Dell 1907FPc User manual

Dell 1907FPc
1
19” LCD MONITOR
DELL 1907FPc
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.
Service Manual
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Dell 1907FPc
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Table of contents
Table of contents------------------------------------------------------------------------------------------------------------------------- 02
Revision List -------------------------------------------------------------------------------------------------------------------------------03
ECN History-------------------------------------------------------------------------------------------------------------------------------- 04
Important Safety Notice --------------------------------------------------------------------------------------------------------------- 05
1. Monitor Specifications -----------------------------------------------------------------------------------------------------------06
2. LCD Monitor Description ------------------------------------------------------------------------------------------------------- 07
3. Operation instructions --------------------------------------------------------------------------------------------------------------08
3.1 General Instructions ----------------------------------------------------------------------------------------------------08
3.2 Control buttons -------------------------------------------------------------------------------------------------------------08
3.3 Adjusting the Picture ---------------------------------------------------------------------------------------12
3.4 Connect Your Monitor ----------------------------------------------------------------------------------------------------------19
4. Input/Output Specification ---------------------------------------------------------------------------------------------------20
4.1 Input Signal Connector ----------------------------------------------------------------------------------------------------20
4.2 Factory Preset Display Modes ----------------------------------------------------------------------------------------- 21
4.3 Power Supply Requirements ---------------------------------------------------------------------------------------- 21
4.4 Panel Specification ---------------------------------------------------------------------------------------------------------- 22
5. Block Diagram ---------------------------------------------------------------------------------------------------------------------25
5.1 Monitor Exploded View ----------------------------------------------------------------------------------------------------25
5.2 Software Flow Chart ---------------------------------------------------------------------------------------------------------27
5.3 Electrical Block Diagram --------------------------------------------------------------------------------------------------29
6. Schematic Diagram -------------------------------------------------------------------------------------------------------------31
6.1 Main Board --------------------------------------------------------------------------------------------------------------------31
6.2 Power Board -------------------------------------------------------------------------------------------------------------------36
6.3 USB Board ------------------------------------------------------------------------------------------------------------------------38
7. Layout --------------------------------------------------------------------------------------------------------------------------- 40
7.1 Main Board --------------------------------------------------------------------------------------------------------------------- 40
7.2 Power Board ------------------------------------------------------------------------------------------------------------------- 41
7.3 USB Board ---------------------------------------------------------------------------------------------------------------------- 43
7.4 Key Board ---------------------------------------------------------------------------------------------------------------------- 43
8. Mechanical Instruction --------------------------------------------------------------------------------------------------------- 44
9. Maintainability -------------------------------------------------------------------------------------------------------------------- 53
9.1 Equipments and Tools Requirement -------------------------------------------------------------------------------- 53
9.2 Trouble Shooting ----------------------------------------------------------------------------------------------------------- 54
10. White Balance Adjustment --------------------------------------------------------------------------------------------------- 60
11. EDID Content -------------------------------------------------------------------------------------------------------------------- 62
12. ISP Instruction -------------------------------------------------------------------------------------------------------------- 63
13. Check List -------------------------------------------------------------------------------------------------------------------------69
14. BOM List ------------------------------------------------------------------------------------------------------------------------------ 72
15. Definition Of Pixel Defects------------------------------------------------------------------------------------------------------105
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Dell 1907FPc
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Revision List
Revision Release Date Revise history TPV model Remark
A00 Nov.-28-2005 Initial Release
T980KSCDKRDFUP
ROHS BOM
T980KSCDKRDMUP
T980KGCHKRDGUP
T980KGCHKRDEUP
A01 Dec.22-2005
Sold area in EU and attach the
corresponding BOM T980KSCHBRDGQP
A02 Mar.-28-2006
Add “Definition Of Pixel Defects”
A03 April-25-2006
Add” Max Brightness measurement ” on
Page60
A04 Mar.-30-2007 Update Mechanical Instruction in item 8
A05 Nov.-30-2007
Add “ECN History”
A06 Dec.-20--2007
Add the CBPC,PWPC Version
information in BOM list
Dec.-20--2007
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Dell 1907FPc
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ECN History
ECN No. Change Description Service Deposition Cut-in date MSR
ECN-D-EE105 Enhance the button
structure
Rework on VFF and customer
complain power button defect;
Purge service center parts
inventory.
New Part Number: 33G4940
Old Part Number: 33G0120
Dec-24-2006 A00
ECR027569 -- Firmware update from
V4C08 to V4C09
-- PPID change from
A00 to A01
Upgrade the Vista firmware
on verified failure;
2007/2/1 A01
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Important 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 TRANSFORMER FOR THIS UNIT WHEN SERVICING
REFER TO BACK COVER FOR IMPORTANT SAFETY GUIDELINGS
Proper service and repair is important to the safe, reliable operation of all Dell Company** Equipment. The service
procedures recommended by Dell 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. Dell 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, Dell has not
undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not
recommended by Dell 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, Dell Company will be referred to as Dell.
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 Dell. Dell
assumes no liability, express or implied, arising out of any unauthorized modification of design. Servicer assumes
all liability.
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.)
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.
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1. Monitor Specifications
LCD Panel
Screen type Active matrix - TFT LCD
Panel Type LTM190EX-L01 (LPL)
LM190E03-TLB4 (SEC)
Size 480mm(19.0")
Display Area 376.32(H) x 301.056(V)
Pixel pitch 0.294mm(H) x 0.294mm(V)
Viewable angle (CR>=10)
150(H) / 135(V) (type) (For LTM190EX-L01 panel)
140(H) / 140(V) (type) (For LM190E03-TLB4 panel)
Response time 8ms(type)
Input
Video R, G, B Analog Interface
Separate Sync H/V TTL
H-Frequency 30kHz – 81kHz
V-Frequency 56 - 76Hz
Display Colors 16.7M Colors
Dot Clock 165MHz (Max)
Optimal preset resolution 1280 x 1024 at 60 Hz
Highest preset resolution 1280 x 1024 at 75 Hz
Plug & Play VESA DDC
EPA ENERGY
STAR®
ON Mode (with Dell
Sound bar and USB
active)
<65W
OFF Mode <3W
Connector Type 15-pin D-subminiature, blue connector; DVI-D, white connector
Input Video Signal Analog RGB, 0.7 Volts +/-5%, positive polarity at 75 ohm input
impedance
Power Source 100 V ~ 240 V± 10 %VAC, 50 ±3Hz, 60 ±3Hz
Environmental
Considerations
Temperature:
Operating: 5° to 35°C (41° to 95°F)
Non-operating: Storage: -20° to 60°C (-4° to 140°F); Shipping:
-20° to 60°C (-4° to 140°F)
Humidity: Operating: 10% to 80%
Non-operating: Storage: 5% to 90%; Shipping: 5% to 90%
Altitude:
Operating: 3,657.6m (12,000 ft) max
Non*operating: 12,192 m (40,000 ft) max
Weight
Weight with packaging: 8.6 kg (18.96 lbs)
Weight with stand assembly and cables: 7.1 kg (15.6 lbs)
Weight without stand assembly: 5.0 kg (11.02 lbs)
Weight of stand assembly: 1.6 kg (3.53 lbs)
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2. LCD Monitor Description
The LCD monitor will contain a main board, Power board, key board, and USB 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
Power board
(
Include: Inverter and ada
p
ter
)
Flat Panel and
CCFL backlight
Main Board
Keyboard
RS232 Connector
For white balance
adjustment in factory
mode
CCFL Drive.
AC-IN
100~240V HOST Computer
USB board
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Dell
1907FPc
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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 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
1. Input select
2. OSD menu / select button
3. Down button
4. Up button
5. Power button (with power light indicator)
Using the front panel
Use the buttons on the front of the monitor to adjust the image settings.
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Dell 1907FPc
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Input select
Use the Input Select button to select between two different video signals that may be
connected to your monitor.
NOTE: The floating 'Dell Self-test Feature Check' dialog appears on a black
background If the monitor cannot sense a video signal. Depending upon the
selected input, one of the dialogs shown below will scroll continually.
OSD menu /
select
The Menu button is used to open and exit the on-screen display (OSD), and exit from
menus and sub-menus.
Down (-) and
Up (+)
Use these buttons to adjust (decrease/increase ranges) items in the OSD menu.
Power Button
and Indicator
Use the power button to turn the monitor on and off.
The green light indicates the monitor is on, and fully functional. An amber light indicates
power save mode.
Back View
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1 VESA mounting holes (100mm)
(Behind attached base plate) Use to mount the monitor.
2 Barcode serial number label Refer to this label if you need to contact Dell for technical support.
3 Security lock slot Use a security lock with the slot to help secure your monitor.
4 Dell Soundbar mounting brackets Attach the optional Dell Soundbar.
5 Regulatory rating label List the regulatory approvals.
6 Stand removal button Press to release the stand
7 Cable holder Help organize cables by placing them in the holder.
8 Lock down/release button Push the monitor down, press the button to unlock the monitor,
and then lift the monitor to the desired height.
Bottom View
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