DOWNLOAD Sony SDM-S91 Service Manual ↓ Size: 202.91 KB | Pages: 16 in PDF or view online for FREE

Model
SDM-S91
Pages
16
Size
202.91 KB
Type
PDF
Document
Service Manual
Brand
Device
Monitor
File
sdm-s91.pdf
Date

Sony SDM-S91 Service Manual ▷ View online

SERVICE MANUAL
SPECIFICATIONS
SDM-S91
TFT LCD Color Computer DISPLAY
US Model
Canadian Model
AEP Model
Dimensions (width/height/depth)
Display (upright): 
Approx. 458 
×
 421 
×
 235 mm
(18 
×
 16 
1
/
 ×
 9 
1
/
4
 inches) 
(with stand)
Approx. 458 
×
 370 
×
 64 mm
(18 
×
 14 
1
/
×
 2 
1
/
2
 inches) 
(without stand)
Mass
Approx. 7.3 kg (16 lb 2 oz) (with 
stand)
Approx. 5.6 kg (12 lb 6 oz) 
(without stand)
Plug & Play
DDC2B
* Recommended horizontal and vertical timing condition
• Horizontal sync width duty should be more than 4.8% of total 
horizontal time or 0.8 
µ
s, whichever is larger.
• Horizontal blanking width should be more than  2.5 
µ
sec.
• Vertical blanking width should be more than  450 
µ
sec.
Design and specifications are subject to change without notice.
LCD panel
Panel type: a-Si TFT Active Matrix
Picture size: 19.0 inch
Input signal format
RGB operating frequency*
Horizontal: 28 – 92 kHz
Vertical: 48 – 85 Hz
Resolution
Horizontal: Max.1280 dots
Vertical: Max.1024 lines
Input signal levels
RGB video signal
0.7 Vp-p, 75 
, positive
SYNC signal
TTL level, 2.2 k
positive or negative
(Separate horizontal and vertical, 
or composite sync)
0.3 Vp-p, 75
, negative 
(Sync on green) 
Power requirements
100 – 240 V, 50 – 60 Hz, 
Max. 1.5 A
DC input
DC 12 V (supplied AC adapter)
Power consumption
Max. 50 W
Operating temperature
5 – 35 
°
C
SDM-S91(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 connector shell, metal trim, “metallized” knobs, screws, and
all other exposed metal parts for AC Leakage. Check leakage as de-
scribed right.
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k
0.15 
µ
F
AC
Voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
SAFETY  CHECK-OUT
SDM-S91(E)
3
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.
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. LES RÉGLAGES DE CIRCUIT DONT L’IMPORTANCE EST
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-S91(E)
4
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 as shown below.
*
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. 
*** If only the horizontal or vertical sync signal is input to the monitor, 
the power indicator may alternately flash green and orange. 
Power mode
Power consumption
1
 (power) 
indicator
normal 
operation
50 W (max.)
green
active off*
(deep sleep)**
3 W (max.) 
orange***
power off
3 W (max.) 
off
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Sony SDM-S91 Service Manual ▷ Download

  • DOWNLOAD Sony SDM-S91 Service Manual ↓ Size: 202.91 KB | Pages: 16 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony SDM-S91 in PDF for free, which will help you to disassemble, recover, fix and repair Sony SDM-S91 Monitor. Information contained in Sony SDM-S91 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.