SONY D99C CHASSIS
Service Manual

Helpful hints and information (HELP)
The HELP menu contains helpful hints and information about this monitor. If your monitor is displaying symptoms that match those listed in the HELP menu, follow the on-screen instructions to resolve the problem. If the symptoms do not match those listed in the HELP menu or if the problem persists, see �Trouble symptoms and remedies� on page 14.

OUT OF FOCUS
The picture may seem to be out of focus when the red and blue color signals are not aligned properly, causing red or blue shadows to appear around letters and lines. Try adjusting the picture�s convergence to make the shadows disappear. Move the control button , to jump directly to the CONVERGENCE menu. When the CONVERGNECE menu is displayed, the contrast, brightness and moire adjustment settings are automatically reset for all input signals.

Technical Features
Preset and user modes
When the monitor receives an input signal, it automatically matches the signal to one of the factory preset modes stored in the monitor�s memory to provide a high quality picture at the center of the screen. (See Appendix for a list of the factory preset modes.) For input signals that do not match one of the factory preset modes, the digital Multiscan technology of this monitor ensures that a clear picture appears on the screen for any timing in the monitor�s frequency range (horizontal: 30 � 85 kHz, vertical: 48 � 120 Hz). If the picture is adjusted, the adjustment data is stored as a user mode and automatically recalled whenever the same input signal is received.

Troubleshooting
Before contacting technical support, refer to this section.

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.
Damper wires

DISCOLORATION 1 Press the center of the control button.
The main MENU appears on the screen. If the picture�s color appears abnormal in certain areas of the screen, first check for any loose signal cables. After you have checked the cables, try degaussing (demagnetizing) the screen manually. Move the control button , to jump directly to the OPTION menu, then select (DEGAUSS).

2 Move the control button to highlight

HELP and press the center of the control button again. The following HELP menu appears on the screen.
HE L P RE TURN TO MA I N MENU RECOMMENDED RESOL UT I ON F L I CKER TH I N HOR I ZONT A L L I NE D I S TORT ED SHAPE OUT OF FOCUS D I SCOLORA T I ON

Resetting the adjustments
Note for Windows users
This monitor has the following three reset methods. Use the RESET button to reset the adjustments. For Windows users, check your video board manual or the utility program which comes with your graphic board and select the highest available refresh rate to maximize monitor performance.

RESET

3 Move the control button m/M to select a HELP menu
item and press the center of the control button again. Instructions or information to resolve the problem appears on the screen. An explanation of each menu item is given below.

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 Power consumption � 120 W � 15 W � 15 W �3W 0W 1 (power) indicator green green and orange alternate green and orange alternate orange off

On-screen messages
If no picture appears on the screen, one of the following messages appears on the screen. To solve the problem, see �Trouble symptoms and remedies� on page 14.
INFORMATION OUT OF SCAN RANGE

US

Resetting a single adjustment item
Use the control button to select the adjustment item you want to reset, and press the RESET button.

RECOMMENDED RESOLUTION
If the picture does not fill the screen to the edges or if the picture appears too large for the screen, adjust the resolution to the figures shown in the menu using your computer. If the input signal matches one of this monitor�s factory preset modes, the resolution and refresh rate of the current input signal are displayed.
RECOMMENDED RESOL UT I ON SE T RESOL UT I ON TO 1 0 2 4 X 7 6 8 A T 8 5 H z US I NG PC . CURRENT SE T T I NG I S 1 2 8 0X1 0 2 4 AT 7 5Hz .

Resetting all of the adjustment data for the current input signal
Press the 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) � on-screen menu position (page 11) � control lock (page 11)

Input signal condition

normal operation 1 standby 2 suspend (sleep)* 3 active off** (deep sleep)* power off

The input signal condition OUT OF SCAN RANGE indicates that the input signal is not supported by the monitor�s specifications. NO INPUT SIGNAL indicates that no signal is input. MONITOR IS IN POWER SAVE MODE indicates that the computer is in power saving mode. This message is displayed only when your computer is in a power saving mode and you press any one of the buttons on the monitor.

FLICKER
If the picture is flickering, adjust the refresh rate to figures shown in the menu. If the input signal matches one of this monitor�s factory preset modes, the refresh rate of the current input signal is displayed.
F L I CKER SE T RE FRESH RA T E TO 7 5 H z OR 8 5 H z US I NG PC . CURRENT SE T T I NG I S 6 0 H z .

Resetting all of the adjustment data for all input signals
Press and hold the RESET button for more than two seconds.
Note The RESET button does not function when

(CONTROL LOCK)

* �Sleep� and �deep sleep� are power saving modes defined by the Environmental Protection Agency. ** When your computer is in a power saving mode, MONITOR IS IN POWER SAVE MODE appears on the screen if you press any button on the monitor. After a few seconds, the monitor enters the power saving mode again. ��� Power consumption of 0 W is acheivable by disconnecting the power cord from the power outlet.

is set to ON.

THIN HORIZONTAL LINE
The lines that appear on your screen are damper wires. See page 13 for more information about the damper wires.

DISTORTED SHAPE
If the shape of the picture on the screen seems distorted, try adjusting the picture�s geometry. Move the control button , to jump directly to the GEOMETRY menu.