Table of Contents
Advertisement
Safety Instructions, Warnings, Notes, and Abbreviation List
2.3.5
Alternative BOM identification
It should be noted that on the European Service website,
"Alternative BOM" is referred to as "Design variant".
The third digit in the serial number (example:
KX 2B0835000001) indicates the number of the alternative
B.O.M. (Bill Of Materials) that has been used for producing the
specific AV set. In general, it is possible that the same AV
model on the market is produced with e.g. two different types
of display, coming from two different suppliers. This
will then result in sets which have the same CTN (Commercial
Type Number; e.g. MCM394/12) but which have a different
B.O.M. number.
Also, it is possible that same model on the market is produced
with two production centers, however their partslist is the same.
In such case, no alternative B.O.M. will be created.
By looking at the third digit of the serial number, one can
identify which B.O.M. is used for the set he is working with.
If the third digit of the serial number contains the number "1"
(example: KX 1B033500001), then the set has been
manufactured according to B.O.M. number 1. If the third digit is
a "2" (example: KX 2B0335000001), then the set has been
produced according to B.O.M. no. 2. This is important for
ordering the correct spare parts!
For the third digit, the numbers 1...9 and the characters A...Z
can be used, so in total: 9 plus 26= 35 different B.O.M.s can be
indicated by the third digit of the serial number.
Identification: The bottom line of a type plate gives a 14-digit
serial number. Digits 1 and 2 refer to the production centre (e.g.
LM is Arts), digit 3 refers to the B.O.M. code, digit 4 refers
to the Service version change code, digits 5 and 6 refer to the
production year, and digits 7 and 8 refer to production week (in
example below it is 2008 week 50). The 6 last digits contain the
serial number.
Model FWM572/12
220-230 50Hz 60W
FWM572/12
LM1A0850005644
Figure 2-1 Serial number (example)
2.3.6
Module Level Repair (MLR) or Component Level Repair
(CLR)
If a board is defective, consult your repair procedure to decide
if the board has to be exchanged or if it should be repaired on
component level.
If your repair procedure says the board should be exchanged
completely, do not solder on the defective board. Otherwise, it
cannot be returned to the O.E.M. supplier for back charging!
2.3.7
Practical Service Precautions
•
It makes sense to avoid exposure to electrical shock.
While some sources are expected to have a possible
dangerous impact, others of quite high potential are of
limited current and are sometimes held in less regard.
•
Always respect voltages. While some may not be
dangerous in themselves, they can cause unexpected
reactions that are best avoided. Before reaching into a
powered TV set, it is best to test the high voltage insulation.
It is easy to do, and is a good service precaution.
1 - 5
2.4
Abbreviation List
0/6/12
2DNR
3DNR
AARA
ACI
ADC
AFC
AGC
AM
ANR
AP
AR
ASF
ATSC
ATV
Auto TV
AV
AVC
AVIP
B/G
BLR
BTSC
B-TXT
C
CEC
CL
CLR
COLUMBUS
ComPair
CP
CSM
CTI
CVBS
DAC
DBE
DDC
SCART switch control signal on A/V
board. 0 = loop through (AUX to TV),
6 = play 16 : 9 format, 12 = play 4 : 3
format
Spatial (2D) Noise Reduction
Temporal (3D) Noise Reduction
Automatic Aspect Ratio Adaptation:
algorithm that adapts aspect ratio to
remove horizontal black bars; keeps
the original aspect ratio
Automatic Channel Installation:
algorithm that installs TV channels
directly from a cable network by
means of a predefined TXT page
Analogue to Digital Converter
Automatic Frequency Control: control
signal used to tune to the correct
frequency
Automatic Gain Control: algorithm that
controls the video input of the feature
box
Amplitude Modulation
Automatic Noise Reduction: one of the
algorithms of Auto TV
Asia Pacific
Aspect Ratio: 4 by 3 or 16 by 9
Auto Screen Fit: algorithm that adapts
aspect ratio to remove horizontal black
bars without discarding video
information
Advanced Television Systems
Committee, the digital TV standard in
the USA
See Auto TV
A hardware and software control
system that measures picture content,
and adapts image parameters in a
dynamic way
External Audio Video
Audio Video Controller
Audio Video Input Processor
Monochrome TV system. Sound
carrier distance is 5.5 MHz
Board-Level Repair
Broadcast Television Standard
Committee. Multiplex FM stereo sound
system, originating from the USA and
used e.g. in LATAM and AP-NTSC
countries
Blue TeleteXT
Centre channel (audio)
Consumer Electronics Control bus:
remote control bus on HDMI
connections
Constant Level: audio output to
connect with an external amplifier
Component Level Repair
COlor LUMinance Baseband
Universal Sub-system
Computer aided rePair
Connected Planet / Copy Protection
Customer Service Mode
Color Transient Improvement:
manipulates steepness of chroma
transients
Composite Video Blanking and
Synchronization
Digital to Analogue Converter
Dynamic Bass Enhancement: extra
low frequency amplification
See "E-DDC"
Advertisement
Table of Contents
