The Blinking Led Procedure - Philips 32PFL3403D/85 Service Manual

5.4.3 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).
Code Error Description Detection via: Type
0 No Error -- -- --
1 DC Protection MT5382
(7A01)
2 +12V Failure WT61P7
(7E23)
3 Stand-by Control- I2C0 Bus
ler I2C
4 General I2C I2C0 Bus
5 # MT8280 I2C I2C0 Bus
6 System NVM I2C I2C0 Bus
7 Tuner Tuner I2C Bus Error Log
8 IF/PLL Demodula- Tuner I2C Bus Error Log
tor
9 Ambilight FPGA I2C0 Bus
10 Reserved -- -- --
11 Reserved -- -- --
12 Reserved -- -- --
13 HDMI Switch I2C I2C0 Bus
14 MT8280 DRAM1 DRAM R/W
(7B02/03)
15 Reserved -- -- --
16 Reserved -- -- --
17 Reserved -- -- --
18 # Channel Decoder I2C0 Bus
I2C
19 # Pro Idiom I2C I2C0 Bus
21 # Bolt-On HDMI I2C0 Bus
NVM I2C
# If IC/board available.
5.4.4 How to Clear the Error Buffer
The error code buffer is cleared in the following cases:
• By using the CLEAR command in the SAM menu:
• If the contents of the error buffer have not changed for 50
hours, the error buffer resets automatically.
Note: If you exit SAM by disconnecting the mains from the
television set, the error buffer is not reset.
Service Modes, Error Codes, and Fault Finding
Remarks
N/A -- -- --
Protection DC_PROT = Low
Protection POWER_DOWN = Low
Protection Communication Error with
WT61P7
Error Log Communication Error on
I2C0 Bus
Error Log Communication Error with
MT8280
Protection Communication Error with
System NVM
Communication Error with
Tuner TDQU
Communication Error with
TDA9886
Error Log Communication Error with
EC2S
N/A -- -- --
N/A -- -- --
N/A -- -- --
Error Log Communication Error with
Sil9185
Error Log R/W Error with DRAM1 or
DRAM2
N/A -- -- --
N/A -- -- --
N/A -- -- --
Error Log Communication Error with
MT5112 (reserved
BDS modules)
Error Log Communication Error with
Pro Idiom (reserved for
BDS modules)
Error Log Communication Error with
BDS Bolt-On (reserved for
BDS modules)
5.5

The Blinking LED Procedure

5.5.1 Introduction
The software is capable of identifying different kinds of errors.
Because it is possible that more than one error can occur over
time, an error buffer is available, which is capable of storing the
last five errors that occurred. This is useful if the OSD is not
working properly.
Errors can also be displayed by the blinking LED procedure.
The method is to repeatedly let the front LED pulse with as
many pulses as the error code number, followed by a period of
1.5 seconds in which the LED is "off". Then this sequence is
repeated.
Example (1): error code 4 will result in four times the sequence
LED "on" for 0.25 seconds / LED "off" for 0.25 seconds. After
this sequence, the LED will be "off" for 1.5 seconds. Any RC5
command terminates the sequence. Error code LED blinking is
in red color.
Example (2): the content of the error buffer is "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 with 12 short blinks.
5.5.2 Displaying the Entire Error Buffer
Additionally, the entire error buffer is displayed when Service
Mode "SDM" is entered. In case the TV set is in protection or
Stand-by: The blinking LED procedure sequence (as in SDM-
mode in normal operation) must be triggered by the following
RC sequence: "MUTE" "062500" "OK".
for
In order to avoid confusion with RC5 signal reception blinking,
this blinking procedure is terminated when a RC5 command is
received.
LC8.1U LA 5. EN 25