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SERVICE MANUAL
CHASSIS NO. : CL-32
FACTORY MODEL: LS51K
MODEL: SDM-S51R
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COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : CL-32
FACTORY MODEL: LS51K
MODEL: SDM-S51R
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
MENU
OK
CONTENTS
SPECIFICATIONS ................................................... 2 ADJUSTMENT ...................................................... 10
PRECAUTIONS ....................................................... 3 TROUBLESHOOTING GUIDE .............................. 11
TIMING CHART ....................................................... 4 PRINTED CIRCUIT BOARD................................... 15
OPERATING INSTRUCTIONS ................................ 5 EXPLODED VIEW...................................................16
WIRING DIAGRAM ................................................. 6 REPLACEMENT PARTS LIST ...............................18
DISASSEMBLY ....................................................... 7 PIN CONFIGURATION............................................21
BLOCK DIAGRAM ................................................... 8 SCHEMATIC DIAGRAM ........................................ 25
SPECIFICATIONS
1. LCD CHARACTERISTICS 4. POWER SUPPLY
Type : TFT XGA LCD Module
Pixel Pitch : 0.297mm x 0.297mm 4-1. Power
Color Depth : 6bits(with FRC)/ 16M colors 100~240V, 50/60Hz 0.6A
Active Video Area : 15.0inch (304.128 x 228.096)
Surface Treatment : Anti-Glare, Hard Coating (3H) 4-2. Power Consumption
Backlight Unit : Top/Bottom edge side 2CCFL MODE H/V SYNC VIDEO POWER CONSUMPTION LED COLOR
Electrical Interface : LVDS interface POWER ON (MAX) ON/ON ACTIVE less than 25 W GREEN
STAND-BY OFF/ON OFF less than 3 W AMBER
2. OPTICAL CHARACTERISTICS
2-1. Viewing Angle by Contrast Ratio 10 SUSPEND ON/OFF OFF less than 3 W AMBER
Left : 55° min. 60°(typ) DPMS OFF - - less than 2 W AMBER
Right : 55° min. 60°(typ)
Top : 40° min. 45°(typ)
Bottom : 40° min. 45°(typ) 5. ENVIRONMENT
2-2. Luminance: 180(min.), (9300K) 5-1. Operating Temperature: 10°C~35°C (50°F~95°F)
(Ambient)
2-3. Contrast Ratio : 250(min.), 350(typ.) 5-2. Relative Humidity : 10%~80%
(Non-condensing)
3. SIGNAL (Refer to the Timing Chart) 5-3. MTBF : 50,000 Hours (Min.)
3-1. Sync Signal Lamp Life : 40,000 Hours (Min.)
1) Type : Separate Sync. (Horizontal & Vertical)
2) Input Voltage Level : Low=0~0.8V, High=2.1~5.5V 6. DIMENSIONS (with TILT/SWIVEL)
3) Sync Polarity : Positive or Negative
Width : 387mm (15.24'')
3-2. Video Input Signal Depth : 175mm (6.89'')
1) Type : R, G, B Analog Height : 330mm (12.99'')
2) Voltage Level : 0~0.714 V
a) Color 0, 0 : 0 Vp-p 7. WEIGHT (with TILT/SWIVEL)
b) Color 7, 0 : 0.467 Vp-p
c) Color 15, 0 : 0.714 Vp-p Net. Weight : 3.6kg (7.94 lbs)
3) Input Impedance : 75 Gross Weight : 5.2kg (11.46 lbs)
3-3. Operating Frequency
Horizontal : 28 ~ 61kHz
Vertical : 48 ~ 75Hz
-2-
PRECAUTION
WARNING FOR THE SAFETY-RELATED COMPONENT. WARNING
· There are some special components used in LCD BE CAREFUL ELECTRIC SHOCK !
monitor that are important for safety. These parts are
· If you want to replace with the new backlight (CCFL) or
marked on the schematic diagram and the
inverter circuit, must disconnect the AC adapter
replacement parts list. It is essential that these critical
because high voltage appears at inverter circuit about
parts should be replaced with the manufacturer's
650Vrms.
specified parts to prevent electric shock, fire or other
hazard.
· Handle with care wires or connectors of the inverter
· Do not modify original design without obtaining written circuit. If the wires are pressed cause short and may
permission from manufacturer or you will void the burn or take fire.
original parts and labor guarantee.
TAKE CARE DURING HANDLING THE LCD MODULE
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.
· 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.
· 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.)
CAUTION
Please use only a plastic screwdriver to protect yourself
from shock hazard during service operation.
-3-
TIMING CHART
VIDEO
B A
E
C
F
D
SYNC
Sync Dot Total Video Blanking Sync Back Front
MODE H/V Frequency Period Active Time Duration Porch Porch Resolution
Polarity Clock (E) Time ( A ) (B) (D) (F) (C)
H (Pixels) 28.350 31.50 KHz 900 720 180 108 54 18
1 720 x 400
V (Lines) 70.156 Hz 449 400 49 3 34 12
H (Pixels) 25.175 31.469 KHz 800 640 160 96 48 16
2 640 x 480
V (Lines) 59.940 Hz 525 480 45 2 33 10
H (Pixels) 30.240 35.00 KHz 864 640 224 64 96 64
3 640 x 480
V (Lines) 66.667 Hz 525 480 45 3 39 3
H (Pixels) 31.5 37.50 KHz 840 640 200 64 120 16
4 640 x 480
V (Lines) + 75.0 Hz 500 480 20 3 16 1
H (Pixels) 31.505 35.162 KHz 896 720 176 40 102 34
5 720 x 480
V (Lines) 59.901 Hz 587 480 107 2 93 12
H (Pixels) 36.0 35.156 KHz 1024 800 224 72 128 24
6 800 x 600
V (Lines) 56.25 Hz 625 600 25 2 22 1
H (Pixels) + 40.0 37.879 KHz 1056 800 256 128 88 40
7 800 x 600
V (Lines) + 60.317 Hz 628 600 28 4 23 1
H (Pixels) 50.0 48.077 KHz 1040 800 240 120 64 56
8 800 x 600
V (Lines) 72.188 Hz 666 600 66 6 23 37
H (Pixels) + 49.5 46.875 KHz 1056 800 256 80 160 16
9 800 x 600
V (Lines) + 75.0 Hz 625 600 25 3 21 1
H (Pixels) 57.285 49.727 KHz 1152 832 320 64 224 32 832 x 624
10
V (Lines) 74.553 Hz 667 624 43 3 37 3 (MAC 17")
H (Pixels) 65 48.363 KHz 1344 1024 320 136 160 24
11
V (Lines) 60.004 Hz 806 768 38 6 29 3 1024 x 768
H (Pixels) 71.640 53.946 KHz 1328 1024 304 176 112 16
12
V (Lines) 66.110Hz 816 768 48 4 36 8 1024 x 768
H (Pixels) 75 56.476 KHz 1328 1024 304 136 144 24
13
V (Lines) 70.069 Hz 806 768 38 6 29 3 1024 x 768
H (Pixels) + 78.75 60.023 KHz 1312 1024 288 96 176 16
14 1024 x 768
V (Lines) + 75.029 Hz 800 768 32 3 28 1
H (Pixels) 80.00 60.241KHz 1328 1024 304 96 176 32 1024 x 768
15
V (Lines) 74.928Hz 804 768 36 3 30 3 (MAC 19")
-4-
OPERATING INSTRUCTIONS
FRONT VIEW REAR VIEW
MENU
OK
D-Sub Signal
Connector
See front control panel
Power Connector
Front Control Panel
1. Power switch and indicator
This switch turns the dislay on and off.
This power indicator lights up in green when the
display is turned on, and lights up in orange when
the monitor is in power saving mode.
1
2. MENU Button
MENU 2 This button display or close the main menu.
MENU
3 3. (Contrast) Button
This button displays the Contrast menu.
4
OK
4. (Brightness) Button
This button displays the Brightness menu.
5
5. Buttons
These buttons function as the buttons when
OK 6 selecting the menu items and making adjustments.
6. OK Button
This button select the item or executes the settings
in the menu.
-5-
WIRING DIAGRAM
Connector Ass'y
P/N: 6631T11016C
Connector Ass'y
P/N: 6631T20022E
J706 J702
J705
CN2 CN101
CN3
-6-
DISASSEMBLY
BACK CABINET REMOVAL
(b)
(a)
(b)
TOP
(b)
(a)
ME
NU
(b) OP
EN
(b) (a)
OK
(b)
(a) BOTTOM
(b) Latch Point
1) Remove four screws (a) from Back cabinet 2) Set the Monitor as picture.
3) Put in the fingers between panel and
Front bezel.
4) Pull the Front bezel and Back cabinet.
OK
5) Pull the Side Front bezel.
6) Remove the Back cabinet.
-7-
EEPROM
E-DDC SCLK
24LC02 MICOM EEPROM
SDATA
(MTV312) 24LC08
D- Schmitt Trigger
H.V Hsyncm 5VR
Sub (74HCT14A)
Vsyncm
15P Hsync2 Vsync2 Control
Invert er on/off DIMADJ Panel
Interface
ADC/PLL/Scaler 20 Pin
RGB 24 Bit LVDS
(GMZAN2) Connector
Invert r on/off
-8-
CON 3.3VD
3.3 VD 3.3 V_PL 3.3 V_AD 2.5 V_A 2.5 V_D
DIMADJ
8P Regulator 3.3V_AD
5VR
BA033
BLOCK DIAGRAM
CON 2P 3.3V_PL
BD Regulator
12VS
BA033 +3.3V
SMPS
5VR Regulator +2.5V_A
Filter RC117
Inverter on/o ff
2.5V_D
Inverte r on/off
Invert er block
DIMADJ
CON 8P
PWM Regulator
DIMADJ
Controller BA033 Module Power 3.3V
CON 2P
LIPS
DESCRIPTION OF BLOCK DIAGRAM
1. Scaler One chip IC(GMZAN2, U201)
GMZAN2 (U201) is one chip IC which it supports four internal function blocks of Video Amp, PLL, A/D converter
and Video processor.
Video signal (0.7Vp.p) clamped through C207, 208, 209 with matching IC's proper cut off voltage.
This signal is processed as a proper 8 bit digital signal by U201's amplifying, phase locking, A/D converting, and
scaling operations.
U201 outputs 24bit RGB data and control signals(Clock, Horizontal and Vertical sync, and Data Enable) as LVDS
IC's input signals.
2. System Controller (Microprocessor) Circuit
1) Microprocessor (U501) distinguishes polarity and frequency by calculating horizontal and vertical sync input
from signal source.
2) Microprocessor (U501) carries out power control by sending power-down trigger signal to each IC.
3) Microprocessor (U501) communicates with EEPROM (U502), and GMZAN2 (U201)
through IIC(2 lines) or 4 bit bus line. It makes all devices operated properly.
4) Microprocessor (U501) let User adjust screen by OSD function.
3. LVDS(Low Voltage Differential Signal, U411)
LVDS transmitter (U411) delivers digital signal to the receiver inside LCD module by method of abstraction.
The abstracted signals are pairs of RIN0+-, RIN1+-, RIN2+-, RIN3+-, and RCLKIN+- of which voltage swing
is 0.5V each.
When SHUTON pin's input is High, transmitter goes to power down mode.
4. DC/DC block
This block is composed of regulators which supplies 2.5V and 3.3V.
Each regulator's source power is 5VR from LIPS(LCD Inverter and Power Supply) block.
U806 supplies 2.5VD and 2.5VA and U802 supplies 3.3VD, 3.3V_AD, and 3.3V_PL powers to GMZAN2's
internal PLL, ADC, Pre-amp, and scaler by dropping down 5VR.
U805 supplies MODPWR-3.3V for LCD module's operation by dropping down 5VR.
5. LIPS Block (LCD Inverter and Power Supply)
This block supplies DC voltages of 5VS to interface board and 12V to inverter by converting AC input voltage
of 100~240Vac.
Converting method is SMPS(Switching Mode Power Supply).
Inverter on/off signal from microprocessor makes inverter turned on or off .
DIMADJ signal from microprocessor does inverter's current adjustment for Brightness control.
-9-
ADJUSTMENT
1. Procedures of how to go to service mode. 4. Warm up time
1) Enter the service mode of this unit by turning on the Warm up for 30 minutes before performing any
power while pressing and holding the " " key adjustment.
simultaneously.
2) Press "MENU" key----MAINTAIN. 5. Adjustment for White Balance
3) Press " " key to enter the service menu. a. Display Full white pattern at SXGA/60Hz.
4) Select the desired function. b. Set up [SERVICE MODE].
5) Press the "MENU" key to exit OSD. c. Click "INITIAL EEPROM".
6) Turn off the power and then turn on it again. The c. Enter the service mode in case of show "color
monitor then enters the normal mode. calibration complete" message.
To enter the service again, repeat the procedure
described above. 6. 9300K color adjustment
a. Select "9300K" in "COLOR TEMP" and enter.
Note b. Use a 35% IRE white video field in the primary
W/B readjustment is required after the panel, board mode.
and microcomputer are replaced. However, be sure to c. Adjust "R/G/B Drive " to secure the color
perform aging for more than 30 minutes for RGB reset temperature from 6500K R/G/B initial drive data.
before W/B adjustment. c-1. Down "B-Drive" for color Y.
c-2. Down/Up "R-Drive" for color X.
2. Setup d. Press "OK" key to exit adjust mode.
1) Prepare timing and pattern data for a signal
generator according to the Sony timing specifications. 7. 6500K color adjustment
2) Connect a monitor video cable to the signal generator. a. Select "6500K" in "COLOR TEMP" and enter.
3) Put Color Analyzer(ex. CA-110) 50cm away from the b. Repeat the adjustment procedure as steps b to d at
monitor, specify it vertically in the center of the 9300K.
display, and adjust the focus to the optimum level
using an eyepiece. 8. MENU RESET ALL RESET
4) Put the monitor and Color Analyzer(ex. CA-110) in a
light-shielded room.
5) Set up [SERVICE MODE] of the monitor.
3. Operation
Data is manually set to improve the productivity. The
brightness, contrast, and backlight are set to 50, 70
and 100 respectively. After that, the default data of the
color temperature to be adjusted is set.
- 10 -
TROUBLESHOOTING GUIDE
1. NO POWER
NO POWER
(POWER INDICATOR OFF)
CHECK POWER
CHECK J705 BOARD, AND FIND
NO
VOLTAGE OUT A SHORT POINT
PIN5, PIN6 (5V)? AS OPENING
EACH POWER LINE
YES
CHECK
U802 PIN 1 NO
CHECK U801.
VOLTAGE
(5V) ?
YES
CHECK
NO CHECK 5VS LINE
U805 PIN 1 Voltage
(OPEN CHECK)
(5V) ?
NO PROBLEM
YES
CHECK KEY CONTROL
CONNECTOR ROUTINE
IS U201
PIN12 (3.3V) NO
VOLTAGE REPEATED
AS PULSE
SHAPE ?
NO
CHECK IIC LINE
CHECK U201 VCC,
CONNECTION
XTAL, RESET
(U501, U502)
- 11 -
2. NO RASTER (OSD IS NOT DISPLAYED) LIPS
NO RASTER
(OSD IS NOT DISPLAYED)
J705
NO
PIN5, PIN 6 CHECK LIPS
5V?
YES
J705 PIN2 NO CHECK MICOM INV
5V? ON/OFF PORT.
YES
1. CONFIRM BRIGHTNESS
J705 PIN1 NO OSD CONTRL STATE.
5V? 2. CHECK MICOM DIM-ADJ
PORT
YES
CHECK
PULSE AS
CONTACTING SCOPE
PROBE TO CAUTION LABEL. NO
(CONTACT PROBE TO LIPS
CAUTION LABEL.
CAN YOU SEE PULSE
AT YOUR
SCOPE?
YES
REPLACE CCFL LAMP
IN THE LCD MODULE
- 12 -
3. NO RASTER (OSD IS NOT DISPLAYED) gmZAN2
NO RASTER
(OSD IS NOT DISPLAYED)
U201 NO
POWER PINS CHECK U802, U801
3.3V?
YES
1. CHECK PIN141, 142
U201 PIN141, 142 NO SOLDERING CONDITION
OSCILLATE AS 20MHZ? 2. CHECK X201
3. TROUBLE IN U201
YES
U401
PIN31 IS 65MHz CLOCK?
PIN27 IS 48KHz H-SYNC? NO
CHECK CONNECTION LINE
PIN28 IS 60Hz V-SYNC?
FROM U201 TO U401
PIN30 IS 48KHz DEN?
IS PULSE APPEARED
AT SIGNAL PINS?
YES
NO
U401 PIN1
CHECK U801
3.3V?
YES
TROUBLE IN CABLE
OR LCD MODULE
- 13 -
4. NO RASTER (OSD IS DISPLAYED) gmZAN2
NO RASTER
(OSD IS DISPLAYED)
YES
U201
NO
POWER PIN CHECK U802, U801
3.3V?
YES
CHECK 1. CHECK PC
R,G,B INPUT? NO 2. CHECK SIGNAL CABLE
U201 PIN 87, 91, 95 & D-SUB CONNECTOR
LINE
YES
CHECK
NO CHECK H-SYNC LINE
H-SYNC INPUT
(D-SUBU701MICOM
U201 PIN 150?
U201 PIN150)
- 14 -
PRINTED CIRCUIT BOARD
1. MAIN BOARD (Component Side)
U501
U502
R534
R533
C514
R537
C516
R521
C502
C503
C501 C513 R536 C512
R501
R502
R503
R504
R505
R506
R507
R508
R509
R517
R535 Q503 R516
R532 RA501
C238
C239
C244
C245
C246
R519
R525
Q501 Q502 C515 RA502
R520
R403
R207
C226
C261
C262
C505
C225 X501
R526
R523
R404
C405 R522
R510 R571 R570
C230
R540 R561 R560
C402
BA205 BA206 R511 R581 R580
C250
R401
PANNEL
LPL
C506
R524
R531
R527
R528 C507
R530
C242
C233
C231
C218
C217
C243
C249
C248
C403
R529 C508
C235
L202 L201 R513 R512
L204
L203
C212
C224
C204 C205 R515 R518
C404
U401
C232 C206
C247
C236 L804
40 30 20 10 5
C223
R206
U201
C832
C221 BA204
C401
C228
160
C219 C241
C227
C229 C240
150
50
1 J702
C222
BA203
X201
C220
C406
C407
C271
BA202
C215
C234
C211
C210
C237
BA201
C408
C828
C802 L205
C409
C829
C801
C712
R710
R711
R714
R712
R713
R715
C270
80
C216
C410
90 110
C827 100 120
C257
C269
C821
C259
C258
C214
R201
R202
C831
C824
R703
L805
D702
C203 C209
L206
C254 R208
U802
C202 C208
R701