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Note: To use the LVDS tool, you must have ComPair release
2004-1 (or later) on your PC (engine version >= 2.2.05).
For every TV type number and screen size, one must choose
the proper settings via ComPair. The ComPair file will be
updated regularly with new introduced chassis information.
How to Order
•
LVDS tool (incl. two LVDS cables: 31p and 20p):
3122 785 90671.
•
LVDS tool Service Manual:
3122 785 00810.
•
LVDS cable 31p/FI -> 31p/FI (for JL2.1 chassis):
3122 785 90861.
•
LVDS cable 30p/DF -> 31p/FI (for LC4.3 chassis):
3122 785 90821.
•
LVDS cable 41p/FI -> 31p/FI (dual -> single LVDS):
3122 785 90831.
•
LVDS cable 20p/DF -> 20p/DF (standard with tool):
3122 785 90731.
•
LVDS cable 31p/FI -> 31p/FI (standard with tool):
3122 785 90662.
•
LVDS cable 20p/DF -> 20p/DF (for LC4.1 chassis):
3122 785 90851.
5.5
Error Codes
5.5.1
Introduction
The error code buffer contains all detected errors since the last
time the buffer was erased. The buffer is written from left to
right, new errors are logged at the left side, and all other errors
shift one position to the right.
When an error occurs, it is added to the list of errors, provided
the list is not full. When an error occurs and the error buffer is
full, then the new error is not added, and the error buffer stays
intact (history is maintained), except when the error is a
protection error.
To prevent that an occasional error stays in the list forever, the
error is removed from the list after more than 50 hrs. of
operation.
When multiple errors occur (errors occurred within a short time
span), there is a high probability that there is some relation
between them.
Basically there are three kinds of errors:
•
Errors detected by the Stand-by Processor. These
errors will always lead to protection and an automatic start
of the blinking LED for the concerned error (see paragraph
"The Blinking LED Procedure"). In these cases SDM can
be used to start up (see chapter "Stepwise Start-up"). Note
that it can take up to 90 seconds before the TV goes to
protection and starts blinking the error (e.g. error 53)
•
Errors detected by VIPER that lead to protection. In this
case the TV will go to protection and the front LED should
also blink the concerned error. Depending on the software
version it is possible that this mechanism does not work.
See also paragraph "Error Codes" -> "Error Buffer" ->
"Extra Info".
•
Errors detected by VIPER that do not lead to
protection. In this case the error will be logged into the
error buffer and can be read out via ComPair, via blinking
LED method, or in case you have picture, via SAM.
5.5.2
How to Read the Error Buffer
Use one of the following methods:
•
On screen via the SAM (only if you have a picture). E.g.:
–
00 00 00 00 00: No errors detected
–
06 00 00 00 00: Error code 6 is the last and only
detected error
–
09 06 00 00 00: Error code 6 was first detected and
error code 9 is the last detected error
Service Modes, Error Codes, and Fault Finding
BJ3.0E PA
•
Via the blinking LED procedure (when you have no
picture). See next paragraph.
•
Via ComPair.
5.5.3
How to Clear the Error Buffer
Use one of the following methods:
•
By activation of the "RESET ERROR BUFFER" command
in the SAM menu.
•
With a normal RC, key in sequence "MUTE" followed by
"062599" and "OK".
•
If the content of the error buffer has not changed for 50+
hours, it resets automatically.
5.5.4
Error Buffer
In case of non-intermittent faults, clear the error buffer before
you begin the repair (before clearing the buffer, write down the
content, as this history can give you significant information).
This to ensure that old error codes are no longer present.
If possible, check the entire contents of the error buffer. In
some situations, an error code is only the result of another error
code and not the actual cause (e.g., a fault in the protection
detection circuitry can also lead to a protection).
There are several mechanisms of error detection:
•
Via error bits in the status registers of ICs.
•
Via polling on I/O pins going to the stand-by processor.
•
Via sensing of analogue values on the stand-by processor
or the Viper.
•
Via a "not acknowledge" of an I
Take notice that some errors need more than 90 seconds
before they start blinking. So in case of problems wait 2
minutes from start-up onwards, and then check if the front LED
is blinking.
5.
EN 37
2
C communication
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