0=DE, 1=EN, 2=ES, 3=FR, 4=IT, 5=JA, 6=, 7=
Change C/T immediately. And store C/T index to EEPROM. Reserved
cksum cksum cksum cksum cksum
Store data to EEPROM XX* = Non 1 value Store data to EEPROM For specified Industry Customer model. Store data to EEPROM For MTV312 MCU type For MTV312 MCU type For stand alone DDC IC For stand alone DDC IC XX* = Non 1 value
XX cksum XX cksum XX cksum NA NA NA NA NA NA NA NA
EEPROM Bank R/W (For Debug using only, not for Production Line Write EEPROM directly)
Read EEPROM Bank 0 Read EEPROM Bank 1 Read EEPROM Bank 2 Read EEPROM Bank 3 Write EEPROM Bank 0 Write EEPROM Bank 1 Write EEPROM Bank 2 Write EEPROM Bank 3 B0 B1 B2 B3 B8 B9 BA BB
Address Address Address Address Address Address Address Address
XX XX XX XX Data Data Data Data
cksum cksum cksum cksum cksum cksum cksum cksum
(For 24C08 type) (For 24C08 type) (For 24C08 type) (For 24C08 type)

5 Confidential

Note A: Byte4 (cksum) = Byte1 + Byte2 + Byte3 Note B: Data = The value write to MCU or EEPROM Note C: XX = don't care, any value (<=0xFF). When PC Host sends 0x7D command to MCU, MCU must return as following (2 bytes) Return Code Checksum error code Normal return code If normal return code is exact FCh R-Byte1 FC the above Byte3 (/data) FC R-Byte2 AA FC CF

6 Confidential

4. Wire Dressing and assembling concern

Prepare 1 panel

Assembly panel and main BKT

7 Confidential

Add 4 screw between panel and main BKT

8 Confidential

Add FFC

9 Confidential

Add Tape

10 Confidential

Assembly IF board and Power Board

11 Confidential

Assembly PCB module and main BKT

12 Confidential

Assembly IF board and FFC

13 Confidential

Add one tape

14 Confidential

Assembly lamp wire and Power Board

15 Confidential

Add one screw

16 Confidential

Add 5 screw

17 Confidential

Assembly main shielding and main BKT

18 Confidential

Add 2 screw

19 Confidential

Assembly control board wire and IF board

20 Confidential

21 Confidential

22 Confidential

Assembly Bezel and Rear Cover

23 Confidential

Add 4 screw

24 Confidential

Add 1 screw

25 Confidential

Assembly Base and Rear cover

26 Confidential

Finished

27 Confidential

28 Confidential

29 Confidential

Q7T4-FP71G LCD Monitor Service Guide Circuit Operation Theory
I. Introduction: The Q7T4 is a 17 SXGA (1280x1024) , 16.2M colors(R, G, B 6-bit data+FRC data) TFT LCD monitor. Its an analog only interface LCD monitor with a 15 pins D-sub signal cable. its compliant with VESA specification to offer a smart power management and power saving function. It also offers OSD menu for users to control the adjustable items and get some information about this monitor, and the best function is to offer users an easy method to set all adjustable items well just by pressing one key, we called it Auto key which can auto adjusting all controlled items. Q7T4 also offer DDC2 function to meet VESA standard. II. Block diagram
The Q7T4 consists of a LCD module with 4 lamps, an power board, a control board ,and a interface BD. The block diagram is shown as below.
LCD module with 4 lamps (backlight)

Inverter Power

Interface board

Control board

D-Sub AC power in
Circuit operation theory: A-1.) Interface board diagram:

MTV312M 64(AJ)

Clock Generator

140MHz ADC

RTD 2023

12801024 LCM

Keypad
(a) Circuit operation theory: A basic operation theory for the interface board is to convert input signal into digital RGB. Analog RGB signal is converted to digital signal through ADC. The microprocessor RTD2023 receives video data and optimizes the image automatically. It also supports 16 color from a 64k palette bitmap OSD, and keypad controlling. The output data are sent to LCD module. (b) IC introduction: 1.) DDC (Display Data Channel) function: We use DDC IC to support DDC/2B function. DDC data is stored in 24C04(EEPROM). Those data related to LCD monitor specification. PC can read them by SDA and SCL serial communication for IC communication for DDC2B. 2.) RTD2023 IC: There are triple ADC, LVDS transmitter ,Scaling, and OSD functions in the RTD2023 IC. Scaling IC is revolutionary scaling engine, capable of expanding any source resolution to a highly uniform and sharp image, combined with the critically proven integrated 8 bit triple-ADC and patented Rapid-lock digital clock recovery system. It also
support detect mode and DPMS control. 3.) MTV312M64: To stored the source code which is accessed by MCU to run program. 4.) EEPROM: We use 24C04 to store all the adjustable data and user settings.And use 24C02 to store DVI EDID data. A-2.) Control board introduction: There are 6 keys for user's control which includes Power, Enter, Up/Plus, Down/Minus , Exit, and iKey. The following descriptions are the introduction of these keys. (1) Power key: to turn/off power of monitor (2) Enter key: to enter sub-menus or select items. (3) Up/Plus key: to select previous and to increase adjustment (4) Down/Minus key: to select next and to decrease adjustment (5) Exit key: to back to previous menu, or leave OSD (auto save) (6) iKey: to perform auto adjustment (7) LED: It indicates the DPMS status of this LCD monitor; green light means DPMS on (Normal operating condition). Amber light means DPMS off (Powersaving).

A-3.) Power board diagram:

EMI Filter

Rectifier and filter
Isolation power transformer

Inverter circuit

PWM controller

Switching element

LDO regulator

Feedback Isolation

#1 EMI Filter This circuit (fig. 2) is designed to inhibit electrical and magnetic interference for meeting FCC, VDE, VCCI standard requirements.
Fig. 2 #2 Rectifier and filter AC Voltage (90-264V) is rectified and filtered by BD601, C605 (See Fig 3) and the DC Output voltage is 1.4*(AC input). (See Fig.3)

Fig. 3

#3 Switching element and Isolation power transformer When the Q601 turns on, energy is stored in the transformer. During Q601 turn-off period, the stored energy is delivered to the secondary of transformer. R607, C607 and D601 is a snubber circuit. R615 is current sense resistor to control output power. (See Fig.4)
Fig. 4 #4 Rectifier and filter D701 and C703 are to produce DC output. L701 is used to suppress high Frequency switching spikes. (See Fig.5)

Fig. 5

#5 PWM Controller The PWM controller NCP1200A implements a standard current mode architecture. With an internal structure operating at a fixed 40KHz. Where the switch time is dictated by the peak current set-point. When the current set-point falls below a given value. The output power demand diminishes, the IC automatically enters the so-called skip cycle mode and provides excellent efficiency.
Fig. 6 #6 Feedback circuit PC123 is a photo-coupler and TL431 is a shunt regulation. They are used to detect the output voltage change and be the primary and secondary isolation. When output voltage changes, the feedback voltage will be compared and duty cycle will be decided to control the correct output voltage. (See Fig.7)

Fig. 7

A-3.) Control board introduction: The main parts of the control board are a push button, and a LED. (a) Push button: Its a simple switch function, pressing it for ON to do the auto adjustment function, releasing it for OFF to do nothing. (c) LED: It indicates the DPMS status of this LCD monitor; green light means DPMS on (Normal operating condition). Amber light means DPMS off (Power off condition).
A-4.) Inverter diagram: 1.Block Diagram:

ON/OFF 15Vin switching

OSCILATOR CIRCUIT

TRANSFORMER

ON/OFF
PWM CONTROLLER PROTECTION TL1451 CIRCUIT AND DETECT

BRT_ADJ

2. General Specification Input Voltage: 15V Input Current: 2A max. ON/OFF Voltage: 5V PWM Duty: 5V/50KHz Output Requirement: Max. Output Current: 7.5mA Min. Output Current: 3.3mA Lamp Working Voltage: 660Vrms Open Lamp Voltage: 1500Vrms Frequency: 50KHz
3.Circuit Operation Theorem 3.1 ON/OFF SWITCH
The turn-on voltage was controlled by R815 and R816.The inverter was turned on or off by the switching transistors Q801 and Q802.

3.2 PWM Control circuit

TL1451 is a dual PWM controller.C807 and R811 decide the working frequency.BLT_ADJ signal is from control board, control pulse width then decide how much energy delivery to CCFL also decide CCFL brightness. Q810 and Q811 be the buffer to rise the drive capability and the totem poles circuit can improve a capable of driving for Q812.C813 decide the striking time delay.

3.3 Oscillator Circuit

Royer circuit uses the characteristic of transformer saturation to oscillate. When the DC power inject, Q808 or Q809 will turns on, and the current Ic increases. After a period, the transistor will leave the saturation status and Vce increase. The result causes the voltage of primary coil get lower. Finally the transistor turn off, and another transistor turn on. These statuses are repeated and the pin7 and pin8 of T801 will get a sine wave to turn on CCFL.

CON10 2060089110

I _KEY KEY_EXIT KEY_LEFT BLU ORG KEY_ RIGHT KEY_MENU PW_SW LED301 BLU ORG A2 A1 BLU/ORG J

KEY_MENU

G2 G2 G2 G2 G2 G2

KEY_ RIGHT

KEY_LEFT

KEY_EXIT

I _KEY
LED use 06.3N5YG.14X; Key use 22.40069.431
Project Code 99.L1C72.001 Title
Model Name Q7T4 CTRL BOARD

OEM/ODM Model Name NA

Size PCB P/N <Size> 48.L1C03.S02
PCB Rev. Document Number S02 99.L1C72.000-C3-304-1 of Approved By DAVEN WU

R e v. 0

Date: Thursday, August 26, 2004 Sheet Prepared By Reviewed By ANGEL HU

ALLEN PC LEE

Q7T4-FP71G LCD Monitor Service Guide Engineering Specification

Table of Contents

1. Introduction 2. Operational Specification
2.1 Power supply.... 3 2.2 Signal interface..... 4 2.3 Video performance.... 5 2.4 Scan range..... 6 2.5 Plug & Play DDC2B Support... 6 2.6 Support Timings.... 6
3. Operational & Functional Specification

3.1 Video performance.... 7 3.2 Brightness Adjustable Range.... 7 3.3 Acoustical Noise..... 7 3.4 Environment..... 7 3.5 Transportation.... 7 3.6 Electrostatic Discharge Requirements... 8 3.7 EMC..... 8 3.8 Reliability.... 8 3.9 Audio performance.... 9

4. LCD Characteristics

4.1 The Physical definition & Technology summary of LCD panel... 9 4.2 Optical characteristics of LCD panel.... 9

5. User Controls

5.1 Users hardware control definition... 10 5.2 OSD control function definition.... 10
6. Mechanical Characteristics
6.1 Dimension..... 11 6.2 Weight.... 11 6.3 Plastic..... 11 6.4 Carton..... Confidential

7. Pallet & Shipment

7.1 Container Specification..... 12 7.2 Carton Specification..... 12 Product:.... 12 Package:..... 12
8. Certification Appendix: Physical Dimension Front View and Side view
Q7T4-FP71G LCD Monitor Service Guide Engineering Specification 1. Introduction
This specification describes Q7T4, which is a 17.0 analog interface color TFT LCD monitor without audio. The monitor supports up to 1280x1024 pixel resolution and refresh rate of 75 Hz. The independent 6 bits R, G, B colors are capable of displaying 16.2M colors (RGB-6bit + FRC data). In addition, dithering function is supported. The features summary is shown below,
*All panel spec. in C201 definition depends on the variance of panel source.

Feature items

Panel supplier & module name Screen diagonal Display Format Pixel Pitch Viewing Angle (@ Contrast Ratio = 10) Analog interface with Scaling supported DVI interface with Scaling supported Video interface with Scaling supported Max resolution mode supported Number of Display Colors supported Contrast Ratio Luminance AC power input DC power input (with AC power adapter) DPMS supported LED indicator for power status showed OSD for control & information supported Multi-language supported for OSD Buttons control supported Flywheel control supported Scaling function supported Auto adjustment function supported DDC function supported (EDID ver. 1.3) Audio speakers supported Audio Jack (input connector) supported Earphone Jack (input connector) supported Microphone function supported Mechanical Tilt base design VESA wall mounting design Mechanical Rotate design Mechanical Lift base design Kensington compatible lock design

Specifications

AUO M170EG01 17.0 (432mm) SXGA / 1280 (H) x 1024 (V) 0.264 mm x 0.264 mm R/L: 70/70 degrees (typ.) and U/D: 70/60 degrees (typ.) Yes No No 1280 x 1024 @ 75Hz 16.2M colors 450:1 (typ.) 260 cd/m2 (typ.) Yes No Yes Yes Yes Yes Yes No Yes Yes Yes No No No No Yes Yes No No Yes

Remark

Further divided into v.0 and v.1 versions (spec v.1) 337.920(H) x 270.336(V)
Panel spec. With 15-pin D-sub connector
(RGB 6-bits + FRC data) White Luminance@CCFL 7.5mA (center) 90-264 Volts, 47-63 Hz. 1W at 1155 VAC 2W at 230 VAC in Power off Preferred Mode Green/Amber/Non 8 languages 6 buttons including 1 monitor power on/off control button.
i-key function DDC2B only

From -5 to +20 degree

2. Operational Specification 2.1 Power supply
Item Input Voltage range Input Current range Power Consumption DPMS Inrush Current Earth Leakage Current Hi-Pot Power Line Transient Condition
Universal input full range 90 ~ 264VAC Normal On operation DPMS Off state 110 VAC 220 VAC 264 VAC/50Hz 1. 1500VAC, 1 sec 2. Ground test: 30A, 1sec IEC1000-4-4 IEC1000-4-5 (Surge)
90~264VAC /47~63Hz < 2.0 Arms < 40 W < 1 W in power preferred mode, 115V < 2 W, 230V < 30 A (peak) < 60 A (peak) < 3.5 mA Without damage < 0.1 ohm 1KV Common: 2KV, Differential: 1KV 3 mA ~8mA 40KHz ~ 80KHz Color: Black Length: 1500 +/- 50 mm

OK N.A

LED: Green LED: Amber Cold-start (on-line test) (in-lab test)
Panel Spec. 3.0 ~ 8.0mA rms Panel Spec. 40KHz ~ 80KHz
CCFL operation range CCFL Frequency Power cord

90 ~ 264VAC 90 ~ 264VAC

2.2 Signal interface

Item Signal Cable

24-pin DVI-D 15-pin D-sub connector 24-pin DVI-D connector Signal type Level Impedance Signal type

Condition

15-pin D-Sub
Color: Black Length: 1500 +/- 30 mm Color: Black Length: 2000 +/- 50 mm See Note-1 See Note-2 Separate analog R/G/B 700 mV (peak to peak) 75 Ohms +/- 1.5 Ohms Separate H/V-sync Composite H/V-sync (Positive/Negative) Logic High: 2.4V ~ 5.5V Logic Low: 0V ~ 0.5V (TTL level)

Minimum 2.2K(pull down)

For 15-pin D-sub For 24-pin DVI-D For 15-pin D-sub

Pin assignment

Video input
For 15-pin D-sub Refer to VESA VSIS Standard V1R1 10K for application

Sync input

Level Impedance Sync Pulse Width (SPW)
0.7s < H-SPW 1H < V-SPW
Note-1: The pin assignment of 15-pin D-sub connector is as below,

Signal Assignment

Red video Green video Blue video Ground Cable Detected Red Ground Green Ground Blue Ground
PC5V (+5 volt power) Sync Ground Ground SDA H-Sync (or H+V) V-sync SCL
Note-2: The pin assignment of 24-pin DVI-D connector is as below,
TMDS RX2TMDS RX2+ TMDS Ground Floating Floating DDC Clock DDC Data Floating TMDS RX1TMDS RX1+ TMDS Ground Floating

Floating +5V Power Ground Hot Plug Detect TMDS RX0TMDS RX0+ TMDS Ground Floating Floating TMDS Ground TMDS Clock+ TMDS Clock-

2.3 Video performance

Item Max. support Pixel rate Max. Resolution Rise time + Fall time Settling Time after overshoot /undershoot Overshoot/Undershoot Condition Spec
135 MHz 1280 x 1024 < 6.25 ns (50% of minimum pixel clock period) < 5% final full-scale value < 12% of step function voltage level over the full voltage range
1280 x 1024 @ 75Hz (max. support timing) Refer to VESA VSIS Standard V1R1 Refer to VESA VSIS Standard V1R1
Q7T4-FP71G LCD Monitor Service Guide Engineering Specification 2.4 Scan range
Item Horizontal Vertical Condition Spec

30 ~ 83 KHz 56 ~ 76 Hz

Without Frame buffer
2.5 Plug & Play DDC2B Support
Item DDC channel type EDID Condition Spec

DDC2B Version 1.3

Refer to Q7C4 S/W spec. document to see the detailed EDID data definition.

2.6 Support Timings

Input Timing Resolution 640x350 720x400 640x480 640x480 640x480 640x480 800x600 800x600 800x600 832X624 1024x768 1024x768 1024x768 1024X768 1152x864 1152x870 1152x900 1152x900 1280x1024 1280x1024 1280x1024 1280x1024 Horizontal 31.47(P) 31.47(N) 31.47(N) 35.00(N) 37.86(N) 37.50(N) 37.88(P) 48.08(P) 46.86(P) 49.72(N) 48.36(N) 56.48(N) 60.02(P) 60.24(N) 67.50(P) 68.68(N) 61.80(N) 71.81(N) 64.00(P) 75.83(N) 80.00(P) 81.18(N) Vertical 70.08(N) 70.08(P) 60.00(N) 67.00(N) 72.80(N) 75.00(N) 60.32(P) 72.19(P) 75.00(P) 74.55(N) 60.00(N) 70.10(N) 75.00(P) 74.93(N) 75.00(P) 75.06(N) 66.00(N) 76.14(N) 60.00(P) 71.53(N) 75.00(P) 76.16(N) Dot Clock 25.17 28.32 25.18 30.24 31.5 31.5 40.00 50.00 49.50 57.29 65.00 75.00 78.75 80.00 108.00 100.00 94.50 108.00 108.00 128.00 135.00 135.09 Actual Output Actual display 1280x943 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024 1280x1024
Remark DOS DOS DOS Macintosh VESA VESA VESA VESA VESA Macintosh VESA VESA VESA Macintosh VESA Macintosh SUN 66 SUN VESA IBM1 VESA SPARC2

Note-3: P, N stands for Positive, Negative polarity of incoming H-sync/V-sync (input timing).
Q7T4-FP71G LCD Monitor Service Guide Engineering Specification 3. Operational & Functional Specification 3.1 Video performance

5. User Controls 5.1 Users hardware control definition
Item Monitor Power button Enter button Right/Inc. button Left/Dec. button Exit /Volume button I-key button Mode Selection button Mute button Input source select button Condition Spec OK N.A Remark
5.2 OSD control function definition
Item Auto Adjust Brightness Contrast Horizontal Position Vertical Position Pixel Clock Phase Color OSD Position OSD Time Language Recall Mode Selection Condition Spec

Auto-Geometry

Bluish Reddish sRGB User: Separate R/G/B adjustment
OSD Horizontal position OSD Vertical position From 5 sec to 60 sec 8 languages Color recall Recall All
Input Select Sharpness Display Information Volume Mute Hot key for Brightness Hot key for Contrast Hot key for Volume Hot key for Mode
D-sub DVI For input timing
* The detailed firmware functions specification, please refer to C212 S/W spec. document.
6. Mechanical Characteristics 6.1 Dimension
Item Bezel opening Monitor without Stand Monitor with Stand Carton Box (outside) Tilt and Swivel range Condition
L x W x H mm L x W x H mm L x W x H mm
339.84 x 272.24 mm 323.75*378*60.5mm 362*378*135.31 mm 456(L)*423(W)*114(H) Tilt: -5 ~ +20 degree Swivel: 0 degrees

6.2 Weight

Item Monitor (Net) Monitor with packing (Gross) Condition Spec

3.8 Kg 5.7 Kg

6.3 Plastic
Item Flammability Heat deflection To UV stability Resin Texture Color Condition

ABS ABS

94-HB 65 Delta E < 8.0 MPRII: ABS (VW55/VE0856/D350) MT-11020 BCS-Y5003A
Bezel texture MT-11000 Bezel painting T8020C
Q7T4-FP71G LCD Monitor Service Guide Engineering Specification 6.4 Carton
Item Color Material Compression strength Burst Strength Stacked quantity Condition Spec
Kraft B Flute 288 KGF 16 KGF/cmLayers
7. Pallet & Shipment 7.1 Container Specification

Stowing Type Container

Quantity of products (sets) (Every container)
Quantity of Products (sets) (Every Pallet)
Quantity of pallet (sets) (Every Container)

1080 2520

Pallet A: 90 Pallet B: 72 Pallet A: 90 Pallet B: 72 X X X X
Pallet A: 12 Pallet B: 12 Pallet A: 14 Pallet B: 14 X X X X

With pallet

Without pallet

7.2 Carton Specification

Product:

Net Weight (Kg)

Gross Weight (Kg)
Dimension w/o Base L*W*H (mm)

323.75*378*60.5mm

Dimension w/ Base L*W*H (mm)

362*378*135.31 mm

Package:
Carton Interior Dimension (mm) L*W*H Carton External Dimension (mm) L*W*H

448(L)*415(W)*100(H)

456(L)*423(W)*114(H)

8. Certification

Item Environment Condition
Green design Blue Angel E-2000
API Doc. 715-C49 German Standard Switzerland

OK N.A

ISO14000 Requirement

1 RX0+

AT24C02A R RX1M R R 29 4.7K D D C _WP_D
TP19 TP20 TP21 TP22 TP23 TP24 Hot- Plug R 30 10K
1 DVI_SCL DVIPC5V DVI_SDA RXC+ RXC3.3V_MCU RX1-

RX2M 3.3V_MCU

2022009024 1

D6 6.2V 1

D7 6.2V
Project Code 99.L1C72.001 Title Size P CB P/N <Size> 48.L1C01.S02
Model Name Q7T4 INTERFACE BOARD
PC B Rev. Document Number S02 99.L1C72.000-C3-304-of 6 Ap proved By D AV EN WU

Re v. 1

Date: Thursday, July 29, 2004 Prepared By AN GEL HU
Sheet R eviewed By ALLEN PC LEE
Delete FB1, C20; FB2, C25 ; 6/16 change FB3,FB4,FB5 from 0805 to 0603

C 17 3.3V_MCU

R 3.3DVCC F B220 OHM C 35 0.1U C 36 0.1U C 37 0.1U C 38 0.1U C 39 0.1U C 40 0.1U C 41 0.1U

18P J C 18

Y1 24.576MHZ

R 3.3DVCC

R 2.5DVCC
2.5V Power 2.5V Power 2.5V Power 2.5V Power
3.3V Ground 3.3V Ground 3.3V Ground 3.3V Ground 3.3V Ground 3.3V Ground 3.3V Ground
XO R 3.3DVCC TMDS_VCC C 21 0.1U C 22 0.1U
2.5V Ground 2.5V Ground 2.5V Ground 2.5V Ground
3.3V Power 3.3V Power 3.3V Power 3.3V Power 3.3V Power 3.3V Power 3.3V Power
C 34 22U 25V <Spec>
18P J R 3.3DVCC BLUE+ BLUEGREEN+ GREENR ED+ R EDAD C _VCC C 24 0.1U 40 H S YN C V SYN C 42 43
XO XI DPLL_VDD APLL_VDD DPLL_GND APLL_GND PLL_TEST1 PLL_TEST2
TCON[12]/COUT/PWM2 PWM0/REFCLK TCON[13]/COUT/PWM2 AR1N AR1P/TCON[0] AR2N/TCON[1] AR2P/TCON[5] AR3N/TCON[6] AR3P/TCON[7] AG1N/TCON[8] AG1P/TCON[9] AG2N/TCON[10] AG2P/TCON[11] BG3N BG3P BCLKN BCLKP BB1N BB1P BB2N BB2P BB3N BB3P

VOL_ADJ + C 19 4.7U 25V

+ 2 C 23 4.7U 25V

C 26 0.1U

C 27 0.1U

C 28 0.1U

C 29 0.1U R 38 4.7K R 39 1K RX2P RX2M RX1P RX1M RX0P RX0M RXCP RXCM
TMDS_TST/PWM1 EXT_RES RX2P RX2N RX1P RX1N RX0P RX0N RXCP RXCN TMDS_VDD TMDS_VDD TMDS_VDD TMDS_VDD TMDS_GND TMDS_GND TMDS_GND TMDS_GND B+ BSOG/ADC_TEST G+ GR+ RADC_VDD ADC_VDD ADC_VDD ADC_REFIO ADC_GND ADC_GND ADC_GND ADC_GND AHS AVS SCLK SDIO[0] TCON[4]/SDIO[1] TCON[3]/SDIO2] TCON[2]/SDIO[3]/PWM2 SCSB RESET#

TMDS_VCC

RTD2523
+2.5V F B220 OHM C 43 0.1U C 44 0.1U C 45 0.1U
AG3N/TEAN AG3P/TEAP ACLKN/TEBN ACLKP/TEBP AB1N/TECN AB1P/TECP AB2N/TECLKN AB2P/TECLKP AB3N/TEDN AB3P/TEDP BR1N/TOAN BR1P/TOAP BR2N/TOBN BR2P/TOBP BR3N/TOCN BR3P/TOCP BG1N/TOCLKN BG1P/TOCLKP BG2N/TODN BG2P/TODP
RXOIN0RXOIN0+ RXOIN1RXOIN1+ RXOIN2RXOIN2+ RXOCKINRXOCKIN+ RXOIN3RXOIN3+ RXEIN0RXEIN0+ RXEIN1RXEIN1+ RXEIN2RXEIN2+ RXECLKRXECKIN+ RXEIN3RXEIN3+
C 42 22U 25V <Spec>

C 46 0.1U

3.3V_MCU F B220 OHM C 31 0.1U C 32 0.1U C 33 0.1U

AD C _VCC

125 126
C 30 22U 25V <Spec>

RESET RTD_RESET

R 40 R 41
RTD_SCLK RTD_SDO/SDI S DIO1 S DIO2 S DIO3 RTD_SCSB

TCON[11]/V[0] TCON[10]/V[1] TCON[9]/V[2] TCON[8]/V[3] TCON[7]/V[4] TCON[6]/V[5] TCON[5]/V[6] TCON[1]/V[7] TCON[0]/VCLK
DDCSDA DDCSCL DDCSDA2 DDCSCL2

R 67 4.7K

D SUB_SDA D SUB_SCL
delete RN1, add R65 R66;Delete RN2 Add R67; R35: Delete R65,R66 0615
delete RN4,RN5,RN6,RN8; Q1,R44,C49,R46,R47
I - KEY RTD_SCSB PANEL_ON D-detect PW _SW KE Y_MENU 3.3V_MCU 3.3V_MCU 1

C 47 0.1U 3 4

U4 A0 A1 A2 GND VCC WP SCL SDA 6 5
**C50 close to scaler, R43 close to MCU.

R 42 4.7K

R 43 4.7K

SC L SD A

DA0/P5.0

DA1/P5.1

DA2/P5.2

DA3/P5.3

DA4/P5.4
C 48 0.22U K R 45 4.7K 11 RST VDD P6.3/AD3 VSS X2 X1

DA5/P5.5

RESET 3.3V_MCU 3.3V_MCU
R 68 DA8/HLFHO DA9/HALFV 29 K EY_RIGHT L ED_ORG LE D_GRN BL_ON VOL_ON DSUB_SCL 3.3V_MCU D D C _ WP_D D D C_WP_A 4.7K 3.3V_MCU

AT24C04N-10SI-2.7

HBLANK/P4.1 VBLANK/P4.0 DA7/HCLAMP
C 50 6.8P J Y2 12MHZ SD A SC L D D C _WP_A

SOCKET P/N: 22.10079.044

DA6/P5.6 P6.7/DA13 P6.6/DA12

C 51 6.8P J

ISDA/P3.4/T0 ISCL/P3.5/T1 STOUT/P4.2 P6.2/AD2/HLFHI HSDA/P3.1/Txd P1.0 P3.2/INT0 P6.1/AD1 P6.0/AD0 MTV312MV64
P6.5/DA11 P6.4/DA10 HSCL/P3.0/Rxd

D D C _ WP_D

UGND GND VIN

VOUT 3

D SUB_SDA RTD_SDO/SDI SDIO1 SDIO2 SDIO3 RTD_SCLK KEY_LEFT KEY_EXIT A-detect RTD_RESET
C 54 100P 50V J C 55 100P 50V J TP25 TP26 J12 L4 Z30 TP27 LOHM TP28 TP29 TP31

C 52 0.1U

G950T65U

C 53 0.1U

BL_ON +5V 3.3V_MCU VOL_ON
VOL_ADJ 3.3V_MCU 3.3V_MCU

2072060206

C 58 C 64 220P J R 220 0.1U

C 0.1U

+ C 56 22U 25V

1 + C 57 22U 25V

C 61 0.1U

C 62 0.1U

C 63 0.1U
2 L ED_ORG L ED_ORG R 48 10K 2N3906 Q2

LE D_GRN

2N3906 Q3 R 51

C 65 0.1U

C 66 0.1U J4 TP32 TP33 TP34 TP35 TP36 TP37 TP38 TP39 TP2060091109 R 52 0
KEY_EXIT KEY_LEFT K EY_RIGHT K EY_MENU PW _SW I - KEY

L6 R 55 1K R 56 1K

C 67 100P 50V J

C 68 100P 50V J

C 69 100P 50V J

C 70 100P 50V J

C 71 100P 50V J

C 72 100P 50V J

+5V 5V_PANEL 3 1

R59 100K 1 3

Q4 ELM13401CA 2 2

C73 22U 25V

C74 0.1U

+5V Q5 2N3904

PANEL_ON
20K 1 + 2 C75 OPEN 25V R61 10K

C76 0.1U

J5 GTP3 TPTPTP7 TPTPTPTPTPTP14 TPTP17 TPTPTPTPTPTP24 TPTPTPTPTPTPG2 G30 G2 20K2085030

5V_PANEL R62 R63 R0 0

RXEIN3+ RXEIN3RXECKIN+ RXECLKRXEIN2+ RXEIN2RXEIN1+ RXEIN1RXEIN0+ RXEIN0RXOIN3+ RXOIN3RXOCKIN+ RXOCKINRXOIN2+ RXOIN2RXOIN1+ RXOIN1RXOIN0+ RXOIN0-
Project Code 99.L1C72.001 Title Size PCB P/N <Size> 48.L1C01.S02
PCB Rev. Document Number S02 99.L1C72.000-C3-304-6 of Approved By DAVEN WU

R e v. 1

Date: Thursday, July 29, 2004 Prepared By ANGEL HU
Sheet Reviewed By ALLEN PC LEE
Optical Points OP1 OP OP2 OP OP3 OP

H1 HOLE-V8

HOLE-V8
P C B R ev. Document Number S02 99.L1C72.000-C3-304-of 6 A pproved By DAVEN W U
D ate: Thursday, July 29, 2004 Prepared By ANGEL HU
1. Add C20, C25, C49, C77, R35
P r o j e c t Code 9 9.L 1 C72.001 Title S ize P C B P /N <Size> 4 8.L 1 C 01.S02
Mo d e l Nam e Q7T4 I N T E R FAC E B OAR D
OE M/OD M Mo d e l Nam e NA
P C B R e v. D o c u m e n t Num ber S9.L 1 C 7 2.000-C3-304-of 6 A p p r o ve d B y D AVEN WU
D a te : Th u r s d a y, J u l y , 2004 P r e p a r e d By
S h eet R e vi e w e d B y AL L E N P C L EE

A N GE L H U

Q7T4-FP71G LCD Monitor Service Guide Trouble Shooting
Q7T4 TROUBLE SHOOTING GUIDE No Display or display is unstable: 1.1 Interface Board:
No picture or picture unstable

Power off No

Turn on power
Does cable plugs in connector? Yes
Check all of wire then turn on power switch again.

Does power stable? Yes

Check Power BD
Is LED light green/orange? Yes

Check control BD

Is LED status normal? Yes
Check Flash Rom or replace it
Does crystal work correctly? Yes
Check crystal CKT or replace it
Is interface BD normally? Yes

Replace interface BD

Replace panel

2. BUTTON function:

2.1 Control Board

OSD is not working Yes

Is control BD connecting?
Plug control BD then retry
Is bottom switch normally?
Replace control BD then retry
No Replace Control BD Is OSD working??

No Check Interface BD

3. OSD function:

OSD doesnt work

Is control BD working?

Replace control BD

Check interface BD

4. Power Board

Backlight didn't shine
Y Replace Q761 IC801 PIN 9 IS 15V? N N Plug CN701 again or checking I/F BD PWM existed? (BLT_ADJ) Y N Plug CN601 again or checking PW BD Turn on level existed? (BLT_ON) Y N Insert them again Check CN801, CN802 was pluged properly? Y

Y LED shined? N Y 3.3V existed? Y Replace new fuse N IS I/F board connected? N
Replace new fuse Y Check IC701 OK? Replace IC701
N Replace IC801,Q805 Checking F601 Broke? N Y Replace new fuse
Y Check IC601 Vcc existed? N
Replace IC601,Q602,Q603 R602
Replace IC602, IC702,D701 or check I/F BD
BENQ LCD Q7T4(FP71G) Spare Parts List

P/N: 99.L1C72.ASE

ITEM DESCRIPTION
PART NO. 55.L1C01.001 71.02023.00E 72.02402.C01 72.02404.N01 74.95065.03C 71.31264.A03 55.L1C02.001 55.L1C03.001 56.91L83.011 60.L1C01.001 60.L1C02.001 60.L1C03.001 44.L1C01.001 47.L1C01.001 47.L1C02.001 50.L9005.501 53.L1C01.001 60.L1C04.001

LOCATION

PCBA I/F BD MI AUO M170EG01 IC CONTROLER RTD2023 QFP 128P IC EEPROM AT24C02N-10SI-1.8SON IC EEPROM AT24C04N-10SI-2.7SON IC VR G950T65U SOT-223 IC FLASH MTV312MV64 (AJ) PLCC44 PCBA SPS BD MI QT74 EG01 PCBA CTRL BD MI Q7T4 LCDM 17 M170EG01 V.1 AUO ASSY FC ABS 8020C Q7T4 ASSY RC ABS 5003A Q7T4 ASSY BASE-CLUM ABS 5003A Q7T4 CTN B 456*423*114 Q7T4/BENQ CSN BTM EPS Q7T4 CSN TOP EPS Q7T4 CABLE SIGNAL 15/15P CORE*1 1.5M CD MANUAL Q7T4 ASSY BASE ABS 5003A Q7T4

U3 U1 U4 U6 U5

* THIS PARTS LIST MAY BE SUBJECT TO CHANGE WITH PRIOR NOTICE BY CSD OF BENQ.

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