IBM ThinkVision L150 Manuale utente

IBM 15” Service Manual

SERVICE MANUAL

15” LCD Monitor

IBM L150 / L150P

THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE

EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT

GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND

DISCLAIMS RE LIABILITY FOR CHANGES, ERRORS OR OMISSIONS.

MANUFACTURE DATA ：May-27-2003 Revision：

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IBM 15” Service Manual

Table of Contents

Table of Contents ……………………………………………………………2.

Revision list ……………………………………………………………4.

1. MONITOR SPECIFICATIONS …………………………………………5.

2. LCD MONITOR DESCRIPTION ………………………………………..6.

3. OPERATING INSTRUCTIONS …………………………………………7.

3.1 GENERAL INSTRUCTIONS ………………………………………………7.

3.2 CONTROL BUTTONS ……………………………………………………..7.

3.3 ADJUSTING THE PICTURE ……………………………………………….8.

4. Input/Output Specification ………………………………………………9.

4.1 Input Signal Connector ……………………………………………………..9.

4.2 Factory Preset Display Modes ……………………………………….9.

4.3 Power Supply Requirements ………………………………………..11.

4.3.1 Input Requirements …………………………………………………….11.

4.3.2 Output Requirements …………………………………………………..11.

4.4 PANEL SPECIFICATION (Hannstar) ……………………………...12.

4.4.1 Panel Feature …………………………………………………………….12.

4.4.2 Display Characteristics …………………………………………………12.

4.4.3 Optical Characteristics ………………………………………………….12.

4.4.4 Parameter guide line for CCFL Inverter ………………………………..13.

5. Block Diagram …………………………………………………………………14.

5.1 Monitor Exploded View ………………………………………………14.

5.1.1 L150 Model ………………………………………………………………..14.

5.1.2 L150P Model ………………………………………………………………14.

5.2 Software Flow Chart …………………………………………………….18.

5.3 Electrical Block Diagram …………………………………………….20.

5.3.1 Main Board ………………………………………………………………20.

5.3.2 Inverter/Power Board …………………………………………………...21.

6. Schematic ……………………………………………………………………….23.

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IBM 15” Service Manual

6.1 Main Board ………………………………………………………………….23.

6.2 Inverter/Power Board …………………………………………………26.

6.3 KeyPad Board ……………………………………………………………27.

7. PCB Layout ……………………………………………………………………28.

7.1 Main Board …………………………………………………………………28.

7.2 Inverter/Power Board ………………………………………………….30.

7.3 Keypad Board …………………………………………………………….31.

8. Maintainability …………………………………………………………………32.

8.1 Equipments and Tools Requirements .……………………………32.

8.2 Trouble Shooting …………………………………………………………33.

8.2.1 Main Board .………………………………………………………………33.

8.2.2 Power/Inverter Board ……………………………………………………..36.

8.2.3 Key Pad Board …………………………………………………………….38.

9. White-Balance, Luminance adjustment………………………………..39.

10. EDID Content …………………………………………………………………..40.

11. BOM List …………………………………………………………………………42.

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IBM 15” Service Manual

Revision List

Revision Date Change Description

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IBM 15” Service Manual

1. MONITOR SPECIFICATIONS

Driving system TFT Color LCD

LCD Panel Size 38.1cm(15.0")

Pixel pitch 0.297mm( H )x 0.297mm( V )

Viewable angle 130˚(H) 100˚(V)

Response time (typ.) 45 ms for hannstar panel

40 ms for CPT panel

Video Analog (L150) / Hybrid (L150P)

Input Sync. Type H/V TTL

H-Frequency 30kHz – 60kHz

V-Frequency 55-75Hz

Display Colors Over 16 million Colors

Dot Clock 80MHz

Max. Resolution 1024 x 768

Plug & Play VESA DDC2BTM

Power Consumption ON Mode <30W

OFF Mode <2W

Maximum Screen Size Horizontal : 12.0”(304.128mm)

Vertical : 9.0”(228.096mm))

Power Source 100~240VAC,47~63Hz

Environmental

Considerations

Operating Temp: 5°C to 35°C

Storage Temp.: -20°C to 60°C

Operating Humidity : 20% to 80%

Weight (N. W.) Packaged 6.3 kg , 13.89 lbs for L150

6.8 kg , 14.99 lbs for L150P

Unpackaged

4.8 kg , 10.58 lbs for L150

5.3 kg , 11.69 lbs for L150P

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IBM 15” Service Manual

2. LCD MONITOR DESCRIPTION

The LCD MONITOR will contain an main board, an inverter/power board, keypad board and internal

adapter 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.

Power board

(

include: ada

ter, inverter

)

Flat Panel and

CCFL backlight

Main Board

Keyboard

RS232 Connector

For white balance

adjustment in factory

mode

HOST Computer

CCFL Drive.

AC-IN

100V-240V Video signal, DDC

Monitor Block Diagram

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IBM 15” Service Manual

3. OPERATING 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.

3.2 CONTROL BUTTONS

-Power Button:

When pressed, the monitor enters the off mode, and the LED turns blank. Press again to

restore normal status.

-Left / Right Button:

The Left/Right Button is used to control the monitor functions. Press to switch functions

or adjust settings.

- Auto Adjust Key:

The Auto Adjust Key is used to automatically set the H Position, V Position, Clock and Phase.

-Power Indicator:

Green — Power On mode.

orange — Power Saving mode.

Blank —Power Off Mode.

LED = GREEN, BLINKING (0.5s period) —Out of Range

A. Exit

B. Left button / Auto button

C. Right button/Brightness Menu button

D. Menu button

E. Power button

F. Indicator light

3.3 ADJUSTING THE PICTURE

Control Buttons

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IBM 15” Service Manual

Contrast Adjusts over all screen brightness.

Brightness Adjusts difference between light and dark areas.

Horizontal Position Moves image left or right.

Vertical Position Moves image up or down.

Automatic Optimizes image(size, position, phase and clock).

6. Clock Clock Adjusts picture Clock.

7. Phase Phase Adjusts picture Phase.

Color Adjusts intensity or red, green and blue.

Information Shows resolution, refresh rate, and product

details.

10.

Menu Language Changes language of menu.

11.

Menu Position Adjusts menu location.

12.

Factory Default Resets monitor to original settings.

13.

Accessibility Change button repeat rate menu time-out settings.

14. Exit Exit Save user adjustment and OSD disappear.

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IBM 15” Service Manual

4. Input/Output Specification

4.1 Input Signal Connector

PIN NO.

DESCRIPTION PI N NO. DESCRIPTION

1. Red 9. +5V

2. Green 10. Detect Cable

3. Blue 11. NC

4. Ground 12. DDC-Serial Data

5. Ground 13. H-Sync

6. R-Ground 14. V-Sync

7. G-Ground 15. DDC-Serial Clock

8. B-Ground

VGA connector layout

610

11 15

4.2 Factory Preset Display Modes：

VESA MODES

Horizontal Vertical

Mode Resolution Total

Nominal

Frequency

+/- 0.5kHz

Sync

Polarity

Nominal

Freq.

+/- 1 Hz

Sync

Polarity

Nominal

Pixel

Clock

(MHz)

640x480@60Hz 800 x 525 31.469 N 59.940 N 25.175

640x480@72Hz 832 x 520 37.861 N 72.809 N 31.500

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@72Hz 1040 x 666 48.077 P 72.188 P 50.000

SVGA

800x600@75Hz 1056x625 46.875 P 75.000 P 49.500

1024x768@60Hz 1344x806 48.363 N 60.004 N 65.000

1024x768@60Hz 1312x813 48.78 N 60.00 N 64.000

1024x768@70Hz 1328x806 56.476 N 70.069 N 75.000

1024x768@72Hz 1304x798 57.515 P 72.074 P 75.000

1024x768@75Hz 1328x804 60.200 N 74.90 N 80.000

XGA

1024x768@75Hz 1312x800 60.023 P 75.029 P 78.750

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IBM 15” Service Manual

Addressability Vt. Frequency (Hz)

640 x 350 70

640 x 480 60

640 x 480 66

640 x 480 72

640 x 480 75

720 x 400 70

800 x 600 60

800 x 600 72

800 x 600 75

1024 x 768 60

1024 x 768 70

1024 x 768 75

IBM MODES

Horizontal Vertical

Mode Resolution Total

Nominal

Frequenc

+/-

0.5kHz

Sync

Polarit

Nomina

Freq.

+/- 1 Hz

Sync

Polarity

Nominal

Pixel

Clock

(MHz)

DOS* 720x400@70

Hz 900 x 449 31.469 N 70.087 P 28.322

DOS*

640x350@70

Hz 800 x 449 31.469 N 70.087 P 25.175

MAC MODES

VGA

640x480@67

Hz 864x525 35.000 N 66.667 N 30.240

SVGA

832x624@75

Hz 1152x667 49.725 N 74.551 N 57.2832

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