AOC M19W531 Schematic

THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS.

Date 2005/10/19

Page 1 of 83

	CONTENTS
1 SPECIFICATION
1-1 General Specification …................................................….....……........................………....….		4
1-2 Feature Summary ...........................	...................... .............................……………...…………..	5
1-3 External Interface ..........................	...................... ...............................................................….	6
1-4 User Interface …......................... ..................................….....……........................………....….		12
1-5 External Mounting Requirements .......................................................……………...…………..		13
1-6 Environmental Requirements ..............................	...............................................................….	13
2 Precautions and Notices
2-1 Precaution of assembly. .......................................................................................................		13
2-2 Precaution of Operation.......................................................................................................		13
3 Operation
3-1 Operation of Remote Control Transmitter ...........................................................................…		14
3-2 Front panel controls .....................................................................................................………		15
3-3 OSD MENU Description ..................................................................................................…….		16
4 Trouble Shooting Chart
4-1 PANEL Trouble shooting………………….........................................................................……		20
4-2 Turn PDP on and Check .... ....................	..................................................................................	20
5 White-Balance Adjustment
5-1 Equipments list and prepare…………………………………………………………………………		25
5-2 Preparation and Adjustment process………………………………………………………………		25
6 DDC program and test
6-1 The list of Instrument ………………………………………………………….. ……………………		27
6-2 Program and test process ……………………………………………...………..…………………..		27
7 Flash Update
7-1 The list of Instrument……………………………...…………………………………………………..		28
7-2 The Operation explaining Flash Update ……………..………...…………………………………..		28
8 Software Platform Reference TV application
8-1 Introduction …………………………………………………………………………………………...		31
8-2 The Phobos Reference TV application …………………………………………………………...		31
9 Block diagram & Explain
9-1 PDP Block diagram and functions…………………………………………….…….. ………………		33
9-2 Image board block diagram and signal introduce/process……………………………………..…		34
10 Waveform of signal
10-1 Waveform of input signal…………………..….. ………..……. …..…. …. ………………..……		37
10-2 Signal waveform in the Image board …..….. ………..……. …..…. ……. ………………..……		40

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11 Check and Measure
11-1 Image board…………………..….. ……….. …. ……………..……... ……………………..……		43
11-2 SIDE AV board……………….…..…..……..….. ………..…….. …. ……………………..……		45
11-3 PDC board……………….…..…..……..….. ………..…….. . ……. ……………………..……		45
12 Mechanical Introduction
12-1	PDP internal view..…..….. ………..………. ……..……….….. …. ……………..……	46
12-2	Mechanical of cabinet front disassembly……. ……..……….….. …. ……………..……	47
12-3	Disassembly and assembly..…..….. ………..……. ……. ……. …. ……………..……	48
12-4	Block Wiring diagram..…..….. ………..……. ……. ……. ………… ……………..……	56
13 PCB LAYOUT
13-1 Image board PCB LAYOUT.………………………………………………………………………..		59
13-2 Key board PCB LAYOUT……………………..…..…..….. ………..…….. …. ……………..……		59
13-3 Side AV board PCB LAYOUT………………..…..…..….. ………..…….. …. ……………..……		59
13-3 PDC board PCB LAYOUT……………….…..…..….. ………..….. ….….. …. ……………..……		59
14 Schematic diagram……………………………………………………...........................……………...…		61

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1 SPECIFICATION

1-1 General Specification

	Item	Specification
	Screen size	42 inch plasma display panel
	Aspect	16:9
Panel	Display pixels	852 x 480 (WVGA)
	Effective display size	932mm x 532mm
Spec
	Number of color	16.7 million colors
	Contrast Ratio	10000:1 (in dark room)
	Peak brightness	1500 cd/
	TV Tuning	1 Tuners, Air:69 channels Cable:135 channels
TV Mode	Sound system	M
	Color system	ATSC / NTSC
	AV1 ( S_Video/Video)	Video RCA x 1		NTSC	Audio: L/R x 1
		S-Video1 x 1		NTSC
	AV2 ( S_Video/Video)	Video RCA x 1		NTSC	Audio: L/R x 1
Video Mode		S-Video2 x 1		NTSC
	AV3 / AV4			480i
				1080i
	COMPONENT X 2	YCbCr/YPbPrx 2			Audio: L/R x 2
				480P
	(YCbCr/YPbPr)
				720P
	Signal input	Analog D-Sub 15 pin
	Plug and play	DDC / 2B
	Support Frequency	FH:31KHz to 80KHz FV:50Hz to 85Hz
PC Mode		VESA: 640 x 480
	D-Sub Mode	VESA: 800 x 600
		VESA: 1024 x 768
		VESA: 1280 x 1024
	D-Sub Audio	Earphone (3.5ø)
	Signal input	Digital DVI-D 24 pin
	Plug and play	DDC / 2B
DVI Mode		720P
	DVI Mode	1080i
		480P
	DVI Audio	Earphone (3.5ø)
Power	Power input sources	AC 100-240V , 50/60Hz
	Power consumption	≤350W
	Operation Temperature	+ 0 °C ~ + 40 °C
Environment
	Storage Temperature	- 10 °C ~ + 50 °C
	Humidity	10% -- 85%
Dimension	Width x Height x Thickness	1038 x 726.5 x 240 (mm)
Net weight	With Stand	34Kg
Accessory	Remote Control Transmitter, Battery X 2, Power Cord, User’s Manual, RCA Cable,
	D-SUB Cable, DVI Cable.

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1-2 Feature Summary

The following is the specification summary for the display:

z107 cm (42”) 16:9 Large Screen Flat Panel Plasma Display

zResolutions: WVGA 852 (H) X 480(V) pixels, (1 pixel = 1 R, G, B cells)

z1.095 mm (H) X 1.110mm(V) pixel pitch.

zViewing Angle: 160° Vertically and Horizontally

z Internal TV Tuner, Air: 69 channels Cable: 135 channels

zTypical Maximum Contrast Ratio: 10000:1

zTypical Maximum Brightness: 1500 cd/m2

zATSC receiver, MPEG-2 decoder

zNTSC receiver, Video decoder

zDual Video, Dual S-Video

zDual Y Pb Pr (480i,480p,720p,1080i) HDTV Ready

zPC D-SUB 15Pin INPUT

zD-SUB analog video with rate 50Hz to 85 Hz vertical refresh rate and 31KHz to 80KHz horizontal frequency

zDVI-D Signal (TMDS) INPUT, Support HDTV, SDTV

zClosed Caption / V-chip

zComposite, S-Video, and component video receiver

zMIPS controller

zAuto Scan TV Channels

zField upgradable firmware

zUniversal Power Supply designed for worldwide application

zOperating power consumption less than 350 W

zStandby power consumption less than 1 W

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1-3 External interface

Most of these interfaces are located at the back-panel. There’s also a group of connectors located on the side of this device for easier access. The following figures depict these A/V connectors.

Side A/V Connectors

	S-Video Video L		R	Earphone

AV2 Input

Back Panel A/V Connectors

Page 6 of 83

1-3-1 Video/Audio Inputs

The following sections specify the video/audio inputs for A42W64AT4.

1-3-1-1 TV Antenna Interface . TV Antenna Connector

A42W64AT4 shall provide a F-type cable connector with 75 ohms termination on its back panel for reception of radio frequency signals.

. TV Systems

A42W64AT4 shall be capable of receiving the following broadcasting systems in the North America region.

•Analog terrestrial and cable broadcasting in NTSC system and “M” sound system.

•All 18 formats specified for ATSC digital broadcasting

•Clear QAM digital cable broadcasting

.TV Channel Coverage

The RF tuner shall be capable of covering 55.25 to 859.25 MHz and tuning to the following channels:

•VHF: channel 2 through 13

•UHF: channel 14 through 69

•Mid band cable: A1 through A8, A through I

•Super band cable: J through W

•Hyper band cable: AA through ZZ, AAA, BBB

•Ultra band cable: channel 65 through 94, 100 through 125

.Closed Caption

A42W64AT4 shall support closed caption and text mode for both video and TV system. These supports shall include channel ½ and field ½ selectable features.

. V-Chip

A42W64AT4 shall support MPAA grade for movie and TV Parental Guideline for TV. This support shall include changeable password.

1-3-1-2 AV1

A standard definition (SD) analog video/audio source designated as AV1 shall be located on its back panel. It comprises the following electrical connections. Only one of the two video inputs shall be connected.

. S-Video Input

A42W64AT4 shall provide a 4-pin mini-DIN connector for connection to an external S-Video source.

. CVBS Video Input

A42W64AT4 shall provide a RCA type receptacle for connection to an external CVBS source.

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. Audio Inputs

A42W64AT4 shall provide two RCA type receptacles for the stereo audio signal associated with AV1 input.

1-3-1-3 AV2

A standard definition analog video/audio source designated as AV2 shall be located at the side of A42W64AT4. It comprises the following electrical connections. Only one of the two video inputs shall be connected.

. S-Video Input

A42W64AT4 shall provide a 4-pin mini-DIN connector for connection to an external S-Video source.

. CVBS Video Input

A42W64AT4 shall provide a RCA type receptacle for connection to an external CVBS source.

. Audio Inputs

A42W64AT4 shall provide two RCA type receptacles for the stereo audio signal associated with AV2 input.

1-3-1-4 AV3

A YPbPr/YcbCr type component video interface designated as AV3 shall be located on its back panel. It comprises the following electrical connections.

. Video Inputs

A42W64AT4 shall provide three RCA type receptacles for connection to an external component video source.

. Audio Inputs

A42W64AT4 shall provide two RCA type receptacles for the stereo audio signal associated with Component1 input.

1-3-1-5 AV4

A YPbPr/YcbCr type component video interface designated as AV4 shall be located on its back panel. It comprises the following electrical connections.

. Video Inputs

A42W64AT4 shall provide three RCA type receptacles for connection to an external component video source.

. Audio Inputs

A42W64AT4 shall provide two RCA type receptacles for the stereo audio signal associated with Component2 input.

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1-3-1-6 PC Input

A42W64AT4 accommodates a VGA type computer connection as specified below.

. Video Input connector

A42W64AT4 shall provide a 15-pin D-Sub connector on its back panel for connection to a VGA type video source. The VGA signal input on the display shall be capable of receiving RGB analog video, H and V syncs, and DDC. The table below specifies pin-outs of this connector.

Analog Connector Pin-outs

PIN	MNEMONIC	SIGNAL
1	RV	Red Video
2	GV	Green Video
3	BV	Blue Video
4	NC	None
5	GND	Ground (DDC Return)
6	RG	Red GND
7	GG	Green GND
8	BG	Blue GND
9	+5 V	+5 V (from the PC)
10	SG	Sync Ground
11	NC	None
12	SDA	DDC Data
13	HS	Horizontal Sync
14	VS	Vertical Sync
15	SCL	DDC Clock

. Audio Inputs

1 5

6

10

11

15

A42W64AT4 shall provide a 3.5 mm jack for the stereo audio signal associated with VGA input.

. Input Formats

A42W64AT4 shall support the following input format on its VGA input.

				Horizontal		Vertical		Nominal
	Mode	Resolution	Total	Nominal	Sync	Nominal	Sync	Pixel
				Frequency	Pola-rity	Freq.	Pola-rity	Clock
				(KHz)		(Hz)		(MHz)
	VGA	640x480@60Hz	800 x 525	31.469	N	59.940	N	25.175
	SVGA	800x600@60Hz	1056 x 628	37.879	P	60.317	P	40.000
	XGA	1024x768@60Hz	1344x806	48.363	N	60.004	N	65.000
	WXGA	1280x1028@60Hz	1688x1066	64	N	60	P	108

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1-3-1-7 DVI

A42W64AT4 shall accommodate a DVI type digital video source as specified in this section.

. Video Inputs

A42W64AT4 shall provide a 24 contact DVI-D receptacle on its back panel for receiving TMDS digital video. The table below specifies pin assignments for the DVI-D connector.

DVI-D Digital connector pin assignments

PIN	MNEMONIC	SIGNAL
1	TX 2 -	TMDS Data 2 -
2	TX 2 +	TMDS Data 2 +
3	SHLD 2 / 4	TMDS Data 2 / 4 Shield
4	TX 4 -	TMDS Data 4 -
5	TX 4 +	TMDS Data 4 +
6	DDC Clk	DDC Clock
7	DDC Data	DDC Data
8	N/C	No Connect
9	TX 1 -	TMDS Data 1 -
10	TX 1 +	TMDS Data 1 +
11	SHLD 1 / 3	TMDS Data 1 / 3 Shield
12	TX 3 -	TMDS Data 3 -
13	TX 3 +	TMDS Data 3 +
14	+5V	+5V Power (from the PC)
15	GND	Ground (Return for +5V)
16	HPD	Hot Plug Detect
17	TX 0 -	TMDS Data 0 -
18	TX 0 +	TMDS Data 0 +
19	SHLD 0 / 5	TMDS Data 0 / 5 Shield
20	TX 5 -	TMDS Data 5 -
21	TX 5 +	TMDS Data 5 +
22	TX CLK SHLD	TMDS Clock Shield
23	TX CLK +	TMDS Clock +
24	TX CLK -	TMDS Clock -

. Audio Inputs

A42W64AT4 shall provide a 3.5 mm jack for the stereo audio signal associated with DVI input.

. HDCP support

HDCP must be supported on the DVI input. Refer to the High-bandwidth Digital Content Protection System specification version 1.1 for details.

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. Input Formats

A42W64AT4 shall support the following input format on its DVI input.

				Nominal	Nominal	Nominal Pixel
					Vertical
	Mode	Resolution	Total	HFrequency		Clock Frequency
					Frequency
				(KHz)		(MHz)
					(KHz)
	VGA	640x480@60Hz	800 x 525	31.469	59.940	25.175
	SVGA	800x600@60Hz	1056 x 628	37.879	60.317	40.000
	XGA	1024x768@60Hz	1344x806	48.363	60.004	65.000
	720P	1280×720P		45.00	60	74.25
	1080i	1920×1080i		33.75	60	74.25
	480p	720×480p		31.54	60	27.00

1-3-2 Power Interface

1-3-2-1 Power Connector

A42W64AT4 shall support an IEC C-13/C-14 (Standard) type male power receptacle for connection to AC power source.

1-3-2-2 Power Input Range

The operating range shall be from 100 to 240 VAC sinusoidal. Input power frequency range shall be from 50 to 60 Hz over the specified input voltage range.

1-3-2-3 Power Consumption

. Operating Power

Power consumption for the display over the specified voltage and frequency ranges shall be less than 350 W for the assemblies with speakers.

. Standby Power

A42W64AT4 power also below than one watt in the standby mode.

1-3-3 Service Interface

A42W64AT4 shall provide a 9-pin D-sub connector on its back panel for firmware upgrading purpose. This interface shall conform to RS-232 standard with the following pin-outs.

Pin	Function
1	NC
2	TXD transmitted data
3	RXD received data
4	Shorted with pin 6
5	FG frame ground
6	Shorted with pin 4
7	Shorted with pin 8
8	Shorted with pin 7
9	NC

The method of firmware upgrading please see “Flash update process” chapter.

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1-4 User interface

1-4-1 Power Indicator

A42W64AT4 shall make use of an LED type indicator located on the front of the display. The LED color shall indicate the power states as given in the following table.

LED colors

Mode	H-Sync	V-Sync	Video	Pw-cons.	Indicator
Power-On	On	On	Active	350W	Blue LED
Standby	Off	Off	Off	1W	Red LED

1-4-2 Remote Control Receiver

A42W64AT4 shall provide an infra-red (IR) optical detector on its front panel for use as the receiver for remote controller signal. The IR communication protocol shall conform to RC-5 standard. The minimum IR reception angles shall be +/- 30 degrees horizontally and vertically. The required operating distance of the remote control shall be 7 m.

1-4-3 On-Screen Display

A42W64AT4 shall provide an On Screen Display (OSD) system for customer setup. The following table gives the structure of the OSD menus.

	Main menu	Sub menu	Function	Default		Reset
		Tuning Band	To select between Air and Cable System	Air		—
		DTV Signal	To display the signal strength in order to aid the		—	—
			antenna adjustment
	SETUP	Auto Ch Search	To automatic scan and store all TV channels	—		—
		Manual Ch Set	To enable or disable channels		—	—
		Channel Label	To rename a channel		—	—
		Manu	To select the language for OSD among English,	English		—
		Language	Spanish, French, and Portuguese
		CONTRAST	To adjust the contrast value between 0~100	50		Yes
		BRIGHTNESS	To adjust the brightness value between 0~100	50		Yes
		SHARPNESS	To adjust the sharpness value between 0~100	50		Yes
		COLOR	To adjust the color value between 0~100	50		Yes
	VIDEO	TINT	To adjust the tint value between 0~100	50		Yes
		Aspect Ratio	To select aspect ratio among Normal, Zoom,	Normal		Yes
			Wide, and Cinema
		Settings	To restore all video settings to factory default		—	—
		Audio	To select audio language among English,	English		Yes
		Language	Spanish, French, and Portuguese
	AUDIO	BASS	Sets the bass value between 0~100		31	Yes
		TREBLE	Sets the treble value between 0~100		31	Yes
		BALANCE	Sets the left/right balance value between 0~100		31	Yes
		Restore Default	To restore all audio settings to factory default		—	—
		Time Set	To set current time		—	—
		Sleep Timer	To set the timer period to turn off the TV.	OFF		—
			Selectable values are OFF,30,60 and 90 minutes
	FEATURE
		Password Set	To set or change Parental Control password	TBD		—
		Parental	To select V CHIP settings	Un-lock		—
		Control			ed
		White Screen	To make a White screen by TV ifself.		—	—

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1-5 External Mounting Requirements

A42W64AT4 shall be designed so that the display enclosure can be easily removed from the base for external mounting applications. When the base is removed, there shall be no additional non-removable parts that are visible from the front of the display

1-6 Environmental Requirements

1-6-1 Temperature Ranges

Operating Temperature (Independent of altitude) ..................................................	0°C to 40°C
Non-Operating Temperature (Independent of altitude) ................. .....................	-10°C to 70°C
1-6-2 Humidity
Operating (non-condensing) .................... ...............................................................	20% to 85%
Non-Operating (38.7°C maximum wet bulb temperature........ ........... ....................	5% to 85%
1-6-3 Altitude
Operating ............................................................... ...................... ......................	(0 to 2,000 m)
Non-Operating............................... .................................... ........ . ......................	(0 to 3,000 m)
1-6-4 Vibration and Shock

All testing shall be done in each of three mutually perpendicular axes, referenced to the position of the system as it is in front of the user (i.e., front-to-back, side-to-side, and top-to-bottom).

2 Precautions and Notices

2-1 Precaution of assembly

1 Please do not press or scratch PDP panel surface with anything hard.

2 Please wipe out PDP panel surface with absorbent cotton or soft cloth in case of it being soiled3 Please wipe out drops of adhesive like saliva and water in PDP panel surface immediately. They might

damage to cause panel surface variation and color change4 Do not apply any strong mechanical shock to the PDP panel

2-2 Precaution of Operation

1 Please be sure to unplug the power cord before remove the back-cover. (make sure the power is turn-off)2 Please do not change variable resistance settings in PDP MODULE; They are adjusted to the most

suitable value. If they are changed, it might happen LUMINANCE does not satisfy.

3 Please consider that PDP MODULE takes longer time to become stable of radiation characteristic in low temperature than in room temperature.

4 Please pay attention to displaying the same pattern for very long-time. Image might stick on PDP.

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3 Operation

3-1 Operation of Remote Control Transmitter

A42W64AT4 shall provide an IR remote controller as accessory.

“Wide Mode”

Normal, Zoom ,Wide, Cinema

display select

“EPG” Display the state, source

“TV” TV source select, into TV state

“SLEEP” Select timer into power down state. off→30→60→90→off

“CC” To select close caption options(CC1,CC2……)

“ENTER” To enter sub Menu or sub item .

“MENU” To enter Menu mode .

“MUTE” Mute the sound

“Vol up / Vol down” Press Vol up/ Vol down key to adjust volume .

“0~9 number” To enter TV channel number

“ z ” To enter sub channel number for digital channels .

Wide Mode		EPG	POWER
	TV	Video	Digital
		SLEEP
	C		M
			T
C				S
		Up
left		Enter	right
		Down
M				IT
e			X
	n
	u		E
		Mute
	Vol up		CH up
Vol down			CH down

1	2	3
4	5	6
7	8	9
		Pre-CH

“POWER”

The TV Set turn on /turn off key

“Video”

AV1 CVBS Rear /AV1 S-Video Rear/ AV2 CVBS Side/ AV2 S-Video Side / AV3 component 1/ AV4 component 2

“Digital”

VGA/DVI source input

“MTS ”

To select audio program options

“Up▲/Down▼”

Move the cursor up and down on the Menu

“left ◄ / right ►”

Use left ◄/ right ► to select or adjust an item.

“EXIT”

To exit Menu or other OSD .

“CH up / CH down”

Press to select the next lower or higher Program number.

“Pre-CH”

TV channel return, see last TV channel .

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3-2 Front panel controls

- CH +

- VOL +

MENU

MODE

●

-CH+

-VOL+

MENU

MODE

IR: Remote Control Sensor.

LED: Power Indicator.

Power switch: Press to power on or power off the TV set..

Down: Press to select the next lower Programme number or move Down in Menu operation.

Up: Press to select the next higher Programme number or move up in Menu operation.

Left: Press to decrease the sound volume level or move Left in Menu operation. Right: Press to increase the sound volume level or move Right in Menu operation.

Menu: Press to enter Menu or exit Menu.

Mode: Press to select input signal modes or use as Enter in Menu operation.

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3-3 OSD MENU Description

3-3-1 Main MENU

1. Press “MENU” key on remote control or

front panel controls to bring up Main Menu.

2. Press “ ” or “ ” to move the cursor up

and down the sub menu list.

3. Press “ ” or “” to select sub menu item.

4. Press "Enter" to enter sub-item then use

“ ” or “ ” to adjust.

3-3-2 SETUP MENU

1. Tuning Band: Select TV signal source between Air and Cable. Select Cable if you are connecting to a cable box and select Air if you are directly connecting to the antenna.

2. DTV Signal: Display signal strength to aid antenna adjustment.

3. Auto Ch Search: Automatically scan and store all TV channels.

4. Manual Ch Set: Enter channel setup table.

5. Channel Labels: Display and edit channel names.

6. Menu Language: Select language for menu (English Español Fançais Portuguese).

y DTV signal menu indicates signal strength in real-time.

y Auto channel scan menu displays channel number being scanned.

y Manual Channel Set Menu

Displays all the channel numbers that are found.

Tune either to ATSC or NTSC channels. Add or delete Channel number.

y Channel Labels Menu allows user labeling.

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3-3-3 Video MENU

1.Press “ ” or “ ” to move the cursor up or down the sub-item list.

2.Press "Enter" to enter the highlighted

sub-item menu.

3. Press “ ” or “ ” to adjust the value of the sub-item.

4. Press "Enter" again to exit the sub-item.

Contrast: Contrast adjustment, 0~100.

Brightness: Brightness adjustment, 0~100.

Color: Color chroma adjustment, 0~100.

Tint: Tint adjustment, 0~100.

Aspect Ratio: Aspect Ratio selection.

Normal Zoom Wide Cinema.

Settings: Restore default setting.

3-3-4 Audio MENU

1. Press “ ” or “ ” to move the cursor up or down the sub-item list.

2. Press "Enter" to enter the highlighted sub-item menu.

3. Press “ ” or “ ” to adjust the value of the sub-item.

4. Press "Enter" again to exit the sub-item.

Audio Language:

English Español Français Portuguese.

Bass: Bass adjustment, 0 ~ 100.

Treble: Treble adjustment, 0 ~ 100.

Balance: Balance adjustment, 0 ~ 100.

Restore Default: Restore Audio Language,

Treble, Base, and Balance setting to default.

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3-3-5 Feature MENU

1.Press “ ” or “ ” to move the cursor up or down the sub-item list.

2.Press "Enter" to enter the highlighted sub-item menu.

3.Press “ ” or “ ” to adjust the value of the sub-item.

4.Press "Enter" again to exit the sub-item.

Time Set: Select minutes into standby

Off 30 60 90.

Password Set: Enter and change Parental

Control Password.

Parental Control: Setup TV and Movie

rating controls.

White Screen: Select White Screen, and press MODE front panel button (Enter on the Remote control).The TV immediately displays the white screen.

Parental Control Menu: Controls viewing of rated TV and Movie programs.

Default password is: 0000.

Important : If you have forgotten your Password. Use the code [0711] to enter into the Password Set menu item to change your password. You can also use the code [0711] to change your Parental Controls settings.

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3-3-6 Closed Captions

1. Press “CC” key on remote control to select closed captions mode. NTSC TV: Off CC1 CC2 …

ATSC TV: Off CS1 CS2 … 2. Select desired closed caption mode.

3.Closed captioning for analog NTSC channels is transmitted as CC1/CC2/CC3/ CC4. Closed captioning for digital channels is transmitted as CS1/CS2/CS3/CS4/ CS5/CS6 or occasionally CC1/CC2/CC3/CC4. You need to select the option you want for analog channels and digital channels separately.

	CC1				CS1
NTSC TV				ATSC TV

3-3-7 EPG

Press the “EPG” key on the remote control to display the Electronic Program Guide (EPG). A message window will be displayed on screen.

EPG Message Window

3-3-8 TV channel arrangement
Each digital channel may comprise of
several sub-channels.
To select a digital channel using the remote		Ch 5.4
control:
1.	Enter main channel number.
2.	Press the “•” key.
3.	Enter the sub-channel number.

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4 Trouble shooting chart

If replace “IMAGE BOARD”, Please re-do “DDC writing” program & “WHITE-BALANCE” & Flash Update.

If replace PANEL module, Please re-do “white-balance adjust”

4-1 PANEL Trouble shooting

Please reference the “PANEL Service Manual”.

4-2 Turn PDP on and Check:

Plug power cord into pdp set, and the color of LED is red;

Power Cable

LED Light

If PDP under the normal working, display of LED is blue. Then, the screen show is nor dark. If the color of LED is red under standby state, you should press the “power” bottom of remote control or you should press the front standby key. Then, turn PDP TV on.

If it is nothing about OSD or display on screen, service PDP.

The procedure and maintain the step meet as follows:

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4-2-2 Solution process of whole PDP:

Screen is nothing under power on

Check AC input of PDC

Check PowerSTB5V U516 3PIN

Voltage: 5V

Check the REL-SW state of power IO
interface
High Voltage Turn on
Low Voltage Standby
		Q5
Test Point C pole of Q5
High Voltage 5V 4.2---5.3V
Low Voltage 0V

U516

Q5

Image board

R128

CN704 CN703

If REL-SW is ok check other power.

Check device circuit and logic circuit,

Vs, Vset, Vsc, Ve etc.

Arrow shows test point.

If there was anything unmoral, test voltage and repair it.

Check the voltage of CN703 PIN5 --Æ 12 V

PIN8 --Æ 3.3 V

PIN9 --Æ 3.3 V

PIN11 --Æ 6 V (Samsung PANEL)

			Fig1: Voltage sheet
Process of repair as follow
		Name	Voltage	Reference
		VS	209V	Voltage for driving sustain
		VA	70V	Voltage for driving address
		VE	82V	Voltage for driving X-bias
		VSET	198V	Voltage for driving reset
		Vscan	-198V	Voltage for driving scan
		Vg	15V	Voltage for driving FET
		D3V3	3.5V	Voltage for driving logic

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4-2-3 STB POWER Solution process

POWER un-moral

No input of +5VSB,or output is unmoral Test point CN903 PIN2 Voltage 5V 4.9 5.1

NG

Do these process under the state is +5VSB

Test AC Input of CN901 ok or not?

Voltage AC 100 V ~ 120 V /200 V ~ 240 V

	OK
		NG
	Test voltage of C905		Check FUSE F901,
	is DC300V or not		BD901ok or not

OK

Check IC901 and D901 ok or not

OK

+5VSB OK

No input of AC Power out, or output is unmoral Test point CN902 Voltage: AC INPUT±1V

NG

PS ON ok or not NG Test point CN903 PIN4 Voltage DC5V High

OK

Vccp ok

Test pads of C909

Voltage DC13V 25V

OK

Q901, Q902, Q903, Q904,

M902 ok or not

OK

AC POWER-OUT OK

Check circuit of IMAGE BOARD, and check PS-ON OK or not?

Note Must distinguish connect Grand point of Power primary and secondary level.

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4-2-4 Solution processes for DC Power

Check the junction that CN703 to CN704 or CN701 to CN702 ok or not?

		OK
Test input voltage:
L701	--Æ 12 V
L703	--Æ	6 V	NG	Is there any short or
L721	--Æ	3.3 V (Samsung PANEL)		cold solder?

Test voltage as follow

L705--Æ8V

L706--Æ5V

L704--Æ5V

L718--Æ2.5V

L719--Æ1.2V

OK

4-2-5 Solution processes for SCALER

Check power supply , input and output signal of U1

ZR391055 and U2 NGDS90C2501 ok or not?.

OK
	NG
Check input and output signal of
U8 and TX0-/TX0+ signal etc. ok
or not?

OK

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Is there any short or cold solder?

Replace U8

4-2-6 Solution processes VIDEO

No display under Video, S-video, YCbCr and YPbPr mode

Check the state of power switch ,and DC power.

OK

1.Test input signal of U14

under VIDEO and

NG

S-VIDEO mode

2. Test input signal of U1 at C18/C19/C20 under YCbCr mode

OK

NG

Check U1

OK

Is there any short or disconnection, and signal is wrong.

The signal of standard color bar will be very clear

Is there any short or disconnection, CLK and SYNC signal to U1circuit?

		NG	Is there any short or disconnection, CLK
	Check circuit of U6
			and SYNC signal to U6 circuit?
	(PW1231) ok or not?

OK

Check circuit of U20

SCALAR and LVDS

X5

OK

U6

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