Philips LC7.1HE LA Service Manual page 25

Table 5-2 Error code overview
Error Description
1)
code
0 No error.
1 DC Protection of speakers.
+12V protection error.
2
3 Reserved.
4 General I2C error.
5 Trident Video Processor
communication error.
6 I2C error while communicating
with the NVM.
7 I2C error while communicating
with the Tuner.
8 I2C error while communicating
with the IF Demodulator.
9 I2C error communicating with
the Sound Processor.
10 SDRAM defective.
11 I2C error while communicating
with the HDMI IC.
12 I2C error while communicating
with the MOJO PNX8314.
13 DVB HW communication error. 7F01,
14 SDRAM defective.
15 Reserved.
16 Reserved.
17 Reserved.
18 I2C error while communicating
with the i-Board processor.
19 I2C error while communication
with 1080p bolt-on module.
Notes
1. Some of the error codes reported are depending on the
option code configurations.
2. This error means: no I2C device is responding to the
particular I2C bus. Possible causes: SCL/SDA shorted to
GND, SCL shorted to SDA, or SCL/SDA open (at uP pin).
The internal bus of the Trident platform should not cause
the entire system to halt as such an error can be reported.
5.5.4 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:
– To enter SAM, press the following key sequence on the
remote control transmitter: "062596" directly followed
by the OSD/i+ button (do not allow the display to time
out between entries while keying the sequence).
– Make sure the menu item CLEAR is selected. Use the
MENU UP/DOWN buttons, if necessary.
– Press the MENU RIGHT button to clear the error
buffer. The text on the right side of the "CLEAR" line will
change from "CLEAR?" to "CLEARED"
• 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
Item Remarks
no.
12V missing or "low".
note 2
7202 When Trident IC is defective,
error 10 and 14 might also be
reported. Trident communicates
via parallel bus, not via the I2C
bus. The I2C bus of Trident is
only used in ComPair mode.
7315 The TV will not start-up due to
critical data not available from the
NVM, but the LED will blink the
error code.
1101
7113
7411
7204
7817
7G00 if applicable
if applicable
7K00,
7G00
7205
if applicable
if applicable
LC7.1HE LA
5.6 The Blinking LED Procedure
5.6.1 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 colour.
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.
5.6.2 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".
In order to avoid confusion with RC5 signal reception blinking,
this blinking procedure is terminated when a RC5 command is
received.
To erase the error buffer, the RC command "MUTE" "062599
"OK" can be used.
5.7 TV Main Software Upgrade
For instructions on how to upgrade the TV Main software, refer
to ComPair.
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 convenient if one directly can change
the NVM contents. This can be done with the "NVM Editor" in
SAM mode. With this option, single bytes can be changed.
Caution:
• Do not change the NVM settings without
understanding the function of each setting, because
incorrect NVM settings may seriously hamper the
correct functioning of the TV set!
• Always write down the existing NVM settings, before
changing the settings. This will enable you to return to the
original settings, if the new settings turn out to be incorrect.
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