HP Vp17 User manual

17" LCD Color Monitor HPVP17
1
Service
Service
Service
HorizontalFrequency
24-83kHz
TABLE OF CONTENTS
Description Page Description Page
SAFETY NOTICE
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC
EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING
Table Of Contents.......……..............................…........1
Revision List.…........................................……......2
1. Monitor Specification..............................………........4
2. LCD Monitor Description…………………………….......5
3. Operation Instruction…………...............……...........6
3.1. General Instructions...........................…...........6
3.2. Control Button…………….…..............……...............6
3.3 Adjusting the Picture...........................…............7
4. Input/Output Specification............……………............10
4.1. Input Signal Connector............………….................10
4.2. Factory Preset Display Modes......…..................11
4.3. Power Supply Requirements...............................11
5. Panel Specification.....………………..................12
5.1. General Feature…….....………………..................12
5.2. Optical Characteristics………………………………13
6. Block Diagram……...................…………................14
6.1 Software Flow Chart………………………………...14
6.2.Electrical Block Diagram……………..….......16
7. Schematic……………......................................18
7.1 Main Board....……………......................................18
7.2 Power Board.….…………......................................22
7.3 Key Board.….…………..…....................................25
8.PCB Layout..…….......................................26
8.1. Main Board………................................................26
8.2. Power Board….....................................................28
8.3. Key Board……….......................….......................30
9. Maintainability……….......................................31
9.1. Equipments and Tools Requirement…….............31
9.2. Trouble Shooting…….........................................32
9.2.1 Main Board…………...........................................32
9.2.2 Power Board……………...…..............................34
9.2.3 Key Board…………............................................36
10 White-Balance, Luminance adjustment..................37
11.Mechanical Instructions……………..…...….......39
12. Monitor Exploded View………………..…....….......46
13. BOM List………………………………..……………47
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17" LCD Color Monitor HPVP17
2
Revision List
Version Date Revision History TPV Model Name
A00 Dec.-04-07 Initial release T77CMLMMH6HADN
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17" LCD Color Monitor HPVP17
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Important Safety Notice
Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service
procedures recommended by AOC and described in this service manual are effective methods of performing service
operations. Some of these service operations require the use of tools specially designed for the purpose. The special
tools should be used when and as recommended.
It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in
order to minimize the risk of personal injury to service personnel. The possibility exists that improper service methods
may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE NOT
EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all conceivable ways in which
service might be done or of the possible hazardous consequences of each way. Consequently, AOC has not
undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not
recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the
equipment will be jeopardized by the service method selected.
Hereafter throughout this manual, AOC Company will be referred to as AOC.
WARNING
Use of substitute replacement parts, which do not have the same, specified safety characteristics may create shock, fire,
or other hazards.
Under no circumstances should the original design be modified or altered without written permission from AOC. AOC
assumes no liability, express or implied, arising out of any unauthorized modification of design.
Servicer assumes all liability.
FOR PRODUCTS CONTAINING LASER:
DANGER-Invisible laser radiation when open AVOID DIRECT EXPOSURE TO BEAM.
CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may result in
hazardous radiation exposure.
CAUTION -The use of optical instruments with this product will increase eye hazard.
TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S
REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF
THIS SERVICE MANUAL.
Take care during handling the LCD module with backlight unit
-Must mount the module using mounting holes arranged in four corners.
-Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.
-Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to the
panel.
-Protect the module from the ESD as it may damage the electronic circuit (C-MOS).
-Make certain that treatment person’s body is grounded through wristband.
-Do not leave the module in high temperature and in areas of high humidity for a long time.
-Avoid contact with water as it may a short circuit within the module. -If the surface of panel becomes dirty, please wipe
it off with a soft material. (Cleaning with a dirty or rough cloth may damage the panel.)
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17" LCD Color Monitor HPVP17
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1. Monitor Specification
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17" LCD Color Monitor HPVP17
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2. LCD Monitor Description
The LCD Monitor will contain main board, power board and a key board which house the flat panel control logic,
brightnesscontrollogicandDDC.
The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each
voltage.
Video signal, DDC
Power Board
(
Include ada
p
ter board
)
Flat Panel and
CCFL backlight
Main Board RS232 Connector
For white balance
adjustment in
factory mode
HOST Computer
CCFT Drive.
AC-IN
110V-240V
Monitor Block Diagram
Keyboard
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17" LCD Color Monitor HPVP17
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3. Operation Instructions
3.1 General Instructions
Press the power button to turn the monitor on or off. The other control buttons are located at front of the panel. By
changing these settings, the picture can be adjusted to your personal performance.
-The power cord should be connected and insert to adaptor.
-Connect the video cable from the monitor to the computer VGA card.
-Press the power button to turn on the monitor, the power indicator will light up to Green.
3.2 Control Button
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17" LCD Color Monitor HPVP17
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3.3 Adjust the Picture
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17" LCD Color Monitor HPVP17
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17" LCD Color Monitor HPVP17
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4. Input/Output Specification
4.1 Input Signal Connector
Pin Signal Pin Signal
1 Red Video 9 3.3/+5 V (from PC)
2 Green Video 10 Sync Ground
3 Blue Video 11 None
4 None 12 DDC Data
5 Ground (DDC Return) 13 Horizontal Sync
6 Red GND 14 Vertical Sync
7 Green GND 15 DDC Clock
8 Blue GND
VGA connector layout
PIN 1 PIN 5
PIN 11
Pin Signal Pin Signal Pin Signal
1 TMDS Data 2 - 9 TMDS Data 1 - 17 TMDS Data 0 -
2 TMDS Data 2 + 10 TMDS Data 1 + 18 TMDS Data 0 +
3 TMDS Data 2 / 4 Shield 11 TMDS Data 1 / 3 Shield 19 TMDS Data 0 / 5 Shield
4 TMDS Data 4 - 12 TMDS Data 3 - 20 TMDS Data 5 -
5 TMDS Data 4 + 13 TMDS Data 3 + 21 TMDS Data 5 +
6 DDC Clock 14 +3.3/+5V Power (from PC) 22 TMDS Clock Shield
7 DDC Data 15 Ground (Return for +5V) 23 TMDS Clock +
8 No Connect 16 Hot Plug Detect (connect internally to pin-14) 24 TMDS Clock -
DVI-D digital connector layout
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4.2 Factory Preset Display Modes
4.3 Power Supply Requirements
Parameter Range
AC Input Voltage 90 to 265V
AC Input Frequency 45 to 63 Hz
Inrush Current 50A MAX AT 220VAC and 30A AT 120VAC
Leakage Current 5 mA MAX at 120VAC
Power Consumption ≤37W
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17" LCD Color Monitor HPVP17
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5. Panel Specification
5.1GeneralFeature
CLAA170EA07P is 17.0” color TFT-LCD (Thin Film Transistor Liquid Crystal Display) module composed of LCD panel,
driver ICs, control circuit and backlight. By applying 8 bit digital data, 1280×1024, 16.2M-color images are displayed on
the 17.0” diagonal screen. Input power voltage is 5.0V for LCD driving. Inverter for backlight is not included in this
module. General specification are summarized in the following table:
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17" LCD Color Monitor HPVP17
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5.2 Optical Characteristics
Ta=25℃，VCC=5.0V
5.3 Electrical Characteristics
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17" LCD Color Monitor HPVP17
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6. Block Diagram
6. 1 Software Flow Chart
1
2
N
Y
5
Y
N
10
Y
N
12
Y
N
7
Y
N
6
4
3
8
9
14
11
13
Y
N
15
Y
N
16
17
19
Y
N
18
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REMARK:
1) MCU initialize.
2) Is the EEprom blank?
3) Program the EEprom by default values.
4) Get the PWM value of brightness from EEprom.
5) Is the power key pressed?
6) Clear all global flags.
7) Are the AUTO and SELECT keys pressed?
8) Enter factory mode.
9) Save the power key status into EEprom.
Turn on the LED and set it to green color.
Scalar initialize.
10) In standby mode?
11) Update the lifetime of back light.
12) Check the analog port, are they’re any signals coming?
13) Does the scalar send out an interrupt request?
14) Wake up the scalar.
15) Are there any signals coming from analog port?
16) Display "No connection Check Signal Cable" message. And go into standby mode after the message
disappear.
17) Program the scalar to be able to show the coming mode.
18) Process the OSD display.
19) Read the keyboard. Is the power key pressed?
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17" LCD Color Monitor HPVP17
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6.2 Electrical Block Diagram
6.2.1 Main Board
LCD Interface
Scalar TSUM56AWHL
(Include: MCU, ADC, OSD etc)
OSD Control
Interface (Keypad)
D-SUB
Connector
EEPROM
24C02
Crystal
14.318MHZ
EEPROM
PM25LV010-25
DVI-SIGNAL
Connector
EEPROM
24C02
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6.2.2 Inverter / Power Board
CN902
DIM
EMI filter Bridge
Rectifier
and Filter
Start Circuit
PWM
Control IC
Transformer Rectifier
diodes
AC input
12V
ON/OFF
Control
PWM
Control IC
Feedback
Circuit
LC
Resonance
Transformer MOSFET
Over
Voltage
Lamp
ON/OFF
Feedback
Circuit
Over
Voltage
Protect
5V
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7. Schematic
7.1 Main Board
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