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EN 12
5.
LC8.1E LB
5. Service Modes, Error Codes, and Fault Finding
Index of this chapter:
5.1 Test Points
5.2 Service Modes
5.3 Service Tools
5.4 Error Codes
5.5 The Blinking LED Procedure
5.6 Software Upgrading
5.7 Fault Finding and Repair Tips
5.1
Test Points
In the chassis schematics and layout overviews, the test points
(Fxxx) are mentioned. In the schematics, test points are
indicated with a rectangular box around "Fxxx" or "Ixxx", in the
layout overviews with a "half-moon" sign.
As most signals are digital, it will be difficult to measure
waveforms with a standard oscilloscope. Several key ICs are
capable of generating test patterns, which can be controlled via
ComPair. In this way it is possible to determine which part is
defective.
5.2
Service Modes
The Service Mode feature is split into four parts:
•
Simplified Service Default Mode (SDM).
•
Service Alignment Mode (SAM).
•
Customer Service Mode (CSM).
•
Computer Aided Repair Mode (ComPair).
SDM and SAM offer features, which can be used by the Service
engineer to repair/align a TV set. Some features are:
•
Activates the blinking LED procedure for error identification
when no picture is available (SDM).
•
Make alignments (e.g. white tone), (de)select options,
enter options codes, reset the error buffer (SAM).
•
Display information ("SAM" indication in upper right corner
of screen, error buffer, software version, options and option
codes, sub menus).
The CSM is a Service Mode that can be enabled by the
consumer. The CSM displays diagnosis information, which the
customer can forward to the dealer or call centre. In CSM
mode, "CSM", is displayed in the top right corner of the screen.
The information provided in CSM and the purpose of CSM is to:
•
Increase the home repair hit rate.
•
Decrease the number of nuisance calls.
•
Solved customers' problem without home visit.
ComPair Mode is used for communication between a computer
2
and a TV on I
C /UART level and can be used by a Service
engineer to quickly diagnose the TV set by reading out error
codes, read and write in NVMs, communicate with ICs and the
uP (PWM, registers, etc.), and by making use of a fault finding
database. It will also be possible to up and download the
software of the TV set via I
ComPair has to be connected to the TV set via the compare
connector, which will be accessible through the rear of the set
(without removing the rear cover).
5.2.1
General
Some items are applicable to all Service Modes or are general.
These are listed below.
Software Identification, Version, and Cluster
The software ID, version, and cluster will be shown in the main
menu display of SDM, SAM, and CSM.
The screen will show: "AAAABCD X.YY", where:
•
AAAA is the chassis name: LC81.
Service Modes, Error Codes, and Fault Finding
2
C with help of ComPair. To do this,
•
B is the region indication: E= Europe, A= AP/China,
U=NAFTA, L= LATAM.
•
C is the display indication: L= LCD, P= Plasma.
•
D is the language/feature indication: 1= standard, H=1080p
full HD.
•
X is the main version number: this is updated with a major
change of specification (incompatible with the previous
software version). Numbering will go from 1 - 9 and A - Z.
–
If the main version number changes, the new version
number is written in the NVM.
–
If the main version number changes, the default
settings are loaded.
•
YY is the sub version number: this is updated with a minor
change (backwards compatible with the previous versions)
Numbering will go from 00 - 99.
–
If the sub version number changes, the new version
number is written in the NVM.
–
If the NVM is fresh, the software identification, version,
and cluster will be written to NVM.
Display Option Code Selection
When after an SSB or display exchange, the display option
code is not set properly; it will result in a TV with "no display".
Therefore, it is required to set this display option code after
such a repair.
To do so, press the following key sequence on a standard RC
transmitter: "062598" directly followed by MENU the OSD
"Panel Selection" will displayed on screen and "xxx", where
"xxx" is a 3 digit decimal value of the panel type: see column
"Display code" in table "Option code overview" (ch. 8), or see
sticker on the side/bottom of the cabinet. When the value
is accepted and stored in NVM, the OSD "Panel Selection" will
be disappear set remain on, to indicate that the process has
been completed.
Display Option
Code
39mm
PHILIPS
040
MODEL:
32PF9968/10
PROD.SERIAL NO:
AG 1A0620 000001
(CTN Sticker)
Figure 5-1 Location of Display Option Code sticker
During this algorithm, the NVM-content must be filtered,
because several items in the NVM are TV-related and not SSB
related (e.g. Model and Prod. S/N). Therefore, "Model" and
"Prod. S/N" data is changed into "See Type Plate".
In case a call centre or consumer reads "See Type Plate" in
CSM mode, he needs to look to the side/bottom sticker to
identify the set, for further actions.
5.2.2
Service Default Mode (SDM)
Purpose
This simplified SDM mode in LC8.1E LB chassis is used for
Error blinking only.
•
Start the blinking LED procedure.
How to Activate
•
Press the following key sequence on the remote control
transmitter: "062596" directly followed by the MENU
E_06532_038.eps
240108
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