Sony Tft Monitor Sdm N80 Chassis Slm1 Service Manual

							CHASSIS
SERVICE MANUAL
SPECIFICATIONS
SDM-N80
SLM1
US Model
Canadian Model
AEP Model
Chassis No. SCC-L37A-A
TFT LCD COLOR COMPUTER DISPLAY
LCD panel Panel type: a-Si TFT Active Matrix
Picture size: 18.1 inch (46 cm)
Input signal format RGB operating frequency*
Horizontal: 28 – 107 kHz (analog
RGB signal)
28-92 kHz (digital RGB signal)
Vertical: 48 – 85 Hz**
Resolution** Horizontal: Max.1280 dots
Vertical: Max.1024 lines
Video input connector Analog RGB: HD15
Digital/analog RGB: DVI-I 29 pins
Input signal levels Analog RGB video signal
0.700 Vp-p, 75
Ω, positive
SYNC signal
TTL level, 2 k
Ω,
positive or negative
(Separate horizontal and vertical,
or composite sync)
0.3 Vp-p, 75
Ω
Ω
Ω,negative
(Sync on green)
Digital RGB (DVI) video signal
TMDS (Single link)
Audio output 1 W×2
Headphones jack Stereo minijack
Accepts impedance of 16 – 48
AUDIO IN jacks Stereo minijack×2
Accepts impedance of 47 k
Acce
pts level 0.5 VrmsPower requirements 100 – 240 V, 50 – 60 Hz, 0.7 – 0.4 A
Power consumption Max. 67 W
Operating temperature 5 – 35
°C
Dimensions (w/h/d) Display (upright):
Approx. 432 400 195 mm
(17
1/8×153/4×73/4inches)
Media engine:
Approx. 94×212×204 mm
(3
3/4×83/8×81/8inches)
Mass Display:
Approx. 6.5 kg (14 lb 5 oz)
Media engine:
Approx. 1.5 kg (3 lb 5 oz)
Plug & Play DDC2B
* Recommended horizontal and vertical timing condition
 Horizontal sync width duty should be more than 4.8% of total
horizontal time or 0.8µs, whichever is larger.
 Horizontal blanking width should be more than 2.5µsec.
 Vertical blanking width should be more than 450µsec.
**A 1600×1200 resolution signal is acceptable only when it is a
digital RGB signal and its vertical frequency is 60 Hz.
Design and specifications are subject to change without notice. 
						

							SDM-N80 (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 below.Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k
Ω
0.15 µF
AC
Voltmeter
(0.75 V) To Exposed Metal
Parts on Set
Earth Ground
SAFETY  CHECK-OUT 
						

							SDM-N80 (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. 
						

							SDM-N80 (E) 4
POWER  SAVING  FUNCTIONThis 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.
*Fi
gures reflect
power consum
ption when the com
puter connected to the USB u
pstream connector on the monitor is turned off.
Power consumption state Power consumption AC power indicator (power) indicator
normal operation W green green
1 low power consumption mode W* green green and orange alternate
2 power saving mode W* orange orange
(power): off W red off
AC power: off 0 W off off
< 67
< 8.5
< 1.3
< 1 
						

							SDM-N80 (E) 5
1 Low power consumption mode (user sensor)When the user sensor in the monitor detects the absence of a user,
the monitor enters low power consumption mode after about 20
seconds. The icon of user sensor appears and flashes on the screen
before the monitor enters this mode. In low power consumption
mode, the monitor is in a power saving state and shuts off power
to all circuitry (except for that of the sensors) regardless of the
setting of the computer.
The monitor returns to normal operation mode when the presence
of a user is detected by the user sensor.
When the monitor enters the power saving mode (as set according
to the computer’s settings), the power saving mode takes
precedence over the low power consumption mode. In this case,
the monitor stays in the power saving mode regardless of the
presence or absence of a user.
To return the monitor to normal operation mode, reset the
computer’s power saving mode.
If the user sensor does not seem to function properly, refer to the
instructions on the next page.
2 Power saving modeDPMS defines the active off state according to the state of the
sync signals supplied from the computer. This monitor’s power
consumption is input at approximately 1.3 W or less in this state
if the power saving function is set to ON.
When your computer enters the power saving mode, the input
signal is cut and NO INPUT SIGNAL appears on the screen.
After a few seconds, the monitor enters power saving mode.*“Deep sleep”is a power saving mode defined by the Environmental
Protection Agency.
Notes
•The power saving function may not work normally depending on the
pattern of supplied sync signals. In such a case, set the power saving
function to OFF.
•When you connect a computer whose power is connected to the USB
upstream connector on the monitor, the monitor will not enter the
power saving mode.Power saving
stateSync signal state
active off (deep sleep)* horizontal: off / vertical: off 
						

							SDM-N80 (E) 6
DIAGNOSIS
Failre
+B failure
Horizontal / Vertical Deflectionfailure, Thermal protector
ABL protectorHV failureAging / Self TestOut of scan range
Power LED
Amber→Off
(0.5 sec) (0.5 sec)
Amber→Off(1.5 sec) (0.5 sec)
Amber→Off(0.5 sec) (1.5 sec)
Amber→Off→Amber→Off(0.25 sec) (0.25 sec) (0.25 sec) (1.25 sec)
Amber→Off→Green→Off(0.5 sec) (0.5 sec) (0.5 sec) (0.5 sec)
Green (OSD indication)
Aging mode: In the NO INPUT SIGNAL state with the POWER SAVE MODE in OFF state, press the MENU continuously for 10 
seconds. 
						

							SDM-N80 (E) 7
MODE AT PRODUCTION
RESOLUTIONCLOCK– HORIZONTAL –
H-FREQ
H. TOTAL
H. BLK
H. FP
H. SYNC
H. BPH. ACTIV– VERTICAL  –
V. FREQ (Hz)
V.  T O TA L
V. BLK
V.  F P
V. SYNC
V.  B PV. ACTIV– SYNC –
INT (G)
EXT (H/V) /POLARITY
EXT (CS) /POLARITY
NIT/NON INTTIMING  SPECIFICATION
MODE 0 MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6 MODE 7 MODE 8
640 X 480 640 X 480 640 X 480 640 X 480 720 X 400 720 X 400 720 X 480 800 X 60025.175 MHz 30.240 MHz 31.500 MHz 36.000 MHz 28.350 MHz 35.500 MHz 31.505 MHz 36.000 MHz
31.469 kHz 35.000 kHz 37.500 kHz 43.269 kHz 31.500 kHz 37.927 kHz #DIV/01 35.162 kHz 35.156 kHz
usec usec usec usec usec usec usec usec usec
31.778 28.571 26.667 23.111 31.746 26.366 #DIV/01 28.44 28.444
6.356 7.407 6.349 5.333 6.349 6.085 #DIV/01 5.586 6.222
0.636 2.116 0.508 1.556 0.635 1.014 #DIV/01 1.079 0.667
3.813 2.116 2.032 1.556 3.81 2.028 #DIV/01 1.27 2
1.907 3.175 3.81 2.222 1.905 3.042 #DIV/01 3.282 3.55625.422 21.164 20.317 17.778 25.397 20.282 #DIV/01 22.854 22.222
59.940 Hz 66.667 Hz 75.000 Hz 85.008 Hz 70.156 Hz 85.039 Hz #DIV/01 59.901 Hz 56.250 Hz
lines lines lines lines lines lines lines lines lines
525 525 500 509 449 446 #DIV/01 587 625
45 45 20 29 49 46 #DIV/01 107 25
10 3 1 1 12 1 #DIV/01 12 1
233333#DIV/01 2 2
33 39 16 25 34 42 #DIV/01 93 22480 480 480 480 400 400 #DIV/01 480 600
NO NO NO NO NO NO NO NO NO
YES N/N YES N/N YES N/N YES N/N YES N/P YES N/P YES YES N/N YES N/N
NO NO NO NO NO NO NO NO NO
NON INT NON INT NON INT NON INT NON INT NON INT NON INT NON INT NON INT 
						

							SDM-N80 (E) 8
MODE AT PRODUCTION
RESOLUTIONCLOCK– HORIZONTAL –
H-FREQ
H. TOTAL
H. BLK
H. FP
H. SYNC
H. BPH. ACTIV– VERTICAL  –
V. FREQ (Hz)
V.  T O TA L
V. BLK
V.  F P
V. SYNC
V.  B PV. ACTIV– SYNC –
INT (G)
EXT (H/V) /POLARITY
EXT (CS) /POLARITY
NIT/NON INT
MODE 9 MODE 10 MODE 11 MODE 12 MODE 13 MODE 14 MODE 15 MODE 16 MODE 17
800 X 600 800 X 600 800 X 600 800 X 600 848 X 480 832 X 624 1024 X 768 1024 X 768 1024 X 76840.000 MHz 49.500 MHz 56.250 MHz 57.299 MHz 49.847 MHz 57.285 MHz 65.000 MHz 75.000 MHz 78.750 MHz
37.879 kHz 46.875 kHz 53.674 kHz 54.675 kHz 45.900 kHz 49.727 kHz 48.363 kHz 56.476 kHz 60.023 kHz
usec usec usec usec usec usec usec usec usec
26.4 21.333 18.631 18.29 21.787 20.11 20.677 17.707 16.66
6.4 5.172 4.409 4.328 4.815 5.586 4.923 4.053 3.657
1 0.323 0.569 0.558 1.083 0.559 0.369 0.32 0.203
3.2 1.616 1.138 1.117 1.204 1.117 2.092 1.813 1.219
2.2 3.232 2.702 2.653 2.488 3.91 2.462 1.92 2.235
20 16.162 14.222 13.962 17.012 14.524 15.754 13.653 13.003
60.317 Hz 75.000 Hz 85.061 Hz 86.648 Hz 88.269 Hz 74.553 Hz 60.004 Hz 70.069 Hz 75.029 Hz
lines lines lines lines lines lines lines lines lines
628 625 631 631 520 667 806 806 800
28 25 31 31 40 43 38 38 32
111193331
433363663
23 21 27 27 25 37 29 29 28600 600 600 600 480 624 768 768 768
NO NO NO NO NO NO NO NO NO
YES P/P NO P/P YES P/P YES P/P YES P/P YES N/N YES N/N YES N/N YES P/P
NO NO NO NO NO NO NO NO NO
NON INT NON INT NON INT NON INT NON INT NON INT NON INT NON INT NON INT 
						

							SDM-N80 (E) 9
MODE AT PRODUCTION
RESOLUTIONCLOCK– HORIZONTAL –
H-FREQ
H. TOTAL
H. BLK
H. FP
H. SYNC
H. BPH. ACTIV– VERTICAL  –
V. FREQ (Hz)
V.  T O TA L
V. BLK
V.  F P
V. SYNC
V.  B PV. ACTIV– SYNC –
INT (G)
EXT (H/V) /POLARITY
EXT (CS) /POLARITY
NIT/NON INT
MODE 18 MODE 19 MODE 20 MODE 21 MODE 22 MODE 23 MODE 24 MODE 25 MODE 26
1024 X 768 1152 X 864 1152 X 864 1152 X 870 1120 X 750 1152 X 900 1152 X 900 1170 X 584 1024 X 80094.500 MHz 108.000 MHz 121.500 MHz 100.000 MHz 78.430 MHz 92.940 MHz 105.590 MHz 46.200 MHz 92.940 MHz
68.677 kHz 67.500 kHz 77.487 kHz 68.681 kHz 50.019 kHz 61.795 kHz 71.732 kHz 31.216 kHz 70.838 kHz
usec usec usec usec usec usec usec usec usec
14.561 14.815 12.905 14.56 19.992 16.182 13.941 32.035 14.117
3.725 4.148 3.424 3.04 5.712 3.787 3.031 6.71 3.099
0.508 0.593 0.527 0.32 2.193 0.323 0.152 0.801 0.258
1.016 1.185 1.053 1.28 1.428 1.377 0.909 2.792 1.033
2.201 2.37 1.844 1.44 2.091 2.087 1.97 3.117 1.80810.836 10.667 9.481 11.52 14.28 12.395 10.91 25.325 11.018
84.997 Hz 75.000 Hz 86.057 Hz 75.062 Hz 60.047 Hz 65.950 Hz 76.068 Hz 50.026 Hz 84.031 Hz
lines lines lines lines lines lines lines lines lines
808 900 911 915 833 937 943 624 843
40 36 47 45 83 37 43 40 43
1113272232
3333104838
36 32 43 39 46 31 33 34 33768 864 864 870 750 900 900 584 800
NO NO NO NO NO NO NO NO NO
YES P/P YES P/P NO P/P YES N/N YES N/N YES N/N YES N/N YES N/N YES N/N
NO NO NO NO NO NO NO NO NO
NON INT NON INT NON INT NON INT NON INT NON INT NON INT NON INT NON INT 
						

							SDM-N80 (E) 10
MODE AT PRODUCTION
RESOLUTIONCLOCK– HORIZONTAL –
H-FREQ
H. TOTAL
H. BLK
H. FP
H. SYNC
H. BPH. ACTIV– VERTICAL  –
V. FREQ (Hz)
V.  T O TA L
V. BLK
V.  F P
V. SYNC
V.  B PV. ACTIV– SYNC –
INT (G)
EXT (H/V) /POLARITY
EXT (CS) /POLARITY
NIT/NON INT
MODE 27 MODE 28 MODE 29 MODE 30 MODE 31 MODE 32 MODE 33 MODE 34 MODE 35
1280 X 960 1280 X 960 1280 X 1024 1280 X 1024 1280 X 1024 1280 X 1024 1024 X 768108.000 MHz 148.500 MHz 108.000 MHz 135.000 MHz 157.500 MHz 148.000 MHz 80.000 MHz
60.000 kHz 85.938 kHz 63.981 kHz 79.976 kHz 91.146 kHz 81.319 kHz 60.241 kHz - -
usec usec usec usec usec usec usec usec usec
16.667 11.636 15.63 12.504 10.971 12.297 16.6 - -
4.815 3.017 3.778 3.022 2.844 3.649 3.8 - -
0.889 0.431 0.444 0.119 0.406 0.27 0.4 - -
1.037 1.077 1.037 1.067 1.016 1.378 1.2 - -
2.889 1.508 2.296 1.837 1.422 2 2.2 - -
11.852 8.62 11.852 9.481 8.127 8.649 12.8 - -
60.000 Hz 85.002 Hz 60.020 Hz 75.025 Hz 85.024 Hz 77.006 Hz 74.927 Hz - -
lines lines lines lines lines lines lines lines lines
1000 1011 1066 1066 1072 1056 804 - -
40 51 42 42 48 32 36 - -
1111133 - -
3333333 - -
36 47 38 38 44 26 30 - -960 960 1024 1024 1024 1024 768 - -
NO NO NO NO NO YES NO - -
YES P/P YES P/P YES P/P YES P/P YES P/P NO YES N/N - -
NO NO NO NO NO NO NO - -
NON INT NON INT NON INT NON INT NON INT NON INT NON INT - -