Ctx P922E SERVICE MANUAL

SERVICE MANUAL

P922E

The Monitor Specialists

EDITION 1

FEB. 2003

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Service Manual

TABLE OF CONTENTS

CONTENTS PAGE

Sections

1. Scope 4

2. Input requirements 5~ 6

3. Electrical Characteristics 6~13

4.Trouble Shooting 14~15

5.System Block Diagram 16~17

6. Inverter Board I/O Connection 17

P922E

7. IC Pin Configuration 18~21

8. Pin Assignment 22~32

9. Parts List 33

Appendix

1. Main Board Circuit Diagram

2. Assembly Explosion Drawing

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Service Manual

P922E

Copyright © 2002 by Chuntex Electronic Co., Ltd.

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

All rights reserved. No part of this manual may be used, copied, reproduced, or transmitted in any form or by any

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.

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.

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Service Manual

P922E

1. SCOPE

This specification defines the design and performance requirements for the 19” SXGA TFT

LCD display monitor “P922E “ series.

There are two models of “P922E” in each own’s project code.

The common features of the “P922E” is listed in the following table :

Feature Description

Universal input AC/DC Adaptor

1
2 Digital Visual interface (DVI-D) TMDS 1 Ch 165MHz

Analog RGB interface (VGA ) 30~92KHz, 59~85Hz, 157.5MHz

3

USB 2.0 module (provided 4 downstraem ports)

4
5 Built in 1W*2 (L/R) speakers (Stereo)

19” SXGA 1280*1024 Patterned Vertical Alignment (PVA), TFT LCD panel

6
7

Direct Acess function keys : △ for

8

for mute function

9 Green/Amber LED indicator for power on/power saving

10 Plug & play support with DDC2B protocol installed.

11 Power saving mode compliant with Energy Star

12 OSD (on screen display) MENU operation

12.1 Brightness adjustment

12.2 Contrast adjustment

12.3 Auto tune function (VGA)

12.4 Color selection

12.5 Image adjustment

12.6 Position adjustment (VGA)

12.7 Language selection

12.8 Reset function

12.9
13 OSD information of input status
14
15
16
17 Cable wire arrange box

Source selection (DVI/VGA)

Left side Dial volume control

Tilt (in front bezel) and Swivel (in base) adjustable.

*

-

△

contrast function, ▽ for brightness function, “Esc”

▽

The differential features of the 2 models of P922E are listed in the following table

Feature

ISO13406-2

Model

project

View Direction Class

Pixel Faults Class

P922E

(ISO13406-2 Class Ⅱ)

LKC19SS2BC03 LKC19SS0BC03

Ⅱ Ⅱ

Ⅱ Ⅰ

ISO13406-2 Class Ⅱ

P922E

+ 0 Pixel Fault

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2. INPUT REQUIREMENTS

2.1 Input Power

2.1.1. Power Source

2.1.2. Power Consumption

Normal operating
mode

Power saving
mode

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. RGB Video

2.2.2 Sync Signal

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

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100 ~ 240 Vac, + -10%, 50/60 Hz (60W,3.0ψ plug to
monitor.)

1.Audio function and USB 2.0 module are operating at full
power

2.USB 2.0 module all ports aren’t connected to any device,
and the audio module is operating at full power.

3. USB 2.0 module all ports aren’t connected to any
device,and
the audio function is operating at no audio signal input.

1. USB 2.0 module is operating at full power, the
number of active Ports is 4 with 0.5A per port. Audio
function is operating at full power.

2. USB 2.0 module all ports aren’t connected to any
device, audio function is operating at full power.

3. USB 2.0 module all ports aren’t connected to any
device, audio function is operating at no audio signal
input.

1. USB 2.0 module upstream port isn’t connected to PC or PC off.

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

10% max. permitted

50 A max at 240 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.

≦

57W

≦

42W

≦

≦

22W

≦ 9W

≦ 5W

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

Pin 2 Green
Pin 3 Blue
Pin 4 Ground
Pin 5 Ground
Pin 6 R Return
Pin 7 G Return
Pin 8 B Return

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Pin 9 No Connection
Pin 10 Ground
Pin 11 No Connection
Pin 12 SDA
Pin 13 H. Sync &
Composite
sync
Pin 14 V. Sync
Pin 15 SCL

P922E

2.2.4 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.

Pin Signal Assignment Pin Signal Assignment Pin Signal Assignment

1 T.M.D.S Data 2- 9 T.M.D.S Data 1- 17 T.M.D.S Data 0­2 T.M.D.S Data 2+ 10 T.M.D.S Data 1+ 18 T.M.D.S Data 0+
3 T.M.D.S Data 2 Shield 11 T.M.D.S Data 1 Shield 19 T.M.D.S Data 0 Shield
4 NC 12 NC 20 NC
5 NC 13 NC 21 NC
6 DDC Clock 14 +5V Power 22 T.M.D.S. Clock Shield
7 DDC Data 15 Ground 23 T.M.D.S. Clock+
8 NC 16 Hot Plug Detect 24 T.M.D.S. Clock-

DVI-D 1-Channel Pin Assignment

2.3 Audio Input

2.3.1 Audio Input Signal Right & Left channels.
Input level : 1Vrms(typ)
Input Impedance : 15 Kohm

2.3.2. Audio Input Connection a. Detachable stereo phone head in two ends signal

cable.

b. A femal stereo phone jack base.

2.4 USB Input USB Rev.2.0

2.4.1 USB Input signal Differential signal D+,D-

2.4.2 USB Input connection a. Detachable standard USB cable (2.0)

b. A female standard USB up-stream port base.

2.4.3 USB Output Connection Four female USB down-stream port bases.

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3. ELECTRICAL CHARACTERISTICS

3.1 LCD Panel

3.1.1. Type 19” diagonal, SXGA resolution, color TFT-LCD

3.1.2. Pixel structure

3.1.3. Gray scale 16.7 million colors.

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P922E

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

3.1.4. Surface treatment

3.1.5. Backlight

3.1.6 Pixel Faults

3H hard coating ,anti-static,anti-glare

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
Type5 Cluster of type3 faults (Note5)

Type6 Total Pixel Faults
Note 1 : 0 pixel fault meets ISO/FDIS 13406-2 Pixel Faults Class I 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.

Cluster of type1 or type 2

P922E

(ISO13406-2

Class Ⅱ)

+ 0 pixel Fault) (Note 1)

P922E

(ISO13406-2

Class Ⅱ

0
0
0
0
0
0

3.2 Modes and Timing Compability

The monitor shall support an internal scaler to enable the monitor to display
lower resolution video modes. The scaler shall convert all lower resolution
modes up to 1280x1024. The monitor shall support all the modes listed in
Table 1.

3.2.1 Analog

Table 1. Supported Timing

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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 μ S ( Period )

B μ S ( Pulse Width )

C μ S ( Back Porch )

D μ S ( Active Area )

E μ S (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

31.778 26.413 26.667 26.4 20.8 21.333

3.813 1.270 2.032 3.2 2.4 1.616

1.907 4.063 3.810 2.2 1.28 3.232

25.422 20.317 20.317 20.0 16.0 16.162

0.636 0.763 0.508 1.00 1.12 0.323

Display Format VESA VESA VES
Horizontal Dots 1024 1024 1024 1152 1280 1280
Vertical lines 768 768 768 864 1024 1024
Horizontal Frequency 48.363 56.746 60.023 67.5 63.981 79.976
Ver tical Frequency 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 - - + + + +

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
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

S ms ( Front Porch ) 0.062 0.054 0.017 0.015 0.016 0.012

VESA VESA VESA

VGA Support Mode

8

1280 * 1024 @ 70Hz,72Hz,85Hz
1280 * 960 @ 60Hz,70Hz,72Hz,75Hz,85Hz
1280 * 720 @ 60Hz
1152 * 864 @ 60Hz, 70Hz,72Hz,85Hz
1024 * 768 @ 72Hz,85Hz
800 * 600 @ 70Hz,85Hz
640 * 480 @ 70Hz,85Hz
640 * 350 @ 70Hz

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Fig.1 Timing Chart

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3.2.2 Digital

DVI Support mode

640 * 480 @60Hz
800 * 600 @60Hz
1024*768 @60Hz
1280*1024@60Hz

3.3 Plug & Play

VESA DDC 2B, DVI support DDC 2B+ standard DDC 2B data transmission only for

2

I

C BUS interface card.

3.4 Scanning characteristics VGA DVI

Horizontal frequency 30KHz to 92KHz 30KHz to 66KHz

Refresh rate 59Hz to 85Hz 59Hz to 61Hz

3.5 USB 2.0 Module

3.5.1 The USB 2.0 module provided for 4 down-stream ports and 1 up-stream port.

3.5.2 The USB 2.0 module can detect the status of computer (USB V

power) to save power.

BUS

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3.5.3 Down-stream port output power : 5V±5% (> 4.75V, < 5.25V)

3.5.4 Overcurrent detection : 0.6 to 1.25A ( 0.9A typ.) (The USB

3.5.5 Bus transation : High speed(480Mbps), full speed(12Mbps)

standard defines the max.current is 0.5A for each port)

low speed(1.5Mbps)

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P922E

3.6 Audio Function

3.6.1 Input Level : 1Vrms, 2.828Vpp(typ.)

3.6.2 Max. Output Level : 7.8Vpp, No distortion(Input level :3.76Vpp

max. volume)

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

3.6.4 Total Harmonic Distortion (THD) 0.3%(0.5W*2, 1KHz)

3.6.5 Frequency Response ± 3dB : 330 ~ 20KHz

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3.7 User Controls and Indicator

3.7.1 Power ON/OFF Switch

3.7.2 LED Indicator

3.7.3 OSD

3.7.3.1 Buttons

3.7.3.2 OSD Menu Level

3.7.4 Hot Keys Function

3.7.4.1 Contrast (

3.7.4.2 Brightness (

3.7.4.3 Mute On (

3.7.4.4 Mute Off ( )

3.7.4.5 Source Key Press “ Source” key to select VGA or DVI input.

)

)

)

The switch control scaler power down and turn off panel.
All function will be disable, USB 2.0 module also.

The LED color shall indicate power status as shown in
paragraph 3.8

ESC ,▽, △, ,Signal source

See Table 2. P922E 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

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Table 2 P922E OSD Control Map

1. VGA-D15 input

Level 1 Level 2 Level 3 Level 4

Detect Adj. Brightness

Detect Adj. Contrast

Detect Adj.

Main Menu

12

Audio Mute

Auto Tune

Color

Auto Tune Adjustment Scale

Image

Position

Language

Reset Yes/No
Source DVI/VGA (select)

Adjustment Scale

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

English (select)
German (select)

French (select)
Spanish (select)
Italiano (select)

中文 (option)

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

P922E

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2.DVI input

Level 1 Level 2 Level 3 Level 4

Detect Adj. Brightness

Detect Adj. Contrast

Detect Adj. Audio Mute

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P922E

Main Menu

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)

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

Spanish (select)

Italiano (select)

中文 (option)

Reset Yes/No

Source DVI/VGA (select)

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3.7.5 Accessory OSD Indications
Signal out of range An input signal which is outside the range defined in

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

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P922E

No Signal Input and power
down

3.8 Power Management

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 host CPU.
A dual color (green/amber) LED is located on the front bezel to indicate the power
management states.

Sync Power consumption

On 57W max. ON - Green
Off

Once “Esc” key initiates under power saving condition, the audio function can be

woken up

and the power consumption can not be the above definition.

Note1 : USB 2.0 module under power saving mode (or all ports aren’t connected to

any device), audio function is operating at no audio signal input.

≦ 5W (Note 1)

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.

Power

management

Off

Picture Recovery

time

≦ 3 sec

LED Color

Amber

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4. TROUBLE SHOOYING

VIDEO DOES NOT APPEAR

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R.G.B is not displayed correctly

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5. SYSTEM BLOCK DIAGRAM

MAIN SYSTEM

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POWER SYSTEM

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6. INVERTER BOARD I/O CONNECTIONS

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7. IC Pin Configuration

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8. PIN ASSIGNMENT

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MAIN/BOARD

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MODE

640*480 31K/60Hz 5.09 10.98 2.50 4.41 3.34 3.34 5.11 5.11

1024*768 60K/75Hz 5.09 10.98 2.50 4.43 3.34 3.34 5.11 5.11

1280*1024 91K/85Hz 5.09 10.98 2.50 4.45 3.34 3.34 5.11 5.11

MODE

640*480 31K/60Hz 0 0 0 0 4.98 4.96 5.11 5.11

1024*768 60K/75Hz 0 0 0 0 4.98 4.96 5.11 5.11

1280*1024 91K/85Hz 0 0 0 0 4.98 4.96 5.11 5.11

IC U1 (FDS6912A)

PIN

IC U5 (AT24C02)

PIN

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

TEST CONDITION : AC LINE IN: 110V/60Hz

PATTEN:FULL WHITE

Uint:Volt

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P922E

IC U8 (AT24C02N)

MODE

PIN

640*480 31K/60Hz 0 0 0 0 0.05 4.86 0 5.12

1024*768 60K/75Hz 0 0 0 0 0.05 4.86 0 5.12

1280*1024 91K/85Hz 0 0 0 0 0.05 4.86 0 5.12

IC U12 (AT24C16N)

PIN

MODE

640*480 31K/60Hz 0 0 0 0 5.11 5.11 0 5.11

1024*768 60K/75Hz 0 0 0 0 5.11 5.11 0 5.11

1280*1024 91K/85Hz 0 0 0 0 5.11 5.11 0 5.11

IC U13 (W981616BH-6)

PIN

MODE

640*480 31K/60Hz 3.34 0.89 0.80 0 0 0 3.34 2.11 2.13 0

1024*768 60K/75Hz 3.34 1.32 0.67 0 0.33 0.22 3.34 2.56 2.83 0

1280*1024 91K/85Hz 3.34 1.68 1.47 0 1.10 1.19 3.34 1.84 2.93 0

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8 9 10

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MODE

640*480 31K/60Hz 2.19 2.21 3.34 0.01 3.32 3.32 3.31 0 1.66 0.01

1024*768 60K/75Hz 2.80 2.82 3.34 0.02 3.31 3.31 3.30 0 1.60 0.02

1280*1024 91K/85Hz 2.94 2.94 3.34 0.04 3.29 3.30 3.28 0 0.70 0.02

IC U13 (W981616BH-6)

PIN

11 12 13 14 15 16 17 18 19 20

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P922E

IC U13 (W981616BH-6)

MODE

PIN

640*480 31K/60Hz 1.23 1.34 1.03 1.25 3.34 0 1.17 1.37 1.31 1.18

1024*768 60K/75Hz 1.08 1.06 0.73 0.76 3.34 0 1.23 0.92 1.09 1.26

1280*1024 91K/85Hz 0.60 0.59 0.44 0.42 3.34 0 0.91 0.84 0.90 0.99

IC U13 (W981616BH-6)

PIN

MODE

640*480 31K/60Hz 1.74 1.60 0 3.34 1.53 0.01 0 3.34 0.92 1.25

1024*768 60K/75Hz 1.62 1.66 0 3.34 1.53 0.02 0 3.34 1.55 0.87

1280*1024 91K/85Hz 1.68 1.67 0 3.34 1.53 0.04 0 3.34 2.14 0.80

21 22 23 24 25 26 27 28 29 30

31 32 33 34 35 36 37 38 39 40

IC U13 (W981616BH-6)

MODE

PIN

640*480 31K/60Hz 0 0.01 2.19 3.34 0.03 2.18 0 2.17 2.19 0

1024*768 60K/75Hz 0 0.01 2.86 3.34 0.02 2.82 0 2.84 2.82 0

1280*1024 91K/85Hz 0 0.28 2.93 3.34 0.01 2.94 0 2.94 2.94 0

IC U14 (W981616BH-6)

PIN

MODE

640*480 31K/60Hz 3.34 0.89 0.80 0 0 0 3.34 2.11 2.13 0

1024*768 60K/75Hz 3.34 1.32 0.67 0 0.33 0.22 3.34 2.56 2.83 0

1280*1024 91K/85Hz 3.34 1.68 1.47 0 1.10 1.19 3.34 1.84 2.93 0

41 42 43 44 45 46 47 48 49 50

1 2 3 4 5 6 7 8 9 10

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MODE

640*480 31K/60Hz 2.19 2.21 3.34 0.01 3.32 3.32 3.31 0 1.66 0.01

1024*768 60K/75Hz 2.80 2.82 3.34 0.02 3.31 3.31 3.30 0 1.60 0.02

1280*1024 91K/85Hz 2.94 2.94 3.34 0.04 3.29 3.30 3.28 0 0.70 0.02

IC U14 (W981616BH-6)

PIN

11 12 13 14 15 16 17 18 19 20

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P922E

IC U14 (W981616BH-6)

MODE

PIN

640*480 31K/60Hz 1.23 1.34 1.03 1.25 3.34 0 1.17 1.37 1.31 1.18

1024*768 60K/75Hz 1.08 1.06 0.73 0.76 3.34 0 1.23 0.92 1.09 1.26

1280*1024 91K/85Hz 0.60 0.59 0.44 0.42 3.34 0 0.91 0.84 0.90 0.99

IC U14 (W981616BH-6)

PIN

MODE

640*480 31K/60Hz 1.74 1.60 0 3.34 1.53 0.01 0 3.34 0.92 1.25

1024*768 60K/75Hz 1.62 1.66 0 3.34 1.53 0.02 0 3.34 1.55 0.87

1280*1024 91K/85Hz 1.68 1.67 0 3.34 1.53 0.04 0 3.34 2.14 0.80

21 22 23 24 25 26 27 28 29 30

31 32 33 34 35 36 37 38 39 40

IC U14 (W981616BH-6)

MODE

PIN

640*480 31K/60Hz 0 0.01 2.19 3.34 0.03 2.18 0 2.17 2.19 0

1024*768 60K/75Hz 0 0.01 2.86 3.34 0.02 2.82 0 2.84 2.82 0

1280*1024 91K/85Hz 0 0.28 2.93 3.34 0.01 2.94 0 2.94 2.94 0

IC U15 (W981616BH-6)

PIN

MODE

640*480 31K/60Hz 3.34 0.89 0.80 0 0 0 3.34 2.11 2.13 0

1024*768 60K/75Hz 3.34 1.32 0.67 0 0.33 0.22 3.34 2.56 2.83 0

1280*1024 91K/85Hz 3.34 1.68 1.47 0 1.10 1.19 3.34 1.84 2.93 0

41 42 43 44 45 46 47 48 49 50

1 2 3 4 5 6 7 8 9 10

26

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X

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MODE

640*480 31K/60Hz 2.19 2.21 3.34 0.01 3.32 3.32 3.31 0 1.66 0.01

1024*768 60K/75Hz 2.80 2.82 3.34 0.02 3.31 3.31 3.30 0 1.60 0.02

1280*1024 91K/85Hz 2.94 2.94 3.34 0.04 3.29 3.30 3.28 0 0.70 0.02

IC U15 (W981616BH-6)

PIN

11 12 13 14 15 16 17 18 19 20

Service Manual

P922E

IC U15 (W981616BH-6)

MODE

PIN

640*480 31K/60Hz 1.23 1.34 1.03 1.25 3.34 0 1.17 1.37 1.31 1.18

1024*768 60K/75Hz 1.08 1.06 0.73 0.76 3.34 0 1.23 0.92 1.09 1.26

1280*1024 91K/85Hz 0.60 0.59 0.44 0.42 3.34 0 0.91 0.84 0.90 0.99

IC U15 (W981616BH-6)

PIN

MODE

640*480 31K/60Hz 1.74 1.60 0 3.34 1.53 0.01 0 3.34 0.92 1.25

1024*768 60K/75Hz 1.62 1.66 0 3.34 1.53 0.02 0 3.34 1.55 0.87

1280*1024 91K/85Hz 1.68 1.67 0 3.34 1.53 0.04 0 3.34 2.14 0.80

21 22 23 24 25 26 27 28 29 30

31 32 33 34 35 36 37 38 39 40

IC U15 (W981616BH-6)

MODE

PIN

640*480 31K/60Hz 0 0.01 2.19 3.34 0.03 2.18 0 2.17 2.19 0

1024*768 60K/75Hz 0 0.01 2.86 3.34 0.02 2.82 0 2.84 2.82 0

1280*1024 91K/85Hz 0 0.28 2.93 3.34 0.01 2.94 0 2.94 2.94 0

IC U16 (THC63LVDM83A)

PIN

MODE

640*480 31K/60Hz 3.33 2.42 2.42 0.95 0 2.06 0.04 2.42 3.33 2.42

1024*768 60K/75Hz 3.33 2.42 2.42 1.12 0 1.45 0.01 2.42 3.33 2.42

1280*1024 91K/85Hz 3.33 2.39 2.39 1.63 0 0.69 0.01 2.39 3.33 2.39

41 42 43 44 45 46 47 48 49 50

1 2 3 4 5 6 7 8 9 10

27

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T

X

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T

X

MODE

640*480 31K/60Hz 2.42 0 0 2.42 1.21 2.42 0 2.42 0.51 0.10

1024*768 60K/75Hz 2.42 0 0 2.42 1.18 2.42 0 2.42 0.48 0.45

1280*1024 91K/85Hz 2.39 20 0 2.39 1.52 2.39 0 2.39 1.55 1.48

MODE

640*480 31K/60Hz 0 0.09 2.25 2.42 0 3.34 3.31 3.32 0 2.42

1024*768 60K/75Hz 0 0.55 1.80 2.42 0 3.34 3.31 3.32 0 2.42

1280*1024 91K/85Hz 0 1.42 0.60 2.39 0 3.34 3.31 3.32 0 2.39

MODE

640*480 31K/60Hz 1.57 3.35 0 3.33 0 0 1.31 1.22 1.29 1.24

1024*768 60K/75Hz 1.57 3.35 0 3.33 0 0 1.31 1.22 1.29 1.24

1280*1024 91K/85Hz 1.57 3.34 0 3.33 0 0 1.31 1.22 1.29 1.24

IC U16 (THC63LVDM83A)

PIN

IC U16 (THC63LVDM83A)

PIN

IC U16 (THC63LVDM83A)

PIN

11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 26 27 28 29 30

31 32 33 34 35 36 37 38 39 40

Service Manual

P922E

IC U16 (THC63LVDM83A)

MODE

PIN

640*480 31K/60Hz 1.31 1.20 0 3.33 1.21 1.30 1.25 1.27 0 2.42

1024*768 60K/75Hz 1.31 1.22 0 3.33 1.21 1.30 1.25 1.27 0 2.42

1280*1024 91K/85Hz 1.31 1.21 0 3.33 1.21 1.30 1.24 1.27 0 2.39

IC U16 (THC63LVDM83A)

PIN

MODE

640*480 31K/60Hz 1.10 1.90 0 2.41 2.38 0

1024*768 60K/75Hz 1.35 0.83 0 2.41 2.41 0

1280*1024 80K/75Hz 0.88 0.15 0 2.38 2.39 0

41 42 43 44 45 46 47 48 49 50

51 52 53 54 55 56

28

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X

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T

X

MODE

640*480 31K/60Hz 3.33 2.42 2.42 0.95 0 2.06 0.04 2.42 3.33 2.42

1024*768 60K/75Hz 3.33 2.42 2.42 1.12 0 1.45 0.01 2.42 3.33 2.42

1280*1024 91K/85Hz 3.33 2.39 2.39 1.63 0 0.69 0.01 2.39 3.33 2.39

MODE

640*480 31K/60Hz 2.42 0 0 2.42 1.21 2.42 0 2.42 0.51 0.10

1024*768 60K/75Hz 2.42 0 0 2.42 1.18 2.42 0 2.42 0.48 0.45

1280*1024 91K/85Hz 2.39 20 0 2.39 1.52 2.39 0 2.39 1.55 1.48

MODE

640*480 31K/60Hz 0 0.09 2.25 2.42 0 3.34 3.31 3.32 0 2.42

1024*768 60K/75Hz 0 0.55 1.80 2.42 0 3.34 3.31 3.32 0 2.42

1280*1024 91K/85Hz 0 1.42 0.60 2.39 0 3.34 3.31 3.32 0 2.39

IC U17 (THC63LVDM83A)

PIN

IC U17 (THC63LVDM83A)

PIN

IC U17 (THC63LVDM83A)

PIN

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

Service Manual

P922E

IC U17 (THC63LVDM83A)

MODE

PIN

640*480 31K/60Hz 1.57 3.35 0 3.33 0 0 1.31 1.22 1.29 1.24

1024*768 60K/75Hz 1.57 3.35 0 3.33 0 0 1.31 1.22 1.29 1.24

1280*1024 91K/85Hz 1.57 3.34 0 3.33 0 0 1.31 1.22 1.29 1.24

IC U17 (THC63LVDM83A)

PIN

MODE

640*480 31K/60Hz 1.31 1.20 0 3.33 1.21 1.30 1.25 1.27 0 2.42

1024*768 60K/75Hz 1.31 1.22 0 3.33 1.21 1.30 1.25 1.27 0 2.42

1280*1024 91K/85Hz 1.31 1.21 0 3.33 1.21 1.30 1.24 1.27 0 2.39

31 32 33 34 35 36 37 38 39 40

41 42 43 44 45 46 47 48 49 50

29

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X

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T

X

MODE

640*480 31K/60Hz 1.10 1.90 0 2.41 2.38 0

1024*768 60K/75Hz 1.35 0.83 0 2.41 2.41 0

1280*1024 91K/85Hz 0.88 0.15 0 2.38 2.39 0

MODE

640*480 31K/60Hz 5.11 5.11 5.11 5.11 4.97 5.11 5.11 5.11 5.11 0

1024*768 60K/75Hz 5.11 5.11 5.11 5.11 4.97 5.11 5.11 5.11 5.11 0

1280*1024 91K/85Hz 5.11 5.11 5.11 5.11 4.97 5.11 5.11 5.11 5.11 0

MODE

640*480 31K/60Hz 0 5.11 4.86 5.11 5.11 5.11 5.11 0.02 0.02 2.17

1024*768 60K/75Hz 0 5.11 4.86 5.11 5.11 5.11 5.11 0.02 0.02 2.17

1280*1024 91K/85Hz 0 5.11 4.86 5.11 5.11 5.11 5.11 0.02 0.02 2.17

IC U17 (THC63LVDM83A)

PIN

IC U18 (W78E65)

PIN

IC U18 (W78E65)

PIN

51 52 53 54 55 56

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 19 20

Service Manual

P922E

IC U18 (W78E65)

MODE

PIN

640*480 31K/60Hz 2.18 0 5.11 0.05 0.11 0.11 0.11 2.77 5.11 0.11

1024*768 60K/75Hz 2.18 0 5.11 0.05 0.11 0.11 0.11 2.77 5.11 0/11

1280*1024 91K/85Hz 2.18 0 5.11 0.05 0.11 0.11 0.11 2.77 5.11 0.11

IC U18 (W78E65)

PIN

MODE

640*480 31K/60Hz 5.11 5.11 1.65 5.11 5.11 0.60 5.11 2.61 2.95 0.98

1024*768 60K/75Hz 5.11 5.11 1.65 5.11 5.11 0.60 5.11 2.61 2.95 0.92

1280*1024 91K/85Hz 5.11 5.11 1.65 5.11 5.11 0.60 5.11 2.61 2.95 0.89

21 22 23 24 25 26 27 28 29 30

31 32 33 34 35 36 37 38 39 40

30

C

T

X

C

T

X

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T

X

MODE

640*480 31K/60Hz 0.98 1.09 1.29 5.11

1024*768 60K/75Hz 0.98 0.93 1.29 5.11

1280*1024 91K/85Hz 1.03 0.91 1.29 5.11

MODE

640*480 31K/60Hz 4.93 0.15 0 3.92 4.31 0.58 0 3.42

1024*768 60K/75Hz 0.09 3.91 0 3.91 0.42 3.60 0 0.41

1280*1024 91K/85Hz 0.09 3.90 0 3.90 0.52 3.52 0 0.48

MODE

640*480 31K/60Hz 0.58 3.89 0 3.88 0.15 5.11

1024*768 60K/75Hz 3.60 3.89 0 0.15 3.88 5.11

1280*1024 91K/85Hz 3.52 3.89 0 0.14 3.88 5.11

IC U18 (W78E65)

PIN

IC U20 (74F14D)

PIN

IC U20 (74F14D)

PIN

41 42 43 44

1 2 3 4 5 6 7 8

9 10 11 12 13 14

Service Manual

P922E

IC U601 (TL1451ACNSR)

MODE

PIN

640*480 31K/60Hz 1.74 0.98 1.25 1.24 1.89 1.71 9.02 0

1024*768 60K/75Hz 1.74 0.98 1.25 1.24 1.89 1.71 9.02 0

1280*1024 91K/85Hz 1.74 0.98 1.25 1.24 1.89 1.71 9.02 0

IC U601 (TL145ACNSR)

PIN

MODE

640*480 31K/60Hz 11.01 7.50 1.65 1.79 1.25 1.25 0.19 2.49

1024*768 60K/75Hz 11.01 7.50 1.65 1.79 1.25 1.25 0.19 2.49

1280*1024 91K/85Hz 11.01 7.50 1.65 1.79 1.25 1.25 0.19 2.49

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16

31

C

T

X

C

T

X

C

T

X

MODE

640*480 31K/60Hz 12.01 12.01 12.01 8.62 5.15 5.15 5.15 5.15

1024*768 60K/75Hz 12.01 12.01 12.01 8.62 5.15 5.15 5.15 5.15

1280*1024 91K/85Hz 12.01 12.01 12.01 8.62 5.15 5.15 5.15 5.15

MODE

640*480 31K/60Hz 12.03 12.03 12.03 9.72 3.39 3.39 3.39 3.39

1024*768 60K/75Hz 12.03 12.03 12.03 9.71 3.39 3.39 3.39 3.39

1280*1024 91K/85Hz 12.03 12.03 12.03 9.69 3.39 3.39 3.39 3.39

MODE

640*480 31K/60Hz 12.01 0 0.07 0 0 0 0 0

1024*768 60K/75Hz 12.01 0 0.07 0 0 0 0 0

1280*1024 91K/85Hz 12.01 0 0.07 0 0 0 0 0

IC U602 (9435A)

PIN

IC U603 (9435A)

PIN

IC U702 (TL5001A)

PIN

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

Service Manual

P922E

TR U801(SI8050JD) U703(IRF9Z34N)

MODE

PIN

640*480 31K/60Hz 12.01 6.84 0 5.02 2.41 12.01 0 12.01

1024*768 60K/75Hz 12.02 6.84 0 5.02 2.41 12.02 0 12.01

1280*1024 91K/85Hz 12.01 6.84 0 5.02 2.41 12.01 0 12.01

IC U802 (TDA7053A)

PIN

MODE

640*480 31K/60Hz 0 1.08 0 2.40 6.84 2.39 0 1.08

1024*768 60K/75Hz 0 1.08 0 2.40 6.84 2.39 0 1.08

1280*1024 91K/85Hz 0 1.08 0 2.40 6.84 2.39 0 1.08

1 2 3 4 5 G D S

1 2 3 4 5 6 7 8

32

C

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X

C

T

X

C

T

X

MODE

640*480 31K/60Hz 3.30 0 0 3.40 3.38 0 0 3.52

1024*768 60K/75Hz 3.30 0 0 3.40 3.38 0 0 3.52

1280*1024 91K/85Hz 3.30 0 0 3.40 3.38 0 0 3.52

MODE

640*480 31K/60Hz 5.12 0.30 5.12 5.12 5.06 4.22 0 0.04 0.75

1024*768 60K/75Hz 5.12 0.30 5.12 5.12 5.06 4.22 0 0.04 0.75

1280*1024 91K/85Hz 5.12 0.30 5.12 5.12 5.06 4.22 0 0.04 0.75

MODE

640*480 31K/60Hz 0 3.33 0.11 0 10.96 0.02 0 4.28 0.11

1024*768 60K/75Hz 0 3.33 0.11 0 10.96 0.02 0 4.28 0.11

1280*1024 91K/85Hz 0 3.33 0.11 0 10.96 0.02 0 4.28 0.11

IC U802 (TDA7035A)

PIN

TR Q2 (MMBT3906LT1) Q3 (MMBT3906LT1) Q4 (2N3904)

PIN

TR Q5 (2N3904) Q6 (2N3904) Q9 (2N3904)

PIN

9 10 11 12 13 14 15 16

E C B E C B E C B

E C B E C B E C B

Service Manual

P922E

TR Q10 (2N3904) Q602 (MMBT3906LT1) Q603 (BC817-25)

MODE

PIN

640*480 31K/60Hz 0 0.03 0.68 9.74 0 9.72 9.74 12.03 9.72

1024*768 60K/75Hz 0 0.03 0.68 9.72 0 9.70 9.72 12.03 9.70

1280*1024 91K/85Hz 0 0.03 0.68 9.71 0 9.68 9.71 12.03 9.68

TR Q606 (2N3904) Q612 (MMBT3906LT1) Q613 (BC817-25)

PIN

MODE

640*480 31K/60Hz 0 5.03 0.03 8.64 0 8.53 8.64 12.03 8.53

1024*768 60K/75Hz 0 5.03 0.03 8.64 0 8.53 8.64 12.03 8.53

1280*1024 91K/85Hz 0 5.03 0.03 8.64 0 8.53 8.64 12.03 8.53

E C B E C B E C B

E C B E C B E C B

33

C

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X

C

T

X

C

T

X

MODE

640*480 31K/60Hz 12.04 12.01 11.34 0 0 0.71 9.42 11.82 9.42

1024*768 60K/75Hz 12.04 12.01 11.34 0 0 0.71 9.42 11.82 9.42

1280*1024 91K/85Hz 12.04 12.01 11.34 0 0 0.71 9.42 11.82 9.42

MODE

640*480 31K/60Hz 12.04 0 13.14 12.05 0 12.05 12.05 12.05 12.05

1024*768 60K/75Hz 12.04 0 13.14 12.05 0 12.05 12.05 12.05 12.05

1280*1024 91K/85Hz 12.04 0 13.14 12.05 0 12.05 12.05 12.05 12.05

TR Q631 (MMBT3906LT1) Q632 (2N3904) Q702 (2N3904)

PIN

TR Q703 (MMBT3906LT1) Q704 (MMBT3906LT1) Q705 (2N3904)

PIN

E C B E C B E C B

E C B E C B E C B

Service Manual

P922E

TR Q706 (2N3904) Q707 (2N3904) Q804(2N3904)

MODE

PIN

640*480 31K/60Hz 0 8.58 0.05 0 10.10 0 0 1.08 0.11

1024*768 60K/75Hz 0 8.58 0.05 0 10.10 0 0 1.08 0.11

1280*1024 91K/85Hz 0 8.58 0.05 0 10.10 0 0 1.08 0.11

E C B E C B E C B

TR Q805 (2N3904)

MODE

PIN

640*480 31K/60Hz 0 2.43 0.11

1024*768 60K/75Hz 0 2.43 0.11

1280*1024 91K/85Hz 0 2.43 13.14

E C B

34

C

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C

T

X

C

T

X

9. PARTS LIST

ITEM PART NUMBER DESCRIPTION

1 AC1920-D01 MAIN PCBA

2 GC1920-D01 DISPLAY PCBA

3 HC1920-D01 USB

4 UC1920-D01 HEAD PHONE PCBA

5 10A19-042A LCD TFT 1280*1024(LTM190E1-L01)

6 47I00-016S INVERTER

7 0800063000 CABINET BACK

8 0820110001 CABINET FRONT

9 SSBASE-422 SUB ASSY BASE

10 SZADPT-102B SUB-Z ASSY ADAPTER

Service Manual

P922E

11 0400748300 CARTON 570*278*532

12 0510154800 HOLDER (R)

13 0510153800 HOLDER (L)

14 0670474000 LABEL CARTON (XC1920-D01)

15 0670492000 LABEL CARTON (XC1920-D10)

16 0670349500 LABEL CARTON (CIRCLE-BLUE)

17 0670469000 LABEL CARTON (ISO134062-II)

18 65S10-1805Z CABLE SIGNAL 15D-15D 180CM

19 65SA0-1801Z CABLE SIGNAL DVI-D 18P 180CM

20 SZ0013-003 SUB-Z SPEAK(L) WITH WIRE(WHITE)

21 SZ0013-004 SUB-Z SPEAK(R) WITH WIRE(RED)

35