Akhter TFT1560PSA+ User manual

Akhter TFT1560PSA+
SERVICE MANUAL
15” LCD MONITOR
TFT1560PSA+
THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY.EVERY REASONABLE EFFORT
HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE
ACCURACY OFTHIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY
FOR CHANGES, ERRORS OR OMISSIONS.

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Table of Contents
Table of Contents ------------------------------------------------------------------------------------------------------------------------ 02
Revision List -----------------------------------------------------------------------------------------------------------------------------03
1. Monitor Specification --------------------------------------------------------------------------------------------------------------04
2. LCD Monitor Description ----------------------------------------------------------------------------------------------------------05
3. Operation Instructions -------------------------------------------------------------------------------------------------------------06
3.1 General Instructions ----------------------------------------------------------------------------------------------------------06
3.2 Control Button----------------------------------------------------------------------------------------------------------------------06
3.3 Adjusting The Picture ----------------------------------------------------------------------------------------------------------08
4. Input/Output Specification ----------------------------------------------------------------------------------------------------------10
4.1 Input Signal Connector --------------------------------------------------------------------------------------------------------10
4.2 Factory Preset Display Modes -------------------------------------------------------------------------------------------------10
4.3 Power Supply Requirement----------------------------------------------------------------------------------------------------11
4.4 Panel Specification ------------------------------------------------------------------------------------------------------------12
5. Block Diagram ---------------------------------------------------------------------------------------------------------------------- 15
5.1 Monitor Exploded View-----------------------------------------------------------------------------------------------------------15
5.2 Software Flow Chart ----------------------------------------------------------------------------------------------------------16
5.3 Electrical Block Diagram ---------------------------------------------------------------------------------------------------------19
6. Schematic Diagram -------------------------------------------------------------------------------------------------------------------23
6.1 Main Board ----------------------------------------------------------------------------------------------------------------------23
6.2 Power/ Inverter Board ---------------------------------------------------------------------------------------------------------34
7. PCB Layout --------------------------------------------------------------------------------------------------------------------------- 38
7.1 Main Board -----------------------------------------------------------------------------------------------------------------------38
7.2 Power/ Inverter Board ----------------------------------------------------------------------------------------------------41
8. Maintainability --------------------------------------------------------------------------------------------------------------------------43
8.1 Equipments and Tools Requirements ------------------------------------------------------------------------------------43
8.2 Troubleshooting ------------------------------------------------------------------------------------------------------------------- 44
9. White-Balance, Luminance Adjustment -------------------------------------------------------------------------------------55
10. BOM List --------------------------------------------------------------------------------------------------------------------------------56

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Revision List
Version Date Revision History TPV Model
A00 May-17-2006 Initial release T562KCDHBEAHA
T562KSXHBEAHA

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1. Monitor Specifications
Driving system TFT Color LCD
Size 38.0cm(15.0")
LCD Panel
Pixel pitch 0.297mm(H) x 0.297mm(V)
Video R, G, B Analog Interface
Separate Sync. H/V TTL
H-Frequency 30kHz – 60kHz
Input
V-Frequency 55-75Hz
Display Colors 16.7M Colors
Dot Clock 80MHz
Max. Resolution 1024 x 768
Plug & Play VESA DDC2BTM
ON Mode ≤30W (For 2 CCFL)
EPA ENERGY STAR®
OFF Mode ≤2W
Audio output Rated Power 2.0W rms (Per channel)
Input Connector D-Sub 15pin
Input Video Signal Analog:0. 7Vp-p(standard),
75 OHM, Positive
Maximum Screen Size Horizontal : 304.1mm
Vertical: 228.1mm
Power Source 100~240VAC,50~60Hz
Environmental
Considerations
Operating Temp: 5° to 35°C
Storage Temp: -20° to 60°C
Operating Humidity: 10% to 85%

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2. LCD Monitor Description
The LCD MONITOR will contain a main board, a PWPC board, an audio board and a keypad board which house the
flat panel control logic, brightness control logic and DDC.
The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each
voltage.
Monitor Block Diagram
Video signal, DDC
PWPC Board
(
Include: ada
p
ter, inverter
)
Flat Panel and
CCFL backlight
Main Board
Keyboard
RS232 Connector
For white balance
adjustment in factory
mode
Host Computer
CCFL Drive.
AC-IN
100V-240V
Audio board

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3. Operating Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the
monitor. By changing these settings, the picture can be adjusted to your personal preferences.
- The power cord should be connected.
- Connect the video cable from the monitor to the video card.
- Press the power button to turn on the monitor, the power indicator will light up.
3.2 Control Buttons
3.2.1 Key Control
1 2 3 4 5
External Control Button
No Description No Description
1. Auto Adjust button / Exit 2. Volume /
3. Volume / 4. Menu / Enter
5. Power Button /LED

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3.2.2 Front Panel Control
•Power Button /Power Indicator:
Press this button to switch ON/OFF of monitor’s power.
Green — Power On mode.
Orange — Off mode.
•Menu / Enter:
Active OSD menu or function adjust confirm or Exit OSD menu when in volume OSD status.
•Volume / :
Increase volume or adjust function.
•Volume / :
Decrease volume or adjust function.
•Auto Adjust button / Exit:
1. When OSD menu is in active status, this button will act as EXIT-KEY (EXIT OSD menu).
2. When OSD menu is in off status, press this button to activate the Auto Adjustment function.
The Auto Adjustment function is used to optimize the HPos, VPos, Clock and Focus.
OSD Lock Function: To lock the OSD, press and hold the MENU button while the monitor is off and then press power
button to turn the monitor on. To un-lock the OSD - press and hold the MENU button while the monitor is off and then
press power button to turn the monitor on.

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3.3 Adjusting The Picture
1. Press the MENU-button to activate the OSD window.
2. Press or to navigate through the functions. Once the desired function is highlighted, press the MENU-button
to activate it. If the function selected has a sub-menu, press or again to navigate through the sub-menu
functions. Once the desired function is highlighted, press MENU-button to activate it.
3. Press or to change the settings of the selected function.
4. To exit and save, select the exit function. If you want to adjust any other function, repeat steps 2-3.
The OSD Message
OSD Table:
Main Menu Item Main Menu Icon Sub Menu Item Sub Menu Icon Description
Contrast
Contrast from Digital-register.
Luminance
Brightness
Backlight Adjustment
Focus
A
djust Picture Phase to reduce
Horizontal-Line noise
Image Setup
Clock
A
djust picture Clock to reduce
Vertical-Line noise.
H. Position
A
djust the horizontal position of
the picture.
Image Position
V. Position
Adjust the vertical position of the
picture.
Warm N/A Recall Warm Color Temperature
from EEPROM.
Cool N/A Recall Cool Color Temperature
from EEPROM.
User / Red
Red Gain from Digital-register.
Color Temp.
User / Green
Green Gain Digital-register.

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User / Blue
Blue Gain from Digital-register.
Yes N/A
A
uto Adjust the H/V Position,
Focus and Clock of picture.
Auto Config
No N/A Do not execute Auto Config,
return to main menu.
H. Position
A
djust the horizontal position of
the OSD.
V. Position
Adjust the vertical position of the
OSD.
OSD Setup
OSD Timeout
Adjust the OSD timeout.
Language
Language N/A Set OSD language
Information
Information N/A Show the resolution, H/V
frequency and input port of
current input timing.
Yes N/A Clear each old status of
Auto-configuration and set the
color temperature to Cool.
Reset
No N/A Do not execute reset, return to
main menu.
Exit
N/A N/A Exit OSD

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4. Input/Output Specification
4.1 Input Signal Connector
Pin No. Description Pin No. Description
1. Red 9. +5V
2. Green 10. VGA-CON
3. Blue 11. RXD
4. TXD 12. DDC-Serial Data
5. Ground 13. H-Sync
6. R-Ground 14. V-Sync
7. G-Ground 15. DDC-Serial Clock
8. B-Ground
VGA Connector layout
15
610
11 15
4.2 Factory Preset Display Modes
Mode Resolution Horizontal Frequency (kHz) Vertical Frequency (Hz)
720 x 400 31.47 70.0
640 × 480 31.47 60.0
640 × 480 35.00 66.6
640 × 480 37.50 75.0
VGA
640 × 480 37.861 72.8
800 × 600 35.156 56.3
800 × 600 37.879 60.0
800 × 600 48.077 72.2
800 × 600 46.875 75.0
SVGA
832 x 624 49.725 75.0
1024 × 768 48.363 60.0
1024 × 768 56.476 70.0
1024 x 768 60.24 74.9
XGA
1024 × 768 60.02 75.0