IBM T560, 6656-HW2, 6656-HG2 Service Manual

COLOR MONITOR

SERVICE MANUAL

CAUTION

BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS
IN THIS MANUAL.

MODEL: T560 (6656-HW2)

T560 (6656-HG2)

SPECIFICATIONS

- 2 -

1. LCD CHARACTERISTICS

Type : TFT XGA LCD
Size : 15 inch (38.35cm)
Pixel Pitch : 0.297mm(H) x 0.297mm(V)
Pixel Format : 1024 x 768 pixels (XGA)

RGB Stripe Arrangement
Color Depth : 6-bit with FRC/16M color
Active Video Area : 304.128mm x 228.096mm
Surface Treatment : Anti-Glare, Hard Coating (3H)
Backlight Unit : CCFL (Cold Cathode

Fluorescent Lamp)

2. OPTICAL CHARACTERISTICS

2-1. Viewing Angle by Contrast Ratio

≥

10
Left : 60° typ., 55° min.
Right : 60° typ., 55° min.
Top : 45° typ., 40° min.
Bottom : 45° typ., 40° min.

2-2. Luminance : 250 cd/m

2

typ.

2-3. Contrast Ratio : 300 : 1 typ.

3. SIGNAL (Refer to the Timing Chart)

3-1. Analog Video Input

1) Video Input Range : 0~0.7V ± 5%

2) Video Termination Impedance : 75Ω ±5%

3) Sync Type : Separate TTL

4) Sync Level : TTL Low ≤ 0.8V, High ≥ 2.0V

3-2. Digital Video Input

DDWG DVI Standard 1.0

3-3. Operating Frequency

Horizontal : 31 ~ 61 kHz
Vertical : 56 ~ 75 Hz

4. POWER SUPPLY

4-1. Power Adaptor

Input : AC 90~264V, 50/60Hz 1.2A
Output : DC 12V 3A

4-2. Power Consumption

5. ENVIRONMENT

5-1. Operating Temperature: 10°C~35°C (50°F~95°F)

(Ambient)

5-2. Relative Humidity : 10%~80%

(Non-condensing)

5-3. Altitude : 0~10,000ft (3,657m)

6. DIMENSIONS (with TILT/SWIVEL)

1) Full Up Condition;
Width : 365.2 mm (14.38'')
Depth : 235 mm (9.25'')
Height : 435.8 mm (17.16'')

2) Folded Condition;
Width : 365.2 mm (14.38'')
Depth : 86.5 mm (3.41'')
Height : 305.6 mm (12.03'')

7. WEIGHT (with TILT/SWIVEL)

Net. Weight : 4.9 kg (10.80 lbs)
Gross Weight : 7.7 kg (16.975 lbs)

SPECIFICATIONS ................................................... 2

PRECAUTIONS ....................................................... 5

TIMING CHART ....................................................... 6

OPERATING INSTRUCTIONS .................................7

WIRING DIAGRAM ................................................. 8

DISASSEMBLY ....................................................... 9

BLOCK DIAGRAM ................................................. 11

DESCRIPTION OF BLOCK DIAGRAM.................. 12

ADJUSTMENT ...................................................... 13

TROUBLESHOOTING GUIDE .............................. 14

PRINTED CIRCUIT BOARD................................... 18

EXPLODED VIEW...................................................20

EXPLODED VIEW PARTS LIST..............................21

REPLACEMENT PARTS LIST ...............................23

PIN CONFIGURATION............................................27

SCHEMATIC DIAGRAM......................................... 28

MODE

POWER ON (NORMAL)

STAND-BY

SUSPEND

OFF

POWER OFF

H/V SYNC

ON/ON
OFF/ON
ON/OFF

OFF/OFF

-

POWER CONSUMPTION

less than 30 W

less than 3 W
less than 3 W

less than 3 W
less than 3 W

LED COLOR

GREEN

AMBER
FLASHING AMBER
FLASHING AMBER

OFF

VIDEO

ACTIVE

OFF
OFF
OFF

-

W

H

D

W

D

H

- 3 -

Tilt Range : -37° ~ 145°
You can tilt the screen backward and forward as shown below(Figure A).

Height Range

You can adjust height of the screen(Figure B).

Landscape & Portrait

This monitor offers the ability to rotate between landscape and portrait modes(Figure C).
The monitor rotates from Landscape to Portrait through 90°clockwise and from Portrait to
Landscape through 90°anti-clockwise.

Adjusting the Monitor Position

(Figure A)

-37

+145

(Figure B)

Maximum:

4.87 inch(123.8 mm)

Maximum:

3.863 inch(98.1mm)

(Figure C)

- 4 -

To obtain the correct cables and/or to get further instructions on installing them, call the IBM
HELPCENTER at the above numbers or contact your dealer, retailer, or other IBM authorized Servicer.

Alternative mounting options for your IBM Flat Panel Monitor may be available from specialist suppliers.
To attach the monitor to an arm or a surface of wall, please follow the instructions below:

1. Power off the monitor.

2. Fold the monitor arm in the order of Figure (A), (B) and (C) as shown above.

3. Place the monitor on a stable and shock-resistant floor, with the front of the monitor at the bottom.

4. Hold the metal clip and push it carefully until it clamps both of the stand and the arm firmly, as shown in
Figure (D) above. (The metal clip is used to keep the arm folded.)

5. You have to use the four screw holds on the bottom of the stand to attach the monitor to the surface of
wall. For additional information, see the instructions supplied with the purchased arm.

6. Locate a place to which you want to attach the monitor. When locating the place, you have to consider
the lengths of the signal cable and the power cord.

7. Attach the monitor to the place you selected in the step 6, and then reconnect the signal cable and the
power cord to the monitor.

(A)

(B)

(C)

( )

Metal clip

Screw holds

VESA Wall Mounting

- 5 -

WARNING FOR THE SAFETY-RELATED COMPONENT.

• There are some special components used in LCD
monitor that are important for safety. These parts are

marked on the schematic diagram and the
replacement parts list. It is essential that these critical

parts should be replaced with the manufacturer’s
specified parts to prevent electric shock, fire or other
hazard.

• Do not modify original design without obtaining written
permission from IBM Inc. or you will void the original
parts and labor guarantee.

TAKE CARE DURING HANDLING THE LCD MODULE
WITH BACKLIGHT UNIT.

• Must mount the module using mounting holes arranged
in four corners.

• Do not press on the panel, edge of the frame strongly
or electric shock as this will result in damage to the
screen.

• Do not scratch or press on the panel with any sharp
objects, such as pencil or pen as this may result in
damage to the panel.

• Protect the module from the ESD as it may damage the
electronic circuit (C-MOS).

• Make certain that treatment person’s body are
grounded through wrist band.

• Do not leave the module in high temperature and in
areas of high humidity for a long time.

• The module not be exposed to the direct sunlight.

• Avoid contact with water as it may a short circuit within

the module.

• If the surface of panel become dirty, please wipe it off
with a softmaterial. (Cleaning with a dirty or rough cloth
may damage the panel.)

WARNING

BE CAREFUL ELECTRIC SHOCK !

• If you want to replace with the new backlight (CCFL) or
inverter circuit, must disconnect the AC adapter
because high voltage appears at inverter circuit about
650Vrms.

• Handle with care wires or connectors of the inverter
circuit. If the wires are pressed cause short and may
burn or take fire.

PRECAUTION

CAUTION

Please use only a plastic screwdriver to protect yourself
from shock hazard during service operation.

TIMING CHART

- 6 -

H / V

H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)

Sync

Polarity

+

–
–

+

–
–
–
–
–
–

+
+
+
+
+
+
+
+

–
–
–
–
–
–

+
+

Dot

Clock

25.175

28.322

25.175

30.24

31.5

36.0

40.0

50.0

49.5

57.2832

65

75

78.75

Frequency

31.468 KHz

70.0 Hz

31.468 KHz

70.0 Hz

31.469 KHz

60.0 Hz

35.00 KHz

66.67 Hz

37.50 KHz

75.0 Hz

35.156 KHz

56.25 Hz

37.879 KHz

60.3 Hz

48.077 KHz

72.188 Hz

46.875 KHz

75.0 Hz

49.725 KHz

74.55 Hz

48.363 KHz

60.0 Hz

56.476 KHz

70.0 Hz

60.023 KHz

75.0 Hz

Resolution

640 x 350

720 x 400

(TEXT)

640 x 480

640 x 480

640 x 480

800 x 600

800 x 600

800 x 600

800 x 600

832 x 624

(MAC)

1024 x 768

1024 x 768

1024 x 768

Total

Period

( E )

800
449
900
449
800
525
864
525
840
500

1024

625

1056

628

1040

666

1056

625

1152

667

1344

806

1328

806

1312

800

Video

Active

Time ( A )

640
350
720
400
640
480
640
480
640
480
800
600
800
600
800
600
800
600
832
624

1024

768

1024

768

1204

768

Blanking

Time

( B )

160

99

180

49

160

45

224

45

200

20

224

25

256

28

240

66

256

25

320

43

320

38

304

38

288

32

Sync

Duration

( D )

96

2

108

2

96

2

64

3

64

3

72

2

128

4

120

6

80

3

64

3

136

6

136

6

96

3

Back

Porch

( F )

48
60
55
34
48
33
96
39

120

16

128

22
88
23
64
23

160

21

224

39

160

29

144

29

176

28

Front

Porch

( C )

16
37
17
13
16
10
64

3

16

1

24

1

40

1
56
37
16

1
32

1
24

3
24

3
16

1

MODE

1

2

3

4

5

6

7

8

9

10

11

12

13

VIDEO

SYNC

C

B

D

F

A

E

OPERATING INSTRUCTIONS

- 7 -

FRONT VIEW REAR VIEW

Front Control Panel

1. Power Indicator

This indicator lights up green when the monitor
operates normally; In DPMS(Energy Saving) mode,

-stand-by, suspend, or power off mode - its color
changes to orange.

2. Power ON/OFF Button

Switches the monitors on and off.

3. ENTER Button

1) Displays main OSD menu.

2) Enters highlighted menus and submenus.

3) Selects highlighted option.

4. Arrow Key

Moves the cursor to highlight icons or make
adjustments.

1) Brings up Contrast control OSD.

2) Left and Right arrows pressed together bring up
auto setup.

5. Exit Button

1) Exits from menus, sub menus.

2) Exits from OSD.

3

2

1

4

5

Front Control Panel

DVI Port

DSub signal

Adapter Jack

WIRING DIAGRAM

- 8 -

P704

P703

J1

Inverter Cable :

6631T11012L

Module link Cable :

6631T11012M

Back Cover

- 9 -

DISASSEMBLY

(a)

(b)

(a)

(c)

1. TILT SWIVEL REMOVAL

(1) Remove the Cover Hinge.
(2) Remove two screws (a).
(3) Remove the Cover Piece Back.
(4) Remove two connectors (c).
(5) Remove the Module Link Cable connector.
(6) Remove the screw (b).
(7) Remove the Tilt Swivel.

2. BACK COVER REMOVAL

(1) Remove four Screw Covers (a).
(2) Remove four screws (b).
(3) Remove the Back Cover Ass’y.

(b)

(b)

(a)

(a)

(a)

(a)

(b)

(b)

3. CABINET ASS’Y REMOVAL

(1) Remove four Screws (a).
(2) Remove the Control PCB connerctor.
(3) Remove the Cabinet Ass’y.

(a)

(a)

(a)

(a)

Cover Hinge

Cover Piece Back

Module Link Cabel

Cabinet

Control PCB Connector

- 10 -

(a)

(b)

(c) (c)

(d)

(d)

(d)

(e)

(e)

(d)

(d)

6. TILT SWIVEL ASS’Y REMOVAL

(1) Remove the Cover Hnge (a).
(3) Remove the Cover Stand Body. (Change the Cable)
(2) Remove the Cover Stand Rear(b).
(4) Remove two screws(c).
(5) Remove the Cover Stand Top.
(6) Remove five screws (d) and Metal Shield Main.
(7) Remove two screwS (e).

4. LCD MODULE REMOVAL

(1) Remove Inverter Connector.
(2) Remove eight Screws (a).
(3) Remove the Metal Frame from the LCD MODULE.

(a)

(a)

(a)
(a)

(a)

(a)

(a)

(a)

Inverter Connector

5. INVERTER ASS’Y REMOVAL

(1) Disconnector the CN3, CN4.
(2) Remove the Inverter Ass’y.

Inverter Ass’y

Cover Stand Top

Cover Hinge

Remove the Cover Stand Body

Cover Stand Body

Metal Shield Main

LCD Module

- 11 -

BLOCK DIAGRAM