Sony SDM-S51 Manuale utente
SERVICE MANUAL
SPECIFICATIONS
SDM-S51
TFT LCD Color Computer DISPLAY
US Model
Canadian Model
AEP Model
LCD panel Panel type: a-Si TFT Active Matrix
Picture size: 15.0 inch
Input signal format RGB operating frequency*
Horizontal: 28 - 60 kHz
Vertical: 48 - 75 Hz
Resolution Horizontal: Max.1024 dots
Vertical: Max.768 lines
Input signal levels RGB video signal
0.7 Vp-p, 75Ω, positive
SYNC signal
TTL level, 2.2 k ,
positive or negative
(Separate horizontal and vertical,
or composite sync)
0.3 Vp-p, 75Ω, negative
(Sync on green)
Power requirements 100 - 240 V, 50 - 60 Hz,
Max. 0.56A
DC input DC 12 V (supplied AC adapter)
Power consumption Max. 25 W
Operating temperature 5 - 35 °C
Ω
Dimensions (width/height/depth)
Display (upright):
Approx. 387 330 175 mm
(15
1
/
4
13
7inches)
(with stand)
Approx. 387 281 48 mm
(15
1
/
4
×11
1
/
8
1
15
/
16
inches)
(without stand)
Mass Approx. 3.7 kg ( 8 lb 3 oz) (with
stand)
Approx. 2.9 kg (6 lb 5 oz)
(without stand)
Plug & Play DDC2B
Accessories See page 7.
* Recommended horizontal and vertical timing condition
Horizontalsyncwidthdutyshouldbemorethan4.8%oftotal
horizontal time or 0.8 µs, whichever is larger.
Horizontal blanking width should be more than 2.5 µsec.
Vertical blanking width should be more than 450 µsec.
Design and specifications are subject to change without notice.
××
×
×
××
×
SDM-S51(E) 2
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 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA WT-
540A. Follow the manufacturers’ instructions to use these instruments.
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 must have an accurate low-voltage scale. The Simpson 250
and Sanwa SH-63Trd are examples of a passive VOMs that are suitable.
Nearly all battery operated digital multimeters that have a 2 V AC range
are suitable. (See Fig. A)
After correcting the original service problem, perform the following safety
checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly-soldered
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 have been replaced. Be absolutely certain that you
have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly transistors, that
were installed during a previous repair. Point them out to the customer
and recommend their replacement.
5. Look for 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 values. Make sure your
instruments are accurate; be suspicious of your HV meter if sets always
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 right.
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k
Ω
0.15 µFAC
Voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
SAFETY CHECK-OUT
SDM-S51(E) 3
WARNING!!
NEVER TURN ON THE POWER IN A CONDITION IN WHICH THE
DEGAUSS COIL HAS BEEN REMOVED.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK !ON THE
SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE
PARTS 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 ADJUST-
MENTS THAT ARE CRITICAL FOR SAFE OPERATION ARE
IDENTIFIED IN THIS MANUAL. FOLLOW THESE PROCEDURES
WHENEVER CRITICAL COMPONENTS ARE REPLACED OR IM-
PROPER OPERATION IS SUSPECTED.
AVERTISSEMENT!!
NE JAMAIS METTRE SOUS TENSION QUAND LA BOBINE DE
DEMAGNETISATION EST ENLEVÉE.
ATTENTION AUX COMPOSANTS RELATIFS À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE TRAME ET UNE
MARQUE !SONT CRITIQUES POUR LA SÉCURITÉ. NE LES
REMPLACER QUE PAR UNE PIÈCE PORTANT LE NUMÉRO
SPECIFIÉ.LESRÉGLAGES DECIRCUITDONTL’IMPORTANCEEST
CRITIQUE POUR LA SÉCURITÉ DU FONCTIONNEMENT SONT
IDENTIFIÉS DANS LE PRÉSENT MANUEL. SUIVRE CES
PROCÉDURES LORS DE CHAQUE REMPLACEMENT DE
COMPOSANTS CRITIQUES, OU LORSQU’UN MAUVAIS
FONCTIONNEMENT EST SUSPECTÉ.
SDM-S51(E) 4
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 as shown below.
SDM-S51
* 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.
** deep sleep is the power saving mode defined by the Environmental
Protection Agency.
Power mode Power consumption 1(power)
indicator
normal
operation 25 W (max.) green
active off*
(deep sleep)** 3 W (max.) orange
power off 3 W (max.) off
SDM-S51(E) 5
AUTOMATIC PICTURE QUALITY ADJUSTMENT FUNCTION
When the monitor receives an input signal, it automatically
matches the signal to one of the factory preset modes stored in the
monitor,smemory 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 automatic picture quality adjustment function of this
monitor automatically adjusts the picture position, phase, and
pitch, and ensures that a clear picture appears on the screen for
any timing within themonitor,s frequency range (horizontal: 28 -
60kHz , vertical:48 - 75 Hz ).
Consequently, the first time the monitor receives input signals
that do not match one of the factory preset modes, the monitor
may take a longer time than normal for displaying the picture on
the screen. This adjustment data is automatically stored in
memory so that next time, the monitor will function in the same
way as when the monitor receives the signals that match one of
the factory preset modes.
In all modes as above, 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
While the automatic picture quality adjustment function is activated, only
the (power) switch will operate.
SDM-S51(E) 6
1. DISASSEMBLY
1-1. Back Cabinet and TFT Panel Removal ................ 1-1
1-2. Keyboard Mount Removal ................................... 1-2
1-3. Inverter Mount Removal ...................................... 1-3
1-4. I/F Board Removal ............................................... 1-4
1-5. TFT Panel Removal .............................................. 1-5
2. ADJUSTMENTS
2-1. Functional Alignment (1) ..................................... 2-1
2-2. Functional Alignment (2) ..................................... 2-2
2-3. Table 1&2 ............................................................ 2-3
2-4. Timing Specification ............................................ 2-4
2-5. W/B Alignment Procedure.................................... 2-5
3. DIAGRAMS
3-1. Circuit Boards Location........................................ 3-1
TABLE OF CONTENTS
Section Title Page Section Title Page
4. EXPLODED VIEWS
4-1. Chassis ................................................................. 4-2
4-2. Packing Materials ................................................. 4-3
5. ELECTRICAL PARTS LIST ............................... 5-1
SDM-S51(E) 1-1
SECTION 1
DISASSEMBLY
1-1. BACK CABINET AND TFT PANEL REMOVAL
1Four screws
(+PVTP 4x12)
2Back cabinet
3TFT panel
SDM-S51(E) 1-2
1-2. KEYBOARD MOUNT REMOVAL
2Four screws
(+PVTP 3x10)
1Screw
(+PWH 3x4)
3Keyboard mount
SDM-S51(E) 1-3
1-3. INVERTER MOUNT REMOVAL
1Two screws
(+PWH 3x4)
3Two screws
(+PWH 3x4)
5Inverter mount
2Inverter cover
6CN1
6CY2
6CN2
4Inverter shield
SDM-S51(E) 1-4
1-4. I/F BOARD REMOVAL
1Three screws
(+PWH 3x4)
2I/F cover
3Three screws
(+PWH 3x4)
3Two screws
(+PWH 3x4)
6I/F board mount
5CN302A
5CN201
5CN501
4Two connector screws
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