Philips 190B5CG/00 User manual

Horizontal frequencies
30 - 82KHz
Service
Service
Service
TABLE OF CONTENTS
Published by BCU Monitors Printed in Suzhou Copyright reserved Subject to modification M Apr. 14 2004
Description Page
Important Safety Notice ---------------------------- 2
Technical Data --------------------------------------3~4
Installations-----------------------------------------5~6
On-screen Display(OSD)---------------------------7~8
OSD Aging Mode & Lock/unlock----------------------9
Pixel Defect Policy------------------------------------10
Warning Message-------------------------------------11
Factory Mode------------------------------------------12
Satety Test Requirements----------------------------13
Electrical & Mechanical Instructions-----------14~17
DDC Instructions & HEX Data------------------21~29
ISP Instruction ----------------------------------18~20
Description Page
Block Diagram---------------------------------------30
Control Diagram & C.B.A.----------------------------37
Audio Diagram & C.B.A -------------------------38~40
Wiring Diagram --------------------------------------41
Power Diagram & C.B.A.------------------------42~45
Exploded View
Recommended parts list ----------------------------47
Spare
Scaler Diagram & C.B.A-------------------------31~36
--------------------------------------- 46
parts list ----------------------------------48~49
Different parts list -----------------------------------50
General product specification------------------51~77
Troubling shooting & Repair flow chart-------78~82
SH 4 190B5
REFER TO BACK COVER FOR IMPORTANT SAFETY GUIDELINES
CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING.
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.
SAFETY NOTICE
GB 3138 106 10372
19" TFT LCD Colour Monitor
«
190B5CG/00
190B5CB/00
190B5CB/27
190B5CS/00
190B5CS/27

2
Proper service and repair is important to the safe, reliable
operation of all Philips Consumer Electronics Company**
Equipment. The service procedures recommended by
Philips and described in this service manual are effective
methodsofperformingserviceoperations.Someofthese
service operations require the use of tools specially designed
forthepurpose.Thespecialtoolsshouldbeusedwhenand
as recommended.
Itisimportanttonotethatthismanualcontainsvarious
CAUTIONSandNOTICESwhichshouldbecarefullyreadin
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. Philips could not possibly know, evaluate and
advisetheservicetradeofallconceivablewaysinwhich
service might be done or of the possible hazardous
consequences of each way. Consequently, Philips has not
undertaken any such broad evaluation. Accordingly, a
servicer who uses a service procedure or tool which is not
recommended by Philips must first satisfy himself thoroughly
thatneitherhissafetynorthesafeoperationofthe
equipment will be jeopardized by the service method
selected.
* * Hereafter throughout this manual, Philips Consumer
Electronics Company will be referred to as Philips.
Critical components having special safety characteristics are
identifiedwitha bytheRef.No.inthepartslistand
enclosed within a broken line*
(where several critical components are grouped in one area)
along with the safety symbol on the schematics or
exploded views.
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 Philips.
Philips assumes no liability, express or implied, arising out of
any unauthorized modification of design.
Servicer assumes all liability.
WARNING
*BrokenLine
FOR PRODUCTS CONTAINING LASER :
Invisible laser radiation when open.
AVOID DIRECT EXPOSURE TO BEAM.
Use of controls or adjustments or
performance of procedures other than
those specified herein may result in
hazardous radiation exposure.
The use of optical instruments with this
product will increase eye hazard.
DANGER-
CAUTION-
CAUTION-
TO ENSURE THE CONTINUED RELIABILITY OF THIS
PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S REPLACEMENT
PARTS, WHICH ARE LISTED WITH THEIR
PARTNUMBERSINTHEPARTSLISTSECTIONOFTHISSERVICE
MANUAL.
Take care during handling the LCD module with backlight unit
- Must mount the module using mounting holes arranged in four
corners.
-Donotpressonthepanel,edgeoftheframestronglyorelectric
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 are grounded through
wrist band.
-Donotleavethemoduleinhightemperatureandinareasofhigh
humidityforalongtime.
-Avoidcontactwithwaterasitmayashortcircuitwithinthe
module.
-Ifthesurfaceofpanelbecomedirty,pleasewipeitoffwithasoft
material. (Cleaning with a dirty or rough cloth may damage the
panel.)
Important Safety Notice
190B5 LCD
Go to cover page

3
190B5 LCD
Technical Data
Go to cover page
Technical Specifications
LCDPANEL
Type TFTLCD
Screen size19" / 48.26 cmdiagonal
Pixel Pitch 0.294 x 0.294 mm
LCDPanel type
1280 x 1024 pixels
R.G.B. vertical stripe
Anti-glarepolarizer, hard coated
Effectiveviewingarea 376.32 x 301.06 mm
DisplayColors 16M colors
SCANNING
Vertical refreshrate 56 Hz-76 Hz
Horizontal Frequency30k Hz-82 kHz
VIDEO
Videodotrate 135 MHz
Inputimpedance
-Video75 ohm
-Sync 2.2K ohm
Inputsignal levels0.7 Vpp
Sync inputsignal
Separate sync
Composite sync
Sync ongreen
Sync polaritiesPositiveandnegative
Videointerface Dual input:D-Sub (analog) andDVI-D(digital)
areavailable anduserselectable
Audio
Loudspeaker
4W StereoAudio(2W/channel RMSx2, 300
Hz-12kHz,16ohm, THD=10%, PMPO 32
Watts)
Headphone
connector 3.5mm mini jack
Inputsignal connector 3.5mm mini jack
Stand-alone audio
output
Audiooutputcanstill functionwheneverthere
isan audio source playing, even thereisno
videoinput.
Note: The volume adjustment can not function
under the following conditions:
1. A warning message appears on screen
2. No audio input
Optical characteristics
Contrastratio500:1 (typ.)
Brightness 250 cd/m2(typ.)
Peakcontrastangle 6o'clock
White Chromaticity
x: 0.283 y: 0.297 (at 9300oK)
x: 0.313 y: 0.329 (at 6500oK)
x: 0.313 y: 0.329 (at sRGB)
ViewingAngle
(C/R>10)
Upper>88o(typ.)
Lower>88o(typ.)
Left>88o(typ.)
Right >88o(typ.)
Responsetime<25 ms (typ.)
Physical Specifications
Dimension(WxHxD)* 425 x 377 x 235 mm (in lowest
position)
Weight 8.6 Kg
Tilt /Swivel -5o~30
o/ + - 135o
Height adjustment
rang40 mm
Power supply100 240 VAC, 50/60 Hz
Powerconsumption40 W* (typ.)
Temperature5oCto35
oC(operating)
-20oCto60
oC(storage)
Relativehumidity20% to80%
SystemMTBF 50K hours
Cabinet color
190B5CG: Light Gray
190B5CB: Black
190B5CS: Silver
Resolution&Preset Modes
Maximum 1280 x 1024 at 75 Hz
Recommended1280 x 1024 at 60 Hz
Pin Assignment
1. The digital onlyconnector contains
24 signal contactsorganizedin
three rows of eight contacts.
Signal pin assignmentsarelisted
in the followingtable:
Pin
No
.
Signal
Assignment
Pin
No.
Signal
Assignment
Pin
No
.
Signal
Assignment
1T.M.D.S. Data2- 9T.M.D.S. Data1- 17 T.M.D.S.
Data0-
2T.M.D.S. Data2+ 10 T.M.D.S. Data1+ 18 T.M.D.S.
Data0+
3T.M.D.S.
Data2/4 Shield11 T.M.D.S. Data1/3 Shield19 T.M.D.S. Data0/5 Shield
4No connect 12 No connect 20 No connect
5No connect 13 No connect 21 No connect
6DDCClock14 +5V Power22 T.M.D.S. Clock
Shield
7DDCData 15 HotPlug Detect 23 T.M.D.S.
Clock+
8No connect 16 Ground(for+5V) 24 T.M.D.S. Clock-

4190B5 LCD
Go to cover page
Technical Data
15 userdefinable modes
15 factory preset modes:
H. freq (kHz) ResolutionV. freq(Hz)
31.5 640*350 70
31.5 720*400 70
31.5 640*480 60
35.0 640*480 67
37.5 640*480 75
35.2 800*600 56
37.9 800*600 60
46.9 800*600 75
49.7 832*624 75
48.4 1024*768 60
60.0 1024*768 75
69.0 1152*870 75
71.8 1152*900 76
63.9 1280*1024 60
80.0 1280*1024 75
2. The 15-pin D-sub connector (male)ofthe signal cable:
Pin
No. Assignment Pin No. Assignment
1 Redvideoinput9+5V
2Green videoinput/SOG 10 Logic ground
3 Bluevideoinput11 Ground
4 Sense(GND)12 Serial data line (SDA)
5HotPlug Detect 13 H. Sync /H+V
6 Redvideoground14 V. Sync (VCLK for DDC)
7Green videoground15 Data clockline (SCL)
8 Bluevideoground
Automatic PowerSaving
If you haveVESA DPMS compliance displaycard or software
installedin your PC, the monitor can automaticallyreduce its
powerconsumptionwhen notinuse.Ifan inputfrom akeyboard,
mouseor otherinputdevice isdetected, the monitor will 'wakeup'
automatically. The followingtable shows the powerconsumption
andsignalingofthisautomatic powersavingfeature:
PowerManagement Definition
VESA
Mode
VideoH-sync V-sync
Power
Used
LED
color
ON ActiveYes Yes40 W
(typ.) Blue
OFF BlankedNo No <1W Amber
Thismonitor is ENERGY STAR Rcompliant.Asan ENERGY
STAR RPartner, PHILIPS hasdeterminedthat thisproduct
meetsthe ENERGY STAR Rguidelinesforenergy efficiency.

5
190B5 LCD
Installation
Go to cover page
UP and DOWN buttons are used when
adjusting the OSD of your monitor.
LEFT and RIGHT buttons, like the UP and
DOWN buttons, are also used in adjusting
the OSD of your monitor.
BRIGHTNESS hotkey. When the UP and
DOWN arrow buttons are pressed, the
adjustment controls for the BRIGHTNESS
will show up.
VOLUME
VOLUME hotkey. When the LEFT and
RIGHT arrow buttons are pressed, the
adjustment controls for VOLUME will show
up.
OK button which when pressed will take you
to the OSD controls.
POWER button switches your monitor on.
Automatically adjust the horizontal position,
vertical position, phase and clock setting.
Rear View
1 Kensington anti-thief lock
2 VGA input
3 Earphone jack
4DVI-Dinput
5 PC audio input
6 AC power input
UnfoldandFoldthe Base
Unfoldthe Base
1) Putmonitorface
downonthe safe
surface.
2) Pull up the base.
Foldthe Base
1) Pushdownthe
head
ofmonitor.
Remove the Base
1) Remove the
topcover.
2) Remove the 6
screwsandthen
remove the
basefromthe
LCD monitor.

6190B5 LCD
Go to cover page
Installation
Accessory Pack
Unpack all the parts.
Power cord VGA signal cableEDFU pack
PC audio cable
(lime)
Macadaptor
(optional)
Connectingto Your PC
1) Plug the cablesintoconnectors.
Ifyouusean AppleMacintosh, youneed to connectthe
special Macadapter to oneendofthe monitorsignal cable.
2) CableManagement
2) ConnecttoPC
(a)Turnoff your computer andunplug its power cable.
(b) Connectthe monitorsignal cableto the videoconnector
on the back ofyour computer.
(c) Plug the power cord ofyour computer andyour monitor
intoanearby outlet.

7
190B5 LCD
On-screen Display
Go to cover page
On-Screen Display
This is a feature in all Philips LCDmonitors.Itallowsanenduser to adjustscreen performance of themonitors directly through an on-screen
instructionwindow. Theuser interface provides user-friendliness andease-of-use when operatingthemonitor.
When you press thebuttononthefrontcontrolof yourmonitor,theOn-Screen Display (OSD)Main Controls window will popupand
you can then startmakingadjustmentsto yourmonitor'svariousfeatures.Use theorthekeys to makeyouradjustments.
TheOSDTree
Digital signal input:

8190B5 LCD
Go to cover page
On-screen Display
Analog signal input:

9
190B5 LCD
Go to cover page
OSD Lock/Unlock, Aging Mode
To Lock/Unlock OSD FUNCTION(User Mode)
The OSD function can be locked by pressing"OK"button for more
than 10 seconds, the screen shows following windows for 3 seconds.
Everytime when you press"AUTO" or "OK" button, this message app-
ears on the screen automatically.
ATTENTION SIGNAL
OSD MAIN CONTROLS UNLOCKED
Unlock OSD function
Locked OSD function can be released by pressing "OK" button for more
than 10 seconds again
ATTENTION SIGNAL
OSD MAIN CONTROLS LOCKED
NO VIDEO INPUT
This screen appears if there is no video signal input. Please check that
the signal is properly connected to the video card of PC and make sure
PC is on
ATTENTION SIGNAL
CHECK CABLE CONNECTION
CANNOT DISPLAY THIS VIDEO MODE..
This screen warns when the input frequency from the computer is not
a standard video mode or out of the monitor's scanning range.
Please change the display mode of the operating software in the com-
puter(i.e.windows) to 1280*1024@60HZ for best display results.
ATTENTION SIGNAL
CANNOT DISPLAY THIS VIDEO
MODE,CHANGE COMPUTER DISPLAY
INPUT TO 1280*1024@60HZ
I
WAIT FOR AUTOMATIC ADJUSTMENT
This screen appears when you press the "AUTO" buttons at the same
time. It will disappear when the monitor is properly adjusted
ATTENTION SIGNAL
WAITING FOR AUTOMATIC ADJUSTMENT
Access Aging.. Mode
Step1:TurnoffLCDmonitor, and disconnect Interface Cable betwe-
en Monitor and PC.
Step 2 : [Push AUTO " " & OK " " buttons at the same time and
hold it]+[Press power " " button untill comes out " AGING screen"
] => then release all buttons.
Bring up:
AGING...
After 15 seconds, bring up:
After 15 seconds, bring up:
AGING...
After 15 seconds, bring up:
----------
----------
repeatly
Connect Signal cable again=> go back to normal display

10 190B5 LCD
Go to cover page
Pixel Defect Policy
Philips' FlatPanel Monitors Pixel Defect Policy
Philips strivesto deliverthehighestquality products. Weusesome
of theindustry's mostadvanced manufacturing processes and
practice stringentquality control.However, pixel orsubpixel defects
ontheTFT LCDpanelsusedinflatpanel monitors aresometimes
unavoidable.Nomanufacturercan guarantee thatall panelswill be
free frompixel defects, butPhilips guaranteesthatanymonitorwith
an unacceptable numberof defectswill berepairedorreplaced
under warranty.Thisnotice explains thedifferenttypesof pixel
defects and definesacceptable defect levelsforeachtype.Inorder
to qualify forrepairorreplacementunder warranty,thenumberof
pixel defectson a TFT LCDpanel must exceedtheseacceptable
levels. Forexample,nomorethan 0.0004% of thesub pixelsona
15" XGA monitormaybedefective.Furthermore,Philips setseven
higher quality standards forcertaintypesorcombinations of pixel
defectsthataremorenoticeable than others. Thispolicy isvalid
worldwide.
PixelsandSubpixels
Apixel,orpictureelement,iscomposedof three sub pixelsinthe
primarycolors of red, green and blue.Manypixelstogetherform an
image.Whenall sub pixelsof apixel arelit,thethree coloredsub
pixelstogether appear as a single white pixel.Whenall aredark, the
three coloredsubpixelstogetherappear as a single blackpixel.
Othercombinations of lit and dark sub pixels appear as single pixels
of othercolors.
Typesof Pixel Defects
Pixel and sub pixel defects appear onthescreenindifferentways.
Therearetwocategoriesof pixel defects and severaltypesof sub
pixel defectswithineachcategory.
BrightDotDefectsBrightdot defects appear as pixelsorsub
pixelsthatarealwayslit or'on'. Thesearethetypesof brightdot
defects:
Onelitred, greenor
bluesub pixel
Twoadjacent lit sub
pixels:
-Red+Blue=
Purple
-Red+Green=
Yellow
-Green+Blue=
Cyan (LightBlue)
Three adjacent lit sub
pixels(onewhite
pixel)
BlackDot DefectsBlackdot defects appear as pixelsorsubpixels
thatarealways dark or'off'. Thesearethetypesof blackdot defects:
Onedark sub pixel Twoorthree adjacentdark sub pixels
Proximity of Pixel Defects
Becausepixel and sub pixelsdefectsof thesametypethatarenear
to oneanothermaybemorenoticeable,Philips alsospecifies
tolerancesfortheproximity of pixel defects.
Pixel Defect Tolerances
In orderto qualify forrepairorreplacementduetopixel defects
during thewarranty period, a TFT LCDpanel inaPhilips flatpanel
monitormusthavepixel orsubpixel defectsexceeding the
toleranceslistedinthe following tables.
BRIGHT DOT DEFECTS ACCEPTABLE
LEVEL
1lit subpixel 3orfewer
2 adjacent lit subpixels1orfewer
3 adjacent lit subpixels(onewhite pixel) 0
Distance betweentwobrightdot defects* 25 mm ormore
Totalbrightdot defectsof all types 3 orfewer
Note:
* 1 or 2 adjacent sub pixel defects = 1 dot defect
All Philips monitors are ISO13406-2 Compliant
BLACK DOT DEFECTS ACCEPTABLE
LEVEL
1 dark subpixel 5orfewer
2 adjacentdark subpixels2orfewer
3 adjacentdark subpixels 0
Distance betweentwoblackdot defects* 15 mm ormore
Totalblackdot defectsof all types 5 orfewer
TOTAL DOT DEFECTS ACCEPTABLE
LEVEL
Totalbrightorblackdot defectsof all
types5orfewer

11
190B5 LCD
Go to cover page
Warning Message Table
Warning message table
Item AttentionSignals DisplayTime ConditionAttentionoff
1CANNOTDISPLAY
THIS VIDEO MODE,
CHANGE COMPUTER
DISPLAY
INPUTTO 1024X768
@ 60HZ
30 mins This warning appears when theinput signal fromyour
computer is notinastandardvideomodeorisoutof the
monitor’sscanning range.After 30 mins,monitor enters
sleeping mode.
No
2NO VIDEO INPUT30 mins This message appears when there is nosignal inputbutwith
cable while AC orDC while power on.After 30 mins,monitor
enters sleeping mode.
Yes
Show floating
menu
ATTENTION
SIGNAL OFF
3CHECK CABLE
CONNECTION
30 mins This message appears when a signal cable is disconnected
while monitorisworking.After 30 mins,monitorenters
sleeping mode.
Yes
Show floating
menu
ATTENTION
SIGNAL OFF
4ENTERING SLEEP
MODE
3secs This message appears when monitorisabouttoenter power
saving mode.
No
5WAITING FOR
AUTOMATIC
ADJUSTMENT
till auto
adjustment
finished
This message is displayedwhen theautoadjustment button
is pressed. Itdisappears when automaticadjustments are
completed.
No
6USE 1024 X 768 FOR
BESTRESULT
Ontop of OSD
main menu
The message will show up at thetop of theOSD main menu
in redcolorwhen theinputresolutionisnotthe1024x768.
Yes
7OSD MAIN
CONTROLS LOCKED
3secs/orTill
OSD MAIN
CONTROLS
UNLOCKED
appear
This message will appear 3secondstoindicate theOSD
MAIN CONTROLS statuswhen tolock orun-lock it by
pressing MENU(OK) buttonformore than 10 secondswhile
there is videoinputfromPC. This functionprovides the
alternativethat user can lock all theOSD main controlin
case user don’twant theFOS performance setting tobe
changed, forinstance,during commercial exhibition.
No functionwhen
push10secs(If
OSD lock then
attentionoff, not
anymessage and
onlyattentionon)
8OSD MAIN
CONTROLS
UNLOCKED
3secs This message will appear 3secondstoindicate theOSD
MAIN CONTROLS statuswhen toun-lock it bypressing
MENU(OK) buttonformore than 10 secondswhile there is
videoinputfromPC.
No functionwhen
push10secs
9 ATTENTION SIGNAL
ON
ATTENTION SIGNAL
OFF
3secs
3secs
This message will appear 3secondstoindicate the attention
signals in ON orOFF statuswhen toswitch this functiononor
off bypressing theAUTObuttonformore than 10 seconds
while at novideoinputfromPC.
Yes
10 THIS IS 85HZ
OVERSCAN, CHANGE
COMPUTER DISPLAY
INPUTTO
1024X768@60HZ
10 mins This message will appear 5secondsinevery60secondsfor
10 minutes when theinputof PC videotiming is at 85Hz
mode.
Remark: AUTOis still functional in this mode
No
11 thewindow of OSD
MAIN CONTROLS
60 secs This message will appear when theOK buttonispressed. Yes
12 thewindow of
BRIGHTNESS
60 secs This message will appear when theBRIGHTNESS buttonis
pressed.
Yes
13
(Notfor
150S
project)
SELECTED INPUT
NOTAVAILABLE
5secs When just one input(analogordigital), press inputswitch or
hotkey, then after show this warning message 5sec, return
tooriginal input.
TBD

12 190B5 LCD
Go to cover page
Factory Mode
Front Control Panel
Access Factory Mode
How to get into Factory Mode Menu
Step1:
Turn off monitor.
Step2:
[Push AUTO " " & OK " " buttons at the same time and hold it]
+[Press power " " button untill comes out "Windows screen" ]
=> then release all buttons
Step3:
Press OK " " button, bring up Factory mode indication as shown
in Fig2.
Factory Mode
indicator
Factory Menu
Cursor can move on gray color area
Hot key function: by pressing " up " and " DOWN " key
Simultaneously at User Mode (or Factory Mode)
(PS: The OffsetRGBfunction can be used on reduce or eliminate
snowy noise on the background when the resolution of video signal
is 1280*1024 vertical 60Hz. Slightly increase or decrease the value
until snowy noise completely disappear
BL : Black level value
SUB- BRI : Brightness value range( Min Max )
SUB- CON : Contrast value range( Min Mid Max )
SRGB- B : Brightness of sRGB
SRGB- C : Contrast of sRGB
Gain- m : Minimum value of User Gain
Gain- M : Maximum value of User Gain
AUTO- SUB : To do Auto color function when push Menu key in white
pattern
OSDTIMER : OSD time out control( sec)
VCON : For LG panel control
IDX : Limit current of inverter (LG:0)
SCALER : Read/Write scaler register
NVRAM : READ/Write eeprom address
Panel : HS ( Hannstar panel )
LG ( LG. Philips panel )
CPT(CPT panel)
Hudson
HUDSON4 190B5 B062 20040306
Mean: it is not
1280*1024
resolution now

13
190B5 LCD
Go to cover page
All units that are returned for service or repair must pass the
original manufactures safety tests. Safety testing requires both
and testing.Hipot Ground Continuity
HI-POT TEST INSTRUCTION
1.Application requirements
2.
1.1 All mains operated products must pass the Hi-Pot test as
described in this instruction.
1.2 This test must be performed again after the covers have
been refitted following the repair, inspection or modification
of the product.
2.1 Connecting conditions
2.1.1 The test specified must be applied between the parallel-
blade plug of the mainscord and all accessible metal
parts of the product.
2.1.2 Before carrying out the test, reliable conductive
connections must be ensured and thereafter be
maintained throughout the test period.
2.1.3 The mains switch(es) must be in the "ON" position.
2.2 Test Requirements
All products should be HiPot and Ground Continuity tested as
follows:
Test 2820VDC 1700VDC Test current:
voltage (2000VAC) (1200VAC) 25A,AC
Test time:
Test time 3 seconds 1 second 3 seconds(min.)
(min.) Resistance
required:
Trip set at 100 uA 5 mA <=0.09+Rohm,
current for Max. R is the
(Tester) limitation; set resistance of
at 0.1 uA for the mains cord.
Min. Limitation
Ramp set at 2
time seconds
(Tester)
Test method
Condition HiPot Test for HiPot Test for Ground Continuity
products where products where Test requirement
the mains input the mains input is
range is Full 110V AC(USA
range(or 220V type)
AC)
2.2.1 The minimum test duration for Quality Control Inspector
must be 1 minute.
2.2.2 The test voltage must be maintained within the specified
voltage + 5%.
2.2.3 There must be no breakdown during the test.
2.2.4 The grounding blade or pin of mains plug must be
conducted with accessible metal parts.
3. Equipments and Connection
3.1. Equipments
For example :
- ChenHwa 9032 PROGRAMMABLE AUTO SAFETY
TESTER
- ChenHwa 510B Digital Grounding Continuity Tester
- ChenHwa 901 (AC Hi-pot test), 902 (AC, DC Hi-pot test)
Withstanding Tester
3.2. Connection
4. Recording
Hipot and Ground Continuity testing records have to be kept
for a period of 10 years.
* Turn on the power switch of monitor before Hipot and
Ground Continuity testing.
Connect the "video cable"
or "grounding screw"
to the CLIP on your tester.
Video cable
(Rear view of monitor)
Connect the power cord
to the monitor.
Grounding screw
Power outlet
(ChenHwa 9032 tester)
Clip
Clip
Satety Test Requirements

14 190B5 LCD
Go to cover page
Electrical Instructions
1. General points
1.1 Duringthetestandmeasuring, supplyadistortion free
AC mains voltagetotheapparatus via an isolated
transformer withlowinternal resistance.
1.2 All measurements mentionedhereafter are carriedout
at a normal mains voltage(90-132VACfor USA
version, 195 -264 VAC for EUROPEAN version,or 90
- 264 VAC for themodel withfull rangepower supply,
unless otherwise stated.)
1.3 All voltages are to bemeasuredor appliedwith
respect to ground, unless otherwise stated.
Note:don‘tuseheat-sinkas ground.
1.4 Thetesthas to bedone on a complete set including
LCD panel after 30 minutes warm-upat least in a room
withtemperature of25+/-5degree C.
1.5 All values mentionedin these test instruction are only
applicable ofawell alignedapparatus,withcorrect
signal.
1.6 Theletterssymbols (B) and(S)placedbehindthetest
instruction denotes
(B): carriedout 100% inspection at assemblyline
(S): carriedout test by sampling
1.7 Thewhite balance (color temperature)has to betested
in subduedlightedroom.
1.8 Repetitivepower on /off cycle are allowedexceptitshould
beavoidedwithin 6sec.
2. Input signal
2.1 Signal type
2.1.1 Video signal input
Signal source:pattern generator format as attachment.
(Table 1to 33) Reference generator:QuantumData
802G Theinptsignals can beappliedin twodifferent
modes:
1). VESA Analog
Thevideo input consists ofred, green,andblue signals.
Thevideo signals are analoglevels,where 0V
correspondstoblackand 700mV is themaximumsignal
amplitude.Input impedance ofvideo pins is 75 ohm +-
1%.
2). Intel DVIDigital
Input signal:Four channel TMDS signals
2.1.2 Sync signal input
Thecapabilityofsync signal inputs shall include
separate sync,composite sync andsync on green.
input impedance:2k2ohmsThesignals are definedas
follow:
Separate sync TTL level,Positive/Negative
Composite sync TTL level,Positive/Negative
Sync on green H-sync TTL level,Positive/Negative
Signal source:pattern generator format as attachment
(Table 1to 33) Reference generator:QuantumData
802G
2.2 Input signal mode
Pre-set 33 modes
PRESETVIDEORESOLUTION
#Resolution H-FrequencyPixel rate V-FrequencyComment
1 640X350 31.5K 25.175 70Hz IBM VGA 10h
2 720X400 31.5K 28.322 70Hz IBM VGA 3h
3 640X480 31.5K 25.175 60Hz
4 640X480 35.0K 30.24 67Hz
5 640X480 37.9K 31.5 72Hz
6 640X480 37.5K 31.501 75Hz
7 640X480 43.3K 36 85Hz
8 800X600 35.2K 36 56Hz
9 800X600 37.9K 40 60Hz
10 800X600 48.1K 50 72Hz
11 800X600 46.9K 49.498 75Hz
12 800X600 53.7K 56.251 85Hz
13 832X624 49.7K 57.28 75Hz MAC
14 1024X768 48.4K 65 60Hz
15 1024X768 56.5K 75 70Hz
16 1024X768 60.0K 78.75 75Hz
17 1024X768 61.1K 83.096 76Hz IBM XGA-2
18 1024X768 68.7K 94.5 85Hz
19 1152X864 54.0K 79.9 60Hz non-VESA
20 1152X864 67.5K 108 75Hz
21 1152X864 63.9K 94.5 70Hz non-VESA
22 1152X870 68.7K 100 75Hz MAC
23 1152X900 61.8K 92.94 66Hz SUN ModeIV
24 1152X900 71.8K 108 76Hz SUN ModeII
25 1280X960 60.0K 108 60Hz
26 1280X960 75.0K 129.895 75Hz non-VESA
27 1280X1024 64.0K 108 60Hz
28 1280X1024 71.7K 117 67Hz SUN ModeV
29 1280X1024 76.0K 130.223 72Hz DOS/V
30 1280X1024 80.0K 135 75Hz
31 1280X1024 81.1K 135.008 76Hz SUN ModeI
32 960X720 44.76K 57.58 60Hz
33 960X720 56.4K 72.42 75Hz
2.3 Allowed85Hzoverscan signal modespecified
Once thesignal input ofPCis 85Hz, this monitor is able to displayat
least for10 minutes.An attention signal appears andshowsThis is
85Hz over scan,changecomputer displayinput to 1280*1024 @
60 Hz
"
"

15
190B5 LCD
Electrical Instructions
Go to cover page
Dot rate (MHz) H. Freq(KHz) ModeResolution V. Freq(Hz)
36.000 43.269 VESA 640 * 480 85.008
56.250 53.674 VESA 800 * 600 85.061
94.500 68.677 VESA 1024 * 768 84.997
3. POWERSUPPLY(Buyin power board)
3.1 SetuptheAC I/P at 90VAC, add 2.6A loadingto +12V O/P
andDCO/Pvoltageis12V +/- 1.2V, 1A loadingto 3.3V O/P
andDCO/Pvoltageis3.3V +/- 0.165V, 1.5A loadingto 5V
O/P andDCO/Pvoltageis5V +/- 0.5V (B).
3.2 Checkvoltageat3.3V O/P shouldbewithin therange3.3V
+/- 0.165V.
5.0V O/P shouldbewithin therange5.0V +/- 0.5V.
12V O/P shouldbewithin therange12V +/- 1.2V (B)
4. DisplayAdjustment
Access to factorymode(RS232) in auto-alignment system
Thecommunication protocol switchto RS232 .
4.1 Auto color adjustment (B)
Applya640 * 480 / 60Hz signal with16level greytest
pattern,set brightness control at 100%, andcontrast control
at 70%. Adjust theR. G. B offset,andgain to calibrate the
color smoothlyand64-greylevel distinguishable.
4.3 Adjustment ofWHITE-D (B)
Applya1280*1024 / 60Hz signal withwhite pattern,set
brightness control at 100%, andcontrast control at 70%.
Adjust theR, G, B Sub-Gain,for thescreencenter,the
1931 CIE chromaticity(X,Y)co-ordinates shall be:
Use Minolta CA-110 for color coordinates andluminance
check. Luminance is > 200 Nits in the center of the
screen when brightness at 100% and contrast set to
100%.
4.4 Adjustment ofsRGB
Applya1280*1024/ 60Hz signal withwhite pattern,set
brightness control at 100%, andcontrast control at 70%.
Adjust theR, G, B Sub-Gain,for thescreencenter,the
1931 CIE chromaticity(X,Y)co-ordinates shall be:
sRGB
x(center)0.313±0.008
y(center)0.329±0.008
Ynits 180 ±10
9300°K6500°K
x(center)0.283±0.008 0.313 ±0.008
y(center)0.297±0.008 0.329 ±0.008
4.5 EEPROM presetting(B)
After finishingall theadjustment,set:Brightness control t
100% Contrast control to 70% OSD position at middle of
screen COLOR ADJUST to 6500K color.
4.6 When adjustment is finished, monitor shouldbesetto
6500Kcolor.

16 190B5 LCD
Go to cover page
Mechanical Instructions
Front View
Back View
Step1. Remove the base as shown in Fig. 3-4
-Remove the hinge cover
-Remove the six screws
Fig.1
Fig.2
Fig.3
Fig.4
Fig.5
Step2. Remove the Front Bezel
-Remove the two screws as shown in Fig.5
-Use the thin " " screw driver to open the clicks as shown
in Fig.6-8.
Step3.Remove the BacK cover
- Remove the three threws as shown in Fig.9
- remove the five clicks as shown in Fig.9 and disconnect 1931 from
Audio-board and 1712 from Control-board
- Use the thin " " type screw driver to open the clicks as shown in
Fig.10
Step4. Remove the Matel frame board
- Remove the ten screws as shown in Fig.11
- Disconnect D-SUB & DVI hexagonal screws as shown in Fig.11
- Remove the matel frame board as shown in Fig.12
Fig.6
Fig.8
Fig.7
Fig.9
Fig.10
1931
1712
Fig.11

17
190B5 LCD
Mechanical Instructions
Go to cover page
Step 5. Remove the sclar and power board.
- RemoveDisconnect the 1503,1505,1412 and 4 backlight cables
as shown in Fig.13
- Remove the scaler and power board as shown in Fig.14
Panel
**************************************************************************************
***************************************************************************************
In warranty, it is not allowed to disassembly the LCD panel, even the
backlight unit defect.
Out of warranty, the replacement of backlight units is a correct way
when the defect is caused by backlight (CCFL, Lamp).
Fig.12
4 backlight cables 1412 to Panel
1505 to Power board
1503 to Control board
Fig.13
Fig.14

18 190B5 LCD
Go to cover page
ISP Cable for CPU
Configuration and procedure
ISP ( In System Program) software is provided by Genesis to upgrade
the firmware of CPU.
ISP cable is for the interface between "Parallel port of PC" and
"15 pin-D-SUB connector of monitor.
System and equipment requirements:
1. An i386 (or above ) personal computer or compatible.
2. Microsoft operation system Win 95/98 or Win 2000
3. ISP software
4. ISP cable (3138 106 10148) as shown in Fig.1
Fig.1 ISP CABLE :12NC IS "3138 106 10148".
5.Connect ISP cable and main cord to monitor as shown in Fig.2.
6. Install and setup the Gprobe 4.5.0.5.exe program
step 1. Create a folder in your PC .for example: D:\190B5
step 2.Copy ISP software 190B5 software .Zip into your folder
step 3.Unzip ISP.ZIP into your folder as shpwn in Fig.3
step 4.Double click the Gprobe4.5.0.5.exe icon to install the
application as shown Fig.4
Fig.3
Fig.4
Step5.Clickthenext till the setup finished. And creat a short cut on the desktop.
190B5
190B5
H4190B5-200

19
190B5 LCD
Go to cover page
ISP CABLE FOR CPU
Update the firmware
1. Double click the Gprobe.exe icon ,then appears window
as shown in Fig.5
2. Press the options then choose configure Pin as shown in Fig.5
3. From the menu that appears, choose the number 17 in "output
pin and the number 12 in " input pin as shown in Fig.6
Fig.5
Fig.6
4. Press the options then choose connection setup as shown in
Fig.7
5. From the menu that appears , choose the DDC2Bi3 in "protocol"
and the LPT (0x378) in "port" as shown in Fig.8
Fig.7
Update the firmware
click the commands and select the Batch, as
shown in Fig.9, Fig.10
Fig.8
Fig.9
Fig.10
Click the button as shown in Fig.10 to browse the Iicisp.txt file in the
folder that you create.
Note: you should pay attention to the path in the Iicisp.txt file.
It is the same as the folder's path that you create.

20 190B5 LCD
Go to cover page
ISP Cable for CPU
Fig.11 click "OPEN"
Shut of the AC power
Click the "OK" button and then open the AC power, after the follow
window appears, the update is completed.
190B5
190B5
190B5
H4190B5-200