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5. Service Modes, Error Codes, and Fault Finding
Index of this chapter:
5.1 Test Points
5.2 Service Modes
5.3 Service Tools
5.4 Error Codes
5.5 The Blinking LED Procedure
5.6 Protections
5.7 Fault Finding and Repair Tips
5.8 Software Upgrading
5.1
Test Points
As most signals are digital, it will be difficult to measure
waveforms with a standard oscilloscope. However, several key
ICs are capable of generating test patterns, which can be
controlled via ComPair. In this way it is possible to determine
which part is defective.
Perform measurements under the following conditions:
•
Service Default Mode.
•
Video: Colour bar signal.
•
Audio: 1 kHz L/R.
5.2
Service Modes
Service Alignment Mode (SAM) offers several features for the
service technician, while the Customer Service Mode (CSM) is
used for communication between the call centre and the
customer.
This chassis also offers the option of using ComPair, a
hardware interface between a computer and the TV chassis. It
offers the abilities of structured troubleshooting, error code
reading, and software version read-out for all chassis.
(see also section
"5.3.1
5.2.1
Service Alignment Mode (SAM)
Purpose
•
To perform (software) alignments.
•
To change option settings.
•
To easily identify the used software version.
•
To view operation hours.
•
To display (or clear) the error code buffer.
How to Activate SAM
Via a standard RC transmitter: key in the code "062596"
directly followed by the "INFO" button.
Contents of SAM:
•
Brand. Displays the customer name.
•
Ver. Displays the software version of the main software.
•
Date. Displays the software release date.
•
Model Name. Displays the customer model name.
•
Scaler. Displays the scaler type.
•
Panel Type. Displays the panel type.
•
Current Source. Displays the current input source, when
it be changed, the value of the ADC and Color Temp will be
changed.
•
Auto color. it only be valid for the input source which need
to auto calibration.
•
Color Temp. Displays the current color temp.
•
Burn in. put on or off the burn in mode.
•
EEPROM Init. Initialize all of EEPROM, including ADC
white balance Backlight and language, and set burn in on.
•
Backlight Time. Displays the accumulated total of
operation hours (not the stand-by hours). Every time the
TV is switched "on/off", 0.5 hours is added to this number.
•
Error Code. Display the lastest 5 error code status.
Service Modes, Error Codes, and Fault Finding
ComPair").
TPS2.1E LA
•
Clear Error Code. Reset CSM error code to 0.
•
Reset PBS Setting. Reset PBS menu setting of ITV to
default.
•
Virgin Mode. Reset picture and sound settings to default.
Virgin Mode can also press "MENU", and then key in the
code "1990" followed by the "OK" button via the standard
RC transmitter.
•
ACI. Automatic Channel Installation (only for EU model).
•
ATS. Automatic Tuning System (only for EU model).
•
Exit. Exit the SAM mode.
How to Navigate
•
In SAM, the menu items can be selected with the
"CURSOR UP/DOWN" key on the RC-transmitter. The
selected item will be highlighted. When not all menu items
fit on the screen, move the "CURSOR UP/DOWN" key to
display the next/previous menu items.
•
With the "CURSOR LEFT/RIGHT" keys, it is possible to:
–
(De) activate the selected menu item.
–
(De) activate the selected sub menu.
•
With the "OK" key, it is possible to activate the selected
action.
How to Exit SAM
Press "Power " button on the RC-transmitter.
5.2.2
Customer Service Mode (CSM)
Purpose
When a customer is having problems with his TV-set, he can
call his dealer or the Customer Helpdesk. The service
technician can then ask the customer to activate the CSM, in
order to identify the status of the set. Now, the service
technician can judge the severity of the complaint. In many
cases, he can advise the customer how to solve the problem,
or he can decide if it is necessary to visit the customer.
The CSM is a read only mode; therefore, modifications in this
mode are not possible.
When in this chassis CSM is activated, a testpattern will be
displayed during 5 seconds (1 second Blue, 1 second Green
and 1 second Red, then again 1 second Blue and 1 second
Green). This test pattern is generated by the pacific 3. So if this
test pattern is shown, it could be determined that the back end
video chain (LVDS and Display) is working.
When CSM is activated and there is a USB stick connected to
the TV, the software will dump the complete CSM content to the
USB stick. The file (Csm.txt) will be saved in the root of the USB
stick. This info can be handy if no information is displayed.
Also when CSM is activated, the layer 1 error is displayed via
blinking LED. Only the latest error is displayed. (see also
section
"5.4 Error
Codes").
How to Activate CSM
Key in the code "123654" via the standard RC transmitter.
Note: Activation of the CSM is only possible if there is no (user)
menu on the screen!
How to Navigate
By means of the "CURSOR-DOWN/UP" knob (or the scroll
wheel) on the RC-transmitter, can be navigated through the
menus.
Contents of CSM
The contents are reduced to 3 pages: General, Software
versions and Quality items. The group names itself are not
shown anywhere in the CSM menu.
5.
EN 13
2009-Apr-10
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