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5.5.3
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).
Table 5-1 Error code overview
Error
Device
0
Not applicable
1
Not applicable
2
Not applicable
3
Not applicable
4
Genesis Scaler
Flash-ROM
5
Scaler supply
7752
6
Not applicable
7
ADC
8
Scaler EEPROM I
9
Hercules
EEPROM
10
Tuner
11
Columbus
12
Not applicable
13
HDMI Panellink
Receiver/
Decoder
14
Scaler SDRAM
15
Not applicable
16
EPLD
17
Digital Module
(only on Digital
sets)
18
Not applicable
Service Modes, Error Codes, and Fault Finding
Error Description
Check Item
Diagram
No Error
Mis-match of TV
-
-
Hercules SW and
Scaler SW
-
-
-
-
-
-
2
I
C error while
7801
B7 + B8
communicating with
the Genesis Scaler
and/or Flash-ROM
7B01
B10
is faulty/empty
+5V protection
7752
B6
2
General I
C error
1102, 7L04, 7M00 B1 + B18
+ B19
2
I
C error
7L04
B18
2
C error while
7C01
B11
communicating with
the Scaler
EEPROM
2
I
C error while
7207
B2
communicating with
the Hercules
EEPROM (NVM for
TV).
Remark: when the
Hercules EEPROM
is defective, the
Hercules should
operate with its
default values.
2
I
C error while
1102, F102, F104,
B1
communicating with
F107
the PLL tuner
2
I
C error while
7M00
B19
communicating with
the 2D/3D
combfilter
Columbus
-
-
-
2
I
C error while
7D03
B12
communicating with
(only in
the iBoard HDMI
NAFTA
Panellink Receiver/
and AP
Decoder (only in
sets)
NAFTA and AP
sets)
Read-write error
7B01
B10
with the Scaler
SDRAM
-
-
-
2
I
C error while
7N02
B20 +
communicating with
B21
EPLD
2
I
C error while
Digital Module
communicating with
(only on Digital
the Digital Module
sets)
(only on Digital
sets)
-
-
-
LC4.8E AA
5.6
The Blinking LED Procedure
Using this procedure, you can make the contents of the error
buffer visible via the front LED. This is especially useful when
there is no picture.
When the SDM is entered, the front LED will blink the contents
of the error-buffer:
•
The LED blinks with as many pulses as the error code
number, followed by a time period of 1.5 seconds, in which
the LED is off.
•
Then this sequence is repeated.
Any RC5 command terminates this sequence.
Example of error buffer: 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.
5.7
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.
5.7.1
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. 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!
•
Do not change the Scaler NVM settings, as this will
hamper the DVI functionality of the TV set!
•
Always note down the existing NVM settings, before
changing the settings. This will enable you to return to the
orgininal settings, if the new settings turn out to be
incorrect.
Table 5-2 NVM editor overview
Hex
.ADR
0x000A
.VAL
0x0000
.Store
5.
EN 19
Dec
Description
10
Existing value
0
New value
Store?
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