Ctx PV722E, PV722I SERVICE MANUAL

SERVICE MANUAL

PV722i/PV722E

The Monitor Specialists

EDITION 1 JAN. 2003

C

T

X

C

T

X

C

T

X

Service Manual

TABLE OF CONTENTS

CONTENTS PAGE

Sections

1. Scope (For PV722i) 3

2. Input requirements (For PV722i) 3~ 5

3. Electrical Characteristics (For PV722i) 5~11

4. Scope (For PV722E) 12

5. Input requirements (For PV722E) 13

6. Electrical Characteristics (For PV722E) 15~22

7. Trouble Shooting 23~24

PV722i/PV722E

8. System Block Diagram 25

9. Inverter Board I/O Connection 26

10. IC Pin Configuration 27~30

11. Pin Assignment 31~36

12. Parts List 37

Appendix

1. Main Board Circuit Diagram

2. Assembly Explosion Drawing

-1-

C

T

X

Service Manual

PV722i /PV722E

The CTX SERVICE MANUAL is published by Chuntex Electronic Co., Ltd

means for any purpose without the express written permission of the publisher.

The publisher has been trying its best to make this publication perfect, and in this manner takes no responsibility for

the use of any of the materials or methods described in this manual, or for the products thereof. Neither will the

publisher be responsible for any damages caused by misuse or misquotation.

C

T

X

Information in this manual is subject to change by the publisher without any notice in advance.

CTX is a registered trademark of Chuntex Electronic Co., Ltd.

-2-

C

y

p), ▽(

T

X

C

T

X

C

T

X

The Specification of PV722i

1. SCOPE

This specification defines the design and performance requirements for the 17” SXGA TFT LCD display monitor.“PV722i “ There are 3 models of “ PV722i” in each own’s project code. Project Code: The common features of the 3 models of “PV722i” are listed in the following table:

Feature Description

1 Universal input AC/DC Adaptor 2 Digital Visual interface (DVI-D) TMDS 1 Ch 165MHz 3 Analog RGB interface (VGA ) 30~80KHz, 59~75Hz, 135MHz 4 17” SXGA 1280*1024 multi-view-angle (MVA), TFT LCD panel 5

Function ke

6

Direct Acess function keys : △ for

7 Green/Amber LED indicator for power on/power saving 8 Plug & play support with DDC2B protocol installed. 9 Power saving mode compliant with Energy Star

10 OSD (on screen display) MENU operation

10.1 Brightness adjustment

10.2 Contrast adjustment

10.3 Auto tune function (VGA)

10.4 Color selection

10.5 Image adjustment

10.6 Position adjustment

10.7 Language selection

10.8 Reset function

10.9 Source selection (DVI/VGA) 11 OSD information of input status 12 Panel Rotation function for Portrait Graphic Application

The differential features of the 3 models of PV722i are listed in the following table

Feature

ISO 13406-2

Audio Modual (speaker*2,Stero earphone jack) No No Yes Direct “ESC” key for Audio mute No No Yes Volume Adjustment(OSD) No No Yes

2. INPUT REQUIREMENTS

2.1 Input Power

2.1.1. Power Source

2.1.2. Power Consumption

s * 6 : Power On/Off, ESC, △(u

contrast function, ▽ for brightness function

Model

Project

View Direction Class

Pixel Faults Class

110 Vac, 240 Vac, + -10%, 50/60 Hz (48W,2.5ψ plug)

1.PV722I model with Audio (LKC17SS2CC01) Normal operating mode : ≦ 43W Power saving mode

a. Audio module is operating at full power(max) : ≦ 9W

b. Audio module is operating at no signal input (max) : ≦ 5W

Power switch off : ≦ 3W (PC off)

-3-

PV722i

(ISO13406-2

Class Ⅱ)

LKC17SS2CC

down), (enter),signal source

PV722i

(ISO13406-2

Class Ⅱ , 0 pixel Fault)

LKC17SS0CC

Service Manual

PV722i/PV722E

PV722i

(ISO13406-2

Class Ⅱ + Audio)

LKC17SS2CC01

Service Manual

PV722i /PV722E

C

T

X

C

T

X

2.1.3. AC Line Drop Out

2.1.4. AC Wave Distortion

2.1.5. In-rush Current

2.1.6. Power Cord

2.1.7 DC Power cable

2.2 Display Input

2.2.1. Analog Input RGB Video

2.2.1.1 Sync Signal

Analog Input Connection a. Detachable Mini D-sub 15 pin male in two ends signal

b. A female Mini D-sub 15 pin base . Pin 1 Red

2.2.2 Digital Input

Input Interface DVI-D V.1 TMDS 165MHz 1-Channel

Digital Input connection a. Detachable DVI-D male connector in two ends signal cable: b. A female DVI-D connector in monitor side.

2. PV722I model without Audio ( LKC17SS0CC)

Normal operating mode : ≦ 40W

Power saving mode : ≦ 3W

Power switch off : ≦ 3W (PC off)

Picture must not disappear while AC 100 V input drop out(10ms, 100%)

10% max. permitted

50 A max at 230 Vac cold start

Detachable, 3P with ground type.

Detachable from display unit and captive with AC/DC adapter.

Analogue, 0.0 to 0.7 V peak to peak Separate RGB Input impedance 75 Ohm Positive polarity

Separate horizontal & vertical sync (3.3V & 5V) Low level 0.8 V maximum High level 2.0 V minimum Positive or negative polarity

cable.

Pin 2 Green Pin 3 Blue Pin 4 No Connection Pin 5 Ground Pin 6 R Return Pin 7 G Return Pin 8 B Return

DVI-D 1-Channel Pin Assignment

+

LKC17SS4CC /LKC17SS2CC/

Pin 9 D-SUB-5V Pin 10 Ground Pin 11 Ground Pin 12 SDA Pin 13 H. Sync & Composite sync Pin 14 V. Sync Pin 15 SCL

+

-

-4-

C

T

X

C

T

X

C

T

X

Service Manual

PV722i/PV722E

2.3 Audio Input (LKC17SS2CC01)

2.3.1 Audio Input Signal Right &Left channels.

Input level : 1Vrms(typ), 2Vrms(max) Input Impedance : 15Kohm

2.3.2 Audio Input Connection a. Detachable stereo phone head in two ends signal cable. b. A female stereo phone jack base.

3. ELECTRICAL CHARACTERISTICS

3.1 LCD Panel

3.1.1. Type 17” diagonal, SXGA resolution, color TFT-LCD

3.1.2. Pixel structure

3.1.3. Gray scale 16 million colors.

3.1.4. Surface treatment 3H hard coating ,anti-static,anti-glare

3.1.5. Backlight

3.1.6 Pixel Faults

R/G/B sub-pixels in vertical stripes 1280 x 1024 array matrix a- Si TFT active matrix (MVA)

Integral CCFT , Type to support field replacement. Life time 30000 hours @ 25C, 50% of initial value.

Model

Pixel Faults type

Type1 Bright Pixels (Note 2)

Type2 Dark Pixels (Note 3)

Type3 Fault Pixels / Sub-Pixels(Note 4)

Type4 Cluster of type1 or type 2 faults(Note 5)

Type5 Cluster of type3 faults (Note5)

Type6 Total Pixel Faults

-5-

PV722i

≦ 5 ≦ 3 ≦ 5 ≦ 3 ≦ 3 ≦ 5 ≦ 2 ≦ 0 ≦ 3 ≦ 3 ≦ 8 ≦ 5

PV722i

(ISO13406-2

Class Ⅱ)

PV722i

(ISO13406-2

Class Ⅱ

+ 0 pixel Fault)

0

0 0

0

PV722i

(ISO13406-2

Class Ⅱ+ Audio)

≦ 3 ≦ 3 ≦ 5

≦ 3 ≦ 5

μ

S ( Bac

C

T

Service Manual

PV722i /PV722E

Note 1 : The spec meets ISO/FDIS 13406-2 Pixel Faults Class Ⅱ requirements. Note 2 : Bright pixels in full black pattern.

Note 3 : Dark pixels in full white pattern Note 4 : fault Pixel / Sub-Pixel : The pixel or sub-pixel is abnormal but not bright/dark pixel. Note 5 : Fault Cluster : Two or more Pixels/Sub-pixels with faults within 5 * 5 block of pixels.

3.2 Modes and Timing Compability

3.2.1 Analog

Table 1. Supported Timing VESA Standard mode :

Display Format IBM VGA VESA VESA VESA VESA VESA Horizontal Dots 720 640 640 640 800 800 800 Vertical lines 400 480 480 480 600 600 600 Horizontal Frequency ( KHz) 31.469 37.861 37.5 37.879 48.077 46.875 Vertical Frequency ( Hz ) 70 59.94 72.809 75 60.317 72.188 75.000 Pixel Rate ( MHz ) 28.322 25.175 31.5 31.5 40 50 49.5 H. Sync. Polarity - - - - + + +

A μS ( Period ) B μS ( Pulse Width ) C D μS ( Active Area ) E μS (Front Porch )

V. Sync. Polarity + - - - + + + O ms ( Period ) 16.683 13.735 13.333 16.579 13.853 13.333 P ms ( Pulse Width ) 0.064 0.079 0.080 0.106 0.125 0.064 Q ms ( Back Porch ) 1.048 0.739 0.427 0.607 0.478 0.448 R ms ( Active Area ) 12.711 15.253 12.678 12.800 15.840 12.480 12.8 S ms ( Front Porch ) 0.318 0.237 0.027 0.026 0.770 0.021

k Porch )

31.778 26.413 26.667 26.4 20.8 21.333

25.422 20.317 20.317 20.0 16.0 16.162

3.813 1.270 2.032 3.2 2.4 1.616

1.907 4.063 3.810 2.2 1.28 3.232

0.636 0.763 0.508 1.00 1.12 0.323

X

C

T

X

C

T

X

Display Format VESA VESA VESA VESA VESA VESA

Horizontal Dots 1024 1024 1024 1152 1280 1280

Vertical lines 768 768 768 864 1024 1024

Horizontal Frequency ( KHz) 48.363 56.746 60.023 67.5 63.981 79.976

Vertical Frequency ( Hz ) 60.004 70.069 75.029 75 60.013 75.025

Pixel Rate ( MHz ) 65.0 75 78.75 108 108 135

H. Sync. Polarity - - + + + +

A μS ( Period )

B μS ( Pulse Width )

C μS ( Back Porch )

D μS ( Active Area )

E μS (Front Porch )

V. Sync. Polarity - - + + + +

O ms ( Period ) 16.666 14.272 13.238 13.333 16.663 13.329

P ms ( Pulse Width ) 0.124 0.106 0.050 0.044 0.047 0.038

Q ms ( Back Porch ) 0.6 0.513 0.466 0.474 0.594 0.475

R ms ( Active Area ) 15.88 13.599 12.795 12.8 16.006 12.804

20.667 17.707 16.660 14.815 15.631 12.504

2.092 1.813 1.219 1.185 1.180 1.067

2.462 1.920 2.235 2.370 2.065 1.837

15.754 13.653 13.003 10.667 11.797 9.481

0.369 0.321 0.203 0.593 0.590 0.119

-6-

C

T

X

C

T

X

C

T

X

Service Manual

PV722i/PV722E

VGA Support Mode

1280 * 1024 @ 70Hz 1280 * 1024 @ 72Hz 1280 * 960 @ 60Hz,70Hz,72Hz,75Hz 1208 * 720 @ 60Hz 1152 * 864 @ 60Hz, 70Hz,72Hz 1024 * 768 @ 72Hz 800 * 600 @ 70Hz 640 * 480 @ 70Hz 640 * 350 @ 70Hz

Fig. 1 Timing chart

VIDEO

H SYNC B C D E

Video

V Sync

P Q R S

o

3.2.2 Digital

DVI Support mode

640 * 480 @60Hz

800 * 600 @60Hz

1024*768 @60Hz

-7-

Service Manual

PV722i /PV722E

3.3 Plug & Play

DDC 2B data transmission only for I

3.4 Scanning characteristics

Refresh rate 59Hz to 75Hz 59Hz to 61Hz

3.5 Audio Module (Optional , for LKC17SS2CC01 model)

3.6 User Controls and Indicator

3.6.1 Power ON/OFF Switch

3.6.2 LED Indicator

3.6.3 OSD

3.6.3.1 Buttons

3.6.3.2 OSD Menu Level

3.6.4 Hot Keys Function

3.6.4.1 Contrast (

3.6.4.2 Brightness (

*3.6.4.3 Mute On (

*3.6.4.4 Mute Off (

*3.6.4.5 In monitor power saving mode

3.6.4.6 Signal source key Press “ESC” key is for Mute ON and OFF function directly.

Remark : “*” : for LKC17SSCC01 model.

Horizontal frequency 30KHz to 80KHz 30KHz to 66KHz

2.2.1 Input Level : 1Vrms(typ),2Vrms(max)

2.2.2 Output Power : 1W * 2 (10% THD,1KHz)

2.2.3 Total Harmonic Distortion (THD)…..0.3%(0.5W*2, 1KHz)

2.2.4 Frequency Response ± 3dB : 330 ~ 20KHz

VESA DDC 2B, DVI support DDC 2B+ standard

)

VGA DVI

The switch control scaler power down and turn off panel.

The LED color shall indicate power status as shown in paragraph

3.7

ESC ,▽ , △ , ,Signal source

See Table 2. PV722 OSD Control Map

Press “△ ” to pop up ;then press “△ ” or “▽ ” to adjust Contrast up or down.

Press “▽ ” to pop up ;then press “△ ” or “▽ ” to adjust Brightness up or down.

Press “Esc” directly to disable speakers, while speaker in normal state.

Press “Esc” directly to enable speakers, while speaker in audio mute state. “Esc” key is for Mute On and Off function

“△ ” key is for increasing volume function.

“▽ ” key is for decreasing volume function.

Press “Signal source” key to select VGA or DVI input.

C

T

2

C BUS interface card.

X

C

T

X

C

T

X

-8-

C

T

X

C

T

X

C

T

X

Table 2 PV722 OSD Control Map

1. VGA-D15 input

Level 1 Level 2 Level 3 Level 4 Detect Adj. Brightness

Detect Adj. Contrast

Detect Adj. *Audio Mute

Service Manual

PV722i/PV722E

Main Menu

*Volume Adjustment Scale

Auto Tune Adjustment Scale

Color

Image

Position

9300∘K

6500∘K User R/G/B select Adjustment Scale

Moive

Clock Adjustment Scale

Phase Adjustment Scale

Smooth On/Off

Image Position

OSD Position

Color Adjustment Scale

Tint Adjustment Scale

Flesh Tone Adjustment Scale

(Y) Brightness Adjustment Scale

(Y) Contrast Adjustment Scale

Reset

H-Position Adjustment Scale

V-Position Adjustment Scale

Center Adjustment Scale

H-Position Adjustment Scale

V-Position Adjustment Scale

Center Adjustment Scale

Language

Reset Yes/No

Source DVI/VGA (select)

English (select)

German (select)

French (select)

Spanish (select)

Italiano (select)

中文 (option)

-9-

Service Manual

PV722i /PV722E

Remark : “*” : for LKC17SS2CC01 model

2.DVI input

Level 1 Level 2 Level 3 Level 4 Detect Adj. Brightness

Detect Adj. Contrast

Detect Adj. *Audio Mute

Main Menu

*Volume Adjustment Scale

Color

Image Smooth On/Off

Position

Language

9300∘K 6500∘K

User R/G/B select Adjustment Scale

Moive

OSD Position

English (select)

German (select)

French (select)

Spanish (select)

Italiano (select)

Color Adjustment Scale

Tint Adjustment Scale

Flesh Tone Adjustment Scale

(Y) Brightness Adjustment Scale

(Y) Contrast Adjustment Scale

Reset

H-Position Adjustment Scale

V-Position Adjustment Scale

Center Adjustment Scale

C

T

X

C

T

X

C

T

X

Reset Yes/No

Source DVI/VGA (select)

Remark : “*” : for LKC17SS2CC01 model.

3.6.5 Accessory OSD Indications

Signal out of range An input signal which is outside the range defined in

No Signal Input and power down

中文 (option)

Section 3.4 shall cause the monitor to display a message Signal Out of Range.

When the signal cable is not plugged into PC or when the horizontal or vertical sync are absent and when the monitor is turned on. After 5 sec isn’t to detect H or V Sync then show “No Signal Input” 3 sec, and then show ” Power down” message on screen 2 sec. If first turn on the monitor, shows “No Signal Input” 30 sec.

-10-

C

T

X

C

T

X

C

T

X

3.7 Power Management

Note 1 : For LKC17SS2CC, LKC17SS0CC model. Note 2 : For LKC17SS2CC01 model:

Once “Esc” or “△ ” or “▽ ” key initiates under power saving condition, the audio function can

be woken up and the power consumption can not be the above definition.

This monitor will meet the low power specification, Including USA governmental requirements For Energy Star, the NUTEK standard and the VESA DPMS standard which detected the Hori. /Vert. Sync signal from scaling IC (gm-5020). A dual color (green/amber) LED is located on the front bezel to indicate the power management states.

Sync Power consumption

On 43W max. (LKC17SS2CC01)

40W max. (LKC17SS2CC00) (Note 1)

Off

≦ 5W (LKC17SS2CC01) (Note 2)

≦ 3W (LKC17SS2CC0) (Note 1)

Power

management

ON - Green

Off

Service Manual

Picture Recovery time LED Color

≦ 3 sec

PV722i/PV722E

Amber

-11-