DOWNLOAD Sony SDM-M51 Service Manual ↓ Size: 763.15 KB | Pages: 36 in PDF or view online for FREE

Model
SDM-M51
Pages
36
Size
763.15 KB
Type
PDF
Document
Service Manual
Brand
Device
Monitor / S/M SDM-M51 00 US CAN AEP
File
sdm-m51.pdf
Date

Sony SDM-M51 Service Manual ▷ View online

SERVICE MANUAL
SPECIFICATIONS
US Model
Canadian Model
AEP Model
TFT LCD COLOR COMPUTER DISPLAY
SDM-M51
LCD panel
Panel type: a-Si TFT Active Matrix
Picture size: 15.1 inch
Input signal format
RGB operating frequency*
Horizontal: 28 – 64 kHz
Vertical: 48 – 75 Hz
Resolution
Horizontal: Max.1024 dots
Vertical: Max.768 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) 
Audio output
1 W 
×
 2
Headphones jack
Stereo minijack
Accepts impedance of 16 – 48 
AUDIO IN jack
Stereo minijack
Accepts impedance of 47 k
Accepts level 0.5 Vrms
Power requirements
100 – 240 V, 50 – 60 Hz, 
0.4 – 0.2 A
DC input
DC 18 V (supplied AC adapter)
Power consumption
Max. 19 W
Max. 22 W (including AC adapter) 
Operating temperature
5 – 35 
˚
C
Dimensions (width/height/depth)
Display (upright): 
Approx. 387 
×
 345 
×
 180 mm
(15 
1
/
4
 
×
 13 
5
/
×
 7 
1
/
8
 inches) 
(with stand)
Approx. 387 
×
 296 
×
 48 mm
(15 
1
/
4
 
×
 11 
3
/
×
 1 
15
/
16
 inches) 
(without stand)
Mass
Approx. 4.6 kg (10 lb 14 oz) (with 
stand)
Plug & Play
DDC1/DDC2B/DDC2Bi
Accessories
See page 7.
* 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.
SDM-M51
– 2 –
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.
*
“deep sleep” is the power saving mode defined by the Environmental 
Protection Agency.
** 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. 
*** If the horizontal or vertical sync signal is received by the monitor, the 
power indicator may alternately blink green and orange. 
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’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 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 the monitor’s frequency range (horizontal: 28 – 
64 kHz, 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 1 (power) switch will operate.
Power mode
Power 
consumption
*
1
 (power) 
indicator
normal 
operation
19 W (22 W)
green
active off**
(deep sleep)*
1 W (2 W)
orange***
power off
1 W (2 W)
off
SDM-M51
– 3 –
TIMING  SPECIFICATION
PRESET MODE
MODE 1
MODE 2
MODE 3
MODE 4
MODE 5
MODE 6
MODE 7
MODE 8
SIGNAL MODE
VESA 60Hz
MAC 66Hz
VESA 75Hz
VESA 70Hz
VESA 56Hz
VESA 60Hz
VESA 72Hz
VESA 75Hz
RESOLUTION
640 X 480
640 X 480
640 X 480
720 X 400
800 X 600
800 X 600
800 X 600
800 X 600
DOT CLOCK
25.175 MHz
30.240 MHz
31.500 MHz
28.350 MHz
36.000 MHz
40.000 MHz
50.000 MHz
49.500 MHz
HORIZONTAL
usec
usec
usec
usec
usec
usec
usec
usec
H. TOTAL
31.778
28.571
26.667
31.746
28.444
26.400
20.800
20.110
H. SYNC
3.813
2.116
2.032
3.810
0.889
3.200
2.400
1.616
H. BP
1.907
3.175
3.810
1.905
4.667
2.200
1.280
3.232
H. ACTIV
25.422
21.164
20.317
25.397
22.222
20.000
16.000
16.162
VERTICAL
msec
msec
msec
msec
msec
msec
msec
msec
V. TOTAL
16.683
15.000
13.333
14.254
17.778
16.579
13.853
13.333
V. SYNC
0.064
0.086
0.080
0.095
0.057
0.106
0.125
0.064
V. BP
1.049
1.114
0.427
1.079
0.626
0.607
0.478
0.448
V. ACTIV
15.253
13.714
12.800
12.698
17.067
15.840
12.480
12.800
H/V POLARITY
N/N
N/N
N/N
N/P
N/N
P/P
N/N
P/P
PRESET MODE
MODE 9
MODE 10
MODE 11
MODE 12
MODE 13
SIGNAL MODE
PMAC 16"
VESA 60Hz
VESA 70Hz
VESA 75Hz
MAC 768 75Hz
RESOLUTION
832X 624
1024X 768
1024X 768
1024X 768
1024X 768
DOT CLOCK
57.285 MHz
65.000 MHz
75.000 MHz
78.750 MHz
80.000 MHz
HORIZONTAL
usec
usec
usec
usec
usec
H. TOTAL
20.110
20.677
17.707
16.660
16.600
H. SYNC
1.117
2.092
1.813
1.219
1.200
H. BP
3.910
2.462
1.920
2.235
2.200
H. ACTIV
14.524
15.754
13.653
13.003
12.800
VERTICAL
msec
msec
msec
msec
msec
V. TOTAL
13.413
16.666
14.272
13.328
13.346
V. SYNC
0.060
0.124
0.106
0.050
0.050
V. BP
0.744
0.600
0.513
0.466
0.498
V. ACTIV
12.549
15.880
13.599
12.795
12.749
H/V POLARITY
N/N
N/N
N/N
P/P
N/N
SDM-M51
– 4 –
LEAKAGE  TEST
The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part hav-
ing a return to chassis, must not exceed 0.5 mA (500
microampers).
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” indica-
tion 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)
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 AP-
PEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE-
MENTS 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 IMPROPER OPERATION IS SUS-
PECTED.
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 CRI-
TIQUES, OU LORSQU’UN MAUVAIS FONCTIONNEMENT
EST SUSPECTÉ.
After correcting the original service problem, perform the fol-
lowing safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly-sol-
dered 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 tran-
sistors, 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 below.
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY  CHECK-OUT
1.5 k
0.15 
µ
F
AC
Voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Page of 36
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  • DOWNLOAD Sony SDM-M51 Service Manual ↓ Size: 763.15 KB | Pages: 36 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony SDM-M51 in PDF for free, which will help you to disassemble, recover, fix and repair Sony SDM-M51 Monitor. Information contained in Sony SDM-M51 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.