Technical Features; Troubleshooting - Sony Trinitron GDM-FW900 Service Manual

Resetting the adjustments
This monitor has the following three reset methods. Use the
RESET button to reset the adjustments.
RESET
x Resetting a single adjustment item
Use the joystick to select the adjustment item you want to reset,
and press the RESET button.
x 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 8)
• adjustment mode in the COLOR menu (EASY, EXPERT,
sRGB) (page 12)
• on-screen menu position (page 15)
• control lock (page 15)
x Resetting all of the adjustment data for all
input signals
Press and hold the RESET button for more than 2 seconds.
Note
The RESET button does not function when (CONTROL LOCK) is
set to ON.
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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 – 121 kHz, vertical: 48 – 160 Hz).
If the picture is adjusted, the adjustment data is stored as a user
mode and automatically recalled whenever the same input signal
is received.
Note for Windows users
For Windows users, check your graphic board manual or the
utility program which comes with your graphic board and select
the highest available refresh rate to maximize monitor
performance.
Power saving function
This monitor meets the power-saving guidelines set by VESA,
E NERGY S TAR, and NUTEK. If 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 ! (power)
consumption* indicator
≤ 170 W
normal green
operation
≤ 15 W
1 standby green and orange
alternate
≤ 15 W
2 suspend green and orange
(sleep)** alternate
≤ 1 W
3 active off*** orange
(deep sleep)**
power off 0 W off
* Figures reflect power consumption when no USB compatible
peripherals are connected to the monitor.
** "Sleep" and "deep sleep" are power saving modes defined by the
Environmental Protection Agency.
*** When your computer enters power saving mode, the input signal is
cut and NO INPUT SIGNAL appears on the screen before the
monitor enters active off mode. After a few seconds, the monitor
enters power saving mode.

Troubleshooting

Before contacting technical support, refer to this section.
If thin lines appear on your screen
(damper wires)
The visible lines on your screen especially when the background
screen color is light (usually white), are normal for the Trinitron
monitor. This is not a malfunction. These are shadows from the
damper wires used to stabilize the aperture grille. The aperture
grille is the essential element that makes a Trinitron picture tube
unique by allowing more light to reach the screen, resulting in a
brighter, more detailed picture.
Damper wires
On-screen messages
If there is something wrong with the input signal, one of the
following messages appears on the screen.
If NO INPUT SIGNAL appears on line 1
This indicates that no signal is input from the selected connector.
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 BY COMPUT R E
CHECK I NPUT SE L ECT R O
CHECK S I GNA L CAB L E
WH I T E
RED
GREEN
B L UE
2 The selected connector
This message shows the currently selected connector
(INPUT 1 or INPUT 2).
3 The remedies
One or more of the following messages may appear on the
screen.
• If ACTIVATE BY COMPUTER appears on the screen, try
pressing any key on the computer or moving the mouse, 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 9).
• If CHECK SIGNAL CABLE appears on the screen, check
that the monitor is correctly connected to the computer
(page 6).
If OUT OF SCAN RANGE appears on line 1
This indicates that the input signal is not supported by the
monitor's specifications.
I NFORMA T I ON
MON I TOR I S WORK I NG
I NPUT 1 : 1 3 0 . 0 k H z / 7 5 H z
OUT OF SCAN RANGE
CHANGE S I GNA L T I M I NG
WH I T E
RED
GREEN
B L UE
2 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.
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 so 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 18.
Displaying this monitor's name, serial number,
and date of manufacture.
While the monitor is receiving a video signal, press and hold the
joystick for more than 5 seconds to display this monitor's
information box.
Example
INFORMATION
b
MODEL : GDM FW900
SER NO : 1234567
MANUFACTURED : 2000-52
If the problem persists, call your authorized Sony dealer and give
the following information.
• Model name: GDM-FW900
• Serial number
• Name and specifications of your computer and graphic board.
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