Be sure to read this manual before servicing. To assure safety from fire, electric shock, injury, harmful
radiation and materials, various measures are provided in this Acer DLP projector. Be sure to read
cautionary items described in the manual to maintain safety before servicing.
Service Warning
1. When replace the lamp, to avoid burns to yor fingers. The lamp becomes too hot.
2. Nevr touch the lamp bulbwith a finger or anything else. Never drop it or give it a shock. They may cause
bursting of the bulb.
3. This projector is provided with a high voltage circuit for the lamp. Do not touch the electric parts of
powrer unit (main), when turn on the pojector.
4. Do not touch the exhaust fan, during operation.
2. Spare Parts List .......................................................................................................................................4
Switchable Normal/ Video mode for data/ video display
Powerful AV function to provide high quality AV picture
HDTV compatibility (YPBPR)
Note: The brightness of the projected image will vary depending on the
ambient lighting conditions and contrast/brightness settings.
5. Remote Control Description
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The remote control sensors are located in the front/ back of the projector. The distance
between the sensor and the remote control should not exceed 6 meters.
Installing or Replacing Batteries
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Caution
Avoid excessive heat and humidity. There may be danger of an explosion if batteries
are incorrectly replaced. Replace only with the same or equivalent type recommended
by the manufacturer. Dispose of used batteries according to the manufacturer!s
instructions.
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6. INSTALLATION
Screen Size
Place the projector at the required distance from the screen according to the desired picture size
The projector is capable of displaying various High Definition TV display modes. Some of
these sources are:
Digital-VHS (D-VHS) player DVD player
Satellite Dish HDTV receiver DTV tuners
Most of these sources will provide an analog component video output, a standard VGA
output, or a YPBPR (default) format.
The projector is capable of accepting HDTV data through a YPBPR connector. Use a
HDTV cable that came with your projector to display HDTV images.
The following standards are supported in the HDTV function:
480i 480p
720p 1080i
Please refer to "Menu System" on page 13 for information on the HDTV OSD selections.
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Connecting to Various Equipment
It only takes a few seconds to connect your projector to your desktop or notebook computer, VCR,
or other systems. However, a Mac adapter (an optional accessory) is needed for connection to
Macintosh computers.
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7. OPERATION
Start Up
1. Plug the power cord into a wall socket.
2. Turn on the main power switch.
3. Press POWER to start the unit. The back-lit POWER key flashes green and stays green
when the power is turned on
(When the power is turned off, there is a 60-second cooling period before the projector can be
re-started.)
4. Switch on all connected equipment.
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Digital Keystone Correction
Keystoning refers to the situation where the projected image is noticeably wider at either the
top or bottom. To correct this, press KEYSTONE +/- (hot key) on the control panel of the
projector or on the remote control, and then adjust the sliding bar labeled Keystone, as
needed. Press + to correct keystoning at the top of the image. Press - to correct keystoning
at the bottom of the image.
Auto Adjustment
In some cases, you may need to optimize the picture quality. To do this, press the AUTO key
on the control panel of the projector or on the remote control. Within 3 seconds, the built-in
Intelligent Auto Adjustment function will re-adjust settings to provide the best picture quality.
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Source Selection
When several input sources are available, press the SOURCE key to make a selection from the
control panel of the projector or the remote control.
Menu System
Press Menu for the main menu, and then press or to select a sub-menu. Press Menu
again to select items in the sub-menu.
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1. Display Menu
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2. Image Menu
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3. Source Menu
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4. Control Menu
FUNCTION DESCRIPTION
Language sets the language for the OSD control menus.
Language
Use the 3 / 4 key to select the desired language from among English, French, German,
Italian, Spanish, Korean, Simplified Chinese and Traditional Chinese.
OSD Pos.
Selects a desired OSD position.
OSD
OSD Time
Sets the length of time the OSD will remain active after the last time you pressed the
button. The range is from 5 to 60 seconds in 5-second increments.
Source scan
When selected, activates the Source scan function.
Keystone hold
When selected, preserves the last keystone correction value even when the projector is
restarted.
Setup
Default
Video Mode
Lamp hour
Mirror hold
When selected, preserves the last mirror correction value even when the projector is
restarted.
Blank time
Determines the length of time before the projector is shut off when Blank is activated.
Auto off
Sets the length of time before the system is shut off when no input is detected.
User logo
Enables the user to define the logo screen that will display during start-up. Three modes
are available: Default (BOXLIGHT logo), black screen and blue screen.
Returns all settings to their factory preset values.
Selects video mode.
Shows lamp usage time.
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5. PIP Menu
These functions are available only when the input mode is PC and the PIP source is Video or
S-Video
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8. Shutdown
1. Press POWER and a warning message will appear. To turn off the projector, press
POWER again.
2. The fan will continue to run for approximately two minutes.
3. Turn off the main power switch.
4. Disconnect the power cord from the wall socket.
Caution
Please do not unplug the power cord before POWER is shut down or during the two-minute cooling
process. If the projector is not properly shut down, to protect the lamp, the system will detect this and
cool the lamp for two minutes automatically before turning on again.
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9. MAINTENANCE
Lamp Information
Use and Replacement of the Lamp
When the lamp Indicator lights up red or a message appears suggesting the time of
lamp replacement, please install a new lamp or consult your dealer. An old lamp
could cause a malfunction in the projector and in rare instances may even explode.
Lamp LED Indicators
Lamp Life Indicators When the LED lights up red, it is warning you
The Lamp is not properly
attached
The temperature is too high When the projector!s internal temperature is too
that lamp usage has exceeded 1500 hours.
Replace the projection lamp with a new one
immediately.
LED lights up red.
high for the projector to operate safely, the LED
blinks orange and the lamp turns off
automatically. The LED keeps blinking while
the unit is off. If the LED light is off, the
operation and temperature of the projector!s
lamp are normal.
Caution
The LAMP indicator will light up if the lamp becomes too hot. Turn off the power and let the
projector cool for 45 minutes. If the LAMP indicator is still red when turning the power on, please
contact your dealer.
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10. Lamp Replacement
Caution
To reduce the risk of electrical shock, always turn off the projector and disconnect the power cord before
changing the lamp
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LG RD-JT40/41 Service Manual
Caution
To reduce the risk of severe burns, allow the projector to cool for at least 45 minutes before replacing
the lamp.
The reduce the risk of injuries to fingers and damage to internal components, use caution when
removing lamp glass that has shattered into sharp pieces.
To reduce the risk of injuries to fingers and/or compromising image quality by touching the lens, do not
touch the empty lamp compartment when the lamp is removed.
This lamp contains mercury. Consult your local hazardous waste regulations to dispose of this lamp in
a proper manner.
Resetting Lamp Hours
If you replace the lamp after 1500hours of operation, please follow the instructions
below within 10 minutes of powering on.
Temp Information
When the LED lights up, it is warning you of the following possible problems:
1. The internal temperature is too high.
2. The fans are not working.
Turn off the projector and contact qualified service personnel for further help.
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11. TROUBLE SHOOTING
Common Problems & Solutions
PROBLEMS TRY THESE SOLUTIONS
NO POWER
NO PICTURE
TRAPEZOID IMAGE ON
THE SCREEN
POOR COLOR
BLURRED IMAGE Press Auto on the control panel of the projector or the
REMOTE CONTROL
DOES NOT WORK
Make sure the power cord is inserted snuged into the AC
adapter socket.
Make sure the power cord is inserted snuged into the power
outlet.
Toggle the power switch to the position "I#
Wait two minutes after the projector is turned off before
turning the projector back on.
Check for the proper input source.
Ensure all cables are connected properly.
Adjust the brightness and contrast.
Remove the lens cap.
Reposition the unit to improve its angle on the screen.
Use the Keystone correction key on the control panel of
the projector or the remote control unit.
Select the correct video system.
Adjust brightness, contrast, or saturation.
remote control unit to get better picture quality.
Adjust the focus.
Reposition the unit to improve its projection angle.
Ensure the distance between the unit and screen is within
the adjustment range of the lens.
Replace the batteries with new ones.
Make sure there is no obstacle between the remote
control and the projector.
Stand within 4 meters (13 feet) of the projector.
Make sure nothing is blocking the front and rear receivers.
Status Messages
On-Screen Messages Description
SEARCHING Projector is searching for input.
ACQUIRING SIGNAL
OUT OF RANGE Input signal frequency exceeds the projector!s range.
LAMP WARNING
CHANGE LAMP AND
RESET LAMP TIMER!
OUT OF LAMP USAGE
TIME. CHANGE THE
LAMP!
OUT OF LAMP USAGE
TIME. YOU HAVE TO
CHANGE THE LAMP!
Projector has identified the input signal and is running the auto
image adjustment function.
The lamp has been in operation for 1400 hours. Install a new
lamp for optimal performance.
The lamp has been in operation for 1480 hours, and the power
will turn off after 20 hours.
The lamp has been in operation for over 1500 hours. The
warning message will display for 30 seconds every 5 minutes
after you turn on the projector and the power will turn off
automatically after 10 minutes.
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1. Final Assembly Trouble Shooting Guide
System Trouble Shooting Flow Char
STEP:
Back-LIGHT OK?
No
1.Check power core
2.Check power board and wire
Yes
Power ON OK?
(LAMP ON?)
Yes
No Signal?
No
Auto Power Off?
No
Video NG?Yes
No
Yes
Yes
1.Check lamp door.
2.Check thermal switch and wire
3.Check 12V Fan and wire
4.Check power board and wire
5.Check color wheel FPC
6.Check screws on color wheel
7.Check color wheel motor
8.Check DMD driver board and 120 pins connector
9.Check Translation board and wire and 50 pins connector
10.Check Main board
11.Check AV Box connector (if with this option)
1.Check input cable
2.Check OSD source set up
1.Check OSD lamp hours
2.Check OSD Auto Off setup value
3.Check lamp door
4.Check 12V fan
5.Check thermal status
6.Check AV Box connector(if with this option)
1.Check AV Box
2.Check Video cable
No
Audio NG?
No
IR Remote Control
NG?
No
Pixel Fail?
No
Image NG?
(Raindrops)
No
A
Yes
Yes
Yes
Yes
1.Check AV Box
2.Check audio cable
1.Check Remote module battery
2.Check Remote module
3.Check Translation board
4.Check Main board
1.Check DMD chip
2.Check DMD board
1.Check color wheel and Sensor board
2.Check DMD chip and holder
3.Check DMD conductive elastomers assembling
4.Clean DMD conductive elastomers
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2. Engine Assembly Trouble Shooting Guide
A
1.Check DMD board
Image NG?
(Blank)
No
Yes
2.Check color wheel and Sensor board
3.Check DMD conductive elastomers
4.Check Main and Translation boards
Image NG?
(Screen flashing)
No
Image NG?
(Screen dimmish)
No
Image NG?
(Freezing)
No
Yes
Yes
Yes
1.Check color wheel and Sensor board
2.Check DMD board
3.Check Main and Translation boards
1.Check DMD board
2.Check color wheel and Sensor board
1.Check color wheel
2.Check Sensor board color index signal
Image NG?
(Missing column bar)
No
Image NG?
(Screen overlap)
Yes
Yes
1.Check DMD holder
1.Check Main and Translation boards
2.Check DMD board
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Start
Power On
OK
NG
1.chk CW
2.chk DMD/b
3.chk Main/b
4.chk TR/b
Image Quality
OK
EE
Performance
OK
Optical
Performance
NG
NG
Dust
No
Blue Edge
Brightness
System
Trouble
shooting
Guide
No
No
Focus NG
No
Pixel Failure
YesNG
1.clean DMD chip
Yes
Yes
Yes
Yes
No
light leakage
1.Reset Factory mode, chk DC offset/Gain setup
2.chk DMD/b
3.clean projection lens
4.cleanTIR
5.clean optical parts
Yes
2.clean TIR(DMD
side)
1.chk lens housing / DMD
housing Assembly
2.chk light pipe assembly
3.chk TIR assembly
4,change light pipe clip
5.change light pipe
change projection
1.change DMD
2.change DMD/b
3.clean elastomer
1.chk DMD baffle
2.chk TIR
lens
Uniformity
No
Contrast
No
Color
No
Color
Uniformity
Yes
Yes
Yes
Yes
1.chk TIR
2.chk projection lens
1.Reset Factory mode, chk DC offset/Gain setup
2.chk DMD baffle
3.change projection lens
1.Reset Factory mode, chk CW delay
2.change CW
3.change projection lens
1.chk TIR
2.chk DMD
3.chk DMD/b
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3. Main Board Trouble Shooting Guide
System no work
No
Yes
a . IC201 bad soldiering
b. Flash(IC201) without software inside.
c. IC607(Reset IC) function abnormal
d. IC901 no work.
a. Check IC609 (3.3V) or IC610(2.5V)
b. Check MCLK and DCLK
No data signal
output to DMD BD
No
The image display
"No Signal" when
the input is PC
No
The ghost Image
display output of
Video input
No
Couldn't download
new software to
MianBD
No
Remote mouse
don't work
Yes
Yes
Yes
Yes
Yes
a. IC901 bad soldiering causing IC901 no work.
b. Check IC609(3.3V) or IC610(2.5V).
c. Check IC203, IC202 if there was MCLK and DCLK
output to IC901.
a. Check the voltage of IC502, IC503(3.3V),
IC501(3.3V), BC537(3.3V)
b. if voltage above are OK, then check
IC611(VSYNC) and IC606(HSYNC) if there were
these two signal or not.
c. Replace IC502
a.CN605 bad soldiering
b.IC901 bad soldiering
c.Avbox and MainBD bad connection
a. Replace IC602
b. IC901
a.Check the mouse of PC is still working normally
b.Check the mouse driver of PC is PS2 compatible
mouse
c.Replace IC802
No
Keypad working
abnormally
No
LampLit signal
abnormal
No
IR doesn't work.
No
Gray bar abnormal or
image contour(PC input)
Yes
Yes
Yes
Yes
Check IC613
Check IC612
a.Check soldiering condition of R692.
b.IC901 bad soldiering
Check the resisters between IC502 and IC901
(RP501 RP512)
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4. Power Supply Trouble Shooting Guide
YESCHECK SPS B/D.
INPUT
B + B380VDC
WHETHER POOR
SOLDER
LINE
0VACOR
220VAC
NO
B + B-
54VDC
NO
B + B0VDC
NO
CHECK
R663,R662,
R66 ,R659,
R660,ZD65
YES
CHECK PFC B/D.
WHETHER POOR
SOLDER
YES
CHECK L65
L652
WHETHER
POOR SOLDER
F65
OPEN
NO
YES
Q65 DAMAGE
(D.S. SHORT)
NO
Q60 DAMAGE
(D.S. SHORT)
YES
YES
CHECK IC65
R656,D65
BD65 ,R658
R678
CHECK
R6 2,R609
D6 0,IC60
R6,Q602
NO
CHECK
POLARITY :
B+ PGND,
B + B-,
C659
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5. Translation Board Trouble Shooting Guide
DS660 Translation Board Trouble Shooting Guide
VCCCPU OK
POWERONA
function OK?
Yes
VCC,12V
function OK?
Yes
Abnormal
function
OK?
Yes
LAMPEN-S
function OK?
Yes
LAMP_LIT
function OK?
No
No
No IC806
No
No
1.Q803
2.Q703,Q704
1.Q705
2.Q706
3.Q701
4.Q702
1.Q802
2.IC805
1.Q707
2.Q708
Yes
IR0 function
OK?
Yes
LED_1~3,
FAN_HSO
function OK?
Yes
VPOSRAIL,
VNEGRAIL
function OK?
Yes
END
No
NoIC802
No
1.IC802
2.IC803
1. Q15
2. Q9
3. D8
4. D10
5. U2
6. D12
7. D11
8. D9
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6. DMD Board Trouble Shooting Guide
Check power voltages.
Check clocks from oscillator (58 MHz), from ASIC (58 MHz and 116 MHz), from FPGA (9.667
MHz and 2.4 MHz), to Hitachi (14 MHz), to motor controller (9.667 MHz)
Verify HSYNC, VSYNC, ACTDATA, SYNCVALID, POWERGOOD, RESETZ from computer or
source at 60 Hz. Verify these signals meet TI specified timing per Hardware ICD.
Verify color wheel index running at 120 Hz
If no color wheel spinning, check data transfer on the following lines: MTRDATA, MTRCLK,
MTRSELZ.
Verify phase lock of color wheel by checking rising edge of Index 275 us after Vsync
If previous steps are verified, microcontroller is OK.
Verify motor_spin line from microcontroller to FPGA is logic high.
Verify hardware LAMPEN to ballast. Lamp type must be set to appropriate type if problems with
getting LAMPLIT appear.
3.5 seconds after LAMPLIT, DMD should become active (unpark) and display an image.
Verify reset (HRESETZ, pin 1) from FPGA to microcontroller only goes low once during the lamp
strike period. LAMPLIT should be stable after microcontroller last reset.
If everything else verified, but still no image, perform the following checks:
Check DMD voltages at output of generation circuits, but also out of SR16 IC (be careful not to
probe on pins or the device could be damaged): VBIAS (22-25v), VRESET (-26V), VCC2 (7.5V).
Please attached file for reset waveform.
Check voltage enables from FPGA are active as appropriate. If not, output drivers may be
blown from previous probing.
Be sure two reset lines are not tied together or the device WILL be damaged.
Verify I2C communication by reading system status and microcontroller version. Verify READY
bit in Status Byte.
Set curtain mode to Full Green and verify green is displayed over entire screen. Repeat for Red
and Blue. This checks for functionality of TI electronics between ASIC and DMD.
If colors are wrong, check color wheel is spinning the correct direction. Put unit in red curtain
mode and use a photosensor to verify that red is displayed 220 uS after color wheel Index.
Use spoke light test register number 0x0E to verify sequence color transitions occur during wheel
spoke interval. See Software ICD for register 0x0E.
Other suggestions:
Be sure front end electronics are sending one pixel per clock.
Elastomer and DMD are aligned properly to pads.
Check data transfer on the following lines: PBCLKZ, PBDAT0, PBDAT1.
If Color wheel has difficulty in starting or is unstable, the timing capacitors may need to be
adjusted to match the motor parameter.
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12. Timing Chart
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DMD Image Specification
1. SCOPE
This document specifies the image quality requirements applicable to the DLPTM XGA Component Set.
The Component Set provides the DLPTM XGA Projector with digital imaging functionality based on Digital
Micromirror Device (DMD) technology.
2. Definitions
2.1 Blemish
A blemish is an obstruction, reflection, or refraction of light that is visible, but out of focus in the
projected image under specified conditions of inspection (see Table 1). It is caused by a
particle, scratch, or other artifact located in the image illumination path.
2.2 Dark pixel
A single pixel or mirror that is stuck in the OFF position and is visibly darker than the
surrounding pixels.
2.3 Bright pixel
A single pixel or mirror that is stuck in the ON position and is visibly brighter than the
surrounding pixels.
2.4 Unstable pixel
A single pixel or mirror that does not operate in sequence with parameters loaded into memory.
The unstable pixel appears to be flickering asynchronously with the image.
2.5 Adjacent pixel
Two or more stuck pixels sharing a common border or common point, also referred to as a
cluster.
2.6 Streaks
Artifact resulting from locallized variation in mirror tilt angle relative to surrounding mirrors.
They are similar in appearance to window scratches but appear at the mirror level. Streaks
appear as faint diagonal or arcing patterns in the image.
2.7 Sea of Mirrors (SOM)
SOM is a rectangular array of off-state mirrors surrounding the active area.
2.8 Eyecatcher
A small localized light "spot# which has high spatial frequency and high differential brightness.
These are due to various DMD window or window aperture "defects# including: digs, voids,
particles and scratches.
2.9 Border Artifacts
All variations of these artifacts are acceptable under this image quality specification.
Border artifacts are a general category of image artifacts that may show up on screen in the
area outside of the active array. Border artifacts include: Exposed Bond Wires, Exposed Metal
2, and Reflective Edge.
2.9.1 Bond Wires
Bond Wires attach the die to the superstructure. If visible, they will appear as short light
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parallel lines outside of the Sea of Mirrors (SOM).
2.9.2 Exposed Metal 2
Exposed Metal 2 is due to a shift in positioning of either the die or the window aperture
which may allow light to be reflected off of the layer of metal 2 that is below the super
structure (mirrors). This defect is located at the outer edge of the SOM.
2.9.3 Reflective Edge
Reflective Edge is light that may reflect from the edge of the DMD!s window aperture
onto the projection screen. It will appear as a thin diffuse line outside of the SOM.
2.10 Two Zone Blue 60 Screen
The Two Zone Blue 60 screen is used to test for major dark blemishes. Refer to Figure 1 for
configuration. All areas of the screen are colored a Microsoft Paintbrush blue 60 (green and red
set at 0, blue set at 60).
NOTE: If linear degamma is not used then the Microsoft Paintbrush values must be adjusted to
match the degamma table being used in order to generate an equivalent blue level on the test
screen image.
2.11 Two Zone Gray 10 Screen
The Two Zone Gray 10 screen is used to test for major light blemishes. Refer to Figure 1 for
configuration. All areas of the screen are colored a Microsoft Paintbrush gray 10 (green, red,
and blue set at 10).
NOTE: If linear degamma is not used then the Microsoft Paintbrush values must be adjusted
to match the degamma table being used in order to generate an equivalent gray level on the
test screen image.
3. ACCEPTANCE REQUIREMENTS
3.1 Conditions of Acceptance
All DMD image quality defects must be determined under the following projected image test
conditions:
a. Projector degamma shall be linear.
b. Projector error diffusion shall be "off#
c. Projector brightness and contrast settings shall be set to nominal.
d. The diagonal size of the projected image shall be a minimum of 60 inches.
e. The projection screen shall be 1X gain.
f. The projected image shall be inspected from an 8 feet minimum viewing distance.
g. The image shall be in focus during all Table 1 tests.
3.2 Test Sequence
Tests shall be run in the sequence listed in Table 1.
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TABLE 1. Image Quality Specification
SEQ # TEST SCREEN ACCEPTANCE CRITERIA
1 Major Dark
Blemish
Two Zone Blue 60 1. No blemish will be darker than Microsoft
Blue 60 in the Critical Zone
2.
3. No blemish will be > ½# long/diameter
2 Major Light BlemishTwo Zone Gray 10 1. No blemish will be lighter than Microsoft
Gray 10 in the Critical Zone
2.
3. No blemish will be > ½# long/diameter
3 Eyecatcher Gray 10 1. No eyecatcher will be lighter than
Microsoft Gray 10
Streaks Blue 60
1. No streaks
Gray 10
White
Projected Images Any screen 1. No adjacent pixels
2. No bright pixels (Active Area)
3.
4.
5.
6. No DMD window aperture shadowing on
the Active Area
7. No unstable pixels in Active Area
Notes:
1. Projected blemish numbers include the count for the shadow of the artifact in addition to the
artifact itself, so that the count usually represents a single artifact on the window.
2. No blemish shall be more than 5 inches long or have a total area of more than 5 square inches
3. During all Table 1 tests, projected images shall be inspected in accordance with the conditions
of inspection specified in Section 3.
4. The rejection basis for all cosmetic DMD defects (scratches, nicks, particles) will be the
projected image tests referenced in Table 1.
5. Any other image quality issue not specifically defined in this document shall be acceptable.
6. Black screens shall not be used as a basis for rejecting DMDs for image quality.
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14. Electrical Interface Character
Interface Definition
15 pin definition of the mini D-sub male for DDC1/2B protocol
Unless other specified, all alignments should meet the following conditions:
1.All power on and power off condition should be last for more than 5 minute. i.e. no power on is
permitted if UUT(Unit under test) had not been power off and last for more than 5 minute since
last power on.
2.Brightness and contrast should be measured only 5 minute or more after lamp is on.
3.UUT should be placed at a distance ranges from 1.5 to 5 meter.
4.Applied timing should be 1024*768 @65Hz (XGA); 800*600@60Hz (SVGA)
Before test, be sure the following configurations are done properly:
1.Turn off light in test chamber.
2.Test chamber condition as per ANSI IT7.215-1992.
3.Connect DSUB cable to Graphics port of UUT.
4.Connect stereo input to stereo input of UUT.
5.Connect RCA terminal to Video input of UUT.
6.Connect S terminal to S-Video input of UUT.
7.Connect AC power cord to UUT.
(A) Video EE Check
Equipment: VG828, DVD Player
Aspect Ratio: 4:3
Channel
Composite
Video
Prime
Mode
* NTSC
PAL
Timing Pattern Item Criteria
PT2
(H: 15.73KHz,
29.96Hz, I)
(H: 15.63KHz,
25Hz, I)
Master Pattern
PT976
64Gray & Color
PT863
Text
Movie Video Essential
PT2
Master Pattern
Gray 0-100%
H&V Res. 1 Line
Color Hue, Sat need correct
Color Noise Acceptable
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Snack, Ring,
Cross-talk
Gray & Color
Check
EM Character EM distinguish
Gray 0-100%
H&V Res. 1 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Snack, Ring,
Cross-talk
Only Color Noise
Acceptable
64 Step
Color Noise Acceptable
Color Noise Acceptable
Only Color Noise
Acceptable
40
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LG RD-JT40/41 Service Manual
Channel Prime
Timing Pattern Item Criteria
Mode
S-Video
* NTSC
(H: 15.73KHz,
29.96Hz, I)
PAL
(H: 15.63KHz,
25Hz, I)
YcbCr
* NTSC
(H: 15.73KHz,
29.96Hz, I)
PAL
(H: 15.63KHz,
25Hz, I)
YPbPr * 480p
(H: 31.54KHz,
60.08Hz, p)
PT2
Master Pattern
Gray 0-100%
H&V Res. 1 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Not Acceptable
Snack, Ring,
Cross-talk
PT976
64Gray & Color
PT863
Gray & Color
64 Step
Check
EM Character EM distinguish
Text
Movie Video Essential
PT2
Master Pattern
Gray 0-100%
H&V Res. 1 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Not Acceptable
Snack, Ring,
Cross-talk
PT2
Master Pattern
Gray 0-100%
H&V Res. 1 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Not Acceptable
Snack, Ring,
Cross-talk
PT976
64Gray & Color
PT863
Gray & Color
64 Step
Check
EM Character EM distinguish
Text
Movie Video Essential
PT2
Master Pattern
Gray 0-100%
H&V Res. 1 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Not Acceptable
Snack, Ring,
Cross-talk
PT2
Master Pattern
Gray 0-100%
H&V Res. 1 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Not Acceptable
Snack, Ring,
Cross-talk
PT976
64Gray & Color
Gray & Color
Check
64 Step
41
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LG RD-JT40/41 Service Manual
720p
(H: 45.00KHz,
60Hz, p)
1080I
(H: 33.75Khz,
30Hz, I)
(B) PC EE Check:
Equipment: Chroma 2250, CL-100
Aspect Ratio: 4:3
Channel Prime
Timing Pattern Item Criteria
Mode
DSB
* 1024*768@8
5Hz
(68.677KHz,
84.997Hz)
640*400@70
Hz
(31.47KHz,
70.08Hz)
Hz
PT863
EM Character EM Clear
Text
Movie Video Essential
PT2
Master Pattern
Gray 0-100%
H&V Res. 2 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Not Acceptable
Snack, Ring,
Cross-talk
PT2
Master Pattern
Gray 0-100%
H&V Res. 4 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Snack, Ring,
Only interlace jitter
acceptable
Cross-talk
PT5
SMPTE 3
Gray 0-100%
H&V Res. 1 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Gray 0-100%
H&V Res. 1 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Not Acceptable
Snack, Ring,
Cross-talk
PT2
Master Pattern
Gray 0-100% 640*480@60
H&V Res. 1 Line
42
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LG RD-JT40/41 Service Manual
(31.469KHz,
59.94Hz)
640*400@85
Hz
(43.269KHz,
85.008Hz)
800*600@60
Hz
(37.879KHz,
60.317Hz)
800*600@75
Hz
(46.875KHz,
75Hz)
800*600
@85Hz
(53.67KHz,
85.06Hz)
1024*768@6
0Hz
(48.4KHz,
60Hz)
1024*768@7
5Hz
(60.023KHz,
75.029Hz)
PT2
Master Pattern
PT2
Master Pattern
PT2
Master Pattern
PT2
Master Pattern
PT2
Master Pattern
PT2
Master Pattern
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Not Acceptable
Snack, Ring,
Cross-talk
Gray 0-100%
H&V Res. 1 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Not Acceptable
Snack, Ring,
Cross-talk
Gray 0-100%
H&V Res. 1 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Not Acceptable
Snack, Ring,
Cross-talk
Gray 0-100%
H&V Res. 1 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Not Acceptable
Snack, Ring,
Cross-talk
Gray 0-100%
H&V Res. 2 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Not Acceptable
Snack, Ring,
Cross-talk
Gray 0-100%
H&V Res. 2 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,
Not Acceptable
Snack, Ring,
Cross-talk
Gray 0-100%
H&V Res. 2 Line
Color Hue, Sat need correct
Smear Not acceptable
Linearity As optical spec
Jitter, Swing,