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GDM-5402
(INPUT 1:2 / HD15:HD15)
SERVICE MANUAL
US Model Canadian Model AEP Model
Chassis No. SCC-L22M-A
G1 CHASSIS
SPECIFICATIONS 0.24 mm aperture grille pitch 21 inches measured diagonally 90-degree deflection FD Trinitron Viewable image size Approx. 403.8 × 302.2 mm (w/h) (16 × 12 inches) 19.8" viewing image Recommended resolution Horizontal: 1600 dots Vertical: 1280 lines Standard image area Approx. 388 × 291 mm (w/h) (15 3/8 × 11 1/2 inches) or Approx. 364 × 291 mm (w/h) (14 3/8 × 11 1/2 inches) Deflection frequency* Horizontal: 30 to 121 kHz Vertical: 48 to 160 Hz AC input voltage/current 100 to 240 V, 50 60 Hz, 2.0 1.0 A CRT Power consumption Dimensions Mass Plug and Play Approx. 145 W Approx. 498 × 491 × 478 mm (w/h/d) (19 5/8 × 19 3/8 × 18 7/8 inches) Approx. 32 kg (70 lb 9 oz) DDC1/2B/2Bi, GTF**
* Recommended horizontal and vertical timing condition · Horizontal sync width duty should be more than 4.8% of total horizontal time or 0.8 µs, whichever is larger. · Horizontal blanking width should be more than 2.3 µsec. · Vertical blanking width should be more than 450 µsec. ** If the input signal is Generalized Timing Formula (GTF) compliant, the GTF feature of the monitor will automatically provide an optimal image for the screen. Design and specifications are subject to change without notice.
COLOR GRAPHIC DISPLAY
GDM-5402
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
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. 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 ¡ 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.
0.15 µF
1.5 k
AC Voltmeter (0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
CAUTION ON DAS (ECS) CONNECTOR
· The connector for DAS (ECS) adjustment is provided inside the cover shown below. Be careful with an electrical shock when connecting the connector with the power supplied. Also, return the removed cover to the home position.
Rear side
Cover ECS
2
GDM-5402
POWER SAVING FUNCTION
This monitor meets the power-saving guidelines set by VESA, ENERGY STAR, and NUTEK. If the monitor is connected to a computer or video graphics board that is DPMS (Display Power Management Signaling) compliant, the monitor will automatically reduce power consumption in three stages as shown below. Power mode normal operation 1 standby 2 suspend (sleep)* 3 active off** (deep sleep)* power off Power consumption 145 W 100 W 15 W Approx. 1 W 0W 1 (power) indicator green green and orange alternate green and orange alternate orange off
* "Sleep" and "deep sleep" are power saving modes defined by the Environmental Protection Agency. ** When your computer enters a power saving mode, the input signal is cut and NO INPUT SIGNAL appears on the screen. After a few seconds, the monitor enters power saving mode.
DIAGNOSIS
This monitor is equipped with a self-diagnosis function. If there is a problem with your monitor or computer(s), the screen will go blank and the 1 (power) indicator will either light up green or flash orange. If the 1 (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 cables and check the condition of your computer(s). If the color bars do not appear, there is a potential monitor failure. Inform your service representative of the monitor's condition.
If the 1 (power) indicator is flashing orange
1 2
1 (power) indicator
Press the 1 (power) button twice to turn the monitor off and then on. If the 1 (power) indicator lights up green, the monitor is working properly. If the 1 (power) indicator is still flashing, there is a potential monitor failure. Count the number of seconds between orange flashes of the 1 (power) indicator and inform your service representative 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.
If the 1 (power) indicator is green 1 Remove any plugs from the video input 1 and 2
connectors, or turn off the connected computer(s).
2 Press the 1 (power) button twice to turn the monitor
off and then on.
3 Press the , button for 2 seconds before the
monitor enters power saving mode.
3
GDM-5402
TIMING SPECIFICATION
MODE AT PRODUCTION RESOLUTION CLOCK -- HORIZONTAL -- H-FREQ 31.469 kHz usec 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 NO YES N/N NO NON INT NO YES N/N NO NON INT NO YES N/P NO NON INT NO YES P/P NO NON INT NO YES P/P NO NON INT NO YES P/P NO NON INT 59.940 Hz lines 525 45 10 2 33 480 85.008 Hz lines 509 29 1 3 25 480 70.087 Hz lines 449 49 13 2 34 400 85.061 Hz lines 631 31 1 3 27 600 75.029 Hz lines 800 32 1 3 28 768 84.997 Hz lines 808 40 1 3 36 768 31.778 6.356 0.636 3.813 1.907 25.422 43.269 kHz usec 23.111 5.333 1.556 1.556 2.222 17.778 31.469 kHz usec 31.777 6.355 0.636 3.813 1.907 25.422 53.674 kHz usec 18.631 4.409 0.569 1.138 2.702 14.222 60.023 kHz usec 16.660 3.657 0.203 1.219 2.235 13.003 68.677 kHz usec 14.561 3.725 0.508 1.016 2.201 10.836 MODE 1 640 X 480 25.175 MHz MODE 2 640 X 480 36.000 MHz MODE 3 720 X 400 28.322 MHz MODE 4 800 X 600 56.250 MHz MODE 5 1024 X 768 78.750 MHz MODE 6 1024 X 768 94.500 MHz
MODE AT PRODUCTION RESOLUTION CLOCK -- HORIZONTAL -- H-FREQ
MODE 7 1280 X 1024 135.000 MHz
MODE 8 1280 X 1024 157.500 MHz
MODE 9 1600 X 1200 202.500 MHz
MODE 10 1600 X 1200 229.500 MHz
MODE 11 1800 X 1440 278.658 MHz
MODE 12 1920 X 1440 297.000 MHz
79.976 kHz usec
91.146 kHz usec 10.971 2.844 0.406 1.016 1.422 8.127
93.750 kHz usec 10.667 2.765 0.316 0.948 1.501 7.901
106.250 kHz usec 9.412 2.440 0.279 0.837 1.325 6.972
112.725 kHz usec 8.871 2.412 0.488 0.718 1.206 6.460
112.500 kHz
H. TOTAL H. BLK H. FP H. SYNC H. BP H. ACTIV -- VERTICAL -- V. FREQ (HZ)
12.504 3.022 0.119 1.067 1.837 9.481
8.889 2.424 0.485 0.754 1.185 6.465
75.025 Hz lines
85.024 Hz lines 1072 48 1 3 44 1024
75.000 Hz lines 1250 50 1 3 46 1200
85.000 Hz lines 1250 50 1 3 46 1200
75.000 Hz lines 1503 63 1 3 59 1440
75.000 Hz lines 1500 60 1 3 56 1440
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
1066 42 1 3 38 1024
NO YES P/P NO NON INT
NO YES P/P NO NON INT
NO YES P/P NO NON INT
NO YES P/P NO NON INT
NO YES P/P NO NON INT
NO YES N/N NO NON INT 99.11.05 VER.
4
GDM-5402
TABLE OF CONTENTS
Section Title Page
1. GENERAL ................................................................. 1-1 2. DISASSEMBLY
Cabinet Removal ............................................... D Board Removal .............................................. G Board Removal .............................................. A Board, I/O Terminal Board Assembly Removal ............................................................. 2-5. N Board Removal .............................................. 2-6. Service Position .................................................. 2-7. Bezel Assembly, H Board Removal .................. 2-8. J Board Removal ............................................... 2-9. Picture Tube Removal ....................................... 2-10. Harness Location ............................................... 2-1. 2-2. 2-3. 2-4. 2-1 2-1 2-2 2-2 2-3 2-3 2-4 2-4 2-5 2-6
3. SAFETY RELATED ADJUSTMENT ............. 3-1 4. ADJUSTMENTS ..................................................... 4-1 5. DIAGRAMS
5-1. 5-2. 5-3. 5-4. (1) (2) (3) (4) (5) 5-5. Block Diagrams .................................................. Frame Schematic Diagram ................................. Circuit Boards Location ..................................... Schematic Diagrams and Printed Wiring Boards ................................................................. Schematic Diagram of A Board ........................ Schematic Diagrams of H, J Boards ................. Schematic Diagram of D Board ........................ Schematic Diagrams of N (a, b, c) Board Schematic Diagram of G Board ........................ Semiconductors ................................................. 5-1 5-7 5-9 5-9 5-11 5-17 5-19 5-23 5-31 5-35
6. EXPLODED VIEWS
6-1. 6-2. 6-3. Chassis ............................................................... 6-1 Picture Tube ...................................................... 6-2 Packing Materials ............................................... 6-3
7. ELECTRICAL PARTS LIST ............................ 7-1
Note: Hand degauss must be used on stand-by or power-off condition. This model has an automatic earth magnetism correction function by using an earth magnetism sensor and a LCC coil. When using a hand degauss while monitor (LCC coil) is being operated, it sometimes gets magnetized, and the system may not work properly as a result.
5
The operating instructions mentioned here are partial abstracts from the Operating Instruction Manual. The page numbers of the Operating Instruction Manual remain as in the manual.
SECTION 1 GENERAL
Precautions
Warning on power connections
Use an appropriate power cord for your local power supply.
Example of plug types
Use of the tilt-swivel
This monitor can be adjusted within the angles shown below. To turn the monitor vertically or horizontally, hold it at the bottom with both hands.
Identifying parts and controls
See the pages in parentheses for further details.
Front
90° 15° 90°
Rear
AC IN
(HD15) 1
(HD15) 2
for 100 to 120 V AC
for 200 to 240 V AC
for 240 V AC only
5°
1 2
· 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 2 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. The equipment should be installed near an easily accessible outlet.
1 0 (reset) button (page 14) This button resets the adjustments to the factory settings. 2 ASC (auto sizing and centering) button (page 7) This button automatically adjusts the size and centering of the picture.
9 Video input 1 connector (HD15) (y1) (page 6) This connector inputs RGB video signals (0.700 Vp-p, positive) and sync signals.
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
3 t (input) switch (page 7) This switch selects the INPUT 1 (video input 1 connector: y1) or INPUT 2 (video input 2 connector: y2) video input signal. 4 (brightness) m/M buttons (page 9) These buttons display the BRIGHTNESS/CONTRAST menu and function as the m/M buttons when selecting menu items. (menu) button (page 9) This button displays the main menu.
5 4 3 2 1 10 9 8 7 6 15 14 13 12 11
US
1-1
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Signal Red Green (Sync on Green) Blue ID (Ground) DDC Ground* Red Ground Green Ground Blue Ground DDC + 5V* Ground ID (Ground) Bi-Directional Data (SDA)* H. Sync V. Sync Data Clock (SCL)*
5
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.
6 6 (contrast)
Transportation
When you transport this monitor for repair or shipment, use the original carton and packing materials.
* DDC (Display Data Channel) is a standard of VESA.
q; Video input 2 connector (HD15) (y2) (page 6) This connector inputs RGB video signals (0.700 Vp-p, positive) and sync signals. Pin assignment is the same as 9 described above.
4
5
Setup
This monitor works with platforms running at horizontal frequencies between 30 and 121 kHz.
Step 2: Connect the power cord
With the monitor and computer switched off, first connect the proper power cord for your local power supply to the monitor, then connect it to a power outlet.
Selecting the on-screen menu language (LANGUAGE)
English, French, German, Spanish, Italian, Dutch, Swedish, Russian and Japanese versions of the on-screen menus are available. The default setting is English.
Selecting the input signal
You can connect two computers to this monitor using the video input 1 (y1) and video input 2 (y2) connectors. To select one of the two computers, use the t switch. Move the t switch. The selected connector appears on the screen for 3 seconds.
Step 1: Connect your monitor to your computer
With the monitor and computer switched off, connect the video signal cable to the video input connector of the monitor and to the video output of the computer.
to AC IN To a computer with an HD15 video output forward side
AC IN
1 Press the
(HD15) 1 (HD15) 2
button. See page 9 for more information on using the
MENU
OK
button.
1
2
b
to a power outlet
EX I T S I Z E / CENT ER GEOME TRY CONVERGENCE SCREEN COLOR L ANGUAGE OP T I ON
"INPUT 1" (video input 1 connector: y1) or "INPUT 2" (video input 2 connector: y2) appears on the screen.
Note If no signal is input to the selected connector, NO INPUT SIGNAL appears on the screen. After a few seconds, the monitor enters the power saving mode. If this happens, switch to the other connector.
rear side
AC IN
power cord
(HD15) 1 (HD15) 2
2 Press the m/M buttons to highlight
forward side
LANGUAGE and press the button again. See page 9 for more information on using the m/M buttons.
L ANGUAGE ENGL I SH FRANÇA I S DEUT SCH ESPAÑOL I T A L I ANO NEDER L ANDS SVENSKA
rear side
Step 3: Turn on the monitor and computer
First turn on the monitor, then turn on the computer.
Automatically sizing and centering the picture
You can easily adjust the picture to fill the screen by pressing the (auto sizing and centering) button. Press the button. The picture automatically fills the screen.
b
US
1-2
To a computer with an HD15 video output
The installation of your monitor is complete. If necessary, use the monitor's controls to adjust the picture.
Notes · Do not touch the pins of the video signal cable connector as this might bend the pins. · When connecting the video signal cable, check the alignment of the HD15 connector. Do not force the connector in the wrong way or the pins might bend.
3 Press the m/M buttons to select a language.
· · · · · · · · · ENGLISH FRANÇAIS: French DEUTSCH: German ESPAÑOL: Spanish ITALIANO: Italian NEDERLANDS: Dutch SVENSKA: Swedish : Russian : Japanese
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, follow the onscreen messages (page 15). · 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 30 121 kHz, and the vertical frequency is between 48 160 Hz. For more information about the on-screen messages, see "Trouble symptoms and remedies" on page 16.
To close the menu Press the 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 Press the 0 (reset) button while the LANGUAGE menu is displayed on the screen.
Notes · This function is intended for use with a computer that provides a fullscreen picture. It may not work properly if the background color is dark or if the input picture does not fill the screen to the edges. · Pictures with an aspect ratio of 5:4 (resolution: 1280 × 1024, 1600 × 1280) are displayed at their actual resolution and do not fill the screen to the edges. · The displayed image moves for a few seconds when the button is pressed. This is not a malfunction.
6
7
Customizing Your Monitor
You can make numerous adjustments to your monitor using the on-screen menu.
7 LANGUAGE (page 7) Select LANGUAGE to choose the on-screen menu's language.
L ANGUAGE ENGL I SH FRANÇA I S DEUT SCH ESPAÑOL I T A L I ANO NEDER L ANDS SVENSKA
x Using the
Press the screen.
, m/M, and button to display the main MENU on your
1 Display the main MENU.
Adjusting the brightness and contrast
Brightness and contrast adjustments are made using a separate BRIGHTNESS/CONTRAST menu. These settings are stored in memory for the signals from the currently selected input connector.
Navigating the menu
Press the button to display the main MENU on your screen.
MENU
OK
EX I T S I Z E / CENT ER GEOME TRY CONVERGENCE SCREEN COLOR L ANGUAGE OP T I ON
8 OPTION (page 13) Select OPTION to adjust the monitor's options. The options include: · degaussing the screen · changing the on-screen menu position · locking the controls
OPT I ON
DEGAUS S
1 Press either one of the 2 Select the menu you want to adjust.
ON
Press the m/M buttons to highlight the desired menu. Press the button to select the menu item.
(brightness) m/M or 6 (contrast) BR I GHTNESS / CON TRAS T
26
26
Use the m/M and buttons to select one of the following menus. See page 9 for more information on using the m/M and buttons. 1 EXIT Select EXIT to close the menu. 2 SIZE/CENTER (page 10) Selects the SIZE/CENTER menu to adjust the picture's size, centering or zoom.
S I ZE / CENTER
x Displaying the current input signal
The horizontal and vertical frequencies of the current input signal are displayed in the main MENU. If the signal matches one of this monitor's factory preset modes, the resolution is also displayed.
MENU
OK
b
2 Press the 3 Adjust the menu.
Press the m/M buttons to select the desired adjustment item. Press the
If you are using the sRGB mode
If you selected the sRGB mode in the COLOR menu, the following BRIGHTNESS/CONTRAST menu appears on the screen.
BR I GHTNESS / CON TRAS T
26
EX I T S I Z E / CENT ER GEOME TRY CONVERGENCE SCREEN COLOR L ANGUAGE OP T I ON
b
the resolution of the current input signal
US
3 GEOMETRY (page 10) Select the GEOMETRY menu to adjust the picture's rotation and shape.
GEOMETRY
the horizontal and vertical frequencies of the current input signal
26
6 8 . 7 kHz / 8 5Hz 1024x 768
56
76 : 56 76
4 Close the menu.
Press the 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.
s RGB
For more information about using the sRGB mode, see "Adjusting the color of the picture (COLOR)" on page 12. The menu automatically disappears after about 3 seconds.
1-3
4 CONVERGENCE (page 11) Select the CONVERGENCE menu to adjust the picture's horizontal and vertical convergence.
TOP BOT
CONVERGENCE
26
5 SCREEN (page 11) Select the SCREEN menu to adjust the picture's quality. You can adjust the landing and moire cancellation effect. 6 COLOR (page 12) 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.
x Resetting the adjustments
SCREEN
L AND I NG
Press the 0 (reset) button. See page 14 for more information on resetting the adjustments.
26
COLOR EASY 5 0 0 0K EXPERT 6 5 0 0K COLOR RE TURN s RG B 9 3 0 0K 5 0 0 0K ON
8
9
Adjusting the size of the picture (SIZE/CENTER)
This setting is stored in memory for the current input signal.
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.
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.
Adjusting the quality of the picture (SCREEN)
The SCREEN settings allow you to adjust the quality of the picture by controlling the moire and landing. · If the color is irregular at the corners of the screen, adjust the landing. · If elliptical or wavy patterns appear on the screen, cancel the moire. The CANCEL MOIRE and MOIRE ADJUST settings are stored in memory for the current input signal. All other settings are stored in memory for all input signals.
1 Press the
button. The main MENU appears on the screen.
2 Press the m/M buttons to highlight
SIZE/CENTER and press the button again. The SIZE/CENTER menu appears on the screen. for horizontal adjustment, or for vertical adjustment. Then press the
1 Press the
button. The main MENU appears on the screen. GEOMETRY and press the button again. The GEOMETRY menu appears on the screen.
1 Press the
button. The main MENU appears on the screen.
3 First press the m/M buttons to select
2 Press the m/M buttons to highlight
2 Press the m/M buttons to highlight
CONVERGENCE and press the button again. The CONVERGENCE menu appears on the screen.
1 Press the
button. The main MENU appears on the screen. SCREEN and
Adjusting the centering of the picture (SIZE/CENTER)
This setting is stored in memory for the current input signal.
3 First press the m/M buttons to select the desired
adjustment item. Then press the Select To horizontally shift red or blue shadows vertically shift red or blue shadows TOP V CONVER TOP BOT V CONVER BOTTOM vertically shift red or blue shadows at the top of the screen vertically shift red or blue shadows at the bottom of the screen
2 Press the m/M buttons to highlight 3 First press the m/M buttons to select the desired
adjustment item. Then press the
3 First press the m/M buttons to select the desired
adjustment item. Then press the
1 Press the
button. The main MENU appears on the screen. SIZE/CENTER
2 Press the m/M buttons to highlight
shift the picture sides to the left or right adjust the picture width at the top of the screen shift the picture to the left or right at the top of the screen
and press the button again. The SIZE/CENTER menu appears on the screen.
US
1-4
3 First press the m/M buttons to select
for horizontal adjustment, or for vertical adjustment. Then press the
LANDING
Enlarging or reducing the picture (ZOOM)
This setting is stored in memory for the current input signal.
LANDING
CANCEL MOIRE*
1 Press the
button. The main MENU appears on the screen. SIZE/ CENTER and press the button again. The SIZE/CENTER menu appears on the screen.
MOIRE ADJUST
2 Press the m/M buttons to highlight
3 Press the m/M buttons to select
(zoom), and press the
· 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. Example of moire
Note Adjustment stops when either the horizontal or vertical size reaches its maximum or minimum value.
Note The picture may become fuzzy when CANCEL MOIRE is set to ON.
10
11
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 color to a printed picture's colors.
EXPERT mode
You can make additional adjustments to the color in greater detail by selecting the EXPERT mode.
COLOR EASY EXPERT s RG B 9 3 0 0K 50 50 50 50 50 50
sRGB mode
The sRGB color setting is an industry standard color space protocol designed to correlate the displayed and printed colors of sRGB compliant computer products. To adjust the colors to the sRGB profile, simply select the sRGB mode in the COLOR menu. However, in order to display the sRGB colors correctly (=2.2, 6500K), you must set your computer to the sRGB profile and adjust the brightness ( ) and contrast (6) to the numbers shown in the menu. For information on how to change the brightness ( ) and contrast (6), see page 9.
Note Your computer and other connected products (such as a printer), must be sRGB compliant.
COLOR EASY EXPERT : 7 6 FOR COLOR RE TURN s RG B s RG B ON
Additional settings (OPTION)
You can manually degauss (demagnetize) the monitor, change the menu position, and lock the controls.
1 Press the
button. The main MENU appears on the screen. COLOR and
5 0 0 0K 6 5 0 0K R B I AS G B I AS B B I AS R GA I N G GA I N B GA I N
1 Press the
button. The main MENU appears on the screen. OPTION and
2 Press the m/M buttons to highlight
press the button again. The OPTION menu appears on the screen.
2 Press the m/M buttons to highlight
press the button again. The COLOR menu appears on the screen.
1 Press the m/M buttons to select the color
temperature row 1, then press the
3 Press the m/M buttons to select the desired
adjustment item. Adjust the selected item according to the following instructions.
3 Press the mode. There are three types of adjustment modes, EASY, EXPERT and sRGB.
2 Press the m/M buttons to select the adjustment item
2, then press the
: 56
Degaussing the screen
The monitor is automatically demagnetized (degaussed) when the power is turned on. To manually degauss the monitor, first press the m/M buttons to select (DEGAUSS). Then press the , button. The screen is degaussed for about 2 seconds. If a second degauss cycle is needed, allow a minimum interval of 20 minutes for the best result.
4 First press the m/M buttons to select the desired
adjustment item. Then press the
3 Press the m/M buttons to select the adjustment item
3, then press the
Restoring the color from the EASY or sRGB menus
The colors of most display monitors tend to gradually lose brilliance over several years of service. The COLOR RETURN feature found in the EASY and sRGB menus allows you to restore the color to the original factory quality levels. The explanation below explains how to restore the monitor's color from the EASY menu.
EASY mode
COLOR EASY 5 0 0 0K EXPERT 6 5 0 0K COLOR RE TURN s RG B 9 3 0 0K 5 0 0 0K ON
Changing the menu's position
Change the menu's position if it is blocking an image on the screen. To change the menu's on-screen position, first press the m/M buttons to select (OSD H POSITION) for horizontal adjustment, or (OSD V POSITION) for vertical adjustment. Then press the
US
If you fine tune the color temperature, the new color settings are stored in memory for each of the three color temperatures and item 1 of the on-screen menu change as follows. · [5000K]t[ 1] · [6500K]t[ 2] · [9300K]t[ 3]
1 Press the mode.
2 First press the m/M buttons to select
1 First press the m/M buttons to select the color
temperature row 1, then press the
Setting the color temperature for each of the video input connectors
You can set the fine tuning of the color temperature in EASY or EXPERT mode for each of the video input connectors (INPUT 1 and INPUT 2).
(COLOR RETURN), then press the , button. The picture disappears while the color is being restored (about 2 seconds). After the color is restored, the picture reappears on the screen again.
1-5
2 If necessary, fine tune the color temperature.
First press the m/M buttons to select the color temperature adjustment row 2, then press the
Locking the controls
To protect adjustment data by locking the controls, first press the m/M buttons to select (CONTROL LOCK). Then press the , button to select ON. Only the 1 (power) switch, EXIT, and (CONTROL LOCK) of the OPTION menu will operate. If any other items are selected, the mark appears on the screen.
To cancel the control lock Repeat the procedure above and set
1 Select the same adjustment mode and color
temperature in the COLOR menu for both INPUT 1 and INPUT 2.
Notes · Before using this feature, the monitor must be in normal operation mode (green power indicator on) for at least 30 minutes. If the monitor goes into power saving mode, you must return the monitor to normal operation mode and wait for 30 minutes for the monitor to be ready. You may need to adjust your computer's power saving settings to keep the monitor in normal operation mode for the full 30 minutes. If the monitor is not ready, the following message will appear.
COLOR
(CONTROL LOCK) to OFF.
2 Fine tune the color temperature in each menu for
INPUT 1 and INPUT 2. The settings are stored in memory for each of the INPUT 1 and INPUT 2 connectors. For information on how to select the connector, see page 7.
EASY 5 0 0 0K
EXPERT 6 5 0 0K
s RG B 9 3 0 0K 5 0 0 0K
COLOR RE TURN AVA I L AB L E A F T ER WARM UP
· The monitor may gradually lose its ability to perform this function due to the natural aging of the picture tube.
12
13
Resetting the adjustments
This monitor has the following three reset methods. Use the 0 (reset) button to reset the adjustments.
If OUT OF SCAN RANGE appears on the screen
Technical Features
Power saving function
This monitor meets the power-saving guidelines set by VESA, ENERGY STAR, and NUTEK. If the monitor is connected to a computer or video graphics board that is DPMS (Display Power Management Signaling) compliant, the monitor will automatically reduce power consumption in three stages as shown below.
Troubleshooting
Before contacting technical support, refer to this section.
I NFORMA T I ON MON I TOR I S WORK I NG I NPUT 1 : 1 3 0 . 0 kHz / OUT OF SCAN RANGE CHANGE S I GNA L T I M I NG
7 5H z
If thin lines appear on your screen (damper wires)
The lines you are experiencing on your screen are normal for the Trinitron monitor and are not a malfunction. These are shadows from the damper wires used to stabilize the aperture grille and are most noticeable when the screen's background is light (usually white). 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.
WH I T E RED GREEN B L UE
Resetting a single adjustment item
Use the , m/M buttons to select the adjustment item you want to reset, and press the 0 (reset) button. Power mode normal operation 1 standby 2 suspend (sleep)* 3 active off** (deep sleep)* power off Power consumption 145 W 100 W 15 W Approx. 1 W 0W 1 (power) indicator green green and orange alternate green and orange alternate orange off
1 The selected connector and the frequencies of the current input signal This message shows the currently selected connector (INPUT 1 or INPUT 2). If the monitor recognizes the frequencies of the current input signal, the horizontal and vertical frequencies are also displayed. 2 The input signal condition OUT OF SCAN RANGE This indicates that the input signal is not supported by the monitor's specifications. 3 The remedies CHANGE SIGNAL TIMING appears on the screen. If you are replacing an old monitor with this monitor, reconnect the old monitor. Then adjust the computer's graphic board to that the horizontal frequency is between 30 - 121 kHz, and the vertical frequency is between 48 - 160 Hz. For more information, see "Trouble symptoms and remedies" on page 16.
Resetting all of the adjustment data for the current input signal
Press the 0 (reset) button when no menu is displayed on the screen. Note that the following items are not reset by this method: · on-screen menu language (page 7) · adjustment mode in the COLOR menu (EASY, EXPERT, sRGB) (page 12) · on-screen menu position (page 13) · control lock (page 13)
Damper wires
On-screen messages
If there is something wrong with the input signal, one of the following messages appears on the screen.
Resetting all of the adjustment data for all input signals
Press and hold the 0 (reset) button for more than two seconds.
Note The 0 (reset) button does not function when
* "Sleep" and "deep sleep" are power saving modes defined by the Environmental Protection Agency. ** When your computer enters a power saving mode, the input signal is cut and NO INPUT SIGNAL appears on the screen. After a few seconds, the monitor enters power saving mode.
US
1-6
If NO INPUT SIGNAL appears on the screen
I NFORMA T I ON MON I TOR I S WORK I NG I NPUT 1: NO I NPUT S I GNA L ACT I VA T E US I NG PC CHECK I NPUT SE L ECT OR CHECK S I GNA L CAB L E WH I T E RED GREEN B L UE
(CONTROL
LOCK) is set to ON.
1 The selected connector This message shows the currently selected connector (INPUT 1 or INPUT 2). 2 The input signal condition NO INPUT SINGAL This indicates that no signal is input, or that no signal is input from the selected connector. 3 The remedies One or more of the following messages may appear on the screen. · If ACTIVATE USING PC appears on the screen, try pressing any key on the computer, and confirm that your computer's graphic board is completely seated in the correct bus slot. · If CHECK INPUT SELECTOR appears on the screen, try changing the input signal (page 7). · If CHECK SIGNAL CABLE appears on the screen, check that the monitor is correctly connected to the computer (page 6).
14
15
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 18) if the following recommendations do not resolve the problem. Symptom No picture If the 1 (power) indicator is not lit If the NO INPUT SIGNAL message appears on the screen, or if the 1 (power) indicator is either orange or alternating between green and orange If the NO INPUT SIGNAL and CHECK SIGNAL CABLE message appear on the screen, or if the 1 (power) indicator is either orange or alternating between green and orange If the OUT OF SCAN RANGE message appears on the screen · Check that the power cord is properly connected. · Check that the 1 (power) switch is in the "on" position. · Check that the t switch setting is correct (page 7). · Check that the HD15 video input connector's pins are not bent or pushed in. xProblems caused by the connected computer or other equipment · The computer is in power saving mode. Try pressing any key on the computer keyboard. · Check that the computer's power is "on." · Check that the graphic board is completely seated in the proper bus slot. · 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. · Check that the t switch setting is correct (page 7). xProblems caused by the connected computer or other equipment · Check that the graphic board is completely seated in the proper bus slot. xProblems caused by the connected computer or other equipment · Check that the video frequency range is within that specified 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: 30 121 kHz Vertical: 48 160 Hz · Use the Self-diagnosis function (page 18). Check these items
Symptom Picture is ghosting Picture is not centered or sized properly Edges of the image are curved Wavy or elliptical pattern (moire) is visible
Check these items · Eliminate the use of video cable extensions and/or video switch boxes. · Check that all plugs are firmly seated in their sockets. · Press the button (page 7). · Adjust the size (page 10) or centering (page 10). Note that some video modes do not fill the screen to the edges. · Adjust the geometry (page 10). · Set CANCEL MOIRE to ON and adjust the degree of moire cancellation until the moire is at a minimum (page 11). xProblems caused by the connected computer or other equipment · Change your desktop pattern.
Color is not uniform
· Degauss the monitor* (page 13). 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. · Adjust the landing (page 11). · Adjust the color temperature (page 12). · Adjust the convergence (page 11). · If the control lock is set to ON, set it to OFF (page 13). · Before using this function, the monitor must be in normal operation mode (green power indicator on) for at least 30 minutes. For more information on using the COLOR RETURN function, see page 13. · Adjust the computer's power saving settings to keep the monitor in normal operation mode for more than 30 minutes. · The monitor may gradually lose its ability to perform this function due to the natural aging of the picture tube.
White does not look white Letters and lines show red or blue shadows at the edges Monitor buttons do not operate ( appears on the screen) COLOR RETURN function does not operate
COLOR EASY 5 0 0 0K EXPERT 6 5 0 0K s RG B 9 3 0 0K 5 0 0 0K
US
If no message is displayed and the 1 (power) indicator is green or flashing orange Picture flickers, bounces, oscillates, or is scrambled
COLOR RE TURN AVA I L AB L E A F T ER WARM UP
· Isolate and eliminate any potential sources of electric or magnetic fields such as other monitors, laser printers, electric fans, fluorescent lighting, or televisions. · 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. xProblems caused by the connected computer or other equipment · Check your graphics board manual for the proper monitor setting. · Confirm that the graphics mode and the frequency of the input signal are supported by this monitor. 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.
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 two seconds.
1-7
Picture is fuzzy
* 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.
While the monitor is receiving a video signal, press and hold the button for more than five seconds to display this monitor's information box.
Example
INFORMATION
If the problem persists, call your service representative and give the following information. · Model name: GDM-5402 · Serial number · Name and specifications of your computer and graphics board.
· Adjust the brightness and contrast (page 9). · Degauss the monitor* (page 13). · If CANCEL MOIRE is ON, the picture may become fuzzy. Decrease the moire cancellation effect or set CANCEL MOIRE to OFF (page 11).
b
MODEL : GDM 5402 SER NO : 1234567 MANUFACTURED : 1999-52
16
17
Self-diagnosis function
This monitor is equipped with a self-diagnosis function. If there is a problem with your monitor or computer(s), the screen will go blank and the 1 (power) indicator will either light up green or flash orange. If the 1 (power) indicator is lit in orange, the computer is in power saving mode. Try pressing any key on the keyboard.
Specifications
0.24 mm aperture grille pitch 21 inches measured diagonally 90-degree deflection FD Trinitron Viewable image size Approx. 403.8 × 302.2 mm (w/h) (16 × 12 inches) 19.8" viewing image Recommended resolution Horizontal: 1600 dots Vertical: 1280 lines Standard image area Approx. 388 × 291 mm (w/h) (15 3/8 × 11 1/2 inches) or Approx. 364 × 291 mm (w/h) (14 3/8 × 11 1/2 inches) Deflection frequency* Horizontal: 30 to 121 kHz Vertical: 48 to 160 Hz AC input voltage/current 100 to 240 V, 50 60 Hz, 2.0 1.0 A Power consumption Approx. 145 W Dimensions Approx. 498 × 491 × 478 mm (w/h/d) (19 5/8 × 19 3/8 × 18 7/8 inches) Mass Approx. 32 kg (70 lb 9 oz) Plug and Play DDC1/2B/2Bi, GTF** * Recommended horizontal and vertical timing condition · Horizontal sync width duty should be more than 4.8% of total horizontal time or 0.8 µs, whichever is larger. · Horizontal blanking width should be more than 2.3 µsec. · Vertical blanking width should be more than 450 µsec. ** If the input signal is Generalized Timing Formula (GTF) compliant, the GTF feature of the monitor will automatically provide an optimal image for the screen. Design and specifications are subject to change without notice. CRT
1
2
1 (power) indicator
If the 1 (power) indicator is green 1 Remove any plugs from the video input 1 and 2
connectors, or turn off the connected computer(s).
2 Press the 1 (power) button twice to turn the monitor
off and then on.
3 Press the , button for 2 seconds before the
monitor enters power saving mode.
1-8
If all four color bars appear (white, red, green, blue), the monitor is working properly. Reconnect the video input cables and check the condition of your computer(s). If the color bars do not appear, there is a potential monitor failure. Inform your service representative of the monitor's condition.
If the 1 (power) indicator is flashing orange
Press the 1 (power) button twice to turn the monitor off and then on. If the 1 (power) indicator lights up green, the monitor is working properly. If the 1 (power) indicator is still flashing, there is a potential monitor failure. Count the number of seconds between orange flashes of the 1 (power) indicator and inform your service representative 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.
18
GDM-5402
SECTION 2 DISASSEMBLY
2-1. CABINET REMOVAL
Push in the tip of a screwdriver about 5mm to unlock the claw. Cabinet Cabinet
4
Four screws (+ BVTT 4 x 8)
Bezel assembly
Bezel assembly
2
Two claws
5
Top cover
3
Cabinet
1
Two screws (+ BVTP 4 x 16)
2 6
Two claws
Four screws (+ BVTT 4 x 8)
7
Video shield
2-2. D BOARD REMOVAL
3
Screw (+ P 3.5 x 20) D board
4
Two screws (+ BVTP 3 x 12)
5
1
Three screws (+ BVTT 4 x 8)
B
GND CN504
CN505
Two hooks
2
A
Open the D block in the direction of the arrow A . and remove of the arrow B .
2-1
GDM-5402
2-3. G BOARD REMOVAL
3
Four screws (+BVTP 3 x 8)
4 1
G shield
Three screws (+ BVTT 4 x 8)
CN602
CN654 B CN653 CN652 CN650 GND
6
G board
7
GND
Two screws (+ BVTP 3 x 8) AC inlet (3P)
8
A
Two hooks
2
Open the G block in the direction of the arrow A . and remove of the arrow B .
5
Two printed circuit board holders
2-4. A BOARD, I/O TERMINAL BOARD ASSEMBLY REMOVAL
4
A board (2/2)
3
A board (1/2)
1
screw (M4) (EXT tooth washer)
When installing I/O terminal board assembly, be sure to apply A board (1/2) screw lock on 2 spots after screws (HD15) are fixed.
2
Three screws (+BVTT 4 x 8)
A board (1/2) Screw lock
5 6
I/O terminal board assembly
Two screws (HD15)
2-2
GDM-5402
2-5. N BOARD REMOVAL
CN5003 CN5002 CN001 CN002 CN5001
CN010 CN011
CN007
2
N board
1
Printed circuit board holder
2-6. SERVICE POSITION
CAUTION : SHORT
D,G boards Rear shield
If the claw is hooked, opening and closing the board is impossible. Do not try to do it by force.
D board (Refer to 2-2.) If the claw is hooked, opening and closing the board is impossible. Do not try to do it by force.
CN602
AC inlet (3P) G board (Refer to 2-3.)
2-3
GDM-5402
2-7. BEZEL ASSEMBLY, H BOARD REMOVAL
1
Before removing the bezel assembly, secure the picture tube by attaching two screws to the picture tube shield at the positions shown with an arrow (diagonal two places) to prevent the picture tube from falling. (Use the screws +BVTT 4 x 8 that fix top cover.)
2
Four screws (Tapping screw 5)
Picture tube shield
5
H board
CN801
4 6
Two screws (+ BVWHTP 3 x 12)
Input selection switch cap
3
Bezel assembly
2-8. J BOARD REMOVAL
Three degaussing coil holders
1
Degaussing coil
CN891
2 3
Degaussing coil holder When installing J board, put the behind of the board in two hooks.
Claw
4
J board
J board Two hooks
Claw
2-4
GDM-5402
2-9. PICTURE TUBE REMOVAL
Remove the bezel assembly. (Refer to 2-7)
1
Open the D block (Refer to 2-2.)
3
A board
8
Deflection yoke
5
Anode cap
CN4 CN5 GND
4
Open the G block (Refer to 2-3.) 7 Neck assembly Three connectors
2
6
Picture tube
· 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 anodecaps! 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.
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.
2-5
GDM-5402
2-10. HARNESS LOCATION
J board
CN891
H board
CN801
Picture tube
CN5 4pin
4pin CN4
CN651 CN650 CN652 CN653 CN654
CN601 CN603 CN5001 CN5003 CN5002 CN602 CN001 CN002
CN007 CN011
CN505 CN502
CN508 CN509
CN010
FBT
CN504
CN506 CN501
G board
AC inlet N board Rear shield
D board
I/O terminal board assembly
HD15
CN402
CN403
CN405
CN408
A board
2-6
CN406
CN407
GDM-5402
SECTION 3 SAFETY RELATED ADJUSTMENT
When replacing or repairing the shown below table, the following operational checks must be performed as a safety precaution against X-rays emissions from the unit. Part Replaced ([) HV ADJ RV901 Part Replaced (]) HV Regulator Circuit Check D Board C920, IC901, R923 R924, R929, R945, RV901, T902 (FBT) · Mounted D Board D Board C922, C925, C926, D912, D914, D915, D921, Q907, Q908, R921, R922, R932, R937, R939, T902 (FBT) · Mounted D Board D Board C910, C921, C933, D901, D902, D913, IC503, IC901, R901, R920, R928, R930, R931, R940, R941, T902 (FBT) · Mounted D Board G Board IC652 · Mounted G Board N Board IC001, R031, R032 · Mounted N Board
c) Beam Current Protector Circuit Check (1st Protector): D Board 1) Apply 4.5 V DC to CN504 0 pin on the D board, and check high voltage value. 2) Connect constant current source to a section between T902 (FBT) qa pin and qs pin (GND) on the D board, and check that high voltage checked in 1) lowers by 1.50 kV or more when the specified current flows to the qa pin. [Specification]: 2.00 + 0.00/ 0.01 mA
HV Protector Circuit Check
d) Beam Current Protector Circuit Check (2nd Protector): D Board 1) Connect constant current source to a section between T902 (FBT) qa pin and qs pin (GND) on the D board, and check that the voltage of CN504 0 pin becomes 0 V or less when the specified current flows to the qa pin. [Specification]: 1.70 + 0.00/ 0.01 mA
Beam Current Protector Circuit Check
e) Beam Current Protector Circuit Check : G Board 1) Apply 264 V AC. 2) Enter about 5 V to CN650 4 pin on the G board, and check that the output voltage of CN653 2 pin is about 15 V. 3) Enter about 0 ± 0.2 V to CN654 4 pin, and check that the output voltage of CN653 2 pin becomes 1.0 V or less. f) Beam Current Protector Circuit Check : N Board 1) Check that the protector operates, when the voltage of CN010 qh pin on the N board is lowered to 0 V or less (for more than 2 seconds).
* Confirm one minute after turning on the power. a) HV Regulator Circuit Check 1) Enter black crosshatch signal (black on white background), and check that high voltage is in the specified range. [Specification]: 27.00 ± 0.10 kV 2) Check that the voltage of D912 cathode on the D board is 27.0 V or more. b) HV Protector Circuit Check 1) Enter black crosshatch signal (black on white background). 2) Apply the specified voltage to the D912 cathode on the D board, and check that high voltage is 0.1 kV or less. [Specification]: 31.90 + 0.00/ 0.05 V
3-1
SECTION 4 ADJUSTMENTS
GDM-5402
Note: Hand degauss must be used on stand-by or power-off condition. This model has an automatic earth magnetism correction function by using an earth magnetism sensor and a LCC coil. When using a hand degauss while monitor (LCC coil) is being operated, it sometimes gets magnetized, and the system may not work properly as a result. · Landing Rough Adjustment 1. Enter the full white signal. (or the full black dots signal). 2. Adjust the contrast to the maximum. 3. Make the screen monogreen. Note: Off the outputs from R ch and B ch of SG. 4. Reverse the DY, and adjust coarsely the purity magnet so that a green raster positions in the center of screen. 5. Adjust the tilt of DY, and fix lightly with a clamp. Note: "TILT" = "128". · Landing Fine Adjustment 1. Put the set inside the Helmholtz coil. ("LCC SW" = "12") 2. Input the single green signal and set the "CONTRAST" = "255". Note: After the W/B adjustment with 9300 K, measure an average of Ik when a full white signal is entered in the CONT MAX/BRT CENT status. Then make adjustment so that the specified screen can be attained after aging for 2 hours with Ik equivalent to 30% of the average value. 3. Demagnetize the metal part of the chassis with the hand degausser and coil degausser, and the CRT surface with the hand degausser. Input AC 230V to AC IN, turn on and off the power to perform auto degaussing. (Perform auto degaussing by setting "FUNCTION SW" = 1. Return to the original value after use.) Demagnetize the CRT surface with the hand degausser again. Note: (1) Hand degauss must be used on stand-by or power-off condition. This model has an automatic earth magnetism correction function by using an earth magnetism sensor and a LCC coil. When using a hand degauss while monitor (LCC coil) is being operated, it sometimes gets magnetized, and the system may not work properly as a result. (2) Adjust in a non-magnetic field. (3) If adjusting in a magnetic fields, add the shift from the nonmagnetic field in your estimation. 4. Attach the wobbling coil to the designated part of the CRT neck. 5. Attach the sensor of the landing adjustment unit on the CRT surface.
6. Adjust the DY position and purity, and the DY tilt, and landing of the center and 4 corners with the landing checker. After adjustment, set "LCC SW" to "13". · Write terrestrial magnetism sensor reading VX and VY to "LCC VX" and LCC VY" respectively. Adjust the landing by moving "LCC NS", "LCC LT", "LCC LB", "LCC RT" and "LCC RB". However, the register adjustment must be limited within the following range. "LCC NS" 128 ± 15 "LCC LT", "LCC LB", "LCC RT", "LCC RB" 128 ± 40 Save the service data. Adjust so that the green is within the specification given right. 4 corner adjust target : within ± 1 The red and blue must be within the specification given right with respect to the green.
(µm) 0 ± 3 0 ± 7.5 0 ± 3 0 ± 3 0 ± 7.5 0 ± 3 0 ± 3 0 ± 7.5 0 ± 3 ±6 ±6 ±6 ±6 ±6 ±6 (µm) ±6 ±6 ±6 (µm) 10 10 10
A difference between red and blue must be within the specification given right.
10 10 10
10 7 10
* Adjustment and measurement should be made at the points one inch inside the fluorescent screen. 7. For the up/down swing, swing the DY and insert a wedge so that the up and down pins are equal at the top and bottom. Adjust the H.TRP VR of DY so that the horizontal trapezoid is equal at the left and right. Insert the wedge firmly so that the DY does not shake. 8. Check the landing of each corner, and if it does not satisfy the specification, adjust the landing of four corners using "LCC LT", "LCC LB", "LCC RT" and "LCC RB". However, the register adjustment must be limited within the following range. "LCC NS" 128 ± 15 "LCC LT", "LCC LB", "LCC RT", "LCC RB" 128 ± 40 After adjustment, save the service data. 9. Remove the sensor and wobbling coil. 10. Switch the signal to R.G.B., and check that each color is pure. 11. Check that the DY is not tilting, and fix the purity Mg with a white pen. Fix wedges with RTV.
4-1
GDM-5402
Connect the communication cable of the computer to the connector located on the D board. Run the service software and then follow the instruction.
1 1-690-391-21
2 A-1500-819-A Interface Unit
3 3-702-691-01 Connector Attachment
IBM AT Computer as a Jig
To BUS CONNECTOR
D-sub (9 Pin [female])
mini Din (8Pin)
4 Pin
4 Pin
4 Pin
*The parts above ( 1
3 ) are necessary for DAS adjustment.
· Convergence Rough Adjustment (1) Receive an image of the white crosshatch signals (white lines on black). (2) Place the protrusions of the 6-fold poles magnet attached to the CRT neck upon each other. (3) Make rough adjustment of the H and V direction convergence by using 4-fold poles magnet.
Purity 4-pole magnet 6-pole magnet 2-pole magnet
YCH H-TRP YBH TLH
· White Balance Adjustment Specification 1. 9300 K x = 0.283 ± 0.005 y = 0.298 ± 0.005 (All White) 2. 6500 K x = 0.313 ± 0.005 y = 0.329 ± 0.005 (All White) 3. 5000 K x = 0.346 ± 0.005 y = 0.359 ± 0.005 (All White) · Vertical and Horizontal Position and Size Specification
A b
XBV
APH XCV
a b a a b 2.0 mm 2.0 mm B
MODE A B
4:3 388 291
5:4 364 291
* Set so that the protruding parts of the 2 magnet rings agree with each other.
XCV B XBV R
B R
TLH
· Focus adjustment Adjust the focus volume 1 and 2 for the optimum focus.
R
B B
R
TLV R B B R
YCH
YBH
R
B
R
B
Focus 1
· Convergence Specification
Focus 2
B V A
fH A B
60kHz 0.20 mm 0.24 mm
60kHz> 0.24 mm 0.28 mm
FBT
4-2
SECTION 5 DIAGRAMS
5-1. BLOCK DIAGRAMS
CN402 BIN2 GIN2 RIN2 2 4 6 IC401 INPUT SELECT CN401 HD15
5 15 4 3 2 6 11 1 15 10 14 9 5 1 4 3 2 1 11 9 7 18 14 10 9 8 7 14 13 12 5 3
IC402 RGB DRIVE
35 2
IC403 RGB AMP ROUT GOUT BOUT
41 12
CN407
14
CN408 KR KG KB HEATER+ 5 3 1 7 V901 PICTURE TUBE
BIN2 GIN2 RIN2
ROUT GOUT BOUT R DET IN G DET IN B DET IN V-DET
RIN GIN BIN
RIN GIN BIN
ROUT GOUT BOUT
5 3 1 7
KR KG KB HEATER+
32
6
38
8
6
29
11
33
2
4
INPUT1 CONNECTOR PANEL INPUT2 HD15
13 8 12 7 11 6
BIN1 GIN1 RIN1 INPUT SW G. DET
23 21 19
G2 IC406 CUTOFF AMP
25
A
TO N BOARD CN002
CN405 ROUT
3 5 7 17
CN403 HOST GND 1 DDC SCL 1 DDC +5V 1 VS1 HS/VS1 DDC SDA 1 INPUT SEL G. SYNC DET SYNC ON G CLP C. BLK SCL SDA H. SYNC V. SYNC HFBP 21 19 18 17 16 20 12 7 6 2 4 13 14 8 9 10 IC407
25
17
D/A5 CLP BLK OSD BLK SCL SDA
4
SYNC SEP OUT
CLP C. BLK
D/A4 D/A3 D/A2
26 27 28
15 14 13
RIN GIN BIN GIK RIK BIK
9 5V 5V-2 DRIFT CORRECT Q401 +80V +220V +12V PS401 1A 1 2 4 6 8
HEATER STBY+5V 1W+5V +80V +220V +12V
21 30
GOUT BOUT GND
HV
FC
FV
E
TO G BOARD CN652
SCL 22 SDA 23
OSD G
OSD R
OSD B
12 11 10
9
13
1
B
TO N BOARD CN001
18 19 20 21
8
15 16 17
CN406 PWM4 RCI GCI BCI PWM1 XT1 XT0
11 26 25 24
GOUT
ROUT
BOUT
FBLK
AV
PWM2
PWM3
SCL 4 SDA 3 H. SYNC V. SYNC HFBP 5V VCC KICK Q402
5 6 7
SCL SDA VS Hfly VDD
BUFFER Q101, Q201, Q301
14
1 IC405 (1/2)
6 5
G2
IC404 OSD
+
7
G2 CONT Q406, 407, 410
A
CN504 STBY+5V RXD TXD +15V +15V 15V 15V HDF 16 18 20 24 25 22 23 14 12 10 8 7 6 5 4 3 2 1 20 18 16 14 12 10 25 24 23 22 21 19 8 6 3 1 4 TH DET S4 S3 S5 S2 S1 HFBP HD V RET VSHAPE S5-1 +80V 15V +15V +12V HDF VDF ABL DET HV DET S0 H CENT S6 HSPBAL HLIN H SIZE HSP 2 4 1 6 2 3 4 CN503 STBY+5V RXD TXD CN501 +15V 15V +12V +80V TO G BOARD CN653 ECS
12
X401 8MHz
(VIDEO AMP, RGB OUT)
D
CN508 +220V +220V H CENT L H CENT N H CENT H 5 4 3 2 1
(DEFLECTION)
T501 HDT
4
1
8
H OUT, BUFF Q515, 520
HFBP
14
IC901 HV CONTROL +220V HDIN PWMOUT
10 3
CN506 HV REG SW Q905
2
5
T901 HRC
5
1
G2
H OUT Q509 +220V IC502 H CENT OUT H SENT H 5 H SENT L 3 H SENT N 1 H SENT H 2 H CENT Q514 IC501 PIN CONTROL HDIN
14
H DRV Q502, 503
HD
F G
TO G BOARD CN654
ERROUT
+ HVD
11
T902 FBT
5
C
TO N BOARD CN010
VDF ABL HV DET S0 H CENT S6 HSPBAL HLINBAL H SIZE H SHAPE CN505 STBY+5V 1W+5V ECO SW PWR SW DGUS SW HTR SW TH DET S4 S3 S5 S2 S1 HFBP HD V RET VSHAPE +12V
+12V
TH DET Q521, 522
TH DET
12
HV DRV Q903, 904
HV OUT Q906
1
HV
17
HV HV ADJ RV901
VCC ABL VEE +VIN VIN VDF HDF V DRV Q706, 707 H DRV Q701-705
5 2 11
11
2
OUT
T502 HCT
4 2 5
FC HV DET
15 16
FC
HV DET Q907, 908
6
FV
14
FV
14
5
15
CN502 1 2 3 4 5 6 STBY+5V 1W+5V ECO SW PWR SW DGUS SW HTR SW
2
7
PWMOUT
3
PIN DRV Q504, 505 L505 HOC +220V PIN OUT Q508
2 5
T701 DFT V RET V SHAPE T503 HST
1 5 3 5
IC701 V DY OUT OUT VCC + OUT
4 2
+12V
11
H
TO G BOARD CN650
ERRIN
6
V+ V V V+ 2 3 9 10
CN509 V. DY C V. DY H H. DY H H. DY H H. DY C H. DY C R. DY V. DY
D
TO N BOARD CN011
GAIN SW Q526
PIN AMP Q524
3
7 8
O2 O1 3 +1 O3
9
O4 4
14 13
HLIN
HL OUT Q516, 518
4
3
2
5 6
1
3
1
HSPBAL
ABL DET
H CENT
IC503 AMP
S0-4, S6
H SIZE
S5-1
ABL
S5
Q523
HSP
S CAP CHANGE Q501, 506, 507, 510-513, 517, 525
T505 HLC
S5 RY501 S5 RELAY DRV Q519
B-SS9116 -BD1-EPS05
5-1
5-2
N
CN002 DDC+5V 2 DDC SCL 2 DDC SDA 2 HS/CS 2 VS 2 HOST GND 2 7 6 5 2 1 4
µ-COM, V.CONV, H. CONV, LCC, GEO MAGNETIC SENSOR
DET2
SDA2 DET2 SCL2 VS2
DET1
SDA2 SDA1 SCL1 SCL2 VS2 VS1
48 49
IC5301 (2/2)
6 7
CN5002
8
UBI3 UBI4 UIN3 UIN4 P54/INT4
IC001 CPU/DSP
STBY+5V
8 8
+
3 4 1 2
LCC-LB (+) LCC-LB () LCC-LT (+) LCC-LT () LCC-RB (+) LCC-RB () LCC-RT (+) LCC-RT ()
LCC-LB LCC-LT LCC-RB LCC-RT
5
6
7
7
6
5
SCL
VCLK
VCLK
SDA
SCL
VCC
106 107 31
VCC
SDA
A
TO CONNECTOR PANEL INPUT2
HS2 VC2
IC5301 (1/2)
4 3
IC012 ROM
IC011 ROM
+
2
7 8 5 6
IC5101 (2/2)
SDA1 DET1 SCL1
CN001 DDC+5V 1 DDC SCL 1 DDC SDA 1 HS/CS 1 VS 1 HOST GND 1 CLP C. BLK SYNC ON G INPUT SEL G. SYNC DET SCL SDA H. SYNC V. SYNC HFBP 4 3 2 6 5 1 20 18 16 10 15 9 8 14 13 12
VS1
UPWM21 UPWM19
46 47
156 152 157 153 149
6 7
+
8
UBI1 UBI2 UIN2 UIN1 P52/INT2 UOUT3 UOUT1 UIN5 P91 SCL2 SDA2 UOUT7
UPWM22 UPWM20 UPWM18 UPWM13 UPWM17 UPWM9
IC5101 (1/2)
4 3
HS1 VC1
104 103 29 53 51 108 69
+
2
140 148 131
IC5201 (2/2)
6 7
CN5003
8
B
TO A BOARD CN403
+
1 2
LCC-NS (+) LCC-NS () CN5001
LCC-NS
SOG DET D SCL D SDA HSOUT VS OSD HFBP IC006
5 6 41 42 98
GS5001 GEOSENSOR
IC5201 (1/2)
4 3
+
2
5 6 3
ROTATION (+) ROTATION () H CONV (+) H CONV () V CONV (+) V CONV ()
ROTATION H. CONV V. CONV
AIN7 AIN8
7
83 84
IC5401 (2/2)
6 7
+
75
IC003 EEP ROM AIN0 SDA1 SCL1 P82
39 38 40 5 6 7
+
8
4 1 2
IC5401 (1/2) SDA SCL WC
3 8 4 3
CN010 ABL HDF VDF HV DET H CENT HSPBAL HLINBAL HSIZE HSHAPE TXD RXD +15V