DOWNLOAD Panasonic TX-P42U20B / TX-P42U20E / TX-PR42U20 Service Manual ↓ Size: 13.66 MB | Pages: 117 in PDF or view online for FREE

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Picture can be reversed left and right or up and down.
00 : Default (Normal picture is displayed)
01 : Picture is reversed left and right.
02 : Picture is reversed up and down.

Hint : If the defective symptom (e.g. Vertical bar or Horizontal bar) is moved by selection of this mirror, the possible cause is in 
A-board. 

1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.

SOS History (Number of LED blinking) indication.
From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication will be cleared by [Self-check indication and forced to factory shipment setting].

Note : To display TIME/COUNT menu, highlight position, then press MUTE for 3sec.
Time : Cumulative power on time, indicated hour : minute by decimal
On/Off : Number of On/Off switching by decimal
Note : This indication will not be cleared by either of the self-checks or any other command.

1. Disconnect the AC cord from wall outlet or switch off the power with [ Power ] button on the main unit.

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1. Purpose

Restrict a function for hotels.

2. Access command to the Hotel mode setup menu

In order to display the Hotel mode setup menu, please
enter the following command (within 2 second).
[TV] : Vol. [Down] + [REMOTE] : AV (3 times) 

Then, the Hotel mode setup menu is displayed.

3. To exit the Hotel mode setup menu 

Disconnect AC power cord from wall outlet.

4. Explain the Hotel mode setup menu

item

Function

Hotel Mode

Select hotel mode ON/OFF

Initial INPUT

Select input signal modes.
Set the input, when each time power is switched
on.
Selection :
Off/DVB-C/DVB-T/Analog/AV1/AV2/AV2S/AV3/
COMPONENT/HDMI1/HDMI2

• Off: give priority to a last memory. However,

Euro model is compulsorily set to TV.

• AVnS/AVnC: only Euro model selectable
• PC: selectable with VGA option

Initial POS

Select programme number.
Selection :
 Off/0 to 99

• Off: give priority to a last memory

Initial VOL level

Adjust  the  volume when each time power is
switched on.
Selection/Range :
Off/0 to 100

• Off: give priority to a last memory

Maximum VOL 
level

Adjust maximum volume.
Range : 
 0 to 100

Button lock

Select local key conditions.
Selection : 
 Off/SETUP/MENU/ALL

• Off: altogether valid
• SETUP: only F-key is invalid

(Tuning guide(menu) can not be selected.)

• MENU: only F-key is invalid

(only Volume/Mute can be selected.)

• ALL: altogether invalid.

Remote lock

Select remote control key conditions.
Selection :
 Off/SETUP/MENU

• Off: altogether valid
• SETUP: only Setup menu is invalid
• MENU: Picture/Sound/Setup menu are invalid

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When exchanging A-board, the data in original A-board can be copied to SD card and then copy to new A-board.

When installing a number of units in hotel or any facility, the data in master TV can be copied to SD card and then copy to other
TVs.

Make pwd file as startup file for (a) or (b) in a empty SD card.

1. Insert a empty SD card to your PC.
2. Right-click a blank area in a SD card window, point to New, and then click text document. A new file is created by default 

(New Text Document.txt).

3. Right-click the new text document that you just created and select rename, and then change the name and extension of the

file to the following file name for (a) or (b) and press ENTER.

(a) For Board replacement : boardreplace.pwd
(b) For Hotel : hotel.pwd 

Please make only one file to prevent the operation error.
No any other file should not be in SD card.

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1. Turn on the TV set.
2. Insert SD card with a startup file (pwd file) to SD slot.

On-screen Display will be appeared according to the startup file automatically.

3. Input a following password for (a) or (b) by using remote control.

(a) For Board replacement : 2770
(b) For Hotel : 4850

Data will be copied from TV set to SD card.
It takes around 2 to 6 minutes maximum for copying.

4. After the completion of copying to SD card, remove SD card from TV set. 
5. Turn off the TV set.

Following new folder will be created in SD card for data from TV set.

(a) For Board replacement : user_setup
(b) For Hotel : hotel