Tyco Electronics ELO 1519L-7CAA-0-GY-G User manual

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 1of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
ES600710
ENG SPEC, SERVICE MANUAL, 1519L, 1919L
Rev Eng. Date Description
A V. Pallaver Feb 11, 2010 Initial release per ECO-10-002691

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 2of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
Applicable models:
Part Description Part Number UPC Code
1519L-7CAA-0-GY-G E612058 741149315425
1519L-7CEA-0-GY-G E132100 741149315340
1519L-7CJA-0-GY-G E688298 741149315487
1519L-7CWA-0-GY-G E793496 741149315265
1519L-8CAA-1-GY-G E037021 741149315449
1519L-8CEA-1-GY-G E264492 741149315364
1519L-8CJA-1-GY-G E353788 741149315500
1519L-8CWA-1-GY-G E830343 741149315289
1519L-AUAA-1-GY-G E819123 741149315463
1519L-AUEA-1-GY-G E525398 741149315388
1519L-AUJA-1-GY-G E740169 741149315524
1519L-AUWA-1-GY-G E883482 741149315302
1919L-7CAA-0-GY-G E770385 741149316538
1919L-7CEA-0-GY-G E634589 741149316453
1919L-7CJA-0-GY-G E723103 741149316613
1919L-7CWA-0-GY-G E642332 741149316378
1919L-8CAA-1-GY-G E628623 741149316552
1919L-8CEA-1-GY-G E015447 741149316477
1919L-8CJA-1-GY-G E528441 741149316637
1919L-8CWA-1-GY-G E783686 741149316392
1919L-AUAA-1-GY-G E555042 741149316576
1919L-AUEA-1-GY-G E253324 741149316491
1919L-AUJA-1-GY-G E947660 741149316651
1919L-AUWA-1-GY-G E459829 741149316415

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 3of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
1519L REPLACEMENT PARTS LIST
Item ELO P/N ELO Description Comments
AT Bezel/Touchscreen
Assembly E872425 SCN-A5-FLT15.6-F01-0H1-R
AT Touch Controller E658721 CTR-221600-AT-RSU-00-R
IT Touch Screen E026181 SCN-IT-FLT15.6-001-003-R
IT Touch Controller D68054-000 CTR-270100-IT-RSU-001
APR Bezel/Touchscreen
Assembly E000212 SCN-AP-FLT15.6-S01-004-GY-R
APR Touch Controller E882505 CTR-700000-AP-USB-00R
E796135 LCD, PANEL, AUO, M156XW01-V0, 15.6IN, 16:9 note: LVDS cable
depends on panel
LCD panel
E796691 LCD, PANEL, CMO, M156B1-L01, 15.6IN, 16:9 note: LVDS cable
depends on panel
Power Supply/Inverter Board E385256 PCA, POWER SUPPLY-INVERTER, 1519L 1919L
LCD CTR Board E751788 PCA, LCD CTR, 18EK SCALER, VGA ONLY
LCD CTR Board Firmware E409704 SOFTWARE, OBJ, 1519/1919
EDID File E207667 SOFTWARE, EDID, 1519
OSD Keypad E260995 PCA, OSD KEYPAD, 1519L, 1919L
Audio Amplifier Board E521474 PCA, AUDIO AMPLIFIER BOARD
E348315 ELO-PWR-BRICKCAB-NA12V,4.16A,50W-R
E162361 ELO-PWR-BRICKCAB-EU12V,4.16A,50W-R
E334749 ELO-PWR-BRICKCAB-UK12V,4.16A,50W-R
E834397 ELO-PWR-BRICKCAB-CH12V,4.16A,50W-R
E953228 ELO-PWR-BRICKCAB-TW12V,4.16A,50W-R
E986605 ELO-PWR-BRICKCAB-KR12V,4.16A,50W-R
E033396 ELO-PWR-BRICKCAB-JP12V,4.16A,50W-R
POWER BRICK/CABLE KITS
E707702 ELO-PWR-BRICKCAB-AR12V,4.16A,50W-R
External Cable KIT E378229 ELO-CRT-LCD-GRAY-CAB-KIT-R
Gray Stand E069296 ELO-STAND-1519L-GY-R
Shipping Foams
E056831 FOAM, SHIP, 1519L 1p/n for a set of left and
right foams
Shipping Carton E066140 BOX, SHIP, 1519L

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 4of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
1919L REPLACEMENT PARTS LIST
Item ELO P/N ELO Description Comments
AT Bezel/Touchscreen Assembly E630054 SCN-A5-FLT18.5-F01-0H1-R
AT Touch Controller E658721 CTR-221600-AT-RSU-00-R
IT Touch Screen E366192 SCN-IT-FLT18.5-001-001-R
IT Touch Controller D68054-000 CTR-270100-IT-RSU-001
APR Bezel/Touchscreen
Assembly E000291 SCN-AP-FLT18.5-S01-004-GY-R
APR Touch Controller E882505 CTR-700000-AP-USB-00R
E020773 LCD, PANEL, AUO, M185XW01-V5, 18.5IN, 16:9 note: LVDS cable
depends on panel
LCD panel
E088410 LCD, PANEL, CMO, M185B1-L02, 18.5IN, 16:9 note: LVDS cable
depends on panel
Power Supply/Inverter Board E385256 PCA, POWER SUPPLY-INVERTER, 1519L 1919L
LCD CTR Board E751788 PCA, LCD CTR, 18EK SCALER, VGA ONLY
LCD CTR Board Firmware E409704 SOFTWARE, OBJ, 1519/1919
EDID File E445295 SOFTWARE, EDID, 1919
OSD Keypad E260995 PCA, OSD KEYPAD, 1519L, 1919L
Audio Amplifier Board E521474 PCA, AUDIO AMPLIFIER BOARD
E348315 ELO-PWR-BRICKCAB-NA12V,4.16A,50W-R
E162361 ELO-PWR-BRICKCAB-EU12V,4.16A,50W-R
E334749 ELO-PWR-BRICKCAB-UK12V,4.16A,50W-R
E834397 ELO-PWR-BRICKCAB-CH12V,4.16A,50W-R
E953228 ELO-PWR-BRICKCAB-TW12V,4.16A,50W-R
E986605 ELO-PWR-BRICKCAB-KR12V,4.16A,50W-R
E033396 ELO-PWR-BRICKCAB-JP12V,4.16A,50W-R
POWER BRICK/CABLE KITS
E707702 ELO-PWR-BRICKCAB-AR12V,4.16A,50W-R
External Cable KIT E378229 ELO-CRT-LCD-GRAY-CAB-KIT-R
Gray Stand E952913 ELO-STAND-1919L-GY-R
Shipping Foams E410977 FOAM, SHIP, 1919L 1p/n for a set of left and
right foams
Shipping Carton E953529 BOX, SHIP, 1919L

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 5of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
ADJUSTMENT AND CHECK PROCEDURE
Check the monitor according to the Inspection Standards and, if necessary, follow the
procedures below to adjust the monitor.
1.Power Supply
1.1 Input Voltage: AC110V~AC230V.
1.2 Input Frequency: 60 +/- 3Hz /50 +/-3Hz.
2. Note
2.1 Before adjustments, warm up the monitor for 30 minutes.
2.2 Mode setting refer to timing table 1.
3. Control Confirmation
3.1 The 1366×768 47.7K mode signal will be used to check all display modes of the monitor.
3.2 To adjust the monitor, set the brightness control to its “100” position and the contrast
control to its “50” position.
4. Standard Conditions
Ambient Light: 10 lux
Viewing Distance: 35 cm in front of LCD panel
Warm Up Time: More than 30 minutes with full white picture
Video Signal : 1366 x 768 @ 60Hz
Ambient Temperature: 20~25
AC Voltage: 12 V
5. Adjustment Equipment (for reference only)
5.1 Digital Voltmeter (Model: Fluke 45A or equivalent)
5.2 Colour Analyzer (Model: Minolta CA-210 or equivalent)
5.3 Ruler (45 cm)
5.4 PC: Pentium4 or equivalent
5.5 Chroma (Model: 1000, 2000 or 2130, 2135)
5.6 Power meter (model: 2533 or equivalent)
6. Adjustment Software
6.1 Elo quick installation guide.
6.2 Touch Tools CD.
6.3 Windows 98, ME, 2000, XP, Vista, Windows 7.
7. Adjustment and Check
7.1 AC Voltage Input Check
7.1.1 Apply Chroma Timing #103 with a GENERAL-1 pattern.

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 6of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
7.1.2 Adjustment the Brightness and contrast to max position.
7.1.3 Confirm the power board CN01 pin1 of DC Voltage is under 12V +/- 5%.
7.1.4 Confirm the power board CN01 pin 2/3/4 of DC Voltage is under 5V +/- 5%.
7.2 Display tilt adjustment & Inspection
7.2.1 Apply Chroma Timing #133 with a full white pattern.
7.2.2 Confirm the display tilt0.5mm.
7.3 Auto Color Alignment & Inspection (Warm-up the monitor for 30 minutes)
7.3.1 Apply Chroma Timing #103 with a pattern 143 12x8 checkerboard.
7.3.2 Adjustment the Brightness and contrast to Max position.
7.3.3 Select the “Auto Adjust” form the OSD Menu, press the “SLECT “key to adjusting the
screen to full size.
7.3.4 Press “SELECT” key simultaneously then push the power key on.
7.3.5 Press “Menu” key, select the “F” (at OSD menu left corner) then press “Enter” key will
into factory mode.
7.3.6 Select “Auto Color”, Press the “SELECT” key for Auto color alignment, when “Pass”
message appear, select “Exit” to quit the factory mode.
Factory Mode OSD

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 7of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
Auto Color OSD
EXIT OSD
7.3.7 Apply Chroma Timing #133 with a full white pattern.
7.3.8 Adjust the brightness to max position and contrast to 50 position.
7.3.9 Press the “Menu” key then select “Color”, press for eto select 9300,
6500,5500,7500 and USER to confirm the as below item of temperature.

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 8of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
Note: Only when selecting USER can you mark adjustments to the R/G/B content
values.
7.4 Brightness check
7.4.1 Apply Chroma Timing #133 with a full white pattern.
7.4.2 Confirm the Brightness more than panel : 250 cd/m2typical, AccuTouch :200 cd/m2
typical, IntelliTouch :225 cd/m2 typical , APR Touch : 225 cd/m2 typical.
7.4.3 Brightness variation: 1.33 Maximum
The characteristics are applicable with the backlight after warm-up period. Their
values are max/min and are made at nine points called out in as below Figure.
The values shall be average of the following 9 point (H=1366,V=768)
Uniformity= Maximum Luminance in 9 points / Minimum Luminance in 9 points x 100
%
7.5 Image Adjustment and Check
7.5.1 Apply the signal for all preset timing with a full white pattern.
7.5.2 Selects the preset mode one by one.
Press the “Auto Adjust” key from the OSD menu for Automatically settings the image
parameters.
90% 50% 10%
●●●
●●●
●●●
10%
50%
90%

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 9of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
7.5.3 Confirm the Display image position. H-Position 1 dot, V-Position 1 Line.
7.6 Sync on Green Check
Replace the chroma of H&V Sync, select parameters for Sync on green mode, check the
image is normal.
7.7 Composite Check
Replace the chroma of H&V Sync, then inset the Hsync to chroma XS connect, set the XS
select parameters for H+V mode, check the image is normal.
7.8 Power Saving check
7.8.1 Normal 41.5W(Max)
7.8.2 Sleep Mode 4W
7.8.3 Off mode H-Sync and V-Sync off 2W.
Power saving operation is done at least less than specified value in the list.
7.9 Touch Function Check
7.9.1 Installing the Touch driver: Following the Touch tools CD, and refer to the User
Guide.
7.9.2 Confirm the Touch function: Apply your finger or gloved hand to Touch the active area
of Touch screen.
7.10 DDC Check
Inspect if the E.D.I.D contents meet the model requirement using appropriate application
program.
7.11 Audio Check
7.11.1 Apply the signal VESA 1366X768 (Fh 47.7KHz, Fv 60Hz) with a windows on your
screen.
7.11.2 Apply a standard sound for PC of music software.
7.11.3 Selects the Audio function of the OSD menu for confirm the volume.
8. Power Switch and Function Key Check
8.1 Press the “Menu” key for activate the OSD menu.
8.2 Press the “f” key for adjustment brightness and contrast increases or decreases.
8.3 Press the “e” key for adjustment audio of mute and volume.
8.4 Press the “Menu” and “f” key at the same time continues to hold the buttons for two
seconds to change the “OSD Lock” & “OSD Unlock” function.
8.5 Press the “Menu” and “e” key at the same time continues to hold the buttons for change
the “Power Lock” & “Power Unlock” function.
9. Special Function Key Check
9.1 Auto white balance adjustment mode: Press the “SELECT” key at the same time press
“Power” on, then press the “SELECT” key.

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 10 of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
9.2 Burn-in mode: Pull out the signal cable, select the “F” adjustment the “Burn-in” to ON from
the Factory mode.
Press “Recall” in factory mode OSD menu, then Burn-In mode setting will back to OFF.
9.3 Recall manufacture defaults: Select to “Recall Defaults” from the OSD menu, the OSD
adjustment function will recall to manufacture setting (except OSD Language).
10. Recall Defaults Check:
Press the OSD “Recall” to check the factory defaults value.
Contrast : 50 OSD Time : 15
Color Temp.: USER OSD Position (H.V) : 50
Brightness: 100 OSD Language : English
Volume : 16 Aspect Ratio : Fill screen
Sharpness : 3 Mute :
OSD key : OSD
unlocked
Power key : Power
unlocked

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 11 of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
TROUBLESHOOTING
If you are experiencing trouble with your touchmonitor, refer to the following table. If the problem
persists, please contact your local dealer or the Elo service center.
Solutions to Common Problems
Problem Suggestion(s)
The monitor does not
respond when turning
on the system.
1. Check that the monitor’s Power Switch is on.
2. Turn off the power and check the monitor’s DC
power cord and signal cable for proper
connection.
Characters on the
screen are dim
Refer to the About Touchmonitor Adjustments
section to adjust the brightness.
The video is blank 1. During operation, the monitor screen may
automatically turn off as a result of the Power
Saving feature. Press any key to see if the
screen reappears.
2. Refer to the About Touchmonitor Adjustments
section to adjust the brightness.
Screen flashes when
initialized
Turn the monitor off then turn it on again.
“Out of Range” display Reconfigure the resolution of your computer to
make one of the monitor’s supported video mode
See Page 30 for more information on resolution.
Touch doesn’t work Make sure the touch cable is securely attached at
both ends.

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 12 of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
TROUBLE SHOOTING CHART
Table of Contents
1...No display of screen (Screen is black, color of LED is pulsing green).....10
2...Nothing displays on screen (Screen is black, color of LED is green) ......11
3...Checking the Panel power circuit ............................................................13
4...Checking the back light unit of inverter power.........................................14
5...Abnormal screen .....................................................................................15
6...No OSD display.......................................................................................16
7...Checking the interface circuit of sync signal............................................17
7.1Checking the control circuit of horizontal sync pulse ............................17
7.2Checking the control circuit of vertical sync pulse ................................17
8...Checking the Scalar IC movement ..........................................................18
9...No Power on............................................................................................19
10.Checking the DC/DC converter circuit.....................................................20
11.Checking inverter board circuit ................................................................21
12.Checking the Audio circuit.......................................................................22

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 13 of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
1. No display of screen (Screen is black, color of LED is pulsing green)
Does OSD display when
You push power key off
and then on?
Yes
When the signal
isn’t being inputted,
it indicates with “No
Signal Detected “.
No Proceed “No OSD
display” section.
Check if the sync signal
from Computer is output
and if the video cable is
connected normally.
OK
NG Input the sync signal
of computer, or
change the cable
Proceed “Checkin
g
the Scala
r
IC movement” section.

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 14 of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
2. Nothing displays on screen (Screen is black, color of LED is green)
Is backlight lit?
Yes
OK
NG Refer “Checking the backlight
unit” section
Does computer
output RGB video
signals?
Check the video cable for
failure. Check the host for
output signal with all black
only.
(1) Change pattern of video
signal output on the host.
(2) Reconnect the video
cable.
(3) Change the video cable.
Yes
OK
NG
Check OSD menu
displaying on screen
when you push the
“MENU” key.
Next Page
OK
NG
Proceed “Abnormal screen” section

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 15 of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
Check the 3.3V power are supplied on U702 pin 2 and the 1.8V power are supplied on cathode
of D701.
NG Check if the voltage on U702
pin3 is 5V DC level.
OK
NG
OK
Failure point
U702 Failure
Failure point
(1) F701 Failure
(2) Proceed “Checking the power
board” section.
Check 5V on pin 9/10 of CN101
OK
Check the LVDS data signal output on
pin 15/16/17/18/19/20/25/26 and pin
31/32/35/36/37/38/39/40 of CN101
Continue
NG Refer “Checking the panel power circuit”
Is LVDS clock being outputted under the
condition that a LCD module is connected
to pin 23/24/37/38 of CN101?
NG
NG
OK
Failure point
(1) The cable broke between CN101
and LCD module.
(2) LCD module failure.
Failure point
(1) U703 failure
(2) Printed wire broke between
CN101 and U703
OK
Failure point
(1)U703 failure
(2)Printed wire broke between pin
107/108/ 120/121 of U703 and pin
23/24/37/38 ofCN101.

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 16 of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
3. Checking the panel power circuit
Check +5V voltage on pin 7/8 of CN101
OK NG
Check if pin4 of Q704 is low level.
NG OK
Failure point
U703 failure or R717 open.
Check +5V voltage on pin 3/4 of CN101
OK
NG Failure point
Proceed “Checking the power
board” section
Failure point
LVDS cable is failure
Failure point
Q704 failure or FB701 open.
Check if the base of Q706 is high level
OK
NG
Failure point
Printed wire broke between pin 7/8 of CN101 and pin 1/2/3 of Q704.

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 17 of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
4. Checking the back light unit of inverter power
Is +12V supplied to F101 on
inverter power board
NG Failure point
(1) FB001 or F001 open
(2) CN05 failure
OK
Check the “Inverter on/off” signal input to inverter at TTL high level
NG
OK
Is a “H” level being output in the TTL level from pin 20 of U703?
Check the “Brightness” signal input to inverter is 0~3.3V.
NG
OK
Failure point
Printed wire broke between pin 21 of U703 and pin 2 of
CN701 on Interface board.
Failure point
Inverter module is failure.
NG
Failure point
Printed wire broke between pin20 OF U703 and pin 3 of CN701 on LCD CTR
board.
OK
Failure point
I309 Failure

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 18 of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
5. Abnormal screen
Check the R.G.B video signal
from computer input on D-
Sub R.G.B connector.
OK NG
Failure point
(1) No R.G and B video signal output
from host computer. Check
Check the R.G.B input signals
on pin 59/56/54 of U703,
respectively that their level is
07Vp
pmaximum
Failure point
In case of the Red signal (A Green and Blue
signal is the same path, too.)
(1) Printed wire broke between pin1 of CN405
and pin59 of U703.
(2) FB406/R434/C432 open
OK NG
Is the pulse of the LVDS level
being output to CN101 from
the data line of
U703?
Failure point
(1) Printed wire broke between U703 data line
and CN101.
(
2
)
U703 failure.
OK NG
Check the LVDS clock output
to pin 23/24/37/38 of CN101
from pin 107/108/ 120/121 of
ll
Failure point
(1) Printed wire broke between pin 23/24/37/38
of CN101 from pin 107/108/ 120/121 of
U703.
OK NG
Proceed “Checking the Scalar
IC movement” section.
(Analog Signal Input)

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 19 of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
6. NO OSD display
Check Pin 22 of U703 showed the right voltage when menu key is pressed
NG Failure Point
(1) Function key is destroyed
(2) R466,R468,RN2 Open
(3)
D401 C429 Short
OK
Proceed “Checking the Scalar IC movement” section.

ENG SPEC, SERVICE MANUAL, 1519L, 1919L PROPRIETARY DOCUMENT
DOC #:
ES600710
Print Date: 15-Feb-10
REV:
A Page 20 of 26 UNCONTROLLED COPY OF
RELEASED DOCUMENT FROM
DOCUMENTATION SERVICES
7. Checking the interface circuit of sync signal
7.1 Checking the control circuit of horizontal sync pulse
7.2 Checking the control circuit of vertical sync pulse
Check the horizontal sync signal on pin 63 of U703 TTL level
NG Failure Point
(1) Video cable may be failed
(2) Printed wire broke between pin13 of CN405 and pin63
of U703
(3) FB409, R446 open
(
4
)
R448
,
C442 short
OK
Proceed “Checking the Scalar IC movement” section.
Check the vertical sync signal on pin 64 of U703 TTL level.
NG
Failure Point
(1) Video cable may be failed.
(2) Printed wire broke between pin 14 of CN405 and pin 64
of U7030.
(3) R447 open
(
4
)
C449
,
C443 shor
t
OK
Proceed “Checking the Scalar IC movement” section.