Service Modes, Error Codes, and Fault Finding
EN 24 Q548.1E LB5.
2009-Dec-18
5.5.2 How to Read the Error Buffer
Use one of the following methods:
• On screen via the SAM (only when a picture is visible).
E.g.:
– 00 00 00 00 00: No errors detected
– 23 00 00 00 00: Error code 23 is the last and only
detected error.
– 37 23 00 00 00: Error code 23 was first detected and
error code 37 is the last detected error.
– Note that no protection errors can be logged in the
error buffer.
• Via the blinking LED procedure. See section 5.5.3 How to
Clear the Error Buffer.
•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
starting to repair (before clearing the buffer, write down the
content, as this history can give 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 PNX8543.
• Via a “not acknowledge” of an I
2
C communication.
Take notice that some errors need several minutes 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 Layer 1 code overview (multi chassis overview)
Table 5-3 Error code overview (multi chassis overview)
LAYER 1 codes
SSB 2
Display supply 3
Platform supply 4 Only for display option 196 and 197
Fan 7
AmbiLight or DC/DC or 3D LED dim panel 8
Description
LAYER 1 error
LAYER 2 error
Monitored
Medium
Error/Prot.
EB: in Error Buffer
BL: Blinking LED
Device
Defective board
Special Remarks
Main NVM 2 0 MIPS I
2
C1 E x STM24C128 SSB TV shut down with red LED blinking 2.
Temp. protection 3 12 MIPS I
2
C4 P BL/EB Supply
I
2
C3213MIPSI
2
C3 E BL/EB SSB SSB
TV is rebooting endlessly with red LED blinking “2”.
I
2
C2214MIPSI
2
C2 E BL/EB SSB SSB
PNX does not boot (HW cause)
PNX 5100 does not boot
215St-by µP I
2
C1 P BL SSB SSB
TV is rebooting endlessly with red LED blinking “2”
12V 3 16 St-by µP I/O P BL Supply
TV shut down with red LED blinking “3”.
12V 3 16 St-by µP I/O P BL Platform Supply
Inverter or display supply 3 17 Mips I/O E EB Supply
TV still in normal operation mode, but without backlights.
Enter CSM Layer 1 red LED blinking “3”.
Only for display option 196 and 197 4 17 Mips I/O E EB Display Supply
1V2, 1V2, 3V3, 5V to low 2 18 St-by µP I/O P BL SSB
TV shut down with red LED blinking “2”.
PNX 5100 2 21 MIPS I
2
C3 E EB PNX 5100 SSB
TV is rebooting endlessly, with red LED blinking “2” (shown
every 20 second).
HDMI MUX 2 23 MIPS I
2
C3 E EB TDA9996 SSB
Activate CSM red LED blinking “2”.
I
2
C switch 2 24 Mips I
2
C2 E EB PCA9540 SSB
Boot-NVM PNX5120 2 25 MIPS
I
2
C3 E EB STM24C08 SSB
TV is rebooting endlessly, with red LED blinking “2” (shown
every minute).
Multi Standard demodulator (Micronas IF) 2 27 MIPS I
2
C3 E EB DRX3616K
DRX3626K
SSB
TV is in normal operation but without video displayed (RF).
ARM (AL) 8 28 MIPS
I
2
C3 E EB NXP LPC2103 AL mod. or DC/DC
TV is in normal operation but without AMBILIGHT “on”.
FPGA (Local contrast) 2 29 MIPS
I
2
C3 E EB Altera SSB
Tuner1 2 34 MIPS I
2
C3 E EB UV1783S
HD1816
SSB
TV is in normal operation but without video displayed (RF).
FAN I
2
C expander 7 41 MIPS I
2
C2 E EB PCA 9533 FAN mod.
T× sensor 7 42 MIPS I
2
C2 E EB LM 75 T×sensor
FAN 1 7 43 MIPS
I
2
C2EEB FAN
FAN 2 7 44 MIPS
I
2
C2EEB FAN
MIPS does not boot (SW cause) 2 53 St-by µP I
2
C1 P BL PNX8543 SSB TV is rebooting endlessly with white LED blinking.
Display 5 64 MIPS
I
2
C2 E BL/EB Altera Display
FPGA LED dim 2D 2 65 MIPS
I
2
C3 E EB Xilinx SSB
FPGA LED dim 3D 8 65 MIPS I
2
C2 E EB Altera SSB
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