Sony CPD-200SF/200SFT Service Manual

Models: CPD-200SF, CPD-200SFT

Brand: Sony

Product Type: Color Computer Display

Specifications

Picture tube	0.25 mm aperture grille pitch 17 inches measured diagonally 90-degree deflection
Viewable image size	Approx. 327 x 241 mm (w/h) (12 7/8 x 9 1/2 inches) 15.9" viewing image
Logical resolution	Horizontal: Max. 1280 dots Vertical: Max. 1024 lines
Physical resolution	Horizontal: Max. 1280 dots Vertical: Max. 1024 lines
Standard image area	Approx. 312 x 234 mm (w/h) (12 3/8 x 9 1/4 inches)
Deflection frequency	Horizontal: 30 to 80 kHz Vertical: 50 to 120 Hz
AC input voltage/current	100 to 240 V, 50-60 Hz, 2-1A
Dimensions	Approx. 406 x 426.5 x 451 mm (w/h/d) (16 x 16 7/8 x 17 7/8 inches)
Mass	Approx. 19 kg (41 lb 14 oz)

Diagnosis and Power Saving

The monitor supports power saving features compliant with ENERGY STAR and TCO92 guidelines, utilizing Display Power Management Signaling (DPMS). It automatically reduces power consumption when no sync signal is detected from the computer.

Diagnosis Modes:

Aging Mode: Raster aging
Self Test: OSD color-bar indication

Power Saving States:

Normal Operation: 100% power consumption.
Suspend (1st step): Approx. 10% power consumption, indicated by a blinking Power Saving LED. Resumes in approx. 3 seconds.
Active-off (2nd step): Approx. 7% power consumption, indicated by an orange Power Saving LED. Resumes in approx. 10 seconds.
Power-off: For 0W consumption, unplug the power cord.

Safety Check-out and Leakage Test

After service, perform safety checks including verifying connections, ensuring all parts are replaced, checking line cords, and verifying B+/HV levels. AC leakage from exposed metal parts to earth ground must not exceed 0.5 mA (500 microamperes).

WARNING: Never turn on the power with the degauss coil removed. Safety-related components are critical and must be replaced with specified Sony parts.

The leakage test can be performed using a commercial leakage tester, an AC milliammeter, or by measuring voltage drop across a resistor (limit 0.75 V).

Troubleshooting

This section helps isolate problems without contacting technical support. Common issues and their solutions include:

No Picture: Check power cord, power switch, video cable connection, and ensure pins are not bent. Verify video sync signal compatibility.
Picture is Scrambled: Check graphics board manual for proper monitor settings and ensure video sync pulse is adequate.
Color is Not Uniform: Move monitor away from magnetic field sources or activate Auto-degauss cycle.
Picture is Flickering: Adjust the computer's refresh rate to the highest possible non-interlace mode.
Screen Image Not Centered/Sized Properly: Adjust "CENTER", "SIZE", or "GEOMETRY" via OSD. Some video modes may not fill the screen edge-to-edge.
Picture is Fuzzy: Adjust "CONTRAST" and "BRIGHTNESS". Some SVGA boards may have excessive video output. Activate Auto-degauss cycle.
Picture Bounces/Wavy Oscillations: Isolate and eliminate electric/magnetic field sources (fans, fluorescent lights, printers). Increase distance from other monitors. Try a different AC outlet or circuit. Test on a different computer.
Picture Ghosting: Avoid video cable extensions or switch boxes.
Fine Horizontal Line: This is normal, stabilizing the Aperture Grille.
Wavy/Elliptical Pattern (Moire): May occur with certain screen backgrounds due to resolution/monitor pitch. Change desktop pattern.
"Boon" Noise on Startup: This is normal, caused by the auto-degauss cycle.

Adjustments

Picture adjustments can be made via the OSD (On-Screen Display) for individual input signals or common settings:

Picture Brightness: Adjusts common setting.
Picture Contrast: Adjusts common setting.
Picture Size: Adjusts individual settings for input signal.
Picture Centering: Adjusts individual settings for input signal.
Picture Rotation: Adjusts common setting.
Picture Pincushion: Adjusts individual settings for input signal.
Color Temperature: Adjusts common setting (5000K to 9300K).

All adjustments can be reset to factory presets.

Disassembly

The manual provides detailed procedures for disassembling the monitor, including:

Cabinet Removal
Service Position setup
A Board Removal
D Board Removal (CPD-200SF and CPD-200SFT variants)
Picture Tube Removal
Anode-Cap Handling

Diagrams, Schematics, and Parts Lists

This service manual includes comprehensive technical documentation essential for repair and maintenance:

Block Diagram: Illustrates the overall signal flow and system architecture.
Schematic Diagrams: Detailed circuit diagrams for the D Board and A Board, showing component interconnections.
Circuit Boards Location: Diagrams indicating the physical placement of boards within the monitor.
Exploded Views: Visual breakdowns of the chassis (CPD-200SF and CPD-200SFT) and packing materials, with numbered components.
Semiconductor Lists: Identification of semiconductors used, with part numbers and board locations.
Electrical Parts List: An extensive list of all components, including part numbers, descriptions, and remarks, crucial for ordering replacements.

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