Atec AV32OPD User manual

INDEX
1. Safety Precautions.
2. Product Specification.
-General Specification
-RGB/DVI Spec
-DTV Mode Spec
-CHASSIS / FUNTION General Spec.
-Engineering Spec.
3. Service Mode Adjustment.
4. Firmware upgrade
5. Adjustment Standard
6. Remote Controller(PAL/SECAM)
7. Trouble Shooting
- POWER Trouble
- SCREEN Trouble
- SOUND Trouble
8. Block Diagram

9. Circuit Diagram
- MAIN BOARD
- POWER BOARD (SMPS)
10. BOM (Parts List)
- MAIN BOARD
- POWER BOARD (SMPS)
11. Assembly Diagram
1. Safety precautions
* General details
1) When providing service, pay attention to the basic wiring and if you see a short circuit, you must replace
all parts overheated or damaged by the short circuit.
2) After the service, check if the all elements for protection with insulation layer, insulation paper and shield
R-C composite element are well assembled.
3) When not watching the TV for a long period of time, unplug the power cord.
4) Because the high voltage goes through the power (SMPS) when the TV is operating, it is dangerous from
electric shock to operate the TV with the back cover open. Repairing must only be done by a repair
technician who has adequate knowledge about the high voltage.
5) After completing the service, the repair technician must inspect the following electric current leakage to
protect the user from electric shock.
6) Always check if all the internal protection devices are installed. If there is a protection plate, directly
install it.
7) After completely assembling the set, plug the AC line cord to the power outlet. Set the power switch to on
and then turn it off. Measure the current between the earth (GND) and antenna, metal parts, projected
metal parts such as screw heads. The measured current should not exceed 3.5mA.

8) Never change the design or add to the design of the device or electric circuit for this set. If you add to
the design, it can cause danger to the safety. Also if you change the design or add to the design, the
manufacturer’s warranty would be ineffective.
9) If the parts, material or the wiring seem to be overheated or damaged, immediately replace the parts in
accordance with the original specification. Always understand the root cause of the overheating or
damage and correct the danger factors if possible.
10) Some electric circuit parts and device parts have special safety related characteristics that cannot be
judged with the eye. If you replace the parts with a different part with higher voltage, wattage etc, it will
lose the safety characteristics and protection function. Therefore you must use the same part as the one
installed as much as possible.
11) After the repair, always check if the screw, part and wiring are correctly installed. Check if the adjacent
area of the repaired part is damaged.
12) There are some semiconductor devices that can be easily damaged by electricity. When handling these
parts, use the static electricity detection device (ESD) to remove the electrode in the human body.
* Electric current leakage test (Cold Check)
1) Unplug the AC power and connect the ends of the plug with a wire.
2) Turn on the power switch.
3) Connect one end of the insulation tester on one of the leads and connect the other lead to an exposed
metallic part such as antenna, screw, variable adjustor axis etc. for measurement. The resistance value of
the exposed metal part that is connected to the chassis or not connected to the chassis must be infinite
(∞).
* Electric current leakage test (Hot Check)
1) Directly plug the power to the power outlet.
(At this time, do not use the insulation transformer during the test.)
2) Connect one side of the 1.0KΩ, 10W resistance to the exposed metal part of the TV and earth the other
side(location where it is easy to earth such as water pipe etc.) (Refer to the fig.)
3) Measure the voltage of both ends by using the AC voltage meter (1000Ω volt to higher sensitivity).
4) Measure the voltage of each exposed part of the TV.
5) Switch and plug the power plug (opposite electrode) and repeat the measurement.

6) The voltage should not exceed 0.75V in any location and the current leakage must not exceed 0.75mA.
* service precautions
1) When inserting the part or circuit board, you must keep the lead wire fixed to the end before soldering.
2) When inserting the high power resistance, leave about 10mm clearance from the board (metal oxidation
coated resistance or metal coated resistance).
3) Parts with high voltage or high temperature must be kept far from the lead wire.
4) For this chassis, use the cold chassis or insulation transformer for the safety. When repairing the power part,
always use the insulation transformer.
5) When operating the TV, do not connect or remove the wire.
6) Marked parts are important parts to maintain the safety of the part. Therefore, when exchanging the part,
always use the designated part.
S
2. Product Specification.
* Scope
This specification applies to all LCD TV models with VCB4430 chassis.
* Operating condition
1) Surrounding temperature: 25℃ ± 2℃
2) Relative humidity: 65% ± 10%
3) Power voltage (AC 110 – 240V, 50/60Hz)
4) For measurement, pre-operate the TV for more than 15 minutes.
◆ General Specification.

- AV320PD
32”
PC Analog RGB 15 pin D-Sub Input
SCART(half)
Composite Input * 2
S-Video Input * 1
Component Input * 1
Video
HDMI Input
Composite RCA L/R Input * 2
SCART(half)
Component RCA L/R Input *1
Headphone Output * 1
In/Out
Audio
PC/DVI Audio Input * 1
Antenna 75Ω Coaxial cable
Color System PAL/SECAM
Sound System B, G, D, K, I, L(for EU)
Stereo Type Nicam stereo, Nicam mono, mono, A2
RF Signal
Text TTX 256 page
Power Consumption 160 Watts
Power Save Mode Less than 5 Watts
Speaker 10 Watts *2
Plug & Play DDC 1/2 B
Screen Control 16 Colour On Screen Display Menu, Bit Map
Remote Controller Yes
Net 20.1Kg Weight
Gross 24.6Kg
Others
Dimension 932(W) * 238(D) *567(H)cm : Speaker(stand include)
◆ RGB/DVI Mode Spec.
Resolution H
Frequency(KHz)
V
Frequency(Hz)
Pixel
Frequency(MHz)
Comment
640 * 350 31.469 70.087 25.175 IBM
640 * 480 31.469 59.94 25.175 IBM
640 * 480 35.000 66.667 30.24 MAC
640 * 480 37.861 72.809 29.765 VESA
640 * 480 37.500 75 31.5 VESA
720 * 400 31.469 70.087 28.332 IBM

800 * 600 35.156 56.25 36.0 VESA
800 * 600 37.879 60.317 40.0 VESA
800 * 600 48.077 72.188 50.0 VESA
800 * 600 46.875 75.0 49.5 VESA
832 * 624 49.726 74.551 57.284 MAC
1024 * 768 48.780 60.001 64.11 MAC
1024 * 768 48.363 60.004 65.0 VESA
1024 * 768 56.476 70.069 75.0 VESA
1024 * 768 60.241 74.927 81.724 MAC
1024 * 768 60.030 75.029 78.75 VESA
1152 * 864 67.500 75.0 104.993 VESA
1152 * 870 68.681 75.062 100.0 MAC
1280 * 768 47.700 60.0 80.136
1360 * 768 47.700 60.0 80.136
◆ DTV Mode Spec
Resolution H
Frequency(KHz)
V
Frequency(Hz)
Pixel
Frequency(MHz) Comment
720 * 480 15.735 59.94 13.500 SDTV,DVD 480i
720 * 576 15.735 50.0 13.595 SDTV,DVD 576i
720 * 480 31.469 59.94 25.175 SDTV, 480p
720 * 576 31.250 50.0 26.566 SDTV, 576p
1280 * 720 44.964 59.94 74.176 HDTV, 720p
1280 * 720 37.500 50.0 60.466 HDTV, 720p
1920 * 1080 33.750 60.0 74.25 HDTV, 1080i
1920 * 1080 28.125 50.0 70.723 HDTV, 1080i
◆ SHASSIS / FUNTION General Spec.
NO ITEM DESCRIPTION REMARK
1 MODEL NAME VCB4430
Marker LG Philips LCD 2 TARGET PANEL
Type LCD LC260W02 LC320W02
Type D-SUB 15p *1, HDMI * 1 3 RGB/HDMI
Frequency H:31∼80KHz, V:56∼75Hz

Type RCA Jack (Green, Blue, Red)*1
480i: 59.94/60Hz, 480p: 59.94/60Hz
765i:50Hz, 765p: 50Hz
4 COMPONENT
Mode
720p: 59.94/60Hz, 1080i: 50/59.94/60Hz
SD and HD
CVBS: RCA Jack(yellow)*1, VCB4430
Half SCART *1 VCB4430
Type
SVHS: Mini-Din 4P *1. Auto Select
5 VIDEO INPUT
System PAL, SECAM
6 AV OUTPUT Selected TV, Video and Audio Out through SCART EU
7 AUDIO INPUT 3.5Ф Phone Jack*2 for PC
8 AUDIO OUTPUT Connector for Internal *1
9 TUNER Din Connector * 1 (inter Bridge for sub tuner)
LOCAL MENU, SELECT(SOURCE), DOWN, UP, LEFT, RIGHT, POWER, LED 10 CONT
ROL REMOTE Infrared- Rays NEC Format
Dynamic/Standard/Mild/Game/;User PSM
User Brightness, Contrast, Color, Sharpness
CSM CSM/ Brightness/ Contrast
CSM Normal/Warm/User
PICTURE
User Red/Green/Blue
Effect Flat/Music/Movie/Speech/User
User Bass, Treble
Surround On/Off, Normal, Spatial
AVL On/Off
AUDIO
Balance L(-10)----0---- R(10)
PIP,
POP
Source, Swap, PIP size,
PIP position
PIP/POP/P
BP
On/Off ON
PBP Source, Swap
Language English/ Deutsch/Francois/Italiano/ Espanol EU
Language China, English HK
Transparency 50(1 ∼ 100)
Auto/16:9/14:9/4:3 AV/TV Aspect
4:3/16:9 PC
Factory Reset On/Off
11 OSD
GUI
Setup
Time Clock/Off Time/On Time/Audio off
PIP/PBP Mode Supporting
SUB
MAIN TV AV1 AV2 COMPONENT RGB HDMI
TV ⅹ ⅹ ⅹ ○ ○ ○
AV1 ⅹ ⅹ ○ ○ ○
AV2 ⅹ ⅹ ○ ○ ○
COMPONEN ○ ○ ○ ⅹ ⅹ

T
RGB ○ ○ ○ ⅹ ⅹ
HDMI ○ ○ ○ ⅹ ⅹ
◆ Engineering Specification
N
O
Item ription Remark Desc
Min Typ Max
For Audio V(Voltage)
11.4 12 12.6
For Stand-by 4.8 5 5.2 V
For Logic 5 5.4.8 2 V
1
POWER
SUPPLY
33
For Tuner 32.5 33 .5 V
DPMS Sync(V/H) VIDEO Power(V/A) state LED
Stand By, Sleep & Suspend Mode n/o ff Off/on & o ff O ≤ 3W Amber
2
POWER OFF - - ≤ 3w off
Typical 10Wrms + 10Wrms Volume: Adjust
3 Audio
Max s + 12Wrms olume: Max
POWER
12Wrm V
Response Frequency KHz10% 100Hz∼10
T.H.D 10%
Input 0.7Vrms
4 AMP
S/N 40dB
Type External
5 Speaker
Impedance 8Ω
System CAM PAL/SE
Tuning er System Frequency Synthesiz
1)VHF
Low: 46.25 ∼127.25 Hz M
High: 133.25 ∼ 361.25 MHz
2)UHF
Channel
Hz
367.25 ∼ 863.25 M
System PAL/SECAM
Tuning esizer System Frequency Synth
Channel 1)AIR
55.25 ∼ 801.25 MHz
2)CATV
6 TV System
5
73.25 ∼ 799.2 MHz
Video Level 0.7±0.15 V p-p 75ΩTermination
Sync Level 0.268±0.075 nation V p-p 75ΩTermi
Color Level 72 0.214±0.0 V p-p 75ΩTermination
7 AV
Audio Level put
0.7±0.1 V rms PC In

0.5±0.05 s TSC V rm N
0.4±0.05 V rms PAL
Video Cross-Talk 43 dB
3. S
u pres MENU + MUTE + I/II Button on remote controller.
SERVICE MENU VERSION
ervice mode Adjustment
Move to Factory Men sing
V1.0 Remarks
BLE MODE Do not change the value which is currently set.
BLE GAIN Do not change the value which is currently set.
BLE
BLE TILT Do not change the value which is currently set.
LTI CORING Do not change the value which is currently set. FAC LTI
LTI GAIN Do not change the value which is currently set.
CTI CORING Do not change the value which is currently set. FAC CTI
CTI GAIN Do not change the value which is currently set.
PEAK POS Do not change the value which is currently set.
PEAK NEG Do not change the value which is currently set.
FAC PEAK
ORING
PEAK C Do not change the value which is currently set.
BRI Do not change the value which is currently set.
CONT Do not change the value which is currently set.
VCTI
T
CB SA Do not change the value which is currently set.
CR SAT Do not change the value which is currently set.
TINT Do not change the value which is currently set.
R GAIN Do not change the value which is currently set.
G GAIN Do not change the value which is currently set.
SCART RGB
GAIN
B Do not change the value which is currently set.
6C R Do not change the value which is currently set.
6C G Do not change the value which is currently set.
6C B Do not change the value which is currently set.
6C M Do not change the value which is currently set.
6C Y Do not change the value which is currently set.
6C F Do not change the value which is currently set.
MSTAR
UM
SPECTR Do not change the value which is currently set.
R GAIN Do not change the value which is currently set.
G GAIN Do not change the value which is currently set.
B GAIN Do not change the value which is currently set.
R OFFSET Do not change the value which is currently set.
ADJUST
G OFFSET Do not change the value which is currently set.

B OFFSET Do not change the value which is currently set.
SUB CON Do not change the value which is currently set.
SUB BRI Do not change the value which is currently set.
AUTO COLOR Do not change the value which is currently set.
TTX AREA Do not change the value which is currently set.
TTX TOP Do not change the value which is currently set.
LANGUGAE Do not change the value which is currently set.
PANEL Do not change the value which is currently set.
TUNER Do not change the value which is currently set.
PIN ON Do not change the value which is currently set.
OPTION
CART s currently set.
S Do not change the value which i
RESET Used to reset to factory default
EDID/HDCP ON/OFF Used to transfer EDID/HDCP data..(NO/YES)
ISP ON/OFF Used to update the program. (NO/YES)
4.
2. Move to Factory Menu using Service Remote Controller or User Remote Controller.
Firmware upgrade
- How to use Download Program and Cable Connection.
PC Jig for VCT or MTV Target SET
Parallel
Cable
DSUB Cable
1. Turn on the POWER.

3. Uncompress the ISP_update_programmming.zip file.
4. T
rt95nt.exe when you are using Windows95 Operating System.
- setup_LptDrvDev Dev_v020201_XP_2000.exe
indows2000 Operating System.
5. E file.
========== CONTENT ====================================
########
------------------
Write Flash --------------------
here are two files in DRIVER folder.
- port95nt.exe : Execute po
_v020201_XP_2000.exe : Execute setup_LptDrv
When you are using W
dit the ISP\VCT\ISP.BAT
===================
echo ####################################
echo --------------------------
echo -----------
echo --------------------------------------------
REM vctidown -wf mst.bin
vctidown -wf -s2 ..\..\SrcCode\BinHex\VCB4430_1.bin

vctidown -rv > RdVer.txt
vctidown -rv > RdVer.txt
vctidown -rv > RdVer.txt
fc VctF2Ver.txt RdVer.txt
if errorlevel 1 goto FAIL
vctidown –rv
===============================================================
You should make \SrcCode\BinHex\VCB4430_1.bin folder and the name of Firmware(VCB4430
can be redefined by user. The name of the file in the folder and the file in ips.bat must be identical.
In addition, the firmware to be updated must be located in the folder of \SrcCode\BinHex.
Execute ISP\VCT\ISP.BAT.
_1.bin)
6.
- wing is shown:
own
If ISP Fail is shown, or the follo
*****VctF2Ver.txt
Boot loader Version: 16h,
***** RDVER.TXT
Boot loader Version: 03h
Then, edit ISP\VCT\VctF2Ver.txt. Change to 03h.
If the following is shown:
***** RDVER.TXT
Boot loader Version: 03h
When the value of 03h is different, then revise the value in the VctF2Ver.txt file to the one sh
on the screen (03h) and save.

7
5. Adjustment Standard
1. Sc
Th
2. S
1) ever,
ieen the power line
and input side of chassis and then start operation.
ust exactly follow the procedure. However, it may be modified considering the productivity.
3 temperature of
idity of 65±10%.
4 oltage of receiver should be maintained at 220V, 60Hz.
5 , the receiver should be started the operation prior to the adjustment for
about 15 minutes.
eration should be performed after receiving 100% White Pattern of pattern generator.
②
a separate signal generator in this MODE.
hen the screen is kept still more than 20 minutes, “After-image” around black level may occur
(especially for Digital pattern or Cross Hatch pattern which have clear white/black colors).
3. Adjustment Items
1) EDID (The Extended Display Identification Data)/DDC (Display Data Channel) download
2) AD9883A-Set Adjustment
. When download is complete, “success” will be shown on the screen.
ope
is standard is applicable to all the models of LCD TV with VCB4430 Chassis (main board).
pecification
Since this chassis is non-chargeable with insulated power, insulated-type transformer is not required. How
n order to protect the adjustment, it is recommended to use insulated-type transformer betw
2) The adjustment m
) Without any other specification, the adjustment should be performed under the surrounding
25±5℃ and the relative hum
) When adjustment, the input v
) Without any other specification
● The pre-op
● How to Enter Not Used Patten generator White Pattern
① Enter SETUP by pressing MENU KEY on the adjustment R/C.
After entering ISM MODE using arrow keys of R/C in the SETUP, select White to show 100% FULL WHITE
PATTERN.
* The set can be “Heatrun” without
(Caution) W

3) White Balance Adjustment
4) Main/Sub Color Adjustment
4. Adjustment
- EDID (The Extended Display Identification Data)/DDC (Display Data Channel) download
1) The information is exchanged without user’s command to PC or monitor since they are specified in VESA. In
other words, the function is made for “Plug and Play” which reconfigures user’s environment to be used in no
time while automatically communicating with monitor.
2) EDID DATA for DVI of VCB4430
EDID table
3) EDID DATA for RGV of VCB4430
EDID table =

5
1)
ern (The pattern type is shown in the
following figure and the caution should be used not to confused with 75% color bar which is a similar pattern) and
the level of output should be precisely adjusted within 0.7±0.1Vp-p).
. AD9883A-Set adjust
Introduction
Analog Adjustment for AD9883A-Set => This is a function for the optimal level of black and gain to be
automatically set from digital converter and RGB variation to be adjusted.
2) Used Equipment
Pattern Generator(capable of generating 720P Vertical 100% Color Bar Patt
<Figure 1> Adjustment Pattern: 720P Vertical Color Bar>
3) Adjustment Method
① Input 100% Vertical Color Bar Pattern (TVBAR_100) in 720P Mode which may be supported for Component
input, and then select Component1 or Component2 for input and “STANDARD” for image.
② Wait for more than a second after receiving signal and press S.SELECT on adjustment R/C (Service remote
controller) while selecting “WB Adjust” for automatic adjustment.
③ In case of abnormal adjustment, perform the re-adjustment after confirming Patter or adjustment condition.
6. Remote o AL/SE
④ When adjustment is done, exit the adjustment mode pressing S.SELECT.
C ntroller (P CAM)

A proper output mode of soun tched.
.(Custom, Standard, Music, Movi
EMARK
d can be selected as per the type of program being wa
e, Speech)
KEY FUNTION R
1 POWER Turns the display On or off
2 NUMBER Direct channel select. Direct page selection Teletext display.
3 TV/AV tton, It converts to TV input mode and, if you press and hold the bu
input mode will be switched.
4 PSM ferred picture setting. (Dynamic, Standard, Game,
Recalls your pre
Mild, User)
5 MENU Displays OSD Menu.
6
VOL ◀▶ SD
e sub-menu
Increases or decreases the volume. Also used to select the O
main menu, to select the OSD main menu, to select th
or to change the values in sub-menus.
7 TEXT ON
the TV picture, TV mode.
Changes Teletext mode. Only Teletext mode, text mode
superimposed on
8
e
n. Press the button again to exit the
TIME When viewing a TV program, press this button to display the tim
at the top right corner of the screen. Press the button again to
remove the display. In Teletext mode press the button to select
and hold or change a four-digit sub-page number. This is displayed
along the bottom of the scree
function.
9 INDEX rrent Page to the INDEX Page. Converts from the cu
10
at the top left corner of the
ge
umber. Press this button to view the updated Teletext
UPDATE Displays the TV picture on the screen while waiting for the new
Teletext page. The display will appear
screen. When the update page is available then display will chan
to the page n
page
11
TELETEXT
REEN key.
RED: Converts to the Page linked to the RED key.
GREEN: Converts to the Page linked to the G
YELLOW: Converts to the Page linked to the YELLOW key.

BLUE: Converts to the Page linked to the BLUE key.
12 INPUT Changes the screen size. PIP input source.
13 PIP rge), PBP1, PBP2
Changes the screen size. PIP(Small), PIP(La
screen change.
14 SLEEP Sets the sleep timer. The apparatus is automatically turned off
15 Swaps the main screen for a sub-screen (only in PIP, PBP mode) SWAP
16
ARC You can watch the LCD Display in various picture formats, Auto,
ess the ARC button to select
4:3, 16:9, 14:9, Zoom. Repeatedly pr
your chosen picture format.
17 PIP PR l
p.
Use this button when PIP Input is set to TV to perform PIP Channe
Down/U
18 POSITION rent corner locations. Changes the PIP sub-window to 4 diffe
PIP Position Change(PIP Mode only)
19 HOLD en
Maintain the Page content as currently displayed, if it has be
changed.
20 REVEAL Shows letters that are hidden (not displayed)
21 SIZE )even, though they are
included in the currently displayed Page
Selects letters that are hidden (not displayed
22 MODE Toggles between list mode and current. Text mode(FLOF,TOP or
normal)
23 MIX The teletext pages and the TV picture are displayed
simultaneously on both sides of the screen.
24
PR▲/▼,
TELETEXT
PREVIOUS/NEX
T PAGE
Press PR▲/▼ to change channels. Also used to select in the OSD
menu or select the channel providing teletext service.
25 OK Select sub-menu or fix user setting
26 MUTE Press to temporarily cut off the sound
27 SSM Recalls your preferred sound setting(Flat, Music, Movie, Speech,
User)
28 Dual I II Press to choose dual stereo or mono
29
PRE-PR It goes from the channel you are currently viewing back to the
channel you were previously watching(Quick Search View
Function.
30 SOURCE Selects the external input source.(TV, SCRAT, AV1, AV2, S-
VIDEO, COMPONENT, PC INPUT, HDMI)

7. Trouble Shooting
- Power Related Troubles
There is NO POWER (Front Panel LED OFF)
Connect Connector
Check the
Connectors
Related to Power
Check Standby
Voltage.
Check Chassis
(VCB4430) Connector.
J
701
PIN
(
1
)
5
V check
Replace CHASSIS(VCB3000)
Check Power ref.
Voltage:
Check Power CN401
in(1)~(2)
Check
Chassis(VCB3000)
U706(LT1117).
Check Standby
Voltage.
Pass
Fail
Fail
Fail
Fail
Pass
The Power of
SUB POWER
(master SW)
BOARD is OK?
Replace SUB POWER BOARD
Fail
Pass
Replace Power Board
Pass
Press POWER ON S/W

- Screen Related Troubles
There is NO IMAGE.
Connect Connector.
Check the
connectors Related
to Power and
Check Standby
Voltage.
Check Chassis(VCB4430)
Connector.
J701 PIN(1)
Check Power ref.
Voltage:
Check Power CN401
Check Standby
Voltage
Check Chassis(VCB4430)
U706(LT1117)
PIN
(
2
)
33
V check
Fail
Fail
Replace Power Board
Fail
Pass
CHASSIS(VCB4430)
The Power of
SUB POWER
BOARD is OK?
Replace SUB POWER BOARD.
Fail
Pass
Pass
Pass
Fail