PR TEXT I/II SV TOP SCART A2 ST SYS
Data Data
156 1 0 0 1 1 1 0 202 01 1 0 0 1 0 2
157 1 0 0 1 1 1 1 203 1 1 0 0 1 0 3
158 1 0 0 1 1 1 2 204 1 1 0 0 1 1 0
159 1 0 0 1 1 1 3 205 1 1 0 0 1 1 1
160 1 0 1 0 0 0 0 206 1 1 0 0 1 1 2
161 1 0 1 0 0 0 1 207 1 1 0 0 1 1 3
162 1 0 1 0 0 0 2 208 1 1 0 1 0 0 0
163 1 0 1 0 0 0 3 209 1 1 0 1 0 0 1
164 1 0 1 0 0 1 0 210 1 1 0 1 0 0 2
165 1 0 1 0 0 1 1 211 1 1 0 1 0 0 3
166 1 0 1 0 0 1 2 212 1 1 0 1 0 1 0
167 1 0 1 0 0 1 3 213 1 1 0 1 0 1 1
168 1 0 1 0 1 0 0 214 1 1 0 1 0 1 2
169 1 0 1 0 1 0 1 215 1 1 0 1 0 1 3
170 1 0 1 0 1 0 2 216 1 1 0 1 1 0 0
171 1 0 1 0 1 0 3 217 1 1 0 1 1 0 1
172 1 0 1 0 1 1 0 218 1 1 0 1 1 0 2
173 1 0 1 0 1 1 1 219 1 1 0 1 1 0 3
174 1 0 1 0 1 1 2 220 1 1 0 1 1 1 0
175 1 0 1 0 1 1 3 221 1 1 0 1 1 1 1
176 1 0 1 1 0 0 0 222 1 1 0 1 1 1 2
177 1 0 1 1 0 0 1 223 1 1 0 1 1 1 3
178 1 0 1 1 0 0 2 224 1 1 1 0 0 0 0
179 1 0 1 1 0 0 3 225 1 1 1 0 0 0 1
180 1 0 1 1 0 1 0 226 1 1 1 0 0 0 2
181 1 0 1 1 0 1 1 227 1 1 1 0 0 0 3
182 1 0 1 1 0 1 2 228 1 1 1 0 0 1 0
183 1 0 1 1 0 1 3 229 1 1 1 0 0 1 1
184 1 0 1 1 1 0 0 230 1 1 1 0 0 1 2
185 1 0 1 1 1 0 1 231 1 1 1 0 0 1 3
186 1 0 1 1 1 0 2 232 1 1 1 0 1 0 0
187 1 0 1 1 1 0 3 233 1 1 1 0 1 0 1
188 1 0 1 1 1 1 0 234 1 1 1 0 1 0 2
189 1 0 1 1 1 1 1 235 1 1 1 0 1 0 3
190 1 0 1 1 1 1 2 236 1 1 1 0 1 1 0
191 1 0 1 1 1 1 3 237 1 1 1 0 1 1 1
192 1 1 0 0 0 0 0 238 1 1 1 0 1 1 2
193 1 1 0 0 0 0 1 239 1 1 1 0 1 1 3
194 1 1 0 0 0 0 2 240 1 1 1 1 0 0 0
195 1 1 0 0 0 0 3 241 1 1 1 1 0 0 1
196 1 1 0 0 0 1 0 242 1 1 1 1 0 0 2
197 1 1 0 0 0 1 1 243 1 1 1 1 0 0 3
198 1 1 0 0 0 1 2 244 1 1 1 1 0 1 0
199 1 1 0 0 0 1 3 245 1 1 1 1 0 1 1
200 1 1 0 0 1 0 0 246 1 1 1 1 0 1 2
201 1 1 0 0 1 0 1 247 1 1 1 1 0 1 3
- 10 -
OPTION
200PR TEXT I/II SV TOP SCART A2 ST SYS
Data
248 1 1 1 1 1 0 0
249 1 1 1 1 1 0 1
250 1 1 1 1 1 0 2
251 1 1 1 1 1 0 3
252 1 1 1 1 1 1 0
253 1 1 1 1 1 1 1
254 1 1 1 1 1 1 2
255 1 1 1 1 1 1 3
5. Option2 data(ACMS~BBACK:1bit,LANG:3bit)
OPTION OPTION
ACMS VOL BBACK LANG ACMS VOL BBACK LANG
Data Data
0 0 0 0 0 32 1 0 0 0
1 0 0 0 1 33 1 0 0 1
2 0 0 0 2 34 1 0 0 2
3 0 0 0 3 35 1 0 0 3
4 0 0 0 4 36 1 0 0 4
5 0 0 0 5 37 1 0 0 5
6 0 0 0 6 38 1 0 0 6
7 0 0 0 7 39 1 0 0 7
8 0 0 1 0 40 1 0 1 0
9 0 0 1 1 41 1 0 1 1
10 0 0 1 2 42 1 0 1 2
11 0 0 1 3 43 1 0 1 3
12 0 0 1 4 44 1 0 1 4
13 0 0 1 5 45 1 0 1 5
14 0 0 1 6 46 1 0 1 6
15 0 0 1 7 47 1 0 1 7
16 0 1 0 0 48 1 1 0 0
17 0 1 0 1 49 1 1 0 1
18 0 1 0 2 50 1 1 0 2
19 0 1 0 3 51 1 1 0 3
20 0 1 0 4 52 1 1 0 4
21 0 1 0 5 53 1 1 0 5
22 0 1 0 6 54 1 1 0 6
23 0 1 0 7 55 1 1 0 7
24 0 1 1 0 56 1 1 1 0
25 0 1 1 1 57 1 1 1 1
26 0 1 1 2 58 1 1 1 2
27 0 1 1 3 59 1 1 1 3
28 0 1 1 4 60 1 1 1 4
29 0 1 1 5 61 1 1 1 5
30 0 1 1 6 62 1 1 1 6
31 0 1 1 7 63 1 1 1 7
- 11 -
6. Option3 data(IIC AFT~CH+AU:1bit)
OPTION
HiDEV TSS IIC T MONO CH+AUS
Data
0 0 0 0 0 0
1 0 0 0 0 1
2 0 0 0 1 0
3 0 0 0 1 1
4 0 0 1 0 0
5 0 0 1 0 1
6 0 0 1 1 0
7 0 0 1 1 1
8 0 1 0 0 0
9 0 1 0 0 1
10 0 1 0 1 0
11 0 1 0 1 1
12 0 1 1 0 0
13 0 1 1 0 1
14 0 1 1 1 0
15 0 1 1 1 1
16 1 0 0 0 0
17 1 0 0 0 1
18 1 0 0 1 0
19 1 0 0 1 1
20 1 0 1 0 0
21 1 0 1 0 1
22 1 0 1 1 0
23 1 0 1 1 1
24 1 1 0 0 0
25 1 1 0 0 1
26 1 1 0 1 0
27 1 1 0 1 1
28 1 1 1 0 0
29 1 1 1 0 1
30 1 1 1 1 0
31 1 1 1 1 1
- 12 -
TROUBLE SHOOTING
1. General Features
No. Symptom Cause Check Point
1 No screen Input error of inverter connector 1) Bend the pin legs of P802B connector -> recheck them
2) Check and repair IC805 SI4925.
P1 and Pin 50 connector 1) Check and fix P1 connector
being slipped out
Cracked components and 1)Check and repair tuner board and main board
soldering at tuner board 2)Solder Q403
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 3) Check the connector input.
2. TV and external input
No. Symptom Cause Check Point
1 No sound Defective Reset IC of IC604. 1) Check volume and speaker.
- Speaker Defective MSP3410G of IC601. - Sound comes out only when being inputted into Audio
- Earphone Defective B+(8V) of IC604. L/R.
2) Check after replacing IC603.
3) Replace IC601.
4) Check and replace B+ of IC604.
2 Video color beat noise Earphone shield case being touched. Check the mould of shield and SJ209, Replace shield case.
Soldering IC501. 1) Check signal of Video input.
2) Check signal of R.G.B output.
3) Re-soldering
- 13 -
ML-024B CHASSIS BLOCK DIAGRAM
5V
TO MODULE(50P)
TO MODULE(50P)
POWER H/V Sync
Enable,CLK R(8) G(8) B(8)
(SMPS)
INVEERTER 5.0V
15V
EEP SCL1/SDA1 H/V R/G/B/FB
6-LAMP OUT Assay EEP
(7mA/EA) ROM
ROM IC100 SCL/SDA
IC501 IC502
INV-On/Off MICOM / TXT
OSD
(FROM MICOM) 6.0MHz CVBS(From IC352) SCALER(Format Converter)
ST-BY
3.3V/2.5V LG8801
RF V.
NTSC/PAL/SECAM Decoder with Analog
CAP./TXT YPbPr/RGB Input and Digital YCbCr /Digital
(R/G/B/FB) RGB Input A/V V.
=============================== IC352
Video Video
S/W S-Y/C
SCART R/G/B/FB CXA2040
15V SCART V.
15V
INVERTER 8.0V 5.0V
MSP34** SCL/SDA
CVBS(To MJ201)
IC601 RESET 4.2V
33V MULTISTANDARD CVBS(To Micom )
SIF
3W SOUND PROCESSOR
TUNER AUDIO MONO RF V.
R/Y(8) G/U(8) B/V(8)
- 14 -
MSP-34XX
A/V L,R
POWER IC602 SIF : 2, SCART : 4 AFT
LA4282 MONO : 1 DVD L/R
DC -DC Converter SCL/SDA IC701 SIF
I2S : 2
S-T 5V/5V S. L/R
------18.432MHz--- AD Converter AUDIO
3W 3.3V
MICOM, TUNER L-SPK / WOOFER AD9883
SW2
H/P, I2S
BLOCK DIAGRAM
SCART OUT : 2 SW1
B+
S-T 5V/3.3V S. L/R H/P L,R
Y/U/V IF-0UT TUNER
LG8801, MODULE,
AD9883,MICOM ADC
12V(DC)
33V
S. L/R(In/Out) SDA
YUV
MJ201 SCL
H/P L,R A/V L,R V. OUT A/V L,R OUT
SCART V. RF V. S-V. A/V V. CTR
DVD L/R
AGC
....
R/G/B/FB L/R in DVD(Audio) DVD/DTV Input
DC In H/P S-Input VIDEO Input VIDEO Output
TV L/R out (480I/480P) ANT (RF) Input
CVBS in ID-1
MEMO
- 15 -
500
540
430
520
400
450
- 16 -
120
112
EXPLODED VIEW
510
420
120
310
410
530
330
300
340
EXPLODED VIEW PARTS LIST
No. PART NO. DESCRIPTION
112 6304VT2011A LCD MODULE,LC201V1-A1 TFT COLOR 20.1 640*RGB*480 400CD/M2 8BIT
120 120-D44E SPEAKER,FULLRANGE ,G705/080701A 4OHM 3/5W 80DB 70X50MM
300 3091V00A20R CABINET ASSEMBLY,RZ-20LA31 STEREO ML024B .
310 5020V00552G BUTTON,CONTROL PR-20LA30 HF-380 7 KEY METALIC BLUE
330 5020V00553D BUTTON,POWER RP-15LA31 NON 1 KEY SET
340 3091V00A19K CABINET ASSEMBLY,RZ-20LA31 STEREO ML024B .
400 3809V00A10Z BACK COVER ASSEMBLY,RZ-20LA31 1SCART 3850VC0002F
410 4811V00019A BRACKET ASSEMBLY,STAND RE-20LA30 NON .
420 4950V00081B METAL,SUPPORTER SUS HINGE FIXER
430 3550V00202A COVER,A/V ABS RN-20LA30 .
450 4950V00079B METAL,FRAME SBHG ML024B 20LA31
500 4950V00050J METAL,SHIELD SBHG RZ-20LA31
510 6871VSMA74A PWB(PCB) ASSEMBLY,SUB ,SUB MF-002A CTL ASSY RE/RL/RN-20LA30
520 6871VMMP73A PWB(PCB) ASSEMBLY,MAIN ML024B
530 6871VSMV36A PWB(PCB) ASSEMBLY,SUB POWER ML024B 20INCH POWER ASSY
540 6633VA0003P INVERTER ASSEMBLY,15V NON ECT FRONTEC 6633VA0003JVE
- 17 -
REPLACEMENT PARTS LIST
For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film
charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film
in the P/No. means as follows; CE : Electrolytic RN : Metal Film
RF : Fusible
LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION
Q803 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC
IC
IC101 0IAL241610B IC, AT24C16A-10PI-2.7 8PIN DIP ST DIODE
IC102 0IFA752700A IC, KA75270Z 3 TP RE-SET IC MC-007
D100 0DD181009AB DIODE, KDS181 TP KEC - 85V - - - 300MA
IC351 0IMCRFA010A IC, KA7809R, 2P D-PAK, R/TP REGULATOR
D601 0DD181009AB DIODE, KDS181 TP KEC - 85V - - - 300MA
IC352 0ISO204000A IC, 32P,QFP BK IIC BUS VIDEO S/W
D602 0DD181009AB DIODE, KDS181 TP KEC - 85V - - - 300MA
IC601 0IMCRMN011D IC, MSP3410G QA B8 V3 MICRONAS 80P
D801 0DD181009AB DIODE, KDS181 TP KEC - 85V - - - 300MA
IC602 0ISA428200A IC, LA4282 12S 2CHX10W AUDIO AMP - - -
D802 0DD100009AM DIODE,RECTIFIERS EU1ZV(1) TP SANKEN
IC603 0IKE704200J IC, KIA7042AF SOT-89 TP 4.2V VOLTAGE
D807 0DD181009AB DIODE, KDS181 TP KEC - 85V - - - 300MA
IC604 0IMCRFA009A IC, KA78M08RTM,2P D-PAK, R/TP REGULATOR
D896 0DD410009AA DIODE,RECTIFIERS SCHOTTKY,BAT 41 TP
IC801 0ITC786000A IC, SI786 28SSOP TP DUAL-OUTPUT
D897 0DD410009AA DIODE,RECTIFIERS SCHOTTKY,BAT 41 TP
IC905 0ISA428200A IC, LA4282 12S 2CHX10W AUDIO AMP - - -
D898 0DD410009AA DIODE,RECTIFIERS SCHOTTKY,BAT 41 TP
Q101 0IFA270000A IC, 3P TP LEVEL SHIFT 60V/0.2A,MC007A
D899 0DD410009AA DIODE,RECTIFIERS SCHOTTKY,BAT 41 TP
Q102 0IFA270000A IC, 3P TP LEVEL SHIFT 60V/0.2A,MC007A
ZD200 0DZRM00178A DIODE, R/TP SMD 0.2W 5.1V 5MA -PF
TRANSISTOR ZD201 0DZRM00178A DIODE, R/TP SMD 0.2W 5.1V 5MA -PF
ZD202 0DZRM00178A DIODE, R/TP SMD 0.2W 5.1V 5MA -PF
IC2 0TF492509AA TR, SI4925DY TP TEMIC 30V 6.1A SO-8
ZD203 0DZRM00178A DIODE, R/TP SMD 0.2W 5.1V 5MA -PF
IC802 0TFVI80001A TR, SI4808DY R/TP SO-8 30V 7.5A
ZD204 0DZRM00178A DIODE, R/TP SMD 0.2W 5.1V 5MA -PF
IC803 0TFVI80001A TR, SI4808DY R/TP SO-8 30V 7.5A
ZD205 0DZRM00178A DIODE, R/TP SMD 0.2W 5.1V 5MA -PF
IC804 0TFVI80005A TR, SI4963DY R/TP SO-8 -20V 6.2A
ZD206 0DZRM00178A DIODE, R/TP SMD 0.2W 5.1V 5MA -PF
IC805 0TF492509AA TR, SI4925DY TP TEMIC 30V 6.1A SO-8
ZD220 0DZRM00178A DIODE, R/TP SMD 0.2W 5.1V 5MA -PF
Q1 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC
ZD221 0DZRM00178A DIODE, R/TP SMD 0.2W 5.1V 5MA -PF
Q100 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC
ZD222 0DZRM00178A DIODE, R/TP SMD 0.2W 5.1V 5MA -PF
Q1101 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC
ZD400 0DZ330009BA DIODE, ZENERS HZT33 TAPING
Q1102 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC
Q1103 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC CAPACITOR
Q200 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC
C10 0CE227DF618 220UF STD 16V M FL TP5
Q353 0TR150400BA TR, CHIP 2SA1504S(ASY) KEC
C101 0CE107BF618 100UF KME 16V M FL TP5
Q354 0TR150400BA TR, CHIP 2SA1504S(ASY) KEC
C113 0CE107BF618 100UF KME 16V M FL TP5
Q402 0TR150400BA TR, CHIP 2SA1504S(ASY) KEC
C209 0CE476DF618 47UF STD 16V M FL TP5
Q403 0TR150400BA TR, CHIP 2SA1504S(ASY) KEC
C211 0CE106DF618 10UF STD 16V M FL TP5
Q404 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC
C212 0CE227DD618 220UF STD 10V M FL TP5
Q405 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC
C219 0CE226DF618 22UF STD 16V M FL TP5
Q406 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC
C220 0CE226DF618 22UF STD 16V M FL TP5
Q407 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC
C281 0CE105BK618 1UF KME 50V M FL TP5
Q502 0TR150400BA TR, CHIP 2SA1504S(ASY) KEC
C282 0CE105BK618 1UF KME 50V M FL TP5
Q510 0TR150400BA TR, CHIP 2SA1504S(ASY) KEC
C289 0CE104DK618 0.1000UF STD 50V M FL TP5
Q551 0TR150400BA TR, CHIP 2SA1504S(ASY) KEC
C351 0CE227DF618 220UF STD 16V M FL TP5
Q560 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC
C353 0CE475DK618 4.7UF STD 50V 20% FL TP 5
Q602 0TR150400BA TR, CHIP 2SA1504S(ASY) KEC
C354 0CE106DF618 10UF STD 16V M FL TP5
Q603 0TR150400BA TR, CHIP 2SA1504S(ASY) KEC
C356 0CE106DF618 10UF STD 16V M FL TP5
Q604 0TR150400BA TR, CHIP 2SA1504S(ASY) KEC
C357 0CE106DF618 10UF STD 16V M FL TP5
Q605 0TR150400BA TR, CHIP 2SA1504S(ASY) KEC
C361 0CE477BF618 470UF KME 16V M FL TP5
Q651 0TR150400BA TR, CHIP 2SA1504S(ASY) KEC
C362 0CE107DF618 100UF STD 16V M FL TP5
Q801 0TR387500AA TR, CHIP 2SC3875S(ALY) KEC
◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo