10. Circuit Diagrams and PWB LayoutsDrawing PWB
Interface Ambilight: Interface + Single DC-DC
Interface Ambilight: Dual DC-DC6971
Interface Ambilight: Microcontrollerblock7071
6 LED Low-Pow: Microcontroller Block Liteon7275
6 LED Low-Pow: Microcontroller Block Liteon7375
6 LED Low-Pow: LED Liteon7475
8 LED Low-Pow: Microcontroller Block Liteon7680
8 LED Low-Pow: Microcontroller Block Liteon7780
8 LED Low-Pow: LED Liteon7880
8 LED Low-Pow: LED Drive Liteon7980
10 LED Low-Pow: Microcontroller Block Liteon 8185
10 LED Low-Pow: Microcontroller Block Liteon 8285
10 LED Low-Pow: LED Liteon8385
Copyright 2009 Koninklijke Philips Electronics N.V.
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted, in any form or by any means, electronic, mechanical,
photocopying, or otherwise without the prior permission of Philips.
6871
10 LED Low-Pow: LED Drive Liteon8485
12 LED Low-Pow: Microcontroller Block Liteon 8690
12 LED Low-Pow: Microcontroller Block Liteon 8790
12 LED Low-Pow: LED Liteon8890
12 LED Low-Pow: LED Drive8990
SSB: DC/DC +3V3 +1V291119
SSB: DC/DC +3V3 +1V2 Standby92119
SSB: Front End93119
SSB: PNX8543 - Power94119
SSB: PNX8543 - Video Streams/LVDS Output 95119
SSB: PNX8543 Audio Amplifier96119
SSB: PNX8543 Audio97119
SSB: PNX8543 Analog AV98119
SSB: PNX8543 SDRAM99119
SSB: PNX8543 Control MIPS/Flash/PCI100119
SSB: PNX8543 Standby Control/Debug101119
SSB: Bolt-on102119
SSB: Analog IO - Scart 1 & 2103119
SSB: YPbPr / Side I/O / S-video104119
SSB: HDMI105119
SSB: Ethernet106119
SSB: PCMCIA107119
SSB: Class-D108119
SSB: Display Interface (Common)109119
SSB: Display Supply110119
SSB: PNX5100 - Power111119
SSB: PNX5100 - SDRAM112119
SSB: PNX5100 - Control / PCI / Debug113119
SSB: PNX5100 - LVDS In/Out114119
SSB: PNX5100 - AmbiLight115119
SSB: SRP List Explanation116
SSB: SRP List Part 1117
SSB: SRP List Part 2118
Published by ER/TY 0964 BU TV Consumer Care, the NetherlandsSubject to modificationEN 3122 785 18560
2009-Apr-03
Page 2
EN 2Q548.1E LA1.
Revision List
1.Revision List
Manual xxxx xxx xxxx.0
•First release.
2.Technical Specifications and Connections
Index of this chapter:
2.1
Technical Specifications
2.2 Directions for Use
2.3 Connections
2.4 Chassis Overview
Notes:
•Figures can deviate due to the different set executions.
•Specifications are indicative (subject to change).
2.1Technical Specifications
For on-line product support please use the links in Table 2-1.
Here is product information available, as well as getting started,
user manuals, frequently asked questions and software &
drivers.
Table 2-1 Described Model numbers
CTNStylingPublished in:
32PFL7404H/12
42PFL7404H/12
47PFL7404H/12
52PFL7404H/12
32PFL8404H/12
37PFL8404H/12
42PFL8404H/12
47PFL8404H/12
Frame3122 785 18560
3122 785 18560
3122 785 18560
3122 785 18560
Roadrunner3122 785 18560
3122 785 18560
3122 785 18560
3122 785 18560
2.2Directions for Use
You can download this information from the following websites:
1 - Audio R 0.5 V
2 - Audio R 0.5 V
3 - Audio L 0.5 V
4 - Ground Audio Gnd H
/ 1 kΩ k
RMS
/ 10 kΩ j
RMS
/ 1 kΩ k
RMS
5 - Ground Blue Gnd H
6 - Audio L 0.5 V
7 - Video Blue 0.7 V
8 - Function Select 0 - 2 V: INT
/ 10 kΩ j
RMS
/ 75 Ω jk
PP
4.5 - 7 V: EXT 16:9
9.5 - 12 V: EXT 4:3 j
9 - Ground Green Gnd H
10 - n.c.
11 - Video Green 0.7 V
12 - n.c.
/ 75 Ω j
PP
13 - Ground Red Gnd H
14 - Ground P50 Gnd H
15 - Video Red 0.7 V
/ 75 Ω j
PP
16 - Status/FBL 0 - 0.4 V: INT
1 - 3 V: EXT / 75 Ω j
17 - Ground Video Gnd H
18 - Ground FBL Gnd H
19 - Video CVBS/Y 1 V
20 - Video CVBS 1 V
/ 75 Ω k
PP
/ 75 Ω j
PP
21 - Shield Gnd H
10 - Cinch: S/PDIF - Out
Bk - Coaxial 0.4 - 0.6V
/ 75 Ω kq
PP
11 - Cinch: Audio - Out
Rd - Audio - R 0.5 V
Wh - Audio - L 0.5 V
/ 10 kΩ kq
RMS
/ 10 kΩ kq
RMS
14 - EXT3: Cinch: Video YPbPr - In, Audio - In
Gn - Video Y 1 V
Bu - Video Pb 0.7 V
Rd - Video Pr 0.7 V
Rd - Audio - R 0.5 V
Wh - Audio - L 0.5 V
/ 75 Ω jq
PP
/ 75 Ω jq
PP
/ 75 Ω jq
PP
/ 10 kΩ jq
RMS
/ 10 kΩ jq
RMS
15 - HDMI 1, 2 & 3: Digital Video, Digital Audio - In
Figure 2-5 HDMI (type A) connector
1 - D2+ Data channel j
2 - Shield Gnd H
3 - D2- Data channel j
4 - D1+ Data channel j
5 - Shield Gnd H
6 - D1- Data channel j
7 - D0+ Data channel j
8 - Shield Gnd H
9 - D0- Data channel j
10 - CLK+ Data channel j
11 - Shield Gnd H
12 - CLK- Data channel j
13 - Easylink Control channel jk
14 - n.c.
15 - DDC_SCL DDC clock j
16 - DDC_SDA DDC data jk
17 - Ground Gnd H
18 - +5V j
19 - HPD Hot Plug Detect j
20 - Ground Gnd H
16 - Aerial - In
-- IEC-type (EU) Coax, 75 Ω D
2.4Chassis Overview
Refer to chapter Block Diagrams for PWB/CBA locations.
2009-Apr-03
Page 5
Precautions, Notes, and Abbreviation List
3.Precautions, Notes, and Abbreviation List
EN 5Q548.1E LA3.
Index of this chapter:
Safety Instructions
3.1
3.2 Warnings
3.3 Notes
3.4 Abbreviation List
3.1Safety Instructions
Safety regulations require the following during a repair:
•Connect the set to the Mains/AC Power via an isolation
transformer (> 800 VA).
•Replace safety components, indicated by the symbol h,
only by components identical to the original ones. Any
other component substitution (other than original type) may
increase risk of fire or electrical shock hazard. Of de set
ontploft!
Safety regulations require that after a repair, the set must be
returned in its original condition. Pay in particular attention to
the following points:
•Route the wire trees correctly and fix them with the
mounted cable clamps.
•Check the insulation of the Mains/AC Power lead for
external damage.
•Check the strain relief of the Mains/AC Power cord for
proper function.
•Check the electrical DC resistance between the Mains/AC
Power plug and the secondary side (only for sets that have
a Mains/AC Power isolated power supply):
1. Unplug the Mains/AC Power cord and connect a wire
between the two pins of the Mains/AC Power plug.
2. Set the Mains/AC Power switch to the “on” position
(keep the Mains/AC Power cord unplugged!).
3. Measure the resistance value between the pins of the
Mains/AC Power plug and the metal shielding of the
tuner or the aerial connection on the set. The reading
should be between 4.5 MΩ and 12 MΩ.
4. Switch “off” the set, and remove the wire between the
two pins of the Mains/AC Power plug.
•Check the cabinet for defects, to prevent touching of any
inner parts by the customer.
picture carrier at 475.25 MHz for PAL, or 61.25 MHz for
NTSC (channel 3).
•Where necessary, measure the waveforms and voltages
with (D) and without (E) aerial signal. Measure the
voltages in the power supply section both in normal
operation (G) and in stand-by (F). These values are
indicated by means of the appropriate symbols.
3.3.2Schematic Notes
•All resistor values are in ohms, and the value multiplier is
often used to indicate the decimal point location (e.g. 2K2
indicates 2.2 kΩ).
•Resistor values with no multiplier may be indicated with
either an “E” or an “R” (e.g. 220E or 220R indicates 220 Ω).
•All capacitor values are given in micro-farads (μ=× 10
nano-farads (n =× 10
•Capacitor values may also use the value multiplier as the
decimal point indication (e.g. 2p2 indicates 2.2 pF).
•An “asterisk” (*) indicates component usage varies. Refer
to the diversity tables for the correct values.
•The correct component values are listed on the Philips
Spare Parts Web Portal.
3.3.3Spare Parts
For the latest spare part overview, consult your Philips Spare
Part web portal.
3.3.4BGA (Ball Grid Array) ICs
Introduction
For more information on how to handle BGA devices, visit this
URL: http://www.atyourservice-magazine.com
“Magazine”, then go to “Repair downloads”. Here you will find
Information on how to deal with BGA-ICs.
BGA Temperature Profiles
For BGA-ICs, you must use the correct temperature-profile.
Where applicable and available, this profile is added to the IC
Data Sheet information section in this manual.
-9
), or pico-farads (p =× 10
. Select
-12
-6
),
).
3.2Warnings
•All ICs and many other semiconductors are susceptible to
electrostatic discharges (ESD w). Careless handling
during repair can reduce life drastically. Make sure that,
during repair, you are connected with the same potential as
the mass of the set by a wristband with resistance. Keep
components and tools also at this same potential.
•Be careful during measurements in the high voltage
section.
•Never replace modules or other components while the unit
is switched “on”.
•When you align the set, use plastic rather than metal tools.
This will prevent any short circuits and the danger of a
circuit becoming unstable.
3.3Notes
3.3.1 General
•Measure the voltages and waveforms with regard to the
chassis (= tuner) ground (H), or hot ground (I), depending
on the tested area of circuitry. The voltages and waveforms
shown in the diagrams are indicative. Measure them in the
Service Default Mode with a colour bar signal and stereo
sound (L: 3 kHz, R: 1 kHz unless stated otherwise) and
3.3.5Lead-free Soldering
Due to lead-free technology some rules have to be respected
by the workshop during a repair:
•Use only lead-free soldering tin. If lead-free solder paste is
required, please contact the manufacturer of your soldering
equipment. In general, use of solder paste within
workshops should be avoided because paste is not easy to
store and to handle.
•Use only adequate solder tools applicable for lead-free
soldering tin. The solder tool must be able:
– To reach a solder-tip temperature of at least 400°C.
– To stabilize the adjusted temperature at the solder-tip.
– To exchange solder-tips for different applications.
•Adjust your solder tool so that a temperature of around
360°C - 380°C is reached and stabilized at the solder joint.
Heating time of the solder-joint should not exceed ~ 4 sec.
Avoid temperatures above 400°C, otherwise wear-out of
tips will increase drastically and flux-fluid will be destroyed.
To avoid wear-out of tips, switch “off” unused equipment or
reduce heat.
•Mix of lead-free soldering tin/parts with leaded soldering
tin/parts is possible but PHILIPS recommends strongly to avoid mixed regimes. If this cannot be avoided, carefully
clear the solder-joint from old tin and re-solder with new tin.
2009-Apr-03
Page 6
EN 6Q548.1E LA3.
10000_024_090121.eps
090121
MODEL :
PROD.NO:
~
S
32PF9968/10
MADE IN BELGIUM
220-240V 50/60Hz
128W
AG 1A0617 000001
VHF+S+H+UHF
BJ3.0E LA
Precautions, Notes, and Abbreviation List
3.3.6 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:
AG2B0335000001) indicates the number of the alternative
B.O.M. (Bill Of Materials) that has been used for producing the
specific TV set. In general, it is possible that the same TV
model on the market is produced with e.g. two different types
of displays, coming from two different suppliers. This will then
result in sets which have the same CTN (Commercial Type
Number; e.g. 28PW9515/12) but which have a different B.O.M.
number.
By looking at the third digit of the serial number, one can
identify which B.O.M. is used for the TV set he is working with.
If the third digit of the serial number contains the number “1”
(example: AG1B033500001), then the TV set has been
manufactured according to B.O.M. number 1. If the third digit is
a “2” (example: AG2B0335000001), 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.
AG is Bruges), 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 2006 week 17). The 6 last digits contain the
serial number.
Figure 3-1 Serial number (example)
3.3.7Board Level Repair (BLR) 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!
3.3.8 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.
2009-Apr-03
3.4Abbreviation List
0/6/12SCART switch control signal on A/V
board. 0 = loop through (AUX to TV),
6 = play 16 : 9 format, 12 = play 4 : 3
format
AARAAutomatic Aspect Ratio Adaptation:
algorithm that adapts aspect ratio to
remove horizontal black bars; keeps
the original aspect ratio
ACIAutomatic Channel Installation:
algorithm that installs TV channels
directly from a cable network by
means of a predefined TXT page
ADCAnalogue to Digital Converter
AFCAutomatic Frequency Control: control
signal used to tune to the correct
frequency
AGCAutomatic Gain Control: algorithm that
controls the video input of the feature
box
AMAmplitude Modulation
APAsia Pacific
ARAspect Ratio: 4 by 3 or 16 by 9
ASFAuto Screen Fit: algorithm that adapts
aspect ratio to remove horizontal black
bars without discarding video
information
ATSCAdvanced Television Systems
Committee, the digital TV standard in
the USA
ATVSee Auto TV
Auto TVA hardware and software control
system that measures picture content,
and adapts image parameters in a
dynamic way
AVExternal Audio Video
AVCAudio Video Controller
AVIPAudio Video Input Processor
B/GMonochrome TV system. Sound
carrier distance is 5.5 MHz
BLRBoard-Level Repair
BTSCBroadcast Television Standard
Committee. Multiplex FM stereo sound
system, originating from the USA and
used e.g. in LATAM and AP-NTSC
countries
B-TXTBlue TeleteXT
CCentre channel (audio)
CECConsumer Electronics Control bus:
remote control bus on HDMI
connections
CLConstant Level: audio output to
connect with an external amplifier
CLRComponent Level Repair
ComPairComputer aided rePair
CPConnected Planet / Copy Protection
CSMCustomer Service Mode
CTIColor Transient Improvement:
manipulates steepness of chroma
transients
CVBSComposite Video Blanking and
Synchronization
DACDigital to Analogue Converter
DBEDynamic Bass Enhancement: extra
low frequency amplification
DDCSee “E-DDC”
D/KMonochrome TV system. Sound
carrier distance is 6.5 MHz
DFIDynamic Frame Insertion
DFUDirections For Use: owner's manual
DMRDigital Media Reader: card reader
DMSDDigital Multi Standard Decoding
DNMDigital Natural Motion
Page 7
Precautions, Notes, and Abbreviation List
EN 7Q548.1E LA3.
DNRDigital Noise Reduction: noise
reduction feature of the set
DRAMDynamic RAM
DRMDigital Rights Management
DSPDigital Signal Processing
DSTDealer Service Tool: special remote
control designed for service
technicians
DTCPDigital Transmission Content
Protection; A protocol for protecting
digital audio/video content that is
traversing a high speed serial bus,
such as IEEE-1394
DVB-CDigital Video Broadcast - Cable
DVB-TDigital Video Broadcast - Terrestrial
DVDDigital Versatile Disc
DVI(-d)Digital Visual Interface (d= digital only)
E-DDCEnhanced Display Data Channel
(VESA standard for communication
channel and display). Using E-DDC,
the video source can read the EDID
information form the display.
EDIDExtended Display Identification Data
(VESA standard)
EEPROMElectrically Erasable and
Programmable Read Only Memory
EMIElectro Magnetic Interference
EPLDErasable Programmable Logic Device
EUEurope
EXTEXTernal (source), entering the set by
SCART or by cinches (jacks)
FDSFull Dual Screen (same as FDW)
FDWFull Dual Window (same as FDS)
FLASHFLASH memory
FMField Memory or Frequency
Modulation
FPGAField-Programmable Gate Array
FTVFlat TeleVision
Gb/sGiga bits per second
G-TXTGreen TeleteXT
HH_sync to the module
HDHigh Definition
HDDHard Disk Drive
HDCPHigh-bandwidth Digital Content
Protection: A “key” encoded into the
HDMI/DVI signal that prevents video
data piracy. If a source is HDCP coded
and connected via HDMI/DVI without
the proper HDCP decoding, the
picture is put into a “snow vision” mode
or changed to a low resolution. For
normal content distribution the source
and the display device must be
enabled for HDCP “software key”
decoding.
HDMIHigh Definition Multimedia Interface
HPHeadPhone
IMonochrome TV system. Sound
2
CInter IC bus
I
2
DInter IC Data bus
I
2
I
SInter IC Sound bus
carrier distance is 6.0 MHz
IFIntermediate Frequency
IRInfra Red
IRQInterrupt Request
ITU-656The ITU Radio communication Sector
(ITU-R) is a standards body
subcommittee of the International
Telecommunication Union relating to
radio communication. ITU-656 (a.k.a.
SDI), is a digitized video format used
for broadcast grade video.
Uncompressed digital component or
digital composite signals can be used.
The SDI signal is self-synchronizing,
uses 8 bit or 10 bit data words, and has
a maximum data rate of 270 Mbit/s,
with a minimum bandwidth of 135
MHz.
ITVInstitutional TeleVision; TV sets for
hotels, hospitals etc.
LSLast Status; The settings last chosen
by the customer and read and stored
in RAM or in the NVM. They are called
at start-up of the set to configure it
according to the customer's
preferences
LATAMLatin America
LCDLiquid Crystal Display
LEDLight Emitting Diode
L/L'Monochrome TV system. Sound
carrier distance is 6.5 MHz. L' is Band
I, L is all bands except for Band I
LPLLG.Philips LCD (supplier)
LSLoudspeaker
LVDSLow Voltage Differential Signalling
MbpsMega bits per second
M/NMonochrome TV system. Sound
carrier distance is 4.5 MHz
MIPSMicroprocessor without Interlocked
Pipeline-Stages; A RISC-based
microprocessor
MOPMatrix Output Processor
MOSFETMetal Oxide Silicon Field Effect
Transistor, switching device
MPEGMotion Pictures Experts Group
MPIFMulti Platform InterFace
MUTEMUTE Line
NCNot Connected
NICAMNear Instantaneous Compounded
Audio Multiplexing. This is a digital
sound system, mainly used in Europe.
NTCNegative Temperature Coefficient,
non-linear resistor
NTSCNational Television Standard
Committee. Color system mainly used
in North America and Japan. Color
carrier NTSC M/N= 3.579545 MHz,
NTSC 4.43= 4.433619 MHz (this is a
VCR norm, it is not transmitted off-air)
NVMNon-Volatile Memory: IC containing
TV related data such as alignments
O/COpen Circuit
OSDOn Screen Display
OTCOn screen display Teletext and
Control; also called Artistic (SAA5800)
P50Project 50: communication protocol
between TV and peripherals
PALPhase Alternating Line. Color system
conditioner)
PIPPicture In Picture
PLLPhase Locked Loop. Used for e.g.
FST tuning systems. The customer
can give directly the desired frequency
PODPoint Of Deployment: a removable
CAM module, implementing the CA
system for a host (e.g. a TV-set)
PORPower On Reset, signal to reset the uP
PTCPositive Temperature Coefficient,
non-linear resistor
PWBPrinted Wiring Board (same as “PCB”)
2009-Apr-03
Page 8
EN 8Q548.1E LA3.
Precautions, Notes, and Abbreviation List
PWMPulse Width Modulation
QRCQuasi Resonant Converter
QTNRQuality Temporal Noise Reduction
QVCPQuality Video Composition Processor
RAMRandom Access Memory
RGBRed, Green, and Blue. The primary
color signals for TV. By mixing levels
of R, G, and B, all colors (Y/C) are
reproduced.
RCRemote Control
RC5 / RC6Signal protocol from the remote
control receiver
RESETRESET signal
ROMRead Only Memory
RSDSReduced Swing Differential Signalling
data interface
R-TXTRed TeleteXT
SAMService Alignment Mode
S/CShort Circuit
SCARTSyndicat des Constructeurs
d'Appareils Radiorécepteurs et
Téléviseurs
SCLSerial Clock I
SCL-FCLock Signal on Fast I
SDStandard Definition
SDASerial Data I
SDA-FDAta Signal on Fast I
2
C
2
C bus
2
C
2
C bus
SDISerial Digital Interface, see “ITU-656”
SDRAMSynchronous DRAM
SECAMSEequence Couleur Avec Mémoire.
Color system mainly used in France
and East Europe. Color carriers=
4.406250 MHz and 4.250000 MHz
SIFSound Intermediate Frequency
SMPSSwitched Mode Power Supply
SoCSystem on Chip
SOGSync On Green
SOPSSelf Oscillating Power Supply
SPISerial Peripheral Interface bus; a 4-
wire synchronous serial data link
standard
S/PDIFSony Philips Digital InterFace
SRAMStatic RAM
SRPService Reference Protocol
SSBSmall Signal Board
STBYSTand-BY
SVGA800x600 (4:3)
SVHSSuper Video Home System
SWSoftware
SWANSpatial temporal Weighted Averaging
Signalling
TXTTeleteXT
TXT-DWDual Window with TeleteXT
UIUser Interface
uPMicroprocessor
UXGA1600x1200 (4:3)
VV-sync to the module
VESAVideo Electronics Standards
Association
VGA640x480 (4:3)
VLVariable Level out: processed audio
output toward external amplifier
VSBVestigial Side Band; modulation
method
WYSIWYRWhat You See Is What You Record:
record selection that follows main
picture and sound
WXGA1280x768 (15:9)
XTALQuartz crystal
XGA1024x768 (4:3)
YLuminance signal
Y/CLuminance (Y) and Chrominance (C)
signal
YPbPrComponent video. Luminance and
scaled color difference signals (B-Y
and R-Y)
YUVComponent video
2009-Apr-03
Page 9
4.Mechanical Instructions
18560_104_090401.eps
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Mechanical Instructions
EN 9Q548.1E LA4.
Index of this chapter:
Cable Dressing
4.1
4.2 Service Positions
4.3 Assy/Panel Removal
4.4 Set Re-assembly
4.1Cable Dressing
Notes:
•Figures below can deviate slightly from the actual situation,
due to the different set executions.
Figure 4-1 Cable dressing 32PFL7404H/12
Figure 4-2 Cable dressing 42PFL7404H/12
2009-Apr-03
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EN 10Q548.1E LA4.
18560_101_090401.eps
090402
Mechanical Instructions
Figure 4-3 Cable dressing 47PFL7404H/12
2009-Apr-03
Figure 4-4 Cable dressing 52PFL7404H/12
18560_100_090401.eps
090401
Page 11
Mechanical Instructions
18560_103_090401.eps
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18560_105_090401.eps
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EN 11Q548.1E LA4.
Figure 4-5 Cable dressing 32PFL8404H/12
Figure 4-6 Cable dressing 37PFL8404H/12
2009-Apr-03
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Mechanical Instructions
Figure 4-7 Cable dressing 42PFL8404H/12
2009-Apr-03
Figure 4-8 Cable dressing 47PFL8404H/12
Page 13
4.2Service Positions
E_06532_018.eps
171106
1
Required for sets
42"
1
18560_408_090401.eps
090402
3
1
2
1
1
3
1
2
2
For easy servicing of this set, there are a few possibilities
created:
•The buffers from the packaging.
•Foam bars (created for Service).
4.2.1 Foam Bars
Mechanical Instructions
EN 13Q548.1E LA4.
Figure 4-9 Foam bars
The foam bars (order code 3122 785 90580 for two pieces) can
be used for all types and sizes of Flat TVs.
See figure Figure 4-9
for details. Sets with a display of 42" and
larger, require four foam bars [1]. Ensure that the foam bars
are always supporting the cabinet and never only the display.
Caution: Failure to follow these guidelines can seriously
damage the display!
By laying the TV face down on the (ESD protective) foam bars,
a stable situation is created to perform measurements and
alignments. By placing a mirror under the TV, you can monitor
the screen.
4.3Assy/Panel Removal
The instructions apply to the 8000 series (Roadrunner - with
AmbiLight).
4.3.1 Rear Cover
Warning: Disconnect the mains power cord before you remove
the rear cover.
Note: it is not necessary to remove the stand while removing
the rear cover.
1. Remove all screws of the rear cover.
2. Lift the rear cover from the TV. Make sure that wires and
4.3.2Speakers
Each speaker unit is mounted with two screws.
When defective, replace the whole unit.
4.3.3Ambi Light
Each Ambi Light unit is mounted on a subframe. Refer to
Figure 4-10
flat coils are not damaged while lifting the rear cover from
the set.
for details.
Figure 4-10 Ambi Light unit
1. Remove the Ambi Light cover [1].
2. Unplug the connector(s) [2].
3. Remove the subframe [3].
4. The PWB can now be taken from the subframe.
When defective, replace the whole unit.
4.3.4Main Supply Panel
1. Unplug all connectors.
2. Remove the fixation screws.
3. Take the board out.
When defective, replace the whole unit.
4.3.5IR & LED Board / Stand Support
Refer to Figure 4-11
for details.
2
1
18560_109_090401.eps
090402
Figure 4-11 IR & LED Board / Stand Support
1. Remove the stand.
2. Remove the IR/LED cover [1].
3. Remove the connectors on the IR/LED board.
4. Remove the fixation screws from the IR/LED board.
When defective, replace the whole unit.
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4
2
44
3
Stand Support Removal for LCD panel removal
1. Remove the Main Supply Panel as earlier described.
2. Remove the screws [2] and take the support out.
4.3.6Small Signal Board (SSB)
Caution: It is mandatory to remount screws at their original
position during re-assembly. Failure to do so may result in
damaging the SSB.
1. Unplug all connectors.
2. Remove the screws that secure the board.
3. The SSB can now be taken out of the set.
4.3.7 Keyboard Control Panel
1. Remove the right AmbiLight unit.
2. Follow instructions for removing the IR/LED board until 3.
3. Remove the connector on the IR/LED board.
4. Release the cable.
5. Release the clip on top of the unit and take the unit out.
When defective, replace the whole unit.
4.3.8 LCD Panel
Mechanical Instructions
Refer to Figure 4-12
to Figure 4-15 for details.
1. Remove the AmbiLight units as earlier described.
2. Remove the subwoofer as earlier described.
3. Remove the Top Support [1].
4. Release the LVDS [2] - and other connectors [3] from the
SSB.
5. Remove the subframe of the SSB [4] with the SSB still
mounted on it.
6. Release all connectors [5] from the PSU.
7. Remove the subframe of the PSU [6] with the PSU still
mounted on it.
8. Remove the stand support as earlier described.
9. Release the connectors [7] on the IR/LED Panel as earlier
described.
10. Remove the clips that secure the flare [8].
11. Remove the flare.
12. Now the LCD Panel can be lifted from the front cabinet.
Figure 4-13 LCD Panel - SSB subframe
6
5
6
5
5
5
18560_112_090401.eps
6
6
090402
2009-Apr-03
Figure 4-12 LCD Panel - top support
Figure 4-14 LCD Panel - PSU subframe
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Mechanical Instructions
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EN 15Q548.1E LA4.
4.4Set Re-assembly
To re-assemble the whole set, execute all processes in reverse
order.
Notes:
•While re-assembling, make sure that all cables are placed
and connected in their original position.
See Figure 4-1
•Pay special attention not to damage the EMC foams in the
set. Ensure that EMC foams are mounted correctly.
, Figure 4-2 and Figure 4-3
Figure 4-15 LCD Panel - panel removal
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Service Modes, Error Codes, and Fault Finding
5.Service Modes, Error Codes, and Fault Finding
Index of this chapter:
Test Points
5.1
5.2 Service Modes
5.3 Step by step Start-up
5.4 Service Tools
5.5 Error Codes
5.6 The Blinking LED Procedure
5.7 Protections
5.8 Fault Finding and Repair Tips
5.9 Software Upgrading
5.1Test Points
As most signals are digital, it will be difficult to measure
waveforms with a standard oscilloscope. However, 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.
5.2Service 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.
•All service-unfriendly modes (if present) are disabled, like:
– (Sleep) timer.
– Child/parental lock.
– Picture mute (blue mute or black mute).
– Automatic volume levelling (AVL).
– Skip/blank of non-favourite pre-sets.
How to Activate SDM
For this chassis there are two kinds of SDM: an analog SDM
and a digital SDM. Tuning will happen according to Table 5-1
•AnalogSDM: use the standard RC-transmitter and key in
the code “062596”, directly followed by the “MENU” (or
HOME) button.
Note: It is possible that, together with the SDM, the main
menu will appear. To switch it “off”, push the “MENU” (or
HOME) button again.
•DigitalSDM: use the standard RC-transmitter and key in
the code “062593”, directly followed by the “MENU” (or
HOME) button.
Note: It is possible that, together with the SDM, the main
menu will appear. To switch it “off”, push the “MENU” (or
HOME) button again.
•AnalogSDM can also be activated by, on the SSB,
shorting for a moment the solder pads SDM [1] (see
Figure 5-1
).
.
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 5.4.1
Note: For the new model range, a new remote control (RC) is
used with some renamed buttons. This has an impact on the
activation of the Service modes. For instance the old “MENU”
button is now called “HOME” (or is indicated by a “house” icon).
5.2.1 Service Default Mode (SDM)
Purpose
•To create a pre-defined setting, to get the same
measurement results as given in this manual.
•To override SW protections detected by stand-by
processor and make the TV start up to the step just before
protection (a sort of automatic step by step start up). See
section 5.3
•To start the blinking LED procedure where only layer 2
errors are displayed (see also section 5.5
Specifications
Table 5-1 SDM default settings
ComPair).
Step by step Start-up.
RegionFreq. (MHz)
Europe, AP(PAL/Multi)475.25PAL B/G
Europe, AP DVB-T546.00 PID
Video: 0B 06 PID
PCR: 0B 06 PID
Audio: 0B 07
Error Codes).
Default
system
DVB-T
Figure 5-1 Service mode pads
After activating this mode, “SDM” will appear in the upper right
corner of the screen (when a picture is available).
How to Navigate
When the “MENU” (or HOME) button is pressed on the RC
transmitter, the set will toggle between the SDM and the normal
user menu (with the SDM mode still active in the background).
How to Exit SDM
Use one of the following methods:
•Switch the set to STAND-BY via the RC-transmitter.
•Via a standard customer RC-transmitter: key in “00”sequence.
•All picture settings at 50% (brightness, colour, contrast).
•All sound settings at 50%, except volume at 25%.
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Service Modes, Error Codes, and Fault Finding
PHILIPS
MODEL:
32PF9968/10
PROD.SERIAL NO:
AG 1A0620 000001
040
39mm
27mm
(CTN Sticker)
Display Option
Code
E_06532_038.eps
240108
EN 17Q548.1E LA5.
5.2.2 Service Alignment Mode (SAM)
Purpose
•To perform (software) alignments.
•To change option settings.
•To easily identify the used software version.
•To view operation hours.
•To display (or clear) the error code buffer.
How to Activate SAM
Via a standard RC transmitter: key in the code “062596”
directly followed by the “INFO” or “I+” button. After activating
SAM with this method a service warning will appear on the
screen, continue by pressing the red button on the RC.
Contents of SAM (see also Table 6-5
•Hardware Information
– A. SW Version. Displays the software version of the
main software (example: Q5431-0.26.2.0=
AAAaB_X.Y.W.Z).
•AAAA= the chassis name, where “a” indicates the
chip version: e.g. TV543/32= Q543, TV543/82=
Q548, Q543/92= Q549.
•B= the SW branch version. This is a sequential
number (this is no longer the region indication, as
the software is now multi-region).
•X.Y.W.Z= the software version, where X is the
main version number (different numbers are not
compatible with one another) and Y.W.Z is the sub
version number (a higher number is always
compatible with a lower number).
– B. SBY PROC Version. Displays the software version
of the stand-by processor.
– C. Production Code. Displays the production code of
the TV, this is the serial number as printed on the back
of the TV set. Note that if an NVM is replaced or is
initialized after corruption, this production code has to
be re-written to NVM. ComPair will foresee in a
possibility to do this.
•Operation Hours. Displays the accumulated total of
operation hours (not the stand-by hours). Every time the
TV is switched “on/off”, 0.5 hours is added to this number.
•Errors (followed by maximum 10 errors). The most recent
error is displayed at the upper left (for an error explanation
see section 5.5
•Reset Error Buffer. When “cursor right” (or the “OK
button) is pressed and then the “OK” button is pressed, the
error buffer is reset.
•Alignments. This will activate the “ALIGNMENTS” submenu. See chapter 6.
•Dealer Options. Extra features for the dealers. See Table
6-5.
•Options. Extra features for Service. For more information
regarding option codes, see chapter 6.
Note that if the option code numbers are changed, these
have to be confirmed with pressing the “OK” button before
the options are stored. Otherwise changes will be lost.
•Initialize NVM. The moment the processor recognizes a
corrupted NVM, the “initialize NVM” line will be highlighted.
Now, two things can be done (dependent of the service
instructions at that moment):
– Save the content of the NVM via ComPair for
development analysis, before initializing. This will give
the Service department an extra possibility for
diagnosis (e.g. when Development asks for this).
– Initialize the NVM.
•Note: When the NVM is corrupted, or replaced, there is a
high possibility that no picture appears because the display
code is not correct. So, before initializing the NVM via the
SAM, a picture is necessary and therefore the correct
display option has to be entered.
Refer to chapter 6.
option, it’s advised to use ComPair (the correct HEX values
):
Error Codes).
Alignments.
Alignments.
Alignments for details. To adapt this
for the options can be found in chapter 8 “Alignments”) or
a method via a standard RC (described below).
Changing the display option via a standard RC: Key in the
code “062598” directly followed by the “MENU” (or HOME)
button and “XXX” (where XXX is the 3 digit decimal display
code as mentioned in Table 6-4
. Make sure to key in all three
digits, also the leading zero’s. If the above action is successful,
the front LED will go out as an indication that the RC sequence
was correct. After the display option is changed in the NVM, the
TV will go to the Stand-by mode. If the NVM was corrupted or
empty before this action, it will be initialized first (loaded with
default values). This initializing can take up to 20 seconds.
Figure 5-2 Location of Display Option Code sticker
•Store - go right. All options and alignments are stored
when pressing “cursor right” (or the “OK” button) and then
the “OK”-button.
•SW Maintenance.
– SW Events. Not useful for Service purposes. In case
of specific software problems, the development
department can ask for this information.
– HW Events. Not useful for Service purposes. In case
of specific software problems, the development
department can ask for this information.
•Test settings. For development purposes only.
•Development file versions. Not useful for Service
purposes, this information is only used by the development
department.
•Upload to USB. To upload several settings from the TV to
an USB stick, which is connected to the SSB. The items are
“Channel list”, “Personal settings”, “Option codes”,
“Display-related alignments” and “History list”. First a
directory “repair\” has to be created in the root of the
USB stick. To upload the settings select each item
separately, press “cursor right” (or the “OK button), confirm
with “OK” and wait until “Done” appears. In case the
download to the USB stick was not successful “Failure” will
appear. In this case, check if the USB stick is connected
properly and if the directory “repair” is present in the root of
the USB stick. Now the settings are stored onto the USB
stick and can be used to download onto another TV or
other SSB. Uploading is of course only possible if the
software is running and if a picture is available. This
method is created to be able to save the customer’s TV
settings and to store them into another SSB.
•Download from USB. To download several settings from
the USB stick to the TV. Same way of working as with
uploading. To make sure that the download of the channel
list from USB to the TV is executed properly, it is necessary
to restart the TV and tune to a valid preset if necessary.
Note: The “History list item” can not be downloaded from
USB to the TV. This is a “read-only” item. In case of
specific problems, the development department can ask
for this information.
How to Navigate
•In SAM, the menu items can be selected with the
“CURSOR UP/DOWN” key (or the scroll wheel) on the RCtransmitter. The selected item will be highlighted. When not
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Service Modes, Error Codes, and Fault Finding
all menu items fit on the screen, move the “CURSOR UP/
DOWN” key to display the next/previous menu items.
•With the “CURSOR LEFT/RIGHT” keys (or the scroll
wheel), it is possible to:
– (De) activate the selected menu item.
– (De) activate the selected sub menu.
•With the “OK” key, it is possible to activate the selected
action.
How to Exit SAM
Use one of the following methods:
•Switch the set to STAND-BY via the RC-transmitter.
•Via a standard RC-transmitter, key in “00” sequence, or
select the “BACK” key.
5.2.3 Customer Service Mode (CSM)
Purpose
When a customer is having problems with his TV-set, he can
call his dealer or the Customer Helpdesk. The service
technician can then ask the customer to activate the CSM, in
order to identify the status of the set. Now, the service
technician can judge the severity of the complaint. In many
cases, he can advise the customer how to solve the problem,
or he can decide if it is necessary to visit the customer.
The CSM is a read only mode; therefore, modifications in this
mode are not possible.
When CSM is activated, the layer 1 error is displayed via
blinking LED. Only the latest error is displayed. (see also
section 5.5
When CSM is activated and there is a USB stick connected to
the TV, the software will dump the complete CSM content to the
USB stick. The file (Csm.txt) will be saved in the root of the USB
stick. This information can be handy if no information is
displayed.
Only for Q548.1:
When in the Q548.1 chassis CSM is activated, a test pattern
will be displayed during 5 s.: 1 s. blue, 1 s. green, and 1 s. red,
then again 1 s. blue and 1 s. green. This test pattern is
generated by the PNX5120.
So if this test pattern is shown, it could be determined that the
back end video chain (PNX5120, LVDS, and display) of the
SSB is working.
For LED backlight TV sets, the test pattern is build as follows:
1 s. blue, 1 s. green, 1 s. red (generated by the PNX5120) and
further on with 3 seconds RGB pattern from the LED Dimming
Panel.
How to Activate CSM
Key in the code “123654” via the standard RC transmitter.
Note: Activation of the CSM is only possible if there is no (user)
menu on the screen!
How to Navigate
By means of the “CURSOR-DOWN/UP” knob (or the scroll
wheel) on the RC-transmitter, can be navigated through the
menus.
Contents of CSM
The contents are displayed on three pages: General, Software
versions, and Quality items. However, these group names itself
are not shown anywhere in the CSM menu.
General
•Set Type. This information is very helpful for a helpdesk/
Error Codes).
workshop as reference for further diagnosis. In this way, it
is not necessary for the customer to look at the rear of the
TV-set. Note that if an NVM is replaced or is initialized after
corruption, this set type has to be re-written to NVM.
ComPair will foresee in a possibility to do this.
•Production Code. Displays the production code (the serial
number) of the TV. Note that if an NVM is replaced or is
initialized after corruption, this production code has to be
re-written to NVM. ComPair will foresee a in possibility to
do this.
•Installed date. Indicates the date of the first installation of
the TV. This date is acquired via time extraction.
•Options 1. Gives the option codes of option group 1 as set
in SAM (Service Alignment Mode).
•Options 2. Gives the option codes of option group 2 as set
in SAM (Service Alignment Mode).
•12NC SSB. Gives an identification of the SSB as stored in
NVM. Note that if an NVM is replaced or is initialized after
corruption, this identification number has to be re-written to
NVM. ComPair will foresee in a possibility to do this. This
identification number is the 12nc number of the SSB.
Remark: the content here can also be a part of the 12NC of
the SSB in combination with the serial number.
•12NC display. Shows the 12NC of the display
•12NC supply. Shows the 12NC of the supply.
•12NC “fan board”. Shows the 12NC of the “fan board”module (for sets with LED backlight).
•12NC “LED Dimming Panel”. Shows the 12NC of the
LED dimming Panel (for sets with LED backlight).
Software versions
•Current main SW. Displays the built-in main software
version. In case of field problems related to software,
software can be upgraded. As this software is consumer
upgradeable, it will also be published on the Internet.
Example: Q5431E_1.2.3.4.
•Stand-by SW. Displays the built-in stand-by processor
software version. Upgrading this software will be possible
via ComPair or via USB (see section Software U
Example: STDBY_1.2.3.4.
•MPEG4 software. Displays the MPEG4 software (for sets
with MPEG4).
•PNX5120 boot NVM. Displays the SW-version that is used
in the PNX5120 boot NVM (for sets with PNX5120).
•LED Dimming SW. Displays the LED dimming EPLD SW
(for sets with LED backlight).
Quality items
•Signal quality. Poor/average/good
•Child lock. Not active/active. This is a combined item for
locks. If any lock (Preset lock, child lock, lock after or
parental lock) is active, the item shall show “active”.
•HDMI HDCP key. Indicates of the HDMI keys (or HDCP
keys) are valid or not. In case these keys are not valid and
the consumer wants to make use of the HDMI functionality,
the SSB has to be replaced.
•Ethernet MAC address. Not applicable.
•Wireless MAC address. Not applicable.
•BDS key. Indicates if the “BDS level 1” key is valid or not.
•CI slot present. If the common interface module is
detected the result will be “YES”, else “NO”.
•HDMI input format. The detected input format of the
HDMI.
•HDMI audio input stream. The HDMI audio input stream
is displayed: present / not present.
•HDMI video input stream. The HDMI video input stream
is displayed: present / not present.
How to Exit CSM
Press the “MENU” (or HOME) button twice on the RCtransmitter.
pgrading).
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Service Modes, Error Codes, and Fault Finding
18440_215_090227.eps
270209
Active
Semi
St by
St by
Mains
on
Mains
off
GoToProtection
- WakeUp requested
- Acquisition needed
- Tact switch pushed
- stby requested and
no data Acquisition
required
-St by requested
- tact SW pushed
WakeUp
requested
Protection
WakeUp
requested
(SDM)
GoToProtection
Hibernate
- Tact switch pushed
- last status is hibernate
after mains ON
Tact switch
pushed
EN 19Q548.1E LA5.
5.3Step by step Start-up
When the TV is in a protection state due to an error detected by
stand-by software (error blinking is displayed) and SDM is
activated via short cutting the pins on the SSB, the TV starts up
until it reaches the situation just before protection. So, this is a
kind of automatic step by step start-up. In combination with the
start-up diagrams below, it is shown which supplies are present
at a certain moment. Important to know is, that if e.g. the 3V3
detection fails and thus layer 2 error = 18 is blinking while the
TV is restarted via SDM, the Stand-by Processor will enable
the 3V3, but the TV set will not go to protection now. The TV
will stay in this situation until it is reset (Mains/AC Power supply
interrupted).
Caution: in case the start-up in this mode with a faulty FET
7101-1 is done, all ICs supplied by the +3V3 could be
destroyed, due to over voltage (12V on 3V3-line). It is
recommended to measure first the FET 7101-1 or others FETs
on short-circuit before activating SDM via the service pads.
The abbreviations “SP” and “MP” in the figures stand for:
•SP: protection or error detected by the Stand-by
Processor.
•MP: protection or error detected by the MIPS Main
Processor.
Figure 5-3 Transition diagram
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270209
No
EJTAG probe
connected ?
No
Yes
ReleaseAVCsystem reset
Feed warm boot script
Cold boot?
Yes
No
Set I²C slave address
of StandbyµPto(A0h)
An EJTAG probe (e.g. WindPower ICE probe) can be
connected for Linux Kernel debugging purposes.
This will allow access to NVM and
NAND FLASH and cannotbedone
earlier becausetheFLASH needs to
be in Write Protect as long as the
suppliesare not available.
-keepreset-NVM high, Audio-reset and Audio-Mute-Up HIGH
Off
Standby Supply starts running.
All standby supply voltagesbecome available.
st-byµPresets
Stand byor
Protec tio n
Mains isapplied
- Switch Audio-Reset high.
It is low in the standby mode if the standby
mode lasted longer than10s.
start keyboard scanning, RC detection. Wake upreasonsare
off.
If the protection state was left by short circuiting the
SDM pins, detection of a protection condition during
startup will stall the startup. Protection conditions in a
playing set will be ignored. The protection mode will
not be entered.
Switch LOW the RESET-NVM line to allow access to NVM. (Add a
2ms delay before trying to address the NVM to allow correct NVM
initialization, this is no issueinthissetup, the delayisautomatically
covered by the architectural setup)
ReleaseReset-PNX5100.
PNX5100 will start booting.
This 10ms delayisstill present to give some relaxation
to the supplies.(ThePCIarbiter on the PNX5100 is
never used and is not the reason anymore)
Switch HIGH the WP-NandFlashto
allow access to NAND Flash
This enables the +3V3and+5V converter. Asa
result, also+5V-tuner, +2V5, +1V8-PNX8541 and
+1V8-PNX5100 (if present) become available.
Confirmation received from NXP that there does not need to
be a delay between the riseofthe+1V2and the +3V3.Only
requirement is to have the +1V2 before or atthesametime
as the +3V3.150msdelayisdeleted.
Delayo
f50msneeded becauseofthelatencyof
the detect-1 circuit. This delayisalsoneeded for
the PNX5100. The reset of the PNX5100 should
only bereleased 10msafter powering the IC.
Detect2 should bepolledonthestandard40ms
interval and startup should becontinuedwhen
detect2 becomes high.
+12V, +24Vs,ALand Bolt-on power
isswitched on, followed by the +1V2 DCDC converter
Enable the supply detection algorithm
No
Yes
Detect-1 I/O line
High?
Switch ON Platform and display supply by switching
LOW the Standbyline.
Enable the DCDC converter for +3V3and
+5V. (ENABLE-3V3)
Voltage output error:
Layer1: 2
Layer2: 18
No
Detect2 high received
within 2 seconds?
Power-OK error:
Layer1: 3
Layer2: 16
Enter p rot ection
Yes
Wait 50ms
Enter protection
Yes
No
Detect-2 I/O line
High?
Disable 3V3, switch standby
line high and wait 4 seconds
Delay1.5second before checking detect2 line
if the detect2_delay_flagisset
Set detect2_delay_flag
Reset detect2_delay_flag
Carefull we don’t hit this error
directly if the delayflagisset.
Wait fixed time of 15ms
Detect2 high?
Yes
No
Detect-1 I/O line
High?
Wait 50ms
No
Yes
If the supply is hicking, the firstdetect2could
bepositive (12V still present), followed by
negative Supply-fault (already low). Adding a
fixed delay bringsusbehind this delaygap.
These checks prevent the set from going in to
standbyonthefalse error condition where the
first 3V3 is negative becauseofahickup,
although the 12V was abouttoreappear.
Becauseofthis reappearance,
the 12V check
is OK which would cause protection. If we wait
50ms,the3V3shouldbe back as well.
Detect-2 I/O line
High?
Yes
No
Reset detect2_delay_flag
Only usefull in case of PNX5100 present. To avoid
diversity in standbyµP,thereset-PNX5100 will still beswitched bythestandbyµP.
To: 18440_216b_090227.eps
To: 18440_216b_090227.eps
Wait 10 ms
Service Modes, Error Codes, and Fault Finding
2009-Apr-03
Figure 5-4 “Off/Stand-by” to “Semi Stand-by” flowchart (part 1)
Page 21
Service Modes, Error Codes, and Fault Finding
18440_216b_090227.eps
270209
Yes
MIPS reads the wake upreason
from standbyµP.
Semi-Standby
Initialize tuner and Multi Standard decoder
Initialize video processing IC's
:
-localcontrast FPGA
-PNX5100(ifpresent)
Initialize source selection
Init ialize AutoTV
3-th try?
Blink Code as
error code
Bootscript ready
in 1250 ms?
Yes
No
Enable Alive check mechanism
Wait until AVC starts to
communicate
SW initialization
succeeded
within 20s?
No
Switch Standby I/O line high
and wait 4 seconds
RPC start (comm. protocol)
Set I²C slave address
of StandbyµPto(60h)
Yes
Disable all supply related protectionsand
switch off the +3V3 +5V DC/DC converter.
switch off the remaining DC/DC
converters
Wait 5ms
Switch AVC PNX8543
in reset (active low)
Wait 10ms
Switch the NVM reset
line HIGH.
FlashtoRam
image transfer succeeded
within 30s?
No
Yes
Code =
Layer1: 2
Layer2: 53
Code =
Layer1: 2
Layer2: 15
Initialize Ambilight with Lights off.
Timing need to be updated if
more mature info isavailable.
Timing needs tobe updated if more
mature info isavailable.
Timing needs to beupdated if more
mature info isavailable.
Initialize audio
Enter protection
Reset-system isswitched HIGH bythe
AVC attheendofthebootscript
AVC releases Reset-Ethernet when the
end of the AVC boot-script is detected
This cannot be done through the bootscript,
the I/O is on the standbyµP
Reset-system is connectedtothe
Micronas MultiStandard decoder.
Reset-Audio and Audio-Mute-Up are
switched byMIPS code lateroninthe
startup process
Reset-system isswitched HIGH bythe
AVC attheendofthebootscript
AVC releases Reset-Ethernet when the
end of the AVC boot-script is detected
Reset-Audio and Audio-Mute-Up are
switched byMIPS code lateroninthe
startupprocess
Switch on the displayincaseofa LED backlight
display by sending the TurnOnDisplay(1) (I²C)
command to the PNX5100
In caseofa LED backlight display, a LED DIM panel is present
which is fed bytheVdisplay. To power the LED DIM Panel, the
Vdisplay switch driven by the PNX5100 must beclosed. The
display startup sequence is taken care of bytheLEDDIM
panel. Secondly,
this cmd will alsoenable the LVDS outputof
the 5100 towards the LED DIM panel.
Enable the PWM output towards the displayLVDS
cable in caseofa LED Backlight set.
(CTRL4-PNX5100)
In caseofa LED backlight display, the PWM-dimming signal
needs to berouted to the LVDS cable. This routing is notallowed in non-LED sets (see alsodisplay configuration)
Wake upreason
coldboot & not semi-
standby?
5100 SW start
MIPSsends displayparametersand
Bitmap to 5100
Startup screen cfg file
present?
MIPS triggers 5100 to displaythe
startup screen
Startup screen visible
yes
yes
To keep this flowchart readable, the exact displayturn on
description is not copied here. Please see the Semi-standby
to On description for the detailed display startup sequence.
During the complete displaytimeoftheStartup screen, the
preheat condition of 100% PWM is valid.
No
No
Startup screen shall only bevisiblewhen there isacoldboot
to an active state end situation. The startup screen shall not
bevisiblewhen waking upforreboot reasons or waking upto
semi-standby conditions.
The firsttimeafter the option turn on of the startup screen or
when the set is virgin, the cfg file is not present and
hence
the startup screen will not be shown.
From : 18440_216a_090227.eps
From: 18440_216a_090227.eps
EN 21Q548.1E LA5.
Figure 5-5 “Off/Stand-by” to “Semi Stand-by” flowchart (part 2)
2009-Apr-03
Page 22
EN 22Q548.1E LA5.
Active
Semi Standby
Initialize audio and video
processing IC's and functions
according needed use case.
Assert RGB video blanking
and audio mute
Wait until previous on-state is left more than 2
seconds ago. (to prevent LCD display problems)
The assumption here is that a fast toggle (<2s) can
only happen during ON->SEMI ->ON. In these states,
the AVC is still active and can provide the 2s delay. A
transition ON->SEMI->STBY->SEMI->ON cannot be
made in less than 2s, because the standby state will
be maintained for at least 4s.
Switch Audio-Reset low and wait 5ms
Constraints taken into account:
- Display may only be started when valid LVDS output clock can be delivered by the AVC.
- To have a reliable operation of the backlight, the backlight should be driven with a PWM duty cycle of 100%
during the first seconds. Only after this first one or two seconds, the PWM may be set to the required output level
(Note that the PWM output should be present before the backlight is switched on). To minimize the artefacts, the
picture should only be unblanked after these first seconds.
Restore dimming backlight feature, PWM and BOOST output
and unblank the video.
Wait until valid and stable audio and video, corresponding to the
requested output is delivered by the AVC
AND
the backlight has been switched on for at least the time which is
indicated in the display file as preheat time.
The higher level requirement is that audio and video
should be demuted without transient effects and that
the audio should be demuted maximum 1s before or
at the same time as the unblanking of the video.
Release audio mute and wait 100ms before any other audio
handling is done (e.g. volume change)
CPipe already generates a valid output
clock in the semi-standby state: display
startup can start immediately when leaving
the semi-standby state.
Switch on LCD backlight (Lamp-ON)
Switch off the dimming backlight feature, set
the BOOST control to nominal and make sure
PWM output is set to 100%
Switch on the display by sending the
TurnOnDisplay(1) (I²C) cmd to the PNX5100
Switch on the Ambilight functionality according the last status
settings.
The higher level requirement is that the
ambilight functionality may not be switched on
before the backlight is turned on in case the
set contains a CE IPB inverter supply.
Delay Lamp-on with the sum of the LVDS delay and
the Lamp delay indicated in the display file
PNX5100 present?
Yes
Switch on the display power by
switching LCD-PWR-ON low
Wait x ms
Switch on LVDS output in 8543
No
The exact timings to
switch on the
display (LVDS
delay, lamp delay)
are defined in the
display file.
Start POK line detection
algorithm
return
The complete algorithm description is
removed here.
Only the start of the algorithm
is mentioned here as reminder.
The sum of the LVDS delay and the Lamp delay needs
to be used because the Lamp delay is specified with
the appearance of the LVDS on the display as
reference. This moment is not known by ceplf, only the
switch on of the LCD power is known. The delta
between both is the LVDS delay.
Display already on?
(splash screen)
No
Yes
Display cfg file present
and up to date, according
correct display option?
Startup screen Option
and Installation setting
Photoscreen ON?
Yes
No
Prepare Start screen Display config
file and copy to Flash
No
Yes
18440_217_090227.eps
270209
Service Modes, Error Codes, and Fault Finding
2009-Apr-03
Figure 5-6 “Semi Stand-by” to “Active” flowchart
Page 23
Service Modes, Error Codes, and Fault Finding
18440_219_090227.eps
270209
Semi Standby
Active
Wait x ms (display file)
Mute all sound outputs via softmute
Mute all video outputs
Switch off LCD backlight
Force ext audio outputs to ground
(I/O: audio reset)
and wait 5ms
Switch off the display by sending:
- TurnOnDisplay(0) (I²C) command to the PNX5100
- or sending OUTPUT-ENABLE(0) to the LED DIM
panel in case of a LED BL set.
Switch off Ambilight
Set main amplifier mute (I/O: audio-mute)
Wait 100ms
Wait until Ambilight has faded out: Output power
Observer on PNX5100 should be zero
The higher level requirement is that the
backlight may not be switched off before the
ambilight functionality is turned off in case the
set contains a CE IPB inverter supply.
PNX5100 present?
Yes
No
Switch off the display power by
switching LCD-PWR-ON high
Wait x ms
Switch off LVDS output in 8543
The exact timings to
switch off the
display (LVDS
delay, lamp delay)
are defined in the
display file.
Switch off POK line detection
algorithm
EN 23Q548.1E LA5.
Figure 5-7 “Active” to “Semi Stand-by” flowchart
2009-Apr-03
Page 24
EN 24Q548.1E LA5.
18440_220_090227.eps
270209
Transfer Wake up reasons to the Stand by µP.
Stand by
Semi Stand by
Disable all supply related protections and switch off
the DC/DC converters (ENABLE-3V3)
Switch OFF all supplies by switching HIGH the
Standby I/O line
Switch AVC system in reset state (reset-system and
Delay transition until ramping down of ambient light is
finished. *)
If ambientlight functionality was used in semi-standby
(lampadaire mode), switch off ambient light
*) If this is not performed and the set is
switched to standby when the switch off of
the ambilights is still ongoing, the lights will
switch off abruptly when the supply is cut.
Switch Memories to self-refresh (this creates a more
stable condition when switching off the power).
Service Modes, Error Codes, and Fault Finding
2009-Apr-03
Figure 5-8 “Semi Stand-by” to “Stand-by” flowchart
Page 25
Service Modes, Error Codes, and Fault Finding
E_06532_036.eps
150208
TO
UART SERVICE
CONNECTOR
TO
UART SERVICE
CONNECTOR
TO
I2C SERVICE
CONNECTOR
TO TV
PC
HDMI
I
2
C only
Optional power
5V DC
ComPair II Developed by Philips Brugge
RC out
RC in
Optional
Switch
PowerModeLink/
Activity
I
2
C
ComPair II
Multi
function
RS232 /UART
EN 25Q548.1E LA5.
5.4Service Tools
5.4.1 ComPair
Introduction
ComPair (Computer Aided Repair) is a Service tool for Philips
Consumer Electronics products. and offers the following:
1. ComPair helps to quickly get an understanding on how to
repair the chassis in a short and effective way.
2. ComPair allows very detailed diagnostics and is therefore
capable of accurately indicating problem areas. No
knowledge on I
because ComPair takes care of this.
3. ComPair speeds up the repair time since it can
automatically communicate with the chassis (when the uP
is working) and all repair information is directly available.
4. ComPair features TV software up possibilities.
Specifications
ComPair consists of a Windows based fault finding program
and an interface box between PC and the (defective) product.
The ComPair II interface box is connected to the PC via an
USB cable. For the TV chassis, the ComPair interface box and
the TV communicate via a bi-directional cable via the service
connector(s).
The ComPair fault finding program is able to determine the
problem of the defective television, by a combination of
automatic diagnostics and an interactive question/answer
procedure.
How to Connect
This is described in the chassis fault finding database in
ComPair.
Figure 5-9 ComPair II interface connection
Caution: It is compulsory to connect the TV to the PC as
shown in the picture above (with the ComPair interface in
between), as the ComPair interface acts as a level shifter. If
one connects the TV directly to the PC (via UART), ICs will be
blown!
How to Order
ComPair II order codes:
•ComPair II interface: 3122 785 91020.
•Software is available via the Philips Service web portal.
•ComPair serial interface cable for Q52x.x.
(using 3.5 mm Mini Jack connectors): 3138 188 75051.
Note: When having problems, please contact your local
support desk.
2
C or UART commands is necessary,
5.5Error Codes
5.5.1Introduction
The error code buffer contains all detected errors since the last
time the buffer was erased. The buffer is written from left to
right, new errors are logged at the left side, and all other errors
shift one position to the right.
When an error occurs, it is added to the list of errors, provided
the list is not full. When an error occurs and the error buffer is
full, then the new error is not added, and the error buffer stays
intact (history is maintained).
To prevent that an occasional error stays in the list forever, the
error is removed from the list after more than 50 hrs. of
operation.
When multiple errors occur (errors occurred within a short time
span), there is a high probability that there is some relation
between them.
New in this chassis is the way errors can be displayed:
There is a simple blinking LED procedure for board level repair
(home repair) so called LAYER 1 errors next to the existing
errors which are LAYER 2 errors (see Table 5-3
– LAYER 1 errors are one digit errors
– LAYER 2 errors are two digit errors.
•In protection mode.
– From consumer mode: LAYER 1.
– From SDM mode: LAYER 2.
•Fatal errors, if I
and SAM are not selectable.
– From consumer mode: LAYER 1.
– From SDM mode: LAYER 2.
Important remark:
For all errors detected by MIPS which are fatal =>
rebooting of the TV set (reboot starts after LAYER 1
error blinking), one should short the solder paths at
start-up from the power OFF state by mains
interruption and not via the power button to trigger the
SDM via the hardware pins.
•In CSM mode
– When entering CSM: error LAYER 1 will be displayed
by blinking LED. Only the latest error is shown.
•In SDM mode
– When SDM is entered via Remote Control code or the
hardware pins, LAYER 2 is displayed via blinking LED.
•In the ON state
– In “Display error mode”, set with the RC commands
“mute_06250X _OK” LAYER 2 errors are displayed via
blinking LED.
•Error display on screen.
– In CSM no error codes are displayed on screen.
– In SAM the complete error list is shown.
Basically there are three kinds of errors:
•Errors detected by the Stand-by software which lead to protection. These errors will always lead to protection and
an automatic start of the blinking LED LAYER 1 error.
(see section 5.6
•Errors detected by the Stand-by software which not lead to protection. In this case the front LED should blink
the involved error. See also section
that it can take up several minutes before the TV starts
blinking the error (e.g. LAYER 1 error = 2, LAYER 2
error = 15 or 53).
•Errors detected by main software (MIPS). In this case
the error will be logged into the error buffer and can be read
out via ComPair, via blinking LED method LAYER 1-2
error, or in case picture is visible, via SAM.
2
C bus is blocked and the set re-boots, CSM
The Blinking LED Procedure).
Extra Information. Note
).
2009-Apr-03
Page 26
EN 26Q548.1E LA5.
Service Modes, Error Codes, and Fault Finding
5.5.2 How to Read the Error Buffer
Use one of the following methods:
•On screen via the SAM (only when a picture is visible).
E.g.:
– 00 00 00 00 00: No errors detected
– 23 00 00 00 00: Error code 23 is the last and only
detected error.
– 37 23 00 00 00: Error code 23 was first detected and
error code 37 is the last detected error.
– Note that no protection errors can be logged in the
error buffer.
•Via the blinking LED procedure. See section 5.5.3
Clear the Error Buffer.
•Via ComPair.
5.5.3 How to Clear the Error Buffer
Use one of the following methods:
•By activation of the “RESET ERROR BUFFER” command
in the SAM menu.
•With a normal RC, key in sequence “MUTE” followed by
“062599” and “OK”.
•If the content of the error buffer has not changed for 50+
hours, it resets automatically.
5.5.4 Error Buffer
In case of non-intermittent faults, clear the error buffer before
starting to repair (before clearing the buffer, write down the
How to
content, as this history can give significant information). This to
ensure 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
code and not the actual cause (e.g. a fault in the protection
detection circuitry can also lead to a protection).
There are several mechanisms of error detection:
•Via error bits in the status registers of ICs.
•Via polling on I/O pins going to the stand-by processor.
•Via sensing of analogue values on the stand-by processor
or the PNX8543.
•Via a “not acknowledge” of an I
2
C communication.
Take notice that some errors need several minutes before they
start blinking or before they will be logged. So in case of
problems wait 2 minutes from start-up onwards, and then
check if the front LED is blinking or if an error is logged.
Multi Standard demodulator (Micronas IF) 2 27 MIPSI
ARM (AL)8 28 MIPS
FPGA (Local contrast)2 29 MIPS
Tuner12 34 MIPSI
2
FAN I
C expander7 41 MIPSI2C2E EBPCA 9533FAN mod.
T× sensor7 42 MIPSI
FAN 17 43 MIPS
FAN 27 44 MIPS
MIPS does not boot (SW cause)2 53 St-by µP I
Display5 64 MIPS
FPGA LED dim 2D2 65 MIPS
FPGA LED dim 3D8 65 MIPSI
I2C3E EBSTM24C08SSB
2
C3E EBDRX3616K
DRX3626K
SSB
I2C3E EBNXP LPC2103 AL mod. or DC/DC
I2C3E EBAlteraSSB
2
C3E EBUV1783S
2
C2E EBLM 75T×sensor
HD1816
SSB
I2C2EEBFAN
I2C2EEBFAN
2
C1P BLPNX8543SSBTV is rebooting endlessly with white LED blinking.
I2C2E BL/EBAlteraDisplay
I2C3E EBXilinxSSB
2
C2E EBAlteraSSB
Special Remarks
TV is rebooting endlessly with red LED blinking “2”.
TV is rebooting endlessly with red LED blinking “2”
TV shut down with red LED blinking “3”.
TV still in normal operation mode, but without backlights.
Enter CSM Layer 1 red LED blinking “3”.
TV shut down with red LED blinking “2”.
TV is rebooting endlessly, with red LED blinking “2” (shown
every 20 second).
Activate CSM red LED blinking “2”.
TV is rebooting endlessly, with red LED blinking “2” (shown
every minute).
TV is in normal operation but without video displayed (RF).
TV is in normal operation but without AMBILIGHT “on”.
TV is in normal operation but without video displayed (RF).
2009-Apr-03
Page 27
Service Modes, Error Codes, and Fault Finding
EN 27Q548.1E LA5.
Extra Information
•Rebooting. When a TV is constantly rebooting due to
internal problems, most of the time no errors will be logged
or blinked. This rebooting can be recognized via a ComPair
interface and Hyperterminal (for Hyperterminal settings,
see section 5.8.6
UART Logging). It’s shown that the
loggings which are generated by the main software keep
continuing. In this case diagnose has to be done via
ComPair.
•Main NVM. When there is no I
2
C communication towards
the main NVM, LAYER 1 error = “2” will be displayed via
the blinking LED procedure. In SDM, LAYER 2 error can be
“19”. Check the logging for keywords like “I
•Error 13 (I
2
C bus 3 blocked). When this error occurs, the
2
C bus blocked”.
TV will constantly reboot due to the blocked bus. The best
way for further diagnosis here, is to use ComPair.
•Error 15 (PNX8543 doesn’t boot). Indicates that the main
processor was not able to read his bootscript. This error will
point to a hardware problem around the PNX8543
(supplies not OK, PNX 8541 completely dead, I
between PNX and Stand-by Processor broken, etc...).
When error 15 occurs it is also possible that I
blocked (NVM). I
2
C2 can be indicated in the schematics as
2
C link
2
C2 bus is
follows: SCL-UP-MIPS, SDA-UP-MIPS, SCL-2 or SDA-2.
Other root causes for this error can be due to hardware
problems with: NVM PNX5120, PNX5120 itself, or DDRs.
•Error 16 (12V). This voltage is made in the power supply
and results in protection (LAYER 1 error = “3”). When SDM
is activated we see blinking LED LAYER 2 error = “16”.
•Error 17 (POK). The display is switched “on” with the
signal “Lamp On”. If the inverter starts (or 24V display is
OK) the POK line becomes “high”. If the POK line is not
“high”, the set backlight will be switched “off” and “on” again
for 3 times (start-up). If the set POK line becomes “high”
after the retries, no error is logged; if the POK stays “low”,
error is logged: LAYER 1 error = “3”, LAYER 2 error = “17”.
No protection is required, the start-up goes on.
•Error 18 (1V2-3V3-5V too low). All these supplies are
generated by the DC/DC supply on the SSB. If one of these
supplies is too low, protection occurs and blinking LED
LAYER 1 error = “2” will be displayed automatically. In
SDM this gives LAYER 2 error = “18”.
•Error 21 (PNX5120). When there is no I
2
C communication
towards the PNX5120 after start-up (power “off” by
disconnection of the mains cord), LAYER 2 error will blink
continuously via the blinking LED procedure in SDM. (startup the TV with the solder paths short to activate SDM).
•Error 23 (HDMI). When there is no I
2
C communication
towards the HDMI multiplexer after start up, LAYER 2
error = “23” will be logged and displayed via the blinking
LED procedure if SDM is switched “on”.
•Error 25 (Boot-NVM PNX5120). When there is no I
2
C
communication towards the PNX5120 NVM after start-up,
TV is rebooting endlessly with blinking LAYER 1 error = 2
(shown every minute). When SDM is activated we see
blinking LED LAYER 2 error = “25”.
•Error 27 (Multi Standard demodulator). When there is no
2
C communication towards the Multi Standard
I
demodulator after start up, LAYER 2 error = “27” will be
logged and displayed via the blinking LED procedure when
SDM is switched “on”.
•Error 28 (FPGA ambilight). When there is no I
2
C
communication towards the FPGA ambilight after start up,
LAYER 2 error = “28” will be logged and displayed via the
blinking LED procedure if SDM is switched “on”. Note that
it can take up several minutes before the TV starts blinking
LAYER 1 error = “2” in CSM or in SDM, LAYER 2
error = “28”.
•Error 34 (Tuner). When there is no I
2
C communication
towards the tuner after start up, LAYER 2 error = “34” will
be logged and displayed via the blinking LED procedure
when SDM is switched on.
•Error 53. This error will indicate that the PNX8543 has
read his bootscript (when this would have failed, error 15
would blink) but initialization was never completed because
of hardware problems (NAND flash,...) or software
initialization problems. Possible cause could be that there
is no valid software loaded (try to upgrade to the latest main
software version). Note that it can take up to 2 minutes
before the TV starts blinking LAYER 1 error = “2” or in
SDM, LAYER 2 error = “53”.
5.6The Blinking LED Procedure
5.6.1Introduction
The blinking LED procedure can be split up into two situations:
•Blinking LED procedure LAYER 1 error. In this case the
error is automatically blinked when the TV is put in CSM.
This will be only one digit error, namely the one that is
referring to the defective board (see table 5-3
overview (multi chassis overview)) which causes the failure
of the TV. This approach will especially be used for home
repair and call centres. The aim here is to have service
diagnosis from a distance.
•Blinking LED procedure LAYER 2 error. Via this procedure,
the contents of the error buffer can be made visible via the
front LED. In this case the error contains 2 digits (see table
Error code overview (multi chassis overview)) and will
5-3
be displayed when SDM (hardware pins) is activated. This
is especially useful for fault finding and gives more details
regarding the failure of the defective board.
Important remark:
For all errors detected by MIPS which are fatal (rebooting
of the TV set, with reboot starts after LAYER 1 error
blinking), one should short the SDM solder paths at startup from the power OFF state by mains interruption and not
via the power button, to trigger the SDM via the hardware
pins.
When one of the blinking LED procedures is activated, the front
LED will show (blink) the contents of the error-buffer. Error
codes greater then 10 are shown as follows:
1. “n” long blinks (where “n” = 1 to 9) indicating decimal digit
2. A pause of 1.5 s
3. “n” short blinks (where “n”= 1 to 9)
4. A pause of approximately 3 s,
5. When all the error codes are displayed, the sequence
finishes with a LED blink of 3 s
6. The sequence starts again.
Example: Error 12 8 6 0 0.
After activation of the SDM, the front LED will show:
1. One long blink of 750 ms (which is an indication of the
decimal digit) followed by a pause of 1.5 s
2. Two short blinks of 250 ms followed by a pause of 3 s
3. Eight short blinks followed by a pause of 3 s
4. Six short blinks followed by a pause of 3 s
5. One long blink of 3 s to finish the sequence
6. The sequence starts again.
5.6.2How to Activate
Use one of the following methods:
•Activate the CSM. The blinking front LED will show only
the latest layer 1 error, this works in “normal operation”
mode or automatically when the error/protection is
monitored by the stand-by processor. At the time of this
release, this layer 1 error blinking was not working as
expected.
In case no picture is shown and there is no LED blinking,
read the logging to detect whether “error devices” are
mentioned. (see section 5.8.6
•Activate the SDM. The blinking front LED will show the
entire contents of the layer 2 error buffer, this works in
“normal operation” mode or when SDM (via hardware pins)
is activated when the tv set is in protection.
UART Logging).
Error code
2009-Apr-03
Page 28
EN 28Q548.1E LA5.
Service Modes, Error Codes, and Fault Finding
Important remark:
For all errors detected by MIPS which are fatal =>
rebooting of the TV set (reboot starts after LAYER 1 error
blinking), one should short the solder paths at start-up from
the power OFF state by mains interruption and not via the
power button to trigger the SDM via the hardware pins.
•Transmit the commands “MUTE” - “062500” - “OK” with a normal RC. The complete error buffer is shown.
Take notice that it takes some seconds before the blinking
LED starts.
•Transmit the commands “MUTE” - “06250x” - “OK” with a normal RC (where “x” is a number between 1
and 5). When x = 1 the last detected error is shown, x = 2
the second last error, etc.... Take notice that it takes some
seconds before the blinking LED starts.
5.7Protections
5.7.1 Software Protections
Most of the protections and errors use either the stand-by
microprocessor or the MIPS controller as detection device.
Since in these cases, checking of observers, polling of ADCs,
and filtering of input values are all heavily software based,
these protections are referred to as software protections.
There are several types of software related protections, solving
a variety of fault conditions:
•Protections related to supplies: check of the 12V, +5V,
+3V3 and 1V2.
•Protections related to breakdown of the safety check mechanism. E.g. since the protection detections are done
by means of software, failing of the software will have to
initiate a protection mode since safety cannot be
guaranteed any more.
Remark on the Supply Errors
The detection of a supply dip or supply loss during the normal
playing of the set does not lead to a protection, but to a cold
reboot of the set. If the supply is still missing after the reboot,
the TV will go to protection.
Protections during Start-up
During TV start-up, some voltages and IC observers are
actively monitored to be able to optimise the start-up speed,
and to assure good operation of all components. If these
monitors do not respond in a defined way, this indicates a
malfunction of the system and leads to a protection. As the
observers are only used during start-up, they are described in
the start-up flow in detail (see section 5.3
up).
5.7.2 Hardware Protections
The only real hardware protection in this chassis appears in
case of an audio problem e.g. DC voltage on the speakers. The
audio protection circuit pulls the “supply-fault” low and the tv set
will blink LAYER 1 error = 2 or in SDM, LAYER 2 error = 19.
Be very careful to overrule this protection via SDM (not to
cause damage to the Class D audio amplifier). Check audio
part first before activating via SDM. In case one of the
speakers is not connected, the protection can also be
triggered.
Repair Tips
•It is also possible that the set has an audio DC protection
because of an interruption in one or both speakers (the DC
voltage that is still on the circuit cannot disappear through
the speakers).
Caution: (Dis)connecting the speakers during the ON
state of the TV can damage the audio amplifier.
Step by step Start-
5.7.3Important remark regarding the blinking LED indication
As for the blinking LED indication, the blinking LED of layer 1
error displaying can be switched “off” by pushing the power
button on the keyboard.
This condition is not valid after the set was unpowered (via
mains interruption). The blinking LED starts again and can only
be switched “off” by unplugging the mains connection.
This can be explained by the fact that the MIPS can not load
the keyboard functionality from software during the start-up and
does not recognise the keyboard commands at this time.
5.8Fault Finding and Repair Tips
Read also section “5.5 Error Codes, 5.5.4 Error Buffer, Extra
Information”.
5.8.1Ambilight
Due to degeneration process of the AmbiLights, there can be a
difference in the colour and/or light output of the spare
ambilight module in comparison with the originals ones
contained in the TV set. Via ComPair, the light output can be
adjusted.
5.8.2 CSM
When CSM is activated and there is a USB stick connected to
the TV, the software will dump the complete CSM content to the
USB stick. The file (Csm.txt) will be saved in the root of the USB
stick. If this mechanism works it can be concluded that a large
part of the operating system is already working (MIPS, USB...)
5.8.3Exit “Factory Mode”
When an “F” is displayed in the screen’s right corner, this
means the set is in “Factory” mode, and it normally
happens after a new SSB is mounted. To exit this mode, push
the “VOLUME minus” button on the TV’s local keyboard for 10
seconds (this disables the continuous mode).
Then push the “SOURCE” button on the TV’s local keyboard
for 10 seconds until the “F” disappears from the screen.
5.8.4DC/DC Converter
Introduction
•The best way to find a failure in the DC-DC converters is to
check their starting-up sequence at “power-on via the
mains cord”, presuming that the stand-by microprocessor
is operational.
•If the input voltage of DC-DC converters is around 12.7 V
(measured on decoupling capacitors 2107 and 2123 and
the enable signals are “low” (active), then the output
voltages should have their normal values. The +12V and
+5VPOD supplies start-up first (enabled by PODMODE
signal from the stand-by microprocessor). There is a
supplementary condition for 12V to start-up: if the +5VPOD does not start up due to a local defect, then +12V will
not be available as well. The +5V-ON supply is enabled by
the ONMODE signal (coming also from the stand-by
microprocessor). The +1V2 supply starts up when the
+12V appears, then at least 100 ms later, the +3V3 will be
activated via the ENABLE-3V3 signal from the stand-by
microprocessor. If the +12V value is less than 10 V, the last
enumerated voltages will not show up due to the undervoltage detection circuit 7105-1 + 6101 and surrounding
components. Furthermore, if the +12V is less than 8 V,
then also the +1V2 will not be available. The +5V5-TUN
generator 7202 (present only for the analogue version of
China platforms) will start to operate as soon as the 12V
(PSU) is present.
2009-Apr-03
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Service Modes, Error Codes, and Fault Finding
EN 29Q548.1E LA5.
•The consumption of controller IC 7103 is around 19 mA
(that means almost 200 mV drop voltage across resistor
3108).
•The current capability of DC-DC converters is quite high
(short-circuit current is 7 to 10 A).
•The DETECT1 signal (active “low”) is an internal protection
(error 18) of the DC-DC convertor and will occur if the
output voltage of any DC-DC convertor is out of limits (10%
of the normal value).
Fault Finding
•Symptom: +1V2 not present (even for a short while ~10
ms)
– Check 12 V availability (resistor 3108, MOS-FETs
7101 and 7102), value of +12 V, and surrounding
components)
– Check the voltage on pin 9 (1.5 V),
– Check for +1V2 output voltage short-circuit to GND that
can generate pulsed over-currents 7...10 A through coil
5103.
– Check the over-current detection circuit (2106 or 3131
interrupted).
•Symptom: +1V2 present for about 100ms, +3V3 not rising.
– Check the ENABLE-3V3 signal (active “low”),
– Check the voltage on pin 8 (1.5 V),
– Check the under-voltage detection circuit (the voltage
on collector of transistor 7105-1 should be less than
0.8 V),
– Check for output voltages short-circuits to GND (+3V3)
that can generate pulsed over currents 7...10 A
through coil 5101,
– Check the over-current detection circuit (2105 or 3127
interrupted).
•Symptom: +1V2 OK, +3V3 present for about 100 ms.
Possible cause: SUPPLY-FAULT line stays “low” even
though the +3V3 and +1V2 is available - the stand-by
microprocessor is detecting that and switching “off” all
supply voltages.
– Check the drop voltage across resistor 3108 (they
could be too high, meaning a defective controller IC or
MOS-FETs),
– Check if the boost voltage on pin 4 of controller IC 7103
is less than 14 V (should be 19 V),
– Check if +1V2 or +3V3 are higher than their normal
values - that can be due to defective DC feedback of
the respective DC-DC convertor (ex. 3152, 3144).
•Symptom: +1V2 and +3V3 show a high level of ripple
voltage (audible noise can come from the filtering coils
5101, 5103). Possible cause: instability of the frequency
and/or duty cycle of a DC-DC converter or stabiliser.
– Check the resistor 3164, capacitors 2102 and 2103,
input and output decoupling capacitors.
– Check AC feedback circuits (2120, 2129, 3141, 3153,
2110, 2114 and 3135).
•Symptom: +1V2, +3V3 ok, no +5V5-TUN (analogue sets
only). Possible cause: the “+5V5-TUN GENERATOR”
circuit (7202 and surroundings components) is defective:
check transistor 7202 (it has to have gate voltage pulses of
about 10 V amplitude and drain voltage pulses of about 35
V amplitude) and surrounding components. A high
consumption (more than 6 mA) from +5V5-TUN voltage
can cause also +5V5-TUN voltage to be too low or zero.
Note: when a pair of power MOSFETs (7101 or 7102)
becomes defective, the controller IC 7103 should be replaced
as well.
5.8.5Fan self test (only for sets with LED backlight)
In case fans are present, a softest can be done by pushing the
red coloured button on the remote control while the TV set is in
CSM. Exit CSM and check the status of the fans in the error
buffer by entering SAM (062596 + info button on the RC). In
case of failure (fully red screen) more detailed information is
available in the error buffer (error 41, 42, 43, 44).
5.8.6UART Logging
When something is wrong with the TV set (f.i.the set is
rebooting) checking the UART logging using hyperterminal can
be done to find more information. Hyperterminal is a standard
Windows application. It can be found via Programs,
Accessories, Communications, Hyperterminal. Connect a
“ComPair UART”-cable (3138 188 75051) from the Service
connector in the TV set, via the ComPair interface (this is compulsory, otherwise ICs are blown in the PC), to the
“COMx”-port of the PC. After start-up of Hyperterminal, fill in a
name (f.i. “logging”) in the “Connection Description” box, then
apply the following settings:
1. COMx
2. Bits per second = 115200
3. Data bits = 8
4. Parity = none
5. Stop bits = 1
6. Flow control = none
During the start-up of the TV set, the logging will be displayed.
This is also the case during rebooting of the TV set (the same
logging appears time after time). Also available in the logging
is the “Display Option Code” (useful when there is no picture),
look for item “DisplayRawNumber” in the beginning of the
logging.
Tip: When there is no picture available during reboot, it is
possible to check for “error devices” in the logging (LAYER 2
error). This can be very helpful to determine the failure cause
of the reboot. For protection state, there is no logging.
5.8.7Loudspeakers
Make sure that the volume is set to minimum during
disconnecting the speakers in the “on” state of the TV. The
audio amplifier can be damaged by disconnecting the speakers
during “on” state of the set! Sometimes the set can go into
protection, but that is not always the case.
5.8.8Tuner
Attention: In case the tuner is replaced, always check the tuner
options!
5.8.9Display option code
Attention: In case the SSB is replaced, always check the
display option code in SAM, even when picture is available.
Performance with the incorrect display option code can lead to
unwanted side-effects for certain conditions.
See also Table 6-4
5.8.10 Upgrade HDMI EDID NVM
To upgrade the HDMI EDID, see ComPair for further
instructions.
for the code.
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EN 30Q548.1E LA5.
1
SDM2EDID
18440_201_090225.eps
090306
5.8.11 Upgrade VGA EDID NVM
To upgrade the VGA EDID NVM, pin 7 of the EDID NVM [2] has
to be short circuited to ground. See ComPair for further
instructions.
Figure 5-10 VGA EDID NVM
Service Modes, Error Codes, and Fault Finding
2009-Apr-03
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Service Modes, Error Codes, and Fault Finding
START
Create “repair” directory on USB stick and
connect USB stick to TV-set
Go to SAM mode (062596 i+) and
save the TV settings via “Upload to USB”.
Set is still
operating?
- Replace SSB board by a Service SSB.
- Make the SSB fit mechanically to the set.
Go to SAM mode, and reload settings
via “Download from USB”.
Saved settings
on USB stick?
Program “Display Option” code via 062598
MENU/HOME, followed by 3 digits code (this
code can be found on a sticker inside the set).
Check and perform alignments in SAM
according to the Service Manual.
E.g. option codes, colour temperature...
Connect PC via ComPair interface to Service
connector.
END
Yes
After entering “Display Option” code, set is
going to Standby (= validation of code).
Restart the set.
In case of settings reloaded from USB, the set type,
serial number, Display 12NC, are automatically stored
when entering display options.
No
- Check if correct “Display Option” code is
programmed.
- Verify “Option Codes” according sticker inside the set.
- Default settings for White drive ...see Service Manual
No
Set is starting up & display is OK.
If not already done;
Check latest software on Service website.
Update Main and Standby software via USB.
Q52xE SSB Board swap – v5.1
VDS/JA Updated 18-03-2009
(changes are indicated in red)
Final check of all menus in CSM.
Special attention for HDMI Keys.
Program “set type number”, “serial number”,
and “display 12NC”.
Update main software in this step, by using
“autorun.upg” file.
Start TV in Jett mode (DVD i+/OSD)
Open ComPair browser Q52x.
Noisy picture with bands/lines is visible and the
red LED is continuous “on”
(sometimes also the letter “F” is visible).
Press 5 s. the “Volume minus” button on the local
cntrl until the red LED switches “off”, and then
press 5 s. the MENU (*) button of the local cntrl.
(* in some chassis this button is named SOURCE)
The picture noise is replaced by blue mute!
Unplug the mainscord to verify the correct
disabling of the factory-mode.
Program “Display Option” code via 062598 MENU/
HOME, followed by 3 digits code (this code can be
found on a sticker inside the set).
After entering “Display Option” code, set is going
to Standby (= validation of code).
Restart the set.
Set is starting up in “Factory” mode.
Start-up set.
Set behaviour?
Set is going into protection after
replacing the SSB
(blinking LED, error 2).
Take care that speakers are connected!
In some sets, the speakers are in the rear
cover, and when the set is switched “on”
without speakers, it is possible that the Audio
protection is triggered.
Advise: remount rear cover before switching
“on” (see also SCC_71772).
Q54x.x
H_16771_007.eps
090318
5.8.12 SSB Replacement
Follow the instructions in the flowchart in case a SSB has to be
exchanged. See Figure 5-11
.
EN 31Q548.1E LA5.
Figure 5-11 SSB replacement flowchart
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Service Modes, Error Codes, and Fault Finding
5.9Software Upgrading
5.9.1Introduction
The set software and security keys are stored in a NANDFlash, which is connected to the PNX8543 via the PCI bus.
It is possible for the user to upgrade the main software via the
USB port. This allows replacement of a software image in a
stand alone set, without the need of an E-JTAG debugger. A
description on how to upgrade the main software can be found
in the DFU.
Important: When the NAND-Flash must be replaced, a new
SSB must be ordered, due to the presence of the security keys!
(copy protection keys, MAC address, ...). It is not possible
anymore to replace the NAND-Flash with another one from a
scrap-board.
Perform the following actions after SSB replacement:
1. Set the correct option codes (see sticker inside the TV).
2. Update the TV software (see the DFU for instructions).
3. Perform the alignments as described in section Reset of
Repaired SSB.
4. Check in CSM if the HDMI keys are valid.
For the correct order number of a new SSB, always refer to the
Spare Parts list, available on the Philips Spare Part web portal.
5.9.2 Main Software Upgrade
•The “UpgradeAll.upg” file is only used in the factory.
•The “FlashUtils.upg” file is only used by Service centres
that are allowed to do component level repair on the SSB.
Automatic Software Upgrade
In “normal” conditions, so when there is no major problem with
the TV, the main software and the default software upgrade
application can be upgraded with the “AUTORUN.UPG”
(FUS part of the one-zip file: e.g. FUS _Q5431E_
1.25.5.0_commercial.zip). This can also be done by the
consumers themselves, but they will have to get their software
from the commercial Philips website or via the Software Update
Assistant in the user menu (see DFU). The “autorun.upg” file
must be placed in the root of the USB stick.
How to upgrade:
1. Copy “AUTORUN.UPG” to the root of the USB stick.
2. Insert USB stick in the set while the set is in ON MODE.
The set will restart and the upgrading will start
automatically. As soon as the programming is finished, a
message is shown to remove the USB stick and restart the
set.
Manual Software Upgrade
In case that the software upgrade application does not start
automatically, it can also be started manually.
How to start the software upgrade application manually:
1. Disconnect the TV from the Mains/AC Power.
2. Press the “OK” button on a Philips TV remote control or a
Philips DVD RC-6 remote control (it is also possible to use
a TV remote in “DVD” mode). Keep the “OK” button
pressed while reconnecting the TV to the Mains/AC Power.
3. The software upgrade application will start.
Attention!
In case the download application has been started manually,
the “autorun.upg” will maybe not be recognized.
What to do in this case:
1. Create a directory “UPGRADES” on the USB stick.
2. Rename the “autorun.upg” to something else, e.g. to
“software.upg”. Do not use long or complicated names,
keep it simple. Make sure that “AUTORUN.UPG” is no
longer present in the root of the USB stick.
3. Copy the renamed “upg” file into this directory.
4. Insert USB stick into the TV.
5. The renamed “upg” file will be visible and selectable in the
upgrade application.
Back-up Software Upgrade Application
If the default software upgrade application does not start (could
be due to a corrupted boot 2 sector) via the above described
method, try activating the “back-up software upgrade
application”.
How to start the “back-up software upgrade application”
manually:
1. Disconnect the TV from the Mains/AC Power.
2. Press the “INFO”-button on a Philips remote control or
“CURSOR DOWN” button on a Philips DVD RC-6 remote
control (it is also possible to use a TV remote in “DVD”
mode). Keep the “INFO”-button (or “cursor down” button)
pressed while reconnecting the TV to the Mains/AC Power.
3. The software upgrade application will start.
5.9.3Stand-by Software Upgrade via USB
In this chassis it is possible to upgrade the Stand-by software
via a USB stick. The method is similar to upgrading the main
software via USB.
Use the following steps:
1. Create a directory “UPGRADES” on the USB stick.
2. Copy the Stand-by software (part of the one-zip file, e.g.
StandbySW_CFT69_84.0.0.0.upg) into this directory.
3. Insert the USB stick into the TV.
4. Start the download application manually (see
Manual Software Upgrade.
section
5. Select the appropriate file and press the “red” button to
upgrade.
5.9.4Content and Usage of the One-Zip Software File
Below the content of the One-Zip file is explained, and
instructions on how and when to use it.
File nameDescription
907.5_PnSEsticker.zipContains the E-sticker data. Not to be
cabinet_TV543_x.x.x.x.zipContains acoustic parameters per
ceisp2padll_P2PAD_x.x.x.x.zipNot to be used by Service technicians.
display_TV543_x.x.x.x.zipNot to be used by Service technicians.
EJTAGDownload_Q5431_x.x.x.x.zip Only used by service centra which are
Factory_Q5431_x.x.x.x.zipOnly for production purposes, not to be
FlashUtils_Q5431_x.x.x.x.zipNot to be used by Service technicians.
FUS_Q5431_x.x.x.x.zipContains the “autorun.upg” which is
HDMI_FHD_EDID_Q5431_x.x.x.x.zip Contains the EDID content of the different
HDMI_HD_EDID_Q5431_x.x.x.x.zipContains the EDID content of the different
lightGuide_TV543_x.x.x.x.zipNot to be used by Service technicians.
OAD_Q5431_x.x.x.x.zipNot to be used by Service technicians.
Pgamma_xxxxxxxx_Q5431_x.x.x.x.zip Contains NVM data for the specific
PQ_Q5431_x.x.x.x.zipNot to be used by Service technicians.
processNVM_Q5431_x.x.x.x.zipDefault NVM content. Must be
used by Service technicians.
cabinet. Not to be used by Service
technicians.
For ComPair development only.
allowed to do Component Level Repair.
used by Service technicians.
needed to upgrade the TV main software
and the software download application.
(FHD) HDMI NVM’s. See ComPair for
further instructions.
(HD) HDMI NVM’s. See ComPair for
further instructions.
display control board. Not to be used by
Service technicians.
programmed via ComPair.
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Service Modes, Error Codes, and Fault Finding
File nameDescription
StandbySW_CFT69_x.x.x.x.zipContains the Stand-by software in “upg”
Tcon_xxxxxxxx_Q5431_x.x.x.x.zipContains NVM data for the specific
UpgradeAll_Q5431_x.x.x.x.zip
UpgradeExe_Q5431_x.x.x.x.zipOnly for production purposes, not to be
VGA_FHD_EDID_TV543_x.x.x.x.zip Contains the EDID content of the different
VGA_HD_EDID_TV543_x.x.x.x.zipContains the EDID content of the different
and “hex” format.
- The “StandbySW_xxxxx_prod.upg” file
can be used to upgrade the S tand-by
software via USB.
- The “StandbySW_xxxxx.hex” file can be
used to upgrade the Stand-by software
via ComPair.
- The files
“StandbySW_xxxxx_exhex.hex” and
“StandbySW_xxxxx_dev.upg” may not be
used by Service technicians (only for
development purposes).
display control board. Not to be used by
Service technicians.
Only for production purposes, not to be
used by Service technicians. Caution:
Never try to use this file, because it will
overwrite the HDCP keys!
used by Service technicians.
(FHD) VGA NVM. See ComPair for
further instructions.
(HD) VGA NVM. See ComPair for further
instructions.
EN 33Q548.1E LA5.
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EN 34Q548.1E LA6.
6.Alignments
Alignments
Index of this chapter:
General Alignment Conditions
6.1
6.2 Hardware Alignments
6.3 Software Alignments
6.4 Option Settings
6.5 Reset of Repaired SSB
6.6 Total Overview SAM modes
6.1General Alignment Conditions
Perform all electrical adjustments under the following
conditions:
•Power supply voltage (depends on region):
– AP-NTSC: 120 VAC or 230 V
– AP-PAL-multi: 120 - 230 V
– EU: 230 V
/ 50 Hz (± 10%).
AC
– LATAM-NTSC: 120 - 230 V
– US: 120 V
/ 60 Hz (± 10%).
AC
/ 50 Hz (± 10%).
AC
/ 50 Hz (± 10%).
AC
/ 50 Hz (± 10%).
AC
•Connect the set to the mains via an isolation transformer
with low internal resistance.
•Allow the set to warm up for approximately 15 minutes.
•Measure voltages and waveforms in relation to correct
ground (e.g. measure audio signals in relation to
AUDIO_GND).
Caution: It is not allowed to use heat sinks as ground.
•Test probe: R
> 10 MΩ, Ci < 20 pF.
i
•Use an isolated trimmer/screwdriver to perform
alignments.
6.1.1Alignment Sequence
•First, set the correct options:
– In SAM, select “Options”, and then “Option numbers”.
– Fill in the option settings for “Group 1” and “Group 2”
according to the set sticker (see also section Option
Settings).
– Press OK on the remote control before the cursor is
moved to the left.
– In submenu “Option numbers” select “Store” and press
OK on the RC.
•OR:
– In main menu, select “Store” again and press OK on
the RC.
– Switch the set to Stand-by.
•Warming up (>15 minutes).
6.2Hardware Alignments
Not applicable.
6.3Software Alignments
Put the set in SAM mode (see chapter 5. Service Modes, Error
Codes, and Fault Finding). The SAM menu will now appear on
the screen. Select ALIGNMENTS and go to one of the sub
menus. The alignments are explained below.
The following items can be aligned:
•Tuner AGC.
•White point.
To store the data:
•Press OK on the RC before the cursor is moved to the left.
•In main menu select “Store” and press OK on the RC.
•Press MENU on the RC to switch back to the main menu.
•Switch the set to stand-by mode.
For the next alignments, supply the following test signals via a
video generator to the RF input:
•EU/AP-PAL models: a PAL B/G TV-signal with a signal
strength of at least 1 mV and a frequency of 475.25 MHz
•US/AP-NTSC models: an NTSC M/N TV-signal with a
signal strength of at least 1 mV and a frequency of 61.25
MHz (channel 3).
•LATAM models: an NTSC M TV-signal with a signal
strength of at least 1 mV and a frequency of 61.25 MHz
(channel 3).
6.3.1Tuner AGC (RF AGC Take Over Point Adjustment)
Purpose: To keep the tuner output signal constant as the input
signal amplitude varies.
No alignment is necessary, as the AGC alignment is done
automatically (standard value: “64”).
Store settings and exit SAM.
6.3.2White Point
•Set “Active control” to “Off”.
•Choose “TV menu”, “TV Settings” and then “Picture” and
set picture settings as follows:
Picture Setting
Dynamic backlight Off
Dynamic ContrastOff
Colour EnhancementOff
Picture Format Un scaled
Light SensorOff
Brightness50
Colour0
Contrast100
•Go to the SAM and select “Alignments”-> “White point”.
White point alignment LCD screens:
•Use a 100% white screen as input signal and set the
following values:
– “Colour temperature”: “Normal”.
– All “White point” values to: “127”.
– “Red BL offset” values to “7”.
– “Green BL offset” values to “7”.
In case you have a colour analyser:
•Measure with a calibrated contactless colour analyser in
the centre of the screen. Consequently, the measurement
needs to be done in a dark environment.
•Adjust the correct x, y coordinates (while holding one of the
White point registers R, G or B on 127) by means of
decreasing the value of one or two other white points to the
correct x, y coordinates (see Table 6-1
). Tolerance: dx: ±
0.004, dy: ± 0.004.
•Repeat this step for the other colour temperatures that
need to be aligned.
•When finished press OK on the RC and then press STORE
(in the SAM root menu) to store the aligned values to the
NVM.
•Restore the initial picture settings after the alignments.
Table 6-1 White D alignment values
ValueCool (11000K)Normal (9000K)Warm (6500K)
x0.2780.2890.314
y0.2780.2910.319
If you do not have a colour analyser, you can use the default
values. This is the next best solution. The default values are
average values coming from production.
•Select a COLOUR TEMPERATURE (e.g. COOL,
NORMAL, or WARM).
2009-Apr-03
Page 35
Alignments
EN 35Q548.1E LA6.
•Set the RED, GREEN and BLUE default values according
to the values in Table 6-1
.
•When finished press OK on the RC, then press STORE (in
the SAM root menu) to store the aligned values to the NVM.
•Restore the initial picture settings after the alignments.
Table 6-2 White tone default settings Frame sets
(7000 series)
White Tone32"42"Black level
Colour TempRGBRGBR G
Normal1279310012711611288
Cool1279812212511412488
Warm12783 6112710873 8 8
Table 6-3 White tone default settings Roadrunner sets
(8000 series)
White Tone32"42"Black level
Colour TempRGBRGBR G
Normal12793 9712710399 8 8
Cool12710012012710911888
Warm12783 5912794 61 8 8
Note: tint settings Frame sets (7000 series) 47" and 52", as
well as Roadrunner sets (8000 series) 37" and 47", were not
available at time of publishing.
6.3.3 LCD Panel Flicker Alignment
offset
offset
6.4.4Opt. No. (Option numbers)
Select this sub menu to set all options at once (expressed in
two long strings of numbers).
An option number (or “option byte”) represents a number of
different options. When you change these numbers directly,
you can set all options very quickly. All options are controlled
via eight option numbers.
When the NVM is replaced, all options will require resetting. To
be certain that the factory settings are reproduced exactly, you
must set both option number lines. You can find the correct
option numbers on a sticker inside the TV set and in Table 6-4Example: The options sticker gives the following option
numbers:
•08192 00133 01387 45160
•12232 04256 00164 00000
The first line (group 1) indicates hardware options 1 to 4, the
second line (group 2) indicate software options 5 to 8.
Every 5-digit number represents 16 bits (so the maximum value
will be 65536 if all options are set).
When all the correct options are set, the sum of the decimal
values of each Option Byte (OB) will give the option number.
SeeTable 6-4
for the options.
Diversity
Not all sets with the same Commercial Type Number (CTN)
necessarily have the same option code!
Use of Alternative BOM An alternative BOM number usually
indicates the use of an alternative display or power supply. This
results in another display code thus in another Option code. For
the power supply there is no difference.
Refer to Chapter 3.
Precautions, Notes, and Abbreviation List.
.
Note: This is only necessary for Forward Integration models
(sets that have the LCD Timing Controller (TCON) located on
the SSB) - not applicable to sets in this chassis.
See ComPair for further instructions.
6.4Option Settings
6.4.1 Introduction
The microprocessor communicates with a large number of I
ICs in the set. To ensure good communication and to make
digital diagnosis possible, the microprocessor has to know
which ICs to address. The presence / absence of these
PNX5120 ICs (back-end advanced video picture improvement
IC which offers motion estimation and compensation features
(commercially called HDNM) plus integrated Ambilight control)
is made known by the option codes.
Notes:
•After changing the option(s), save them by pressing the OK
button on the RC before the cursor is moved to the left,
select STORE in the SAM root menu and press OK on the
RC.
•The new option setting is only active after the TV is
switched “off” / “stand-by” and “on” again with the mains
switch (the NVM is then read again).
Important: after having edited the option numbers as described above, you must press OK on the remote control
before the cursor is moved to the left!
6.5Reset of Repaired SSB
A very important issue towards a repaired SSB from a service
repair shop implies the reset of the NVM on the SSB.
A repaired SSB in service should get the service Set type
“00PF0000000000” and Production code “00000000000000”.
Also the virgin bit is to be set. To set all this, you can use the
ComPair tool.
In case of a display replacement, reset the “Operation hours” to
“0”, or to the operation hours of the replacement display.
For dealer options, in SAM select “Dealer options”.
See Table 6-5
.
6.4.3 (Service) Options
Select the sub menu's to set the initialisation codes (options) of
the model number via text menus. See Table 6-5
.
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6.5.1SSB identification
Whenever ordering a new SSB, it should ne noted that the
correct ordering number (12nc) of a SSB is located on a sticker
on the SSB. The format is <12nc SSB><serial number>. The
ordering number of a “Service” SSB is the same as the ordering
number of an initial “factory” SSB.
6.6Total Overview SAM modes
Table 6-5 SAM mode overview
Alignments
Figure 6-1 SSB identification
Main MenuSub-menu 1Sub-menu 2Sub-menu 3Description
Hardware InformationA. SW VERSION e.g. “Q5431_0.26.10.0”Display TV & Stand-by SW version and CTN serial
B. Stand-by processor version e.g. “STDBY_84.69.0.0”
C. Production code e.g. “See type plate”
Operation hoursDisplays the accumulated total of operation hours.TV
ErrorDisplayed the most recent error.
Reset error bufferClears all content in the error buffer.
AlignmentTuner AGCRF-AGC Take over point adjustment (AGC default
White pointColour temperatureNormal3 difference modes of colour temperature can be se-
Warn
Cool
White point redLCD White Point Alignment. For values,
White point green
White point blue
Red black level offset
Green black level offset
Dealer optionsPicture muteOff/OnSelect Picture mute On/Off. Picture is muted / not
Auto store modeNoneAutostore mode disabled (not in installation menu)
PDC/VPSAutostore mode via ATS (PDC/VPS) enabled
TXT pageAutostore mode via ACI enabled
PDC/VPS/TXTAutostore mode via ACI or ATS enabled
number.
switched “on/off” & every 0.5 hours is increase one
value is 64)
lected
see Table 6-1
muted in case no input signal is detected at input connectors.
Select Virgin mode On/Off. TV starts up / does not
start up (once) with a language selection menu after
the mains switch is turned “on” for the first time (virgin
mode)
.
2009-Apr-03
Page 37
Alignments
Main MenuSub-menu 1Sub-menu 2Sub-menu 3Description
Select Store in the SAM root menu after making any
changes.
can reset the “Display operation ho urs” to “0”. So, this
one does keeps up the lifetime of the display itself
(mainly to compensate the degeneration behaviour).
lation.
stick
the TV.
2009-Apr-03
Page 39
7.Circuit Descriptions
18540_200_090327.eps
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Optional for
Q548 chassis
Circuit Descriptions
EN 39Q548.1E LA7.
Index of this chapter:
Introduction
7.1
7.2 Power Supply
7.3 DC-DC Converter
7.4 Front-End
7.5 HDMI
7.6 Video and Audio Processing - PNX8543
7.7 Common Interface CI+
Notes:
•Only new circuits (circuits that are not published recently)
are described.
•Figures can deviate slightly from the actual situation, due
to different set executions.
•For a good understanding of the following circuit
descriptions, please use the wiring, block (see chapter
9. Block Diagrams) and circuit diagrams (see chapter
10. Circuit Diagrams and PWB Layouts).Where necessary,
you will find a separate drawing for clarification.
7.1Introduction
The Q548.1E LA chassis (platform name TV543/82) is a
derivative from the Q543.1E LA chassis.
Main difference with the previous chassis is the addition of the
PNX5120 Video Back-End Processor.
Roadrunner sets (8000 series) are equipped with AmbiLight.
7.1.1Implementation
Key components of this chassis are:
•PNX8543 Digital Colour Decoder
•HD1816AF Hybrid Tuner
•DRX3926K Demodulator
•TDA9996 HDMI Switch
•TPA3123D2PWP Class D Power Amplifier
•PNX5120 Video Back-End Processor.
7.1.2TV543 Architecture Overview
•For details about the chassis block diagrams refer to
chapter 9. Block Diagrams. An overview of the TV543
architecture can be found in Figure 7-1
.
Figure 7-1 Architecture of TV543/82 platform
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7.1.3SSB Cell Layout
Circuit Descriptions
2009-Apr-03
Figure 7-2 SSB layout cells (top view)
Page 41
7.2Power Supply
Vo=400V
+3V3_STANDBY
+12V
Audio Supply (+12V)
To Lamps
AC Input
Non- Isolated/Hot
Isolated/Cold
PFC
Flyback
STANDBY
(HIIGH=OFF, LOW=ON)
RELAY
Inverter
+24V
18440_208_090226.eps
090327
18440_209_090226.eps
090227
Vin AC
STANDBY
+3V3-STANDBY
+12V, +Vsnd, +24V
Max 1.0secMax 0.5 sec
Min 20 msec
Max 5.0 sec
All power supplies described below are a black box for Service.
When defective, a new board must be ordered and the
defective one must be returned, unless the main fuse of the
board is broken. Always replace a defective fuse with one with
the correct specifications! This part is available in the regular
market.
Consult the Service Spare Parts website for the order codes of
the boards.
7.2.1Specifications
Most sets in the TV543 platform use the Integrated Power
Board (IPB) - incl. inverter. The 52" sets in this chassis have a
conventional PSU - with separate inverter.
Circuit Descriptions
EN 41Q548.1E LA7.
Figure 7-4 PSU Timing Diagram
In this Service Manual, no detailed information is available
because of design protection issues.
7.2.2Diversity
Below find an overview of the different PSUs that are used:
Table 7-1 Supply diversity
SupplierPSUModelInput Voltage Range
LGITPLHL-T826B32PFL7404H/12 High Mains (198 to 265 V
Delta
Delta
DeltaDPS-411AP-3 A 52PFL7404H/12 High Mains (198 to 265 V
LGITPLHL-T826B32PFL8404H/12 High Mains (198 to 265 VAC)
DeltaDPS-298CP A 37PFL8404H/12 High Mains (198 to 265 V
DeltaDPS-298CP-4 A 42PFL8404H/12 High Mains (198 to 265 V
DeltaDPS-298CP-2 A 47PFL8404H/12 High Mains (198 to 265 VAC)
DPS-298CP-4 A 42PFL7404H/12 High Mains (198 to 265 V
DPS-298CP-2 A 47PFL7404H/12 High Mains (198 to 265 V
7.2.3 Application
An application diagram can be found below:
7.2.5Power Supply Protection
Power supply protection is implemented via the stand-by
controller of the PNX8543 via the following signals:
•POWER-OK: signal from PSU to indicate if the supply
output from the IPB is normal
•DETECT1: signal to indicate if the +5V, +3V3 and +1V2
voltages on the chassis are present
•DETECT2: signal to indicate if the +12V voltage on the
chassis is present.
)
AC
)
AC
)
AC
)
AC
7.3DC-DC Converter
Input power is obtained from the IPB module via the following
voltages:
)
AC
)
AC
•+3V3-STANDBY (stand-by-mode only)
•+12V (on-mode)
•+V
(audio power) (on-mode)
snd
•+24V (bolt-on power) (on-mode).
Control is achieved by the PNX8543 controller via the
STANDBY signal.
Audio power is specifically for audio supply usage only and
does not go through any DC conversion.
Below find a block diagram of the on-board DC-DC converters.
Figure 7-3 Application Integrated Power Board
7.2.4 Power Supply Timing
The STANDBY signal controls the on-mode voltages +12V,
and +24V. During chassis cold start from AC mains,
+V
snd
+12V can be expected to be stable within 1.0 seconds, while for
a warm start, i.e. wake up from stand-by power state, this
timing becomes 0.5 seconds maximum. During AC switch off,
stand-by power +3V3-STANDBY decay is at least 20 ms but
not more than 5.0 seconds compared to +12V. Refer to
Figure 7-4
:
+
3V3-STANDBY
NCP5422 + 2x
Si4936
+12V
(Sync Dual
Controller
+ Dual FETs)
ST1S10
(Sync Power IC)
ST1S10
(Sync Power IC)
LD3985M
(Linear Regulator)
Figure 7-5 DC-DC converters
LD1117
(Linear Regulator)
LD1117
(Linear Regulator)
+1V2-PNX8543
+3V3
+1V8-PNX8543
+1V8-PNX5100
ENABLE-3V3
+5V_+5V5-TUN
+1V2-PNX5100
+1V2-STANDBY
18440_210_090227.eps
090227
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EN 42Q548.1E LA7.
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I2C-TUNER
IF-AGC
NXP Hybrid
Tuner
SAW
Filter
IF AmplifierDRX3926KPNX8543
I2C-SSB
CVBS
2nd SIF
TS
TDA9996
1P06
1P04
1P03
1P02
1P0 5
HDMIA-RX
ARX
BRX
CRX
DRX
HDMIB-RX
PNX8543
D
C
A
B
Out
1M96
A B
HDMI 2
HDMI Side
(optional)
HDMI 3
(optional)
HDMI 1
HDMI 4
(optional)
Edid
18440_213_090227.eps
090227
18440_214_090227.eps
090227
TDA9996
CPU
IIC
Platform with embedded EDID
4 * HDMI
inp uts
253 common Bytes
+ 1B subaddres of
Source Physical Address
+3B for input A
+3B for input B
+3B for input C
+3B for input D
E D ID : 253B
3B 3B 3B 3B
7.4Front-End
The Front-End consist of the following key components:
•Tuner HD1816AF
•IF demodulator DRX3926K
•AGC amplifier UPC3221GV
•SAW filter 36M125.
Below find a block diagram of the front-end application.
Circuit Descriptions
Figure 7-8 EDID control (embedded EDID)
Figure 7-6 Front-End block diagram
The DRX3926K is a multi-standard demodulator supporting
DVB-C, DVB-T and analogue standards. The demodulated
digital stream is fed into the parallel transport stream data ports
of the PNX8543. The demodulated analogue signal in the form
of CVBS is connected to the analogue video CVBS/Y input
channel, while the SIF is connected via the SSIF2 positive input
port.
7.5HDMI
In this platform, the TDA9996 HDMI multiplexer is
implemented. The EDID contents are no longer stored in a
separate EEPROM, but directly in the multiplexer. Each input
has its own physical sub address: the first 253 bytes are
common, where the last 3 bytes define the specific input. The
EDID contents are, at +5V power-up, downloaded to RAM. The
following figures show the HDMI input configuration and EDID
control.
Some delta’s w.r.t. TDA9996 compared to earlier chassis/
platforms are:
•+5V detection mechanism
•stable clock detection mechanism
•integrated EDID
•RT control
•HPD control
•TMDS output control
•CEC control
•new hot-plug control for PNX8543 for 5th HDMI input
•new EDID structure: EDID stored in TDA9996, therefore
there are no EDID pins on the SSB. Only in the event of a
5th HDMI input, an additional EEPROM is foreseen, as
was implemented in previous platforms.
Some delta’s with respect to PNX8543 compared to earlier
chassis/platforms are:
•2 HDMI inputs (A & B)
•HDMI deep colour RGB/YCbCr 4:4:1 10/12 bit detection.
After replacement of the TDA9996 HDMI multiplexer, the
2
default I
C address should be reprogrammed from C0 to CE,
and the HDMI EDIDs should be reprogrammed as well. Both
actions should be executed via ComPair.
Figure 7-7 HDMI input configuration
2009-Apr-03
Page 43
Circuit Descriptions
18440_202_090226.eps
TS out/in for
TS in from
CVBS, Y/C,
LV DS for
analog CVBS
analog audio
I
2
S
Dual SPDIF
Low-IF
SSIF, LR
Dual HDMI
SPDIF
CI/CA
MPEG
PRIMARY
LV DS
VIDEO
SECONDARY
MEMORY
VIDEO
3D COMB
DIGITAL IF
AUDIO DEMOD
AUDIO IN
HDMI
SCALER,
AUDIO DSP
AUDIO DACS
AUDIO OUT
300 MHz
300 MHz
I2C
PWM
GPIOIRADCUART I2CGPIO Flash
SYSTEM
USB 2.0 CA
PNX8543x
DV INPUT
DV-ITU-656
AV-PIP
SPI
MPEG/H.264
I2S
RECEIVER
(8051)
CONTROLLER
AND DECODE
DECODER
channel decoder
PCMCIA
RGB
PROCESSOR
SYSTEM
CONTROLLER
DECODER
VIDEO
CPU
MIPS32 4KEc
01 x22 x
AV-D SP
REDUCTION
AND NOISE
DE-INTERLACE
OUTPUT
VIDEO
SUB-PICTURE
ENCODER
OUTPUT
VIDEO
channel)
(single or dual
flat panel display
DRAWING
ENGINE
DMA BLOCK
PCI 2.2
EN 43Q548.1E LA7.
7.6Video and Audio Processing - PNX8543
The PNX8543 is the main audio and video processor (or
System-on-Chip) for this platform. It is a member of the
PNX85xx SoC family (described in earlier chassis) with the
addition of the MPEG4 functionality; the separate STi710x
MPEG4 decoder is no longer implemented in this platform.
The PNX8543 handles the digital and analogue audio- and
video decoding and processing. The processor is a MIPS32
general purpose CPU and a 8051-based TV controller for
power management and user event handling.
•For a functional diagram of the PNX8543, refer
to Figure 7-9
.
Figure 7-9 PNX8543 functional diagram
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VMSP
HDMI_UIP
PC_RX
AFE
(ADC)
DAC
LV DS_BUF
LV DS_TX
CPIPE_
L2QTV
CPIPE_
L2VO
MCU-DDR
DMA BUS
DDR2-SDRAM
PNX8543x
VCP_
UIP
DENC
DAC
VCP_
WIFD
HDMI_
RX
MBVP_
L2VO2
MBVP_
L2QTV
MBVP_
L2VO1
A
A
GFX2
PIP
CVBS1/Y
monitor
main
CVBS2/C
monitor
HDMI
VCP/PC
LOW IF
CVBS
RGB
Dual HDMI
FPD-LVDS1
LCD panel
MUX
VCP_RX
2D_DE
VIP
(ITU-656)
PC_
UIP
GFX1
FPD-LVDS2
LCD panel
CVBS/Y
C
CAI
TS
TSDO
TSDI
CMD
PCMCIA
TSI
MSVD
DV (including
ITU-656)
YPbPr
VGA
7.6.1 Video Subsystem
Circuit Descriptions
Refer to Figure 7-10
for the main video interfaces for the
PNX8543 and the video signal flow between blocks and
memory.
The Video Subsystem consist of the following blocks:
•Analogue Front-End (AFE) block
•Video and PC Capture (VPC/PC) pipe
•HDMI Receiver interface
•Memory-Based Video Processor MBVP)
•Video Composition Pipe (CPIPE)
•Memory Based Video Processor (MBVP) VO-1
•Memory Based Video Processor (MBVP) VO-2
•Video Composition Pipe (CPIPE)
•Dual Flat Panel Display-LVDS (FPD-LVDS)
•Digital Encoder (DENC)
•Digital Video VIP
•2D graphics block.
2009-Apr-03
Figure 7-10 PNX8543 video flow diagram
Page 45
7.6.2Audio Subsystem
18440_204_090226.eps
090226
VMSP
ADC
MCU
DDR2-SDRAM
PNX8543x
HDMI_RX
CAI
SPDIF-IN
I
2
S
SPDIF
DigIF
ASDEC
(DEMODULATION
AND DECODING)
TM2270
(MPEG, AC-3, MP3
DECODER)
SPDIF-OUT
AO
AI
APP - AUDIO DSP
(POST PROCESSING)
2
DAC
2
DAC
2
DAC
2
DAC
DMA BUS
I2S-OUT-SD3
I2S-OUT-SD4
I2S-OUT-WS
I2S-OUT-SCK
I2S-OUT-OSC
Main L, R
HP L, R
SCART2 L, R
SCART1 L, R
HDMI
SPDIF-IN1
IF
SSIF
L, R
TS-IN
SPDIF-Out
SPDIF-IN2
I2S-OUT-SD1
I2S-OUT-SD2
I2S-IN-SD3
I2S-IN-SD4
I2S-IN-WS
I2S-IN-SCK
I2S-IN-OSC
I2S-IN-SD1
I2S-IN-SD2
SPDIF
ADC
4
4 × I2S
4
4 × I2S
XB3
XB4
from
XB4
fast SPDIF
XB1
XB2
4 × I2S
Circuit Descriptions
EN 45Q548.1E LA7.
Refer to Figure 7-11
for the main audio interfaces for the
PNX8543 and the audio signal flow between blocks and
memory.
Figure 7-11 PNX8543 audio flow diagram
The Audio Subsystem consist of the following blocks:
•Analogue Audio Front End (AAFE) used to capture
Baseband Audio Inputs and to sample Secondary Sound
IF (SSIF) directly or via Low-IF input
•HDMI Receiver interface block
•SPDIF input block
•Audio Input (AI) block
•Audio Output (AO) block
•Demodulation & Decoding (ASDEC) DSP for decoding all
analogue terrestrial TV sound standards
•Audio Post-Processing (APP) block
•Digital Audio decoder.
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090226
JTAG_MMIO
UART2
UART1
IIC2_DMA
IIC3_DMA
MIPS
4KEc
SYSTEM
CONTROLLER
80C51
PCI_XIO
CAI
MCU_DDR
DMA BUS
DCS-NETWORK
DDR2-SDRAM
I2C-2
I2C-3
EJTAG
PNX8543x
UART-1
UART-2
I2C-MC
UART-3
PWMs
GPIOs
CI/CA
PCI/XIO
EJTAG
USB2.0USB
AVD SP
IIC4_DMA
I2C-1
7.6.3Connectivity and Compute Subsystem
Circuit Descriptions
Refer to Figure 7-12
subsystem.
for the connectivity and compute
The Connectivity Subsystem consists of:
•PCI/XIO interface
•USB2.0 interface
•Three 2-wire UARTs
•Four Master/Slave I
•Common Interface/Conditional Access Interface.
The Computing Subsystem consists of:
•32-bit MIPS RISC core
•Enhanced JTAG (EJTAG) block inside the MIPS
•JTAG_MMIO blocks
•TV controller
•Audio/Video DSP (AV_DSP)
•Memory Control Unit (MCU).
2
C interfaces
Figure 7-12 PNX8543 connectivity and compute subsystem
The FLASH RAM (item 7M00) and/or PNX8543 (item 7600)
can only be exchanged by an authorised central workshop with
dedicated programming tools. Due to the presence of (CI+)
keys in the components, unauthorised exchange of these
components will always result in a defective board.
7.7Common Interface CI+
Together with this platform, an extension to the Common
Interface (CI) Conditional Access system is added, called CI+.
CI+ or Common Interface Plus is a specification that extends
the Common Interface (DVB-CI) as described in the digital
broadcasting standard DVB.
2009-Apr-03
Page 47
The weakness of the conventional CI module used in a
CAM
PNX8543
TS-INP UT
Transport Streams
CA-Control
CA-MDI
CA-MDO
CA-CTRL
PCI/XIO
Proprietary CA
scrambling
CI + StandardisedCCS
scrambling
DES/AES
descrambler
MHEG MMI
application
Matrix
Matrix
tuner
channel
decoder
DES/AES
scrambler
CA clien t
MHEG CI+
decoder
demux
(SC )
Command
inte rface
Transport stream
inte rface
18440_221_090227.eps
090227
18310_203_090317.eps
090317
18310_204_090318.eps
090318
ARM
SDA
SCL
SEL1
SEL2
SPI C LOCK
SPI LATCH
SPI D ATA OU T
SPI DATA RETURN
PWM CLOCK
BLANK
PROG
SPI LA TCH 2
(only on dc/dc for aurea)
C S EEPROM
TEM P
Scl1
Sd a1
tb d
tb d
Sck
P0.7
MOSI
MISO
P0.8
TxD
RxD
Rxd0
Txd 0
MAT0.0
MAT1.0
tb d
tb d
P0.10
Conditional Access system was the absence of a Copy
Protection mechanism, as decrypted content could be sent
over the PCMCIA interface unscrambled. With the CI+
extension, a form of copy protection is established between the
Conditional Access Module (CAM) and the Integrated Digital
Television (IDTV). The security mechanisms in CI+ are
derived/copied from POD (with the exception of Out Of Band
(OOB) used in US CA systems). For more information about
conventional CA systems using a CI module, refer to the
BJ3.0E L/PA or BL2.xU Service Manual.
The CI+ standard is downwards compatible with the existing CI
standard.
The following figure shows the implementation of the CI+
Conditional Access system in the TV543 platform.
7.8Ambi Light
Circuit Descriptions
Figure 7-13 CI+ Conditional Access implementation
EN 47Q548.1E LA7.
The Ambi Light architecture in this platform has been entirely
renewed. The characteristics are:
•Additional DC/DC board generating 12/16/24 V (optional)
•ARM processor (on DC/DC panel or AL board)
•Low-power LEDs
•SPI interface from ARM to LED drivers
2
C upgradeable via USB
•I
•Each AL module has a temperature sensor.
Figure 7-14 Interface between Ambi Light and SSB
7.8.1ARM controller
The use of the DC/DC board is optional. In case no DC/DC
board is implemented, the ARM processor is located on one of
the AL boards.
Refer to Figure 7-14
for the Ambi Light architecture.
Refer to Figure 7-15
below for signal interfacing to and from the
ARM controller. The ARM controller is located on the DC/DC
board (item no. 7302) or AL panel (item no. 7102).
Figure 7-15 ARM controller interface
Data transfer between ARM processor and LED drivers is
executed by a Serial Peripheral Interface (SPI) bus interface.
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Amb ilig ht modu le 1Am b ilight mod u le 2Amb ilight m odu le N
ARM
LED
DRIVER
1
LED
DRIVER
2
LED
DRIVER
N
SPI data in
S o utSinSo utS o utS in
SPI clo ck (S CLK)
SPI la tch (XL AT)
PRO G (VPRG )
BLANK
PW M CLOC K ( GSCLK)
o ut16
o ut16
o ut16
SPI d ata retu rn
18310_206_090318.eps
090318
Amb iligh t mod ule 1Amb iligh t mod ule 2
ARM
TEMP
SENS OR
Vcc
Pull-upPull-upPull-up
TEMP
SENS OR
Vcc
Amb iligh t mod ule N
TEMP
SENS OR
Vcc
Circuit Descriptions
The SPI bus is a synchronous serial data link standard that
operates in full duplex mode.
For debugging purposes, the working principle is given below:
•At startup the controller will read-out matrix data from the
EEPROM devices (via SPI DATA RETURN)
•Before operation, the driver current is set via SPI, with
driver in DC mode
•During normal operation the controller receives RGB-,
configuration-, operation mode- and topology data via I
•The controller converts the I
2
C RGB data via the matrixes
2
to SPI LED data
•Via data return the controller receives error data (if
applicable).
Also PWM clock and BLANK signals are generated by the
controller. The controller can be reprogrammed via I
USB). The controller can receive matrix values via I
2
C (via
2
C, which
will be stored in the EEPROM of each AL module via the SPI
bus. The temperature sensor in each AL module controls the
TEMP line; in case of a too high temperature the controller will
reduce the overall brightness.
7.8.2LED driver communication (via SPI bus)
C
Refer to Figure 7-16
below for signal interfacing between the
ARM controller and the LED drivers on the AL boards, and the
LED drivers and the EEPROMs on the AL boards.
Figure 7-16 SPI communication between ARM controller and LED drivers
The ARM controller communicates with the LED drivers (on
each AL module) via an SPI bus. For debugging purposes, the
working principle is given below:
Each AL board is equipped with a temperature sensor. If one of
the sensors detects a temperature over the threshold, the
TEMP line is pulled LOW which results in brightness reduction.
•Data from the ARM controller is linked through the drivers,
which are connected in cascade
•SPI CLK, SPI LATCH, PROG, BLANK and PWM CLOCK
are going directly from the controller to each driver
•SPI DATA RETURN is linked from the last driver to the
controller: controller decides which driver returns data.
7.8.3Temperature Control
Refer to Figure 7-17
for signal interfacing between the ARM
controller and the temperature sensor on the AL boards.
Figure 7-17 Communication between ARM controller and
temperature sensor
2009-Apr-03
Page 49
8.IC Data Sheets
IC Data Sheets
EN 49Q548.1E LA8.
This chapter shows the internal block diagrams and pin
configurations of ICs that are drawn as “black boxes” in the
electrical diagrams (with the exception of “memory” and “logic”
ICs).