Philips L06.1E AA Service Manual page 16

EN 16 5.
Table 5-2 Error Table
Error Description
0 0 = No error
2 High beam (BCI) protection
3 Vertical guard protection
4 POR bit / +8 V protection
7 Black current loop instability protection
2
8 General I C error Microprocessor (M30620FCNGP)
2
9 I C error while communicating with the PLL tuner
(UV1316E)
2
10 I C error while communicating with the EEPROM
(NVM at uP, M24C64)
2
11 I C error while communicating with the IF
demodulator (TDA9886T/V4)
2
12 I C error while communicating with the Trident
(SVPEX42)
2
13 I C error while communicating with the HOP
(TDA9332H/N3)
2
14 I C error while communicating with the HDMI
(SIL9011 CLU)
2
15 I C error while communicating with the Audio
Demodulator (MSP3411G)
2
16 I C error while communicating with the ADC RGB
(AD9985KST-110)
2
19 I C error while communicating with the SDRAM IC
(K4D263238F)
Service Tips:
• In case of non-intermittent faults, clear the error buffer
before you begin the repair. This to ensure that old error
codes are no longer present. Before clearing the buffer,
write down the content, as this history can give you
significant information.
• 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).
5.6 The Blinking LED Procedure
5.6.1 Introduction
Via this procedure, you can make the contents of the error
buffer visible via the front LED. This is especially useful for fault
finding, when there is no picture.
When the SDM is activated, the front LED will show (by
blinking) the contents of the error-buffer. Error-codes > 10 are
shown as follows:
1. A long blink of 750 ms (which is an indication of the decimal
digit),
2. A pause of 1500 ms,
3. "n" short blinks (where "n" = 1 - 9),
4. When all the error-codes are displayed, the sequence
finishes with a LED blink of 3000 ms,
5. The sequence starts again.
Example: Error 12 9 6 0 0.
After activation of the SDM, the front LED will show:
1. 1 long blink of 750 ms (which is an indication of the decimal
digit) followed by a pause of 1500 ms,
2. 2 short blinks of 250 ms, followed by a pause of 3000 ms,
3. 9 short blinks of 250 ms, followed by a pause of 3000 ms,
4. 6 short blinks of 250 ms, followed by a pause of 3000 ms,
5. 1 long blink of 3000 ms to finish the sequence,
6. The sequence starts again.
L06.1E Service Modes, Error Codes, and Fault Finding
5.6.2 How to Activate
Use one of the following methods:
• Activate the SDM (only by shorting the soldering pad
indicated in Figure "SDM Service contact" on the first page
of this chapter to mass). The blinking front LED will show
the entire contents of the error buffer (this works in "normal
operation" mode and in "protection" mode). In order to
avoid confusion with RC5 signal reception blinking, this
LED blinking procedure is terminated when an RC5
command is received.
• Transmit the commands "MUTE", "06250x", and "OK" with
a normal RC (where "x" is the position in the error buffer
that has to be displayed). With x= 1, the last detected error
is shown, x= 2 the second last error, etc.... When x= 0, all
errors are shown.
• "DIAGNOSE X" with the DST (where "x" is the position in
the error buffer that has to be displayed). With x= 1, the last
detected error is shown, x= 2 the second last error, etc....
When x= 0, all errors are shown.
Note: It can take some seconds before the blinking LED starts.
5.7 Software Downloading
In this chassis, you can upgrade the software via the IAP Tool
(In Application Programming). You can find more information
on this in the paragraph "Service Tools" in this chapter.
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.