Specifications
Service Modes, Error Codes, and Fault Finding
EN 15L05U AA 5.
5.5.3 Error Codes
In case of non-intermittent faults, write down the errors present
in the error buffer and clear the error buffer before you begin
the repair. This ensures 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
and not the actual cause of the problem (for example, a fault in
the protection detection circuitry can also lead to a protection).
Table 5-2 Error code overview
5.6 The Blinking LED Procedure
Using this procedure, you can make the contents of the error
buffer visible via the front LED. This is especially useful when
there is no picture.
When the SDM is entered, the front LED will blink the contents
of the error-buffer:
• When all the error-codes are displayed, the sequence
finishes with a LED blink of 1.5 seconds,
• The sequence starts again.
Example of error buffer: 12 9 6 0 0
After entering SDM, the following occurs:
• 1 long blink of 5 seconds to start the sequence,
• 12 short blinks followed by a pause of 1.5 seconds,
• 9 short blinks followed by a pause of 1.5 seconds,
• 6 short blinks followed by a pause of 1.5 seconds,
• 1 long blink of 1.5 seconds to finish the sequence,
• The sequence starts again at 12 short blinks.
5.7 Protections
If a fault situation is detected, an error code will be generated;
and, if necessary, the television set will go into protection
mode. Blinking of the red LED at a frequency of 3 Hz indicates
the protection mode. In some error cases, the microprocessor
does not put the set in protection mode. The error codes of the
error buffer and the blinking LED procedure can be read via the
Service Default Menu (SDM), or via ComPair.
To get a quick diagnosis the chassis has three service modes
implemented:
• The Customer Service Mode (CSM).
• The Service Default Mode (SDM).
• The Service Alignment Mode (SAM).
For a detailed mode description, see the relevant sections.
5.8 Fault Finding and Repair Tips
Notes:
• It is assumed that the components are mounted correctly
with correct values and no bad solder joints.
• Before any fault finding actions, check if the correct options
are set.
5.8.1 NVM Editor
In some cases, it can be handy if one directly can change the
NVM contents. This can be done with the “NVM Editor” in SAM
mode. In the next table, the default NVM values are given.
Error Device Error description Check item Diagram
0 Not applicable No Error
1 Not applicable X-Ray/Over-voltage protection (US only) 2411, 2412, 2413, 6404, 6411, 6412 A2
2 Not applicable High beam (BCI) protection 3412, 7405 A2
3 Not applicable Vertical guard protection 3466, 7451 A2
4 Not applicable - --
5 Not applicable +5v protection 7604, 7605 A5
6 I2C bus General I2C error 7200, 3207, 3214 A4
7 Not applicable - --
8 Not applicable - --
9 24C16 I2C error while communicating with the EEPROM 7601, 3604, 3605 A5
10 Tuner I2C error while communicating with the PLL tuner 1000, 5001 A3
11 TDA6107/A Black current loop instability protection 7330, 3351, CRT B1
12 Not applicable - --
13 Not applicable - --
14 Not applicable - --
15 Not applicable - --
16 Not applicable - --
17 Not applicable - --
18 Not applicable - --
19 TDA1200x I2C error while communicating with sound decoder in Hercules IC 7200 A4
20 TDA1200x I2C error while communicating with video cosmic in Hercules IC 7200 A4
21 DPTVSVP I2C error while communicating with the 3D Processor 7201, 3223, 3224 T1
22 TDA9332 I2C error while communicating with the HOP 7221, 3244, 3629, 7226, 7227 T5
23 SAA5565 I2C error while communicating with the Painter uProcessor 7206, 3254, 3256 T2
24 AD9883 I2C error while communicating with the ADC 7210, 3268, 3270 T3
25 Not applicable No communication possible with Trident module - T
26 SII9993 I2C error while communicating with the HDMI receiver 7002, 3016, 3019 M1
L05U_AA_312278515051.book Page 15 Friday, March 4, 2005 10:42 AM