Sony 19T2 Schematic
19T2
www.rtv-horvat-dj.hr
SERVICE MANUAL
SPECIFICATIONS
Dimensions and weight
CRT: 46 cm (19")
Visible diagonals: 46 cm
Dot pitch: 0.24 - 0.25 mm (slot mask)
Maximal resolution: 1600 x 1200 pixels
Preset display area: 352 mm x 264 mm
Dimensions (W x H x D): 449 mm x 463 mm x 463 mm
Weight: 26 kg
Accessories: Power cable (1.8 m)
Storable display modes: 25 (10 of which are preset)
Electrical data
Video: analog, positive, 0.7 Vpp, 75 Ohm
Synchronization: Separate Sync. TTL
Horizontal frequency: 30 kHz .... 107 kHz (multi-scanning)
Refresh rate: 48 Hz .... 120 Hz
Maximum pixel rate: 230 MHz
Power supply: 180 V -264 V, 50 Hz - 60 Hz
Power consumption:
(see power management):
Environmental conditions
Environment class 3K2, IEC 721
Rated range of operation: 15 °C .... 35 °C
Humidity: 20 % .... 85 %
Limit range of operation: 5 °C .... 40 °C
Humidity: 20 % .... 85 %
Condensation must be avoided.
Composite Sync. TTL/ Sync. on Green
< 1 A max. at 220 V
< 145 W (ON, Normal mode)
< 15 W (Standby mode)
< 15 W (Suspend mode)
< 3 W (OFF mode)
AEP Model
Chassis No. SCC-L30T-A
F99
3 Hz,
CHASSIS
COLOR MONITOR
19T2
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SAFETY CHECK-OUT
After correcting the original service problem, perform the following safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly-soldered connections. Check the entire board surface for solder
splashes and bridges.
2. Check the interboard wiring to ensure that no wires are
“pinched” or contact high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps,
and mounting hardware have been replaced. Be absolutely
certain that you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious
signs of deterioration. Point them out to the customer and
recommend their replacement.
6. Check the line cords for cracks and abrasion. Recommend
the replacement of any such line cord to the customer.
7. Check the B+ and HV to see if they are specified values.
Make sure your instruments are accurate; be suspicious of
your HV meter if sets always have low HV.
8. Check the antenna terminals, metal trim, “metallized”
knobs, screws, and all other exposed metal parts for AC
Leakage. Check leakage as described below.
To Exposed Metal
Parts on Set
0.15 µF
1.5 k
Ω
AC
Voltmeter
(0.75 V)
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers’ instructions to
use these instruments.
2. A battery-operated AC milliammeter. The Data Precision
245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate lowvoltage scale. The Simpson 250 and Sanwa SH-63Trd are
examples of a passive VOMs that are suitable. Nearly all
battery operated digital multimeters that have a 2 V AC
range are suitable. (See Fig. A)
WARNING!!
NEVER TURN ON THE POWER IN A CONDITION IN
WHICH THE DEGAUSS COIL HAS BEEN REMOVED.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
¡ ON THE SCHEMATIC DIAGRAMS, EXPLODED
VIEWS AND IN THE PARTS LIST ARE CRITICAL FOR
SAFE OPERATION. REPLACE THESE COMPONENTS
WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE CRITICAL FOR SAFE OPERATION
ARE IDENTIFIED IN THIS MANUAL. FOLLOW THESE
PROCEDURES WHENEVER CRITICAL COMPONENTS
ARE REPLACED OR IMPROPER OPERATION IS SUSPECTED.
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
– 2 –
POWER SAVING FUNCTION
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If your PC has a VESA DPMS (Video Electronics Standard Association, Display Power
Management Signaling) power management function (energy-saving mode), your monitor will fully
support this function. The monitor has a four-stage power management system.
Stage ON Standby mode Suspend mode OFF mode
Power indicator glows green flashes green/orange flashes green/orange glows orange
Function Monitor operating
Power
consumption
If your PC detects inactivity (no input) it sends an appropriate signal to the monitor to reduce the
power consumption. The power indicator of the monitor changes color to indicate the status change.
If there is still no input, power consumption is further reduced (OFF mode).
Once an input is made at the PC the screen contents are redrawn and full power is restored.
The length of the individual stages is determined by the power management system of the PC. For
detailed information on how energy-saving mode operates refer to the Operating Manual or
Technical Manual of your PC.
The service life of your monitor will be extended if the OFF mode is switched to after
30 minutes at the earliest (setting in screen saver, in your PC's BIOS setup or in the OSD
i
menu).
When the monitor is switched to OFF mode by the power management system a power
consumption of about 3 W is maintained to feed the circuit for redrawing the screen
contents.
To cut off power consumption totally, press the ON/OFF switch on the front of the monitor.
normally
normal
< 140 W
Monitor
is dark
reduced
to < 15 W
Monitor
is dark
reduced
to < 15 W
Monitor
is dark
reduced
to < 3 W
19T2
DIAGNOSIS
The monitor is equipped with a self-diagnosis function. If the monitor recognizes a fault, the screen
display remains dark and the power indicator glows green or flashes orange.
The power indicator glows green
Switch the connected PC off.
Press and hold down the button on the front of the monitor for 2 seconds.
If all four color bars (white, red, green, blue) are shown, the monitor is operating properly. In this
case, check the PC.
If the color bars do not appear, this may be due to a fault in the monitor. Please contact our
customer service center with a description of the problem.
The power indicator flashes orange
Switch the monitor off and on again.
If the power indicator continues to flash orange, there may be a fault in the monitor. Determine the
interval at which the indicator flashes (in seconds) and contact our customer service center with a
description of the problem.
– 3 –
19T2
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TIMING SPECIFICATION
MODE AT PRODUCTION
RESOLUTION
CLOCK
— HORIZONTAL —
H-FREQ
H. TOTAL
H. BLK
H. FP
H. SYNC
H. BP
H. ACTIV
— VERTICAL —
V. FREQ (Hz)
V. TOTAL
V. BLK
V. FP
V. SYNC
V. BP
V. ACTIV
— SYNC —
INT(G)
EXT (H/V) /POLARITY
EXT (CS) /POLARITY
INT/NON INT
MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6
720 X 400 640 X 480 640 X 480 800 X 600 800 X 600 1024 X 768
28.325 MHz 25.175 MHz 36.000 MHz 56.250 MHz 67.500 MHz 94.500 MHz
31.472 kHz 31.469 kHz 43.269 kHz 53.674 kHz 63.920 kHz 68.677 kHz
usec usec usec usec usec usec
31.774 31.778 23.111 18.631 15.644 14.561
6.355 6.356 5.333 4.409 3.793 3.725
0.635 0.636 1.556 0.569 0.474 0.508
3.813 3.813 1.556 1.138 0.948 1.016
1.906 1.907 2.222 2.702 2.370 2.201
25.419 25.422 17.778 14.222 11.852 10.836
70.094 Hz 59.940 Hz 85.0 Hz 85.061 Hz 100.032 Hz 84.997 Hz
lines lines lines lines lines lines
449 525 509 631 639 808
49 45 29 31 39 40
13 10 1 1 1 1
223333
34 33 25 27 35 36
400 480 480 600 600 768
NO NO NO NO NO NO
YES N/P YES N/N YES N/N YES P/P YES P/P YES P/P
NO NO NO NO NO NO
NON INT NON INT NON INT NON INT NON INT NON INT
MODE AT PRODUCTION
RESOLUTION
CLOCK
— HORIZONTAL —
H-FREQ
H. TOTAL
H. BLK
H. FP
H. SYNC
H. BP
H. ACTIV
— VERTICAL —
V. FREQ (Hz)
V. TOTAL
V. BLK
V. FP
V. SYNC
V. BP
V. ACTIV
— SYNC —
INT(G)
EXT (H/V) /POLARITY
EXT (CS) /POLARITY
INT/NON INT
MODE 7 MODE 8 MODE 9 MODE 10 MODE 11 MODE 12
1024 X 768 1152 X 864 1152 X 864 1280 X 1024 1280 X 1024 1600 X 1200
111.2 MHz 108.000 MHz 146.000 MHz 157.500 MHz 184.900 MHz 229.500 MHz
80.814 kHz 67.500 kHz 93.110 kHz 91.146 kHz 107.002 kHz 106.250 kHz
usec usec usec usec usec usec
12.374 14.815 10.740 10.971 9.346 9.412
3.165 4.148 2.849 2.844 2.423 2.440
0.288 0.593 0.219 0.406 0.173 0.279
1.151 1.185 1.096 1.016 0.692 0.837
1.727 2.370 1.534 1.422 1.558 1.325
9.209 10.667 7.890 8.127 6.923 6.972
99.894 Hz 75.0 Hz 100.1 Hz 85.024 Hz 99.91 Hz 85.000 Hz
lines lines lines lines lines lines
809 900 930 1072 1071 1250
41 36 66 48 47 50
21111 21
3333 33
36 32 52 44 42 46
768 864 864 1024 1024 1200
NO NO NO NO NO NO
YES N/N YES P/P YES N/N YES P/P YES P/P YES P/P
NO NO NO NO NO NO
NON INT NON INT NON INT NON INT NON INT NON INT
2000.2.18 VER.
– 4 –
TABLE OF CONTENTS
www.rtv-horvat-dj.hr
Section Title Page
1. GENERAL ................................................................. 1-1
2. DISASSEMBLY
2-1. Cabinet Removal ................................................ 2-1
2-2. Shield (EMI, Video),
Side Cover (L and R) Removal.......................... 2-1
2-3. A Board Removal ............................................... 2-2
2-4. Rear Shield Complete Assy,
D Board Removal ............................................... 2-2
2-5. Service Position .................................................. 2-3
2-6. H Board Removal ............................................... 2-3
2-7. Picture Tube Removal........................................ 2-4
2-8. Harness Location ................................................ 2-5
3. SAFETY RELATED ADJUSTMENT............. 3-1
19T2
4. ADJUSTMENTS ..................................................... 4-1
5. DIAGRAMS
5-1. Block Diagrams .................................................. 5-1
5-2. Frame Schematic Diagram ................................. 5-5
5-3. Circuit Boards Location ..................................... 5-6
5-4. Schematic Diagrams and Printed Wiring
Boards ................................................................. 5-7
(1) Schematic Diagram of A Board ......................... 5-9
(2) Schematic Diagrams of D (a,b,c) Board .... 5-11
(3) Schematic Diagrams of N, H Boards ................. 5-19
5-5. Semiconductors .................................................. 5-21
6. EXPLODED VIEWS
6-1. Chassis ................................................................ 6-1
6-2. Picture Tube........................................................ 6-2
6-3. Packing Materials ............................................... 6-3
7. ELECTRICAL PARTS LIST ............................ 7-1
– 5 –
The operating instructions mentioned here are partial abstracts
Color monitor 19T2
A26361-K616-Z100-1-5E19
English - 7
Installing an ergonomic video workstation
Before you set up your equipment you should select a suitable position for working at the monitor.
Please observe the following advices when installing a video workstation.
Window
permissible
reachin
g
sector
600 mm
edge of desk
permissible
reachin
g
sector
600 mm
Avoid direct and reflected glare. Avoid glare from electric
lighting.
Position the keyboard where it
is easiest to reach.
30°
30°
65°
65°
0°
60°
preferable viewin
g
sector
permissible viewin
g
sector
permissible
viewin
g
sector
approx. 90°
and
more
approx. 90°
Position the monitor for
optimum viewing. The viewing
distance to the monitor should
be approximately 50 cm.
Keep ventilated areas clear. Remember to maintain correct
posture.
Connecting the monitor
See your PC's operating manual for details of the ports on the system unit.
!
Please note the information provided in the "Safety" section in the chapter "Important
notes" at the beginning of this manual.
Do not cover the ventilation openings of the monitor.
If you are assembling monitors beside each other, there must be a minimum distance of
30 cm between monitors of the same constructional type, to avoid image distortion. With
different monitors, the distance must be increased, if necessary.
Color monitor 19T2
8 - English
A26361-K616-Z100-1-5E19
1
2
1 = Power connector
2 = Data cable
Be sure that the monitor and the system unit are switched off.
!
The system unit's power plug must be pulled out!
Connect the connector of the data cable to the (active) monitor port on the system unit and
secure the plug-in connection by tightening the safety screws.
i
If your system unit has two monitor ports ("onboard" screen controller and separate
graphics card), the monitor port for the separate graphics card is usually active.
Plug the power cable supplied into the power connector (1) of the monitor.
Plug the power connector of the monitor into a properly grounded power outlet.
Plug the power connector of the system unit into a properly grounded power outlet.
i
When you start working with your monitor for the first time you should install the
appropriate graphics drivers for your application software. Details of how to do this are
provided in the documentation on your screen controller/the associated driver software.
www.rtv-horvat-dj.hr
from the Operating Instruction Manual. The page numbers of
the Operating Instruction Manual remain as in the manual.
SECTION 1
GENERAL
1-1
Color monitor 19T2
A26361-K616-Z100-1-5E19
English - 9
Operation of the monitor
1
2
3
1 = Control panel with buttons for screen
setting
2 = Power indicator
3 = ON/OFF switch
Switching the monitor on
Press the ON/OFF switch (3).
The power indicator (2) lights up green when the system unit is turned on.
i
If your PC has a power management function (energy-saving mode), you should read the
"Notes on power management" of the monitor in this chapter.
When you start your system, several mode changes will usually be carried out when
various programs are called automatically (different settings for resolution and image
refresh rate). Do not be confused by the unusual displays. They are not error messages.
Switching the monitor off
Press the ON/OFF switch (3).
The power indicator (2) is dark.
Notes on power management
If your PC has a VESA DPMS (Video Electronics Standard Association, Display Power
Management Signaling) power management function (energy-saving mode), your monitor will fully
support this function. The monitor has a four-stage power management system.
Stage ON Standby mode Suspend mode OFF mode
Power indicator glows green flashes green/orange flashes green/orange glows orange
Function Monitor operating
normally
Monitor
is dark
Monitor
is dark
Monitor
is dark
Power
consumption
normal
< 140 W
reduced
to < 15 W
reduced
to < 15 W
reduced
to < 3 W
Color monitor 19T2
10 - English
A26361-K616-Z100-1-5E19
If your PC detects inactivity (no input) it sends an appropriate signal to the monitor to reduce the
power consumption. The power indicator of the monitor changes color to indicate the status change.
If there is still no input, power consumption is further reduced (OFF mode).
Once an input is made at the PC the screen contents are redrawn and full power is restored.
The length of the individual stages is determined by the power management system of the PC. For
detailed information on how energy-saving mode operates refer to the Operating Manual or
Technical Manual of your PC.
i
The service life of your monitor will be extended if the OFF mode is switched to after
30 minutes at the earliest (setting in screen saver, in your PC's BIOS setup or in the OSD
menu).
When the monitor is switched to OFF mode by the power management system a power
consumption of about 3 W is maintained to feed the circuit for redrawing the screen
contents.
To cut off power consumption totally, press the ON/OFF switch on the front of the monitor.
Changing the monitor settings
With the buttons on the control panel, you can change the monitor settings. Most settings are
carried out via an integrated OSD menu (On-Screen Display).
i
The OSD menu is available in different languages. The English menu names are used in
the following description (default setting). How you set a different language for the OSD
menu is described in the section "Setting the language for the OSD menu (LANGUAGE)".
12
4
5
3
1 = Factory settings button
2 = Picture size/position button
(automatic setting)
3 = Brightness/arrow up/down button
4 = Menu button
5 = Contrast/arrow left/right button
The factory settings button
(1) is used to reset the values to the factory settings.
With the picture size/position button
(2) the screen display can be automatically adjusted so that
it fits on the screen. This function is especially intended for computers with graphic user interfaces
(software) which fills the entire screen.
The brightness/arrow up/down buttons
(3) are used to set the brightness and to operate the
OSD menu.
The menu button
(4) switches the OSD menu on and off.
The contrast/arrow left/right buttons
(5) are used to set the contrast and to operate the OSD
menu.
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1-2
Color monitor 19T2
A26361-K616-Z100-1-5E19
English - 11
Operating the OSD menu
To set the OSD menu, perform the following steps:
Briefly press the Menu button
to activate the OSD menu.
The main menu appears on the screen with icons for the setting functions.
A
OK
EXIT
SIZE/CENTER
GEOMETRY
COLOR
CONVERGENCE
LANGUAGE
OPTION
HELP
MENU
?
Select the desired symbol with the arrow
buttons
and
, e. g.
GEOMETRY
.
(If you wish to exit the OSD menu, select
EXIT
.)
The selected symbol has a colored
marking.
Press the Menu button to display the
appropriate options window.
Depending on what options window is involved (here:
GEOMETRY
.), further icons are offered.
26
GEOMETRY
If necessary, select a different symbol with
the arrow buttons
.
Make the required setting using the arrow
buttons
.
All changes are stored automatically.
The OSD menu disappears after approx.
30 seconds. The OSD menu can be hidden
beforehand by pressing the menu button
(possibly several times).
Adjusting the contrast and brightness
The contrast and brightness can be adjusted directly with the arrow buttons
and
of
the control panel when the OSD menu is hidden. The set values are saved for all input signals.
i
You will increase the life of your screen if you adjust the contrast and brightness to
medium.
In the setting window for contrast and brightness, the horizontal frequency and refresh
rate of the current input signal are displayed as additional information.
Color monitor 19T2
12 - English
A26361-K616-Z100-1-5E19
Setting the brightness of the background
Setting the contrast between the foreground and background
Setting picture position and size (SIZE/CENTER)
The set values for the picture position and size are only saved for the current input signal.
Calling the SIZE/CENTER setting window
Horizontal picture position (H CENTER): Shifting the picture to the left or to the
right
Vertical picture position (V CENTER): Shifting the picture down or up
Horizontal picture size (H SIZE): Making the picture narrower or wider
Vertical picture size (V SIZE): Making the picture shorter or longer
Proportional picture size (ZOOM): Increasing or reducing picture size while
retaining the side ratios
The picture zoom adjustment will stop as soon as either the horizontal or vertical
size reaches its maximum or minimum value.
Setting the picture geometry (GEOMETRY)
Tilt distortion must be set when the screen display is not axially symmetrical.
Pincushion distortion is when the sides of the screen display are bent inward or outward. Trapezoid
distortion is when the top or bottom of the screen display is too wide or too narrow. Parallelogram
distortion means that the sides of the picture bend to the left or right.
The set value for the picture rotation is saved for all input signals. All other values of the picture
geometry are only saved for the current input signal.
Calling the GEOMETRY options window
Picture rotation (ROTATION): Rotating the picture in a clockwise or counterclockwise direction
Vertical pincushion distortion (PINCUSHION): Bending the right and left side
inward or outward
Asymmetrical pincushion distortion (PIN BALANCE): adjusting right and left side
symmetrically
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1-3
Color monitor 19T2
A26361-K616-Z100-1-5E19
English - 13
Trapezoid distortion (
KEYSTONE
): Making the bottom edge narrower and the top
edge wider or making the top edge narrower and the bottom edge wider
Parallelogram distortion (
KEY BALANCE
): Reducing the angle of the left and right
sides
Setting color temperature and colors (COLOR)
The "warmth" of the screen colors is set using the color temperature. The monitor has two fixed
color temperatures (K = Kelvin). In addition, a user-defined fine calibration of the colors can also be
carried out.
If you have reached the maximum value for one of the primary colors (red, green, blue), this will
affect the settings for the other primary colors.
The set value for the color setting is saved for all input signals.
Calling the
COLOR
setting window
9300 K
Selecting color temperature 9300 K (more blue)
5000 K
Selecting color temperature 5000 K (more red)
Setting a user-defined color temperature
(0 = more red, 100 = more blue)
sRGB
Setting the sRGB color mode
The sRGB color mode can only be used when your PC and other connected
devices (e.g. printer) are sRGB-compatible.
The sRGB color mode is an industry standard protocol designed to correlate the
displayed and printed colors of sRGB compliant devices. In order to display the
sRGB colors correctly ( = 2.2; 6500 K), you must set your PC to the sRGB profile
and adjust the brightness and contrast to the values shown in the menu.
Setting convergence (CONVERGENCE)
If objects on the screen have red or blue shadows, the vertical or horizontal convergence of the
monitor is incorrectly adjusted.
Calling the
CONVERGENCE
setting window
Horizontal convergence (
H CONVERGENCE
): Shifting red and blue shadows to the
right/to the left
Vertical convergence (
V CONVERGENCE)
: Shifting red and blue shadows up or
down
Color monitor 19T2
14 - English
A26361-K616-Z100-1-5E19
Setting language for the OSD menu (LANGUAGE)
A
Setting language for the OSD menu
You can choose from English (default setting), German, French, Spanish, Italian,
Swedish, Dutch, Russian and Japanese.
Setting monitor options (OPTION)
You can degauss the monitor in the settings window OPTION, you can set the Moiré correction,
change the OSD position, lock/release the buttons for monitor settings and restore original monitor
colors.
The set value for the Moiré correction is only saved for the current input signal. The other values are
independent of a change in the input signal.
Calling the OPTION setting window
Degaussing the monitor (MANUAL DEGAUSS)
The monitor is degaussed every time you switch it on. When color shifts occur in
the screen display due to the influence of magnetic fields, the screen must be
degaussed manually.
Press the button
. The monitor is degaussed for approximately 3 seconds.
If the monitor is to be degaussed a second time, please wait approximately
20 minutes before executing the function again.
Correcting the Moiré effect (MOIRE ADJUST)
If the picture you see on screen has light and dark stripes or appears dull and
blurred, this may be due to what is known as the moiré effect. This effect usually
has physical causes, being triggered by interference between the pixels in the
matrix and the video signal. The intensity of the moiré effect is dependent on the
screen resolution and horizontal frequency.
Setting horizontal position of the OSD menu (OSD H POSITION)
You can change the OSD position, for example, when you want to adjust the
picture behind an OSD window.
Setting vertical position of the OSD menu (OSD V POSITION)
You can change the OSD position, for example, when you want to adjust the
picture behind an OSD window.
Lock/unlock buttons for adjusting the monitor (CONTROL LOCK)
With this option all buttons on the front of the monitor (with the exception of the
menu button
and the on/off switch) can be locked and unlocked again.
OFF = unlocked
ON = locked
If ON has been selected, only the symbols OPTION or EXIT can be selected in the
main menu. If - with the OSD menu hidden - a button other than the menu button
or the on/off switch is pressed, the key symbol appears on the screen.
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1-4
Color monitor 19T2
A26361-K616-Z100-1-5E19
English - 15
Restore original monitor colors (
COLOR RETURN
)
After a number of years of operation the color brightness of your monitor may
decrease slowly. With this function you can reset the monitor colors to
manufacturer's default values. (Due to the natural aging process this function may
no longer work after a certain period of time.)
Prior to being able to use this function, the monitor must have been in standard
operation for at least 30 minutes (power indicator is green). If the monitor changes
over into energy saving mode, switch it back to normal mode and wait for
30 minutes. You may have to change the energy saving settings of your computer
in order to keep the monitor in standard operating setting for 30 minutes. If the
monitor is not ready, a respective message will appear.
Press the button
. While the original screen colors are being restored the
screen remains dark. This process takes about 2 seconds.
Open Help menu (HELP)
The most frequent questions and problems are covered here.
?
Calling the
HELP
window
RETURN TO MAIN MENU
Return to main menu
RECOMMENDED RESOLUTION
Recommended resolution:
1280 x 1024 at 85 Hz
FLICKER
Flickering:
Display of current refresh rate and reference to recommended
refresh rate >75 Hz
THIN HORIZONTAL LINE
Thin horizontal line:
There is no malfunction.
DISTORTED SHAPE
Picture distorted:
Setting the picture geometry (
GEOMETRY
)
OUT OF FOCUS
Picture is blurred:
Setting convergence (
CONVERGENCE
)
DISCOLORATION
Discoloration:
Check data cable
degauss monitor (
MANUAL DEGAUSS
)
Activating the factory settings
With the factory settings button on the front of the monitor, either the adjustment of a selected
function can be specifically reset to the factory setting, all settings for the current input signal can be
reset or all input signals reset.
Resetting a selected function to the factory setting
Select the function in the OSD menu to be reset.
Press the factory settings button
.
Color monitor 19T2
16 - English
A26361-K616-Z100-1-5E19
Resetting all settings for the current input signal
Press - with the OSD menu hidden - the factory settings button
.
All settings for the current input signal are reset.
i
With this method those settings are not reset which are not influenced by a change in the
input signal (language and position of the OSD menu, color setting, locking of the buttons
for monitor adjustment).
Resetting all settings for all input signals
Press and hold down the factory settings button
- with the OSD menu hidden - for at
least 2 seconds.
All settings including brightness and contrast are reset to the factory values.
Notes on ergonomic color adjustment
If you select colors for the display in your application programs, take note of the information below.
The primary colors blue and red on a dark background do not produce the minimum required
contrast of 3:1 and are therefore not suitable for continuous text and data entry.
When using several colors for characters and background and giving the primary colors full
modulation, you can obtain very suitable color combinations (see the following table):
Background Characters
black white purple blue cyan green yellow red
black + + - + + + -
white + + + - - - +
purple + + -----
blue - + - + - + -
cyan + - - + - - -
green + - - + - - -
yellow + - + + - - +
red -+----+
+ Color combination very suitable
- Color combination not suitable because color locations are too close together, thin characters
are not identifiable or rigorous focusing is demanded of the human eye.
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1-5
Color monitor 19T2
A26361-K616-Z100-1-5E19
English - 17
Technical data
Dimensions and weight
CRT: 46 cm (19")
Visible diagonals: 46 cm
Dot pitch: 0.24 - 0.25 mm (slot mask)
Maximal resolution: 1600 x 1200 pixels
Preset display area: 352 mm x 264 mm
Dimensions (W x H x D): 449 mm x 463 mm x 463 mm
Weight: 26 kg
Accessories: Power cable (1.8 m)
Storable display modes: 25 (10 of which are preset)
Electrical data
Video: analog, positive, 0.7 Vpp, 75 Ohm
Synchronization: Separate Sync. TTL
Composite Sync. TTL/ Sync. on Green
Horizontal frequency: 30 kHz .... 107 kHz (multi-scanning)
Refresh rate: 48 Hz .... 120 Hz
Maximum pixel rate: 230 MHz
Power supply: 180 V -264 V, 50 Hz - 60 Hz 3 Hz,
< 1 A max. at 220 V
Power consumption:
(see power management):
< 145 W (ON, Normal mode)
< 15 W (Standby mode)
< 15 W (Suspend mode)
< 3 W (OFF mode)
Environmental conditions
Environment class 3K2, IEC 721
Rated range of operation: 15 °C .... 35 °C
Humidity: 20 % .... 85 %
Limit range of operation: 5 °C .... 40 °C
Humidity: 20 % .... 85 %
Condensation must be avoided.
Color monitor 19T2
18 - English
A26361-K616-Z100-1-5E19
VESA-DDC-compatible VGA interface
Your monitor is equipped with a VESA-DDC-compatible VGA interface. VESA-DDC (Video
Electronics Standard Association, Display Data Channel) is used as the communications interface
between the monitor and the PC. If your PC is equipped with a VESA-DDC-compatible VGA
interface, it can automatically read the data for ensuring optimum operation from your monitor and
select the appropriate settings.
i
If the monitor 19T2 is not yet displayed in the list of monitors, you can select one of the
following monitors instead:
Siemens or Siemens Nixdorf MCM 21T1, MCM 2106, MCM 212V
Preset operating modes
i
The display position and size have been set to optimum values at the factory for the
operating modes listed above. Depending on the screen controller used, it may be
necessary to adjust the display position and size. In this case, you can change and save
the settings (see "Operation of the monitor").
Horizontal frequency Refresh rate Screen resolution
31.5 kHz 0.5 %
31.5 kHz
0.5 %
53.7 kHz
0.5 %
63.9 kHz
0.5 %
68.7 kHz
0.5 %
80.8 kHz
0.5 %
93.1 kHz
0.5 %
91.1 kHz
0.5 %
107.0 kHz
0.5 %
106.3 kHz
0.5 %
70 Hz
0.5 %
60 Hz
0.5 %
85 Hz
0.5 %
100 Hz
0.5 %
85 Hz
0.5 %
100 Hz
0.5 %
100 Hz
0.5 %
85 Hz
0.5 %
100 Hz
0.5 %
85 Hz
0.5 %
720 x 400
640 x 480
800 x 600
800 x 600
1024 x 768
1024 x 768
1152 x 864
1280 x 1024
1280 x 1024
1600 x 1200
For ergonomic reasons we recommend a refresh rate of at least 75 Hz and a maximum resolution of
1024 x 1280 pixels.
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1-6
Color monitor 19T2
A26361-K616-Z100-1-5E19
English - 19
Pin assignment D-SUB (15-pin)
1
5
6
10
11
15
Pin Meaning Pin Meaning
1 Video input red 9 + 5 V
2 Video input green / Sync. on green 10 Logic ground
3 Video input blue 11 Monitor ground
4 Monitor ground 12 Bi-directional Data (SDA)
5 DDC ground 13 H. sync
6 Red video ground 14 V. sync
7 Green video ground 15 Data Clock (SCL)
8 Blue video ground
Tilting and turning area
15°
5°
90°
90°
Color monitor 19T2
20 - English
A26361-K616-Z100-1-5E19
Error handling
Should an error occur, first check the following points. If the distortion is still not eliminated, the
monitor should, if possible, be checked on another PC.
Self-diagnosis
The monitor is equipped with a self-diagnosis function. If the monitor recognizes a fault, the screen
display remains dark and the power indicator glows green or flashes orange.
The power indicator glows green
Switch the connected PC off.
Press and hold down the
button on the front of the monitor for 2 seconds.
If all four color bars (white, red, green, blue) are shown, the monitor is operating properly. In this
case, check the PC.
If the color bars do not appear, this may be due to a fault in the monitor. Please contact our
customer service center with a description of the problem.
The power indicator flashes orange
Switch the monitor off and on again.
If the power indicator continues to flash orange, there may be a fault in the monitor. Determine the
interval at which the indicator flashes (in seconds) and contact our customer service center with a
description of the problem.
Possible malfunctions
If you cannot solve the problem, contact our customer service center.
The screen is blank (power indicator does not light)
Check whether the monitor is switched on.
Check whether the power cable on the monitor is connected correctly.
Check whether the mains socket is live.
The screen is blank (power indicator lights)
Check whether the system unit is switched on.
Check whether the data cable for the monitor is correctly attached to the monitor and the
monitor port on the system unit.
Check whether the monitor connection of the system unit used is active.
Press any key on the PC keyboard - the PC may be in energy saving mode.
Change the brightness and/or the contrast; the monitor may be adjusted to the maximum dark
setting.
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1-7
Color monitor 19T2
A26361-K616-Z100-1-5E19
English - 21
Two fine horizontal lines (wires) are visible
i
Your monitor is equipped with a Trinitron picture tube, which enables more light to reach
the screen with a vertical slot mask, and therefore produces more intense colors. The
thin lines visible with a white background are shadows of the damper wires, which
stabilize the vertical slot mask. They are characteristic of picture tubes with a vertical slot
mask. There is no malfunction.
The screen display is too small or not centered
The monitor recognizes an undefined mode (see "Technical data").
i
To display the current mode (horizontal frequency and refresh rate), press the
or
buttons.
Press the picture size/position button
to automatically adjust the screen display.
Correctly adjust the picture size and position with the OSD menu (see "Operation of the
monitor", section "Setting picture position and size (SIZE/CENTER)").
Picture geometry is defective
Correctly adjust the picture geometry with the OSD menu (see "Operation of the monitor",
section "Setting picture geometry (GEOMETRY)").
Colors are impure or shifted
Degauss the monitor (see "Operation of the monitor", section "Setting monitor options
(OPTION)").
Set the convergence (see "Operation of the monitor", section "Setting convergence
(CONVERGENCE)").
White does not look white
Set the color temperature (see "Operation of the monitor", section "Setting color temperature
and colors (COLOR)").
Screen display has lines, is dull or blurred
Set the brightness and contrast (see "Operation of the monitor").
Degauss the monitor (see "Operation of the monitor", section "Setting monitor options
(OPTION)").
Set the convergence and reduce the Moiré correction (see "Operation of the monitor", section
"Setting monitor options (OPTION)").
The screen display is flickering
Set an ergonomic refresh rate ( 75 Hz) using the PC software (see documentation for your PC
or your screen controller/graphics card).
Monitor adjustment buttons do not react
The buttons have probably been locked with the OSD menu.
Unlock the monitor adjustment buttons (see "Operation of the monitor", section "Setting monitor
options (OPTION)").
Color monitor 19T2
22 - English
A26361-K616-Z100-1-5E19
A humming noise is heard after switch-on
The monitor is degaussed every time you switch it on. This produces the humming noise. There is
no malfunction.
Error messages on the screen
MONITOR IS WORKING OUT OF THE SCAN RANGE
The input signal (horizontal frequency and refresh rate) does not correspond to the technical
monitor data.
Adjust the video frequency range using the PC software (see documentation for your PC or
your screen controller/graphics card).
MONITOR IS WORKING - CHECK SIGNAL CABLE
The monitor does not recognize an input signal.
Check whether the system unit is switched on.
Check whether the data cable for the monitor is correctly attached to the monitor and the
monitor port on the system unit.
Check whether the power cable on the system unit is connected to a power outlet with earthing
contact.
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1-8
19T2
www.rtv-horvat-dj.hr
SECTION 2
DISASSEMBLY
2-1. CABINET REMOVAL
Push in the tip of a screwdriver about
5mm to unlock the two claws.
Cabinet
Bezel assembly
Bezel assembly
Cabinet
1
Two claws
1
Two claws
3
Cabinet
2
Two screws
(+BVTP 4 x 16)
2-2. SHIELD (EMI, VIDEO),
SIDE COVER (L and R) REMOVAL
2
EMI shield (Upper)
4
Side cover (L)
1
Three screws
(+BVTT 4 x 8)
3
Two screws
(+BVTT 4 x 8)
5
Four screws
(+BVTT 4 x 8)
8
Video shield
6
Side cover (R)
2-1
7
Three screws
(+BVTT 4 x 8)
2-3. A BOARD REMOVAL
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CN303
CN309
CN306
CN311
CN305
4
A board
1
Screw
(+BVTT 4 x 8)
2
Cable stopper
3
Three screws
(+BVTT 3 x 8)
19T2
2-4. REAR SHIELD COMPLETE ASSY,
D BOARD REMOVAL
Referring to 2-3, disconnect five connectors
(CN303, CN305, CN306, CN309 and CN311).
A
N board
A
7
Two screws
(+BVTP 3 x 8)
CN303
6
Screw
(+P 3.5 x 20)
5
Three screws
(+BVTT 3 x 8)
8
D board
CN601
CN600
4
Rear shield
complete assembly
3
Widening the chassis toward
the direction A , disengage
two claws.
1
Cable cover
2-2
2
Screw
(+BVTT 4 x 8)
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