Read Sony SDM-P234 Service Manual online
SDM-P234
US Model
Canadian Model
AEP Model
TFT LCD COLOR COMPUTER DISPLAY
SERVICE MANUAL
– 2 –
SDM-P234 (E)
1. LCD CHARACTERISTICS
Type
: TFT Color LCD Module
Size
: 23 inch
Pixel Pitch
: 0.258 (per one triad) x 0.258
Color Depth
: 16.7M colors / 8Bit
Electrical Interface
: TMDS
Surface Treatment
: Anti-glare, Hard-coating(3H)
treatment of the front polarizer
Operating Mode
: Normally Black
Backlight Unit
: 12CCFL
2. OPTICAL CHARACTERISTICS
2-1. Viewing Angle by Contrast Ratio
≥ 10
Left : -85
° min., -88°(Typ) Right : +85° min., +88°(Typ)
Top :+85
° min., +88°(Typ) Bottom : -85° min., -88°(Typ)
2-2. Luminance
: 70%(min)
2-3. Contrast Ratio
: 400(min)
3. SIGNAL (Refer to the Timing Chart)
3-1. Sync Signal
• Type
: Separate Sync,
SOG (Sync On Green)
Composite Sync
Composite Sync
3-2. Video Input Signal
1) Type
: R, G, B Analog
2) Voltage Level
: 0~0.71 V
a) Color 0, 0
: 0 Vp-p
b) Color 7, 0
: 0.467 Vp-p
c) Color 15, 0
: 0.714 Vp-p
3) Input Impedance
: 75
3-3. Audio Input Signal
1) Type : Stereo
2) Voltage Level
2) Voltage Level
: 0.5rms
3) Input Impedance
: 47 k
3-4. Operating Frequency
Analog
Horizontal
: 28 ~ 92kHz
Vertical
: 48 ~ 85Hz Dot clock:< 170MHz
Digital
Horizontal
: 28 ~ 75kHz
Vertical
: 60Hz Dot clock:< 170MHz
4. Max. Resolution
Analog/Digital
: 1920 x 1200 / 60Hz
5. POWER SUPPLY
5-1. Power : AC 100-240V~, 50/60Hz , 1.0A
5-2. Power Consumption
6. ENVIRONMENT
6-1. Operating Temperature: 5
°C~35°C (41°F~95°F)
6-2. Relative Humidity
: 10%~80%
(Non-condensing)
6-3. MTBF
: 50,000 Hours(Min)
7. DIMENSIONS (with TILT/SWIVEL)
Width
: 534 mm (21.02'')
Depth
: 250 mm (9.84'')
Height
: 429 mm (16.89'')
8. WEIGHT (with TILT/SWIVEL)
Net. Weight
: 9.7kg (21.38 lbs)
Gross Weight
: 14.0 kg (30.86 lbs)
CONTENTS
SPECIFICATIONS
SPECIFICATIONS ................................................... 2
PRECAUTIONS ....................................................... 3
TIMING CHART ....................................................... 4
OPERATING INSTRUCTIONS ...............................10
WIRING DIAGRAM ............................................... 12
DISASSEMBLY ..................................................... 13
BLOCK DIAGRAM ................................................. 14
PRECAUTIONS ....................................................... 3
TIMING CHART ....................................................... 4
OPERATING INSTRUCTIONS ...............................10
WIRING DIAGRAM ............................................... 12
DISASSEMBLY ..................................................... 13
BLOCK DIAGRAM ................................................. 14
DESCRIPTION OF BLOCK DIAGRAM...................15
ADJUSTMENT ...................................................... 17
EXPLODED VIEW ...................................................21
REPLACEMENT PARTS LIST ...............................22
MODE
POWER ON (NORMAL)
STAND BY
SUSPEND
DPMS OFF
POWER S/W OFF
AC SWITCH
H/V SYNC
ON/ON
OFF/ON
ON/OFF
OFF/OFF
-
-
POWER CONSUMPTION
less than 80 W
less than 1W
less than 1W
less than 0W
LED COLOR
GREEN
AMBER
RED
VIDEO
ACTIVE
OFF
OFF
OFF
-
-
(100/50Hz, 240V/60Hz)
– 3 –
SDM-P234 (E)
PRECAUTION
WARNING FOR THE SAFETY-RELATED COMPONENT.
• There are some special components used in LCD
monitor that are important for safety.
These parts are
marked on the schematic diagram and the
replacement parts list. It is essential that these critical
parts should be replaced with the manufacturer’s
specified parts to prevent electric shock, fire or other
hazard.
replacement parts list. It is essential that these critical
parts should be replaced with the manufacturer’s
specified parts to prevent electric shock, fire or other
hazard.
• Do not modify original design without obtaining written
permission from manufacturer or you will void the
original parts and labor guarantee.
original parts and labor guarantee.
TAKE CARE DURING HANDLING THE LCD MODULE
WITH BACKLIGHT UNIT.
WITH BACKLIGHT UNIT.
• Must mount the module using mounting holes arranged
in four corners.
• Do not press on the panel, edge of the frame strongly
or electric shock as this will result in damage to the
screen.
screen.
• Do not scratch or press on the panel with any sharp
objects, such as pencil or pen as this may result in
damage to the panel.
damage to the panel.
• Protect the module from the ESD as it may damage the
electronic circuit (C-MOS).
• Make certain that treatment person’s body are
grounded through wrist band.
• Do not leave the module in high temperature and in
areas of high humidity for a long time.
• The module not be exposed to the direct sunlight.
• Avoid contact with water as it may a short circuit within
the module.
• If the surface of panel become dirty, please wipe it off
with a softmaterial. (Cleaning with a dirty or rough cloth
may damage the panel.)
may damage the panel.)
WARNING
BE CAREFUL ELECTRIC SHOCK !
• If you want to replace with the new backlight (CCFL) or
inverter circuit, must disconnect the AC adapter
because high voltage appears at inverter circuit about
650Vrms.
because high voltage appears at inverter circuit about
650Vrms.
• Handle with care wires or connectors of the inverter
circuit. If the wires are pressed cause short and may
burn or take fire.
burn or take fire.
CAUTION
Please use only a plastic screwdriver to protect yourself
from shock hazard during service operation.
from shock hazard during service operation.
– 4 –
SDM-P234 (E)
TIMING CHART
VIDEO
SYNC
B
D
C
F
E
A
31.500
MHZ
31.500
MHZ
25.175
MHZ
31.500
MHZ
31.500
MHZ
36.000
MHZ
31.505
MHZ
28.350
MHZ
35.500
MHZ
36.000
MHZ
37.861
kHz
37.861
kHz
31.469
kHz
37.861
kHz
37.500
kHz
43.269
kHz
35.162
kHz
31.500
kHz
37.927
kHz
35.156
kHz
usec
dots
usec
dots
usec
dots
usec
dots
usec
dots
usec
dots
usec
dots
usec
dots
usec
dots
usec
dots
26.413
832
26.413
832
31.778
800
26.413
832
26.667
840
23.111
832
28.440
896
31.746
900
26.366
936
28.444
1024
6.095
192
6.095
192
6.356
160
6.095
192
6.349
200
5.333
192
5.586
176
6.349
180
6.085
216
6.222
224
1.016
32
1.016
32
0.636
16
0.762
24
0.508
16
1.556
56
1.079
34
0.635
18
1.014
36
0.667
24
2.032
64
2.032
64
3.813
96
1.270
40
2.032
64
1.556
56
1.270
40
3.810
108
2.028
72
2.000
72
3.048
96
3.048
96
1.907
48
4.063
128
3.810
120
2.222
80
3.238
102
1.905
54
3.042
108
3.556
128
20.317
640
20.317
640
25.422
640
20.317
640
20.317
640
17.778
640
22.854
720
25.397
720
20.282
720
22.222
800
85.080
Hz
85.080
Hz
59.940
Hz
72.809
Hz
75.000
Hz
85.008
Hz
59.901
Hz
70.156
Hz
85.039
Hz
56.250
Hz
msec
lines
msec
lines
msec
lines
msec
lines
msec
lines
msec
lines
msec
lines
msec
lines
msec
lines
msec
lines
11.754
445
11.754
445
16.683
525
13.735
520
13.333
500
11.764
509
16.694
587
14.254
449
11.759
446
17.778
625
2.509
95
1.189
45
1.430
45
1.057
40
0.533
20
0.670
29
3.043
107
1.556
49
1.213
46
0.711
25
0.845
32
0.026
1
0.318
10
0.238
9
0.027
1
0.023
1
0.341
12
0.381
12
0.026
1
0.028
1
0.079
3
0.079
3
0.064
2
0.079
3
0.080
3
0.069
3
0.057
2
0.095
3
0.079
3
0.057
2
1.585
60
1.083
41
1.049
33
0.740
28
0.427
16
0.578
25
2.645
93
1.079
34
1.107
42
0.626
22
9.244
350
10.565
400
15.253
480
12.678
480
12.800
480
11.093
480
13.651
480
12.698
400
10.546
400
17.067
600
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
P/N
NO
N/P
YES
N/N
NO
N/N
YES
N/N
YES
N/N
YES
N/N
YES
N/P
YES
N/P
YES
P/P
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
TTL
V
TTL
V
TTL
V
TTL
V
TTL
V
TTL
V
TTL
V
TTL
V
TTL
V
TTL
V
0.700
Vp-p
0.700
Vp-p
0.700
Vp-p
0.700
Vp-p
0.700
Vp-p
0.700
Vp-p
0.700
Vp-p
0.700
Vp-p
0.700
Vp-p
0.700
Vp-p
0
V
0
V
0
V
0
V
0
V
0
V
0
V
0
V
0
V
0
V
NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
NON INT
495X306
mm 495X306
mm 495X306
mm 495X306
mm 495X306
mm 495X306
mm
495X306
mm 495X306
mm 495X306
mm 495X306
mm
18 { 10
16 { 10
16 { 12
16 { 10
16 { 12
16 { 12
18 { 12
16 { 12
16 { 12
16 { 12
35 { 35
40 { 40
40 { 40
40 { 48
40 { 40
40 { 40
40 { 40
45 { 33
45 { 33
50 { 50
H/V 8 border
H/V 8 border
*1~39 : PC Mode /*41~52 : Video Mode
MODE1
MODE2
MODE3
MODE4
MODE5
MODE6
MODE7
MODE8
MODE9
MODE10
VESA85Hz
VESA85Hz
VGA
VESA 72Hz
VESA 75Hz
VESA 85Hz
VESA 60Hz
VGA-T
VESA 85Hz
VESA 56Hz
640x350
640x400
640x480
640x480
640x480
640x480
720x480
720x400
720x400
800x600
MODEL NAME /SV#(23")
PRESET MODE(23")
MODE FOR CUSTOMER
RESOLUTION
CLOCK
-HORIZONTAL-
H-FREQ
H. TOTAL
H. BLK
H.FP
H.SYNC
H.BP
H.ACTIV
-VERTICAL-
V.FREQ(HZ)
V.TOTAL
V.BLK
V.FP
V.SYNC
V.BP
V.ACTIV
-SYNC-
INT(G)
EXT(H/V)/POLARITY
EXT(CS)/POLARITY
Serration
SYNC LEVEL
-VIDEO-
VIDEO LEVEL
SET UP
-OTHERS-
INT/NON INT
SIZE(23)
#OF GRIDS
DOTS&LINES/GRID
EDID DATA
COMMENTS
-SONY SG SETTING
-OTHERS