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Nokia Display Products Oy
P.O.Box 14
FIN---24101 Salo, Finland

Chassis 446F

19” High Resolution Colour Monitor
446PRO
Contents
Service
Monitor Dismantling
Part List
PCB Part List
PCB Layout pictures

Level

1

Main Board module . . . . . . SMA241E
CRT module . . . . . . . . . . . . . SMY052

1
SMA241H
SMY052

When re--- ordering manuals, please quote the model name and part number.

ZB1680A
02.00

446F

Service
Contents

1. Product Overview
1.1. Technical Specifications
1.2. Certifications
1.2.1. Safety
1.2.2. EMC
1.2.3. X---ray, emissions, environmental, ergonomics
1.3. Preset Display Modes
1.4. S--Capacitor Table
1.5. Monitor Connection
1.6. User Controls
1.7. Menu
2. Site Preparation
2.1. Location
2.2. Troubleshooting
2.3. Checking the Operation of Power Saver
3. Controlling the Memory for Picture Adjustments
3.1. Memory for User Adjustments
3.1.1. Adjustment
3.1.2. Resetting the User Memory
3.2. Memory for Factory Adjustments
3.2.1. Adjustment
4. Service Mode
4.1. Grouping of the Adjustments
4.2. Service Menu
4.2.1. Access to the Service Mode
4.2.2. Geometry
4.2.3. Grey Scale
4.2.4. Memory settings and Initializing the Replacement IC (IC204 on SMA)
4.2.5. Storing Adjustments
4.2.6. Exit from Service Menu
5. Workshop Maintenance
5.1. Important Safety Notice
5.2. ESD--Sensitive Parts
5.3. Test Equipment
5.4. Test Patterns
5.5. Disassembly
6. Image performance
6.1. Image stabilising time
6.2. Colour temperature and tracking
6.3. White uniformity
6.4. Colour purity
6.5. Luminance
6.6. Image size
6.7. Linearity
6.8. Geometrical distortion
6.9. Jitter
7. Adjustment Procedure
7.1. Adjustment Flow Diagram
7.2. Preliminary Preparations
7.2.1. High Voltage
7.2.2. Coarse Width
7.3. Geometry
7.4. Grey Scale
7.4.1. The Most Dominant Colour
7.4.2. Low Light
7.4.3. High Light
7.5. Maximum/Minimum Contrast
7.6. Focus
7.7. Convergence
7.7.1. Measuring Conditions
7.7.2. Convergence Measuring Gauge
446F

1

7.7.3. Static Convergence
7.7.4. Dynamic Convergence
7.7.5. Allowed Error Levels for Convergence
7.8. Colour Purity
8. Screen and Faceplate Blemishes
8.1. Definitions of inspection conditions and terms
8.1.1. Standard observing condition
8.1.2. Zone division
8.1.3. Minimum distance beetween defects
8.1.4. Average diameter of defect
8.2. Face defect standard (black spot, stain)
8.3. Glass blemish
8.3.1. Scratch
8.3.2. Bubbles/foreign materials

Revision History
Rev

Date

09.99

24.09.99

02.00

14.02.00

2

Prepared by

Comments

J. Paukku

SMA241H added

446F

1. Product Overview
446F is a 19 inch monitor. The maximum resolution of 1600 x 1200 makes the monitor suitable for
PC, Macintosh and workstation applications in normally heated, ventialed and controlled office/home
environment. The monitor has an own power supply with nominal input voltage requirements from
90 V to 264 V.

1.1. Technical Specifications
Cathode Ray Tube . . . . . . . . . . 19” in diagonal 86˚ deflection angle
Antistatic, antireflex
Phosohor P22 medium short, Dot pitch 0.24 mm
Picture Size . . . . . . . . . . . . . . . . 354 mm x 265 mm with specified geometric distortion
Maximum Picture Size . . . . . . . 366 mm x 275 mm
Power Input Requirements . . . Voltage 90--264 V, 50/60 Hz
Current 1.8 A/100 V, 0.8 A/240 V
Power Dissipation . . . . . . . . . . . < 130 W Normal Operation
< 95 W Stand--by
< 8 W Suspend
< 3 W Power off
Memory Locations . . . . . . . . . . . 3 for factory preset display mode
18 for user adjusted display mode
Geometric Distortion . . . . . . . . . The distance between bezel and active screen edge shall not vary
more than 2 mm in both vertical and horizontal dimensions
Luminance . . . . . . . . . . . . . . . . . Min. 100 cd/m2 (Nits) at center, with full white field
Video Input . . . . . . . . . . . . . . . . . Input Signal: RGB, analog, max 0.7 V/ 75 τ
Horizontal addressability: 1600 dots maximum
Vertical addressability: 1200 dots maximum
Synchronization Range . . . . . . Horizontal: 30 kHz to 107 kHz automatic
Vertical: 50 Hz to 150 Hz automatic
Synchronization Signal . . . . . . . Separate TTL , positive/negative
Composite TTL , positive/negative
Max. Dot Frequency . . . . . . . . . 230 MHz
Temperature . . . . . . . . . . . . . . . . Operating: +10˚C to +35˚C
Packed: --30˚C to +60˚C
Humidity . . . . . . . . . . . . . . . . . . . Operating: 20% to 80 %
Packed: 5% to 90 %
Weight . . . . . . . . . . . . . . . . . . . . . 25.3 kg net
29.6 kg gross
Size, Tilt and Swivel
D

W

20
90

90
H

Dimensions
Monitor . . . . . . . . . . . . . . . . . . . . H
W
D
Package . . . . . . . . . . . . . . . . . . . H
W
D

........
........
........
........
........
........

5

471 mm
470 mm
464 mm
596 mm
600 mm
571 mm

446F

3

1.2. Certifications
The monitor has following agency approvals

1.2.1. Safety
FIMKO, DEMKO
NEMKO, SEMKO
UL / USA
CSA / Canada
TÜV ---GS / Germany
IAA / Korea
PSB / Singapore
CCIB / China

1.2.2. EMC
FCC---D.O.C.
VCCI / Japan
CE / Europe
RRL EMI / Korea
BSMI / Taiwan

1.2.3. X ---ray, emissions, environmental, ergonomics
TÜV ---ERGO / Germany
DHHS / USA
TCO 99 / Sweden
Blue Angel / Germany

4

446F

1.3. Preset Display Modes
Full
intensity

Right Border

Left Border

0.7 V

Video
Blanking

0V

H Blanking
H Front Porch
H Sync

H Sync.
Signal

Full
intensity

H Active Video
H Back porch

Bottom Border

Upper Border

0.7 V

Video
Blanking

0V

V Blanking
V Front Porch

V Sync.
Signal

V Active Video
V Back Porch

V Sync

Display Mode no

00

01

02

03

04

05

06

07

08

NCE

GTF642

NCE642

NCE791

NCE513

NCE501

NCE506

NCE401

NCE406

NCE40A

V Frequency/Hz

85.0

85.0

85.0

85.0

60.0

75.0

60.3

75.0

85.06

H Frequency/kHz

91.376

91.146

106.25

68.677

48.363

60.023

37.879

46.875

53.674

H Period/us

10.944

10.971

9.41

14.561

20.677

16.660

26.400

21.333

18.631

Active Video/us

8.032

8.127

6.97

10.836

15.754

13.003

20.000

16.162

14.222

H Resolution

1200

1280

1600

1024

1024

1024

800

800

800

H Sync/us

0.803

1.016

0.83

1.02

2.092

1.219

3.200

1.616

H Back Porch/us

1.456

1.422

1.32

2.20

2.6462

2.235

2.200

3.232

V Period/lines

1075

1072

1250

808

806

800

628

625

631

V Resolution

1024

1024

1200

768

768

768

600

600

600

V Sync/lines

3

3

3

3

6

3

4

3

3

V Back Porch/lines

47

44

46

36

29

28

23

21

27

H Sync Polarity

---

+

+

+

---

+

+

+

+

V Sync Polarity

+

+

+

+

---

+

+

+

+

H Front Porch/us

0.65

0.41

0.27

0.51

0.37

0.20

1.00

0.32

V Front Porch/lines

1

1

1

1

3

1

1

1

Dot Frequency/MHz

159.360

157.500

229.490

94.500

65.000

78.750

40.000

49.500

56.250

Interlacing

no

no

no

no

no

no

no

no

no

446F

1.14
2.70

0.57
1

5

Full
intensity

Right Border

Left Border

0.7 V

Video
Blanking

0V

H Blanking

H Active Video
H Back porch

H Front Porch
H Sync

H Sync.
Signal

Full
intensity

Bottom Border

Upper Border

0.7 V

Video
Blanking

0V

V Blanking

V Active Video
V Back Porch

V Front Porch

V Sync.
Signal

V Sync

Display Mode no

09

10

11

12

13

14

15

16

17

18

NCE

NCE300

NCE306

NCE30A

NCE200D

NCE012

NCE011

NCE603

NCE605

NCE700

NCE70X

V Frequency/Hz

59.9

75.0

85.0

70.1

75.0

75.1

60.0

75.0

60.0

75.0

H Frequency/kHz

31.472

37.500

43.269

31.467

67.500

68.681

63.981

79.976

74.995

93.755

H Period/us

31.774

26.667

23.111

31.780

14.815

14.560

15.630

12.504

13.334

10.666

Active Video/us

25.420

20.317

17.778

25.423

10.667

11.520

11.852

9.481

9.877

7.901

H Resolution

640

640

640

1440

1152

1152

1280

1286

1600

1600

H Sync/us

3.81

2.032

1.56

3.814

1.185

1.280

1.037

1.06

1.185

0.948

H Back Porch/us

1.91

3.810

2.22

1.907

2.370

1.440

2.296

1.84

1.883

1.501

V Period/lines

525

500

509

449

900

915

1066

1066

1250

1250

V Resolution

480

480

480

400

864

870

1024

1024

1200

1200

V Sync/lines

2

3

3

2

3

3

3

3

3

3

V Back Porch/lines

33

16

25

34

32

39

38

38

46

46

H Sync Polarity

---

---

---

---

+

---

+

+

+

+

V Sync Polarity

---

---

---

+

+

---

+

+

+

+

H Front Porch/us

0.64

0.51

1.56

0.64

0.59

0.32

0.44

0.12

0.39

0.32

V Front Porch/lines

10

1

1

13

1

3

1

1

1

1

Dot Frequency/MHz

25.177

31.500

36.000

56.640

108.000

100.000

108.000

135.640

161.990

202.510

Interlacing

no

no

no

no

no

no

no

no

no

no

6

446F

1.4. S--Capacitor table
f/kHz

S5

S4

S3

S2

S1

S0

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

27.6
28.4
29.2
30.4
30.8
31.8
x

32.8
x

x

33.7
x

x

x

x

x

x

x

x

34.7
x

x

x

x

x

36.0
37.2
x

x

x

x

38.3
x

39.4
x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

40.4
41.4
42.7
44.2
x

x

x

x

45.8
x

47.7
x

x

x

49.4
x

x

51.6
x

x

x

x

x

x

x

x

x

x

x

x

53.5
54.6
55.8
57.3
x

x

x

x

x

x

x

x

x

x

59.0
60.5
62.2
65.3

446F

7

65.3
x
68.8
x

x

x

71.3
x

x

x

x

x

x

74.1
78.2
82.8
x

x

87.4
x
94.0
x
100.0
108.0

8

446F

1.5. Monitor Connection
Make sure that the monitor is disconnected from mains and the power switches of
the computer and all attached devices are turned off before connecting the monitor.
----

Connect the signal cable plug to the videocontroller connector at the back of the computer.
Tighten the screws on the plug by hand.
Connect the power cord first to the monitor and then to a grounded power outlet.

If your computer is DDC compatible (PC)
Do not use any adapter when connecting signal cable to your computer.
Do not extend the signal cable with extension lead. The DDC signals will not accept extended
cable.
--- Display controller must be compatible for External +5 V

---

Signal connector
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Signal
RV
Red video
GV
Green video
BV
Blue video
N.C
Plugged / unplugged test
RG
Red ground
GG
Green ground
BG
Blue ground
DDC +5V (optional)
LG
Logic Gnd
ID0
ID0 (tied to LG)
DDC SDA
Hs
Horizontal synchronization, composite sync
Vs
Vertical synchronization
DDC SCL

-->
-->
-->
<--

-->
<-<--->
-->
<--

1

6 11

5

10 15

446F

9

1.6. User Controls

4

3

21

1. Power switch
2. Power on indicator
3. Menu button
4. Select and adjustment buttons
When the power is turned on, the power--on indicator will light.
The colour of the the power--on light indicates the operating state of the monitor.
-

Green: The monitor is in Normal, Stand---by or Suspend operation.
Blinking Green: The monitor is in Automatic Power off state.
Not illuminated: The monitor is turned off with power switch or disconnected from mains outlet.

The power switch does not disconnect the monitor from mains. In oder to make the monitor completely powerless, unplug the power cord from power outlet.

10

446F

1.7.Menu
1.7.1. Moving in the menu
Menu operations are controlled with
button and ---/+ buttons.
a Call the menu to the screen by pushing
button.
b Select the header with ---/+ buttons.
c Push
to confirm the selection.
Adjustment and settings corresponding the header appear below the header field.
d Select the adjustment with ---/+ buttons.
e Push
to confirm the selection.
Menu disappears and a scale shows the position of the adjsutment. In addition to the bar, position
of the adjustment is shown as a percenage of the maximum value. The upper number shows the
current value and the lower one shows the value where the adjustent started.
f Adjust with ---/+ buttons.
g When ready, push
button.

1.7.2. Exit Menu
Select EXIT MENU and pushing

button.or push + and --- buttons together

446F

11

--- +

HORIZONTAL CENTERING

a

53%
50%

PREVIOUS VALUE:
ADJUST: --- /+

b
NAVI

c

d
NAVI

NOKIA 446PRO
SIZE & POSITION
SHAPE...
SHARPNESS
COLOR...
MISCELLANEOUS
EXIT MENU
AUTO SHAPE
HORIZONTAL CENTERING
WIDTH
VERTICAL CENTERING
HEIGHT
MOVE --- / +
NOKIA 446RO
SIZE & POSITION
SHAPE
SHARPNESS
COLOR...
MISCELLANEOUS
EXIT MENU
DEFAULT SHAPE
TILT
ORTHOGONALITY
TRAPEZOID
PINCUSHION
PINCUSHION BALANCE
MOVE --- / +

75Hz

NOKIA 446PRO
SIZE & POSITION
SHAPE
SHARPNESS
COLOR...
MISCELLANEOUS
EXIT MENU
CONTRAST
BRIGHTNESS
DEFAULT COLOR
COLOR PRESETS
RED
GREEN
BLUE
SAVE CURRENT COLOR
MOVE --- / +
NOKIA 446PRO
SIZE & POSITION
SHAPE...
COLOR...
MISCELLANEOUS
EXIT MENU
MONITOR DEFAULTS
DEMAGNETIZE
ABOUT MONITOR
MENU OPTIONS
MOVE --- / +

44%
50%

PREVIOUS VALUE:
ADJUST: --- /+

OK:

VERTICAL CENTERING
45%
50%

PREVIOUS VALUE:
ADJUST: --- /+

OK:

HEIGHT
30%
40%

PREVIOUS VALUE:
ADJUST: --- /+

SELECT:

OK:

f

75Hz

e

TILT
30%
40%

PREVIOUS VALUE:
ADJUST: --- /+

OK:

g
ORTHOGONALITY
PREVIOUS VALUE:

SELECT:

30%
40%

ADJUST: --- /+

NOKIA 446RO
75Hz
SIZE & POSITION
SHAPE
SHARPNESS
COLOR...
MISCELLANEOUS
EXIT MENU
DEFAULSHARPNESS
VERTICAL CONVERGENCE
HORIZONTAL CONVERGENCE
MOIRE
MOVE --- / +
SELECT:

12

OK:

WIDTH

OK:

TRAPEDOIZ
PREVIOUS VALUE:

30%
40%

ADJUST: --- /+

OK:

PINCUSHION
PREVIOUS VALUE:

30%
40%

ADJUST: --- /+

OK:

PINCUSHION BALANCE
PREVIOUS VALUE:

30%
40%

ADJUST: --- /+

75Hz

OK:

MOIRE
PREVIOUS VALUE:

30%
40%

ADJUST: --- /+

OK:

9300 K

SELECT:
75Hz
6500K, 7000K, 8000K, 9300K, 10000K, 1, 2
MENU OPTIONS
LANGUAGE/SPRACHE/LANGUE
HORIZONTAL POSITION
VERTICAL POSITION
DISAPPEARANCE TIME
1:00
BACK

SELECT:

446F

ADJUST: --- /+

OK:

LANGUAGE/SPRACHE/LANGUE
ENGLISH
DEUTSCH
SVENSKA
SUOMI
ITALIANO
FRANCAIS
ESPANOL
CANCEL
ADJUST: --- /+

OK:

2. Site Preparation
2.1. Location
This Monitor is designed for normal office conditions. It is equipped with own power supply. It is not
to be serviced or repaired on site

2.2. Troubleshooting
Local service facilities should perform simple maintenance such as trimming. More advanced maintenance and repair that requires replacement of components which in turn requires testing and retrimming should be carried out in a central workshop.
Symptom
Picture
screen is
blank

Measures
The indicator on
the front
panel is
not illuminated

Check that the power cord is correctly connected to the monitor and to the power
outlet. If the monitor is powered through the computer, check that the computer is
switched on with the mains switch. Use a desk light, for example, to verify that
current is connected to a power outlet. If no electricity is connected to the outlet,
call an electrician.

The indicator on
th ffrontt
the
panel is illuminated

Check that the signal cable connector is connected. If the connector is loose
tighten the connector’s screws.

Unplug the monitor from power outlet for about one minute.

The Monitor might be in stand--by position. Push one of the buttons or move the
mouse.
Unplug the monitor from outlet for about one minute
minute.
Switch off the monitor and the computer. Remove the signal cable from the
computer. Switch on the monitor using the power switch. If the Selftest error menu
appears on the screen, it is evident that the monitor functions correctly and
the problem is caused by an error in other parts of the system.
Check the signal cable’s connection pins. If the pins are slightly distorted,
use nose pliers to straighten them.
The computer may use a timing values which are
nization range.

out of the monitor’s synchro-

Picture has colour def t
fects

Demagnetize the monitor.

Picture has strong colour
defect,

Switch off the monitor and the computer. Remove the signal cable from the
computer. Switch on the monitor using the power switch.Check the colour of the
Red, Green and Blue bars. If they have pure colours, the fault is not in the monitor.
Check signal cable connectors and the computer. If the menu itself and the colour
bars are discoloured, the monitor is obviously damaged.

Picture is stable but distorted

Your computer may use a timing for which the corresponding picture characteris-tic adjustments have not been set at the factory. Adjust the picture characteristics

Picture is unstable

Check the proximity of other electrical devices that generate magnetic fields,
such as speakers,
other
electric
and
suc
spea e s, ot
e monitors,
o to s, e
ect c fans
a sa
d fluorescent
uo esce t light
g t fixtures.
tu es
Make sure your computer and video card are properly configured for your
monitor.

If colour defect is repeated without the monitor having been moved, it is possible
that the monitor is influenced by a strong magnetic interference field (near to
a high power cable, for example). Try to find a better location for the monitor or
the interference source. Note that another monitor placed too near (less than
30 cm.) may also generate interference in the picture.

The automatical appearance of the Error menu on the screen means that the signal is faulty or missing.
ERROR
Red
Green
Blue

ERROR
Red
Green
Blue

Signal: No signal

Signal: No signal

Cable not connected

Cable connected OK

446F

13

2.3. Checking the Operation of PowerSaver
The proper operation of the function requires a computer with VESA DPMS power management
capabilities. Note that the power saving feature must be activated in the computer when checking
the operation.
State

Colour of the power--on indicator

5V

Heater

12V

Video

Normal Operation

Green

Yes

Yes

Yes

Yes

Stand--by

Green

Yes

Yes

Yes

No

Suspend

Red

Yes

Yes

No

No

Power Off

Red

Yes

No

No

No

DPMS (Display Power Management Signaling) is a trade mark of Video Electronics Standard
Association (VESA)

14

446F

3. Controlling the Memory for Picture Adjustments
The picture adjustment values are stored in non-volatile memory. The memory has separated areas
for User Adjustments and for Factory Adjustments.

3.1. Memory for User Adjustments
3.1.1. Adjustment
1
2

If there are values available in the memory for user adjustments, corresponding to the present
timing signals, they are always used.
New user made adjustments are stored to the memory for user adjustments.

3.1.2. Resetting the User made settings for geometry or image
User memory can be emptied from user made settings. Resetting affects only the timing
which is currently active. The reset function is inhibited if no corresponding factory preset display mode exists.
After resetting all picture properties are coming from memory for factory adjustments.
3

3.2. Memory for Factory Adjustments
3.2.1. Adjustment

--

Factory adjustments can be updated with service menu in service mode. If there is no location in
factory adjustment memory for display mode currently in use, the adjustment affects the memory
for user adjustments.
If the memory location mentioned in case 1 is empty, the picture adjustment values are read
from memory for factory adjustments. Factory adjustments, corresponding to the current display
mode, are transferred to user memory if any picture property is adjusted. After that the operation
is as in case 1.
The memory can be
updated with Service
menu in Service Mode
Refer to the chapter
”Service Mode”

4

3
Storing

Memory for
Factory
Adjustments
SMA IC204

Initialization

Basic
Adjustments

4

Preset Recall

4

The memory can be
updated with User Menu
in User Mode

2
Memory for
User
Adjustments
SMA IC204

1

446F

15

4. Service Mode
Service Mode is needed for updating of the factory adjustments for display mode listed in the chapter Preset Display Modes. If there is no location in factory adjustment memory for display mode currently in use, the adjustment affects the memory for user adjustments.

4.1. Grouping of the adjustments
There are three groups of software adjustments in service mode:
-- Geometry set
-- Grey scale adjustment set
The following table shows how the adjustments act in relation to the display modes.

Adjustment

Common for
all Display
modes

Separate for
each Display
mode

Available in
User Mode

Available in
Service Mode

Horizontal centering

X

X

X

Vertical centering

X

X

X

Height

X

X

X

Width

X

X

X

Pincushion

X

X

X

Pincushion balance

X

X

X

Trapezoid

X

X

X

Orthogonality

X

X

X

S--correction

X

X

C--correction

X

X

E/W corner

X

X

Tilt

X

X

X

Moire

X

X

X

Raster

X

X

G2

X

X

Min contrast

X

X

Max contrast

X

X

R Black level

X

X

G Black level

X

X

B Black level

X

R Ampl

X

X

X

G Ampl

X

X

X

B Ampl

X

X

X

BCL adjust

X

Vertical conv

X

X

X

Horizontal conv

X

X

X

X

X

Init burn in test *

X

Common adjustments need to be adjusted only once. Separate adjustment must be performed for
every display mode to be stored
* Init burn in test only for manufacturing purposes

16

446F

4.2. Service Menu
4.2.1. Access to Service Mode
Activate 9300K color temperature before you go to the service menu.
Activate the service mode always in 91.376 kHz/85 Hz (GTF642).
First switch OFF the monitor with power switch.
1) Push
button down.
button down, switch ON the monitor.
2) While keeping
button when the power-- on indicator is illuminated.
3) Release
button.
4) Press
5) Monitor ask password. Type the password (7711) with the ---/+ buttons.
button.
6) Press
Select the items in the Menu with the --- or + buttons. Push the
button to open Geometry, Grey
Scale, Product Information or Memory Settings. Adjust each property with the --- or + buttons.

4.2.2. Sharpness
Geometry submenu contains placement, size and shape adjustments.
GEOMETRY . . .
GREY SCALE . . .
SHARPNESS
PRODUCT INFORMATION . . .
MEMORY SETTINGS . . .
RASTER
WIDTH
HORIZONTAL CENTERING
HEIGHT
VERTICAL CENTERING
PINCUSHION
PINCUSHION BALANCE
TRAPEZOID
ORTHOGONALITY
S CORRECTION
C CORRECTION
E/W CORNER
TILT
EXIT
00: 1280x1024 85HZ

4.2.3. Grey Scale
This monitor has six preset tints. With tint numbers smaller than 3 the picture becomes reddish and
with tint numbers greater than 3 the picture turns blue.
Tint no

1

2

3

4

5

6

7

Colour Temperature

5000K

6000K

6500K

7000K

8000K

9300K

10000K

The grey scale adjustment affects directly tint number 6 (9300K) only. Other tints are derived automatically from 9300K colour temperature.

446F

17

GEOMETRY . . .
GREY SCALE . . .
SHARPNESS
PRODUCT INFORMATION . . .
MEMORY SETTINGS . . .
CONTRAST
MIN CONTRAST
MAX CONTRAST
BRIGHTNESS
G2
RED BLACK LEVEL
GREEN BLACK LEVEL
BLUE BLACK LEVEL
RED AMP.
GREEN AMP.
BLUE AMP.
BCL ADJUST
EXIT
00: 1280x1024 85HZ

GEOMETRY . . .
GREY SCALE . . .
SHARPNESS
PRODUCT INFORMATION . . .
MEMORY SETTINGS . . .
VERTICAL CONV
HORIZONTAL CONV
MOIRE
EXIT
00: 1280x1024 85HZ

GEOMETRY . . .
GREY SCALE . . .
SHARPNESS
PRODUCT INFORMATION . . .
MEMORY SETTINGS . . .
MODEL:
HP P1110
SERIAL NUMBER FI92500061
POWER ON HOURS
23
STAND--- BY HOURS
0
SUSPEND HOURS
0
ACTIVE--- OFF HOURS
0
FIRMWARE
0.19
EXIT
00: 1280x1024 85HZ

GEOMETRY . . .
GREY SCALE . . .
SHARPNESS
PRODUCT INFORMATION . . .
MEMORY SETTINGS . . .
TYPE :
O
CUSTOM COLOR: 1
DDC :
EXT (24LC21)
INITIALIZE EEPROM
INIT BURN IN TEST
EXIT
00: 1280x1024 85HZ

4.2.4. Memory settings and Initializing the Replacement IC204 on SMA board
If the memory for factory adjustments is replaced, it must be initialized. During initializing all memory
locations are written with approximate values. They must be updated in service mode as explained
in the chapter ’Adjustment Procedure’.
- INTIALIZE EEPROM always with using display mode no 00! (91.376 kHz/85 Hz (GTF642))
- After initializing switch OFF the monitor.
- Activate service mode as explained before.
- Select Memory settings ---menu.
- Select Monitor type O, custom color 1 and DDC (EXT (24LC21)
Caution
Initializing of a programmed memory IC deletes all user and factory made adjustments.

4.2.5. Storing the Adjustments
When the adjustment is ready, return to the menu by pushing the
stored automatically.

button. Adjustement will be

4.2.6. Exit from Service Mode
Switch off the monitor.

4.2.7. Uninstalled EEPROM
If you have uninstalled EEPROM. You can not adjust in user menu. You have to go first in service
menu and select Memory settings --- Initialize EEPROM.

18

446F

5. Workshop Maintenance
5.1. Important Safety Notice
The components, which are important for safety, are marked with special mark ! on the circuit diagram. It is essential that these critical parts should be replaced with manufacture’s specified parts to
prevent X--radiation, shock, fire or other hazards.
For your own safety, use always safety isolating transformer when repairing the monitor.

5.1.1. Discharging the CRT
High voltage circuitry includes bleeder resistor which normally discharges the tube in about 5 seconds after the power is switched off. If you -- for safety reasons -- want to be sure about the discharging, do as follows:
Wear safety goggles. A cracked CRT may implode when discharged.
The signal cable must be disconnected from the computer.
To discharge the CRT, a flat--head screwdriver with grounding cable is required.
-- Disconnect the signal cable.
-- Connect the metal chassis of the monitor to reliable earth.
-- Connect the grounding wire to the screwdriver.
-- Connect the other end of the grounding wire to the chassis (earth).
-- Insert the screwdriver under the rubber cap of the EHT connector to discharge the tube.

5.2. ESD--Sensitive Parts
To prevent damage, when working with electrostatic discharge (ESD) sensitive parts, observe the
following instructions:
-- Keep the ESD--sensitive part in its original shipping container until you are ready to install the
part into the component card.
-- Just before touching the ESD--sensitive part, discharge to the monitor any static electricity in
your body; do this by touching the metal frame or cover of the machine. If possible, keep one
hand on the frame when inserting or removing a logic card, for example.
-- Hold the ESD--sensitive part by its edge; do not touch its pins.

5.3. Test Equipment
The following test equipment are required to adjustment procedure.
-- Safety isolating transformer
-- Digital multimeter: Fluke 87 or equivalent true RMS multimeter
-- High voltage probe: e.g. Fluke 80--40k
-- Signal generator: VTG220 + PC or programmable video generator
-- Colour analyzer: e.g. Minolta TV Colour Analyzer CA100
-- Convergence Gauge (CM7AR or equivalent)
-- Oscilloscope 40--100 MHz band width
-- Hi--Pot tester (Flash tester with insulation measurement / Leakage current / Break down voltage)
-- ESD protection necessary

5.4. Test Patterns
1

2

3
Active
vertical
video time
Active horizontal video time

1

-2

-3

--4
5

4

5

Full White

pixelpixelpi
pixelpixelpi
pixelpixelpi
pixelpixelpi

A--- area
B--- area

Active
vertical
video time

Active horizontal video time

Black Picture
Signal level = 0 V at each RGB input
Highlight grey scale tracking
Signal level = 700 mV in the window at each RGB input
Crosshatch Picture
Squares e.g. 20 mm x 20 mm
Outmost lines correspond the active vertical/horizontal video time
Convergence test pattern
Focus test pattern
446F

19

5.5. Disassembly
5.5.1. Cabinet
Set the monitor on cushion picture tube facing down
1. Loosen and remove two screws.
2. Open the plastic pawls with a screwdriver or special tool (for instance 860006)

Screw

Push open

on both sides

20

Do not twist

446F

6. Image performance
Measurement to verify this specification shall be made with equipment that measures the displayed image as if it were projected forward onto a flat plane tangent to the center of the CRT
faceplate surface and perpendicular to the Z---axis of the CRT.
Image performance specifications are applicable over specified input power conditions, specified environmental operating conditions and after being subjected to the specified non---operating environmental conditions. Before performance measurements the monitor must have been in
room temperature (20+/ --- 5 degrees C) for at least 2 hours. After that the monitor must have
been warmed up with power on at least 60 minutes.
The monitor shall be positioned to a magnetic field, which is specified as 0 G horizontal field and
0.45 G vertical field (Northern Hemisphere) when ever the image performance is measured.
If there is no standardised magnetic field available, the monitor should be positioned face to
east.
All image performance specifications will be met in diffuse ambient 500 lux.
All the performance specifications are met when using factory adjusted timing modes within line
frequencies 48 kHz --- 107 kHz.
The timings below 48 kHz line frequency are usable, but not specified.
Performance is optimised for 1280 x 1024, 85 Hz (VESA) resolution.

6.1. Image stabilising time
The image shall begin to be visible in a 500 lux environment within 15 seconds of application of
power and input signals.
The image shall be stabilised within 30 seconds of application of power and input signals. ”Stabilised” means that no significant changes shall occur in the image quality specifications, such
as image brightness, size, linearity and so on.
The image shall reach performance stability within 20 minutes of the application of power and
input signals. ”Performance Stability” means that the display monitor shall meet all of its image
quality specifications.

6.2. Colour temperature and tracking
The default colour temperature is 9300 ˚K
Measurement conditions:
--- test pattern 50*50 mm white field at the screen centre
--- brightness control adjusted for a background raster luminance level of 1 nit
--- input signals R, G, B with maximum amplitude
When contrast ---control is adjusted for 100 nit’s luminance level, the factory adjusted colour
coordinates measured at the screen centre will be:
x = 0.283 +/ --- 0.015 = x ref
y = 0.297 +/ --- 0.015 = y ref
When contrast ---control is adjusted from a luminance level of 100 cd/m2 to
35 cd/m2 or its adjust stop, the colour coordinates measured at the screen centre will be:
x = x ref +/ --- 0.015
y = y ref +/ --- 0.015

446F

21

6.3. White Uniformity
Measurement conditions:
--- Full screen picture size, Brightness in middle 100 nit
--- Magnetic field
horizontal 0
Gauss
vertical
0.45 Gauss
--- Warming up time 1 hour
Maximum variation between colour coordinates between any measurement points shall not vary
more than d(x),d(y) below.
Colour coordinates from corner to center:
d(x) = ± 0.015
d(y) = ± 0.015

6.4. Colour Purity
There should not be visual discoloration with each of the red, green and blue beams after the
tube is moved to any directions.
Measurement conditions: same as spec. 8.3

6.5. Luminance
--- Definition:
The following methodology and definition of luminance shall be applicable throughout
this specification.
Luminance shall be measured on 1280 x 1024 85 Hz pixel format at five areas, using two different pictures:
1. In the center of the screen white field 50*50 mm.
2. Full white field.
The five areas are defined as:
L0 Center of the screen
L1 Upper left of the screen
L2 Upper right of the screen
L3 Lower left of the screen
L4 Lower right of the screen

L1

L2
L0

L3

L4

--- Requirements
Maximum contrast luminance:
With the brightness control set so that background brightness is 1 nit and the contrast control
set to maximum.
L0 = 140 +/ --- 20 nits (41 Ft ---L) 50*50 mm white field
L0 = 110 +/ --- 10 nits (32 Ft ---L) Full white field
Minimum luminance
Using full white picture, with the brightness and contrast controls in minimum, the foreground
full white field (L0) < 5 nits.
Background luminance:
The luminance of the background, measured at center of the screen without active video and in
the absence of significant ambient illumination, brightness at maximum must be:
1 nit.=< L0 =< 7 nits
The background shall be extinguished before brightness control reaches its end.

22

446F

--- Luminance uniformity:
With the brightness control set so that the background raster is just extinguished the contrast
control set for L0 = 100 nits, ( 29 Ft ---L), luminance on areas L1, L2, L3 and L4 shall be greater
than (75 %) of L0.(75 nits)

6.6. Image size
Display size is defined as the width and height of the display using the active raster, not including the border.
Measurement:
Full white field brightness set to 100 nits (29 Ft ---L). Cross---hatch test pattern.
The width and the height are measured at the center of the screen.
Requirements:
Tolerance
Nominal size:
Width = 354 mm
Height = 265 mm

Adjusted mode
±4
±3

Pre load or GTF based timings :
± 6 mm
± 5 mm

Over the full range of operating temperature, the size shall not change more than one percent.

6.7. Linearity
Cross---hatch test pattern (16 x 12 cells). Brightness control set so that the background raster is
just extinguished and the contrast control is set to maximum.
The limits for vertical or horizontal non---linearities are 4 % for adjacent cells and 8 % for overall
linearity. The method of calculating linearity is: [ (max---min)/max ]*100 < 8 %
The measurements are done along the vertical and horizontal center lines of the screen.
Frequency range <48kHz non---linearities are 8% for adjacent cells and 12% for overall linearity.

6.8. Geometrical distortion
The distance between bezel and active screen edge shall not vary more than 1.5mm for adjusted mode and 4.0mm for the preloaded mode.

6.9. Jitter
Image motion in terms of dynamic pixel displacement shall be defined as jitter.
(MPR 1990:10, 1.07)
The horizontal and vertical displacement of any pixel using the ”convergence” dot and cross
hatch pattern measured using microscope with appropriate magnification.
The maximum displacements in both the horizontal and vertical directions must be less than 0.1
mm.

446F

23

7. Adjustment Procedure
The following procedure must be carried out in case of large service operations e.g. when a circuit
board or nonvolatile memory ICA has been replaced by a new one.
The order of adjustments explained here has been found to produce the desired result with the minimum of effort. Adjustments can also be made in another order or completely separately.

7.1. Adjustment Flow Diagram
START
6.4 Gray scale
Assemblies
or components
replaced

YES

Perform Preliminary preparations
See 6.2

The Most Dominant colour
See 7.4.1

NO
Low light
See 7.4.2

High light
See 7.4.3

Memory
replaced
NO
Reset user
memory for display
modes to be adjusted
See 3.1.2

YES
Maximum/Minimum contrast
See 7.5

4.2.4 Initializing
Switch OFF the monitor and
activate service mode

Focus
See 7.6

Select display mode 00
Initializing

6.7 Convergence

Switch OFF the monitor
Adjust the convergence in the middle of
the tube with static adjustments
See 7.7.3

6.3 Geometry

Activate service mode and perform 7.3
para 1), 2) & 3) with 91.376 kHz/85
(GTF642)

Adjust the convergence in the corners of
the tube with dynamic adjustments
See 7.7.4

Hz

The new settings are stored automatically.
(4.2.5)

Perform 6.3 para 4) and 5) for all display modes.

Exit from service mode
See 4.2.6

The new settings are stored automatically.
(4.2.5)

STOP

24

446F

7.2. Preliminary Preparations
Connect the signal cable to the PC. Switch on the monitor and the PC. Let the monitor warm up for
20 minutes before starting the adjustments.

7.2.1. High Voltage
----

Select 91.376 kHz/85 Hz (GTF642) crosshatch test pattern.
Connect the high voltage meter to the anode of the picture tube.
Adjust the high voltage to 27.0 ±0.2 kV with RT301 on SMA--board.

Front

RT301

446F

25

7.3. Geometry
Magnetic fields for following adjustments: vertical 0.45G and horizontal 0.0G.
Activate Service Mode in 91.376 kHz/85 Hz (GTF642).
Degaussing must be carried out before the picture adjustments. Degaussing shall be repeated if the
monitor is moved.

7) Repeat steps 4) and 5) for every display mode to be stored. Note that
the display mode can be changed without leaving the service mode.

=

=

GEOMETRY
GREY SCALE
SHARPNESS
PRODUCT INFORMATION
MEMORY SETTINGS
Raster
Width
Horizontal centering
Height
Vertical centering
Pincushion
Pincushion balance
Trapezoid
Orthogonality
S Correction
C Correction
E/W Corner
Tilt
00: 1280x1024 85HZ

26

446F

<1.5 mm

265 - /+ 3 mm

4) Adjust size, position and shape of the picture equal to the mask aperture. Adjust first the properties with largest deviation from the correct
value.
5) Adjust final width and height.
6) The distance between bezel and active screen edge shall not vary
more than 2.0 mm in vertical and horizontal direction.

=

=

<1.5mm

1) Select 91.376 kHz/85 Hz (GTF642) crosshatch test pattern.
to maximum and adjust until the background is faintly visible.
Set
Reduce width until both vertical edges of the background are visible.
2) Straighten the picture if tilted.
This adjustment is common for all display modes.
3) Centre the background.
This adjustment is common for all display modes.

<1.5mm
<1.5mm

354 - /+ 4 mm

7.4. Grey Scale

The grey scale is adjusted for 9300K colour temperature.
Activate Service Mode in 91.376 kHz/85 Hz (GTF642).

7.4.1. The Most Dominant Colour

The most dominant colour has been marked in a label on the deflection yoke.
It may not be correct if tube or SMH card has been changed. In that case judge
the most dominant colour from the tone of the picture after you have made the
following adjustments.
1) Select 91.376/85 (GTF642) black test pattern.
to minimum.
2) Set to maximum and
3) Set Blacklevel adjustment RED/GREEN/BLUE Black Level to (step 33)
4) Set RED/GREEN/BLUE Amp (step 33) menu and G2 menu adjustments to
center (step130).
5) Place the probe of the colour analyzer in the middle of the screen and
adjust with G2 trimmer until the picture illuminance is 3±1.0 cdm2 (Nits)

7.4.2. Low Light

1)
2)
3)
4)

FOCUS V
FOCUS H
G2

Select 91.376/85 (GTF642) black test pattern.
Adjust picture illuminance to 1.0 cdm--2 (Nits)with in servicemenu.
in servicemenu to the minimum.
Adjust the
Adjust the colour coordinates to (9300K)
x = 0.283±0.010
y = 0.297±0.010
with RED/GREEN/BLUE Black Level adjustments.
Do not adjust the most dominant colour.
During the adjustment check if brightness is chancing over tolerance, when
needed adjust it back. If Y--- and X---values are getting too far from ideal values, you have chosen wrong MOST DOMINANT COLOUR. Check the dominant colour again according to the instructions.
5) Set to the maximum and check that the illuminance is still 3±1.0 cdm2. If
not, adjust with G2 in service menu.
6) Adjust picture illuminance to 1.0 cdm2 (Nits)with in servicemenu and
check the colour coordinates.

Left side view
of the chassis

7.4.3. High Light

Select 91.376/85 (GTF642) black test pattern.
Adjust with the picture illuminance to 1±0.1 cdm2 (Nits).
Select 91.376/85 (GTF642) window test pattern.
the picture illuminance in the window to 100±5 cdm2 (Nits)
Adjust with
Adjust with RED/BLUE Amp the colour coordinates in the window to
x = 0.283±0.003
y = 0.297±0.003
Check after adjustment that the illuminance reading is in limits.
6) Back to low light step 4) and check colour coordinates.

1)
2)
3)
4)
5)

7.5. Maximum/Minimum Contrast

1) Set
to the maximum.
the picture illuminance outside window to 1.0 cdm--2 (Nits).
2) Adjust with
3) Adjust illuminance in the window to 140±5 cdm--2 (Nits) with
MAX CONTRAST.
to the minimum.
4) Set
5) Adjust the minimum illuminance in the window to 5 ± 1 cdm--2 (Nits)
with MIN CONTRAST.
6) Exit from service mode.

7.6. Focus

1)
2)
3)
4)
5)

Select 91.376/85 (GTF642) crosshatch test pattern
to the maximum and adjust to 70 % (background faintly visible).
Set
Adjust the sharpness with FOCUS H and FOCUS V to optimum
Adjust until the background is invisible
Select focus test pattern. Check that all letters are clearly visible.
446F

pixelpixelpi
pixelpixelpi
pixelpixelpi
pixelpixelpi

27

7.7. Convergence
Reduce first the convergence error in the middle of the screen to minimum using static adjustments.
After the convergence is faultless in the middle of the tube, use dynamic adjustments to eliminate
the error in the edges of the tube.
Static adjustments affects the whole picture area:
-- Magnet ring set on the tube neck (horizontal + vertical)
Dynamic adjustments affects a part of the picture area:
-- Deflection yoke trimmers.

7.7.1. Measuring Conditions
-----

Adjust convergence with 91.376/85 (GTF642) line frequency.
Make sure that focus is correctly set at the mid-point between the screen center and the edge of
the picture.
Use white crosshatch test pattern with circle.
Adjust
to near the maximum and reduce until the background disappears.

7.7.2. Convergence Measuring Gauge CM7AR
X
B

0.5

0

0.5

0.5

0

0.5

Blue

Y

Red
Green
0.5

0.5

0

0.5

A

0

Check that the adjusting knobs (A & B) are set to zero.
- Place the gauge on the line with marking Y up upwards when measuring horizontal line.
- Place the gauge on the line with marking X up upwards when measuring vertical line.
- If the line has convergence error, the line in the window seems to be broken.
- Use knobs A and B to adjust the line continuous.
- If the readings are on the opposite side of zero, the convergence error is A+B (e.g. 0.2 + 0.1
= 0.3).
- If the readings are on the same side of zero, the convergence error is equal to A if A > B or
B if B > A

7.7.3. Static Convergence

0.5

The use of the Klein CM7AR Convergence Gauge has been explained here but other types of
gauges can be used as well.

The magnet rings has been set to the optimum in the factory. Readjustment is necessary only in
case the adjusting magnets have been accidentally moved.
1 Adjust G vertically in the middle between R and B with 6 pole magnet rings.
2 Adjust G horizontally in the middle between R and B with 6 pole magnet rings.
3 Adjust R and B vertically to the same position with G line with 4 pole magnet rings.
4 Adjust R and B horizontally to the same position with G line with 4 pole magnet rings.
Lock the rings with paint.
Purity magnet rings.
Do not adjust !

3

4 pole magnet rings

B

1

6 pole magnet rings

G
R
4
2

SMH
Sliding two ring tobs toward
or away from each other

Rotating both rings together

1

28

3

2

446F

4

3

4

1

2

7.7.4. Dynamic Convergence
Deflection yoke trimmers

B R BR B R

B
R
RB
B
R

RGB RGB RGB

A--- area
B--- area

RB RB RB

R
B
RB
R
B

R B B RR B

RGB

RB
RB
RB

RGB

B R R BB R

R BR B RB

RB RB

RB

B R BR B R

R
B
R
B
R
B
B
R
B
R
B
R
R
B
R
B
R
B
B
R
B
R
B
R

RB
RB
RB

RB
RB
RB

BR

BR

RGB

RB

RGB

RB

See 7.7.3.
Purity magnet rings.
Do not adjust !

BR

446F

RB

RB

RB

29

7.7.5. Allowed Error Levels for Convergence
Area A ≤ 0.25 mm
Area B ≤ 0.35 mm

7.8. Colour Purity
Do not move purity magnet rings. If the purity magnet rings are found to have moved during transportation or handling, set them just in the original position by tracing the locking paint put on purity
magnet rings and holder of beam bender and then readjust the static convergence. Beamlanding
adjustment handle to purity.

30

446F

8. Screen and Faceplate Blemishes
8.1. Definitions of inspection conditions and terms
8.1.1. Standard observing condition
Distance: 30 cm from screen face. Angle 
45 from Z axis.
Cosmetic inspection without raster should be done under luminance: 500lx MIN.
Color and brightness

273.6 mm

8.1.2. Zone division

A

B

273.6 mm
other screen area
A Zone: 273.6 mm x 273.6 mm
B Zone: The balance of useful screen area
8.1.3. Minimum distance beetween defects

8.1.4. Average diameter of defect
Average diameter

=

Long diameter + Short diameter
2

8.2. Face defect standard (black spot, stain)
Average diameter

Quantity allowed

Minimum

of defects

A

B

Total

distance

less than 0.5

4

4

6

30

less than 0.3

no limit

---

446F

31

8.3. Glass blemish
8.3.1. Scratch
Width

Length of single scratch

W>0.05

No limit

0.05
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