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PANASONIC TH-42PX75U - H-50PX75U - TH-42PX77U - TH-50PX77U - PLASMA TV - TROUBLEHOOT - LED BLINKS

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LED BLINKS 6 TIMES
LED BLINKS 7 TIMES
Trouble Mode = SC Energy Recovery SOS
Defective Board (Possibility = SC, SS, D, P Board (SC > SS, D, P)
LED BLINKS 8 TIMES
Trouble Mode = SS Energy recovery SOS/Panel
Defective Board (possibility) = SS, SC, D, P board (SS>SC,D,P)/PDP
LED BLINKS 9 TIMES

Trouble Mode = Panel Status
Defective Board = D Board
In this case, only the D board is defective.
LED BLINKS 10 TIMES
10 BLINKS ALSO CAN BE
Trouble Mode = SUB 5V SOS, Main 3.3V SOS DTV 9V SOS, Tuner Power SOS
Defective Board = P, A, SC,SS Board.
To avoid potential shock from the VSUS voltage, discharge the connectors SC2 or SS11 before reconnecting them into their respective socket.
LED BLINKS 12 TIMES
Trouble Mode = Sound SOS
Defective Board (Possibility) = Speakers, A Board.



PANASONIC TH-42PX75U - H-50PX75U - TH-42PX77U - TH-50PX77U - PLASMA TV - Diagnosis Picture Faults

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Picture problem such as “Picture Noise and or Vertical Line”displayed all over the screen is mainly caused by a defective D or A board. The “internal Test Pattern Generator” can help determine whether to replace the D or A board. The D board creates the test patterns. Follow the steps below to confirm the operation of the D or A boards.
Pattern = Abnormal
D Board
Pattern = Normal
A Board (or D board)
TO ENTER THE TEST PATTERN
  • While pressing "VOLUME-" button of the TV set, press "RECALL" button of the remote control three times within 3 seconds.
  • Push button"1" of the Remote Control several times to select the “AGING" setting.
  • Press the number “3" button or the number “4” button of the Remote Control to select the test pattern.
DIAGNOSIS BY REMOVING THE A5 CONNECTOR
Symptom such as “No picture, No OSD, Sound OK” is mainly caused by a defective A or D board. The internal pattern generator cannot be accessed due to the loss of OSD. This method makes it possible to determine whether the A board or the D (SC,SS) is defective.
Diagnosis
Connect the TV after removing A5 Connector
Symptom
No picture (Sound OK)
White Picture = A Board (D board)
No Picture = D board (SC or SS)
BLOCK DIAGRAM & EXPLANATION
  • This white pattern is generated by IC9900 on D board.
  • When the TV is plugged in after disconnecting connectorA5, it turns on automatically and a white picture is provided to the panel drive circuit.  If the panel drive section of the unit is ok, a white picture is automatically displayed by the PDP.
HOW TO DETERMINE THE DEFECTIVE BOARD
PANEL GAS LEAKAGE
Because of a very small crack in the panel, gas leakage will start.  In this picture, gas leakage started at the left top corner.  Finally, gas leakage will lead to the symptom “No picture with buzz noise”
Abnormal Color, Vertical Line, Sync Error, Noise Picture [For all models]
  • A Board, D Board, SC Board, SU Board, SD Board
  • Enter the “Internal Test Pattern Generator”
or
  • Is the screen “White”, after disconnecting the connector “A5”?
  • Test Pattern OK or White Picture displayed
 A ( and possibly D) Board defect.
  • Test Pattern NG or White Picture not displayed.
D, SC,SU,SD Board defect.

PANASONIC TH-42PX75U - H-50PX75U - TH-42PX77U - TH-50PX77U - PLASMA TV - TROUBLESHOOTING - Vertical Lines on Screen

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THIN VERTICAL LINE, OR, ONE BLOCK NOT LIGHTING
PDP panel (Driver IC) NG ( or D board, or C board)


A number of blocks not lighting.
D board (or C board) NG
No Picture, Picture noise, Full Horizontal line, etc.
  • Trouble at Upper half : SU-board (SC or D) defect.
  • Trouble at Lower half : SD-board (SC or D)defect.
  • Full Horizontal line at both area : SS-board (D)defect
Horizontal line (Lower side) : SD board
Horizontal line (Upper side) : D board
Horizontal line (Both area): SS board
Cyan noise (Right side) : D board

Trouble at Right half : D-board defect
Trouble at Left half : D-board defect
Vertical line : Panel

Trouble at Right half : D or C1 board (Panel) defect
Trouble at Left half : D or C2 board (Panel)defect
No Picture, Picture noise, Half Vertical line, etc for 50inch (HD Panel).
Trouble at Upper right => C1 board or Panel defect.
Trouble at Upper middle => C2 board or Panel defect.
Trouble at Upper left => C3 board or Panel defect.

PANASONIC TH-42PX75U - H-50PX75U - TH-42PX77U - TH-50PX77U - PLASMA TV - TROUBLESHOOTING - Examples of Faults and Repair

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FAULTS
42 inch (HD panel) =>  D Board.
42 inch (HD panel) => A Board.
42 inch (HD panel)  => Result: SC Board
42 inch (HD panel) =>Result: D Board
42 inch (HD panel) =>  A Board

42 inch (HD panel) => SC Board
42 inch (HD panel) => D Board
42 inch (HD panel) => SU Board

SS BOARD

PANASONIC TH-42PX75U - H-50PX75U - TH-42PX77U - TH-50PX77U - PLASMA TV - Self Cehck & Reset

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TO ACCESS SELF CHECK
  • Select a television channel, and while pressing the [VOLUME ( -)] button on the main unit, press the [OK] button on the remote control for more than 3 seconds.
SELF CHECK SCREEN
To Exit the self-check screen.
  • Press and hold the Power button on the TV for 5 seconds or disconnect the AC cord from the wall outlet.
TV volume down & OK on remote only does a basic IC self check. It does NOT Reset the TV.  It does not clear channel programmed settings, picture settings, channel labels, LOCK mode settings, or password.  Using this method, it shows the unit firmware version (Peaks 1.050 and GenX1.00) and it checks IC communications ONLY.  This is more useful to identify the firmware version without having to decode the info in the setup menu About/Version screen.
FOR ALL MODELS
To Reset the Unit, turn the TV on and while pressing the “VOLUME ( -)”button on the main unit, press the “Menu” button on the remote control for more than 3 seconds.  The Self-Check menu appears on screen. Then, disconnect the AC cord from the wall outlet.  All customer-programmed parameters will be erased.

PANASONIC TH-42PX75U - H-50PX75U - TH-42PX77U - TH-50PX77U - PLASMA TV - LAYOUT & PART NUMBERS - DRIVER SETUP ADJUSTMENT

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TH-42PX75U [BOARD NAME & PART NUMBER]
LAYOUT
TH-50PX75U [BOARD NAME & PART NUMBER]
LAYOUT
DRIVER SETUP ADJUSTMENT
  • Input a white signal to plasma video input.
  1. Picture menu: Vivid
  1. Normal: Set
  1. Aspect: Full
  • First perform Vsus adjustment.
  • Confirm the voltage level ofVSCN. This should be done after the adjustment of Vad which should be -105V When Vad= -105V, Vscn voltage is 40V ±4V.  See the panel label for voltages.
Connect an Oscilloscope to test point TPSC1. Using VR6602, adjust (T2)for 195+/-10µ Sec.

Set the picture controls as follows.
Caution
Input a 100% White signal to the unit.
Set the picture controls as follows:
Picture menu : Vivid
Normal : Set
Aspect : Full
TH-42PX75U/ TH-42PX77U DRIVER SETUP TABLE
TH-50PX75U/ TH-50PX77U DRIVER SETUP TABLE

PHILIPS AZ-3811 - MP3/WMA-CD 5W SOUND-MACHINE - DISASSEMBLE PROCEDURE

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DISASSEMBLY [DISASSEMBLE BOTTOM CABINET]

DISASSEMBLE FRONT CABINET
DISASSEMBLE MAIN BOARD
DISASSEMBLE RADIO BD & CD DECK
DISASSEMBLE CD DOOR
Click on pictures to Magnify

PHILIPS AZ-3811 - MP3/WMA-CD 5W SOUND-MACHINE - SCHEMATIC DIAGRAMS / CIRCUIT DIAGRAMS

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MAIN RADIO/RECTIFIER BOARD
PCB - MAIN RADIO/RECTIFIER - TOP VIEW
PCB - MAIN RADIO RECTIFIER - FOIL SIDE
CIRCUIT DIAGRAM - DISPLAY BOARD
PCB - DISPLAY
Click on pictures to Enlarge


TATUNG V27CMTT-Exx - V30CMTT-Exx - TROUBLESHOOTING - REPAIR FLOW CHART - CHILD LOCK RELEASE

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TATUNG 27”/ 30” Wide Screen European LCD Multi-Media Display.
FAULT CODES


NP1
No Picture and No Sound
in TV mode
•  Make sure the Power cord and Aerial Cable are
properly connected .
•  Make sure the batteries in remote control are not flat.
•  Press the POWERbutton to switch the TV on.
•  Switch to TV source by pressing “TV” button.
•  Run “Automatic Search ” by operating the remote
control

NP2
No Picture and No Sound
in video mode.
•  Check the connection between the optional video
equipment and the TV.
•  PressSCART , Video/S-V orCOMPONENTbutton
on the remote control to select the right video
equipment.

NP3
TV is automatically turned
off
•  Check if the “SLEEP” timer is activated .
•  Press the POWERbutton to turn on the TV once
again

PP1
Double Images /Ghosts
If the TV suffers interference from signals reflecting from
mountains or buildings , double-pictures or Ghosts will
occur.
•  Adjust the aerial’s location and direction
•  Replace it with one with better directionality.
•  Turn off or disconnect the booster if it is in use , as
the booster may be inappropriate

PP2
Snowy picture and noisy
Sound
If snow totally blocks out the picture , there may be a
problem with the Aerial or Aerial Cable .
•  Have the TV and aerial been connected properly ?
Has the aerial cable been damaged ?
•  Is the aerial pointing in the right direction ?
•  Is the aerial itself faulty ?
•  Try using a booster , as signal transmission may be
low

PP3
Distorted picture and
noisy sound
•  Turn off or disconnected the booster if it is in use , as
broadcast signals may be too strong

PP4
Dotted Lines / Stripes
in the picture
If the TV or aerial suffers interference from other
equipment , stripes or noise may appear in the picture.
•  Keep the TV away from noise sources such as
personal computer , amplifier , cars, motorcycles or
hair-dryers.
•  If the aerial suffers interference from a radio tower or
high-voltage wire , contact the local dealer.

PP5
Stripe noise .
•  Check the coaxial cable connected with the TV is not
oxidized
•  Do not use 300 ohm twin lead cables as interference
may occur
•  It is recommended to use a 75 ohm coaxial cable (not
supplied) to get premium quality picture.
•  Keep the aerial cable away from other connecting
cables

PP6
No color, too light or too
dark
•  Adjust the picture settings -  APC, Brightness,
Contrast, Saturation , Color Temp.
•  Press “RESET ” button on remote control

NS1
Good picture, no sound
•  Make sure the headphone is not connected.
•  Check audio connections between Equipment &
LCD-TV.
•  PressMUTEor VOL+ to cancel the muting.

NS2

•  Make sure that the aerial connected is 75 ohm coaxial
cable (not supplied) , not 300 ohm twin lead cables .
•  Keep the aerial cable away from other connecting
cables.
•  Press SOUNDto select “Mono” which will reduce
the noise.
•  Adjust BASSor TREBLEproperly in OSD.

NS3
No sound in TV mode
If the Country setting for the TV is incorrect , it may
prevent the sound from being issued
•  Select the Countrywhere you are located in OSD
Menu.
•  If the country is not listed in OSD , select “Other Country”.

NS4
Good picture, but noisy
sound or no sound in TV
mode.
•  If the sound of “all the channels” is noisy , run
A.P.S. again by selecting Automatic Searchin OSD.
•  If the sound of “some channels” is noisy or no
sound , select Manual Search and select an
appropriate TV systemin OSD such as B/G , D/K ,
I , L/L’ ; then , store it.
( If the sound system setting for a TV channel is
incorrect , it may prevent the sound from being issued .)

PC1
PC display is Not Full
Screen
•  Select Auto Image Adjustin OSD menu to optimize
the image .
•  If executing Auto Image Adjust still can not achieve
full screen display, adjust V.Position and H.Position
in PC mode

PC2
Horizontal Noise or Color
pattern is not uniform
•  Select Auto Image Adjust in OSD menu to optimize
the image .
•  If still no good , adjust H. Phase in OSD menu

PC3
“Out of Range” message
•  Maximum PC resolution supported is 1024x768 /
1280 x 768, so the screen will appear “Out of range”
at higher resolution.
•  Reduce the resolution to 1024x 768/ 1280x 768 from
PC .

PC4
No Sound
•  Make sure PC audio Input is well connected.

PC5
“Not Available” message
on PIP
•  If Main-Display is PC and Sub-display is
Component , resolution of the PC should be reduced
to 800 x 600 or lower ;then , the PIP will work well.

PC6
After“No Signal ”has
appeared on PC mode for a
while, the view disappears
and the “ LED Indicator”
turns from Green
to”Red”.
•  Press any key on keyboard or move the mouse to
activate the PC , because the PC may go to power
saving status.
•  Check if the D-sub connector (Cable) is disconnected or loose .

RC1
Remote Control does not
work
•  Make sure the batteries in remote control are not flat
•  Check the polarity of the batteries
•  Use the remote control in the front of the TV or from
less than seven meters away.
•  make sure the Remote Sensor Window is not under
strong lighting

RC2
Can not change channels
with the remote control
•  Press TV button to switch to TV mode.
•  Make sure the TV is not in Teletext mode

PH1
Picture suddenly Stops
Responding or abnormal
•  Press RESETbutton on remote control .
•  Unplug and then plug the Power Cord of the TV
from the AC outlet (or the Adapter from the TV).
•  If the picture still no good , execute “Initial
EEPROM”.
Press POWERkey to turn off the TV . Press“CH DN” key
on the top of LCD TV ( don’t release ) ; then, press
POWER button on remote control until “Initial
EEPROM” appears on the screen .
(Note: Remind user that every setting will be return to
factory preset mode including Child Lock , PIN No. ,
Programs)



TROUBLESHOOTING FLOW CHART [Clcik on images to Enlarge]
Power Start Not Good
NO BACK-LIGHT, BUT LED LIGHTS UP
NO PICTURE, BUT BACK-LIGHT & LED LIGHTS UP
PICTURE ABNORMAL OR HALT

Steps to Refresh EEPROM
  • Press POWER key to turn off the LCD-TV.
  • Press CH. Down key on the top of LCD-TV (don’t release) and then press POWER button on remote control, until “EEPROM Initial” appears.
  • Now, all the buttons, which you are pressing, could be loosed.

If the PIN of Child-Lock is forgotten , the only way to unlock the channels is to refresh EEPROM and the PIN will also recover initial number “1111”. Besides , all the STORE done by user will be refreshed to the situation of First Time Installation.
FRAME DEFECTS OR STRIPED LINES AT ALL SOURCES


TATUNG T25N440 - T32W440 - SERVICE ADJUSTMENTS - MAIN POWER [SMPS] SCHEMATIC [CIRCUIT DIAGRAM]

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POWER SUPPLY
Use potentiometer PP1to adjusts the HT for 151V ±0.5Vfor 16:9 tubes at the TSP28 terminals.
SERVICE MODE
  • Switch on the appliance whilst holding down the MENU key at the cabinet controls until the red LED lights up.
  • Release the MENU button at the cabinet and press the standby key on the remote control. The appliance will default to programme 1, or to AV1 if pin 8 of SCART 1 is connected to a voltage of ±12V. It is therefore important to make certain that the test signal needed to make the adjustments is available either on programme 1, or on the SCART 1 input, as selection of the sources is not possible thereafter in service mode.
  • The functions that can be adjusted (listed below) are selected using the P+ and P -- keys on the remote control and the adjustments then made with the Volume ±keys. It is advisable to make a note of initial values before making any changes so that they can be restored if necessary.In the event of replacing the NVM memory or the microprocessor, it is essential to make all the adjustments accessible in service mode, since the replacement memory is supplied without any prior programming and a new microprocessor requires initialization
  • IF VIDEO SETTING [IFxx AFCxx]
  • This adjustment requires special equipment and will be needed only for the ICC2 N1 version, which is also recognizable by the presence of the LC7 coil. If the coil is present, adjust IF and AFC to the values given on the label affixed to the left side of the main PCB so that a suitable approximation is achieved. If the coil is not present, adjust as follows              INITIALIZATION  (INIT CTV 831 x (VERSION)
  • The initialization procedure, which also indicates the software version for the microprocessor, is enabled with the Volume + key and must be carried out whenever the NVM memory or the microprocessor is replaced. Bear in mind that initialization has the effect of erasing all data from the memory except for the bytes option.
SCREEN GRID VOLTAGE [Vg2 Test]
Having selected the function, press the Volume + key. A luminous horizontal line appears in the middle of the screen. Adjust potentiometer G2 on the EHT transfonner so that the line is just visible (in a dimly lit room). Then press Volume (--) and wait for a few seconds until service mode is restored.
CONTROL BYTES [Cox]
These are control registers that must be set as follows:
Co4 00
Co3 27
OPTION BYTES [Opx]
The correct values to set for each appliance are given on the label on the back cover alongside the notations Op3, Op2 and Op1.
AUDIO STEREO A2 DECODER[LA/SA]
The LA and SA functions allow adjustment of the separation between the right and left audio channels, and of the respective levels. An RF stereo generator is therefore required. Disconnect modulation to the left hand channel and adjust LA to give 1.4Vp-p at pin 1 of the SCART 1 connector. Then adjust SA for the minimum residual signal at pin 3 of SCART 1. If a stereo generator is not available, set LA to 01 and SA to 0B to obtain a fair approximation.
LUMINANCE/CHROMINANCE DELAY SETTING [Yx]
The delay must be adjusted to the following values:
Vp = 18 => (PAL) (UK VERSIONS)
Vs = 30 => (SECAM)
Vn = 20 => (NTSC)
Yo =22 => (SCART)
The Yn function is only accessible if the signal is NTSC coded (standard accepted only by SCART)
ON-SCREEN DISPLAY [OSD]
Load the fixed value 3F. (AUDIO MENU APPEARS)
WHITE CONTROL [WB/WG/WR]
Using a black and white bar signal, adjust to obtain a correct gray scale.
HORIZONTAL GEOMETRY [TC/CPPW/EW/HSH]
There are two groups of these functions, one for 4:3 format (suffix 4) and one for 16:9 format (suffix 16), both of which must be adjusted because they are used in the zoom function (4:3 tubes included). The functions of the single parameters are as follows:
TC => Trapezium correction.  (The four adjustments appear in 4x3 and 16x9)
CP => Corner parabola correction
PW => Parabola correction
EW => Horizontal amplitude
HSH => Horizontal shift
VERTICAL GEOMETRY [SC/VSH/VA/VS]
Vertical geometry is adjusted starting with the VS (vertical slope), which is set so that the central horizontal line of the test signal is exactly at the boundary between the visible image and the black part below and must not then be changed again. The functions of the single parameters are as follows:
SC => Vertical S-correction (linearity)
VSH => Vertical shift
VA => Vertical amplitude
AFC Tuner SETTING [AG]
With a signal of lmV applied to the aerial input on an UHF channel, adjust to 4Vdc at pin 1 of the tuner.
TO EXIT SERVICE MODE
Once all the necessary adjustments have been made, press TV or MENU OFF on the remote control to save all the changes and return the appliance to normal operating mode.
                                             Power supply circuit diagram
Click on schematic to Magnify

LG FLATRON W2243C - DISASSEMBLE PROCEDURE

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DISASSEMBLY

  • Change the lock on the product as it follows and turn it in the arrow direction.
  • Separate the stand after separating 2 screws.
  • Pull the front cover upward.
  • Let all latches are separated.
  • Put the front face down.
  • Disassemble back cover.


LG FLATRON W2243C - SERVICE MODE - SOFTWARE UPDATE - POWER SUPPLY BOARD & CIRCUIT DIAGRAM OF POWER SUPPLY

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SERVICE MODE
  • Turn off the power switch at the right side of the display.
  • Wait for about 5 seconds and press MENU, POWER switch within 1 second interval.
  • The SVC OSD menu contains additional menus that the User OSD menu as described below.
  1. CLEAR ETI => To initialize using time.
  2. Auto Color => W/B balance and Automatically sets the gain and offset value.  (press key for over 3 sec)
  3. AGING => Select Aging mode(on/off).
  4. Module => To select applied module.
  5. NVRAM INIT => EEPROM initialize.(24C16, press key for over 3 sec)
  6. R/G/B-9300K => Allows you to set the R/G/B-9300K value manually.
  7. R/G/B-6500K => Allows you to set the R/G/B-6500K value manually.
  8. R/G/B-Offset => Allows you to set the R/G/B-Offset value manually.(Analog Only)
  9. R/G/B-Gain => Allows you to set the R/G/B-Gain value manually.(Analog Only)
POWER SUPPLY BOARD [SCHEMATIC]
POWER SUPPLY BOARD
ADJUSTMENT
Operating System: MS Windows 98, 2000, XP
Port Setup: Windows 98 => Doesn’t need setup.  Windows 2000, XP => Need to Port Setup. 
This program is available for LCD Monitor only.
PORT SETUP
  • Copy “UserPort.sys”file to “c:\WINNT\system32\drivers”folder
  • Run Userport.exe
  • Remove all default number
  • Add 300-3FF
EDID READ & WRITE
  • Run WinEDID.exe
Edit Week of Manufacture, Year of Manufacture, Serial Number
  1. Input User Info Data
  2. Click “Update”button
  3. Click “Write”button

LG FLATRON W2243C - TROUBLESHOOTING - Lamp Inverter Schematic Diagram

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NO POWER                   {Click on tables to Enlarge}
NO RASTER - NO OSD
DPM FAULT
LAMP INVERTER [circuit diagram]

AKIRA 21LAS1 - USES IC TMPA8803 - TMPA8823 & TMPA8821 - TROUBLESHOOTING PROCEDURES

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NO PICTURE - NO RASTER - NO SOUND
This failure is mainly caused by big-power circuit such as power supply, horizontal scanning, and vertical scanning.
The detail checking and repairing steps are as follow. {Click on tables to Enlarge}


NO PICTURE - NO SOUND
  • The failure shows that the set does not display the picture but it has noise wave or blue background or OSD on the screen. 
  • This means that the circuits of power supply, horizontal scanning, vertical scanning and video amplification are normal and they are not considered in the repairing. The failures are mainly in the small signal processing circuits.
  • Before checking these circuits, a kind of practical test method is introduced. It is called “Signal-input way ”. The detail is described as follow: 
  • Can use the resistance function of an analog multimeter, connect the red pole (negative in ohm scope) on the circuit board ground, then touch softly the test point with another pole (black pole) in ohm scope meanwhile observe the reactivity on the output device.
In the TV test, we mainly observe the noise wave on the CRT and listen to the noise voice liking as “Ka - Ka” from the loudspeakers.
NO SOUND
ONLY A HORIZONTAL LINE ACROSS THE MIDDLE OF THE SCREEN
ONLY A VERTICAL LINE AT THE MIDDLE OF THE SCREEN
This is a dangerous failure. It probable causes flash over and smoking inside the set. Don’ t let your TV work for a long time as this failure appears. Because the electron beam can not move in the horizontal orientation, the failure should be in the horizontal deflection circuit. We mainly check the open-circuit fault in horizontal
deflection circuit. The detail checking and repairing steps.
UOC DOES NOT WORK
In television, remote-control system is similar with the computer system. In theory, it can work if it holds two conditions as follow:
  1. The power supply: In general, it is 5V, the error is not above 10% and the disturbance pulse is as small as possible.
  2. The clock pulse: In TMPA88XX circuit, the clock pulse is generated by pin6 / pin7 of N204 and 8M crystal oscillator.
Remote-control system also needs reset circuit that can preset the values in internal register. The circuit around pin6 of N204 is called auto-reset circuit. If UOC detects errors in resetting; it will come to the state of program protected.  The detail checking and repairing steps are as follow:
NO ON-SCREEN DISPLAY
  • This failure is usually cause by the circuit of character generated and located. Most of reasons are that the horizontal and vertical fly back pulse signals do not come to UOC.
  • Can judge this failure by measuring the wave of the character in an oscilloscope.
The detail checking and repairing steps are as follow:

AKIRA 21BSS3 - SCHEMATIC DIAGRAM [Circuit Diagram] - FACTORY MODE - USING ICs TMP87PS38N - AN24C16 - TB1238N - BU4053BC -TDA7057AQ & BSC25-12AW23 FBT

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AKIRA 21BSS3 - CIRCUIT DIAGRAM  {Click on circuit to Magnify}

TB 123* SERIES I2C BUS CONTROL
  1. Press the numeric keys, switch to the position 12
  2. Press the numeric keys again, switch to the position 38
  3. Press the MENU key to call up the POS.LOCK menu
  4. Press the MUTE key
  5. Press the numeric key to input the password 1, 2, 3, 8. Then the TV will enter into the factory mode while the "M" displayed on the top of the screen.
Under adjusting mode, you can select the item you want by pressing the or  keys and you can adjust the value of the items when you press the “ > / <“ keys.
If the adjusting is default, please restore the data as previous or adjust according the table as follows.
  • The items with * in value are very special, do not adjust them at random. The items (1-5) are  used to debug white-black-balance of set.
  • The general secret code is 2175.
  • If you find the threadlike disturbance on the top of picture, please adjust the VM 2 in the items and make its value come to 34.
  • When E PROM does not work, please exchange the same model chip with data that the manufacture has already input. 2
DEFAULT DATA VALUE


AKAI LTA-27A901 – LCD TV - MAIN POWER SUPPLY [SMPS] CIRCUIT [SCHEMATIC] DIAGRAM

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SMPS [POWER SUPPLY] - SCHEMATIC DIAGRAM [Click on circuit to Magnify]



FUJITSU T1000 SERVER - USING SUN VTS SOFTWARE

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USING SOFTWARE
Checking Whether Sun VTS Software Is Installed.
This procedure assumes that the Solaris OS is running on the server, and that you have access to the Solaris command line.
  • Check for the presence of Sun VTS packages using the pkginfo command.
%pkginfo -l SUNWvts SUNWvtsr SUNWvtsts SUNWvtsmn
  • If SunVTS software is installed, information about the packages is displayed.
  • If SunVTS software is not installed, you see an error message for each missing package.
  • If SunVTS is not installed, you can obtain the installation packages from the Solaris Operating System DVDs.
  • The SunVTS 6.1 software, and future compatible versions, is supported on the server.
  • SunVTS installation instructions are described in the SunVTS User’s Guide.
EXERCISING THE SYSTEM USING THE SUN VTS SOFTWARE
  • Before you begin, the Solaris OS must be running. You also need to ensure that SunVTS validation test software is installed on your system.
  • The SunVTS installation process requires that you specify one of two security schemes to use when running SunVTS. The security scheme you choose must be properly configured in the Solaris OS for you to run SunVTS. For details, refer to the SunVTS User’s Guide.
  • SunVTS software features both character-based and graphics-based interfaces. This procedure assumes that you are using the graphical user interface (GUI) on a system running the Common Desktop Environment (CDE). For more information about the character-based SunVTS TTY interface, and specifically for instructions on accessing it by tip or telnet commands, refer to theSunVTS User’s Guide.
  • SunVTS software can be run in several modes. This procedure assumes that you are using the default mode.
  • This procedure also assumes that the server is headless, that is, it is not equipped with a monitor capable of displaying bitmap graphics. In this case, you access the SunVTS GUI by logging in remotely from a machine that has a graphics display.
  • Finally, this procedure describes how to run SunVTS tests in general. Individual tests may presume the presence of specific hardware, or might require specific drivers, cables, or loop back connectors. For information about test options and prerequisites, refer to the following documentation:
  • Log in as superuser to a system with a graphics display.
  • The display system should be one with a frame buffer and monitor capable of displaying bitmap graphics such as those produced by the SunVTS GUI.
  • Enable the remote display.  On the display system, type:  #/usr/openwin/bin/xhost  + test-system where test-system is the name of the server you plan to test.
  • Remotely log in to the server as superuser.
  • Use a command such as rlogin or telnet.
  • If you have installed SunVTS software in a location other than the default/opt directory, alter the path in the following command accordingly. #/opt/SUNWvts/bin/sunvts –display display-system:0 wheredisplay-systemis the name of the machine through which you are remotely logged in to the server.  The SunVTS GUI is displayed.
ERROR: information for "SUNWvts" was not found
ERROR: information for "SUNWvtsr" was not found
...
The following table lists the SunVTS packages:
SUNWvts            SunVTS framework
SUNWvtsr          SunVTS framework (root)
SUNWvtsts         SunVTS for tests
SUNWvtsmn      SunVTS man pages
SunVTS Test Reference Manual (SPARC)
SunVTS Doc Supplement (SPARC)
USING SUN SOFTWARE
Start SunVTS software.
Expand the test lists to see the individual tests.
  • The test selection area lists tests in categories, such as Network, as shown in. To expand a category, left-click the [+] icon (expand category icon) to the left of the category name.

Certain tests are enabled by default, and you can choose to accept these.  Alternatively, you can enable and disable individual tests or blocks of tests by clicking the check box next to the test name or test category name. Tests are enabled when checked, and disabled when not checked.
You can customize individual tests by right clicking on the name of the test. For example, inFIGURE , right-clicking on the text string ce0(nettest) brings up a menu that enables you to configure this Ethernet test.
START TESTING
  1. Click the Start button that is located at the top left of the SunVTS window. Status and error messages appear in the test messages area located across the bottom of the window. You can stop testing at any time by clicking the Stop button.
  1. During testing, SunVTS software logs all status and error messages. To view these messages, click the Log button or select Log Files from the Reports menu. This action opens a log window from which you can choose to view the following logs:
  • Test Error –Detailed error messages from individual tests.
  • VTS Kernel Error–Error messages pertaining to SunVTS software itself. You should look here if SunVTS software appears to be acting strangely, especially when it starts up.
  • Solaris OS Messages(/var/adm/messages)–A file containing messages generated by the operating system and various applications.
  • Log Files(/var/opt/SUNWvts/logs)–A directory containing the log files.
  • Information–Detailed versions of all the status and error messages that appear in the test messages area.

CARDIOFAX GEM - ECG-9010K - ECG9020K - TROUBLESHOOTING TABLE & SYSTEM ERROR MESSAGES -Medical Equipment

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TROUBLESHOOTING FLOW CHART {Click on charts to Enlarge}
TROUBLESHOOTING TABLE
SYSTEM ERROR MESSAGES 
During power-up and operation the instrument continuously checks itself for system failure. If a failure is detected, system information and error history are printed on the recording paper and all operations are stopped. System information and error history are also displayed (ECG-9020 only) or printed due to transient noise. After printing the system information and error history, the power of the instrument is automatically turned off.
NOTE: If the same system information appears again after restarting the instrument, do not use the instrument until service personnel has corrected the cause of the problem. Sending a copy of the system information to your nearest Nihon Kohden distributor helps us to troubleshoot your problem quickly.
ERROR CODES DISPLAYED
  • “Error 05”also appears when any key on the operation panel is pressed and held down.
  • When “Error 08”appears, the following settings are not reset to the factory initial settings even if the instrument is initialized.
display language - hum filter
hospital name - direct/modem connection
recording resolution setting - cue mark position
elapsed time - local language font
saved ECG data
ERROR HISTORY
Indicates the latest three errors and the date of the latest error, as in the example below.
##### System Information #####
Error number: 15
Date: Apr 20, 1998 10:41 AM
Program: 9020K
Version: 01-00 01-01 01-01

##### Error History #####
No.1 Error number: 15 Apr 20, 1998 10:30 AM
No.2 Error number: 15
No.3 Error number: 15

CARDIOFAX GEM - ECG-9010K - ECG9020K - DISASSEMBLE PROCEDURE - Medical Equipment

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BOARD AND UNIT LOCATION
CABLE CONNECTIONS
REMOVING THE TOP CASE
  • Reverse the instrument and remove the three M3 pan head screws.
  • Open the top casing in the direction of the arrow shown below.
  • Release the lock of the film cable connector with the small flat blade driver and your finger as shown in the expanded illustration and remove the film cable.
When opening the top casing, be sure not to let the top casing fall off. Otherwise, the film cable which connects the top casing and ECG control board and the film cable connector may be damaged. If the film cable is damaged, you must replace it with a new top casing assy.
REMOVING THE LCD ASS'Y
  • Remove the top casing as described.
  • Remove the four M3 pan head screws with spring washers which are marked with circles shown below.
  • Disconnect the LCD ass’y cable from the ECG control board.
  • Lift up the LCD assy so that the LCD assy flat cable is perpendicular to the ECG control board and pull out the LCD assy film cable from the connector on the ECG control board to remove it.
REMOVING THE THERMAL HEAD ASSEMBLY
Do not touch the surface of the thermal head with your bare hands.  This can cause some dots of the thermal head to malfunction. If you touch the surface of the thermal head, clean it with the provided thermal head cleaner pen or cotton moistened with alcohol.
  • Remove the top casing as described.
  • Remove the LCD assy as described.
  • Disconnect the thermal head assy connector from the thermal head assy.
  • Push the thermal head bracket fixed rib in the direction of the arrow shown below and lift off the thermal head bracket from the thermal head bracket fixed rib. If the thermal head bracket is not removed completely, push the other side of the thermal head bracket fixed rib the same as above and completely lift off the thermal head bracket.
  • Remove the thermal head springs from the thermal head spring hooks.
  • Remove the three M3 pan head screws with spring washers.
  • Remove the top casing as described.
  • Remove the LCD assy as described.
  • Remove the thermal head bracket as described.
  • Remove the two M3 pan head screws holding the motor assy to the bottom casing.
  • Disconnect the motor assy connector from the ECG control board.
  • Remove the bundle of leads which connects the mark sensor board and ECG control board from the lead hook.
  • Remove the M2 pan head screw with spring washer holding the mark sensor BD earth plate to the bottom casing.  The motor assy does not contain the motor sensor BD earth plate.
  • Lift off the motor sensor board with the motor sensor BD earth plate.
REMOVING THE MOTOR ASSEMBLY
REMOVING THE SPEAKER ASSEMBLY
  • Remove the top casing as described.
  • Remove the LCD assy as described.
  • Disconnect the speaker assy connector from the ECG control board.
REMOVING THE INVERTER BOARD
The inverter board has a high voltage circuit for the LCD backlight.  This can cause shock up to 10 minutes after the power is turned off.  After the power is turned off, wait 10 minutes before disassembling the instrument.
  • Remove the top casing as described.
  • Remove the LCD assy as described.
  • Remove the M2 pan head screw holding the inverter board to the ECG control board.
  • Remove the bundle of leads which connects the inverter board and ECG control board from the mini clamp on the power unit.
  • Disconnect the inverter board connector from the ECG control board.
  • Lift off the inverter board from the ECG control board.
REMOVING THE ECG CONTROL BOARD
Local language text is stored in the flash memory on the ECG control board. When the ECG control board is replaced, local language text is not available; only English text is available. To use the ECG with your own language after the ECG control board is replaced, you must reload the local language files to the ECG. Refer to the YZ-012H6 Translator Support Tool operator’s manual.
  • Remove the top casing as described.
  • Remove the LCD assy as described.
  • Remove the inverter board as described.
  • Remove the three M3 pan head screws with spring washers.
  • Remove the two spacer bolts 1.
  • Disconnect the thermal array assy connector from the ECG control board.
  • Lift off the ECG control board from the power board. The CNJ035 connector on the ECG control board is directly connected to its socket on the power board.
REMOVING THE POWER UNIT
  • Remove the top casing as described.
  • Remove the LCD assy as described.
  • Remove the inverter board as described.
  • Remove the ECG control board as described.
  • Remove the ground terminal assy.
  • Remove the two M3 pan head screws with spring washers holding the power unit to the bottom casing.  Be sure to use the correct length spacer bolt when replacing the power unit. The two types of spacer bolts which are used in the power unit are almost the same length.
  • Remove the three spacer bolts holding the power unit to the bottom casing.
  • Disconnect the battery terminal assy connector from the power unit.
  • Remove the ferrite tape holding the thermistor wire to the battery compartment.
  • Remove the battery cover plate.  Do not completely lift off the power unit from the bottom casing before removing the thermistor. Otherwise, the thermistor wire will break.
  • Slightly lift up the power unit and pull out the thermistor from under the rechargeable battery.
  • After pulling out the thermistor, lift off the power unit from the bottom casing.

CARDIOFAX GEM - ECG-9010K - ECG9020K - REPLACEABLE PARTS AND PARTS LIST - Medical Equipment

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TOP CASING ASSEMBLY
                                          RK-0009 for ECG-9020K
THERMAL HEAD ASSEMBLY
MOTOR ASSEMBLY
MAGAZINE ASSEMBLY
LCD ASSEMBLY
                                                        Click on pictures to Enlarge

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