Philips 32PF9968/10 Service Manual page 32

更多难得资料请到江南家电维修论坛免费下载！
http://bbs.520101.com
EN 32 5. Q523.1U LA
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:
Table 5-2 Error code overview
Error Description
2
3 I C3
5 PNX85xx doesn't boot
6 5V, 12V supply
8 1V2, 1V4, 2V5, 3V3 supply
9 Supply fault
2
11 I C-MUX1
2
12 I C-MUX2
23 HDMI multiplexer
2
24 I C switch
26 Master IF
28 MOP FPGA 1080P
34 Tuner
37 Channel decoder
46 Pacific
53 PNX 8535 doesn't boot (SW cause) E
63 Power OK
65 DFI
Extra Information
• Rebooting. When a TV is constantly rebooting 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.
2
• Error 3 (I C bus 3 blocked). At the time of release of this
manual, this error was not working as expected (error 3 is
logged and can be read out). Current situation: when this
error occurs the TV will constantly reboot due to the
blocked bus. The best way for further diagnosis here, is to
use ComPair(e.g. read out the NVM content). Instead of
error "3" it's possible you will see error "2" in the error
buffer.
• Error 5 (PNX85xx doesn't boot). This error will point to a
severe hardware problem around the PNX85xx(supplies
not OK, PNX 8535 completely dead, I
and Stand-by Processor broken, etc...).When error 5
occurs it is also possible that I
2
I C2 can be indicated as the following in the schematics:
SCL-UP-MIPS, SDA-UP-MIPS, SCL-SLAVE, SDA-
SLAVE, SCL-2 or SDA-2.
2
• Error 11 (I C MUX1). Indicates a blocked (short-circuited)
2
I C-MUX1 bus. At the time of release of this manual, this
error was not working as expected. Current situation: when
this error occurs the TV will constantly reboot due to the
blocked bus. The best way for further diagnosis here, is to
use ComPair (e.g. read out the NVM content).
2
• Error 12 (I C MUX2). Indicates a blocked (short circuited)
2
I C-MUX2 bus. At the time of release of this manual, this
error was not working as expected. Current situation: when
this error occurs the TV will constantly reboot due to the
Service Modes, Error Codes, and Fault Finding
Error/Prot Detected by
E MIPS
E Stby P
P Stby P
P Stby P
P Stby P
E MIPS
E MIPS
E MIPS
E MIPS
E MIPS
E MIPS
E MIPS
E MIPS
E MIPS
Stby P
P MIPS
E MIPS
2
C link between PNX
2
C2 bus is blocked (NVM).
• Via error bits in the status registers of ICs.
• Via polling on I/O pins going to the stand-by processor.
• Via sensing of analog values on the stand-by processor or
the PNX85xx.
• Via a "not acknowledge" of an I
Take notice that some errors need more than 90 seconds
before they start blinking or before they will be logged. So in
case of problems wait 2 minutes from start-up onwards, and
then check if the front LED is blinking or if an error is logged.
Device Result
PNX85xx Error logged
PNX85xx Error blinking
/ Protection + Error blinking
/ Protection + Error blinking
/ Protection + Error blinking
PCA9540 Error logged
PCA9540 Error logged
AD8190 Error logged
PCA9540 Error logged
TDA9898/9897/9890 Error logged
EP2CXXF484C7N Error logged
/ Error logged
TDA10060 Error logged
/ Error blinking + Error logged
PNX85xx Error blinking
/ Error logged in case of a PDP set
Protection in case of an LCD set
/ Error blinking + Error logged
blocked bus. The best way for further diagnosis here, is to
use ComPair (e.g. read out the NVM content).
2
• Error 24 (I C switch). Indicates a problem with the I
switch.
• Error 28 (MOP). Here you can activate the SDM/CSM
mode and check for error 28 via the blinking LED
procedure. Otherwise use ComPair for further diagnosis
(e.g. read out the NVM content).
Note that it can takes several minutes before error 28 will
be logged.
• Error 37 (Channel decoder). When this error occurs there
probably will be no picture and sound available, the best
way for further diagnosis is to use ComPair (e.g. read out
the NVM content). As a side effect of error 37 it's possible
that error 4 (no existing error) is also logged.
• Error 46 (Pacific 3). When there is an actual problem with
or around the Pacific during start-up you will have no
picture and error 46 will be blinked via the blinking LED
procedure. For further diagnosis you can always dump the
CSM content on USB stick (see CSM) or use ComPair.
• Error 53. This error will indicate that the PNX85xx 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).
Note that it takes 90 seconds before the TV blinks error 53
in this case.
• Error 63 (POWER OK). When this error occurs, it means
that the POWER-OK line did not became "high". This error
is only applicable for TV's with a LCD display. For PDP
displays there will be no protection during a POWER-OK
line failure, but error 63 will be logged in the error buffer.
Caution: in case a PDP TV ends up into power-ok
protection, it can indicate that the display option code is set
2
C communication
2
C