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SERVICE MANUAL
SPECIFICATIONS
MICROFILM
CHASSIS
US Model
Canadian Model
AEP Model
Chassis No. SCC-L32B-A
TFT LCD COLOR COMPUTER DISPLAY
SDM-N50R
ST5
Mass
Display (with stand):
Approx. 1.75 kg (3 lb 140 oz)
Media engine (with stand):
Approx. 0.85 kg (1 lb 14 oz)
Plug & Play
DDC1/DDC2B/DDC2Bi
Accessories
See page 8.
LCD panel
Panel type: a-Si TFT Active Matrix
Picture size: 15 inch (38 cm)
Input signal format
RGB operating frequency*
Horizontal: 30 ­ 61 kHz
Vertical: 48 ­ 85 Hz (only XGA mode
at 75 Hz)
Resolution
Horizontal: Max.1024 dots
Vertical: Max.768 lines
Input signal levels
RGB video signal
0.700 Vp-p, 75
, positive
SYNC signal
TTL level, 2 k
,
positive or negative
(Separate horizontal and vertical,
or composite sync)
0.3 Vp-p, 75
, negative
(Sync on green)
Headphones jack
Stereo minijack
Accepts impedance of more than 16
AUDIO IN jack
Stereo minijack
Accepts impedance of 47 k
Accepts level 0.5 Vrms
Power requirements
100 ­ 240 V, 50 ­ 60 Hz,
0.45 ­ 0.25 A
Power consumption
Max. 28 W
Operating temperature
5 ­ 35 °C
Dimensions (width/height/depth)
Display (without stand):
Approx. 356
× 280 × 26 mm
(14 1/16
× 11 1/6 × 1 1/16 inches)
Display (with stand, at maximum
angle: 40 °):
Approx. 356
× 225 × 203 mm
(14 1/16
× 8 7/8 × 8 inches)
Media engine (without stand):
Approx. 45
× 180 × 180 mm
(1 3/4
× 7 1/8 × 7 1/8 inches)
Media engine (with stand):
Approx. 94
× 185 × 180 mm
(3 11/16
× 7 1/4 × 7 1/8 inches)
pg
* Recommended horizontal and vertical timing condition
· Horizontal sync width duty should be more than 4.8% of total
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.
y
· LCD display
· Media engine
· Display stand
· Media engine stand
· Power cord
· System connecting cable (2 m)
(applicable cable type: DP-2)
· HD15 (RGB) video signal cable
· Audio cord (stereo miniplug)
· Macintosh adapter
· Windows Monitor Information Disk/Utility Disk
· Macintosh Utility Disk
· Software for use when installing the display vertically
(WinPortrait/MacPortrait)
· Warranty card
· Notes for Macintosh users
· This instruction manual


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SDM-N50R(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
0.15
µF
AC
Voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
SAFETY CHECK-OUT


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SDM-N50R(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. 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.


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SDM-N50R(E)
4
POWER SAVING FUNCTION
Power saving function (user sensor/power saving mode)
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 enter the power
saving mode. It automatically enters the low power consumption mode when the user sensor detects the absence of a user.
Power consumption state
Power consumption
AC power indicator
1 (power) indicator
normal operation
35 W
green
green
1 low power consumption mode
4 W
green
green and orange alternate
2 power saving mode
3 W
orange
orange
1 (power): off
3 W
red
off
AC power: off
0 W
off
off


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SDM-N50R(E)
5
DIAGNOSIS
Factorical preservation register
LED
LED indicates
Display part trouble
SHUTDOWN_LOG1 bit4 (16)
Part of the body only
Red (0.5 sec) and Off (0.5 sec)
Backlight trouble
SHUTDOWN_LOG1 bit2 (4)
Parts of the body and the display
Amber (0.5 sec) and Off (1.5 sec)
Body temperature trouble
SHUTDOWN_LOG1 bit3 (8)
Parts of the body and the display
Amber (1.0 sec) and Off (1.0 sec)
5V voltage anomalous
SHUTDOWN_LOG1 bit5 (32)
Parts of the body and the display
Amber (1.5 sec) and Off (0.5 sec)
3.3V voltage anomalous
SHUTDOWN_LOG1 bit6 (64)
Parts of the body and the display
Amber (1.5 sec) and Off (0.5 sec)
*Aging mode ........................................... No input signal and press CONT key for longer than 2 second.