Sony HMD-A420 Service manual
MODIFICATION
# No. DATA CONTENTS
#1 2000.12 Correct in writing. (P.6-3)
HISTORY
MODEL NAME :HMD-A420
SERVICE MANUAL
PARTS No. : 9-978-686-03
* Blue characters are linking.
#2 2000.12 Addition of printed wiring boards. (P. 5-8, 5-11, 5-13)
#3 2001.2 Correction of adjustments. (P. 4-1, 4-2)
#4 2000.2 Format of electrical parts list was renewed. Corection is included.
HMD-A420
SERVICE MANUAL
SPECIFICATIONS
CRT 0.24 mm aperture grille pitch (center)
19 inches measured diagonally
90-degree deflection
FD Trinitron
Viewable image size Approx. 365 × 274 mm (w/h)
Resolution
Maximum Horizontal: 1800 dots
Recommended Horizontal: 1280 dots
Standard image area Approx. 352 × 264 mm (w/h)
Deflection frequency* Horizontal: 30 to 96 kHz
AC input voltage/current 100 – 240 V, 50 – 60 Hz, 2.3 – 1.0 A
Power consumption Max. 150 W
Dimensions
Mass Approx. 26 kg (57 lb 5 oz)
Plug and Play DDC1/DDC2B/DDC2Bi
3
(14
18.0" viewing image
Vertical: 1440 lines
Vertical: 1024 lines
7
(13
Vertical: 48 to 120 Hz
Approx. 497 × 458 × 469 mm
(w/h/d)
5
(19
/8 × 10 7/8 inches)
/8 × 10 1/2 inches)
/8 × 18 1/8 × 18 1/2 inches)
AEP Model
Chassis No. SCC-L35A-A
H1
CHASSIS
* Recommended horizontal and vertical timing condition
• Horizontal sync width should be more than 1.0 µsec.
• Horizontal blanking width should be more than 3.0 µsec.
• Vertical blanking width should be more than 500 µsec.
Design and specifications are subject to change without notice.
TRINITRON® COLOR COMPUTER DISPLAY
HMD-A420
r
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
Voltmete
(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
0 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.
AVERTISSEMENT!!
NE JAMAIS METTRE SOUS TENSION QUAND LA
BOBINE DE DEMAGNETISATION EST ENLEVÉE.
ATTENTION AUX COMPOSANTS RELATIFS À LA
SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE TRAME ET
UNE MARQUE
0 SONT CRITIQUES POUR LA SÉCURITÉ.
NE LES REMPLACER QUE PAR UNE PIÈCE PORTANT LE
NUMÉRO SPECIFIÉ. LES RÉGLAGES DE CIRCUIT DONT
L’IMPORTANCE EST CRITIQUE POUR LA SÉCURITÉ DU
FONCTIONNEMENT SONT IDENTIFIÉS DANS LE
PRÉSENT MANUEL. SUIVRE CES PROCÉDURES LORS
DE CHAQUE REMPLACEMENT DE COMPOSANTS CRITIQUES, OU LORSQU’UN MAUVAIS FONCTIONNEMENT
EST SUSPECTÉ.
– 2 –
POWER SAVING FUNCTION
This monitor meets the power-saving guidelines set by VESA,
E
NERGY STAR, and NUTEK. If no signal is received by the
monitor from the connected computer, the monitor will
automatically reduce power consumption as shown below.
HMD-A420
Power mode Power
normal
operation
active off** ≤ 3 W orange
power off 0 W off
* Figures reflect power consumption when no USB compatible
peripherals are connected to the monitor.
** When your computer enters the “active off” mode, the input signal is
cut and NO INPUT SIGNAL appears on the screen. After 20 seconds,
the monitor enters the power saving mode.
consumption*
≤ 150 W green
! (power)
indicator
DIAGNOSIS
This monitor is equipped with a self-diagnosis function. If there is
a problem with your monitor or computer, the screen will go
blank and the ! (power) indicator will either light up green or
flash orange. If the ! (power) indicator is lit in orange, the
computer is in power saving mode. Try pressing any key on the
keyboard.
If all four color bars appear (white, red, green, blue), the monitor
is working properly. Reconnect the video input cable and check
the condition of your computer.
If the color bars do not appear, there is a potential monitor failure.
Inform your authorized Sony dealer of the monitor’s condition.
MENU
! (power) indicator
If the ! (power) indicator is green
1
Disconnect the video input cable or turn off the
connected computer.
2
Press the ! (power) button twice to turn the monitor
off and then on.
3
Move the control button , for 2 seconds before the
monitor enters power saving mode.
MENU
If the ! (power) indicator is flashing orange
Press the ! (power) button twice to turn the monitor off
and then on.
If the ! (power) indicator lights up green, the monitor is working
properly.
If the ! (power) indicator is still flashing, there is a potential
monitor failure. Count the number of seconds between orange
flashes of the ! (power) indicator and inform your authorized
Sony dealer of the monitor’s condition. Be sure to note the model
name and serial number of your monitor. Also note the make and
model of your computer and video board.
– 3 –
HMD-A420
TIMING SPECIFICATION
MODE AT PRODUCTION
RESOLUTION 640 X 480 640 X 480 720 X 400 800 X 600 832 X 624
CLOCK 25.175 MHz 36.000 MHz 28.321 MHz 56.250 MHz 57.283 MHz
— HORIZONTAL —
H-FREQ 31.469 kHz 43.269 kHz 31.468 kHz 53.674 kHz 49.725 kHz
H. TOTAL 31.778 23.111 31.779 18.631 20.111
H. BLK 6.356 5.333 6.356 4.409 5.586
H. FP 0.636 1.556 0.636 0.569 0.559
H. SYNC 3.813 1.556 3.813 1.138 1.117
H. BP 1.907 2.222 1.907 2.702 3.910
H. ACTIV 25.422 17.778 25.423 14.222 14.524
— VERTICAL —
V. FREQ(HZ) 59.940 Hz 85.008 Hz 70.084 Hz 85.061 Hz 74.550 Hz
V. TOTAL 525 509 449 631 667
V. BLK 45 29 49 31 43
V. FP 10 1 12 1 1
V. SYNC 2 3 2 3 3
V. BP 33 25 35 27 39
V. ACTIV 480 480 400 600 624
— SYNC —
INT(G) NO NO NO NO NO
EXT(H/V)/POLARITY YES N/N YES N/N YES N/P YES N/P YES N/N
EXT(CS)/POLARITY NO NO NO NO NO
INT/NON INT NON INT NON INT NON INT NON INT NON INT
MODE 1 MODE 2 MODE 3 MODE 4 MODE 5
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MODE AT PRODUCTION
RESOLUTION 1024 X 768 1152 X 870 1280 X 1024 1280 X 1024 1600 X 1200
CLOCK 94.500 MHz 100.000 MHz 135.000 MHz 157.500 MHz 202.500 MHz
— HORIZONTAL —
H-FREQ 68.677 kHz 68.681 kHz 79.976 kHz 91.146 kHz 93.750 kHz
H. TOTAL 14.561 14.560 12.504 10.971 10.667
H. BLK 3.725 3.040 3.022 2.844 2.765
H. FP 0.508 0.320 0.119 0.406 0.316
H. SYNC 1.016 1.280 1.067 1.016 0.948
H. BP 2.201 1.440 1.837 1.422 1.501
H. ACTIV 10.836 11.520 9.481 8.127 7.901
— VERTICAL —
V. FREQ(HZ) 84.997 Hz 75.062 Hz 75.025 Hz 85.024 Hz 75.000 Hz
V. TOTAL 808 915 1066 1072 1250
V. BLK 40 45 42 48 50
V. FP 1 3 1 1 1
V. SYNC 3 3 2 3 3
V. BP 36 39 38 44 46
V. ACTIV 768 870 1024 1024 1200
— SYNC —
INT(G) NO NO NO NO NO
EXT(H/V)/POLARITY YES P/P YES N/N YES P/P YES P/P YES P/P
EXT(CS)/POLARITY NO NO NO NO NO
INT/NON INT NON INT NON INT NON INT NON INT NON INT
MODE 6 MODE 7 MODE 8 MODE 9 MODE 10
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2000.8.16 VER.
– 4 –
TABLE OF CONTENTS
Section Title Page
1. GENERAL .................................................................. 1-1
2. DISASSEMBLY
2-1. Bucket Assembly Removal ................................. 2-1
2-2. A Board Removal ................................................ 2-1
2-3. D Board Removal ................................................ 2-2
2-4. Service Position .................................................... 2-3
2-5. H Board Removal ................................................. 2-4
2-6. Picture Tube Removal .......................................... 2-4
2-7. Harness Location .................................................. 2-5
3. SAFETY RELATED ADJUSTMENT ............. 3-1
4. ADJUSTMENTS ...................................................... 4-1
HMD-A420
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 H Board ......................... 5-8
(2) Schematic Diagram of A Board ......................... 5-9
(3) Schematic Diagrams of
D (a, b, c, d, e, f) Board .................... 5-11
5-5. Semiconductors .................................................. 5-23
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 –
SECTION 1
The operating instructions mentioned here are partial abstracts
from the Operating Instruction Manual. The page numbers of
the Operating Instruction Manual remein as in the manual.
4
Precautions
Warning on power connections
• Use the supplied power cord. If you use a different power cord,
be sure that it is compatible with your local power supply.
For the customers in the UK
If you use the monitor in the UK, be sure to use the supplied UK
power cable.
• Before disconnecting the power cord, wait at least 30 seconds
after turning off the power to allow the static electricity on the
screen’s surface to discharge.
• After the power is turned on, the screen is demagnetized
(degaussed) for about 5 seconds. This generates a strong
magnetic field around the screen which may affect data stored
on magnetic tapes and disks placed near the monitor. Be sure to
keep magnetic recording equipment, tapes, and disks away
from the monitor.
Installation
Do not install the monitor in the following places:
• on surfaces (rugs, blankets, etc.) or near materials (curtains,
draperies, etc.) that may block the ventilation holes
• near heat sources such as radiators or air ducts, or in a place
subject to direct sunlight
• in a place subject to severe temperature changes
• in a place subject to mechanical vibration or shock
• on an unstable surface
• near equipment which generates magnetism, such as a
transformer or high voltage power lines
• near or on an electrically charged metal surface
Maintenance
• Clean the screen with a soft cloth. If you use a glass cleaning
liquid, do not use any type of cleaner containing an anti-static
solution or similar additive as this may scratch the screen
’s
coating.
• Do not rub, touch, or tap the surface of the screen with sharp or
abrasive items such as a ballpoint pen or screwdriver. This type
of contact may result in a scratched picture tube.
• Clean the cabinet, panel and controls with a soft cloth lightly
moistened with a mild detergent solution. Do not use any type
of abrasive pad, scouring powder or solvent, such as alcohol or
benzene.
Transportation
When you transport this monitor for repair or shipment, use the
original carton and packing materials.
Use of the stand
Insert the supplied stand into the groove to adjust the angle of the
monitor. You can use the stand in either the vertical or horizontal
position. If you do not need the stand for this purpose, you can use
it as a convenient CD rack.
The equipment should be installed near an easily accessible
outlet.
Example of plug types
for 100 to 120 V AC for 200 to 240 V AC for 240 V AC only
5
GB
Identifying parts and controls
See the pages in parentheses for further details.
1
Control button (page 9)
The control button is used to display the menu and make
adjustments to the monitor, including brightness and contrast
adjustments.
2
!
(power) switch and indicator (pages 6, 12, 15)
This button turns the monitor on and off. The power indicator
lights up in green when the monitor is turned on, and either
flashes in green and orange, or lights up in orange when the
monitor is in power saving mode.
3
AC IN connector (page 6)
This connector provides AC power to the monitor.
4
Video input connector (HD15) (page 6)
This connector inputs RGB video signals (0.700 Vp-p,
positive) and sync signals.
* DDC (Display Data Channel) is a standard of VESA.
5
USB (universal serial bus) downstream connectors
(page 7)
Use these connectors to link USB peripheral devices to the
monitor.
6
USB (universal serial bus) upstream connector
(page 7)
Use this connector to link the monitor to a USB compliant
computer.
MENU
RearFront
Pin No. Signal
1 Red
2 Green
3 Blue
4 ID (Ground)
5 DDC Ground*
6 Red Ground
7 Green Ground
8 Blue Ground
9 DDC + 5V*
10 Ground
11 ID (Ground)
12 Bi-Directional Data (SDA)*
13 H. Sync
14 V. Sync
15 Data Clock (SCL)*
1
2
3
4
5
8
7
6
11
12
13
14
15
10
9
GENERAL
1-1
6
Setup
Before using your monitor, check that the following accessories
are included in your carton:
• Power cord (1)
• USB cable (1)
• Monitor stand (1)
• Warranty card (1)
• Notes on cleaning the screen
’s surface (1)
• This instruction manual (1)
Step 1:Connect your monitor to
your computer
Turn off the monitor and computer before connecting.
Note
Do not touch the pins of the video cable connector as this might bend the
pins.
x
Connecting to an IBM PC/AT or compatible
computer
x
Connecting to a Macintosh or compatible
computer
Step 2:Connect the power cord
With the monitor and computer switched off, first connect the
power cord to the monitor, then connect it to a power outlet.
Step 3:Turn on the monitor and
computer
First turn on the monitor, then turn on the computer.
The installation of your monitor is complete.
If necessary, use the monitor
’s controls to adjust the picture.
If no picture appears on your screen
• Check that the monitor is correctly connected to the computer.
• If NO INPUT SIGNAL appears on the screen, confirm that
your computer’s graphic board is completely seated in the
correct bus slot.
• If you are replacing an old monitor with this model and OUT
OF SCAN RANGE appears on the screen, reconnect the old
monitor. Then adjust the computer
’s graphic board so that the
horizontal frequency is between 30
– 96 kHz, and the vertical
frequency is between 48
– 120 Hz.
For more information about the on-screen messages, see “Trouble
symptoms and remedies
” on page 13.
Setup on various OS (Operating System)
This monitor complies with the
“DDC” Plug & Play standard and
automatically detects all the monitor
’s information. No specific driver
needs to be installed to the computer.
If you connect the monitor to your PC, and then boot your PC for the first
time, the setup Wizard may be displayed on the screen. Click on
“Next”
several times according to the instructions from the Wizard until the Plug
& Play Monitor is automatically selected so that you can use this monitor.
For customers using Windows NT4.0
Monitor setup in Windows NT4.0 does not use the display driver. Refer
to the Windows NT4.0 instruction manual for further details on adjusting
the resolution, refresh rate, and number of colors.
to video output
IBM PC/AT or
compatible computer
You will need a Macintosh adapter (not supplied).
Macintosh adapter (not supplied)
Macintosh or
compatible
computer
to video output
to AC IN
to a power outlet
power cord (supplied)
7
GB
Connecting Universal Serial Bus
(USB) compliant peripherals
Your monitor has one upstream USB connector (on the rear
panel) and four downstream USB connectors (two on both the left
and right sides). They provide a fast and easy way to connect USB
compliant peripheral devices (such as keyboards, mice, printers
and scanners) to your computer using a standardized USB cable.
To use your monitor as a hub for your peripheral devices, connect
the USBs as illustrated below.
1
Turn on the monitor and computer.
2
Connect your computer to the square upstream
connector using the supplied USB cable.
For customers using Windows
If a message appears on your screen, follow the on-screen instructions
and select Generic USB Hub as the default setting.
3
Connect your USB compliant peripheral devices to
the rectangular downstream USB connectors.
Notes
• Not all computers and/or operating systems support USB
configurations. Check your computer’s instruction manual to see if you
can connect USB devices.
• In most cases, USB driver software needs to be installed on the host
computer. Refer to the peripheral device
’s instruction manual for
further details.
• The monitor functions as a USB hub as long as the monitor is either
“on” or in power saving mode.
• If you connect a keyboard or mouse to the USB connectors and then
boot your computer for the first time, the peripheral devices may not
function. First connect the keyboard and mouse directly to the
computer and set up the USB compliant devices. Then connect them to
this monitor.
• Do not lean on the monitor when plugging in the USB cables. The
monitor may suddenly shift and cause injury.
Selecting the on-screen menu
language (LANGUAGE/
INFORMATION)
English, French, German, Italian, Spanish, Dutch, Swedish,
Russian and Japanese versions of the on-screen menus are
available. The default setting is English.
1
Press the center of the control button.
See page 9 for more information on using the control button.
2
Move the control button
m
/
M
to highlight
LANGUAGE/INFORMATION and press the center
of the control button again.
3
Move the control button
m
/
M
to select . Then move
the control button
<
/
,
to select a language.
• ENGLISH
• FRANÇAIS: French
• DEUTSCH: German
• ITALIANO: Italian
• ESPAÑOL: Spanish
• NEDERLANDS: Dutch
• SVENSKA: Swedish
• : Russian
• : Japanese
To close the menu
Press the center of the control button once to return to the main MENU,
and twice to return to normal viewing. If no buttons are pressed, the menu
closes automatically after about 30 seconds.
To reset to English
See “Resetting the adjustments (RESET)
” on page 11.
to USB compliant
peripheral devices
to a USB compliant
computer
to USB compliant
peripheral devices
MENU
EX I T
PICTURE EFFECT
SI ZE / CENTER
GEOMETRY
SCREEN
CONVERGENCE
COLOR
RESET
SELECT
LANGUAGE/ INFORMAT NOI
MENU
MENU
SVENSKA
ESPAÑOL NEDERLAN SD
DEUTSCH I T A L I ANO
ENGL I SH FRANÇAIS
SELECT EXI T
LA ANG GEU/INFORMATION
1-2
8
Customizing Your Monitor
You can make numerous adjustments to your monitor using the
on-screen menu.
Navigating the menu
Press the center of the control button to display the main MENU
on your screen. See page 9 for more information on using the
control button.
Use the control button to select one of the following menus.
x
Displaying the current input signal
The horizontal and vertical frequencies of the current input signal
are displayed under the BRIGHTNESS/CONTRAST menu. If the
signal matches one of this monitor
’s factory preset modes, the
resolution is also displayed.
1
EXIT
Select EXIT to close the menu.
2
PICTURE EFFECT
(page 9)
Selects the PICTURE
EFFECT menu to choose the
most appropriate preset
picture mode.
3
SIZE/CENTER (page 10)
Selects the SIZE/CENTER
menu to adjust the picture
’s
centering, size or zoom.
4
GEOMETRY (page 10)
Select the GEOMETRY
menu to adjust the picture
’s
rotation and shape.
5
CONVERGENCE
(page 10)
Selects the
CONVERGENCE menu to
adjust the picture’s horizontal
and vertical convergence.
MENU
EX I T
P I CTURE EFFECT
SI ZE / CENTER
GEOMETRY
SCREEN
CONVE RGENC E
COLOR
RESET
SELECT
LANGUAGE / IN FORMA T NOI
MENU
SELECT EXI T
DYNAMI C
STANDARD
PICTURE EFFECT
H- CEN TER
26
SELECT EXI T
SIZE/CENTER
SELECT EXI T
ROTA T I ON
26
GE
OM
ET
R
Y
SELECT EXI T
26
CONVERGENCE
6
SCREEN (page 11)
Select the SCREEN menu to
degauss the screen and adjust
the moire cancellation level.
7
COLOR (page 11)
Select the COLOR menu to
adjust the picture
’s color
temperature. You can use this
to match the monitor’s colors
to a printed picture
’s colors.
8
LANGUAGE/
INFORMATION
(page 7, 14)
Select the LANGUAGE/
INFORMATION menu to
choose the on-screen menu
’s
language and display this
monitor’s information box.
9
RESET (page 11)
Select the RESET menu to
reset the adjustments.
DEGAUSS
ON
SELECT EXI T
SCREEN
KKK
R50
G50
B50
SELECT EXI T
COLOR
5000 6500 9300
USER
SVENSKA
ESPAÑOL NEDERLAN SD
DEUTSCH I T A L I ANO
ENGL I SH FRANÇAIS
SELECT EXI T
LA ANG GEU / I NFORMATI ON
RESET
MODE A L L
EXI T
RESET
26 26
H
:
6
8
.7 kHz / V
:
85Hz
1024X768
BRI GHTNESS/ CONTRAST
the horizontal
and vertical
frequencies of
the current
input signal
the resolution
of the current
input signal
9
GB
x
Using the control button
1
Display the main MENU.
Press the center of the control button to display the main
MENU on your screen.
2
Select the menu you want to adjust.
Highlight the desired menu by moving the control button up
(
M
), down (
m
), and left (
<
) or right (
,
).
3
Adjust the menu.
Move the control button left (
<
) or right (
,
) to make the
adjustment.
4
Close the menu.
Press the center of the control button once to return to the
main MENU, and twice to return to normal viewing. If no
buttons are pressed, the menu closes automatically after about
30 seconds.
x
Resetting the adjustments
You can reset the adjustments using the RESET menu. See
page 11 for more information on resetting the adjustments.
Adjusting the brightness and
contrast
Brightness and contrast adjustments are made using a separate
BRIGHTNESS/CONTRAST menu.
These settings are stored in memory for all input signals.
1
Move the control button in any direction.
The BRIGHTNESS/CONTRAST menu appears on the
screen.
2
Move the control button
m
/
M
to adjust the
brightness ( ), and
<
/
,
to adjust the contrast
(
6
).
The menu automatically disappears after about 3 seconds.
Adjusting the picture quality
(PICTURE EFFECT)
The PICTURE EFFECT feature allows you to select the most
appropriate picture mode from among two preset modes
maximum performance.
1
Press the center of the control button.
The main MENU appears on the screen.
2
Move the control button to highlight PICTURE
EFFECT and press the center of the control button
again .
The PICTURE EFFECT menu appears on the screen.
3
Move the control button
m
/
M
to select the desired
picture mode.
MENU
MENU
MENU
MENU
MENU
Select For
STANDARD
images with high contrast and
brightness. Choose this mode for
commonly used applications, such as
spreadsheets, word processing,
E-mail, or WEB surfing.
DYNAMIC
extremely vivid and photo-realistic
images. Brighter than “STANDARD”
mode, choose this for intense graphic
applications such as games, DVD
playback, or entertainment software.
26 26
H
:
68.7kHz/V
:
85Hz
1024X768
BRI GHTNESS/ CONTRAST
1-3
10
Adjusting the centering of the
picture (CENTER)
This setting is stored in memory for the current input signal.
1
Press the center of the control button.
The main MENU appears on the screen.
2
Move the control button
m
/
M
to highlight SIZE/
CENTER and press the center of the control button
again.
The SIZE/CENTER menu appears on the screen.
3
First move the control button
m
/
M
to select
(H-CENTER) for horizontal adjustment, or
(V-CENTER) for vertical adjustment. Then move
the control button
<
/
,
to adjust the centering.
Adjusting the size of the picture
(SIZE)
This setting is stored in memory for the current input signal.
1
Press the center of the control button.
The main MENU appears on the screen.
2
Move the control button
m
/
M
to highlight SIZE/
CENTER and press the center of the control button
again.
The SIZE/CENTER menu appears on the screen.
3
First move the control button
m
/
M
to select
(H-SIZE) for horizontal adjustment, or
(V-SIZE) for vertical adjustment. Then move the
control button
<
/
,
to adjust the size.
Enlarging or reducing the picture
(ZOOM)
This setting is stored in memory for the current input signal.
1
Press the center of the control button.
The main MENU appears on the screen.
2
Move the control button
m
/
M
to highlight SIZE/
CENTER and press the center of the control button
again.
The SIZE/CENTER menu appears on the screen.
3
Move the control button
m
/
M
to select (ZOOM),
and move
<
/
,
to enlarge or reduce the picture.
Adjusting the shape of the picture
(GEOMETRY)
The GEOMETRY settings allow you to adjust the rotation and
shape of the picture.
The (ROTATION) setting is stored in memory for all input
signals. All other settings are stored in memory for the current
input signal.
1
Press the center of the control button.
The main MENU appears on the screen.
2
Move the control button
m
/
M
to highlight
GEOMETRY and press the center of the control
button again.
The GEOMETRY menu appears on the screen.
3
First move the control button
m
/
M
to select the
desired adjustment item. Then move the control
button
<
/
,
to make the adjustment.
Adjusting the convergence
(CONVERGENCE)
The CONVERGENCE settings allow you to adjust the quality of
the picture by controlling the convergence. The convergence
refers to the alignment of the red, green, and blue color signals.
If you see red or blue shadows around letters or lines, adjust the
convergence.
These settings are stored in memory for all input signals.
1
Press the center of the control button.
The main MENU appears on the screen.
2
Move the control button
m
/
M
to highlight
CONVERGENCE and press the center of the control
button again.
The CONVERGENCE menu appears on the screen.
3
First move the control button
m
/
M
to select the
desired adjustment item. Then move the control
button
<
/
,
to make the adjustment.
Select To
(ROTATION)
rotate the picture
(PIN)
expand or contract the picture sides
(PIN BALANCE)
shift the picture sides to the left or
right
(KEY)
adjust the picture width at the top of
the screen
(KEY BALANCE)
shift the picture to the left or right at
the top of the screen
Select To
horizontally shift red or blue shadows
vertically shift red or blue shadows
11
GB
Adjusting the color of the picture
(COLOR)
The COLOR settings allow you to adjust the picture
’s color
temperature by changing the color level of the white color field.
Colors appear reddish if the temperature is low, and bluish if the
temperature is high. This adjustment is useful for matching the
monitor’s colors to a printed picture
’s colors.
This setting is stored in memory for all input signals.
1
Press the center of the control button.
The main MENU appears on the screen.
2
Move the control button
m
/
M
to highlight COLOR
and press the center of the control button again.
The COLOR menu appears on the screen.
3
Move the control button
<
/
,
to select a color
temperature.
The preset color temperatures are 5000K, 6500K, and 9300K.
Since the default setting is 9300K, the whites will change
from a bluish hue to a reddish hue as the temperature is
lowered to 6500K and 5000K.
4
If necessary, fine tune the color temperature.
First move the control button
<
/
,
to select USER. Then
move the control button
m
/
M
to select R (red), G (green), or
B (blue) and move the control button
<
/
,
to make the
adjustment.
If you fine tune the color temperature, the new color settings
are stored in memory and recalled whenever you select
USER.
Additional settings (SCREEN)
You can manually degauss (demagnetize) the screen, and adjust
the moire cancellation level.
1
Press the center of the control button.
The main MENU appears on the screen.
2
Move the control button
m
/
M
to highlight
SCREEN and press the center of the control button
again.
The SCREEN menu appears on the screen.
3
Move the control button
m
/
M
to select the desired
adjustment item.
Adjust the selected item according to the following
instructions.
x
Degaussing the screen
The monitor is automatically demagnetized when the power is
turned on.
To manually degauss the monitor, first move the
control button
m
/
M
to select (DEGAUSS). Then move
the control button
,
.
The screen is degaussed for about 5 seconds. If a second degauss
cycle is needed, allow a minimum interval of 20 minutes for the
best result.
x
Adjusting the moire
*
If elliptical or wavy patterns appear on the screen, adjust the
moire cancellation level.
To adjust the amount of moire cancellation, first move
the control button
m
/
M
to select (CANCEL MOIRE).
Then move the control button
<
/
,
until the moire
effect is at a minimum.
* Moire is a type of natural interference which produces soft, wavy lines
on your screen. It may appear due to interference between the pattern
of the picture on the screen and the phosphor pitch pattern of the
monitor.
Resetting the adjustments (RESET)
This monitor has the following two reset methods. Use the
RESET menu to reset the adjustments.
1
Press the center of the control button.
The main MENU appears on the screen.
2
Move the control button
m
/
M
to highlight
0
RESET
and press the center fo the control button again.
The RESET menu appears on the screen.
Reset the settings according to the following instructions.
Resetting all of the adjustment data for the
current input signal (MODE)
Move the control button
<
.
The MODE item is selected. All of the adjustment data for the
current input signal is reset.
Note that the following items are not reset by this method.
• on-screen menu language (page 7)
• picture’s rotation (page 10)
Resetting all of the adjustment data to factory
preset levels (ALL)
Move the control button
,
.
The ALL item is selected. All of the adjustment data for the
current input signal is reset. All of the adjustment data (except for
the USER settings in the COLOR menu) is reset to the factory
preset levels.
Note
The monitor
’
s buttons will not operate for about 5 seconds when ALL is
selected.
KKK
R50
G50
B50
SELECT EXI T
COLOR
5000 6500 9300
USER
MENU
Example of moire
1-4
12
Technical Features
Preset and user modes
When the monitor receives an input signal, it automatically
matches the signal to one of the factory preset modes stored in the
monitor’s memory to provide a high quality picture at the center of
the screen.
(See Appendix for a list of the factory preset modes.)
For input signals that do not match one of the factory preset modes,
the digital Multiscan technology of this monitor ensures that a
clear picture appears on the screen for any timing in the monitor’s
frequency range (horizontal: 30 – 96 kHz, vertical: 48 – 120 Hz).
If the picture is adjusted, the adjustment data is stored as a user
mode and automatically recalled whenever the same input signal
is received.
Note for Windows users
For Windows users, check your video board manual or the utility
program which comes with your graphic board and select the
highest available refresh rate to maximize monitor performance.
Power saving function
This monitor meets the power-saving guidelines set by VESA,
E
NERGY
S
TAR, and NUTEK. If no signal is received by the
monitor from the connected computer, the monitor will
automatically reduce power consumption as shown below.
* Figures reflect power consumption when no USB compatible
peripherals are connected to the monitor.
** When your computer enters the “active off” mode, the input signal is
cut and NO INPUT SIGNAL appears on the screen. After 20 seconds,
the monitor enters the power saving mode.
Troubleshooting
Before contacting technical support, refer to this section.
If thin lines appear on your screen
(damper wires)
The visible lines on your screen especially when the background
screen color is light (usually white), are normal for the Trinitron
monitor. This is not a malfunction. These are shadows from the
damper wires used to stabilize the aperture grille. The aperture
grille is the essential element that makes a Trinitron picture tube
unique by allowing more light to reach the screen, resulting in a
brighter, more detailed picture.
On-screen messages
If there is something wrong with the input signal, one of the
following messages appears on the screen. To solve the problem,
see “Trouble symptoms and remedies
” on page 13.
The input signal condition
OUT OF SCAN RANGE
indicates that the input signal is not supported by the
monitor’s specifications.
NO INPUT SIGNAL
indicates that no signal is being input to the monitor.
Power mode Power
consumption
*
!
(power)
indicator
normal
operation
≤
150 W green
active off**
≤
3 W orange
power off 0 W off
Damper wires
INFORMATION
OUT OF SCAN RANGE
Input signal condition
13
GB
Trouble symptoms and remedies
If the problem is caused by the connected computer or other equipment, please refer to the connected equipment
’s instruction manual.
Use the self-diagnosis function (page 15) if the following recommendations do not resolve the problem.
Symptom Check these items
No picture
If the
!
(power) indicator is not lit • Check that the power cord is properly connected.
• Check that the
!
(power) switch is in the
“on” position.
If the NO INPUT SIGNAL message
appears on the screen, or if the
!
(power) indicator is orange
• Check that the video signal cable is properly connected and all plugs are
firmly seated in
their sockets (page 6).
• Check that the HD15 video input connector
’
s pins are not bent or pushed in.
x
Problems caused by the connected computer or other equipment
• The computer is in power saving mode. Try pressing an y ke y on the computer ke yboard or
moving the mouse.
• Check that the computer
’
s power is “on.”
• Check that the graphic board is completely seated in the proper bus slot.
If the OUT OF SCAN RANGE
message appears on the screen
x
Problems caused by the connected computer or other equipment
• Check that the video frequency range is within that speci
fied for the monitor
. If you
replaced an old monitor with this monitor, reconnect the old monitor and adjust the
frequency range to the following.
Horizontal: 30 – 96 kHz
Vertical: 48 – 120 Hz
If no message is displayed and the
!
(power) indicator is green or flashing
orange
• Use the Self-diagnosis function (page 15).
If using a Macintosh system • Check that the Macintosh adapter (not supplied) and the video signal cable are properly
connected (page 6).
Picture flickers, bounces,
oscillates, or is scrambled
• Isolate and eliminate any potential sources of electric or magnetic
fields such as other
monitors, laser printers, electric fans,
fluorescent lighting, or tele
visions.
• Move the monitor away from power lines or place a magnetic shield near the monitor.
• Try plugging the monitor into a different AC outlet, preferably on a different circuit.
• Try turning the monitor 90
°
to the left or right.
x
Problems caused by the connected computer or other equipment
• Check your graphics board manual for the proper monitor setting.
• Confirm that the graphics mode (VESA, etc.) and the frequency of the input signal are
supported by this monitor (Appendix). Even if the frequency is within the proper range,
some video boards may have a sync pulse that is too narrow for the monitor to sync
correctly.
• Adjust the computer
’
s refresh rate (vertical frequency) to obtain the best possible picture.
Picture is fuzzy
• Adjust the brightness and contrast (page 9).
• Degauss the monitor* (page 11).
• Select CANCEL MOIRE and adjust the moire cancellation effect (page 11).
Picture is ghosting
• Eliminate the use of video cable extensions and/or video switch boxes.
• Check that all plugs are
firmly seated in their sockets.
Picture is not centered or sized
properly
• Adjust the size (page 10) or centering (page 10). Note that some video modes do not
fill
the screen to the edges.
Edges of the image are curved
• Adjust the geometry (page 10).
Wavy or elliptical pattern (moire)
is visible
• Select CANCEL MOIRE and adjust the moire cancellation effect (page 11).
x
Problems caused by the connected computer or other equipment
• Change your desktop pattern.
(Continued)
1-5
14
* If a second degauss cycle is needed, allow a minimum interval of 20 minutes for the best result. A humming noise may be heard,
but this is not a
malfunction.
Displaying this monitor
’s name, serial number,
and date of manufacture
1
Press the center of the control button.
The main MENU appears on the screen.
2
Move the control button
m
/
M
to highlight
LANGUAGE/INFORMATION and press the center
of the control button.
The LANGUAGE/INFORMATION menu appears on the
screen.
3
Move the control button
m
/
M
to select .
This monitor’s information menu appears on the screen.
If the problem persists, call your authorized Sony dealer and give
the following information.
• Model name: HMD-A420
• Serial number
• Name and specifications of your computer and graphics board.
Color is not uniform
• Degauss the monitor* (page 11). If you place equipment that generates a magnetic
field,
such as a speaker, near the monitor, or if you change the direction the monitor faces, color
may lose uniformity.
White does not look white
• Adjust the color temperature (page 11).
Letters and lines show red or blue
shadows at the edges
• Adjust the convergence (page 10).
USB peripherals do not function
• Check that the appropriate USB connectors are securely connected (page 7).
• Check that the
!
(power) switch is in the
“on” position.
x
Problems caused by the connected computer or other equipment
• Check that the power of any self-powered USB compliant peripheral devices is “on.”
• Install the latest version of the device driver on your computer. Contact your device’s
manufacturer for information about the appropriate device driver.
• If your USB compliant keyboard or mouse does not function, connect them directly to
your computer, reboot your computer, and make any necessary adjustments to the USB
settings. Then reconnect the keyboard or mouse to the monitor. If you connect a ke yboard
or mouse to the USB connectors and then boot your computer for the
first time, the
peripheral devices may not function.
• For customers using Windows 95
1. Right-click on My Computer and select Properties.
2. Click on the Device Manager tab. Scroll down and select Universal Serial Bus
Controller.
If Universal Serial Bus Controller does not appear, you need to load a USB supplement
disk. Contact your computer
’
s manufacturer for more information about obtaining a
USB supplement disk.
3. Select Generic USB Device from the USB controller list and click on Properties.
4. If there is a check in the box next to “Disable in this hardware pro
file,
” remove the
check.
5. Click on Refresh.
A hum is heard right after the
power is turned on
• This is the sound of the auto-degauss cycle. When the power is turned on, the monitor is
automatically degaussed for five seconds.
Symptom Check these items
MODEL :HMD -A420
SERI AL: 12345678
MANUFACTURED : 2 0 0 0 - 5 2
SELECT EXI T
LANGUAGE/ I NFOR
M
A
T
I
O
N
Example
15
GB
Self-diagnosis function
This monitor is equipped with a self-diagnosis function. If there is
a problem with your monitor or computer, the screen will go
blank and the
!
(power) indicator will either light up green or
flash orange. If the
!
(power) indicator is lit in orange, the
computer is in power saving mode. Try pressing any key on the
keyboard.
If the
!
(power) indicator is green
1
Disconnect the video input cable or turn off the
connected computer.
2
Press the
!
(power) button twice to turn the monitor
off and then on.
3
Move the control button
,
for 2 seconds before the
monitor enters power saving mode.
If all four color bars appear (white, red, green, blue), the monitor
is working properly. Reconnect the video input cable and check
the condition of your computer.
If the color bars do not appear, there is a potential monitor failure.
Inform your authorized Sony dealer of the monitor
’s condition.
If the
!
(power) indicator is flashing orange
Press the
!
(power) button twice to turn the monitor off
and then on.
If the
!
(power) indicator lights up green, the monitor is working
properly.
If the
!
(power) indicator is still flashing, there is a potential
monitor failure. Count the number of seconds between orange
flashes of the
!
(power) indicator and inform your authorized
Sony dealer of the monitor’s condition. Be sure to note the model
name and serial number of your monitor. Also note the make and
model of your computer and video board.
Specifications
CRT 0.24 mm aperture grille pitch (center)
19 inches measured diagonally
90-degree deflection
FD Trinitron
Viewable image size Approx. 365
×
274 mm (w/h)
(14
3
/
8
×
10
7
/
8
inches)
18.0" viewing image
Resolution
Maximum Horizontal: 1800 dots
Vertical: 1440 lines
Recommended Horizontal: 1280 dots
Vertical: 1024 lines
Standard image area Approx. 352
×
264 mm (w/h)
(13
7
/
8
×
10
1
/
2
inches)
Deflection frequency* Horizontal: 30 to 96 kHz
Vertical: 48 to 120 Hz
AC input voltage/current 100 – 240 V, 50 – 60 Hz, 2.3 – 1.0 A
Power consumption Max. 150 W
Dimensions
Approx. 497
×
458
×
469 mm
(w/h/d)
(19
5
/
8
×
18
1
/
8
×
18
1
/
2
inches)
Mass Approx. 26 kg (57 lb 5 oz)
Plug and Play DDC1/DDC2B/DDC2Bi
* Recommended horizontal and vertical timing condition
• Horizontal sync width should be more than 1.0
µsec.
• Horizontal blanking width should be more than 3.0
µsec.
• Vertical blanking width should be more than 500
µsec.
Design and specifications are subject to change without notice.
MENU
!
(power) indicator
MENU
1-6
HMD-A420
2-1. BUCKET ASSEMBLY REMOVAL
SECTION 2
DISASSEMBLY
2
Bucket assembly
1
Two screws
(+BVTP 4 x 16)
2-2. A BOARD REMOVAL
CN306
1
Two screws
(+BVTP 4 x 16)
CN305
CN307
CN309
CN302
CN303
CN301
CN310
GND
2-1
CN304
1
A board
2-3. D BOARD REMOVAL
4
3
Screw
(+BVTT 4 X 8)
2
A board
CN304
CN302
CN309
CN307
CN306
CN305
CN303
5
I/O Cable
Cable stopper
CN301
11
Two screws
(+BVTT 4 X 8)
GND
CN310
6
Two screws
(+BVTP 3 X 12)
Connector (2P)
9
Cable holder
8
Cable bracket
7
Screw (+BVTP 3 X 12)
P4
HMD-A420
13
Bottom assembly
1
Anode cap
(Refer to page 2-3)
17
Side sield (R)
22
D board
P2
20
Eight screws
(+BV 3 X 12)
12
Claw
19
Side sield (L)
18
Two screws
(+BV 3 X 12)
14
Screw
(+BVTT 4 X 8)
16
Two screws
(+BV 3 X 12)
15
Harnes
2-2
21
Two claws
HMD-A420
2-4. SERVICE POSITION
D board
A board
• REMOVAL OF ANODE-CAP
NOTE: Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield or carbon painted on the CRT, after
removing the anode.
• REMOVING PROCEDURES
c
b
a
Anode Button
1 Turn up one side of the rubber cap in
the direction indicated by the arrow A.
2 Using a thumb pull up the rubber cap
firmly in the direction indicated by the
arrow B.
• HOW TO HANDLE AN ANODE-CAP
1 Don’t scratch the surface of anode-caps with sharp shaped
material!
2 Don’t press the rubber hardly not to damage inside of anode-
caps!
A material fitting called as shatter-hook terminal is built in the
rubber.
3 Don’t turn the foot of rubber over hardly!
The shatter-hook terminal will stick out or damage the rubber.
2-3
3 When one side of the rubber cap is
separated from the anode button, the
anode-cap can be removed by turning
up the rubber cap and pulling up it in the
direction of the arrow C.
HMD-A420
2-5. H BOARD REMOVAL
Cushion
2-6. PICTURE TUBE REMOVAL
2
Menu knob
2
A board
1
Three screws
(+BVTP 3 X 12)
3
H board
3
Screw
(+BVTP 4 X 16)
4
Four tapping screws (5)
8
Deflection yoke
10
Picture tube
6
Bottom assembly
3
7
Neck assembly
P2
P4
Connector (2P)
5
Claw
Screw
(+BVTP 4 X 16)
1
Anode cap
(Refer to page 2-3)
2-4
9
Bezel assembly
HMD-A420
2-7. HARNESS LOCATION
Picture tube
Power switch
P703
P4
P2
H board
P701
P702
AC inlet
CN604
CN310
CN902
CN301
CN306
CN603
CN903
CN305
CN303
CN602
CN901
CN307
CN505
CN501
CN309
CN506
CN502
CN300
D board
CN4001
FBT
CN304
CN302
A board
2-5
SECTION 3
SAFETY RELATED ADJUSTMENT
HMD-A420
When replacing parts shown in the table below, the
following operational checks must be performed as a
safety precaution against X-ray emissions from the unit.
Part Replaced ( ] )
HV Regulator
Circuit
HV HOLD
DOWN Circuit
Beam Current
Protector Circuit
Allow the unit to warm up for one minute prior to checking
the following conditions:
a) HV Regulator Check
1) Input white cross hatch signal. (fH = 69 kHz)
2) CONT maximum and BRT center
3) Cut off Screen VR (G2).
4) Input voltage: 120 ± 2 VAC
5) Confirm that the voltage is within the voltage range
shown below.
Standard voltage: 26.9 KV ± 0.4 KV
6) When replacing components identified by ], make sure
to recheck the High Voltage.
7) Verify the High Voltage as shown above (26.9 KV ± 0.4
KV) is within specification. If not, set H. SIZE data at
minimum (-127) and then adjust RV501 on "D" Board.
D board IC502, R515, T501 (FBT)
• Mounted D Board
D board D538, IC901, Q534, R521,
R551, R552, R598, R599,
T501 (FBT)
• Mounted D Board
D board IC901, R911, R949, R950,
T501 (FBT)
• Mounted D Board
8) After adjusting the High Voltage within specification,
put the RV cover on RV501 as shown below and apply
sufficient amount of RTV around RV501.
b) HV Protector Circuit Check
1) Confirm that the voltage between cathode of D517 an
GND is more than 27.5 VDC.
2) Using an external DC Power supply, apply the voltage
shown below between cathode of D517 on "D" and
GND, and confirm that the HV Hold-Down circuit
works. (Raster disappears) Apply DC Voltage: Less than
35.8 VDC.
Check Condition
• Input voltage : 120 ± 2 VAC
• Input signal : (fH = 69 kHz), White Cross Hatch
• Controls : CONT (max) & BRT (center)
• B+ Voltage : 179 ± 3.0 VDC
c) Beam Protector Check (Software logic)
1) Using an external current source, apply < 1.55mA
between pin qa of FBT (T501) and GND, and confirm
that the raster fades out.
Check Condition
• Input voltage : 120 ± 2 VAC
• Input signal : (fH = 69 kHz), White Cross Hatch
• Controls : CONT (max) & BRT (center)
RV501
d) B+ Voltage Check
1) Input white cross hatch (fH = 69 kHz) signal.
2) CONT (max) & BRT (center)
3) Input voltage: 120 ± 2 VAC
Note:Use NF power supply or make sure that distortion
factor is 3% or less.
4) Confirm that the voltage is within the voltage range
shown below.
Standard voltage: 179 ± 3.0 VDC
3-1
HMD-A420
SECTION 4
#3
ADJUSTMENTS
Connect the communication cable of the computer to the connector located on the monitor. Run the service software and then follow
the instruction.
I2C Interface Card
2
I
C Interface Cable
HD15 Connector Adapter
Computer
as a Jig
• Landing Fine Adjustment
1. Put the set inside the Helmholtz coil.
2. Set TLH plate to zero position.
3. Input the single green signal.
4. Demagnetize the CRT surface with the hand degausser , and
perform auto degaussing.
5. Attach the wobbling coil to the designated part of the CRT
neck.
6. Attach the sensor of the landing adjustment unit on the CRT
surface.
Purity magnet position
7. Adjust the DY position and purity, and the DY tilt.
8. Fasten DY with screw.
+2
Note: Torque 20
kgcm
-1
9. Adjust top and bottom pins by pitching DY up and down
with two wedges.
Also leave the yaw of DY to physical center position with
Another two wedes.
Video Cable
L/D control specification
± 5 ± 7 ± 5
± 5 ± 7 ± 5
± 5 ± 7 ± 5
(µm)
10. If the corner landing is out of specification, put a disk magnet for the landing correction.
11. Perform auto degauss in case disk magnets are used.
12. Remove the sensor and wobbling coil.
13. Fix purity magnet on DY with UL black tape.
a
cd
b
“a” and “b” must be equal, and
“c” and “d” must be equal.
<How to drive in wedges>
4-1
HMD-A420
A
312 mm
B
MODE All mode
234 mm
a 1.5 mm
b 1.5 mm
a
B
A
b
• Convergence Rough Adjustment
1. Enter the crosshatch signal.
2. Recheck focus and readjust when focus was worse.
3. Adjust roughly H. STAT and V. STAT convergence by 4
pole magnet.
4. Adjust roughly HMC and VMC by 6 pole magnet.
• Convergence Adjustment
1. Open H and V Stat by 4 pole magnet.
2. Adjust 6 pole magnet perform HMC and VMC.
3. Adjust 4 pole magnet close both Stat of R.G.B just overlap
each other Horizontal and Vertical.
4. Adjust TLH for side MC by TLH magnet when R or B is in
the opposite direction.
5. Adjust XCV to correct Vertical cross MC.
6. Adjust XBV to correct Vertical bow MC.
7. Adjust TLV to corect Vertical tilt MC.
8. Adjust YCH to correct top and bottom Horizontal cross MC.
9. Adjust YBH to correct top and bottom Horizontal bow MC.
10. Using permalloys to correct MC of the cornters.
11. Check convergence for whole screen. If necessary, perform
step from 3-9 and correct with permalloys.
12. Paint lock 4 pole magnet, 6 poles magnets, XBV reactor
XCV corrector and TLH corrector handle.
6Pole Mg
Purity Mg.
DY
CRT
YCH
XCV
YV
TLH
• Convergence Specification
B
A
MODE All mode
0.30 mm
A
0.35 mm
B
• White Balance Adjustment Specification
(1) 9300K (2) 6500K
x = 0.283 ± 0.01 x = 0.313 ± 0.01
y = 0.298 ± 0.01 y = 0.329 ± 0.01
(2) 5000K
x = 0.346 ± 0.01
y = 0.359 ± 0.01
• Vertical and Horizontal Position and Size
Specification
4Pole Mg
XCV YCH
B
R
R
B
B
R
RB
TLHTLV
RR
BB
XBV
R
B
YBH
R
B
• Focus adjustment
Adjust the focus volume 1 and 2 for the optimum focus.
Focus 1
(V)
Focus 2
(H)
FBT
4-2
5-1. BLOCK DIAGRAMS
SIGNAL-IN
HD15
PIG-TAIL
15
10
414
313
212
1511
TO D BOARD
CN902
TO D BOARD
CN901
TO D BOARD
CN603
9
8
7
6
A
B
C
CN301
RED
GREEN
BLUE
H-IN
V-IN
CN306
PC DET
DDC SDA
DDC SCL
CN305
DDC SCL
DDC SDA
PCDET
V-IN
H-IN
CN302
CLAMP
SDA/I
SCL/I
H_RTN
V_RTN
G1
CN303
ABL
ABL
+5V
+5V
+6.3V
+6.3V
+12V
+12V
+81V
+81V
SECTION 5
DIAGRAMS
(VIDEO, RGB OUT)
A
IC001 PRE AMP,OSD MIX
2
11
19
21
20
27
15
6
R IN
G IN
B IN
CLAMP
SDA
SCL
BLK
ABL IN
5
7
9
1
2
IC009
ROM
7
4
3
2
6
5
4
3
1
7
8
9
3
4
5
5
5
6
6
4
4
3
3
1
1
+5V
+6.3V
+12V
+81V
VCLK
5
SDA
6
SCL
CLAMP AMP
Q001,002
R OUT
G OUT
B OUT
DA4
DA3
DA2
DA1
OSDR
OSDG
OSDB
OSD BLKIN
35
32
29
23
24
25
26
4
9
13
1
11
6
5
9
8
B CUT-OFF
Q301
G CUT-OFF
Q201
R CUT-OFF
Q101
IC004 AMP
–
+
13
15
17
12
6
5
IC002
RGB OUT
7
IC003 OSD
P1/R
P3/G
P5/B
P0/BK0
SIN
SCK
R VOUT2R VIN2
G VOUT3G VIN3
B VOUT1B VIN1
3
5
1
G2 CONT
Q004
D305
D205
D105
R.G.B
CN309
1.2kV
1
CRT
G2
G1
TO
HV
D BOARD
FBT
FV2
TO
D BOARD
FBT
FV1
TO
D BOARD
FBT
TO D BOARD
CN504
E
TO D BOARD
CN903
D
P701
MENU
ORANGE/LED
GREEN/LED
(USER CONTROL)
H
1
2
3
LED701
POWER
SW701
MENU
H SYNC
BUFF
Q003
V SYNC
BUFF
Q005
18
HOR
19
VERT
P2
14
P4
16
P6
9
P7
10
B-SS3545<AEP>-BD1-EPS05
CN304
CS0
2
CS1
1
CS2
4
3
CS3
5-1 5-2
F
TO D BOARD
CN502
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