Sony CPD-2403 Service manual

SERVICE MANUAL
CPD-2403
CPD-2403
AEP Model
Chassis No. SCC-L29R-A
Picture tube
Video image area
Resolution
Standard image area
Input signal
Video
Sync
SPECIFICA TIONS
0.24-0.25 mm aperture grill pitch
17 inches measured diagonally 90-degree deflection
(16" maximum viewing image) Approx. 327 X 243 mm (w/h)
7/8
(12
Horizontal: Max. 1600 dots Vertical: Max. 1200 lines
Approx. 312 x 234 mm (w/h) (12
Analog RGB (75 ohms typical)
0.7 Vp-p, ±5%, Positive Separate HD/VD, TTL Polarity Free External Composite, TTL Polarity Free (2K ohms impedance)
5/8
x 9
inches)
1/4
1/4
x 9
inches)
D99
P
ower Consumption
Deflection frequency
AC input voltage / current
Dimensions
Mass
CHASSIS
Maximum 130W Minimum 95W
Horizontal: 30 to 94 KHz Vertical: 48 to 120 Hz
100 to 120 V, 50/60 Hz, 1.7A 220 to 240V, 50/60Hz, 0.9A
404 x 414 x 420mm (w/h/d)
15/16
(15
Approx. 18.8 kg (41 lb 7 oz.)
x 16
3/8
x 16
1/2
inches)
Design and specifications are subject to change without notice.
TRINITRO N® COLOR MONITOR
CPD-2403
1 Normal operation active y es yes < 130 W -- Green
POWER MANAGEMENT
The power saving mode complies with the VESA Display P ower Management Signaling standard. Each state of power management shall be activated by the host computer terminating the appropriate sync signals. Blanking the video must precede ter mination of the sync signals. The elapsed time counter shall also be controlled by the host computer . Reactivation of the monitor shall be accomplished from the host computer by re-establishing the normal sync signal.
Power consumption Screen Horizontal Vertical Power Recovery time indicator mode (video) sync signal sync signal consumption
2 Standby (1st mode) blank no yes < 15 W Approx. 3 sec. Green and Orange
3 Suspend (2nd mode) blank yes no < 15 W Approx. 3 sec. Green and Orange
4 Active-off (3rd mode) blank n o no < 3 W Approx. 10 sec. Orange 5 P ower-off -- -- -- 0 W -- Off
Alternate
Alternate
SELF DIAGNOSIS FUNCTION
When a failure occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the lamp will identify the first of the problem areas.
Status Area of Failure LED Indication
1 Failure 1 HV or +B Amber (0.5 second)/Off (0.5 second) 2 Failure 2 H Stop or V Stop Amber (1.5 second)/Off (0.5 second) 3 Failure 3 ABL Amber (0.5 second)/Off (1.5 second) 4 Aging/Self Test Amber (0.5 second)/Off (0.5 second)/
Green (0.5 second)/Off (0.5 second)
TIMING SPECIFICATION
TIMING SPECIF ICATION
Resolution (H x V) 640 x 480 720 x 400 800 x 600 1024 x 768 1280 x 1024 1600 x 1200
MODE
Dot Clock (MHz) 25.175 28.322 56.250 94.500 135.000 202.500
HORIZONTAL
Hor. Freq. (kHz) 31.469 31.469 53.674 68.677 79.976 93.750
H-Total 31.778 31.777 18.631 14.561 12.504 10.667
H-Blanking 6.356 6.355 4.409 3.725 3.022 2.765
H-Front Porch 0.636 0.636 0.569 0.50 8 0.119 0.316
H-Sync. 3.813 3.813 1.138 1.016 1.067 0.948
H-Back Porch 1.907 1.907 2.702 2.201 1.837 1.501
H-Active 25.422 25.422 14.222 10.836 9.481 7.901
(µsec.)
VERTICAL
Ver. Freq. (Hz) 59.940 70.087 85.061 84.997 75. 02 5 75.000
V-Total 525 449 631 808 1066 1250
V-Blanking454931 40 42 50
V-Front Porch1012 1 1 1 1
V-Sync. 2 2 3 3 3 3
V-Back Porch 33 35 27 36 38 46
V-Active 480 400 600 768 1024 1200
(lines)
SYNC.
Int (G)NoNoNo No No No
Ext (H/V)/Polarity Yes -/- Yes -/+ Yes +/+ Yes +/+ Yes +/+ Yes +/+
Ext (CS)/Polarity No No No No No No
Int/Non Int Non Int Non Int Non Int Non Int Non Int Non Int
123 4 5 6
Primary Mode
— 2 —

TABLE OF CONTENTS

Section Title Page
Safety Check Out Instructions .............................................................. 4
1. GENERAL.................................................................................. 5
2. DISASSEMBLY
2-1. Cabinet Removal ........................................................... 9
2-2. Service Position ............................................................. 9
2-3. A and D Board Removal ............................................... 9
2-4. Picture Tube Removal ................................................. 10
CPD-2403
3. SAFETY RELATED ADJUSTMENTS ........................... 11
4. ADJUSTMENTS .................................................................... 12
5. DIAGRAMS
5-1. Block Diagram .............................................................. 15
5-2. Circuit Boards Location ................................................ 18
5-3. Schematic Diagrams and Printed Wiring Boards......... 18
1. D Board - Schematic Diagram ............................... 19
2. A Board - Schematic Diagram ............................... 26
5-4. Semiconductors ........................................................... 2 9
6. EXPLODED VIEWS
6-1. Chassis ........................................................................ 31
6-2. Packing Materials ........................................................ 3 2
7. ELECTRICAL PARTS LIST .............................................. 33
— 3 —
CPD-2403

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 y our repair f or unsoldered or poorly­soldered 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 hav e been replaced. Be absolutely certain that you have replaced all the insulators.
4. Look for unauthor ized replacement parts, particularly transistors, that were installed during a previous repair . Point them out to the customer and recommend their replacement.
5. Look f or 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 v alues. Make sure your instruments are accurate; be suspicious of your HV meter if sets alwa ys 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.
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 microampere). Leakage current can be measured b y any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manuf acturers' instructions to use these instructions.
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 m ust have an accura te low voltage scale. The Simpson's 250 and Sanwa SH-63Trd are examples of passive VOMs that are suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Figure A)
WARNING!!
NEVER TURN ON THE POWER IN A CONDITION IN WHICH THE DEGAUSS COIL HAS BEEN REMOVED.
SAFETY-RELA TED COMPONENT W ARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK ON THE SCHEMATIC DIA GRAMS, EXPLODED VIEWS AND IN THE P ARTS 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.
0.15 µF
To Exposed Metal Parts on Set
1.5 k
Earth Ground
Figure A
AVER TISSEMENT!!
NE JAMAIS METTRE SOUS TENSION QUAND LA BOBINE DE DEMAGNETISA TION EST ENLEVEE.
ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE
AC Voltmeter (0.75 V)
MARQUE SUR LES SCHEMAS DE PRINCIPE, LES VUES EXPLOSEES ET LES LISTES DE PIECES SONT D'UNE IMPORTANCE CRITIQUE POUR LA SECURITE DU FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES COMPOSANTS SONY DONT LE NUMERO DE PIECE EST INDIQUE DANS LE PRESENT MANUEL OU DANS DES SUPPLEMENTS PUBLIES PAR SONY. LES REGLAGES DE CIRCUIT DONT L'IMPORTANCE EST CRITIQUE POUR LA SECURITE DU FONCTIONNEMENT SONT IDENTIFIES DANS LE PRESENT MANUEL. SUIVRE CES PROCEDURES LORS DE CHAQUE REMPLACEMENT DE COMPOSANTS CRITIQUES, OU LORSQU'UN MAUVAIS FONTIONNEMENT SUSPECTE.
— 4 —
Getting Started
5
Getting Started Customizing Your Monitor
US
This monitor can be adjusted within the angles shown below. To turn the monitor vertically or horizontally , hold it at the bott om with both hands.
1
Press the (BRIGHTNESS)
v/V
or 6 (CONTRAST)
B/b
buttons.
The BRIGHTNESS/CONTRAST OSD appears.
2
To adjust the brightness.
Press the (BRIGHTNESS)
v/V
buttons.
To adjust the contrast.
Press the 6 (CONTRAST)
B/b
buttons.
Use of the Tilt/Swivel
Video Connector
Pin No. Signal Pin No. Signal
1 Red video 8 Blue return 2 Green video 9 Not used (no pin) 3 Blue video 10 Ground 4 Ground 11 Ground 5 CPU host ground 12 SDA (serial data) 6 Red ground 13 Horizontal S ync 7 Green return 14 Vertical Sync
15 SCL (serial clock)
90°
90°
15°
1234
5
987
10
11 12 13 14 15
6
Adjusting the Picture Brightness and Contrast
Setup
Connect the monitor to your computer system. This monitor will sync to platforms running at horizontal frequencies between 30 and 85 kHz.
Step 1
Make sure the computer system is switched off and attac h the video signal cable to the video output of the computer.
Computer
to the video output
— 5 —
Parts and Controls
Front
(RESET) button (pages 6, 9)
1
This button resets the adjustments to the factory settings.
(BRIGHTNESS) (
2
These buttons adjust the picture brightness and function as the
v/V
(
) buttons when adjusting other items.
(MENU) button (page 6)
3
This button displays the MENU OSD.
(CONTRAST) (
4 6
These buttons adjust the contrast and function as the ( buttons when adjusting other items.
) buttons (page 5)
v/V
) buttons (page 5)
B/b
B/b
)
Step 2
Make sure the computer is switched off and attach the power cord to the monitor. Then, attach the other end of the power cord to a power outlet.
to a power outlet
Step 3
Switch on the monitor and computer.
Step 4
Adjust the user controls accord ing to your personal preference. Installation is complete.
Rear
(POWER) switch and indicator
5 1
This button turns the monitor on and off. The indicator lights up green when the mo nitor is on , and ligh ts up green and orange when the monitor is in Power Saving mode.
AC IN connector
6
This connector provides AC power to the monitor.
Video input connector (HD15) (page 5)
7
This connector inputs RGB video signals and SYNC signals.
Power cord
SECTION 1
GENERAL
The following are partial abstracts from the Operating Instruction Manual. The page numbers shown reflect those of the Operating Instruction Manual.
BRIGHTNESS/CONTRAST
26 26
CPD-2403
4
Customizing Your Monitor
7
Customizing Your Monitor
US
1
Adjusting the size and centering of the picture (SIZE/CENTER)
This setting is stored in memory for the current input signal.
1
Press the MENU button.
The main MENU appears on the screen.
2
Press the
v/V
buttons to highlight SIZE/
CENTER and press the MENU button again.
The SIZE/CENTER menu appears on the screen.
3
Press the
v/V
buttons to select the desired
adjustment item. Then press the 6
B/b
buttons to
adjust the setting.
The OSD automatically disappears after about 30 seconds. To close the OSD, press the MENU button again.
Note
Adjustment stops when either the horizonta l or ve rti cal size reaches its maximum or minimum value.
2
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 MENU button.
The main MENU appears on the screen.
2
Press the
v/V
buttons to highlight GEOMETRY
and press the MENU button again.
The GEOMETRY menu appears on the screen.
3
First press the
v/V
buttons to select the desired
adjustment item. Then press the 6
B/b
buttons to
adjust the setting.
The OSD automatically disappears after about 30 seconds. To close the OSD, press the MENU button again.
3
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 whi te 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 MENU button.
The main MENU appears on the screen.
2
Press the
v/V
buttons to highlight COLOR and
press the MENU button again.
The COLOR menu appears on the screen.
3
Press the
v/V
buttons to select a color
temperature.
The preset color temperatures are 9300K and 5000K. Since the default setting is 9300K , the whites c hange fr om a bluish hue to a reddish hue as the temperatur e is lowered to 5000K. You can also fine tune the color temperature by selecting in step 2 above, and using the 6
B/b
buttons to adjust the color
temperature manually.
This OSD allows you to adjust the color temperature between 9300K and 5000K. Press the 6
B/b
buttons to adjust the color temperature. The OSD automatically disappears after about 30 seconds. To close the OSD, press the MENU button again.
Adjusting the Settings
Select To
HORIZONTAL CENTERING
shift the picture to the left or right
VERTICAL CENTERING
shift the picture up or down
HORIZONTAL SIZING
enlarge or reduce the picture width
VERTICAL SIZING
enlarge or reduce the picture height
ZOOM
enlarge or reduce the picture width and height proportionally
Select To
ROTATION
rotate the picture
PINCUSHION
expand or contract the picture sides
PIN BALANCE
shift the picture sides to the left or right
KEYSTONE
adjust the picture width at the top of the screen
KEY BALANCE
shift the picture to the left or r igh t a t the top of the screen
The OSD (On-screen Display) System
Introducing the OSD System
You can adjust most of the monitor’s settings using the OSDs (On­screen Display). All of the OSDs in this illustration are described on the following pages in order. You can access any of these OSDs from the MENU OSD. To adjust monitor settings using the OSDs, follow the steps below:
Basic controls:
• Use the (MENU) button to display the MENU OSD and to select menu items .
• Use the (BRIGHTNESS) items and to adjust settings.
To adjust the monitor settings: 1
Press the MENU button to display the MENU OSD.
2
Highlight the desired OSD using the BRIGH TNESS butto ns and press the MENU button again.
— 6 —
1
4
7
6
SIZE/CENTER
SIZE/CENTER
26
CONVERGENCE
CONVERGENCE
26
HELP
HELP
RETURN TO MAIN MENU RECOMMENDED RESOLUTION FLICKER THIN HORIZONTAL LINE DISTORTED SHAPE OUT OF FOCUS DISCOLORATION
v/V
buttons to highlight menu
Resolution for current input signal
1 2 3 4 5 6 7
GEOMETRY
2
GEOMETRY
LANGUAGE
5
LANGUAGE
ENGLISH FRANÇAIS DEUTSCH ESPAÑOL ITALIANO NEDERLANDS SVENSKA
MENU
26
3
If necessary, use the BRIGHTNESS buttons to select a specific item.
4
Adjust the monitor setting using the BRIGHTNESS and CONTRAST buttons.
• To reset the current item to its original setting, press the (RESET) button while the item’s adjustment OSD is displayed.
5
When you finish adjusting the setting, press the MENU button to return to the MENU OSD. Press the MENU button twice to return to norma l viewing.
• Resetting: If you press the RESET button while an OSD is displayed, only the current adjustment item is reset. For additional information on using the reset function, see the “Resetting the Adjustments” section on page 9.
• Each of the adjustment’s OSD automatically disappears after 30 seconds.
EXIT SIZE/CENTER GEOMETRY COLOR CONVERGENCE LANGUAGE OPTION HELP
80.0kHz/ 75Hz 1280 X 1024
MENU
OK
Horizontal/Vertical frequencies for current input signal
COLOR
3
COLOR
9300K 5000K
OPTION
6
OPTION
DEGAUSS
ON
COLOR
9300K 5000K
CPD-2403
26
Customizing Your Monitor
9
Customizing Your Monitor
US
7
Using the HELP OSD
1
Press the MENU button.
The main MENU appears on the screen.
2
Press the
v/V
buttons to highlight HELP and
press the MENU button again.
The HELP OSD appears on the screen.
3
Press the
v/V
to select an option from the HELP menu, then press the MENU button to view the HELP information.
Resetting the adjustments
Navigate through the on-screen menus to select the adjustment item you want to reset, and press the RESET button before the OSD disappears.
Press the RESET button when no OSD is displayed on the screen. Note that the following items are not reset by this method:
• o n-screen menu language (page 8)
• on-screen menu position (page 8)
Press and hold the reset button for more than two seconds. This resets everything to the factory presets including the input selectio n.
Note
The RESET button does not function when
(CONTROL LOCK) is
set to ON.
HELP
RETURN TO MAIN MENU RECOMMENDED RESOLUTION FLICKER THIN HORIZONTAL LINE DISTORTED SHAPE OUT OF FOCUS DISCOLORATION
Resetting a specific adjustment
Resetting all of the adjustments for the current input signal
Resetting all of the adjustment data to the factory presets
Design and specifications are subject to change without notice.
Monitor Information
You can display the model name, serial number and year of manufacture using the INFORMATION OSD.
Press and hold the MENU button for 5 seconds.
The INFORMATION OSD appears.
The INFORMATION OSD includes the model name, serial number and year of manufacture.
The OSD automatically disappears after about 30 seconds.
If Thin Lines Appear on Your Screen (damper wires)
The lines you may be seeing on your screen are normal for the Trinitron monitor and are not a malfunction. These are shadows from the damper wires that 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 re ach the screen, resulting in a brighter, more detailed picture.
INFORMATION
MODEL : CPD–24**** MANUFACTURED : 1999–53
SER NO : 1234567
Damper wires
Approx. 6 cm
Approx. 6 cm
Adjusting the quality of the
4
picture (CONVERGENCE)
The CONVERGENCE settings allow you to adjust the quality of the picture by eliminating red or blue shadows around letters, characters and lines. Both settings are stored in memory for all input signals.
1
Press the MENU button.
The main MENU appears on the screen.
2
Press the CONVERGENCE and press the MENU button again.
The CONVERGENCE menu appears on the screen.
3
Press the 6 convergence, or the vertical convergence.
The OSD automatically disappears after about 30 seconds. To close the OSD, press the MENU button again.
Changing the OSD language
5
(LANGUAGE)
This setting is stored in memory for the current input signal.
1
Press the MENU button.
— 7 —
The main MENU appears on the screen.
2
Press the and press the MENU button again.
The LANGUAGE menu appears on the screen.
3
Press the prefer.
The OSD automatically disappears after about 30 seconds. To close the OSD, press the MENU button again.
Additional settings (OPTION)
6
You can manually degauss (demagnetize) the screen, cancel the moire, adjust the OSD horizontal position, adjust the OSD vertical position and lock the controls using the OPTION OSD.
1
Press the MENU button.
The main MENU appears on the screen.
2
Press the press the MENU button again.
The OPTION menu appears on the screen.
3
Press the adjustment item.
Adjust the selected item according to the following instructions. The OSD automatically disappears after about 30 seconds. To close the OSD, press the MENU button again.
8
buttons to highlight
v/V
buttons to adjust the horizontal
B/b
buttons to highlight LANGUAGE
v/V
v/V
buttons to highlight OPTION and
v/V
v/V
buttons to adjust the
v/V
buttons to select the language you
buttons to highlight the desired
Degaussing the monitor
The monitor is automatically degaussed (demagnetized) when the power is turned on.
To manually degauss the monitor, first press the
buttons to highlight (MANUAL DEGAUSS).
v/V
Then press only the right 6 b button.
The monitor is degaussed for about three seconds. If a second degauss cycle is needed, allow a minimum interval of 20 minutes for the best result.
Adjusting the amount of the moire cancellation
To adjust the amount of moire cancellation, first press the
buttons to highlight ( MOIRE
v/V
CANCEL). Then press the amount of moire cancellation 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.
Example of moire
buttons to adjust the
6 B/b
Adjusting the OSD Horizontal Position
To change the horizontal position of the OSD, first press the POSITION). Then press the the horizontal position of the OSD.
buttons to highlight (OSD H
v/V
OPTION
OSD H POSITION
6 B/b
26
buttons to adjust
Adjusting the OSD Vertical Position
To change the vertical position of the OSD, first press the
buttons to highlight (OSD V
v/V
POSITION). Then press the the vertical position of the OSD.
OPTION
Locking the controls
To protect adjustment data by locking the controls, first press (CONTROL LOCK). Then press the toggle the Control Lock on or off.
Only the 1 (power) switch and MENU button will operate.
buttons to highlight
v/V
OSD V POSITION
6 B/b
26
buttons to adjust
6 B/b
buttons to
CPD-2403
Additional Information
12
Additional Information
* 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.
Picture is fuzzy
• Adjust the brightness and contrast (page 5).
• Degauss the monitor* (page 8).
• If CANCEL MOIRE is ON, the picture may become fuzzy. Decrease the moire cancellation effect (page 8) or set CANCEL MOIRE to OFF.
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 7) or centering (page 7). Note that some video modes do not fill the screen to the edges.
Edges of the image are curved
• Adjust the geometry (page 7).
Wavy or elliptical pattern (moire) is visible
• Can cel the moire (page 8).
x
Problems caused by the connected computer or other equipment
• Change your desktop pattern.
Color is not uniform
• Degauss the monitor* (page 8). 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 7).
Letters and lines show red or blue shadows at the edges
• Ad just the convergence (page 8).
Monitor buttons do not operate
• If the control lock is set to ON, set it to OFF (page 8).
A hum is heard right after the power is turned on
• This is the normal sound of the auto-degauss cycle. When the power is turned on, the monitor is automatically degaussed for 3 seconds.
Symptom Check these items
Warning Messages
If there is something wrong with the input signal, one of the following messages appears.
Out of Scan Range
1
This message indicates that the current input signal is not appropriate for the monitor’s specificatons.
Power Save Mode
2
This message indicates that the monitor has reduced power consumption.
Check Signal Cable (self test pattern)
3
This message indicates that either no input sig nal is received, or the video cable is not connected.
To solve these problems, see the “Troubleshooting” section below.
Troubleshooting
— 8 —
If the problem is caused by the connected computer or other equipment, please refer to the connected equip ment’s instruction manual.
Symptom Check these items No picture
If the 1 (power) indicator is not lit • Check that the power cord is properly connected.
If the CHECK SIGNAL CABLE message appears 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
Picture flickers, bounces, oscillates, or is scrambled
• Check that the 1 (power) switch is in the “on” position.
• Check that the video signal cable is properly connect ed and all plugs are firmly seated in their sockets.
• Check that the HD15 video input cable’s pins are not bent or pushed in.
Problems caused by the connected computer or other equipment
x
• 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 video board is completely seated in the proper bus slot.
Problems caused by the connected computer or other equipment
x
• Check that the video frequency range is within that specified for the monitor. If you replaced
an old monitor with this monitor, rec onnect the o ld monitor and adjust the freque ncy ra nge to the following: Horizontal: 30 – 85 kHz V e rtic a l: 48 – 120 H z
• Isola te and eliminate any potential source s of electric or magnetic fields such as other
monitors, laser printers, electric fans, fluorescent lighting and 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, prefera bly on a dif fe re nt circ uit .
• Try turning the monitor 90° to the left or right.
Problems caused by the connected computer or other equipment
x
• Check your graphic video board manual for the proper monitor setting.
• Confirm that the graphics mode (VESA, VGA, etc.) and the frequency of the input signal are
supported by this monitor (Appendix). Even if the frequency is within the proper range, some graphic 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.
INFORMATION
MONITOR IS WORKING OUT OF SCAN RANGE
CHANGE PC SETTING
INFORMATION
MONITOR IS IN POWER SAVE MODE
ACTIVATE USING PC
INFORMATION
MONITOR IS WORKING CHECK SIGNAL CABLE WHITE
RED GREEN BLUE
CPD-2403
US
11
SECTION 2

DISASSEMBLY

CPD-2403
2-1. CABINET REMOVAL
2-2. SERVICE POSITION
Two claws
Cabinet
PUSH
PUSH
Two screws (BVTP 4 x 16)
2-3. A and D BOARD REMOVAL
1
A board
A board
2
Two screws
(BVTP 3 x 12)
3
Five screws
(BVTP 3 x 8)
4
One screw
5
Cable stopper
(BVTT 4 x 8)
D board
1 When the D-board is placed in service position, the Safety Earth Wire (green and yellow wire) is disconnected. 2 After service is completed and the D-board reinstalled, the Safety Earth Wire must be reattached to the chassis with the proper screw. This must be confirmed before any subsequent procedures are attempted.
7
Chassis base
D board
8
— 9 —
10
Holder
7
EMI Shield
CPD-2403
Anode Button
c
2-4. PICTURE TUBE REMOVAL
WARNING:
BEFORE REMOVING
THE ANODE CAP
High voltage remains in the CRT even after the power is disconnected. T o avoid electric shock, discharge CR T before attempting to remove the anode cap. Short between anode and CRT coated earth ground strap.
Coated Earth Ground Strap
8
Demagnetization coil
7
Tension spring
6
A board
5
Neck assy
4
Deflection yoke
3
Four screws
(Tapping screw 5)
Picture tube shield
2
1
Anode cap
9
Two screws
(BVTP 4 x 16)
10
Stand ass'y (D board)
Cushion
ANODE CAP REMOVAL
WARNING: High voltage remains in the CRT ev en after the power is disconnected. To avoid electric shock, discharge CRT
NO TE: After remo ving the anode, shor t circuit the anode of the picture tube and the anode cap to either the metal
before attempting to remove the anode cap. Short between anode and CRT coated earth ground strap.
chassis , CRT shield, or carbon painted on the CRT.
REMOVAL PROCEDURES
a
1 Turn up one side of the rubber cap in
the direction indicated by arrow a .
2 Use your thumb to pull the rubber
HOW TO HANDLE AN ANODE-CAP
1 Do not use sharp objects which may cause damage to the
surface of the anode cap.
2 Do not squeeze the rubber covering too hard to avoid damag-
ing the anode cap. A mater ial fitting called a shatter-hook ter­minal is built into the rubber.
3 Do not force turn the foot of the rubber cover. This may cause
the shatter-hook terminal to protrude and damage the rubber.
b
cap firmly in the direction indicated by arrow b .
3 When one side of the rubber cap
separates from the anode button, the anode cap can be removed by turning the rubber cap and pulling it in the direction of arrow c .
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