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5.5.1
How To Read The Error Buffer
You can read the error buffer in 3 ways:
•
On screen via the SAM (if you have a picture).
Examples:
–
ERROR: 0 0 0 0 0: No errors detected
–
ERROR: 6 0 0 0 0: Error code 6 is the last and only
detected error
–
ERROR: 9 6 0 0 0: Error code 6 was detected first and
error code 9 is the last detected (newest) error
•
Via the blinking LED procedure (when you have no
picture). See "The Blinking LED Procedure".
•
Via ComPair.
5.5.2
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/STATUS button (do not allow the OSD
display to time out between entries while keying the
sequence).
–
Make sure the menu item CLEAR is highlighted. Use
the CURSOR UP/DOWN buttons, if necessary.
–
Press the CURSOR RIGHT button to clear the error
buffer. The text on the right side of the "CLEAR" line will
change from "CLEAR?" to "CLEARED"
•
If an error does not reoccur within 50 hours it is deleted
from the error buffer.
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).
Service Modes, Error Codes, and Fault Finding
LC4.6U AA
Table 5-2 Error code overview
Error Device
Error description
0
Not applicable -
1
Not applicable -
2
Not applicable -
3
Not applicable -
2
4
GM1501
I
C error while
Scaler
communicating with
the Genesis Scaler
Flash-ROM
and/or Flash-ROM
is faulty/empty
5
Not applicable +5V protection
6
I2C bus
General I
7
Not applicable -
2
8
M24C32
I
C error while
communicating with
the Scaler EEPROM
2
9
M24C16
I
C error while
communicating with
the EEPROM
2
10
Tuner
I
C error while
communicating with
the PLL tuner
11
Not applicable -
12
Not applicable -
13
Not applicable -
14
K4D263238M
Read-write error
with the Scaler
SDRAM
2
15
TDA9178T/N1 I
C error while
communicating with
Histogram
2
16
TDA9178T/N1 I
C error while
communicating with
EPLD on Pixel Plus
panel
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 at 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.
EN 13
Check item
Diagram
-
-
-
-
-
-
-
-
7401
A7
7530
A11
7930
A6
2
C error
7011, 3088, 3096
A2
-
-
7531
A11
7099
A2
1302, 3302, 3303, 3327
A1
-
-
-
-
-
-
7501
A10
7560
A3
7560
A3
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