Philips 37PF9631D/37, Руководство по обслуживанию

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Service Modes, Error Codes, and Fault Finding EN 27 EJ2.0U LA 5.
Extra Info
• Rebooting. When a TV is rebooting constantly due to
internal problems, most of the time no errors will be logged
or blinked. This rebooting can be recognized via a ComPair
interface and Hyperterminal (for Hyperterminal settings,
see paragraph “Stand-by software upgrade”). You will see
that the loggings which are generated by the main software
keep continuing. In this case (rebooting) diagnose has to
be done via ComPair.
• Error 1 (I
2
C bus 1 blocked). When this error occurs, the
TV will go to protection and the front LED will blink error 1.
Now you can partially restart the TV via the SDM shortcut
pins on the SSB. Depending on the software version it is
possible that this error will not work correct: in some
software versions error 34 was blinking in stead of error 1.
• Error 2 (I
2
C bus 2 blocked). When this error occurs, the
TV will go to protection and the front LED will blink error 2.
Now you can partially restart the TV via the SDM shortcut
pins on the SSB. Due to hardware restriction (I
2
C bus 2 is
the fast I
2
C bus) it will be impossible to start up the VIPER.
When this error occurs, the TV will probably keep
rebooting. Further diagnose has to be done via ComPair.
• Error 3 (I
2
C bus 3 blocked). There are only three devices
on I
2
C bus 3: VIPER, Stand-by Processor, and NVM. The
Stand-by Processor is the detection device of this error, so
this error will only occur if the VIPER or the NVM is blocking
the bus. This error will also blink when the NVM gives no
acknowledge on the I
2
C bus (see error 44). Note that if the
12 V supply is missing, the DC/DC supply on the SSB will
not work. Therefore the VIPER will not get supplies and
could block I
2
C bus 3. So, a missing 12 V can also lead to
an error 3.
• Error 4 (I
2
C bus 4 blocked). When this error occurs, the
TV will go to protection and the front led will blink error 4.
Now you can start up the TV via the SDM short-cut pins on
the SSB. The TV will start up and ignore the error.
Depending on the problem it is even possible that you have
picture.
• Error 5 (Viper does not boot). This error will point to a
severe hardware problem around the VIPER (supplies not
OK, VIPER completely dead, I
2
C link between VIPER and
Stand-by Processor broken, etc....).
• Error 12 (12 V error). Except a physical problem with the
12 V itself, it is also possible that there is something wrong
with the Audio DC Protection: see paragraph "Hardware
Protections" for this.
• Error 14 (Audio supply). This error is triggered in case of
DC voltage on the speakers or an overvoltage or a too big
voltage difference between the positive and negative audio
supply.
The mechanism for this error works as follows: when a
problem is detected, the audio-protection line will switch off
the main supply, the stand-by processor will “think” there is
a voltage drop and will start up the TV again. At the
beginning of the start up process the stand-by processor
will detect that the audio-protection line is still “active” and
will switch the TV to stand-by and blink error 14.
Note that for 26-inch models there no possibility to switch
off the main supply directly by the audio-protection line.
• Error 16 (MPIF1 main supply). This error is no longer
valid. See error 32.
• Error 17 (MPIF1 audio supply). This error is no longer
valid. See error 32.
• Error 27 (PNX2015 HD subsystem part). Diagnosing this
error will not be possible via the normal errorcodes. In case
this device can not communicate with the Viper via I
2
C, it
will not be possible to initialize the tunnelbus. Hence the
software will not be able to start up, and will reboot
constantly. Diagnosing these problems will only be
possible via ComPair. In theory it is possible that this error
is still logged in the NVM. That’s why it is still mentioned
here.
• Error 29 (AVIP1). Same remark as for error 27.
• Error 31 (AVIP2). Same remark as for error 27.
• Error 32 (MPIF1). Together with error 32, you will probably
see error 16 and 17. These errors are no longer valid.
• Error 34 (Tuner 1). When this error is logged, it is not sure
that there is something wrong with the tuner itself. It is also
possible that there is something wrong with the
communication between channel decoder and tuner. See
schematic B2B.
• Error 37 (Channel decoder). This error will always log
error 34 (tuner) extra. This is due to the fact that the tuner
I
2
C bus is coming from the channel decoder.
• Error 44 (NVM). This error will never occur because it is
masked by error 3 (I
2
C bus 3). The detection mechanism
for error 3 checks on an I
2
C acknowledge of the NVM. If
NVM gives no acknowledge, the stand-by software
assumes that the bus is blocked, the TV goes to protection
and error 3 will be blinking.
• Error 53. This error will indicate that the VIPER has started
to function (by reading his boot script, if this would have
failed, error 5 would blink) but initialization was never
completed because of hardware peripheral problems
(NAND flash,...) or software initialization problems.
Possible cause could be that there is no valid software
loaded (try to upgrade to the latest main software version).
5.6 The Blinking LED Procedure
5.6.1 Introduction
The blinking LED procedure can be split up into two situations:
•
Blinking LED procedure in case of a protection. In this case
the error is automatically blinked. This will be only one
error, namely the one that is causing the protection.
Therefore, you do not have to do anything special, just read
out the blinks. A long blink indicates the decimal digit, a
short blink indicates the units.
• Blinking LED procedure in the “on” state. Via this
procedure, you can make the contents of the error buffer
visible via the front LED. This is especially useful for fault
finding, when there is no picture.
When the blinking LED procedure is activated in the “on” state,
the front LED will show (blink) the contents of the error-buffer.
Error-codes > 10 are shown as follows:
1.
“n” long blinks (where “n” = 1 - 9) indicating decimal digit,
2. A pause of 1.5 s,
3. “n” short blinks (where “n”= 1 - 9),
4. A pause of approx. 3 s.
5. When all the error-codes are displayed, the sequence
finishes with a LED blink of 3 s,
6. The sequence starts again.
Example: Error 12 9 6 0 0.
After activation of the SDM, the front LED will show:
1.
1 long blink of 750 ms (which is an indication of the decimal
digit) followed by a pause of 1.5 s,
2. 2 short blinks of 250 ms followed by a pause of 3 s,
3. 9 short blinks followed by a pause of 3 s,
4. 6 short blinks followed by a pause of 3 s,
5. 1 long blink of 3 s to finish the sequence,
6. The sequence starts again.
5.6.2 How to Activate
Use one of the following methods:
•
Activate the SDM. The blinking front LED will show the
entire contents of the error buffer (this works in “normal
operation” mode).
• Transmit the commands “MUTE” - “062500” - “OK”
with a normal RC.
The complete error buffer is shown.
Take notice that it takes some seconds before the blinking
LED starts.
• T ransmit the commands “MUTE” - “06250x” - “OK”
with a normal RC (where “x” is a number between 1 and