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EN 30
5.
Q522.1E LB
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 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.
Table 5-2 Error code overview
Error Description
Error/
Prot
2
3
I
C3
E
5
PNX85xx does
E
not boot (HW
cause)
6
5V, 12V supply
P
8
1V2, 1V4, 2V5,
P
3V3 supply
9
Supply fault
P
2
11
I
C-MUX1
E
2
12
I
C-MUX2
E
23
HDMI mux
E
2
24
I
C switch
E
26
Master IF
E
34
Tuner
E
37
Channel decoder E
53
PNX85xx does
E
not boot (SW
cause)
63
Power OK
E/P
Note
1). Where applicable.
Extra Info
•
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). 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 is possible you
will see error "2" in the error buffer.
•
Error 5 (PNX85xx doesn't boot). When this error occurs,
the TV main processor was not able to read his bootscript.
This error will point to a hardware problem around the
PNX85xx (supplies not OK, PNX85xx completely dead, I
link between PNX and Stand-by processor broken, etc...).
When error 5 occurs it is also possible that I
2
blocked (NVM), I
C2 can be indicated in the schematics as
follows: SCL UP-MIPS, SDA-UP-MIPS, SCL-SLAVE,
SDA-SLAVE, SCL-2 or SDA-2.
•
Error 6 (5 V, 12 V supply). When this error occurs, the TV
set shuts down in protection mode and follows with the
error blinking. This error points to a hardware problem
around the DC/DC converter (diagram B02C). Probably the
+5V supply line is under voltage because the "PROT-DC"
Service Modes, Error Codes, and Fault Finding
2
C communication.
Detected
Device
Result
by
MIPS
PNX85xx
Error logged.
Stby P
PNX85xx
Error blinking.
Stby P
/
Protection + Error
blinking.
Stby P
/
Protection + Error
blinking.
Stby P
/
Protection + Error
blinking.
MIPS
PCA9540
Error logged.
MIPS
PCA9540
Error logged.
MIPS
AD8190/
Error logged.
AD8191/
AD8197
MIPS
PCA9540
Error logged.
MIPS
TDA9898/
Error logged.
9897/9890
MIPS
TD1716
Error logged.
MIPS
TDA10060/
Error logged.
TDA10048
Stby P
PNX85xx
Error blinking.
MIPS
/
Protection + Error
blinking.
2
C2 bus is
line is activated. Otherwise, the +12V supply line is under
voltage because "DETECT2" line (diagram B04A) is
activated.
•
Error 8 (1V2, 3V3 Supply). When this error occurs, the TV
shuts down in protection mode and follows with the error
blinking. This error points to a hardware problem around
the DC/DC converter, i.e. the 3V3-STANDBY or 1V2-
STANDBY converters. They could be under voltage
because the "DETECT1" line (diagram B04A) is activated.
•
Error 9 (Supply fault). When this error occurs, the TV
shuts down and follows with the error blinking. This error
points to a hardware problem around the DC/DC 3V3-1V2
converter (diagram B02A). Probably the Class D amplifier
output causes the "SUPPLY FAULT" line (diagram B10A)
to be activated.
•
Error 11 (I
constantly reboot due to the blocked bus. The best way for
further diagnosis, is to use ComPair (e.g. read out the NVM
content). This error will point to a hardware problem around
the PNX85xx: CONTROL_MIPS (diagram B04E).
Probably there is a PCA9540 I
error.
•
Error 12 (I
constantly reboot due to the blocked bus. The best way for
further diagnosis, is to use ComPair (e.g. read out the NVM
content). This error will point to a hardware problem around
the PNX85xx: CONTROL_MIPS (diagram B04E).
Probably there is a PCA9540 I
error.
•
Error 23 (HDMI mux). When this error occurs it means that
there is a problem with the I
HDMI MUX IC AD8197 (diagram B08C). This error will
point to a hardware problem around the Digi I/O HDMI
MUX (diagram B08C). It is possible you will see error 23
logged in the error buffer. The best way for further
diagnosis, is to use ComPair (e.g. read out the NVM
content).
•
Error 24 (I
possible that error 47 (no existing error) will also be logged.
•
Error 26 (Master IF). When this error occurs, it means that
there is a problem with I
MASTER IF TDA9898. It is possible that there will be no
picture and sound from the tuner input. This error will point
to a hardware problem around the main tuner (diagram
B03A) IF processing IC. It is possible that you see error
"26" logged in the error buffer.
•
Error 34 (Tuner). When this error occurs, it means that
there is a problem with the I
tuner (item no. 1716). It is likely that there will be no sound
and picture from the tuner input. This error points to a
hardware problem around the main tuner (diagram B03A).
As side effect, it is possible that next to error 34, also error
24 (no existing error) will be logged.
•
Error 37 (Channel decoder). When this error occurs,
there probably will be no picture and sound from tuner
input. As a side effect of error 37 it is possible that error 4
(no existing error) is also logged.
•
Error 53. This error will indicate that the PNX85xx has read
his bootscript (if this would have failed, error 5 would blink)
but initialization was never completed because of hardware
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 can take up to 2 minutes before the TV
2
C
starts blinking error 53.
•
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 an 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
to "LCD". To change the display option code to "PDP" you
need to activate SDM via the service pads (see figure
"Service mode pads"). Then change the display option
2
C MUX1). When this error occurs, the TV will
2
C MUX1 communication
2
C MUX2). When this error occurs, the TV will
2
C MUX2 communication
2
C communication towards the
2
C switch). As a side effect of error 24 it is
2
C communication towards the
2
C communication towards the
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