Sharp LLT1815H-B Schematic

q

SERVICE MANUAL

CODE : 00ZLLT1815SME

LCD MONITOR

LL-T1815H

MODEL

CONTENTS

CHAPTER 1.

CHAPTER 2.

CHAPTER 3. DISASSEMBLY AND ASSEMBLY. . . . . . . . . . . . . . . . . . . 3 – 1

CHAPTER 4. TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 1

CHAPTER 5. WAVE FORM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 1

CHAPTER 6. BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 1

CHAPTER 7. CIRCUIT DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 1

OUTLINE OF THE PRODUCT, NOMENCLAT URE AND FUNCTION

CONNECTION, ADJUSTMENT, OPERATION, AND FU NCTIONS

LL-T1815B

. . . 1 – 1

. . . . 2 – 1

CHAPTER 8. PARTS LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 – 1

Model Name

LL-T1815H LL-T1815U LL-T1815E
LL-T1815B LL-T1815Y LL-T1815P

Parts mark ed w ith "!" are important for maintaining the safety of the set. Be sure to replace these parts with specified
ones for maintaining the safety and performance of the set.

For North America For others

SHARP CORPORATION

Product Name

This document has been pub lished to be used
for after sales service only.
The contents are subject to change without notice.

■■■■SERVICE PRECAUTION

[OVERCURRENT PROTECTION ELEMENT FOR USB OUTPUT OF THE POWER UNIT]

The USB output (5V, connector CN2) of the power unit is provided with an overcurrent protection element (Part Number PTC101) of PTC (positive
characteristics thermister). Its resistance becomes high when heated by an overcurr ent, and shuts down the circuit similarly with a fuse. When it is
cooled down by non-conduction, its resistance returns to a low level and allows a current to flow through the circuit.

If a user erroneously allows an overcurrent to flow through an USB device, the PTC101 cuts off the current. When repaired, it returns to normal. Note
this operation of the PTC 101 in case of an USB error.

LL-T1820-H/B SERVICE PRECAUTION

PC-UM10M

CHAPTER 1. OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION

1. SPECIFICATIONS

■ PRODUCT SPECIFICATIONS

• LCD display

18.1 inches (46 cm measured diagonally)
Advanced-Super-V and Anti Glare Low Reflection TFT LCD module

• Resolution (max.)
SXGA 1280 u 1024 pixels

• Displayable colors (max.)

16.77 million colors (8 bit)

• Brightness (max.)
250cd/m

• Dot pitch

0.2805(H) 0.2805(V) mm

• Contrast ratio
350 : 1

• Angle of visibility
Left-right 160°

• Screen display size
Horizontal 359 mm u Vertical 287.2 mm

• Video signal
Analog: Analog RGB (0.7Vp-p) [75Ω]

Digital: DVI standard based on 1.0

• Sync signal
Separate Sync (TTL level: +/-), Sync on Green,

Composite Sync (TTL level: +/-)

• Expansion compensation
Digital screening

Enlarging VGA/SVGA/XGA etc. with a compensation process.
(no enlarging, based on a fixed aspect ratio, and enlarging to full
screen size.)

• Plug & Play
VESA: DDC2B compatible

• Power management
VESA: based on DPMS

DVI: based on DMPM

• Input signal terminal
Analog: 15 pin mini D-sub(3 rows)

Digital / Analog: 29 pin DVI-I u 2

• Speaker output
1W + 1W

• Audio input terminal
Mini stereo jack

• Headphone terminal
Mini stereo jack

• Height adjustment
Adjustment range: Approx.80 mm

• Screen rotation
Clockwise 0° - 90°

• Screen tilt
Upward approx. 0° - 30°

2

; Up-down 160°

; downward approx. 0° - 5°

• Screen swivel
Approx. 90° from left through right

• Power supply
AC100-240V, 50/60Hz (Use special AC adapter, type NL-A03E of

Sharp Corporation.)

• Temperature of operating environment
5 - 35°C

• Power consumption
51W(With no audio input)

(55W maximum, 5W when in power-saving mode)

• Dimensions (W u D u H)
With long width screen: 395 mm u 213 mm u 427(- 507) mm

With long height screen: 324 mm u 213 mm u 463(- 543) mm

• Weight (excluding AC adapter)
Approx. 8.7 kg, Display area only, approx. 5.5kg

■ DIMENSIONS (Units: mm)

Special AC adapter

Approx. 2.0 m

Approx. W 120 mm u D 60 mm u H 35 mm

Cable(Accesory)

Analog signal cable: Approx. 2.0 m
Audio cable: Approx. 2.0 m

Cable(Option)

Digital signal cable,
NL-C01E(purchased separately):Approx. 2.0 m
Analogue signal cable,
NL-C02E(purchased separately):Approx. 2.0 m
2-input cable,
NL-C03J(purchased separately):Approx. 025 m

LL-T1815 OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION

1 – 1

PC-UM10M

Relevant signal timings (analog)

Display mode

VESA 640 u 480

640 u 400
720 u 400
800 u 600

1024 u 768

1152 u 864
1280 u 960

1280 u 1024

US text 720 u 400
Power

Macintosh
series

Sun Ultra
series

• Recommended resolution is 1280 u 1024.

• All are compliant only with non-interlaced.

• F requencies for P ower Macint osh and the Sun Ultra series ar e refer­ence values. To connect, another adapter (purchased separately)
may be required.

• If the monitor is receiving timing signals that are not compatible, [OUT
OF TIMING] will appear. Follow your computer's instruction manual
to set the timing so that it is compatible with the monitor.

• If the monitor is not receiving any signal (synch signal), [NO SIGNAL]
will appear.

640 u 480

832 u 624
1024 u 768
1152 u 870

1280 u 1024

1024 u 768

1152 u 900

1280 u 1024

Hsync

(kHz)

31.5kHz 60Hz 25.175MHz

37.9kHz 72Hz 31.5MHz

37.5kHz 75Hz 31.5MHz

37.9kHz 85Hz 36.0MHz

37.9kHz 85Hz 31.5MHz

37.9kHz 85Hz 35.5MHz

35.1kHz 56Hz 36.0MHz

37.9kHz 60Hz 40.0MHz

48.1kHz 72Hz 50.0MHz

46.9kHz 75Hz 49.5MHz

53.7kHz 85Hz 56.25MHz

48.4kHz 60Hz 65.0MHz

56.5kHz 70Hz 75.0MHz

60.0kHz 75Hz 78.75MHz

68.7kHz 85Hz 94.5MHz

67.5kHz 75Hz 108.0MHz

60.0kHz 60Hz 108.0MHz

64.0kHz 60Hz 108.0MHz

80.0kHz 75Hz 135.0MHz

31.5kHz 70Hz 28.3MHz

35.0kHz 66.7Hz 30.2MHz

49.7kHz 74.6Hz 57.3MHz

60.2kHz 75Hz 80.0MHz

68.7kHz 75Hz 100.0MHz

64.0kHz 60Hz 108.0MHz

80.0kHz 75Hz 135.0MHz

48.3kHz 60Hz 64.13MHz

53.6kHz 66Hz 70.4MHz

56.6kHz 70Hz 74.25MHz

61.8kHz 66Hz 94.88MHz

71.8kHz 76.2Hz 108.23MHz

71.7kHz 67.2Hz 117.01MHz

81.1kHz 76Hz 134.99MHz

Vsync

(Hz)

Dot frequency

(MHz)

Relevant signal timings (digital)

Display mode

VESA 640 u 480 31.5kHz 60Hz 25.175MH

800 u 600 37.9kHz 60Hz 40.0MHz

1024 u 768 48.4kHz 60Hz 65.0MHz

1152 u 864 67.5kHz 75Hz 108.0MHz
1280 u 960 60.0kHz 60Hz 108.0MHz

1280 u 1024 64.0kHz 60Hz 108.0MHz

US text 720 u 400 31.5kHz 70Hz 28.3MHz

• Recommended resolution is 1280 u 1024.

• All are compliant only with non-interlaced.

• A computer with an output terminal conforming to DVI (DVI-D24 pin
or DVI-I29 pin) and with SXGA output capability can be connected
here.
(Depending on the type of computer to be connected, the display may
not work correctly.)

• If the monitor is receiving timing signals that are not compatible, [OUT
OF TIMING] will appear. Follow your computer's instruction manual
to set the timing so that it is compatible with the monitor.

• If the monitor is not receiving any signal (synch signal), [NO SIGNAL]
will appear.

Hsync

(kHz)

37.9kHz 72Hz 31.5MHz

37.5kHz 75Hz 31.5MHz

48.1kHz 72Hz 50.0MHz

46.9kHz 75Hz 49.5MHz

56.5kHz 70Hz 75.0MHz

60.0kHz 75Hz 78.75MHz

Vsync

(Hz)

Dot frequency

(MHz)

The analog RGB input connector pin

(Mini D-sub connector with 15 pins)

5432

9876

10

15 14 13 12 11

No. Function No. Function

1

Red video signal input

2

Green video signal input

3

Blue video signal input

4

GND

5

GND

6

For red video signal GND

7

For green video signal
GND

8

For blue video signal
GND

1

9

DDC+5V

10

N.C.

11

GND

12

DDC data

13

For Hsync signal input

14

For Vsync signal input

15

DDC clock

LL-T1820-H/B OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION

1 – 2

PC-UM10M

The DVI-I input connector pin

No. Function No. Function

1 TMDS data 2- 16 Hot plug detection
2 TMDS data 2+ 17 TMDS data 0­3 TMDS data 2/4 shield 18 TMDS data 0+
4 N.C. 19 TMD S data 0/5 shield
5 N.C. 20 N.C.
6 DDC clock 21 N.C.
7 DDC data 22 TMDS clock shield
8 Analogue vertically

23 TMD S clock +

synchronised signal

9 TMD S data 1- 24 TMDS clock ­10 TMDS data 1+ C1 Analogue red image signal
11 TMDS data 1/3 shield C2
12 N.C. C3

Analogue green image s igna l
Analogue blue image signal

13 N.C. C4 Analogue horizontally

synchronised signal
14 +5V C5 Analogue GND
15 GND

Power management

The monitor is based on the VESA DPMS*1 and the DVI DMPM*2 stan­dards.

To activate the monitor's Power Management function, both the video
card and the computer must conform to the VESA DPMS standard and
the DVI DMPM standard.

*1 DPMS: Display Power Management Signalling

DPMS mode Sc reen

ON Display on 51W

Power

consumption

H-sync V-sync

Yes Yes

(with no audio

input)
STANDBY Display off 5W No Yes
SUSPEND Yes No
OFF No No

*2 DMPM: Digital Monitor Power Management

DPMS mode Screen Power consumption
ON Display on 51W (with no audio input)
OFF Display off 5W

DDC (Plug & Play)

This monitor supports the VESA DDC (Display Data Channel) standard.
DDC is a signal standard for carrying out Plug & Play functions on the

monitor or PC. It transfers information such as degree of resolution
between the monitor and PC. You can use this function if your PC is
DDC compliant and if it is set so that it can detect the Plug & Play mon­itor.

There are many varieties of DDC due to the differences between sys­tems. This monitor works with DDC2B.

PRODUCT DESCRIPTION

Front side

7

2 3 4 5 6

1

8

1. INPUT button: To switch between the sign als input term i­nals. (Input terminal 1 0 Input terminal 2)

2. MENU button: This button is used to pop-up, select and
close the OSD (On Screen Display) Menu.

3. c button: This button is used to select menu options
when the OSD Menu is displayed.

4. e d buttons: When the OSD Menu is displayed:
These button s are used to i ncrease or
decrease the value of a selected option.
When the OSD Menu is not displayed:
These buttons are used to adjust backlight
brightness and speaker volume.

5. Power button

6. Power LED: This LED is lit green when in use and
orange when in power-saving mode.

7. Speakers: Audio entering via the monito r and the
external device connected to the mon itor
can be heard.

8. Headphone terminal: Headp ho n es (c om me rc ia ll y a va ila b le) ca n
be connected here.

9. Audio input terminal: A comp uter’s audio output terminal can be
connected here. The audio ca ble included
should be used.

10. DVI-I input terminal:

(INPUT-2)

The computer’s digital RGB output term inal
or analog RGB ou tput term inal c an be c on­nected here.
Separately sold cables are necessa ry for
connection.
For a digital si gnal input: It can be co n­nected to a computer with a DVI-compatible
output terminal (DVI-D24 pin or DVI-I29 pin)
and which has SXGA output ability.
Depending on the co mputer to be con­nected, correct display ma y or may not b e
possible.

11. Analog RGB input

terminal(INPUT-1)

The analog signal c able is connected
here.The analog signal cable included
should be used.

12. Security lock anchor: By connecting a security lock (commercially
available) to the security lock anchor, the
monitor is fixed so that it cannot be trans­ported.
The security slot works in conjunction with
Kensington Micro Saver Security Systems.

13. Power terminal

14. Main power switch

15. Ventilatio n op en i ng s :

Note: Never block the ventilation openings
as this may lead to overheat ing insi de the
monitor and result in malfunction.

Rear side

10 13

9

12

11

15

7

14

15

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PC-UM10M

HEIGHT ADJUSTMENT, ANGLE ADJUSTMENT,
ROTATION (LONG HEIGHT/WIDTH)

Caution: • Pressure from hands on the LCD panel could cause dam-

age.

• Be careful not to allow your fingers to be pinched.

Height adjustment

Adjust to an easy to view height.

Approx. 80mm

Angle adjustment

Adjust to an easy to view angle.

Approx. 30

Approx. 5

Approx. 45

Rotation (long height/width)

The display can be rotated for a long height or width to suit the dis­played content.

• Before rotating, move the display to its uppermost position. If the dis­play is rotated while it is set low, it will contact the stand and could
lead to damage.

• The display can only be rotated through a range of 90°. Applying
excessive force may cause malfunction.

• Do not apply excessive force when the cable is connected.

To set to long height

Gently turn in the clockwise direction (to 90°).

To set to long width

Gently turn in the counterclockwise direction (to 90°).

Approx. 45

Note: The orientation of the display can be changed using Pivot S oft-

ware.

LL-T1820-H/B OUTLINE OF THE PRODUCT, NOMENCLATURE AND FUNCTION

1 – 4

PC-UM10M

CHAPTER 2. CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS

1. CONNECTING THE MONITOR AND TURNING THE MONITOR ON AND OFF

Caution: • When connecting, ensure that both the monitor and com-

puter are switched off.

• Be careful not to overly bend the cable or add extension
cords as this could lead to malfunction.

Cable storage

If necessary, excess cable can be housed in the stand.

1. Remove the cover.
Gently pull the top of the cover towards yourself.

2. Run cable along the back of the stand.
Pass cable in front of the stand, and then bring it through the back.

CONNECTING THE MONITOR TO A COMPUTER

Connecting using accessory analog signal cable

Connect the accessory analog signal cable to the analog RGB input ter­minal of the display, and the analog RGB output terminal of the com­puter.

Analog RGB input
terminal

Analog signal cable

• Paying attention to connector direction, firmly insert the signal
cable to terminal, and then tighten the screws at both sides.

If connecting to a D-sub 15 pin 2 row Apple P ower Macint osh, attach a
Macintosh conversion adapter (commercially available) to the analog
signal cable.

Analog RGB output
terminal

• If the display is to be ro tated, first house the cab les with the dis­play in the long height position, so there is sufficient length when
the display is turned.

3. Refit the cov e r.
Be careful not to pinch the cable.

• If the cover is hard to refit, do not force it. Check whether cables
are trapped.

Caution: If the display is to be rotated, first house the cable, and then

check while gently turning the display. If it cannot be turned,
rehouse the cable with sufficient slack. (If there is insufficient
cable length, rotation will be impossible. Forcing rotation may
cause cable disconnection.)

Macintosh conversion adapter

LL-T1815 CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS

2 – 1

PC-UM10M

When connecting using separately sold digital or analog
signal cables

The separately sold display cable enables connection between the DVI­I input terminal on the display and the digital or analog RGB output ter­minal of the computer.

When connecting to a digital RGB output terminal:

• Use a digital signal cable (model name: NLC01E)

• For digital RGB connection, the monitor has an input for connecting
to a computer with a DVI-compatible output connector (DVI-D 24 pin
or DVI-I 29 pin) and SXGA output capability. (Depending on the type
of computer to be connected, the display may not work correctly.)

When connecting to an analog RGB output terminal:

• Use an analog signal cable (model name: NLC02E).

DVI-I input terminal

Display cable
(purchased separately)

• Paying attention to connector direction, firmly insert the signal
cable to terminal, and then tighten the screws at both sides.

Note: When using digital or analog signal cables, set [INPUT-2] to

[1 LINE].

Set the monitor as follows when establishing a digital connection wit h a
Power Mac using an ADC-DVI ada pter made by Belkin. (Operation has
been checked with the Power Mac G4 M7627J/A)

• Perform settings with the Power Mac power supply off.

1. After connecting the power cord, turn on the monitor’s main power.

2. Press the e button and d button simultaneously, and while doing
this press the POWER button (i.e. turn the power on).

˩˝˟ȁˠ˥ˣ˥˰˝˨

ŊŏőŖŕĮij ŐŇŇ Őŏ

RGB output terminal

When connecting using a separately sold 2-input cable

The separately sold 2-input cable (model name:NLC03J) enables 2 sys­tem connection.

1. Connect a 2-input cable (purchased s eparately) to the DVI-I input
Cterminal on the display.

DVI-I input terminal

mini D-sub 15 pin

2-input cable
(purchased
separately)

DVI-D24 pin

2. Connect the analog and digital signal cables ( purchas ed s eparat ely)
to the 2-input cable, then connect to a computer.

Analog signal cable

Digital signal cable
(NL-C01E, purchased separately)

Analog RGB output terminal

Digital RGB output terminal

• Paying attention to connector orientation, firmly insert the signal cable
into the PC, and then tighten the screws at both sides.

Notes:

• When using a 2-input cable, set [INPUT-2] to [2LINES].

• The monitor connected to the mini D-sub connector of the 2-input
cable may not be automatically recognized and setup under Plug &
Play. Perform storage of setup information manually.

3. Set the input terminal to which the Belkin ADC-DVI adapter is con­nected to ON.

Use the SELECT button to select [INPUT1] or [INPUT2], and use
the e d buttons to select [ON] and [OFF].

• Do not set to [ON] if you are not using a Belkin ADC-DVI adapter,
as this may result in incorrect display.

4. Press the power button, and turn off the monitor power.
This completes setting.

LL-T1820-H/B CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS

2 – 2

PC-UM10M

Connect the accessory audio cable

When the accessory audio cable is connected to the audio output termi­nal of the computer, the sound of the connected computer is output
from the display speakers. You can also use the headphone jack of the
display.

Audio input terminal

Audio cable

To audio output
terminal

CONNECTION OF HEADPHONES
(COMMERCIALLY AVAILABLE)

Headphones (commercially available) can be connected.

TURNING THE POWER ON

1. Turn on the main power of the monitor.

Main power switch

• When switching the main power switch on and off, always wait
for an interval of at least 5 seconds. Rapid switching may result
in malfunction.

2. Press the monitor’s POWER button.
The power LED will light up orange.

3. Turn on the computer.

Press power button

Turn on the computer
power supply.

Headphone terminal

Headphones

Notes:

• When the headphones are connected, no sound c an be heard from
the monitor speakers.

CONNECTING THE MONITOR TO A POWER SOURCE

Power terminal

ON

When a signal is input from the computer, the power LED lights up
green, and the screen is displayed (After power is turned on, it may
take a little time until the screen is displayed.)

• If the input terminal to which the computer is connected has not
been selected, the screen will not be displayed. If necessary,
perform input terminal switching. (right column)

Notes: (when using an analog signal)

• I f using the monitor for the first time or after having c hanged the sys ­tem settings during use, perform an automatic screen adjustment.

• When connecting to a notebook, if the notebook computer’s screen is
set so that it is displaying at the same time, the MS-DOS screen m ay
not be able to display properly. In this case, change the settings so
that only the monitor is displaying.

Power cord

AC outlet

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2 – 3

PC-UM10M

CHANGING BETWEEN INPUT TERMINALS

Use the INPUT button to switch between signal input terminals.

Select [INPUT-1] Select [INPUT-2]

INPUT-1

< >

The input signal type (ANALOG/DIGITAL) is displayed within angle
brackets < >.

When using a 2-input cable

Select [INPUT-2]

(analog)

INPUT

Select [INPUT-1]

INPUT-1

INPUT-2

< >

INPUTINPUT

Select [INPUT-2]

(degital)

2. INST RUCTIONS FOR ATTACHING A VESA COM­PLIANT ARM

An arm or stand based on the VESA st andard (com mercially available)
can be attached to the monitor.
Procurement of the arm or stand is at the customer’s discretion.

Arms or stands able to be used

Attachments must satisfy the following.

• Compatible with the VESA standard

• Have a gap of 100 mm x 100 mm between the screw holes on the
section to be attached

• Not be likely to fall off or break off after being attached to the monitor.

How to attach the arm or stand

• Be careful not to overly bend the cable or add extension cords as this
could lead to malfunction.

• While following these instructions, please also refer to the installation
instructions in the operation manual included with the arm or stand.

1. Remove the cable.

2. Spread out a soft cloth on a suitable horizontal surface.

3. Being careful not to damage the monitor, gently lay the monitor on it
display-side down.

INPUT 2-A

<ANALOG>

Note:

• When there is no input signal, [NO SIGNAL] is displayed.

INPUT

INPUT 2-D
<DIGITAL>

TURNING THE POWER OFF

1. Turn the computer off.

2. Press the monitor’s POWER button.
The Power LED will disappear.

Turn the computer off

OFF

If the monitor will not be used for a long time, turn off the main power
switch of the monitor, and remove the power plug from the outlet.

Press power button

Caution: Securely grasp both the display and stand, and gently tip over.

When the monitor is inclined, the stand may suddenly pop out
and cause injury.

4. Remove the four screws and then remove the stand from the moni­tor.

Notes: • The stand is specially made for use with this monitor. Once

having removed the stand, never attempt to attach it to
another device.

• Once having removed the screws, store them together with
the stand and if the stand is ever re-attached be sure to use
the original screws. Using different screws could lead to a
malfunction.

Caution: Do not disassemble the stand. Parts may spring out and cause

injury.

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PC-UM10M

5. Attach the arm to the monitor with the four screws.

Note: The screws used to attach the arm should be M4 screws with a

length of 6 mm ~ 8 mm protruding from the surface to be
attached. Using different screws could lead to malfunction or may
lead to the monitor falling off,internal damaged,personal injury.

6 - 8mm

Screw used to attach arm
Arm

Part of monitor to which arm is attached

11.Click on [Install].
Installation will begin.

12.When the message indicating installation is finished is displayed,
click [Next].

13.Click on [Finish].

14.Click on [Yes] and restart the computer.

For Macintosh

1. Quit all applications being used.

2. Load the accessory CD-ROM into the CD-ROM drive of the com­puter.

3. Open the CD-ROM.

4. Double click on the [Pivot] folder.

5. Select the desired language.

6. Double click on [Install MacPortrait].

7. Drag the [MacPortrait Install] icon onto the desired disk.
Installation will begin.

8. When the message indicating installation is finished is displayed,
click on [Restart].

Switching display direction

For Windows

1. Click the right mouse button or click the left mouse button on at
the lower right of the screen.

2. Select [Rotate], [Rotate to 0] or [Rotate to 90].

INFORMATION ABOUT THE PIVOT SOFTWARE
(LONG HEIGHT/WIDTH DISPLAY)

When rotating the display, change the display orientation using Pivot
Software.

Compatible operating systems (OS) for the Pivot Software (trial version)
that comes with the monitor:

Windows 98/2000/Me/XP
Macintosh OS 8.x - 9.1

• Depending on the graphics accelerator, it m ay be impossible to use
Pivot Software, even with a compatible OS.

For production information and inquiries regarding Pivot Software:

Portrait Displays, Inc.
(http://www.portrait.com)

Installation of Pivot Software (trial version)

For Windows

1. Quit all applications being used.

2. Load the accessory CD-ROM into the CD-RO M drive of the com­puter.

3. Open the [My computer] CD-ROM.

4. Double click on the [Pivot] folder.

5. Double click on [SETUP.exe].

6. Click [Next].

7. Choose [I accept the tems in the License Agreement].

8. Click [Next].

9. Input your Customer information [User Name] and [Organization].

10.Click [Next].

Rotate : The display direction switches.
Rotate to 0: The display direction is switched to long width.
Rotate to 90:The display direction is switched to long height.

For Macintosh

Choose [ROTATE Now] from at the lower right of the screen.

Each time [ROTATE Now] is selected, the display direction switches.

Notes:

• Rotation of the display to match the display direction is done manu­ally.

• The display direction on the OSD menu is switched using [OSD
PIVOT] on the [MODE SELECT-2] menu.

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2 – 5

2. ADJUSTMENT

2-1. ADJUSTMENT METHOD

1) All reset of the adjustment values
While pressing + , turn on the power.

2) Reset of the ADJUSTMENT menu

MENU

3) Adjustment lock and lock release
While pressing , turn on the power.

ȁ

Valid even when there is no input signal.

ȁ

When the above procedure is executed, key lock/release is changed over.

ȁ

When key lock is set, the black display is shown and "ADJUSTMENT LOCKED" is displayed for about 3 sec.

ȁ

When key release is set, the black display is shown and "ADJUSTMENT UNLOCKED" is displayed for about 3 sec.

ȁ

When key lock is set, all the keys except for the power key are disabled.

4) Backlight brightness adjustment

Adjust with and . (Select BRIGHT.)

5) Speaker sound volume adjustment

Adjust with and . (Select VOLUME.)

6) Display adjustment

MENU

ADJUSTMENT AUTO

(Analog only)

GAIN

MENU

CONTROL

(Analog only)

COLOR

MENU

CONTROL

MENU

MENU

simultaneously.Press +

CLOCK
PHASE
H-POS
V-POS

AUTO
BLACK LEVEL
CONTRAST

COLOR MODE (sRGB, STD, VIVID)

(Adjust with .)and
(Adjust with .)
(Adjust with .)
(Adjust with .)

(Adjust with .)
(Adjust with .)

and
and
and

and
and

(Adjust with .)

PC-UM10M

and

MENU

MODE SELECT-1

MENU

MODE SELECT-2 OSD

MENU

ၭ

WHITE BALANCE WHITE BALANCE

GAMMA

INFORMATION

(Adjust with .)

MENU

OFF TIMER

INPUT-2

LANGUAGE

EXPAND
SCALING
400 LINES

(Analog only)

(Adjust with .)
(Adjust with .)
(Adjust with .)

(Adjust with .)

OSD H-POSITION

MENU

COOL STD

MENU

and

(Display)

MENU

and

(Adjust with .)

OSD V-POSITION
OSD PIVOT

(Select with .)

MENU

and
and
and

WARM USER

(Adjust with .)

and

(When ON, Adjust with .)and

and
(Adjust with .)
(Adjust with .)

(Adjust with .)

R-CONTRAST
G-CONTRAST
B-CONTRAST

and

(Adjust with .)
(Adjust with .)
(Adjust with .)

and
and

and
and
and

LL-T1820-H/B CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS

2 – 6

PC-UM10M

7) Version display

While pressing + , turn on the power.

MENU

VERSION XX

2002. 05. 31
CHECKSUM XXXX

n

Valid even when there is no input signal.

n

The version , the date, and check sum are displayed.

n

When is pressed, the version display disappears.

MENU

n

All the keys except for and the power key are disabled.

n

The version display keeps ON until or the power key is

MENU

MENU

pressed.

8) Set/reset of usage time

While pressing + + , turn on the

INPUT

power.

[Range of adjustment values]

Range of adjustment Initial value

× 10000

0 -6 0

× 1000 0 - 9
× 100 0 - 9
× 10 0 - 9
× 10 - 9

* The maximum set value is 65535.

9) Diagnostic (Self test)

While pressing + , turn on the power.

n

When the diagnostic is executed, no menu is shown.

n

When the diagnosti c is exe c ute d, th e d ispla y sh ow s Red → Green → Blue
→ Yellow → Purple → Light Blue → White → Black repeatedly.

n

When the diagnostic is executed, all the keys exce pt for the po w er key are
disabled.

n

Turn off the power to terminate the diagnostic.

10) Informati on displa y

While pressing + , turn on the power.

INFORMATION

0
0
0
0

SET/RESET USAGE TIME

Press

ȼ

USAGE TIME

MANUAL

ȿ10000
ȿ1000
ȿ100
ȿ10
ȿ1

n

Valid even when there is no input signal.

n

While the top display of usage time setup is display, +

RESET

0
0
1
2
3

to enter the setup menu of usage time.

n

When is pressed with the cursor on MANUAL, the cursor is
shifted to RESET, the messag e of "RESET USAGE TIME" is displayed on
the black background and the usage time is reset to zero. Then the setup
menu of usage time is displayed again. (The cursor is on MANUAL.)

n

Press , and the cursor (the selected item) is shifted down.

n

When the cursor is on X10000, X1000, X100, X10, or X1, the value on
each digit of usage time can be changed with + .

n

When is pressed in the top display or in the setup menu of

MENU

usage time, the display disappears.

MODEL : LL-T1815-H
SERIAL No. : 2A001234
USAGE TIME : 00123 H

OK <MENU>

n

Valid even when there is no input signal.

n

The model name, the serial No., and the usage time are displayed.

n

When is pressed, the display disappears.

MENU

11) MAC DIGITAL setup

While pressing + , turn on the power.

MAC DIGITAL

INPUT-2 OFF ON

n

Valid even when there is no input signal.

n

When is pressed, the MAC DIGITAL mode is turned off, and
the machine performs normal DVH operations.

n

When is pressed, the MAC DIGITAL mode is turned on, and
the machine performs with digital fixed. To display digital signals with MAC,
it is set to ON. When set to ON, the ma chine performs with digital fixed
even when another than MAC is used.

n

n

The initial setup is OFF.

is pressed, the MAC DIGITAL setup menu disappears.

MENU

12) GAMMA setup

While pressing + + , turn on the

MENU

power.

GAMMA 10BIT OFF ON

n

When is pressed, the machine enters the 8bit mode.

LL-T1815 CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS

2 – 7

2-2. ADJUSTMENT ITEM LIST

BUTTON ITEM ADJUSTMENT DESCRIPTION

MENU MENU 1:

MENU 1

4

MENU 2

4

MENU 3

4

MENU 4

4

MENU 5

4

MENU END

c Select the item
e d 0~31 Adjusting the backlight

POWER ON, OFF

ADJUSTMENT

MENU 2:
GAIN CONTROL

MENU 3:
COLOR CONTROL

MENU 4:
MODE SELECT-1

MENU 5:
MODE SELECT-2

MANUAL CLOCK 0~255 CLOCK: The figure below demonstrates how to adjust so that verti-

PHASE 0~31 PHASE: Th e f igure below demon s t rat es how to adjust so th at hori-

H-POS 0~ H-POS (h orizontal position ing) and
V-POS 0~

AUTO Automatic screen adjustment

MANUAL BLACK

AUTO GAIN CONTROL Menu

COLOR MODE sRGB, STD, VIVID STD: Displays image with the color tone results from original

WHITE BA LANCE COOL • STD • WARM

GAMMA -10~10 Adj ust s o t hat da rk a nd bri gh t i mag es a re e asy t o s ee. I f th e sc re en is

IINFORMATION

OFF TIMER ON(1 - 23 hours) • OFF Power is auto m atically shut off wh en the set time elapses .
INPUT-2 1LINE • 2LINES

LEVEL
CON-

TRAST

0~100 BLACK LEVEL: Total screen brightness can be adjusted while

0~100 CONTRAST:While watching the color pattern, adjustments can be

(5 levels),
USER R • G • B:
0~100

V-POS (vertical positioning)

AUTO: Every menu option is automatically adjusted using the

sRGB: sRGB is international standard of color representation speci-

VIVID: Displays an image with dy namic and VIVID prim ary colors.
WHITE BALAN C E Menu

USER

dark and hard to see, increase the numerical value. If it is bright and
hard to see, lower the numerical value . ( e d buttons)

A model name (MODEL), a s erial no. (S/N), and u sage time
(USAGE TIME) of the display can be checked.

Set [1 LINE] when connecting digital or analog signal cables to a
DVI-I input terminal (INPUT-2) on the display.

cal flicker noise is n ot em it t ed. (e d buttons)

zontal flicker nois e is not emitted. (e d buttons)

To center the screen image within the boundaries of the screen,
adjust the left-right (H-POS) values and the up-down (V-POS ) val­ues. (e d buttons)

Options in the ADJUSTMEN T M enu can be ad justed auto m at ically
(CLOCK, PHASE, H -POS V-POS).

watching the color pattern. (e d buttons)

made so that all graduations appear. (e d buttons )

Auto Gain Control function.

scheme of liquid crystal panel.

fied by IEC (International Electrotechnical Commission).
Color conversion is made in taking account of liquid crystals
characteristics and re pre sents colo r ton e c lose to it o rigi nal
image.

COOL : Colo r to ne bluer than standa rd

• : Color tone slightly bluer than standard

STD : Color tone standard setting

• : Color tone slightly redder than standard

WARM : Color tone redder than standard
R-CONTRAST : e button for blue-green
G-CONTRAST : e button for purple
B-CONTRAST : e button for yellow

d button for red
d button for green
d button for blue

Set [2LINES] when connecting a 2-input cable.

OSD H-POSITION OSD H-POSITION (OSD horizontal position)

OSD V-POSITIO N OSD V-POSI T IO N (OSD vertical posit ion)

OSD PIVOT OFF(landscape)

LANGUAGE 7 countrys

EXPAND OFF • CN1 • CN2 Fo r display modes of less than 1280 X 1024 pixels, the display can

SCALING 0~4 SCALING (Level of scaling)

400 LINES 640 • 720 400 LINES (degree of resolu t ion)

• ON(portrait )

DEUTSCH, ENGLISH,
ESPANOL, FRANCAIS,
ITALIANO, NETHE R­LAND, SVENSKA

The position of the OSD display can be moved to the left and right.
(e d buttons)

The position of the OSD display can be m ov ed up and down.
(e d buttons)

The orientation of the OSD display can be changed.

LANGUAGE

Messages disp layed on the scre en and OSD M enu contents ca n
be changed to the fo llowing languages .

Dutch, English, French, German, Spanish, Italian, Sw edish.

be expanded if desired.

The sharpness of th e image can be adjus te d. (e dbuttons)

You can specify the horizontal resolution of a 400-line screen
when using US text, etc.(e d buttons)

640: 640 u 400 dot mode
720: 720 u 400 dot mode (US text etc.)

PC-UM10M

LL-T1820-H/B CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS

2 – 8

PC-UM10M

CHAPTER 3. DISASSEMBLY AND ASSEMBLY

1. Separating the display from the stand

1) Remove the four screws A and remove the display 1 from the stand 2.

2. Display

1) Remove the seven screws B and remove the rear cabinet 3.

2) Remove the seven screws C and remove the PWB shield 4.

3) Remove the harnesses D, F. Remove the three screws E and remove the
*** PWB 5.

4) Remove the harnesses G
PWB 6.

5) Remove the harness J. Remove the five screws K and remove the power
supply PWB 7.

6) Remove the eight screws L and remove the angle 8 from the LCD unit 9.

7) Remove the front cabinet F.

8) Remove the seven harnesses N. Remove the three screws O and remove
the inverter PWB G.

9) Remove the six screws P
LCD unit K.

, H. Remove the 18 screws and remove the main

, H, Q. Remove the angles H, I, J from the

A

1

A

A

2

8

H

6

D

I

I

F

5

4

C

I

E

I

L

G

L

K

9

3

L

C

B

C

I

B

C

C

B

C

K

J

K

12

P

7

10

N

15

11

B

B

O

N

13

O

LL-T1815 DISASSEMBLY AND ASSEMBLY

3 – 1

O

N

14

Q

R

3. Stand

1) Remove the five screws A and separate the *** 1 from the base 2.

2) Remove the cover 3.

3) Remove the six screws B and remove the *** 4.

4) Remove one screw C and remove the cover 5.

5) Remove the two screws D and remove the *** 6.

6) Remove the two screws E and remove the *** 7.

7) Pull the *** 9 out of the *** 8.

8) Remove the two screws F and remove the *** F.

9) Remove one screw G and remove the *** G.

10) Remove the three screws H and remove the *** H.

11) Remove the 17 screws and remove the *** I, *** J and *** K.

PC-UM10M

1

2

A

A

12

15

H

9

H

11

G

10

F

4

H

8

5

C

I

14

I

13

I

B

3

D

D

7

B

E

6

LL-T1820-H/B DISASSEMBLY AND ASSEMBLY

3 – 2

PC-UM10M

CHAPTER 4. TROUBLE SHOOTING

First of all, check that all the following accessory cables are properly connected.
Also check that the video mode setup of your PC is set to the signal timing conforming to this machine.

Accessory cables

• Exclusive-use AC adapter

• Exclusive-use analog signal cables (RGB cable, DVI-A cable)

• Exclusive-use digital signal cable (DVI-D cable)

THE DISPLAY DOES NOT WORK. (ANALOG RGB)

When the power button is pressed, does the LED
light up?

4 (Yes)

When the RGB cable is disconnected, does the
LED turn from Green to Orange?

4 (Yes)

When the RGB cable is connected again, does the
LED keep Green?
(Without changing from Green to Orange)

4 (Yes)

Does the B/ L light up? (∗ Light leaks from clear­ance of lead wires on the sheet metal side. )

4 (Yes)

Does the display work properly in each video
mode?

4 (Yes)

There is no abnormality.

3 (No) Execute 1.

3 (No) Execute 1.

3 (No) Execute 2.

3 (No) Execute 3.

3 (No) Execute 4.

1

4

Is 5V (Main PWB LD69) outputted? 3 (No) Check IC28 and its peripheral circuits.

4 (Yes)

Is 5V (Main PWB LD69) outputted? 3 (No) Execute 2.

4 (Yes)

Do Q8 (1 pin) and R196 supply an output? (4.5V) 3 (No) Execute 2.

4 (Yes)

CN5 (2 pin) supply on output? (2.0V) 3 (No) Check Q8 and its peripheral circuits.

Does FB9

Do Q7 (1 pin) and R185 supply an output? (4.5V) 3 (No) Execute 2.

Does FB9

Check connection of the SW cable and the SW
PWB.

•

4 (Yes)

4 (Yes)

CN5 (2 pin) supply on output? (2.0V) 3 (No) Check Q7 and its peripheral circuits.

•

4 (Yes)

LL-T1815 TROUBLE SHOOTING

4 – 1

2

4

Is the input signal port connected to the analog sig­nal cable?

4 (Yes)

Is DC+12V outputted from CN7 3PIN - 9PIN? 3 (No) Check the power unit.

4 (Yes)

Is LD60 at DC+5V?

4 (Yes)

Is LD64 at DC+3.3V?

4 (Yes)

Is LD65 at DC+2.5V?

4 (Yes)

Is the voltage across fuse F1 at DC+12.0V?

4 (Yes)

Is the R156 side of C144 at HIGH level (DC+5V)? 3 (No) Check the RESET circuit in the peripheral of IC17.

4 (Yes)

Is the FB15 level varied by ON/OFF of SW in the
front?

4 (Yes)

Is the Q6 output (connected to R157) change d to
HIGH level after turning on the main SW and then
to LOW level (DC+0V)?

4 (Yes)

Is 21PIN of IC16 oscillating?

4 (Yes)

Is the pin on the C113 side of X1 oscillating?

4 (Yes)

Are the signal waveforms of LD11 and LD12 (LD5,
LD6) normal?

4 (Yes)

Is the signal waveform of LD14 (LD15) normal? 3 (No) Check IC2 peripheral circuits.

4 (Yes)

Are the signal waveforms of LD18 and LD19 nor­mal?

4 (Yes)

Are the signal waveforms of LD22 and LD23 nor­mal?

4 (Yes)

Are the signal waveforms of LD20 and LD21 nor­mal?

(Yes)

3 (No)

3 (No)

3 (No)

3 (No)

3 (No)

3 (No)

3 (No)

3 (No)

3 (No)

3 (No)

3 (No)

3 (No)

3 (No)

IPress the INPUT key to switch to the proper input
signal port.

Check the DC+5V power line and IC25 peripheral
circuits.

Check the DC+3.3V power line and IC26 peripheral
circuits.

Check the DC+2.5V power line and IC27 peripheral
circuits.

Check the POWE R_ CT L si gn al an d IC 24 per i ph e ra l
circuits.

Check the MAINPW_IN signal and wiring of the main
SW from CN5 - SW PWB.

Check Q6 peripheral circuits.

Check IC 16 and the clock circuit in the peripheral of
X2.

Check IC18 and the clock circuit in the peripheral of
X1.

Check the analog signal cable and CN1 (CN2).

Check IC3 and IC4 peripheral circuits.

Execute 5. Check the microcomputer circuit. /
GM5060

Remove R96/R97 and check if the signal waveform
on the IC8 side is normal or not.

4 (Yes)

DEN line.

Check the DCLK

•

3 (No)

PC-UM10M

Replace IC8

Is the signal waveform of RN31 - RN35 normal?

(Yes)

3 (No)

Is the positive (+) side (not installed) of C161 at
DC+3.3V?

4 (Yes)

Is R246 at HIGH level (DC+3.3V)? 3 (No) Check IC14 peripheral circuits.

4 (Yes)

Remove the LCD module, and check if the signal
waveform of RN31 - RN35 normal or not.

4 (Yes)

LL-T1820-H/B TROUBLE SHOOTIN G

3 (No)

3 (No)

Check FB17 and IC28 periph­eral circuits.

Check IC23 peripheral circuits.

4 – 2

PC-UM10M

(Yes)

Replace the LCD module.

Is the positive (+) side of C162 at DC+12V? 3 (No) Check IC24 peripheral circuits.

4 (Yes)

Is 7PIN of ICN6 at DC0V? 3 (No) Check R221.

4 (Yes)

Replace the LCD module

4 (Yes)

3

4

Is the main PWB LD54 at DC +12V?

4 (Yes)

Is LD58 at DC+5V?

4 (Yes)

Is LD56 at DC+2.5V or less?

4 (Yes)

Is 1PIN of CN2 - CN7 of the inverter PWB unit at
about 600Vrms? (Use extreme care to prevent
against an electrical shock. Use a high voltage
probe of 100:1 or more for measuring the voltage.)

4 (Yes)

Check the lamp in the LCD module.

3 (No)

3 (No)

3 (No)

3 (No) Replace the inverter PWB unit.

Check F3 in the power unit, the power line, and the
FB18 line.

Check IC14, FB21, D18, and CN8 peripheral cir­cuits.

Check the main PWB and the DC jack PWB in the
peripheral of IC14.

4

4

Are LD60 and LD61 at DC+5V?

4 (Yes)

Is LD64 at DC+3.3V?

4 (Yes)

Is LD65 at DC+2.5V?

4 (Yes)

Does the whole display remain black?

(No)

Is the display size abnormal?

(No)

3 (No)

3 (No)

3 (No)

3 (Yes)

3 (Yes)

Check the DC+5V power line and IC25 peripheral
circuits.

Check the DC+3.3V power line and IC26 peripheral
circuits.

Check the DC+2.5V power line and IC27 peripheral
circuits.

Is the voltage across fuse F1 at DC+12.0V?

4 (Yes)

Is the oscillating circuit of X1 and X2 normal
(10MHz)? 3 (No)

4 (Yes)

Are the signal output of LD20 and LD21 normal? 3 (No) Execute 2.

4 (Yes)

Check IC23 peripheral circuits, or CN6 and the LCD
module.

Are the adjustment items of ADJUSTMENT and
MODE SELECT are properly set? 3 (No)

4 (Yes)

Check X1, X2, IC15, the peripheral circuits, and the
software.

3 (No)

Check F1, IC14 and IC24
peripheral circuits.

Check the oscillation circuit of
X1 and X2 in the peripheral of
IC16.

Set the items properly according
to the LCD display adjustment
procedures.

LL-T1815 TROUBLE SHOOTING

4 – 3

4 (No)

Does the color flicker when displaying whole
black from the signal source?

4 (No) 4 (Yes)

Does the display deflect or flicker?

(No)

3 (Yes)

3 (Yes)

Check IC10, IC11, and IC12 peripheral circuits.

Are the adjustment items of ADJUSTMENT and
MODE SELECT are properly set? 3 (No)

4 (Yes)

ICheck IC2, IC3, and IC4 peripheral circuits.

PC-UM10M

Set the items properly according
to the LCD display adjustment
procedures.

Is there any abnormality in the colors of the LCD
display? 3 (Yes)

(No)

Are the adjustment contents saved after comple­tion of adjustment of the display?

4 (Yes)

Can the inputs be switched normally? 3 (No) Check IC1, IC2, IC3, and IC4 peripheral circuits.

4 (Yes)

No abnormality

3 (No)

Are the adjustment items of GAIN CONTROL and
WHITE BALANCE properly set? 3 (No)

4 (Yes)

Are the analog color signal outputs normal? (Pins on
the IC8 side of C7, C11, C15)

4 (Yes)

Is the abnormal section shifted by varying BRIGHT
CONTRAST with the gradation pattern?

4 (No)

Check IC10, IC11, and IC12 peripheral circuits.

Check IC13 and IC16 peripheral circuits.

5

4

Is the R156 side of C144 at HIGH level (DC+5V)?

4 (Yes)

Is the Q6 output (connected to R157) change d to
HIGH level after turning on the main SW and then
to LOW level (DC+0V)?

4 (Yes)

Are signal waveforms provided at 12PIN - 19PIN
of IC18?

4 (Yes)

Are signal waveforms provided at RN30, R166,
and R168?

4 (Yes)

Check IC8.

3 (No)

3 (No)

3 (No)

3 (No)

Check the RESET circuit in the peripheral of IC17
and IC14.

Check Q6 peripheral circuits.

Check IC18 and IC19 peripheral circuits.

Check RN30, R166, and R168 (the control line of
IC16 and IC8).

•

3 (No)

3 (Yes)

Set the items properly according
to the LCD display adjustment
procedures.

Check IC1 peripheral circuits.

Display the RGB color gradation
of RN1 - RN12 output data
lines, and check the line where
there is any abnormality.

LL-T1820-H/B TROUBLE SHOOTIN G

4 – 4

PC-UM10M

THE PC DISPLAY DOES NOT WORK. (DIGITAL DVI)

Does the display work normally with analog inputs? 3 (No) First, check with analog inputs.

4 (Yes)

Is 14Pin of CN2 at DC+5V? 3 (No) Check CN2 and the signal source.

4 (Yes)

Are the signal levels of 1PIN, 2PIN, 9PIN, 10PIN,
17PIN, 18PIN, 23PIN, and 24PIN of CN2 changed?

4 (No)

Are the waveforms at 1PIN and 2PIN of IC7
changed normally when the resoluti on is chan ged ?

4 (Yes)

Check IC7and IC8.

3 (Yes)

3 (No)

IIC8 abnormality

Check IC7 peripheral circui ts.

THE FIRMWARE CANNOT BE UPGRADED

Connected to the analog input CN1?

4 (Yes)

Is SW1 set to 1, 2 side? (CN1 side when viewed
from you)

4 (Yes)

Is 2PIN of Q16 at the GND level? 3 (No) Check SW1 and R258.

4 (Yes)

Are 1PIN and 13PIN of IC6 changed normally? 3 (No) Check IC6 peripheral circuits.

4 (Yes)

Are signal waveforms provided at 12PIN - 19PIN
of IC18?

4 (Yes)

Check 31, 32, 33, 35, and 44PIN of IC15. (If there
is no abnormality, IC15 or IC19 is defective.)

3 (No)

3 (No)

3 (No)

Connect the jig fro rewriting the firmware to the
analog input CN1.

Set SW1 to 1, 2 si de ( CN1 side wh en v iew ed f rom
you).

ICheck IC18 and IC19 peripheral circuits.

AUDIO DOES NOT SOUND

Is the audio cable connected to CN2 of the
AUDIO PWB?

4 (Yes)

Is 1PIN of CN1 at DC+12V?

4 (Yes)

Is the voltage at 2PIN of CN1 changed by varying
the sound volume?

4 (Yes)

Are 3PIN and 4PIN of CN1 changed to the GND
level when any display is made?

4 (Yes)

Is 5PIN of CN1 at the GND level?

4 (Yes)

Replace the AUDIO PWB.

3 (No)

3 (No)

3 (No)

3 (No)

3 (No)

Connect the audio cable to CN2 of the AUDIO
PWB.

Check Q15 of the main PWB and the AU12V
power line.

Check IC15 and its peripheral circuits.

Check IC20 and its peripheral circuits.

Check CN1, the cable connected to CN1, and
CN3 of the main PWB.

LL-T1815 TROUBLE SHOOTING

4 – 5

PC-UM10M

CHAPTER 5. WAVE FORM

Waveform measurement condition: Input each of the display patterns and measure the waveform (timing chart)

Wave-form No. Measurement point Name of waveform Display pattern

1 IC16’s 21PIN XIN1 Arbitrary
2 X1's PIN on C113 side XIN2 A rbitrary
3 LD12 VSYNC Arbitrary
4 LD11 HSYNC Arbitrary
5 LD20 LCD CLK Arbitrary
6 LD21 LCD DE Arbitrary
7 IC23's 29, 30, 41, 42PIN LVDS CK Arbitrary
8 RN1 - RN12 LCD DATA Pattern in every 2 lines of black and white

9 RN1 - RN12 LCD DATA Pattern in every 2 lines of black and white
10 IC8 side of C7, C11, C15 RGB OUT 16 monochromatic gradation patterns
11 IC10/11/12's 2, 3, 5, 6, 8, 9, 11, 12, 39, 40, 42,

43, 45, 46, 48, 49PIN

12 IC10/11/12's 2, 3, 5, 6, 8, 9, 11, 12, 39, 40, 42,

43, 45, 46, 48, 49PIN

SDRAM I/O DATA Pattern in every 2 lines of black and white

SDRAM I/O DATA Pattern in every 2 lines of black and white

CAUTION

Probe: Tectronix TDS64BB
Reception mode: VESA 1280 X 1024

H: 80kHz V: 75Hz DOTCLK: 135MHz

WAVEFORM FIGURE

Oscilloscope:
Input signal:

WAVE FORM1 : XN1(

GND

Tectronix TDS64BB
VESA 1280 X 1024
H: 80kHz V: 75Hz
DOTCLK: 135MHz

IC16’s 21PIN

Frequency: 24MHz
Display screen: Arbitrary

2V/DIV, 25ns/DIV

WAVE FORM2 : XIN2(

X1's PIN on C113 side

)
Frequency: 24MHz
Display screen: Arbitrary

2V/DIV, 25ns/DIV

GND

)

WAVE FORM3 : VSYNC (LD12)

Frequency: 75MHz
Display screen: Arbitrary

GND

LL-T1815 WAVE FOR M

5 – 1

2V/DIV, 2.5ms/DIV

PC-UM10M

WAVE FORM4 : HSYNC (LD11)

Frequency: 80kHz
Display screen: Arbitrary

2V/DIV, 5µs/DIV

GND

WAVE FORM5 : LCD CLK (LD20)

Frequency: 54MHz
Display screen: Arbitrary

2V/DIV, 10ns/DIV

WAVE FORM7 : LVDS CK (

Frequency: 54kHz
Display screen: Arbitrary

500mV/DIV, 10ns/DIV

GND

WAVE FORM8 : LCD DATA (RN1 - RN12)

Display screen: Pat tern in every 2 lines of black and

IC23's 29, 30, 41, 42PIN)

white

2V/DIV, 4µs/DIV

GND

WAVE FORM6 : LCD DE (LD21)

Frequency: 64Hz
Display screen: Arbitrary

2V/DIV, 5µs/DIV

GND

GND

WAVE FORM9 : LCD DATA(RN1 - RN12)

Enlarged

GND

Display screen: Pattern in every 2 lines of

2V/DIV, 20ns/DIV

black and white

LL-T1820-H/B WAV E F ORM

5 – 2

PC-UM10M

0

WAVE FORM10 :RGB OUT (

Display screen: 16 monochromatic gradation patterns

500mV/DIV, 4µs/DIV

GND

WAVE FORM11 :

SDRAM I/O DATA (IC10/11/12's 2, 3, 5, 6, 8, 9, 11, 12, 39,

40, 42, 43, 45, 46, 48, 49PIN

Display screen: 16 monochromatic gradation patterns

51V/DIV, 2µs/DIV

IC8 side of C7, C11, C15)

)

GND

WAVE FORM11 :

Enlarged

GND

SDRAM I/O DATA (IC10/11/1 2' s 2, 3, 5, 6, 8, 9, 11 , 12 , 3 9, 4

42, 43, 45, 46, 48, 49PIN

)

Display screen: Pattern in every 2 lines of black an

white

1V/DIV, 50ns/DIV

LL-T1815 WAVE FOR M

5 – 3

PC-UM10M

FSADDR(0-12)

FUSE

IC9

AV33

F2

FUSE

CON1

AC Inlet

F1

FUSE

Power supply unit

ADO_12V

(3.3V)

IC26

PQ1CZ21H2Z

DV3 3

BA33C 25 F P

V25

PV33

A

IC27

PQ1CZ21H2Z

V25
D

(2.5V)

F

V12

BLTVR

ON/OF

INVERT ER

BACK-LIGHT

CN8

E

F1

FUS

R

BLTV

/BKLT_EN

(ROM)

/BKLT_EN

BLTVR

IC15

M62334FP

IC24

PQ20WZ11

(DA CON)

A

SCL

SD

LCD12V

LCD panel

IC10

FSCLK

FSCKE

FSRAS

FSDATA(0-47)

(SDRAM)

HY57V161610

FSWE

FSCAS

IC11

FSDQM 0

FSDQM 1

FSDQM 2

FSDQM 3

(SDRAM)

HY57V161610

IC12

(SDRAM)

HY57V161610

RA(7-0)

CN6

GA(7-0)

IC13

LASH MEMORY
F

BR24C16

RACL K I N+ / -

RAIN(0-4)+/-

IC23

THC63LVD823

BA(7-0 )

RB(7-0)

BB(7-0 )

GB(7-0)

LVDS

RBCLKIN+/-

RBIN(0-4)+/-

IC19

39SF040

DEN

DCL K

D12V)
LC

IC28

F3

CON2

(5V)

LM317EMP

MVC C

XMAIN_O U T

FUSEF4FUSE

IC25

DVCC

F5

CN7

(5V)

PQ1CZ21H2Z

AVCC

IC8

gm5020

V

IC4

H

74LVC86A

(SCALER)

SEL

IC3

74LVC157A

H

H1

H2

POL

V

IC2

AD8612

H1

H2

DC_SCL

V

D

DDC_SDA

RXC(+/-) RX2(+/-)

z

X1

XTAL

24MH

IC1

H

)

BA7657F

(ANALOG SW

V

H/V

SEL

RGB

H

RGB

RGB

SDA

SCL

GPIO(0-7) HDATAF(0-3)

HFS

/IRQ

HCL K

TRA

RESET

z

IC17

PST598

RX1(+/-) RX0 (+/- )

X3

XTAL

RESET IC

SDA

24MH

IC5 BR24C21

SCL

IC6 74LV4053A

IC16

P89C51RD2

TXD

RXD

COM)
(Ǵ

IC14 PCA9557

/VPP
EA

IC20 VHC595

CN5SW2

CN1

SW6

SW3

SW4

MENU

SELECT

POWER

D1

+

-

MUTE

ADO_VR

STANDBY

PW_IN

+

−

INPUT

AUDIO UNIT CN3

CHAPTER 6. BLOCK DIAGRAM

IN1

CN1 MINI D-SUB 15P

IN2

CN2

ANALOG INPUT(DVI)

IC7

U9882F
B

SCL

SDA

DVI)

CN2

DIGITAL INPUT

LL-T1815 BLOCK DI AGRAM

6 – 1

SELECT

SW1

MENU

B

SW PW

SW1

PUT

SW5

IN

PC-UM10M

1/7

12345678

12345678

12345678

12345678

B

B

B

DV33

R53

R52

GND

GND

R51

R50

R54

2.2kF

EMPTY

LEB

LEAV-INA-

2.2kF

EMPTY

4.7KJ

V+

Q2

910111213

HS2

R63

R62

23

DTC143EE

R61

INB-

INA+ INB+

R60

EMPTY

0J

1

680F

680F

B

R66

DGND

AD8612

47kJ

R65

DGND DGND

HS1

R67

EMPTY

C21

0.1uF

DV33

IC4

SN74LVC86A(PW)

C23

DV33

16151413121110

DGND

SELECT

IC3

1234567

SN74LVC157A(PW)

0J

VS2

DGNDDGND

C24

0.1uF

14

131012

11

4Y

4B3B4A

VCC

1A1Y2A

1B

2B

134

2

5

0.1uF

4A

4B4Y3A

ST

VCC

1A1B1Y2A2B2YGND

LD14

LD17

LD16

LD15

HS1

HS2

VS1

VS2

VS1

VSYIN 3

HSYIN 3

LD19

LD18

87

3Y

3A

2Y

GND

6 9

R72

09

3Y

3B

8

0J

DGND

DGND

[SELECT]

H : B

DGND

R76

33J

R74

33J

R75

EMPTY

L : A

C15

AGND

L3

R18

CTL

GIN2

0.01uF(B)

R19

100J

101112 13

BIN 3

R24

EMPTY

33J

MMZ1608D121B

1415161718192021222324

VOUT

BOUT

GND

BIN2

VIN1

0.01uF(B)

10uF(B)(3216)

C14

C16

C

C

C

C

SEL 5

[SEL]

H:INPUT1 ( RGB )

L:INPUT2 ( DVI Analog )

[MPU ]

23

1

DGND

Q1

DTC143EE

DVCC

R32

4.7KJ

AGND

AVCC

R34 33J

R45 33J

R27

0J

VIN2

[CTL]

H : IN1

L : IN2

AGND AGND

0.01uF(B)

C17

FB1

BLM18PG600SN1

C20

0.1uF
IC2

14

QB

QB

QA

QA

1234567 8

D

D

D

D

RIN 3

GIN 3

C7

0.01uF(B)

C11

0.01uF(B)
R12

EMPTY

R2

EMPTY

AGND

R1

33J

R10

33J

L2

L1

MMZ1608D121B

MMZ1608D121B

AGND

R9

100J

R4

C3

AVCC

10uF(B)(3216)
C1

10uF(3216)

0.01uF(B)
C2

100J

C6

0.1uF

AGND

HIN2

HIN1

HOUT

ROUT

RIN1

HDET

GIN1

IC1

GND

BA7657F

123456789

0.01uF(B)

0.01uF(B)

10uF(B)(3216)

10uF(B)(3216)
C4

C8

C5

C9

VCC

GOUT

BIN1

GND

10uF(B)(3216)

C10

CV_IN

RIN2

AGND

CSOUT

GND

0.01uF(B)

10uF(B)(3216)

C12

C13

A

21

21

21

21

HREF1 5

HREF2 5

3

3

3

3

CHAPTER 7. CIRCUIT DIAGRAM

C19

33pF

C18

EMPTY

DGND

DGND

R29

330J

R26

330J

R8

75J

R16

75J

R23

75J

AGND

AGND

AGND

R22

GREEN1

AGREEN2

R15

R14

R13

2.7kJ

2.7kJ

EMPTY

AGND

R17

AGND

AGND

LD4

5.1J

BLUE1

2.7kJ

AGND

R21

2.7kJ

AGND

R20

EMPTY

AGND

LD6

LD5

HS1

VS1

0J

0J

R25

R28

ABLUE2

AHSY2

AVSY2

C

C

C

C

32

1

D2

DAN217U

32

1

D1

DAN217U

32

AVCC

LD1

ANGND2

INPUT 2

D

D

D

D

AGND

AGND

R11

5.1J

R3

5.1J

R6

2.7kJ

AGND

AGND

R5

EMPTY

AGND

LD3

LD2

RED1

ARED2

R7

2.7kJ

1

D3

DAN217U

R31

R30

RGB CONNECTOR

4.7kJ

4.7kJ

9.NC(VCC)

1.RED

2.GREEN

D8

DAN217U

32

DGND

32

DGND

DAN217U

D6

32

D5

DAN217U

32

D4

DAN217U

32

AVCC

10.GND

12.SDA

11.GND

3.BLUE

4.GND

5.RETURN

1

DDC5V

1

DDC5V

1

1

1

CN1

KHEY-15S-1A3F-14

INPUT 1

14.VSYNC(VCLK)

13.HSYNC

15.SCLK

6.RED RETURN

7.GREEN RETURN

8.BLUE RETURN

D7

DGND

DAN217U

LD7

R36

0J

5

R33 0J

10

DGND

DGND

R38

R35 0J

R49

R48

R47

VS2

75J

2.7kJ

2.7kJ

EMPTY

AGND

R64

R59

75J

AGND

R58

2.7kJ

AGND

R55

5.1J

R57

2.7kJ

AGND

AGND

R56

EMPTY

AGND

LD12

LD13

1

MVCC

23

D9

B

B

B

B

R42

75J

AGND

R41

2.7kJ

AGND

R44

5.1J

5.1J

R40

2.7kJ

AGND

AGND

R46

R43

EMPTY

LD8

LD9

LD10

LD11

HS2

BLUE2

RED2

GREEN2

AGND

9

4

17283

6

DGND

1112131415

DGND

R37 0J

R39 0J

330J

AGND

AGND

AGND

RB715F

C26

33pF

C22

EMPTY

DDC5V

DGND

DGND

R68

330J

D11

DAN217U

32

DDC5V

R70

4.7kJ
DGND

32

DDC5V

R69

4.7kJ
DGND

R71

4.7kJ

R73

C25

2

0.1uF
4

1

3

NC

NC

GNDSDA

WP#

SCLK

VCLK

VCC

IC5

BR24C21F(SOP)

5

678

EMPTY

MVCC

SW1

SSSS916900

1

DGND

1

DGND

D10

DAN217U

DGND

R78

47kJ

MVCC

R77

47kJ

DDC5V

3
2
1

TXD 5

1234567

IC6

2Y1

2Y0

VCC

2-COM

16151413121110

MVCC

SCL / RXD

SDA / TXD

R80

47kJ

R79

47kJ

3Y1

1-COM

F_SW 5

R258

10kJ

5

S_PORT

RXD 5

INH

3Y0

3-COM

1Y1

1Y0AB

C27

D13

UDZS5.6B

D12

UDZS5.6B

A A

A A

A A

A

8

GND

9

0.1uF

GND

C

SN74LV4053A

DGND

DGND

DGND

L : Y0

H : Y1

R81

EMPTY

87654

87654

87654

87654

LL-T1815 CIRCUIT DIAGRAM

7 – 1

PC-UM10M

B

B

B

D

D

D

D

C

C

C

C

B

A

2/7

R91

ANALOG_SEL 5

MVCC

6

Q4

1234

R92

4.7kJ

4.7kJ

14

VCC

WPB

DUAL_PCB

5

B1

E1
C1B2E2 C2

BANKSEL

910111213

DDCENA

BANKSEL

12345678

12345678

12345678

12345678

RX2- 3

RX2+ 3

RX1- 3

RX1+ 3

RX0- 3

RX0+ 3

RXC+ 3

RXC- 3

AVSY 1

ARED 1

ABLUE 1

AHSY 1

AGREEN 1

ANGND 1

DVI_5V

HL

ANALOG_SEL

AUTO

1

MVCC

23

EDID

ANALOG

SELECT(Reset)
L

DIGITAL_SEL

D14

RB715F

ILLEGAL

DIGITAL

EDID

H

1kJ

IMH4A

R94

47kJ R93

L : BANK0

H : BANK1

SCL_MON

DGND

DIGITAL_SEL 5

21

21

21

21

DGND

3

3

3

3

FB2

BLM18PG600SN1

R82 10kJ

R83

R84

EMPTY

100J

R85

100J

R89

R88

R87

R86

4.7kJ

4.7kJ

4.7kJ

4.7kJ

C29 0.1uF

SCL_PC0

SDA_PC0NCSCL_PC1

IC7

SDA_PC1NCGND SDA_MON

12345678

BU9882F

BANK0 : ANALOG

BANK1 : DIGITAL

DGND

124567910121316171820212324

CN2

RX2-

RX2+

D

D

D

D

3

GND

RX4-

RX4+

SCL

SDA

VS

RX1-

RX1+

11814

GND

RX3-

RX3+

15

5V

HP

GND

RX0-

RX0+

DGND

19

22

GND

RX5-

RX5+

GND

C1C2C3C4C5

RXC-

RXC+

AHSY

ARED

ABLUE

ANGND

AGREEN

C

C

C

C

LL-T1820-H/B CIRCUIT DIAGRAM

SD-74320-1004

B

B

B

B

A A

A A

A A

A

87654

87654

87654

87654

7 – 2

PC-UM10M

B

B

B

D

D

D

D

C

C

C

C

B

A

3/7

12345678

12345678

12345678

12345678

DCLK 6

LD21

LD20

R97 33J

R96

33J

GV33

DV25_1

C51

10uF(3216)

C49

C48

C47

C46

C45

C44

C43

C42

C41

C40

C39

C38

C37

C36

C35

C34

C33

C32

C31

10uF(3216)

GV33

FB3

DV33

DVS 6

DHS 6

DEN 6

LD22

LD23

R262 33J

R263 33J

+

220pF

220pF

220pF

220pF

220pF

220pF

220pF

220pF

220pF

0.1uF

0.1uF

0.1uF

0.1uF

0.1uF

0.1uF

0.1uF

0.1uF

0.1uF

+

BLM41PG600SN1

DGND

GB[7..0] 6

RB[7..0] 6

BA[7..0] 6

GA[7..0] 6

RA[7..0] 6

R265

EMPTY

R264

EMPTY

G20

F19

DVS

DCLK

U17
U15
U13
U12
U10
U8
U6
U5
T4
R17
N17
L17
L4
J17
G17
E17
D16
D15
D13

U16
U14
U11
U9
U7
U4
T17
P17
N4
M17
K17
K4
F17
D17
D14
D12

AVDD_2.5

AVDD_2.5

A6A7A8

AV25

C50

EMPTY(22uF/16V(WX))

C30

EMPTY(22uF/16V(WX))

D

D

D

D

RA7

RA6

RN1

123

F20

F18

H17

H18

DHS

DEN

DARED7

DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3
DVDD_3.3

DVDD_2.5
DVDD_2.5
DVDD_2.5
DVDD_2.5
DVDD_2.5
DVDD_2.5
DVDD_2.5
DVDD_2.5
DVDD_2.5
DVDD_2.5
DVDD_2.5
DVDD_2.5
DVDD_2.5
DVDD_2.5
DVDD_2.5
DVDD_2.5

AVDD_2.5

AVDD_2.5

AVDD_2.5

A9

A10

A11

AV33

DGND

EMPTY(10uF/3216)

10uF(3216)

RA4

RA3

RA2

RA1

RA5

RA0

33J*4

678

45

678

123

45

RN2

H19

H20

J20

J19

J18

K18

DARED6

DARED5

DARED4

DARED1

DARED2

DARED3

DARED0

AVDD_2.5

AVDD_3.3

AVDD_3.3

AVDD_3.3

AVDD_3.3

AVDD_3.3

B2B6B7B8B9

C71

220pF

C70

220pF

C69

220pF

C68

220pF

C67

220pF

C66

220pF

C65

220pF

C64

220pF

C63

0.1uF

C62

0.1uF

C61

0.1uF

C60

0.1uF

C59

0.1uF

C58

0.1uF

C57

0.1uF

C56

0.1uF

C55

C54

10uF(3216)

C53

+

DV25_1

FB4

BLM41PG600SN1

DV25

GA7

GA4

GA5

GA6

GA3

RN3

33J*4

678

123

45

123

33J*4

RN4

L20

K20

L18

K19

L19

DAGRN5

DAGRN6

DAGRN7

DAGRN4

AVDD_3.3

AVDD_3.3

AVDD_3.3

AVDD_3.3

E3A2A3A4B1B3B4

C3

D3

B11

C52

BA7

GA2

GA1

GA0

RN5

678

45

33J*4

M18

M19

M20

DAGRN0

DAGRN1

DAGRN2

DAGRN3

AGND

AGND

AGND

DGND

EMPTY(22uF/16V(WX))

BA5

BA3

BA4

BA6

33J*4

678

123

45

123

RN6

P20

P19

N19

N20

N18

DABLU4

DABLU3

DABLU6

DABLU7

DABLU5

AGND

AGND

AGND

AGND

AGND

C4C5C7

C81

220pF

C80

220pF

C79

220pF

C78

220pF

C77

0.1uF

C76

0.1uF

C75

0.1uF

0.1uF

C74

C73

10uF(3216)

AV25

FB5

BLM18PG600SN1

V25

RB6

RB7

BA0

BA1

BA2

RN7

123

678

45

33J*4

R19

R20

P18

B15

A15

DABLU0

DABLU1

DABLU2

DBRED6

DBRED7

AGND

AGND

AGND

AGND

AGND

D4D5D7

C11

AGND

+

RB5

RB4

RB1

RB3

RB0

RB2

33J*4

678

45

678

123

45

RN8

C15

B17

A17

C16

B16

A16

DBRED5

DBRED0

DBRED1

DBRED2

DBRED3

DBRED4

AGND

AGND

PLLVDD_3.3

PLLVDD_3.3

PLLVDD_3.3

F2

F4

E4

G1

D11

PV33

AGND

C72

EMPTY(22uF/16V(WX))

GB7

GB4

GB3

GB5

GB6

33J*4

678

123

45

123

33J*4

RN10

C18

A19

A18

C17

B18

DBGRN4

DBGRN6

DBGRN7

DBGRN5

PLLVDD_3.3

PLLVDD_3.3

PLLVDD_3.3

PLLVDD_3.3

J1

J3

H1

G3

C93

220pF

C92

220pF

C91

220pF

C90

220pF

C89

220pF

C88

0.1uF

C87

0.1uF

C86

0.1uF

C85

0.1uF

C84

0.1uF

C83

10uF(3216) RN9

AV33

FB6

BLM18PG600SN1

V33

GB2

A20

DBGRN3

DBGRN2

PLLGND

F3

+

C

C

C

C

GB1

678

B19

DBGRN1

PLLGND

G2

BB[7..0] 6

BB4

BB5

BB6

BB7

GB0

BB3

BB2

RN11

33J*4

678

123

45

123

45

33J*4

RN12

B20

C19

C20

D18

E18

D20

D19

DBBLU7

DBBLU6

DBBLU5

DBBLU2

DBBLU3

DBBLU4

DBGRN0

PLLGND

PLLGND

PLLGND

PLLGND

PLLGND

J2

K3

H2

H3

G4

PGND

AGND

C82

EMPTY(22uF/16V(WX))

FSDATA[0..47]4

BB0

BB1

FSDATA45

FSDATA46

FSDATA47

RN13

678

123

678

45

33J*4

E20

E19

R18

T19

T20

DBBLU0

DBBLU1

FSDATA47

FSDATA45

FSDATA46

RED+

RED-

GREEN-

GREEN+

BLUE-

BLUE+

E1

E2

D1D2C2

C1

BIN1

GIN1

RIN1

0.01uF(B)

0.01uF(B)

C94

C95

C96

100J

100J

R98

R99

R100

C105

220pF

C104

220pF

C103

220pF

C102

220pF

C101

0.1uF

C100

0.1uF

C99

0.1uF

C98

10uF(B)(3216)

L4

NLC3225/22uH

V33 PV33

FSDATA39

FSDATA40

FSDATA43

FSDATA44

FSDATA38

FSDATA42

FSDATA37

FSDATA41

RN15

33J*4

678

123

45

678

123

45

RN14

33J*4

T18

U18

U19

U20

V20

V19

W20

Y20

FSDATA44

FSDATA41

FSDATA42

FSDATA43

FSDATA40

FSDATA39

FSDATA38

ADC_TEST

RX2+

RX2-

A1

C9D9C8D8C6

C10

D10

RX2+2

RX2-2

0.01uF(B)

100J

AGND

+

C97

EMPTY(22uF/16V(WX))

FSDATA35

FSDATA36

FSDATA33

FSDATA32

FSDATA30

FSDATA34

FSDATA31

RN17

33J*4

45

123

678

123

45

RN16

33J*4

Y19

W19

V17

V18

Y18

W18

FSDATA35

FSDATA36

FSDATA31

FSDATA37

FSDATA34

FSDATA32

FSDATA33

IC8

gm5020

RX1+

RX1-

RX0+

RX0-

RXC+

RXC-

D6

RX1+2

RX1-2

RX0+2

RXC-2

RX0-2

RXC+2

V25V335V

PGND

FSDATA28

FSDATA26

FSDATA27

FSDATA25

FSDATA29

33J*4

678

45

678

123

RN18

W17

Y17

W16

Y16

V16

V15

FSDATA30

FSDATA29

FSDATA27

FSDATA26

FSDATA28

FSDATA25

CLKOUT

REXT

VBUFC

A5

B5

B10

1.0kF

R101

AV33

LD24

4

BA33C25FP

VO33

VCC

IC9

1

FSDATA18

FSDATA21

FSDATA23

FSDATA20

FSDATA19

FSDATA24

FSDATA22

RN19

33J*4

678

123

45

123

45

RN20

33J*4

Y15

Y14

W15

W14

V14

V13

W13

FSDATA23

FSDATA20

FSDATA24

FSDATA21

FSDATA22

FSDATA19

FSDATA18

XTAL

TCLK

VSYNC

HSYNC

J4

L2

K1

H4

XTAL

TCLK

HSYIN1

VSYIN1

1J

R103

LD25

1J

R102

5

VO25

GND

3

NC

2

FSDATA14

FSDATA17

FSDATA16

FSDATA13

FSDATA15

FSDATA12

RN21

678

123

45

678

45

33J*4

Y11

Y10

Y12

W11

Y13

V11

FSDATA13

FSDATA12

FSDATA16

FSDATA14

FSDATA17

FSDATA15

ANTEST

VDACP

EXTCLK

L3

F1

K2

LD26

C111

10uF(B)(3216)

+

C110

)

C109

10uF(B)(3216

+

C108

C107

10uF(3216)

C106

0.1uF

B

B

B

B

FSDATA8

FSDATA9

FSDATA11

FSDATA10

33J*4

678

123

45

RN22

V10

W10V6Y7W6Y6W9W7V8V9V7Y9

FSDATA8

FSDATA9

FSDATA10

FSDATA11

VCLK

YUV7

YUV6

YUV5

A12

B12

A13

C12

DGNDDGND

EMPTY

DGND

EMPTY

DGNDDGND

FSDATA5

FSDATA7

FSDATA4

FSDATA6

RN23

678

123

45

33J*4

FSDATA5

FSDATA4

FSDATA6

FSDATA7

YUV4

YUV3

YUV2

YUV1

B13

A14

B14

C13

FSADDR[13..0]4

FSADDR13

FSADDR11

FSADDR12

FSADDR10

RN25

33J*4

678

FSDATA0

FSDATA1

FSDATA3

FSDATA2

123

45

33J*4

RN26

123

678

123

45

RN24

33J*4

V2W1Y1W2Y2V3W3Y3V4W4W5Y5V5Y4T3V1U1U2U3

FSDATA0

FSDATA1

FSDATA2

FSDATA3

FSADDR13

FSADDR12

FSADDR11

YUV0

GPIO7/DOVL

GPIO6/DFSYNCn

GPIO5/TXD

GPIO4/RXD

GPIO3/T1

GPIO2

GPIO1/PWM1

L1

N1

M1M2M3

M4

C14

G19

G18

GPIO2

GPIO3

GPIO0

GPIO6

GPIO1

GPIO7

GPIO5

GPIO4

TCLK

2.7kJ

R104

AGND

FSADDR9

FSADDR7

FSADDR6

FSADDR8

FSADDR5

FSADDR4

678

33J*4

45

678

RN27

123

45

RN28

FSADDR9

FSADDR8

FSADDR7

FSADDR6

FSADDR5

FSADDR10

GPIO0/PWM0

HDATA3

HDATA2

HDATA0

HDATA1

P3

P4

P2

R2

R1

HDATAF0

HDATAF3

HDATAF1

HDATAF2

GPIO[7..0]5

XTAL

X1

24MHz(SMD-49)

C112

5pF

AV33

FSADDR0

FSADDR1

FSADDR2

FSADDR3

33J*4

678

123

45

FSADDR4

FSADDR1

FSADDR2

FSADDR3

HFSn/SDA

HCLK/SCL

P1

R3

HCLK5

HFS5

HDATAF[3..0]5

C113

5pF

FSCKE 4

FSCLK 4

R106 33J

R105 33J

R107 33J

33J*4

FSCLK

FSCKE

FSADDR0

IRQn

IRQINn/GPIO8

RESETn

T1

R4

/IRQ5

XGRE SET5

FSRAS 4

R108 33J

FSRAS

FSCAS 4

R109 33J

RN29

FSCAS

N2

FSDQM3 4

FSDQM1 4

FSDQM2 4

FSWE 4

678

123

45

W12

V12W8Y8

FSWE

FSDQM3

FSDQM2

FSDQM1

DDC_SCL

DDC_SDA

N3

A A

A A

A A

A

FSDQM0 4

33J*4

FSDQM0

DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND

21

21

21

21

T2
N13
N12
N11
N10
N9
N8
M13
M12
M11
M10
M9
M8
L13
L12
L11
L10
L9
L8
K13
K12
K11
K10
K9
K8
J13
J12
J11
J10
J9
J8
H13
H12
H11
H10
H9
H8

3

3

3

3

DGND

87654

87654

87654

87654

LL-T1815 CIRCUIT DIAGRAM

7 – 3

PC-UM10M

B

B

B

D

D

D

D

C

C

C

C

B

A

4/7

12345678

12345678

12345678

12345678

DV33

FSDATA35

FSDATA39

FSDATA32

FSDATA36

FSDATA38

FSDATA37

FSDATA33

FSDATA34

235689111239404243454648

DQ0

DQ1

DQ2

DQ3

DQ4

DQ5

DQ6

DQ7

VCCQ

44

VCCQ

38

VCCQ

13

VCCQ

7

VCC

25

VCC

1

A0A1A2A3A4A5A6A7A8A9A10

2122232427282930313220

FSADDR6

FSADDR1

FSADDR5

FSADDR2

FSADDR4

FSADDR7

FSADDR3

FSADDR0

FSDATA42

FSDATA40

FSDATA41

DQ8

DQ9

DQ10

FSADDR9

FSADDR10

FSADDR8

FSDATA43

FSDATA46

FSDATA44

FSDATA45

DQ11

DQ12

DQ13

A11

CLK

19

35341817161514

FSADDR11

FSDATA47

49

DQ14

DQ15

CKE

/CS

/RAS

/CAS

/WE

LDQM

36 37

UDQM NC

VSSQ
VSSQ
VSSQ
VSSQ

VSS
VSS

47
41
10
4

50
26

IC12

DGNDDGND

HY57V161610DTC-7

DGND

For IC10

C120

220pF

C119

220pF

C118

220pF

C117

0.1uF

C116

0.1uF

For IC11

C127

220pF

C126

220pF

C125

220pF

C124

0.1uF

C123

0.1uF

For IC12

C134

220pF

C133

220pF

C132

220pF

C131

0.1uF

C130

0.1uF

21

21

21

21

DV33

DV33

FSDATA19

FSDATA23

FSDATA17

FSDATA18

FSDATA22

FSDATA20

FSDATA16

FSDATA21

235689111239404243454648

DQ0

DQ1

DQ2

DQ3

DQ4

DQ5

DQ6

DQ7

VCCQ

44

VCCQ

38

VCCQ

13

VCCQ

7

VCC

25

VCC

1

A0A1A2A3A4A5A6A7A8A9A10

2122232427282930313220

FSADDR2

FSADDR7

FSADDR1

FSADDR3

FSADDR0

FSADDR5

FSADDR6

FSADDR4

FSDATA6

FSDATA3

FSDATA2

FSDATA4

FSDATA1

FSDATA5

FSDATA0

235689111239404243454648

DQ0

DQ1

DQ2

DQ3

DQ4

DQ5

DQ6

DQ7

VCCQ

44

VCCQ

38

VCCQ

13

VCCQ

7

VCC

25

VCC

1

A0A1A2A3A4A5A6A7A8A9A10

2122232427282930313220

FSDATA24

FSDATA26

FSDATA25

DQ8

DQ9

DQ10

FSADDR8

FSADDR9

FSADDR10

FSDATA9

FSDATA8

FSDATA10

DQ8

DQ9

DQ10

FSDATA27

FSDATA28

FSDATA30

FSDATA29

DQ11

DQ12

DQ13

CLK

A11

19

35341817161514

FSADDR11

FSDATA13

FSDATA12

FSDATA14

FSDATA11

DQ11

DQ12

DQ13

A11

CLK

19

35341817161514

FSDATA31

49

DQ14

DQ15

CKE

/CS

/RAS

FSDATA15

49

DQ14

DQ15

CKE

/CS

/RAS

/CAS

/CAS

/WE

/WE

LDQM

36 37

LDQM

36 37

UDQM NC

UDQM NC

VSSQ
VSSQ
VSSQ
VSSQ

VSS
VSS

VSSQ
VSSQ
VSSQ
VSSQ

VSS
VSS

IC11

47
41
10
4

50
26

IC10

47
41
10
4

50
26

HY57V161610DTC-7

DGND

HY57V161610DTC-7

DGND

DV33

R124

R122

R120

R118

R116

R114

R112

R110

10kJ

EMPTY

EMPTY

10kJ

EMPTY

10kJ

10kJ

EMPTY

R125

R123

R121

R119

R117

R115

R113

R111

DV33

C114

C115

10uF(3216)

EMPTY

10kJ

10kJ

EMPTY

10kJ

EMPTY

EMPTY

10kJ

0.1uF

DGND

DV33

DGND

C121

C122

10uF(3216)

0.1uF

R136

R134

R132

R130

R128

R126

10kJ

EMPTY

EMPTY

EMPTY

EMPTY

EMPTY

R137

R135

R133

R131

R129

R127

DV33

DGND

DV33

EMPTY

10kJ

10kJ

10kJ

10kJ

10kJ

C128

C129

0.1uF

10uF(3216)

DGND

DGND

3

3

3

3

DGND

FSADDR11

FSADDR7 FSDATA7

FSADDR8

FSADDR2

FSADDR5

FSADDR9

FSADDR3

FSADDR0

FSADDR1

FSADDR[13..0]3

FSDATA[0..47]3

D

D

D

D

FSADDR4

FSADDR6

FSADDR10

FSADDR9

FSADDR8

FSADDR13

FSADDR11

FSADDR12

FSADDR2

FSADDR5

FSADDR1

FSADDR0

FSADDR4

FSADDR7

FSADDR3

FSCLK3

FSCKE3

FSRAS3

FSCAS3

FSWE3

FSDQM13

FSDQM23

FSDQM33

FSDQM03

B

B

B

C

C

C

C

B

FSADDR6

FSADDR10

A A

A A

A A

A

87654

87654

87654

87654

LL-T1820-H/B CIRCUIT DIAGRAM

7 – 4

PC-UM10M

5/7

12345678

12345678

12345678

12345678

BRTVR 7

LD27

R138 1kJ

MVCC

AU12V

B

B

B

B

10kJ x 6

R184

R183

ANALOG_SEL 2

R182

R181

R180

R179

LED_RED

LED_GRN

7

LD68

QF

QH

QG

GS

GND Q'H

SCLR

G

74VHC595FT

89

10

13

0J

R199

IC19

R170

EMPTY

TC7SH08FU

Q16

DTC143EE

R172

RN30

123

HDATAF0

HDATAF[0..3]3

SST39SF040

DGND

R175

0J

R252

1kJ

R171

14

MVCC

IC21B TC74VHC74FT

DGND

C189

0.1uF

1

DGND

23

F_SW1

R178

R174

R176

R177

1kJ x7

678

33J*4

45

HDATAF1

HDATAF2

HDATAF3

/IRQ3

DGND

DGND

0J

9

12

R277 1kJ

GS

TXD

DGND

8

Q

Q
VCC

D

CLK

11

R268 0J

GPIO5

MVCC

RXD

RXD1

TXD1

B

B

B

B

DGND

DGND

GND

PRE

CLR

10713

R185

MVCC

1kJ

MVCC

Q7

MMBT3904LT1

1

LED_RED

GPIO[7..0]3

IC28

LM317EMP

V12_I

5

6

Q

14

D

2

IC21A TC74VHC74FT

R247 0J

DGND

R195

100J

23

R186

10kJ

MVCC

1

Q8

MMBT3904LT1

R196

1kJ

LED_GRN

R255

4.7kJ

R254

R253 1kJ

MVCC

LD69

INPUT

3

OUTPUT

2

ADJ

1

Q
VCC

CLR

CLK

471

3

R173 1kJ

R248 0J

GPIO0

R198

100J

DGND

23

R197

10kJ

1kJ

GPIO5

GND

PRE

GPIO4

D25

C196

10uF

C194

0.1uF

+

C193

2.2uF/35V(WT)

DV33 MVCC

MVCC

GPIO0

UDZS5.6B

R269

1.0kF

R270

4.7kJ x5

DGND

3.0kF

DGND

R200

R278

R201

DGND

CN5

R205

R202

DGND DGND

DGND

123456789

09FLZ-SM1-TB

FB9

FB8

BLM18AG121SN1

LD44

LD45

4.7kJ

R204

R203

47kJ

BLM18AG121SN1

FB10

LD46

R206

GPIO6

MENU

FB11

BLM18AG121SN1

LD47

R215

GPIO2

SELECT

A[8..15]

IC16

P89C51RD2

10uF/3216

C143

C

C

C

C

[SEL]

H:INPUT1 ( DVI Analog )

L:INPUT2 ( RGB )

H

ILLEGAL

ANALOG

EDID

ANALOG_SEL

L

AUTO

SELECT

(Reset)

DIGITAL

EDID

H

L

DIGITAL_SEL

3216

MVCC

A[0..7]

D[0..7]

2010

MVCC

A8

A15

A14

A12A9A9

A10

A11

A13

24252627282930

31

32

33

ALE

PSEN

P2.0/A8

P2.1/A9

P2.2/A10

P2.3/A11

P2.4/A12

P2.5/A13

P2.6/A14

P2.7/A15

PLCC44

P1.7/EX4

P1.6/EX3

P1.0/T2

P1.1/T2EX

P1.2/ECI

P1.3/EX0

P1.4/EX1

P1.5/EX2

P3.6/WR

P3.7/RD

RST

9823456

7

WRL

RDN

LD40

MRESET

LD67

R157

1kJ

MVCC

Q6

DTC143EE

23

R156

1kJ

MVCC

5

VCC

0.1uF
M/R

SUB

GND VOUT

IC17

PST598I

1234

M/R

C

C

C

C

EA/VPP

R266

1kJR161

Q17

DTC143EE

23

MVCC

R163

R162

R160

EMPTY x 6

R159

R158

16

MVCC

IC20

C188

0.1uF

D4A4

D5

D7D7D3

D6

D0

D1

D2

13141517181920

21

DQ0

DQ1

DQ2

DQ3

DQ4

DQ5

DQ6

DQ7

VCCVSS

272623

A8

Q8

44

AD0/P0.0

VSS

MVCC

VCC

N.C.

A10

25428

A11

OC

EA/VPP

35

N.C.

24MHz

A11

A12

A13

A14

A15

3

29

A14

A15

A13

A12

IC18

SN74ABT573ANS

EA/VPP

L : External ROM

H : Internal ROM

EA/VPP

N.C.

N.C.

C146

10pF

C145

10pF

2

A16

MVCC

A16

A17

30

A17

DGND

R249 EMPTY

DGND DGND

53

A0A1A2A3A4A5A6A7A8A9A10

98765

121110

A7

A5D5

A4

A1

A2

A3

A0D0A6

A1

A2

A5

A6

A7

19181716151413

12

Q1Q2Q3Q4Q5Q6Q7

VCCGND

D1D2D3D4D5D6D7D8C

2345678

9111

D2

D6

D4D7D3

D1

D4 A3

D6

D1

D3

D0A0D2

D5

43424140393837

36

AD1/P0.1

AD2/P0.2

AD3/P0.3

AD4/P0.4

AD5/P0.5

AD6/P0.6

AD7/P0.7

P3.0/RxD

P3.1/TxD

P3.2/INT0

P3.3/INT1

P3.4/T0

P3.5/T1

XTAL1

XTAL2

111314151617181910

2120221122334

MAINPW_IN

X2

RXD

TXD

1

DGND

DGND

C144

EMPTY

DGND

1

DGND

STANBY

MUTE

15123456

QA

QB
VCC

SER

11

14

GPIO5

GPIO4

WE

222431

WRL

R165 0J

4

1

2

A15

R250 47kJ

R251 47kJ

DVCC

R167

R166 33J

QC

SCK

HFS3

12

GPIO0

1

DVCC

IC29

R169

R168 33J

DIGITAL_SEL 2

SEL 1

QE

QD

RCK

A18CEOE

HCLK3

D

D

D

D

HREF1 1

HREF2 1

ADO_VR

R151

1kJ

R147

LD31

LD30

LD28

R143 100J

R140 1kJ

R139 1kJ

123

45

A0A1A2

GNDSDA

SCLKWPVCC

IC13

BR24C16FV

678

DGND DGND

R142

10kJ

R141

10kJ

SCL

SDA

123

4

CN4

EMPTY(B4B-PH-SM3-TB)

DVCC

LD29

DGND

TXD

RXD

12345

CN3

B5B-PH-SM3-TB

ADO_VR

STANBY

MUTE

DGND

D

D

D

D

AVCC

AVCC

AVCC

AVCC

FB7

BLM18PG600SN1

MVCC

C135

5V

MVCC

R146

R145

R144

IC15

EMPTY

EMPTY

R150

EMPTY

R149

EMPTY

R148

45

M62334FP

10uF/3216

1kJ

1kJ

47kJ

AO4GND

AO3

SDA

678

0J

R152 0J

C140

C139

C138

C137

C136

AGND

AGND

AGND

AGND

123

AO2

SCL

R153

0.1uF

0.1uF

0.1uF

0.1uF

10uF/3216

AO1

VCC

C141

0.1uF

R267 0J

DGND

MVCC

)

+

C192

EMPTY(47uF/16V(WT)

DGND

LD66

/RESET

0J

R154

C142

MVCC

MVCC

BLM18AG121SN1

FB12

LD48

R216

GPIO3

KEY_+

FB13

BLM18AG121SN1

LD49

GPIO7

KEY_-

C28

BLM18AG121SN1

FB14

LD50

R218

R217

GPIO1

INPUT

R259

47kJ

16

IC14

0.1uF

FB15

BLM18AG121SN1

FB16

BLM18AG121SN1

BLM18AG121SN1

LD51

R219

100J x6

Q18

MAINPW_IN

A

R256

3.9kJ

S_PORT 1

XMAIN_OUT 7

XGRESET 3

LD32

LD34

LD33

67910111213

IO0

IO1

IO2

VCC

RESET

SCL

SDA

1

2

SDA

SCL

R260

/RESET

DGND

D15

UDZS5.6B

23

DTC143EE

A A

A A

A A

A

M/R

LD36

LD35

IO3

47kJ

1

C152EMPTY X6

C150

C148

ADO_CTL 7

IO4

LD37

C191

DGND

C151

C149

C147

DGND

LCD_CTL 7

BKLT_EN 7

LD38

IO5

IO6

A2

0.01uF(B)

DGND

LD39

14

DGND

XLVDS_CTL 6

R257 2.2k F

21

21

21

21

DGND

R276

R275

R274

10kJ x 4

IO7

R273

GNDA0A1

PCA9557

834155

DGND

3

3

3

DGND

3

87654

87654

87654

87654

LL-T1815 CIRCUIT DIAGRAM

7 – 5

PC-UM10M

B

B

B

D

D

D

D

C

C

C

C

B

A

6/7

12345678

12345678

12345678

12345678

LD52

LCD12V

DV33

FB17

BLM18PG600SN1

C161

EMPTY

+

C160

10uF(3216)

C159

0.1uF

C158

0.1uF

C157

0.1uF

C156

0.1uF

C155

0.1uF

C154

0.1uF

C153

0.1uF

DGND

CN6

BM30B-SRDS-G-TF

C162

150uF/25V(WT)

VCC

VCC

GND

GND

VCC

GND

125

6

34789

C163

0.1uF

+

18

27

RN31 10J*4

SELLVDSNCGND

RBIN3+

RBIN3-

RBCLKIN+

RBCLKIN-

RBIN2+

RBIN2-

RBIN1+

101112131415161718

36

45

18

27

36

45

RN32 10J*4

RN33 10J*4

RAIN1+

RAIN2-

RAIN2+

RACLKIN-

RACLKIN+

RAIN3-

RAIN3+

RBN1-

RBIN0+

RBIN0-

19

18

27

36

18

27

45

36

45

RN34 10J*4

RAIN0-

RAIN0+

GND

RAIN1-

2928302726252423222120

R220

EMPTY

DV33

18

27

36

45

RN35 10J*4

R221

1kJ

DGND

21

21

21

21

3

3

3

3

R/F : Input Clock Triggering Edge Select

( H - Rising, L - Falling )

RS : LVDS swing range select

R225

4.7kJ

R224

4.7kJ

DEN3

DHS3

DVS3

( H - Normal, L - Reduced )

R227

EMPTY

R226

EMPTY

DV33 DV33

DCLK3

R229

R228

ON : L

EMPTY

EMPTY

OFF :

H

DGND

R230

EMPTY

1

Q9

EMPTY(DTC143EE)

23

XLVDS_CTL5

DGND

A A

A A

A A

A

R246

0J

ON : H

OFF : L

87654

87654

87654

87654

26272829303132333435363738394041424344454647484950

TB1-

TA1-

TC1-

TB1+

TA1+

IC23

THC63LVD823

R10

51

RA6
RA7
RA0
RA1

RA2
RA3
RA4
RA5
GA6
GA7
GA0
GA1
GA2
GA3
GA4
GA5
BA6
BA7

BA0
BA1
BA2

RA[7..0]3

GA[7..0]3

BA[7..0]3

D

D

D

D

R11

52

R12

53

R13

54

VCC

55

GND

56

R14

57

R15

58

R16

59

R17

60

G10

61

G11

62

G12

63

G13

64

G14

65

G15

66

G16

67

G17

68

B10

69

B11

70

VCC

71

GND

72

B12

73

B13

74

B14

75

TC1+

LVDS VCC

LVDS GND

B15

B16

B17

R20

R21

R22

R23

7677787980818283848586878889909192939495969798

RB7

RB0

BA4

RB2

RB6

BA3

RB1

BA5

RB[7..0]3

TB2-

TA2-

TD1-

TA2+

TD1+

TCLK1-

TCLK1+

LVDS GND

THC63LVD823

R24

R25

R26

R27

VCC

GND

G20

G21

GB6

RB5

RB4

GB0

GB7

RB3

GB[7..0]3

C

C

C

C

TB2+

LVDS VCC

G22

G23

GB1

GB2

TC2-

TD2-

TD2+

TC2+

TCLK2-

TCLK2+

G24

G25

G26

G27

BB6

GB5

GB3

GB4

B20

BB7

LVDS GND

B21

B22

99

100

BB1

BB0

PLL_GND

25

PLL_VCC

24

PLL_GND

23

TEST5

22

TEST4

21

TEST3

20

XPDWN

19

6/8

18

OE

17

MODE0

16

MODE1

15

TEST2

14

TEST1

13

RS

12

R/F

11

CLKIN

10

DE

9

VSYNC

8

HSYNC

7

B27

6

B26

5

GND

4

VCC

3

B25

2

B24

1

B23

R223

4.7kJ

R222

4.7kJ

BB5
BB4

BB3
BB2

BB[7..0]3

B

B

B

B

LL-T1820-H/B CIRCUIT DIAGRAM

7 – 6

PC-UM10M

B

B

B

D

D

D

D

C

C

C

C

B

A

7/7

12345678

12345678

12345678

12345678

LCD12V

3

D16 DAN202U

PTZ13B

D17

LD53

C164

47u/25V(WT)

F1

S1.8

R231

7.87kF

VOUTVIN

IC24

12

4531

GND

OADJ

ON/OFF

2

R232

C167

0.1uF

PQ20WZ11

C165

150uF/25V(WT)

ON : H

OFF : L

LCD_CTL5

2.2kF

PGND AGND DGND PWGND

C166

150uF/25V(WT)

H : ON

L : OFF

Z : OFF

PWGND

CN8

B7B-PH-SM3-TBT

LD54

1234567

LD55

LD56

BRTVR5

0V:MAX

FB21

PWGND

LD58

C169

+

BLM41PG600SN1

D18

C168

ON : H

OFF : L

BKLT_EN5

C170

0.1uF

2.2uF/35V(WT)

UDZS5.6B

0.1uF

DGNDDGND DGND DGND

LD59

AU12V

5V

LD62

DVCC

C171

47uF/16V(WT)

+

L6

CDRH73/10uH

LD61

678

DDD

SGS

GD

Q15

HAT1025R

123

45

LD63

AVCC

PTZ3.6B

C177

47uF/16V(WT)

+

DGND

L7

PTZ6.8B

D20

CDRH73/10uH

AGND

XMAIN_OUT

IC27

PQ1CZ21H2ZP

ON/OFF
OADJ
COM
VOUT
VIN

V12

DV25

C182

470uF/16V(UX)

L9

CDRH127/220uH

5
4
3
2
1

D24

C184

2200pF(B)

LD65

R243

1.0kF

R245

1.0kF

C183

+

0.1uF

D23

C185

+

SFPB76

PWGND

150uF/25V(WT)

C187

21

21

21

21

0.1uF

3

3

3

3

PWGND

V12

R238

18kJ

10kJ

ON : H

1

DGND

R237

10kJ

R239

1

Q13

DTC143EE

23

OFF : L

ADO_CTL5

IC25

PQ1CZ21H2ZP

4.7kJ

Q14

DTC143EE

23

ON : L

OFF : H

XMAIN_OUT5

ON/OFF
OADJ
COM
VOUT
VIN

C

C

C

C

PWGND

AU12V_I

R235

18kJ

R236

Q12

DTC143EE

23

MVCC

LD57

678

DDD

SGS

GD

Q11

HAT1025R

123

45

V12_I

AU12V_I

FB20

FB18

BLM41PG600SN1

123456789

CN7

B12B-PH-SM3-TBT

D

D

D

D

FB19

BLM41PG600SN1

BLM41PG600SN1

101112

FB22

BLM41PG600SN1

1

DGND

V12_I

5
4
3
2
1

C172

470uF/16V(UX) LD60

L5

CDRH127/220uH

DGND

C174

2200pF(B)

R240

3.0kF

R241

1.0kF

PTZ3.6B

C173

0.1uF

+

SFPB76

C176

150uF/25V(WT)

EMPTY

R271

PWGND

0.1uF

PWGND

0J

EMPTY

B

B

B

B

H : ON

L : OFF

Z : OFF

R272

IC26

PQ1CZ21H2ZP

ON/OFF
OADJ
COM
VOUT
VIN

V12

D19

C175

+

R261

DV33

LD64

C178

470uF/16V(UX)

L8

CDRH127/220uH

5
4
3
2
1

+

+

D22

C180

2200pF(B)

R242

3.6kF

C179

0.1uF

D21

C181

150uF/25V(WT)

SFPB76

R244

PWGND

2.2kF

C186

0.1uF

PWGND

87654

87654

87654

87654

A A

A A

A A

A

LL-T1815 CIRCUIT DIAGRAM

7 – 7

PC-UM10M

CHAPTER 8. PARTS LAYOUT

POWER BOARD

LL-T1815 PARTS LA YOUT

8 – 1

MAIN BOARD(A side)

PC-UM10M

LL-T1820-H/B PAR T S LAYOUT

8 – 2

PC-UM10M

MAIN BOARD(B side)

LL-T1815 PARTS LA YOUT

8 – 3

q

COPYRIGHT

No part of this publication may be reproduced,

electronic, mechanical, photocopying, recording, or otherwise,

without prior written permission of the publisher.



2002 BY SHARP CORPORATION

All rights reserved.

Printed in Japan.

stored in a retrieval system, or transmitted.

In any form or by any means,

SHARP CORPORATION
Digital Document Systems Group
Products Quality Assurance Department
Yamatokoriyama, Nara 639-1186, Japan

2002 October Printed in Japan t