Service Modes, Error Codes, and Fault Finding
5.
5.
Service Modes, Error Codes, and Fault Finding
Index of this chapter:
5.1 Test Points
5.2 Hotel mode
5.3 Service Modes
5.4 Service Tools
5.5 Error Codes
5.6 The Blinking LED Procedure
5.7 Software Upgrading
5.8 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.
Perform measurements under the following conditions:
•
Service Default Mode.
•
Video: Colour bar signal.
•
Audio: 3 kHz left, 1 kHz right.
5.2
Hotel mode
Before the service modes can be activated, the set first needs
to be switched into normal consumer mode (MTV-Mode). Use
an iTV setup remote control (type: RC2573/01, 12nc:
3139 228 88782) to key in the code ‘024995’ (slowly) directly
followed by the MENU button. The text messages “TV Is Now
In MTV Mode” and “Please Do A Cold Start!” appears on the
screen. Disconnect the set for a few seconds from the mains
supply, reconnect the set to the mains supply again. The set is
now in the normal consumer mode (MTV-Mode).
After repair, place the set into hotel mode (iTV-Mode) again.
Key-in the same code on the remote control as described
above. The text message “TV Is Now In ITV Mode” appears. A
cold start must be performed as described above. The set is
now in the hotel mode (iTV-Mode) again.
5.3
Service Modes
Service Default mode (SDM) and Service Alignment Mode
(SAM) offers several features for the service technician, while
the Customer Service Mode (CSM) is used for communication
between the call centre and the customer.
This chassis also offers the option of using ComPair, a
hardware interface between a computer and the TV chassis. It
offers the abilities of structured troubleshooting, error code
reading, and software version read-out for all chassis.
(see also section
).
5.3.1
General
Some items are applicable to all Service Modes or are general.
These are listed below.
Life Timer
During the life time cycle of the TV set, a timer is kept. It counts
the normal operation hours (not the Stand-by hours). The
actual value of the timer is displayed in SDM and CSM in a
decimal value. Every two soft-resets increase the hour by +1.
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: “
AAAAABCD X.YY
”, where:
•
AAAAA
is the chassis name: LC82H.
•
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
and “
xxx
”,
where “xxx” is a 3 digit decimal value of the panel type: see
column “Display code” in table
, or
see sticker on the side/bottom of the cabinet. When the value
is accepted and stored in NVM, the set will switch to Stand-by,
to indicate that the process has been completed.
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.
PHILIPS
MODEL:
3
2PF996
8
/10
PROD.
S
ERIAL NO:
AG 1A0620 000001
040
3
9mm
27mm
(CTN
S
ticker)
Di
s
pl
a
y Option
Code
E_065
3
2_0
38
.ep
s
24010
8
