Panasonic TX-40CX670E / TX-40CX680E / TX-40CXR700 (serv.man2) Service Manual ▷ View online
17
6.7.4.
Data copy from USB Memory to TV set
1. Turn on the TV set.
2. Insert USB Memory with Data to USB terminal.
2. Insert USB Memory with Data to USB terminal.
On-screen Display will be appeared according to the Data folder automatically.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement : 2771
(b) For Hotel : 4851
(b) For Hotel : 4851
Data will be copied from USB Memory to TV set.
4. After the completion of copying to USB Memory, remove USB Memory from TV set.
(a) For Board replacement : Data will be deleted after copying (Limited one copy).
(b) For Hotel : Data will not be deleted and can be used for other TVs.
(b) For Hotel : Data will not be deleted and can be used for other TVs.
5. Turn off the TV set.
Note:
1. Depending on the failure of boards, function of Data copy for board replacement does not work.
2. This function can be effective among the same model numbers.
2. This function can be effective among the same model numbers.
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7 Troubleshooting Guide
Use the self-check function to test the unit.
1. Checking the IIC bus lines
2. Power LED Blinking timing
2. Power LED Blinking timing
7.1.
Check of the IIC bus lines
7.1.1.
How to access
7.1.1.1.
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [BLUE] button on the remote
control for more than 3 seconds.
control for more than 3 seconds.
7.1.1.2.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote
control for more than 3 seconds.
control for more than 3 seconds.
7.1.2.
Screen display
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7.1.3.
Check Point
Confirm the following parts if NG was displayed.
7.1.4.
Exit
Disconnect the AC cord from wall outlet or press the [POWER] button on the main unit for 3 seconds to turn off and then turn on
automatically.
automatically.
DISPLAY
Check Ref. No.
Description
Check Point
H14TUN
TU6704
TUNER
A-BOARD
H38FRC
IC9000
FRC
A-BOARD
H07TEMP
IC2250
TEMP SENSOR
A-BOARD
H17LAN
ETHERNET
A-BOARD / LAN
H00FE
IC6800
DEMODULATOR
A-BOARD
H96ID
ID
A-BOARD
H97ID2
ID2
A-BOARD
H42WiFi
WiFi
A-BOARD / WiFi
H80HDMISW1 IC4500
HDMI2.0 Rx
A-BOARD
20
7.2.
Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the
defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.
defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.
7.3.
LCD Panel test mode
Purpose:
To find the possible failure point where in LCD Panel or Printed Circuit Board when the abnormal picture is displayed.
How to Enter:
While pressing [VOLUME ( - )] button of the main unit, press [YELLOW] button of the remote control three times within 2
seconds.
seconds.
How to Exit:
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
How to confirm:
If the abnormal picture is displayed, go into LCD Panel test mode to display the several test patterns.
And then, judge by the following method.
Still abnormal picture is displayed: The cause must be in LCD Panel.
Normal picture is displayed: The cause must be in A board.
And then, judge by the following method.
Still abnormal picture is displayed: The cause must be in LCD Panel.
Normal picture is displayed: The cause must be in A board.
Remarks:
The test pattern is created by the circuit in LCD Panel.
In LCD Panel test mode, this test pattern is displayed unaffected by signal processing for RF or input signal.
If the normal picture is displayed, LCD Panel must be okay and the cause of failure must be in A board.
In LCD Panel test mode, this test pattern is displayed unaffected by signal processing for RF or input signal.
If the normal picture is displayed, LCD Panel must be okay and the cause of failure must be in A board.
Blinking Times
Contents
Check point
1
BL SOS
LCD PANEL
P-Board
LDP-Board
7
SUB 3.3V / 1.0V
P-Board
A-Board
A-Board
9
SOUND SOS
A-Board
Speaker
Speaker
10
NVT SOS
A-Board
13
EMERGENCY SOS
A-Board
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