Philips LC4.9E Service Manual Download Page 16

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Service Modes, Error Codes, and Fault Finding

EN 16

LC4.9E AB

Since 2004, the LVDS output connectors in our Flat TV models
are standardised (with some exceptions). With the two
delivered LVDS interface cables (31p and 20p) you can cover
most chassis (in special cases, an extra cable will be offered).

When operating, the tool will show a small (scaled) picture on
a VGA monitor. Due to a limited memory capacity, it is not
possible to increase the size when processing high-resolution
LVDS signals (>= 1280x768). Generally this tool is intended to
determine if the SSB is working or not. Thus to determine if
LVDS, RGB, and sync signals are okay.

How to Connect

Connections are explained in the user manual, which is
delivered with the tool.

Note:

To use the LVDS tool, you must have ComPair release

2004-1 (or later) on your PC (engine version >= 2.2.05).
For every TV type number and screen size, one must choose
the proper settings via ComPair. The ComPair file will be
updated regularly with new introduced chassis information.

How to Order

•

LVDS tool (incl. two LVDS cables: 31p and 20p):
3122 785 90671.

•

Service Manual LVDS tool:
3122 785 00810.

•

LVDS cable 20p (for Telra 14-inch):
3122 785 90810.

•

LVDS cable 30p (for LC4.3):
3122 785 90820.

•

LVDS cable 41p-to-31p for CA1 (dual -> single LVDS):
3122 785 90830.

5.5

Error Codes

The error code buffer contains all errors detected since the last
time the buffer was erased. The buffer is written from left to
right. When an error occurs that is not yet in the error code
buffer, it is displayed at the left side and all other errors shift one
position to the right.

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 display
to time out between entries while keying the
sequence).

–

Make sure the menu item CLEAR is highlighted. 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.

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

Error Description

Check Item

Diagram

Not applicable

No Error

Not applicable

Mis-match of TV
Hercules SW and
Scaler SW

Not applicable

Genesis Scaler