Panasonic TH-50BF1U / TH-50BF1W / TH-50BF1E Service Manual ▷ View online
INF-5
SECTION 1 SERVICE INFORMATION
<50BF1>
2. Notes on Service
2.1. Before service operation
2.1.1. LCD panel module
1. Although an LCD panel module is a product of high-precision technology, some of the pixels on the image may be missing
or constantly lit. Please note that this is not a failure.
2. Displaying a still image for a longer time may result in an after-image on the LCD panels. If this happens, display the all
white screen in the test pattern for an hour or more.
2.2. Service
2.2.1. Supporting Methods
The basic service policy is shown below.
Repair contents
Applied parts
Block replacement
Module replacement
- LCD panel module
- PCB module
Replaced by discrete components
Other electrical parts and mechanism parts
2.2.2. Repair
1. Before repairing, make sure to turn off the main power and disconnect the power plug from the power outlet.
* When replacing the PCB module, the internal electrical parts can be broken by the static electricity of clothes or human
body. Please take care in static electricity, use an antistatic wrist strap or wear the anti-static electricity gloves.
2. After repairing, please check the gradation (10 step or the gray scale) test pattern or moving image.
Also, please check that it is normal on a self check screen.
2.2.3. Replacement of A-Module
1. When replacing A-module due to the defective, adjustment data copy to new A-module is available. Please refer to the
"USB Cloning (Adj.8-9) " in the SECTION3.
2. When A-module is replaced, the MAC address of LAN will be changed. Explain it to the customers in advance.
INF-6
SECTION 1 SERVICE INFORMATION
<50BF1>
3. Service Mode
3.1. How to display CAT mode
n
To display the CAT mode
n
To exit the CAT mode
Turn off the Display with the main switch or remote control unit.
Method A
Main unit + remote control operation
Press and hold the VOL down button on the right side of the unit and press the RECALL button on the remote control 3 times quickly
within 2 second, this will place the unit into the CAT mode.
Method B
Remote control operation only
1. Set the OFF timer except for [0] minute by OFF TIMER button. (30 minutes, 60 minutes, 90 minutes)
2. Set the volume level of sound to 0 by VOL down button / -button.
3. Press the RECALL button more than 3 seconds before a volume display disappears.
Main unit
Remote control
3 times
Button
Press and hold
Right side of the unit
Step 1
Step 2
Step 3
Press the button (3 seconds)
INF-7
SECTION 1 SERVICE INFORMATION
<50BF1>
3.2. Settings and adjustments mode (IIC Mode)
1. Display the CAT mode (Refer to 3.1.).
2. The CAT mode menu appears on the screen. Select the [IIC Mode] menu with [pq] buttons and press the [
n
] ACTION
button to enter the IIC mode.
3. IIC mode structure (following items value is sample data).
CAT Panel sys.8.2
IIC Mode
CD Mode
NW Mode
SD Mode
MS Mode
ID Mode
15
[p q]
[t
u]
INF-8
SECTION 1 SERVICE INFORMATION
<50BF1>
3.3. Software, EEPROM version and failure information (CD Mode)
• This model provides a power failure history function (5 histories) as PTCT information in the CD mode.
• On the self check for a signal system, only one history is displayed (it will disappear after self checking). The PTCT displays
up to 5 histories and they do not disappear even if the self check has been done. You can see the history of power failure
any time.
1. Display the CAT mode (Refer to 3.1.).
2. The CAT mode menu appears on the screen. Select the [CD Mode] menu with [pq] buttons and press the [MUTE] button
for more than 3 seconds to enter the CD mode.
For further information of PTCT failure code, refer to the item [4.2. Self check of power system].
To exit the CD mode
Press the [R] button to return to the CAT mode menu
CAT Panel sys.8.2
IIC Mode
CD Mode
NW Mode
SD Mode
MS Mode
ID Mode
CD
MONITOR-MCU(50inch)
3.0100BF1
OK
MONITOR-EEPROM
51.00 1
BD E9
MONITOR-EEPROM Change Addr
00
01
Data
01
01
MONITOR-FPGA
1.00
MONITOR-FRC
0522
LAN-MCU
1.00/1.01/00
HD-BaseT
30.94.600C
TOUCH PANEL
6.4.0.4
LAN-MAC(WIRED)
20:C6:EB:76:90:D1
LAN-MAC(WIRELESS)
EB:EE:B4:D2:EB:92
SLOT BOARD EEPROM
-- --
-- --
SLOT BOARD --/--/--
-- --
-- --
-- --
SERIAL No.
123456789
PTCT
00. 00. 00. 00. 00.
Firmware version of Main MCU
EEPROM version, Destination code
EEPROM address
EEPROM data
Software version of FPGA
Software version of FRC
Software version of LAN MCU
Software version of HD-BaseT
Touch panel version
MAC address of Wired LAN Interface
MAC address of Wireless LAN Interface
EEPROM information of a SLOT
Kind, version of SLOT BOARD
Serial number
PTCT information(SOS history)
01. 04. 09. 0D. 04.
First failure
Second failure
3rd latest failure
2nd latest failure
Latest failure
Second failure
3rd latest failure
2nd latest failure
Latest failure
About PTCT information
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