Philips L06.1E AA Service Manual page 15

Service Modes, Error Codes, and Fault Finding
Figure 5-5 IAP interface
J2
25
C1
24
VCC GND
23
22
16V10u
21
20
19 VCC
GND
18
17
16
1N4148
15
D3
14
SDA2
SN74LS05
13
12 SDA1 1 2
SCL2
U1A
11
D1
10
VCC
9
D5
1N4148
8
1N4148
7
6
SCL1 3 4
U1B
5
4
D7
3
SDA1 SN74LS05
1N4148
2
SCL1
1
Figure 5-6 IAP interface circuit diagram
Installing the IAP software on a PC
When all the items mentioned above are present, install the
software on a PC as follows:
• Extract the Trident EXSDK package (EXSDK.zip) into
C:\Trident\Bin.
• The IAPWriter6.exe file is now inside the Bin folder.
Programming the Flash IC
The pre-requisite for flashing the software is that the Flash IC
should have a bootloader (this means that there is already
software on the TV set). To start the flashing, do as follows:
• Turn on the TV set, enter SAM mode > IAP. The TV is now
in the IAP mode.
• Connect the PC to the TV via the Parallel-to-I
(IAP Interface).
• Double-click on C:\Trident\Bin\IAPWriter6.exe in order to
launch the IAP writer. The main interface will appear.
• Check that these parameters are set correctly:
DEVICE STM29W400DT
MPU Start Address 080000
MPU End Address 0FBFFF
Buffer Start Address 000000
Buffer End Address 07FFFF
Note: The device depends on the Flash IC used.
• Select File > Load, and select the .bin file to be
programmed to the Flash IC.
• Select File Type "Binary".
• Select "Write Device".
Note: If there are no errors reported, the programming is
successful.
Note: Sometimes, an error message may appear. Please
try a few times if this happens.
G_16350_062.eps
060406
J1
SCL
3
SDA
2
1
GND
CON3
R1 R2
D4
2K 2K
1N4148
SDA2 SDA
D2
1N4148 D6
1N4148
SCL2 SCL
D8
1N4148
G_16350_063.eps
060406
2
C card
L06.1E
How to Order
Note: If you encounter any problems, contact your local
support desk.
5.5 Error Codes
5.5.1 Introduction
The error code buffer contains all detected errors since the last
time the buffer was erased. The buffer is written from left to
right, new errors are logged at the left side, and all other errors
shift one position to the right.
When an error has occurred, the error is added to the list of
errors, provided the list is not full or the error is a protection
error.
When an error occurs and the error buffer is full, then the new
error is not added, and the error buffer stays intact (history is
maintained), except when the error is a protection error.
To prevent that an occasional error stays in the list forever, the
error is removed from the list after 50+ operation hours.
When multiple errors occur (errors occurred within a short time
span), there is a high probability that there is some relation
between them.
5.5.2 How to Read the Error Buffer
Use one of the following methods:
• On screen via the SAM (only if you have a picture).
Examples:
– 0 0 0 0: No errors detected
– 6 0 0 0: Error code 6 is the last and only detected error
– 9 6 0 0: 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 IAP.
5.5.3 How to Clear the Error Buffer
Use one of the following methods:
• By activation of the "CLEAR ERRORS" 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 Codes
The function of error codes is to indicate failures in the TV set.
In principle a unique error code is available for every:
2
• I C device error.
2
• I C bus error (for every bus containing two or more I
devices).
• Protection error (e.g. +8V protection or Horizontal
protection).
• Error not related to an I
BC-loop, RAM error).
5. EN 15
2
C
2
C device, but of importance (e.g.