Philips BP2.2U - Page 27

Service Modes, Error Codes, and Fault Finding
EN 27BP2.2U, BP2.3U 5.
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
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 Error/Prot Detected by Device Defective module Result
1I
2
C1 P VIPER n.a. I
2
C1_blocked Protection + 3 Hz blinking
2I
2
C2 P VIPER n.a. I
2
C2_blocked Protection + 3 Hz blinking
3I
2
C3 P Stby µP n.a. / Protection + Error blinking
4I
2
C4 P VIPER n.a. I
2
C4_blocked Protection + 3 Hz blinking
5 VIPER does not boot P Stby µP PNX8550 / Protection + Error blinking
6 5V supply P Stby µP n.a. / Protection + Error blinking
7 8V6 supply P Stby µP n.a. / Protection + Error blinking
8 1.2V DC/DC P Stby µP n.a. / Protection + Error blinking
11 3.3V DC/DC P Stby µP n.a. / Protection + Error blinking
12 12V supply P Stby µP n.a. / Protection + Error blinking
14 Supply Class D amplifiers P Stby µP / Protection + Error blinking
14 Supply Audio part SSB P Stby µP / Protection + Error blinking
17 MPIF1 audio supply E VIPER PNX3000 IF I/O Error logged
18 MPIF1 ref freq E VIPER PNX3000 IF I/O Error logged
25 Supply fault P Stby µP / Protection + Error blinking
27 Phoenix E VIPER PNX2015B HD subsystem Error logged
28 MOP E VIPER EP1C6 Output processor Error logged
29 AVIP1 E VIPER PNX2015 AV input processor 1 Error logged
31 AVIP2 E VIPER PNX2015 AV input processor 2 Error logged
32 MPIF1 E VIPER PNX3000 / Error logged
34 Tuner1 E VIPER / Tuner 1 Error logged
37 Channel decoder E VIPER NXT2003 / Error logged
39 POD Interface E VIPER STV701 / Error logged
43 Hi Rate Front End E VIPER TDA9975 HDMI Error logged
44 Main NVM E VIPER M24C64 / Error logged
45 Columbus 1 E VIPER PNX2015 Comb filter Error logged
53 VIPER P Stby µP PNX8550 / Protection + Error blinking
63 PDP Display P VIPER / Display Protection + 3 Hz blinking