REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Monday 8 April 2019

PANASONIC PROJECTOR - PANASONIC PT-AE900U - PT-AE900E – HOW TO ACCESS EXIT OPTION MENU


Panasonic projector - Panasonic PT-AE900U - PT-AE900E – How to access Exit option menu


Panasonic projector - Panasonic PT-AE900U - PT-AE900E – How to access Exit option menu – Self check mode – Flicker adjustment  
This projector has EXT OPTION in addition to standard on-screen menus.

There are SELF CHECK and FLICKER ADJ for service, etc.
Procedure to enter EXT OPTION
1. When the projector is power ON, press "POWER" button on the main unit or remote control unit to display "POWER OFF" confirmation screen.
2. Press the right-arrow button to select "CANCEL" in the "POWER OFF" confirmation screen.
3. On the main unit or remote control unit, press the buttons in order of up-arrow , down-arrow ,up-arrow  ,down-arrow " " and "ENTER".
(When the "ENTER" button is pressed, "EXT OPTION" menu is displayed.)
EXT OPTION Menu and Functions
FAN FULLMODE
Setting the cooling fan motor rotation speed
Switching ON "FAN FULLMODE", the rotation level of the fan becomes high-speed rotation (fixed). Moreover, when "FAN FULLMODE" is ON, changing "FAN CONTROL" in OPTION becomes impossible (setting FAN FULLMODE is given priority more than FAN CONTROL)
AUTO SETUP
Setting AUTO SETUP mode
NORMAL: To set the normal mode (the dot clock is adjusted strictly)
SPECIAL: To set the special mode (the dot clock is adjusted roughly)
Do not change the initial setting (NORMAL)
SELF CHECK
To enter the self-check mode
FLICKER ADJ
To enter the flicker adjustment mode
525i SD
When non-standard signal of 525i/625i is inputted (AV amplifier, etc.), synchronization might be disordered according to connected equipment. In this case, set 525i SD to ON.
525p OS
When 525p/625p signal is inputted, reflection noise (vertical striated beat) might be generated according to connected equipment. In this case, set 525p OS to ON. However, the resolution decreases a little.
HPLL
When non-standard signal of VIDEO/S-VIDEO is inputted (VCR, VHD, etc.), horizontal synchronization might be disordered according to connected equipment. In this case, set HPLL to OFF.
Canceling EXT OPTION
Press "MENU" button on the main unit or remote control unit.
Self-Check Mode
This mode is used to narrow down the location of the failure.
Procedure to enter the self-check mode
Select "SELF CHECK" on "EXT OPTION" menu and press "ENTER" button on the main unit or remote control unit.
Canceling the self-check mode
Press "MENU" button on the main unit or remote control unit.
Flicker Adjustment Mode
If replacing the optical parts (LCD Panel / LCD block) or A-P.C.Board of this projector, enter the flicker adjustment mode and minimize the flicker.
Procedure to enter the adjustment mode
Select "FLICKER ADJ" on "EXT OPTION" menu and press "ENTER" button on the main unit or remote control unit.
Note: "DESK setting (red)" is displayed when entering the adjustment mode.
Adjustment Display and Contents
Setting value is increased and decreased with the right-arrow and left-arrow buttons. Left  arrow : Decrease, right : Increase
Adjust the setting value to minimize the flicker on the screen.
Execute the adjustment by 6 patterns below.
The pattern (adjustment display) is switched with the up-arrow "and down-arrow  buttons.UP arrow : Forward direction, Down arrow: Reverse direction.
There are 6 patterns of "DESK setting (red)", "DESK setting (blue)", "DESK setting (green)", "CEILING setting (red)", CEILING setting (blue)" and "CEILING setting (green)".
The setting value is saved into this projector when the pattern is switched.
Canceling the flicker adjustment mode
Press "MENU" button on the main unit or remote control unit.
Note: When "MENU" button is pressed, the setting value at that time is saved into this projector and the adjustment mode is canceled.
Pin Layout and Signal Names for SERIAL Connector
Pin No
Signal Name
Contents
3
RXD
Receive data
4
GND
Ground
5
TXD
Transmit data
1
---
Connected internally
2
---
6
---
7
---
NC
8
---
NC
Flicker Adjustment
B Signal Adj:
Sets the test signal mode to the B-signal and allows the " UP", " DOWN " and "OK" buttons of the B-signal to becomes active.
R Signal Adj:
Sets the test signal mode to the R-signal and allows the " UP", " DOWN " and "OK" buttons of the R-signal to becomes active.
G Signal Adj:
Sets the test signal mode to the G-signal and allows the " UP", " DOWN " and "OK" buttons of the G-signal to becomes active.
or
Changes the setting value and transmits its data. (The 8 and 2 keys on the keyboard have the same functions.) I releasing the mouse or key after pressing it continuously, the data is transmitted once. The variable setting value is enclosed in a box and using the TAB or SPACE key allows the move of the box.
OK:
Determines the setting value and stores its data in the EEPROM. (The ENTER key on the keyboard has the same function.) The item having two or more kinds of setting values is processed two or more items. Clicking this button or pressing ENTER key changes the color of the text "OK" to cyan (light blue). If changing the setting value using the "UP", " DOWN " button or the 8 or 2 key, its color returns to black.
Stop:
Discontinues the communication. (This button is usually set for its inactive mode.)
Undo:
Returns the setting value to its original state and transmits its data. The color of the text "OK" returns to black.
Close:
Closes this menu.
Equipment to be used
PC, Software for Adjustment
Adjustment Procedure
1. Display Flicker Adjustment menu.
2. Click "B Signal Adj," and the blue flicker adjustment pattern will be displayed.
3. Minimize the flicker while observing the projected pattern.
4. Click "R Signal Adj," and the red flicker adjustment pattern will be displayed.
5. Minimize the flicker while observing the projected pattern.
6. Click "G Signal Adj," and the green flicker adjustment pattern will be displayed.
7. Minimize the flicker while observing the projected pattern.
Posted By: FRANK at 04:20
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