Dell E176FPB User Manual

4.5 (2)

Dell E176FPc

Service Manual

17” LCD MONITOR

DELL E176FPc

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 OFTHIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR CHANGES, ERRORS OR OMISSIONS.

1

 

 

 

 

Dell E176FPc

 

 

 

Revision List

 

 

Revision

Release Date

 

Revise history

TPV model

 

 

 

 

 

 

 

 

 

 

 

T780KCDHK8DLNP

 

A00

Aug.-26-2005

 

Initial Release

 

 

 

T780KGDHK8DZNP

 

 

 

 

 

 

 

 

 

 

 

T780KGDHK8DENP

 

 

 

 

 

 

A01

Mar.-31-2006

Add” Definition Of Pixel Defects

 

 

 

 

 

 

 

A02

April-25-2006

Add” Max Brightness measurement

 

 

on Page43

 

 

 

 

 

 

 

 

 

 

 

 

 

A03

Mar.-30-2007

Add Mechanical Instruction in item 6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

Dell E176FPc

Table of contents

 

Table of contents ----------------------------------------------------------------------------------------------------------------

02

1. Monitor Specifications ------------------------------------------------------------------------------------------------------

04

2. LCD Monitor Description --------------------------------------------------------------------------------------------------

05

3. Operation instructions --------------------------------------------------------------------------------------------------

06

3.1 General Instructions ------------------------------------------------------------------------------------------------

06

3.2 Control buttons --------------------------------------------------------------------------------------------------------

06

3.3 On Screen Menu/Display (OSD) ---------------------------------------------------------------------------------------

07

3.4 Adjusting the Picture - ----------------------------------------------------------------------------------------------

08

4. Input/Output Specification ---------------------------------------------------------------------------------------------------

13

4.1 Input Signal Connector --------------------------------------------------------------------------------------------

13

4.2 Factory Preset Display Modes -----------------------------------------------------------------------------------------

13

4.3 Power Supply Requirements ----------------------------------------------------------------------------------------

14

4.4 Panel Specification -----------------------------------------------------------------------------------------------------

15

5. Block Diagram ----------------------------------------------------------------------------------------------------------------

18

5.1 Monitor Exploded View -----------------------------------------------------------------------------------------------

18

5.2 Software Flow Chart ----------------------------------------------------------------------------------------------------

19

5.3 Electrical Block Diagram ----------------------------------------------------------------------------------------------

21

6. Mechanical Instruction ------------------------------------------------------------------------------------------------------

23

7. Schematic Diagram -------------------------------------------------------------------------------------------------------------

28

6.1 Main Board ---------------------------------------------------------------------------------------------------------------

28

6.2 Power Board ---------------------------------------------------------------------------------------------------------------

33

8. Layout ----------------------------------------------------------------------------------------------------------------------------

35

7.1 Main Board ----------------------------------------------------------------------------------------------------------------

35

7.2 Power Board --------------------------------------------------------------------------------------------------------------

37

7.3 Key Board -----------------------------------------------------------------------------------------------------------------

40

9. Maintainability -----------------------------------------------------------------------------------------------------------

41

8.1 Equipments and Tools Requirement --------------------------------------------------------------------------------

41

8.2 Trouble Shooting ------------------------------------------------------------------------------------------------------

42

10. White Balance Adjustment ---------------------------------------------------------------------------------------------

48

11. EDID Content ---------------------------------------------------------------------------------------------------------------

49

12. ISP User Manual ---------------------------------------------------------------------------------------------------------

50

12.1 Connect ISP Writer preparation action ----------------------------------------------------------------------

50

12.2 To Use ISP WRITER ------------------------------------------------------------------------------------------------

51

12.3 Executing ISP -------------------------------------------------------------------------------------------------------------

55

13. Check List --------------------------------------------------------------------------------------------------------------------

56

14. BOM List -----------------------------------------------------------------------------------------------------------------

59

15. Definition Of Pixel Defects--------------------------------------------------------------------------------------------------

70

3

Dell E176FPc

1. Monitor Specifications

 

Screen type

Active matrix - TFT LCD

 

 

 

 

Panel Type

LM170E01-TLB3/TLB4 (LPL)

 

CLAA170EA07

(CPT)

 

 

 

 

 

 

 

Size

430mm(17.0")

 

LCD Panel

 

 

 

Pixel pitch

0.264mm(H) x 0.264mm(V)

 

 

 

 

 

Viewable angle

LM170E01-TLB3/TLB4: 70°/70° (H) 75°/65° (V) (typ.)

 

(CR>=10)

CLAA170EA07: 70°/70° (H) 67°/63° (V) (typ.)

 

 

 

 

Response time

LM170E01-TLB3/TLB4: 8ms(type)

 

CLAA170EA07: 12ms(type)

 

 

 

Video

R, G, B Analog Interface

 

 

 

 

Input

Separate Sync

H/V TTL

 

 

 

 

H-Frequency

30kHz – 80kHz

 

 

 

 

 

 

 

 

V-Frequency

55 - 75Hz

 

 

 

 

 

Display Colors

 

16.2M Colors

 

 

 

 

 

Dot Clock

 

135MHz(Max)

 

 

 

 

 

Max. Resolution

 

1280 x 1024

 

 

 

 

 

Plug & Play

 

VESA DDC

 

 

 

 

 

 

ON Mode

<45W

 

EPA ENERGY STAR®

 

 

 

 

 

 

OFF Mode

<2W

 

 

 

 

 

Input Connector

 

D-Sub 15pin

 

Input Video Signal

 

Analog:0. 7Vp-p(standard)

 

75 OHM, Positive

 

 

 

 

Maximum Screen Size

 

Horizontal : 337.92mm

 

 

Vertical: 270.336mm

 

 

 

 

 

 

 

Power Source

 

100 V ~ 240 V± 10 %VAC, 50 ± 3Hz, 60 ± 3Hz

 

 

 

Environmental

 

Operating Temp: 5° to 35°C

 

Operating Humidity: 10% to 80%

Considerations

 

 

Storage Temp.: -20° to 60°C

 

 

 

 

Monitor (Stand and Head): 5.2kg (11.5 lb)

Weight

 

 

 

Monitor Flat panel only (VESA Mode): 4.0 kg (8.8 lb)

 

 

 

 

 

Weight with packaging: 6.4 kg (14.1 lb)

 

 

 

 

4

Dell E176FPc

2. LCD Monitor Description

The LCD MONITOR will contain a main board, PWPC board, keypad board, which house the flat panel control logic, brightness control logic and DDC.

The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.

Monitor Block Diagram

 

CCFL Drive.

 

 

Flat Panel and

 

 

 

 

 

 

 

 

 

CCFL backlight

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RS232 Connector

 

 

 

 

 

 

 

 

 

 

PWPC board

 

 

Main Board

 

 

 

 

For white balance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

adjustment in factory

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

mode

 

 

 

 

Keyboard

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Video signal, DDC

 

 

 

 

 

 

 

 

 

 

 

 

AC-IN

 

 

 

 

 

 

 

 

HOST Computer

 

 

100-240V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

3. Operation instructions

3.1 General Instructions

Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences.

-The power cord should be connected.

-Connect the video cable from the monitor to the video card.

-Press the power button to turn on the monitor, the power indicator will light up.

3.2Control Buttons

1 Menu selection button

2 Brightness Contrast / Down (-) button

3 Auto-Adjust / Up (+) button

4 Power button On/Off button with indicator

A

MENU

The 'MENU' button is used to open the on-screen display (OSD), select function icons, exit from menus and sub-menus, and to exit the OSD. See Accessing the Menu System.

B

 

 

 

 

Use this button for direct access to the 'Brightness' and 'Contrast' control

 

 

 

 

 

menu.

 

 

 

 

Brightness/Contrast Hot Key

 

 

 

 

 

 

 

 

 

 

Use these buttons to adjust (decrease/increase ranges) items in the OSD.

 

 

 

B C

 

 

 

 

 

 

- and + buttons

 

 

 

 

 

 

 

 

 

 

Use this button to activate automatic setup and adjustment. The following

 

 

 

C

 

 

 

 

 

 

 

 

 

dialog will appear on screen as the monitor self-adjusts to the current input:

 

 

 

 

 

 

 

 

 

 

 

 

Auto Adjust In Progress

 

 

 

Auto Adjust

 

 

 

 

 

 

 

 

 

Auto Adjustment

button allows the monitor to self-adjust to the

 

 

 

 

 

 

 

 

 

 

incoming video signal. After using 'Auto Adjustment', you can further tune

 

 

 

 

 

your monitor by using the 'Pixel Clock' and 'Phase' controls in the OSD.

 

 

 

 

 

The green LED indicates the monitor is on and fully functional. An amber

 

 

 

D

 

 

 

 

 

 

 

 

 

LED indicates DPMS power save mode.

 

 

Power Button & Indicator

 

 

The Power button turns the monitor on and off.

 

 

 

 

 

 

 

 

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Dell E176FPc

 

3.3 On Screen Menu/Display (OSD)

 

 

 

 

 

 

 

Direct-Access Functions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Function

 

 

Adjustment Method

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Auto adjustment

 

 

Use this button to activate automatic setup and

 

 

 

 

adjustment. The following dialog will appear on

 

 

 

 

screen as the monitor self-adjusts to the current

 

 

 

 

input:

 

 

 

 

 

 

 

 

 

 

 

 

 

Auto Adjust In Progress

 

 

 

 

 

 

 

 

 

 

 

 

 

Auto Adjustment

button allows the monitor to

 

 

 

 

self-adjust to the incoming video signal. After using

 

 

 

 

'Auto Adjustment', you can further tune your monitor

 

 

 

 

by using the 'Pixel Clock' and 'Phase' controls in the

 

 

 

 

OSD.

 

 

 

NOTE: Auto Adjust will not occur if you press the button while there are no active video input signals, or attached cables

Brightness / Contrast

With the menu off, push button to display the

'Brightness' and 'Contrast' adjustment menu.

The 'Brightness' function adjusts the luminance of the flat panel.

Adjust 'Brightness' first, then adjust 'Contrast' only if further adjustment is necessary.

"+" increase 'brightness' " - "decrease 'brightness'

The 'Contrast' function adjusts the degree of difference between darkness and lightness on the display screen.

"+" increase the 'contrast' "-" decrease the 'contrast'

7

Dell E176FPc

3.4Adjusting the Picture

1.With the menu off, push the 'MENU' button to open the OSD system and display the main features menu.

A

Function icons

B

Main Menu

C

Menu icon

D

Sub-Menu name

E

Resolution

 

 

2.Push the - and + buttons to move between the function icons. As you move from one icon to another, the function name is highlighted to reflect the function or group of functions (sub-menus) represented by that icon. See the table below for a complete list of all the functions available for the monitor.

3.Push the 'MENU' button once to activate the highlighted function; Push -/+ to select the desired parameter, push menu to enter the slide bar. Then use the - and + buttons, according to the indicators on the menu, to make your changes.

4.Push the 'Menu' button once to return to the main menu to select another function or push the ‘Menu’ button two or three times to exit from the OSD.

8

Dell E176FPc

Icon

 

Menu Name and

 

Description

 

 

Sub-menus

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXIT

 

This is used to exit out of the 'Main menu'.

 

 

 

 

 

Positioning:

Horizontal

Vertical

Image settings:

Auto Adjust

Pixel Clock

'Positioning' moves the viewing area around on the monitor screen.

When making changes to either the 'Horizontal' or 'Vertical' settings, no changes will occur to the size of the viewing area; the image will simply be shifted in response to your selection/change.

Minimum is '0' (-). Maximum is '100' (+).

Even though your computer system can recognize your new flat panel monitor on startup, the 'Auto Adjustment' function will optimize the display settings for use with your particular setup.

NOTE: In most cases, 'Auto Adjust' will produce the best image for your configuration; this function can be directly access via Auto Adjustment hotkey.

The 'Phase' and 'Pixel Clock' adjustments allow you to more closely adjust your monitor to your preference. These settings are accessed through the main OSD menu, by selecting 'Image Settings'.

Use the - and + buttons to adjust away interference. Minimum: 0 ~ Maximum: 100

9

 

Dell E176FPc

Phase

If satisfactory results are not obtained using the 'Phase' adjustment, use the 'Pixel

 

Clock' adjustment and then use 'Phase' again.

NOTE: This function may change the width of the display image. Use the 'Horizontal' function of the 'Position' menu to center the display image on the screen.

Color Settings:

'Color Settings' adjusts the color temperature and saturation.

Normal Preset

'Normal Preset' is selected to obtain the default (factory) color settings.

Blue Preset

'Blue Preset' is selected to obtain a bluish tint. This color setting is typically used for text

 

based applications (Spreadsheets, Programming, Text Editors etc.).

Red Preset

'Red Preset' is selected to obtain a redder tint. This color setting is typically used for

 

color intensive applications (Photograph Image Editing, Multimedia, Movies etc.).

10

User Preset

OSD Settings:

Horizontal Position

Vertical Position

OSD Hold Time:

OSD Lock

Dell E176FPc

'User Preset': Use the plus and minus buttons to increase or decrease each of the three colors (R, G, B) independently, in single digit increments, from '0' to '100'.

NOTE: 'Color temperature' is a measure of the 'warmth' of the image colors (red/green/blue). The two available presets ('Blue' and 'Red') favor blue and red accordingly. Select each one to see how each range suits your eye; or utilize the 'User Preset' option to customize the color settings to your exact choice.

Each time the OSD opens, it displays in the same location on the screen. 'OSD Settings' (horizontal/vertical) provides control over this location.

-and + buttons move OSD to the left and right.

-and + buttons move OSD down and up.

The OSD stays active for as long as it is in use.

'OSD Hold Time': Sets the length of time the OSD will remain active after the last time you pressed a button.

Use the - and + buttons to adjust the slider in 5 second increments, from 5 to 60 seconds.

NOTE: Default 'OSD hold time' is 20 seconds.

'OSD Lock': Controls user access to adjustments. When 'Yes' (+) is selected, no user adjustments are allowed. All buttons are locked except the menu button.

All buttons can be locked or unlocked press the 'Menu' button for over 15 seconds. to unlock the OSD 'Menu'.

NOTE: When the OSD is locked, pressing the 'Menu' button will take the user directly to the 'OSD settings' menu, with 'OSD Lock' preselected on entry. Select 'No'(-) to unlock and allow user access to all applicable settings.

11

Language:

Factory Reset:

Dell E176FPc

Language sets the OSD to display in one of five languages (English, Español, Français, Deutsch, Japanese).

NOTE: The language chosen affects only the language of the OSD. It has no effect on any software running on the computer.

'Factory Reset' returns the settings to the factory preset values for the selected group of functions. 'Exit' is used to exit out of 'Factory Reset' menu.

For 'All settings', all user adjustable settings are reset at one time except 'Language settings'.

OSD Warning Messages

A warning message may appear on the screen indicating that the monitor is out of sync.

Cannot Display This Video Mode

Optimum resolution 1280 x1024 60Hz

This means that the monitor cannot synchronize with the signal that it is receiving from the computer. Either the signal is too high or too low for the monitor to use. See Specifications for the Horizontal and Vertical frequency ranges addressable by this monitor. Recommended mode is 1280 X 1024 @ 60Hz.

NOTE: The floating 'Dell - self-test Feature Check' dialog will appear on-screen if the monitor cannot sense a video signal.

Occasionally, no warning message appears, but the screen is blank. This could also indicate that the monitor is not synchronizing with the computer. See Troubleshooting for more information.

12

Dell E176FPc

4. Input/Output Specification

4.1 Input Signal Connector

PIN NO.

DESCRIPTION

PI N NO.

DESCRIPTION

1.

Red Video

9.

+5V

 

 

 

 

2.

Green Video

10.

Logic Ground

 

 

 

 

3.

Blue Video

11.

RXD

 

 

 

 

4.

TXD

12.

DDC-Serial Data

 

 

 

 

5.

Detector Pin

13.

H-Sync

 

 

 

 

6.

R-Ground

14.

V-Sync

 

 

 

 

7.

G-Ground

15.

DDC-Serial Clock

8.B-Ground

VGA Connector layout

1

5

6

10

11

15

4.2 Factory Preset Display Modes

VESA MODES

 

 

 

Horizontal

 

 

Vertical

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nominal

 

Sync

Nominal

Sync

Nominal

Mode

Resolution

Total

Frequency

 

 

Polarity

Freq.+/- 1Hz

Polarity

Pixel Clock (MHz)

 

 

 

+/- 0.5kHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

640x480@60Hz

800 x 525

31.469

 

N

59.940

N

25.175

 

 

 

 

 

 

 

 

 

VGA

640x480@75Hz

840 x 500

37.500

 

N

75.00

N

31.500

 

 

 

 

 

 

 

 

800x600@60Hz

1056 x 628

37.879

 

P

60.317

P

40.000

 

 

 

 

 

 

 

 

 

 

 

 

800x600@75Hz

1056x625

46.875

 

P

75.000

P

49.500

 

 

 

 

 

 

 

 

 

XGA

1024x768@60Hz

1344x806

48.363

 

N

60.004

N

65.000

 

 

 

 

 

 

 

 

1024x768@75Hz

1312x800

60.023

 

P

75.029

P

78.750

 

 

 

 

 

 

 

 

 

 

 

 

1152x864@75Hz

1600x900

67.500

 

P

75.000

P

108.00

SXGA

 

 

 

 

 

 

 

 

1280x1024@60Hz

1688x1066

64.000

 

P

60.000

P

108.00

 

 

 

 

 

 

 

 

 

 

1280x1024@75Hz

1688x1066

79.976

 

P

75.025

P

135.00

 

 

 

 

 

 

 

 

 

IBM MODES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nominal

 

Sync

Nominal

Sync

Nominal Pixel

Mode

Resolution

Total

Frequency

 

Polarit

Freq. +/- 1

 

Polarity

Clock (MHz)

 

 

 

+/- 0.5kHz

 

y

Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DOS

720x400@70Hz

900 x 449

31.469

 

N

70.087

P

28.322

 

 

 

 

 

 

 

 

 

13

Dell E176FPc

4.3 Power Supply Requirements

A/C Line voltage range

100 V ~ 240 V± 10 %

A/C Line frequency range

50 ± 3Hz, 60 ± 3Hz

Input Voltage transients

280 volts AC for 10 sec @40

Current

0.6A max. at 100V, 0.35A max. at 240 V

Peak surge current

< 60A peak at 240 VAC and cold starting

< 30A peak at 120VAC and cold starting

 

 

 

Leakage current

< 3.5mA

Power line surge

No advance effects (no loss of information or defect)

with a maximum of 1 half-wave missing per second

 

 

 

14

Dell E176FPB User Manual

Dell E176FPc

4.4 Panel Specification

Display Characteristics (For LM170E01-TLB3 panel)

Display Characteristics (For LM170E01-TLB4 panel)

Display Characteristics (For CLAA170EA07 panel)

15

Dell E176FPc

4.4.2 Optical Characteristics (For LM170E01TLB3/TLB4 panel)

16

Dell E176FPc

Optical Characteristics (For CLAA170EA07 panel)

17

5.Block Diagram

5.1Monitor Exploded View

18

5.2 Software Flow Chart

1

Y

2 3

N

4

5

N

 

Y

 

6

 

7

N

8

 

Y

9

 

 

10

N

11

 

 

 

 

 

Y

 

 

 

N

12

 

13

N

 

 

 

 

Y

 

Y

 

 

14

 

15

N

 

 

16

 

 

 

Y

 

 

 

 

17

 

18 N 19

Y

19

Dell E176FPc

1)MCU Initializes.

2)Is the EEprom blank?

3)Program the EEprom by default values.

4)Get the PWM value of brightness from EEprom.

5)Is the power key pressed?

6)Clear all global flags.

7)Are the AUTO and SELECT keys pressed?

8)Enter factory mode.

9) Save the power key status into EEprom. Turn on the LED and set it to green color. Scalar initializes.

10)In standby mode?

11)Update the lifetime of back light.

12)Check the analog port, are there any signals coming?

13)Does the scalar send out an interrupt request?

14)Wake up the scalar.

15)Are there any signals coming from analog port?

16)Display "No connection Check Signal Cable" message. And go into standby mode after the message disappears.

17)Program the scalar to be able to show the coming mode.

18)Process the OSD display.

19)Read the keyboard. Is the power key pressed?

20

Dell E176FPc

5.3 Electrical Block Diagram

5.3.1 Main Board

LCD Interface

(CN101)

 

 

 

Flash Memory

 

 

SST25VF020-20- 4C-SAE

 

Scalar GM2621

(U402)

 

(Include MCU, ADC, OSD)

 

 

(U401)

 

 

 

 

 

 

 

 

 

 

 

RXD

R

H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EPR_SDA

 

 

G

 

DB15_SDA,

 

 

 

 

 

 

 

 

 

 

 

 

TXD

 

V

 

 

EPR_SCL

 

 

B

 

DB15_SCL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OSD Control Interface

 

EEPROM

 

 

 

D-Sub

 

 

 

 

 

 

 

 

 

EEPROM (U404)

(CN403)

 

M24C16-MN6T

 

 

Connector

 

 

 

 

 

 

 

M24C02WMN6

 

 

(U403)

 

 

 

(CN405)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21

Dell E176FPc

5.3.2 Inverter/Power Board

22

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