Philips EBJ1.0U, Руководство по обслуживанию

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Service Modes, Error Codes, and Fault Finding EN 21 EBJ1.0U 5.
Basically there are three kinds of errors:
•
Errors detected by the Stand-by Processor. These
errors will always lead to protection and an automatic start
of the blinking LED for the concerned error (see paragraph
“The Blinking LED Procedure”). In these cases SDM can
be used to start up (see chapter “Stepwise Start-up”).
• Errors detected by VIPER that lead to protection. In this
case the TV will go to protection and the front LED will blink
at 3 Hz. Further diagnosis via service modes is not possible
here (see also paragraph “Error Codes” -> “Error Buffer” -
> “Extra Info”).
• Errors detected by VIPER that do not lead to
protection.
In this case the error can be read out via
ComPair, via blinking LED method, or in case you have
picture, via SAM.
5.4.2 How to Read the Error Buffer
Use one of the following methods:
•
On screen via the SAM (only if you have a picture). E.g.:
–
00 00 00 00 00 : No errors detected
– 06 00 00 00 00 : Error code 6 is the last and only
detected error
– 09 06 00 00 00 : Error code 6 was first detected and
error code 9 is the last detected error
• Via the blinking LED procedure (when you have no
picture). See next paragraph.
• Via ComPair.
5.4.3 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.
5.4.4 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:
•
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.
• Via a “not acknowledge” of an I
2
C communication
Take notice that some errors need more than 90 seconds
before they start blinking. So in case of problems wait 2
minutes from start-up onwards, and then check if the front LED
is blinking.
Table 5-3 Error code overview
Error Description Monitored by Error/Prot Device Defective Module schematics ID
1 I2C1 Viper P i2c1_blocked
2 I2C2 Viper P i2c2_blocked
3 I2C3 (connect SDA line to GND) St-by µP P i2c3_blocked B05E/B05A
4 I2C4 Viper P i2c4_blocked
5 Viper - Severe HW problem St-by µP P PNX8550 control B01B/B05A
6 5V supply St-by µP P 5v_supply B04E
7 8V6 supply St-by µP P 8v_supply
8 1.2V DC/DC St-by µP P 1v2_supply B04E
9 2.5V DC/DC St-by µP P 2v5_supply
11 3.3V DC/DC St-by µP P 3v3_supply B04E
12 12V supply St-by µP P 12v_supply B04E
13 Audio supply St-by µP P audio_supply
14 Class D amplifiers St-by µP P class_d_supply B08A
16 MPIF1 main supply (MSUP) Viper E KN10241C if_io
17 MPIF1 audio supply (ASUP) Viper E KN10241C if_io B03D
18 MPIF1 ref freq (ROK) Viper E KN10241C if_io B03B
21 MPIF2 main supply (MSUP) Viper E KN10241C if_io2
22 MPIF2 audio supply (ASUP) Viper E KN10241C if_io2
23 MPIF2 ref freq (ROK) Viper E KN10241C if_io2
25 Supply fault St-by µP P dc_dc_supply B01A
26 Power Dip detected St-by µP E [2]
27 Phoenix Viper E PNX2015B hd_subsystem B04E
28 MOP Viper P EP1C6 ouput_processor
28 JOP Viper P EP1C6 ouput_processor
29 AVIP1 Viper E PNX3000 av_input_processor1 B04E
31 AVIP2 Viper E PNX3000 av_input_processor2
32 MPIF1 Viper E KN10241C anl_fr_1 B03B
33 MPIF2 Viper E KN10241C anl_fr_2
34 Tuner1 Viper E UV1318/TEDH700A tuner1 B02B
35 Tuner2 Viper E UV1318/TEDH700A tuner2
36 OFDM Viper E TDA10046 digital_if
37 Channel decoder Viper E NXT2003 Channel decoder 1 B02A
38 I/O expander audio Viper E PCA9555 audio_io_expander
39 POD Interface Viper E STV701 POD Interface
41 Channel decoder Viper E NXT2004 Channel decoder 2
42 audio source select matrix Viper E TEA6422 audio_source_select
43 Hi Rate Front End Viper E TDA8751 hdmi B07B
44 main NVM Viper E M24C32 nvm B05E
45 Columbus 1 Viper E T6TU5XB-0001 comb_filter B04E
46 Pacific 3 Viper E t.b.d. pq_fpga