HMD-A200, HMD-A220 (serv.man2) - Sony Audio Service Manual (repair manual). Page 9

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12
Additional settings
(DEGAUSS/CANCEL MOIRE)
You can manually degauss (demagnetize) the screen, and cancel 
the moire.
1
Press the center of the control button.
The main MENU appears on the screen.
2
Move the control button 
m
/
M
 to highlight 
 
DEGAUSS/CANCEL MOIRE and press the center of 
the control button again.
The DEGAUSS/CANCEL MOIRE menu appears on the 
screen.
3
Move the control button 
m
/
M
 to select the desired 
adjustment item.
Adjust the selected item according to the following 
instructions.
Degaussing the screen
The monitor is automatically demagnetized when the power is 
turned on.
To manually degauss the monitor, first move the 
control button 
m
/
M
 to select 
 (DEGAUSS). Then move 
the control button 
,
.
The screen is degaussed for about 5 seconds. If a second degauss 
cycle is needed, allow a minimum interval of 20 minutes for the 
best result.
Cancelling the moire
*
If elliptical or wavy patterns appear on the screen, adjust the 
moire cancellation level.
To adjust the amount of moire cancellation, first move 
the control button 
m
/
M
 to select 
 (CANCEL MOIRE). 
Then move the control button 
<
/
,
 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.
Resetting the adjustments (RESET)
This monitor has the following two reset methods. Use the 
RESET menu to reset the adjustments.
1
Press the center of the control button.
The main MENU appears on the screen.
2
Move the control button 
m
/
M
 to highlight 
0
 RESET 
and press the center fo the control button again.
The RESET menu appears on the screen.
Reset the settings according to the following instructions.
Resetting all of the adjustment data for the 
current input signal (MODE)
Move the control button 
<
The MODE item is selected. All of the adjustment data for the 
current input signal is reset. 
Note that the following items are not reset by this method.
• on-screen menu language (page 8)
• picture’s rotation (page 11)
Resetting all of the adjustment data to factory 
preset levels (ALL)
Move the control button 
,
The ALL item is selected. All of the adjustment data for the 
current input signal is reset. All of the adjustment data (except for 
the USER settings in the COLOR menu) is reset to the factory 
preset levels.
Note
The monitor
s buttons will not operate for about 5 seconds when ALL is 
selected.
MENU
Example of moire
13
GB
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 – 70 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.
Note for Windows users
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.
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.
* Figures reflect power consumption when no USB compatible 
peripherals are connected to the monitor.
**When your computer enters the “active off” mode, the input signal is 
cut and NO INPUT SIGNAL appears on the screen. After 20 seconds, 
the monitor enters the power saving mode.
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.
On-screen messages
If there is something wrong with the input signal, one of the 
following messages appears on the screen. To solve the problem, 
see “Trouble symptoms and remedies” on page 14.
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 being input to the monitor.
Power mode
Power 
consumption
*
1
 (power) indicator
normal 
operation
 115 W
(HMD-A200)
 95 W
(HMD-A100)
green
1 standby
 15 W
green and orange 
alternate
2 suspend
 15 W
green and orange 
alternate
3 active off**
 5 W
orange
power off
0 W
off
Damper wires
INFORMATION
OUT  OF  SCAN  RANGE
Input signal condition
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