1. Technical Specifications, Connections, and Chassis
Overview2
2. Safety Instructions, Warnings, and Notes4
3. Directions for Use5
4. Mechanical Instructions17
5. Service Modes, Error Codes, and Fault Finding 20
6. Wiring Diagram, Block Diagrams, and Overviews
Wiring Diagram31
Block Diagram Supply and Supply Lines32
Testpoint Overview Aux and Power Supply33
Block Diagram Video34
Testpoint Overview Small Signal Board35
Block Diagram Audio36
I2C IC’s overview37
7. Circuit Diagrams and PWB LayoutsDiagram PWB
Audio Panel and Supply, DC Protection (A1) 3845-46
Filters(A2) 3945-46
Audio Amplifier Left High(A3) 4045-46
Audio Amplifier Left Low(A4) 4145-46
Audio Amplifier Right High(A5) 4245-46
Audio Amplifier Right Low(A6) 4345-46
Supply & DC Protection(A7) 4445-46
Small Signal Board (AA)(B1-B20) 47-7576-87
Small Signal Board (AB)(B1-B19) 88-102 103-114
LED/Switch Panel(LD) 115116
LED/Switch Panel (ITV)(LD) 117118
Side I/O(O) 119120
Side I/O (ITV)(O) 121122
Top Control(P) 123124
Aux Supply(SA) 125126-128
Power Supply(SP1) 129131-132
Doubler(SP2) 130131-132
8. Alignments133
9. Circuit Descriptions, Abbreviation List, and IC Data
Sheets137
Abbreviation list154
IC Data Sheets156
Copyright 2004 Philips Consumer Electronics B.V. Eindhoven, The Netherlands.
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.
Published by WO 0472 Service PaCEPrinted in The NetherlandsSubject to modificationEN 3122 785 13481
EN 2FTL13U AA & AB1.
Technical Specifications, Connections, and Chassis Overview
1.Technical Specifications, Connections, and Chassis Overview
Index of this chapter:
1.1 Technical Specifications
1.2 Connections
1.3 Chassis Overview
Note: Figures below can deviate slightly from the actual
situation, due to the different set executions.
•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.
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 which
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 Mohm and 12 Mohm.
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 avoid touching of any
inner parts by the customer.
2.2Warnings
•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. Available
ESD protection equipment:
– Complete kit ESD3 (small tablemat, wristband,
connection box, extension cable and earth cable) 4822
310 10671.
– Wristband tester 4822 344 13999.
•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.
2.3Notes
2.3.1General
•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 (see chapter 5) with a colour bar
signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated
otherwise) and 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.
•The semiconductors indicated in the circuit diagram and in
the parts lists, are interchangeable per position with the
semiconductors in the unit, irrespective of the type
indication on these semiconductors.
•Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic” and the “double-D symbol”, are
trademarks of Dolby Laboratories.
2.3.2Schematic 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 kohm).
•Resistor values with no multiplier may be indicated with
either an "E" or an "R" (e.g. 220E or 220R indicates 220
ohm).
•All capacitor values are given in micro-farads (µ= x10
nano-farads (n= x10
•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 in the Spare Parts
List. Therefore, always check this list when there is any
doubt.
2.3.3Rework on BGA (Ball Grid Array) ICs
General
Although (LF)BGA assembly yields are very high, there may
still be a requirement for component rework. By rework, we
mean the process of removing the component from the PWB
and replacing it with a new component. If an (LF)BGA is
removed from a PWB, the solder balls of the component are
deformed drastically so the removed (LF)BGA has to be
discarded.
Device Removal
As is the case with any component that, it is essential when
removing an (LF)BGA, the board, tracks, solder lands, or
surrounding components are not damaged. To remove an
(LF)BGA, the board must be uniformly heated to a temperature
close to the reflow soldering temperature. A uniform
temperature reduces the chance of warping the PWB.
To do this, we recommend that the board is heated until it is
certain that all the joints are molten. Then carefully pull the
component off the board with a vacuum nozzle. For the
appropriate temperature profiles, see the IC data sheet.
Area Preparation
When the component has been removed, the vacant IC area
must be cleaned before replacing the (LF)BGA.
Removing an IC often leaves varying amounts of solder on the
mounting lands. This excessive solder can be removed with
either a solder sucker or solder wick. The remaining flux can be
removed with a brush and cleaning agent.
After the board is properly cleaned and inspected, apply flux on
the solder lands and on the connection balls of the (LF)BGA.
Note: Do not apply solder paste, as this has shown to result in
problems during re-soldering.
-9
), or pico-farads (p= x10
-12
-6
),
).
Directions for Use
EN 5FTL13U AA & AB3.
Device Replacement
The last step in the repair process is to solder the new
component on the board. Ideally, the (LF)BGA should be
aligned under a microscope or magnifying glass. If this is not
possible, try to align the (LF)BGA with any board markers.
To reflow the solder, apply a temperature profile according to
the IC data sheet. So as not to damage neighbouring
components, it may be necessary to reduce some
temperatures and times.
More Information
For more information on how to handle BGA devices, visit this
URL: www.atyourservice.ce.philips.com (needs subscription,
not available for all regions). After login, select “Magazine”,
then go to “Workshop Information”. Here you will find
Information on how to deal with BGA-ICs.
2.3.4Lead Free Solder
Philips CE is going to produce lead-free sets (PBF) from
1.1.2005 onwards.
P
b
Figure 2-1 Lead-free logo
This sign normally has a diameter of 6 mm, but if there is less
space on a board also 3 mm is possible.
Regardless of this logo (is not always present), one must treat
all sets from this date onwards according to the following rules.
Due to lead-free technology some rules have to be respected
by the workshop during a repair:
•Use only lead-free soldering tin Philips SAC305 with order
code 0622 149 00106. 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 at least a solder-tip temperature of 400°C.
– To stabilise the adjusted temperature at the solder-tip.
– To exchange solder-tips for different applications.
•Adjust your solder tool so that a temperature around 360°C
- 380°C is reached and stabilised 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 rise 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 not to avoid, clean carefully the
solder-joint from old tin and re-solder with new tin.
•Use only original spare-parts listed in the Service-Manuals.
Not listed standard material (commodities) has to be
purchased at external companies.
•Special information for lead-free BGA ICs: these ICs will be
delivered in so-called "dry-packaging" to protect the IC
against moisture. This packaging may only be opened
short before it is used (soldered). Otherwise the body of the
IC gets "wet" inside and during the heating time the
structure of the IC will be destroyed due to high (steam)pressure inside the body. If the packaging was opened
before usage, the IC has to be heated up for some hours
(around 90°C) for drying (think of ESD-protection!).
Do not re-use BGAs at all!
•For sets produced before 1.1.2005, containing leaded
soldering tin and components, all needed spare parts will
be available till the end of the service period. For the repair
of such sets nothing changes.
In case of doubt whether the board is lead-free or not (or with
mixed technologies), you can use the following method:
•Always use the highest temperature to solder, when using
SAC305 (see also instructions below).
•De-solder thoroughly (clean solder joints to avoid mix of
two alloys).
Caution: For BGA-ICs, you must use the correct temperatureprofile, which is coupled to the 12NC. For an overview of these
profiles, visit the website www.atyourservice.ce.philips.com
(needs subscription, but is not available for all regions)
You will find this and more technical information within the
"Magazine", chapter "Workshop information".
For additional questions please contact your local repair help
desk.
2.3.5Practical 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.
3.Directions for Use
You can download this information from the following websites:
Remote Control Direct Entry Codes for Accessory Devices
This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules.These limits are designed to
provide reasonable protection against harmful
interference in a residential installation.This
equipment generates, uses,and can radiate radio
frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful
interference to radio communications. However,there
is no guarantee that interference will not occur in a
particular installation. If this equipment does cause
harmful interference to radio or television reception,
which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the
interference by one or more of the following
measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and
the receiver.
Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.
Consult the dealer or an experienced radio or
television technician for help.
Modifications -
The FCC requires the user to be notified that any
changes or modifications made to this device that are
not expressly approved by Philips Consumer
Electronics may void the user’s authority to operate
the equipment.
Cables -
Connections to this device must be made with
shielded cables with metallic RFI/EMI connector hoods
to maintain compliance with FCC Rules and
Regulations.
Canadian notice -
This Class B digital apparatus meets all requirements
of the Canadian Interference-Causing Equipment
Regulations.
Avis Canadien -
Cet appareil numérique de la classe B respecte toutes
les exigences du Règlement sur le matériel brouilleur
du Canada.
Regulatory Notices - Federal Communications Commission Notice
Directions for Use
4.Mechanical Instructions
Mechanical Instructions
EN 17FTL13U AA & AB4.
Index of this chapter:
4.1 Service Positions
4.2 Assy/PWB Removal
4.3 Set Re-assembly
Notes:
•Figures below can deviate slightly from the actual situation,
due to the different set executions.
•Follow the disassemble instructions in described order.
4.1Service Positions
First, put the TV set in its service position. Therefore, place it
upside down on a table top (use a protection sheet or a foam
cushion).
4.1.1The Foam Bars
or falling. They can be mounted and removed quickly and
easily with use of the provided screws, which can be tightened
and loosened manually without the use of tools.
Caution: Only use the provided screws, otherwise it is possible
to damage the monitor inside.
4.2Assy/PWB Removal
4.2.1Rear Cover
Warning: Disconnect the mains power cord before you remove
the rear cover.
First, unscrew the rear cover:
1. Remove the screws that secure the rear cover. The screws
are located at the top, bottom, left and right sides, also
there are three deeper located screws next to the stands.
2. Lift the rear cover from the cabinet. Make sure that wires
and flat foils are not damaged during cover removal.
4.2.2Side I/O Panel
2
CL 36532051_002.eps
Figure 4-1 Foam bars
The foam bars (order code 3122 785 90580) can be used for
all types and sizes of Flat TVs. By laying the plasma or LCD TV
flat on the (ESD protective) foam bars, a stable situation is
created to perform measurements and alignments. By placing
first a mirror flat on the table under the TV, you can easily see
if something is happening on the screen.
The bars are also handy for replacing the screen.
4.1.2The Aluminum Stands
190603
1
CL 36532064_050.eps
161003
Figure 4-3 Side I/O panel
1. Disconnect the cable from the panel.
2. To replace the complete bracket, remove the two fixing
screws (1) on either side of the panel.
3. To get the panel out, push the two brackets (2) out and lift
the panel.
4. Remove the panel.
CL 36532051_001.eps
040703
Figure 4-2 Aluminium stands
The aluminum stands (order code 3122 785 90480) can be
used to do measurements and alignments and they are also
very suitable to perform duration tests. With these stands the
set does not take much space, has no risk of over heating and/
EN 18FTL13U AA & AB4.
Mechanical Instructions
4.2.3Main switch/LED panel
Figure 4-4 Main switch/LED panel
1. Disconnect the cable on the rear of the panel.
2. Remove the two fixing screws (1).
4.2.4Small Signal Panel
4.2.5Audio Amplifier
1
1
CL 36532064_051.eps
161003
CL 36532064_053.eps
161003
Figure 4-6 Audio Amplifier
1. Disconnect all cables from the panel.
2. Remove the fixing screws (1) of the panel.
1
2
3
CL 36532064_052.eps
201003
Figure 4-5 Small Signal panel
1. Disconnect all cables from the panel.
Caution: The connectors of the LVDS cable (1) are very
fragile, be careful not to damage them.
2. Remove the fixing screws M3x10 (2) and M3x6 (3) from the
panel.
4.2.6Auxiliary Supply
Figure 4-7 Auxiliary Supply
1. Disconnect all cables from the panel.
2. Remove the fixing screws (1) of the panel.
1
CL 36532064_054.eps
161003
Mechanical Instructions
EN 19FTL13U AA & AB4.
4.2.7Main Power Supply
1
Figure 4-8 Wall mounting bracket
1. Remove the screws (1) at both top and bottom of the
mounting bracket.
2. Remove the bracket before accessing the Main Power
Supply panel.
CL 36532064_055.eps
161003
4.2.8LCD Panel
1
2
1
Figure 4-10 LCD panel
Make sure that the power is switched “off” and that all
necessary cables are disconnected.
To replace the LCD panel (including the backlight), remove all
the panels first (including the two mounting brackets), as
mentioned above.
1. Remove the fixing screws (1) at the border of the panel with
a no. 10 Torx screwdriver.
2. Remove the fixing screws (2) at the panel with a no. 20
Torx screwdriver.
3. Lift the LCD panel out of the frame.
CL 36532064_057.eps
201003
1
CL 36532064_056.eps
Figure 4-9 Main Power Supply
1. Disconnect the cables from the panel.
2. Remove the fixing screws (1) at each side of the panel.
201003
4.3Set Re-assembly
To re-assemble the whole set, execute all processes in reverse
order.
Notes:
•When as you have removed the plastic back cover, you
must replace the speaker-box sealing foam (12nc: 3104
303 10791). This is to ensure that the loudspeakers are
airtight. Do not stretch the foam during mounting. Pay
special attention to the corners, to make sure that the foam
is not stretched and that it is pushed in the corners.
•While re-assembling, make sure that all cables are placed
and connected in their original position
EN 20FTL13U AA & AB5.
Service Modes, Error Codes, and Fault Finding
5.Service Modes, Error Codes, and Fault Finding
Index of this chapter:
5.1 Test Points
5.2 Service Modes
5.3 Problems and Solving Tips (related to CSM)
5.4 ComPair
5.5 Error Codes
5.6 The Blinking LED Procedure
5.7 Protections
5.8 Repair tips
5.9 Software Downloading
5.1Test Points
The chassis is equipped with test points printed on the circuit
board assemblies.
Perform measurements under the following conditions:
•Service Default Mode.
•Video: color bar signal.
•Audio: 3 kHz left, 1 kHz right.
5.2Service Modes
Service Default Mode (SDM) and Service Alignment Mode
(SAM) offer several features for the service technician, while
the Customer Service Mode (CSM) is used for communication
between a Philips Customer Care Center (P3C) and a
customer.
There is also the option of using ComPair, a hardware interface
between a computer (see requirements below) and the TV
chassis. It offers the ability of structured troubleshooting, test
pattern generation, error code reading, software version
readout, and software upgrading.
Minimum requirements: a Pentium processor, Windows 95/
98, and a CD-ROM drive (see also paragraph “ComPair”).
5.2.1Service Default Mode (SDM)
menu will appear. To switch it off, push the “MENU” button
again.
•Short for a moment the two solder pads (item 9018) on the
SSP, with the indication “SDM”. Activation can be
performed in all modes, except when the set has a problem
with the main microprocessor.
Caution: If the SDM is entered via the pins, all the
software-controlled protections are de-activated.
•Use the DST-emulation feature of ComPair.
After entering this mode, “SDM” will appear in the upper right
corner of the screen.
How to navigate
When you press the “MENU” button 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 STANDBY via the RC-transmitter.
•Click the “EXIT” button on the DST-emulation feature of
ComPair.
•Via a standard customer RC-transmitter: key in “00”sequence.
5.2.2Service 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.
Specifications
•Operation hours counter.
•Software version.
•Option settings.
•Error buffer reading and erasing.
•Software alignments.
Purpose
•To create a pre-defined setting, to get the same
measurement results as given in this manual.
•To override SW protections.
•To start the blinking LED procedure.
Specifications
•Tuning frequency: 61.25 MHz (Channel 3).
•Color system: NTSC.
•All picture settings at 50 % (brightness, color, contrast).
•All sound settings at 50 %, except volume at 25 %.
•All service-unfriendly modes (if present) are disabled, like:
– (Sleep) timer.
– Child/parental lock.
–Blue mute.
– Automatic volume limiter (AVL).
– Auto switch-off (when no video signal was received for
10 minutes).
– Skip/blank of non-favorite pre-sets.
– Smart modes.
– Auto store of personal presets.
– Auto user menu time-out.
How to enter SDM
Use one of the following methods:
•Use the standard RC-transmitter and key in the code
“062596”, directly followed by the “MENU” button.
Note: It is possible that, together with the SDM, the main
How to enter SAM
Use one of the following methods:
•Via a standard RC transmitter: key in the code “062596”
directly followed by the “OSD [i+]” button. After entering
SAM with this method a service warning will appear on the
screen, you can continue by pressing any digit key on the
RC.
•Short for a moment the two solder pads (item 9017) on the
SSP with the indication "SAM". Depending on the software
version, it is possible that a service warning will appear.
You can continue by pressing any digit key on the RC.
•Use the DST-emulation feature of ComPair.
•Press the ALIGN button on the DST while the set is in the
normal operation
After entering this mode, “SAM” will appear in the upper right
corner of the screen.
Contents of SAM:
•OPERATION HOURS. Displays the accumulated total of
operation hours (not the standby hours).
•SW VERSION INFO.
– ROM VERSION. Displays the date of the software and
the software version of the ROM. Example:
TL13US_1.0_05081 = AAAABB_X.Y_NNNNN.
•AAAA= the chassis name.
•BB= the region (EU= Europe, AP= Asia Pacific
PAL/Multi, AN= Asia Pacific NTSC, US= USA, LT=
LATAM).
Service Modes, Error Codes, and Fault Finding
EN 21FTL13U AA & AB5.
•X.Y= the software version, where X is the main
version number (different numbers are not
compatible with one another) and Y is the sub
version number (a higher number is always
compatible with a lower number).
•NNNNN= last five digits of 12nc code software.
– SW VERSION EPLD. Displays the software version of
the EPLD.
•ERRORS (followed by maximal 10 errors). The most
recent error is displayed at the upper left (for an error
explanation see paragraph “Error Codes”).
•DEFECTIVE MODULE. Here the module that generates
the error is displayed. If there are multiple errors in the
buffer, which are not all generated by a single module,
there is probably another defect. It will then display the
message “UNKNOWN” here.
•RESET ERROR BUFFER. When you press the “OK”
button, the error buffer is reset.
•ALIGNMENTS. This will activate the “ALIGNMENTS” submenu's.
•DEALER OPTIONS. Extra features for the dealers.
•SERVICE OPTIONS. Extra features for Service.
•INITIALISE NVM. When an NVM was corrupted (or
replaced) in former chassis (like the N8), the
microprocessor replaces the content with default data (to
assure that the set can operate). However, all pre-sets and
alignment values are gone now, and option numbers are
not correct. Therefore, this was a very drastic way. In this
chassis, the procedure is implemented in another way: The
moment the processor recognizes a corrupted NVM, the
“initialize NVM” line will be highlighted. Now, you can do
two things (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 Philips Service department an extra possibility for
diagnosis (e.g. when Development asks for this).
– Initialize the NVM (same as in the past, however now it
happens conscious).
•STORE. All options and alignments are stored when
pressing the “OK”-button
•FUNCTIONAL TEST. All devices are tested via the “OK”
button. Eventual errors are displayed in the error buffer.
The error buffer is not erased, the content returns when this
test is terminated.
•DAILY MENUS. With the “OK” button, you can go to the
normal user menu. SAM is still active in the background.
With the “MENU” button, you return from the user menu to
SAM menu. This feature can be helpful to quickly change
some settings in the user menu.
•SW MAINTENANCE.
– UPGRADE. For more info see paragraph "Software
downloading" at the end.
How to navigate
•In SAM, you can select the menu items with the “CURSOR
UP/DOWN” key on the RC-transmitter. The selected item
will be highlighted. When not 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, it is possible to:
– (De) activate the selected menu item.
– Change the value of the selected menu item.
– Activate the selected submenu.
How to exit SAM
Use one of the following methods:
•Press the “MENU” button on the RC-transmitter, or
•Press the “POWER” button on the remote control
transmitter, or
•Press the “EXIT” button on the DST-emulation feature of
ComPair.
5.2.3Customer Service Mode (CSM)
Purpose
When a customer is having problems with his TV-set, he can
call his dealer. The service technician can than 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.
How to enter CSM
Use one of the following methods:
•Press the “MUTE” button on the RC-transmitter
simultaneously with the “MENU” button on the TV (top
control) for at least 4 seconds.
•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 on the RCtransmitter, you can navigate through the menus.
Contents of CSM
CUSTOMER SERVICE MENU 1
•SOFTWARE VERSION (example: TL13US_1.0_05081).
Displays the built-in software version. In case of field
problems related to software, software can be upgraded
(for more details, see paragraph Software downloading).
You will find details of the software versions in the chapter
“Software Survey” of the “Product Survey - Color
Television” publication. This publication is generated four
times a year.
•SOFTWARE VERSION EPLD. The 12NC-number of the
built-in EPLD software.
•FEATURE BOX. The 12NC-number of the built-in Feature
Box software.
•SET TYPE. This information is very helpful for a helpdesk/
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.
•CODE 1. Gives the latest five errors of the error buffer. As
soon as the built-in diagnose software has detected an
error the buffer is adapted. The last occurred error is
displayed on the leftmost position. Each error code is
displayed as a 3-digit number. When less than 10 errors
occur, the rest of the buffer is empty (000). See also
paragraph Error Codes for a description.
•CODE 2. Gives the first five errors of the error buffer. See
also paragraph Error Codes for a description.
•VOLUME. Gives the last status of the volume as set by the
customer. The value can vary from 0 (volume is minimum)
to 100 (volume is maximum). Volume values can be
changed via the volume key on the RC-transmitter.
•BRIGHTNESS. Gives the last status of the brightness as
set by the customer. The value can vary from 0 (brightness
is minimum) to 100 (brightness is maximum). Brightness
values can be changed via the “CURSOR LEFT” and
“CURSOR RIGHT” keys on the RC-transmitter after
pressing the “MENU” button and selecting “PICTURE” and
“BRIGHTNESS”.
•CONTRAST. Gives the last status of the contrast as set by
the customer. The value can vary from 0 (contrast is
minimum) to 100 (contrast is maximum). Contrast values
can be changed via “CURSOR LEFT” and “CURSOR
RIGHT” keys on the RC-transmitter after pressing the
“MENU” button and selecting “PICTURE” and
“CONTRAST”.
EN 22FTL13U AA & AB5.
Service Modes, Error Codes, and Fault Finding
CUSTOMER SERVICE MENU 2
•COLOUR. Gives the last status of the color saturation, as
set by the customer. The value can vary from 0 (color is
minimum) to 100 (color is maximum). Color values can be
changed via “CURSOR LEFT” and “CURSOR RIGHT”
keys on the RC-transmitter after pressing the “MENU”
button and selecting “PICTURE” and “COLOUR”.
•HUE. Gives the last status of the hue setting. Hue values
can be changed via “MENU”, “PICTURE” and “TINT”. The
value can vary from -50 to +50.
•SHARPNESS. Gives the sharpness value. The value can
vary from 0 (sharpness is minimum) to 7 (sharpness is
maximum). In case of bad antenna signals, a too high
value of the sharpness can result in a noisy picture.
Sharpness values can be changed via the “CURSOR
LEFT” and “CURSOR RIGHT” keys on the RC-transmitter
after pressing the “MENU” button and selecting “PICTURE”
and “SHARPNESS”.
•HEADPHONE VOLUME. Gives the last status of the
headphone volume, as set by the customer. The value can
vary from 0 (volume is minimum) to 100 (volume is
maximum). Headphone volume values can be changed via
the “CURSOR LEFT” and “CURSOR RIGHT” keys on the
RC-transmitter after pressing the “MENU” button and
selecting “SOUND” and “HEADPHONE VOLUME”.
•SURROUND MODE. Indicates the by the customer
selected surround mode (or automatically chosen mode).
Possible values are “OFF”, “INCREDIBLE SURROUND”
OR “DOLBY VIRTUAL”. These settings can be influenced
after pressing the “MENU” button and selecting “SOUND”
and SURROUND MODE”. It can also have been selected
automatically by signaling bits (internal software).
•TUNER FREQUENCY. Indicates the frequency the
selected transmitter is tuned to
•DIGITAL OPTION. Gives the selected digital mode,
“PROGRESSIVE SCAN”, “MOVIE PLUS” or “PIXEL
PLUS”. Change via “MENU”, “PICTURE”, “DIGITAL
PROCESSING”.
•TV SYSTEM. Not applicable for US.
•BALANCE. Indicates the balance settings, between “-50”
and “+50”. Change via “MENU”, “SOUND”, and
“BALANCE”. Not applicable for Dolby Pro Logic sets.
CUSTOMER SERVICE MENU 3
•CENTRE MODE. Indicates if center mode is set “ON” or
“OFF”. When center mode is on, all TV speakers are used
as one center speaker. Change Center mode via “MENU”,
“SETUP”, “SPEAKERS”, and “CENTRE MODE”.
•DNR. Gives the selected DNR setting (Dynamic Noise
Reduction), “OFF”, “MINIMUM”, “MEDIUM”, or
“MAXIMUM”. Change via “MENU”, “PICTURE”, “DNR”
•NOISE FIGURE. Gives the noise ratio for the selected
transmitter. This value can vary from 0 (good signal) to 127
(average signal) and to 255 (bad signal). For some
software versions, the noise figure will only be valid when
“Active Control” is set to “medium” or “maximum”.
•SOURCE. Indicates which source is used and the video/
audio signal quality of the selected source. (Example:
Tuner, Video/NICAM) Source: “TUNER”, “EXT1”, “EXT2”,
“EXT3”, “EXT4”, “SIDE”, “AV1”, “AV2”, “AV3” or “AV4”.
Video signal quality: “VIDEO”, “S-VIDEO”, “RGB 1FH”,
“YPBPR 1FH 480P”, “YPBPR 1FH 576P”, “YPBPR 1FH
1080I”, “YPBPR 2FH 480P”, “YPBPR 2FH 576P”, “YPBPR
2FH 1080I”, “RGB 2FH 480P”, “RGB 2FH 576P” or “RGB
2FH 1080I”. Audio signal quality: “STEREO”, “SPDIF 1”,
“SPDIF 2”, or “SPDIF”.
•AUDIO SYSTEM. Gives information about the audio
system of the selected transmitter: “ANALOG MONO”,
“ANALOG STEREO”, “PCM 2/0”, “DD 1/0”, “DD 2/0 LtRt”,
“DD 2/0 L0R0”, “DD 2/1”, “DD 2/2”, “DD 3/0”, “DD 3/1”, “DD
3/2”, “DD 1+1”, “MPEG 1/0”, “MPEG 2/0”, “MPEG 2/0 LtRt”,
“MPEG 2/1”, “MPEG 2/2”, “MPEG 3/0”, “MPEG 3/1”,
“MPEG 3/2”, “MPEG 1+1” or “MPEG 2+2”.
•TUNED BIT. Not applicable for US.
•SURROUND SPEAKERS. Not applicable in this set.
•ON TIMER. Indicates if the “On Timer” is set “ON” or “OFF”
and if the timer is “ON” also displays start time, start day
and program number. Change via “MENU”, “TV”,
“FEATURES”, and “ON TIMER”.
•PRESET LOCK. Indicates if the selected preset has a child
lock: “LOCKED” or “UNLOCKED”. Change via “MENU”,
“TV”, “FEATURES”, “CHILD LOCK”, and “CUSTOM
LOCK”.
CUSTOMER SERVICE MENU 4
•TV RATINGS LOCK. Gives the setting of V-chip as
selected by the customer (for more details see user
manual.)
– All: no content based rating.
– No Rating
–TV-Y
– TV-Y7
– TV-Y7-FV
–TV-G
– TV-PG
– TV-PG-D
– TV-PG-L
– TV-PG-S
– TV-PG-V
– TV-PG-14
– TV-PG-14-D
– TV-PG-14-L
– TV-PG-14-S
– TV-PG-14-V
–TV-MA
–TV-MA-L
–TV-MA-S
–TV-MA-V
– Only the "highest" value in every rating group is shown.
•MOVIE RATINGS LOCK. Gives the ability to select
access to individual movies based on their MPAA ratings
(see also user manual.)
– None
–All
–NR
–G
–PG
–PG-13
–R
–NC-17
–X
– Only the "highest" value in every rating group is shown.
•V-CHIP TV STATUS. Gives the setting of the V-chip as
applied by the selected TV-channel. Same values can be
shown as for “TV Ratings Lock”.
•V-CHIP MOVIE STATUS. Gives the status of the V-chip
from the selected TV-channel for individual movies based
on their MPAA rating. Same values can be shown as
‘Movie Ratings Lock.’
•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).
•AVL. Indicates the last status of AVL (Automatic Volume
Level): “ON” or “OFF”. Change via “MENU”, “TV”,
“SOUND”, “AVL”
CUSTOMER SERVICE MENU 5
•DELTA VOLUME. Indicates the last status of the delta
volume for the selected preset as set by the customer: from
“-12” to “+12”. Change via “MENU”, “TV”, “SOUND”,
“DELTA VOLUME”.
SW Event-log
•This item contains 'software event logging' information that
can be delivered to the development center on special
request.
Service Modes, Error Codes, and Fault Finding
EN 23FTL13U AA & AB5.
How to exit CSM
Use one of the following methods:
•After you press a key on the RC-transmitter (with exception
of the “CHANNEL”, “VOLUME” and digit (0-9) keys), or
•Press the “POWER” button on the remote control
transmitter or the television set.
5.3Problems and Solving Tips (related to CSM)
Note: Below described problems are all related to the TV
settings (visible in the CSM menu). The procedures to change
the value (or status) of the different settings are described
above. New value(s) are automatically stored.
5.3.1Picture Problems
Snowy/noisy picture
1. Check in CSM line NOISE FIGURE. In case the value is
"127" or higher, and the value is also high on other
programs, check the aerial cable/aerial system. For some
software versions, the noise figure will only be valid when
“Active Control” is set to “medium” or “maximum”.
2. Check in CSM lines SHARPNESS and NOISE FIGURE. In
case the value of line SHARPNESS is "3" or "4" and the
value of line NOISE FIGURE is high ("127" or higher),
decrease the "Sharpness” value.
Picture too dark
1. Press “Menu”, “TV”, “Picture”, “Smart Picture”. In case the
picture improves, increase the “Brightness” or the
“Contrast” value. The new value(s) are automatically
stored (in “personal” pre-set) for all TV channels.
2. Check in CSM line BRIGHTNESS and CONTRAST. If the
value of these lines is low (< "10"), increase the
“Brightness” or the “Contrast” value via the user menu.
Picture too bright
1. Press “Menu”, “TV”, “Picture”, “Smart Picture”. In case the
picture improves, decrease the “Brightness” or the
“Contrast” value. The new value(s) are automatically
stored (in “personal” pre-set) for all TV channels.
2. Check in CSM lines BRIGHTNESS and CONTRAST. If the
value of these lines is high (> 50), decrease the
“Brightness” value or increase the “Contrast” value via the
user menu.
White line around picture elements and text
1. Press “Menu”, “TV”, “Picture”, “Smart Picture”. In case the
picture improves, decrease the “Sharpness” value. The
new value is automatically stored (in “personal” pre-set) for
all TV channels.
2. Check in CSM line “Sharpness”. If the value is high,
decrease it. The new value is automatically stored for all
TV channels.
No picture
No proper signal is received. Check the aerial cable/aerial
system.
No picture or unstable picture
A scrambled or decoded signal is received.
Black and white picture
Check in CSM line COLOUR. In case the value is low (< "10"),
increase the “Color” value via the user menu. The new value is
automatically stored for all TV channels.
Menu text not sharp enough
1. Press “MENU”, “TV”, “PICTURE”, “SMART PICTURE”. In
case picture improves, decrease the contrast value. The
new value(s) are automatically stored for all TV channels.
2. Check line 8 “Contrast”. The value of line 8 is high (> 50).
Decrease the contrast value.
5.3.2Sound Problems
No sound from left and right speaker
Check line 6 “Volume”. The value is low. Increase the value of
“Volume”. The new value(s) are automatically stored (in
“personal” pre-set) for all TV channels.
Sound too loud for left and right speaker
Check line 6 “Volume”. The value is high. Decrease the value
of “Volume”. The new value(s) are automatically stored (in
“personal” pre-set) for all TV channels.
5.4ComPair
5.4.1Introduction
ComPair (Computer Aided Repair) is a service tool for Philips
Consumer Electronics products. ComPair is a further
development on the European DST (service remote control),
which allows faster and more accurate diagnostics. ComPair
has three big advantages:
•ComPair helps you to quickly get an understanding on how
to repair the chassis in a short time by guiding you
systematically through the repair procedures.
•ComPair allows very detailed diagnostics (on I2C level)
and is therefore capable of accurately indicating problem
areas. You do not have to know anything about I2C
commands yourself because ComPair takes care of this.
•ComPair speeds up the repair time since it can
automatically communicate with the chassis (when the
microprocessor is working) and all repair information is
directly available. When ComPair is installed together with
the SearchMan electronic manual of the defective chassis,
schematics and PWBs are only a mouse click away.
5.4.2Specifications
ComPair consists of a Windows based faultfinding program
and an interface box between PC and the (defective) product.
The ComPair interface box is connected to the PC via a serial
or RS232 cable.
For this chassis, the ComPair interface box and the TV
communicate via a bi-directional service cable via the service
connector.
The ComPair faultfinding program is able to determine the
problem of the defective television. ComPair can gather
diagnostic information in two ways:
•Automatic (by communication with the television): ComPair
can automatically read out the contents of the entire error
buffer. Diagnosis is done on I2C level. ComPair can access
the I2C bus of the television. ComPair can send and
receive I2C commands to the micro controller of the
television. In this way, it is possible for ComPair to
communicate (read and write) to devices on the I2C
busses of the TV-set.
•Manually (by asking questions to you): Automatic
diagnosis is only possible if the micro controller of the
television is working correctly and only to a certain extends.
When this is not the case, ComPair will guide you through
the faultfinding tree by asking you questions (e.g. Does the
screen give a picture? Click on the correct answer: YES /
NO) and showing you examples (e.g. Measure test-point I7
and click on the correct oscillogram you see on the
oscilloscope). You can answer by clicking on a link (e.g.
text or a waveform picture) that will bring you to the next
step in the faultfinding process.
By a combination of automatic diagnostics and an interactive
question / answer procedure, ComPair will enable you to find
most problems in a fast and effective way.
EN 24FTL13U AA & AB5.
Beside fault finding, ComPair provides some additional
features like:
•Up- or downloading of pre-sets.
•Managing of pre-set lists.
•Emulation of the Dealer Service Tool (DST).
•If both ComPair and SearchMan (Electronic Service
Manual) are installed, all the schematics and the PWBs of
the set are available by clicking on the appropriate
hyperlink.
Example: Measure the DC-voltage on capacitor C2568
(Schematic/Panel) at the Mono-carrier.
– Click on the “Panel” hyperlink to automatically show
the PWB with a highlighted capacitor C2568.
– Click on the “Schematic” hyperlink to automatically
show the position of the highlighted capacitor.
5.4.3Stepwise Start-up
Under normal circumstances, a fault in the power supply, or an
error during start-up, will switch the television to protection
mode. ComPair can take over the initialization of the television.
In this way, it is possible to distinguish which part of the startup routine (hence which circuitry) is causing the problem.
Take notice that the transition between two steps can take
some time, so give the set some time to reach a stable state.
During the transition time, the LED can blink strangely.
Service Modes, Error Codes, and Fault Finding
Stepwise start- up explanation
This is realized via ComPair and is very helpful when a
protection is activated (see also chapter “Protections”). The
following diagram shows the start-up procedure of the set.
Every step of the stepwise start-up (also called trapped startup) in the diagram corresponds with the number of times the
led blinks.
Service Modes, Error Codes, and Fault Finding
EN 25FTL13U AA & AB5.
ON/OFF switch to ON
start time extraction
stand-by bit = off
Step 1
OFF
OTC gets supply voltage
OTC resets, Initialise IO
pins
Read NVM identification
enable watchdog
Stand-by
Activate MSP reset
Put Stand-by line LOW
Keep sound amplifiers muted with
sound enable = high
+5V and +8V is switched on
t<500ms
t<250ms
+8V and +5V get their nominal
level, detected by the OTC
Activate protection algorithms for +8V and +5V
and I²C (start I²C protection the moment the
component is initialised).
Step 2
Read rest of NVM information
Initialize HIP: IF, source selection, 2fh input, video processing
Switch on the syncoutput: set_syncout_tristate= off
Initialize tuner
Initialize 3D Combfilter (US
only)
Initialize PICNIC
Start time extraction
Deactivate reset MSP and
Initialize MSP
Initialize EPLD
t<1500ms
t>400ms
Step 3
Stand-by bit set ?
yes
Semi stand-by
no
Switch On PDP
Initialize PDP
Figure 5-1 Stepwise start-up diagram
ON
or
Step 5
CL 36532053_064.eps
221003
EN 26FTL13U AA & AB5.
Service Modes, Error Codes, and Fault Finding
Note (*):
• When the set is in stepwise mode and, due to stepping-up,
a protection is activated, the set will really go into protection
(blinking LED). The set will not leave the stepwise-mode
however. If state X is the state where the set went to
protection, stepwise start-up will return to state X-1. At
state (X-1) diagnostic measurements can be performed.
Also, in the short time the set is in state X but not yet in
protection, you can also do some measurements.
5.4.4How To Connect
1. First, install the ComPair Browser software (see the Quick
Reference Card for installation instructions).
2. Connect the RS232 interface cable between a free serial
(COM) port of your PC and the PC connector (marked with
“PC”) of the ComPair interface.
3. Connect the mains adapter to the supply connector
(marked with “POWER 9V DC”) of the ComPair interface.
4. Switch the ComPair interface “OFF”.
5. Switch the television set “OFF” with the mains switch.
6. Connect the ComPair interface cable between the
connector on the rear side of the ComPair interface
(marked with “I2C”) and the ComPair connector at the rear
side of the TV.
7. Plug the mains adapter in a mains outlet, and switch the
interface “ON”. The green and red LEDs light up together.
The red LED extinguishes after approx. 1 second while the
green LED remains lit.
8. Start the ComPair program and read the “Introduction”
chapter.
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), except when the error is a protection error.
To prevent that an occasional error stays in the list forever, the
error is removed from the list after 50+ operation hours.
When multiple errors occur (errors occurred within a short time
span), there is a high probability that there is some relation
between them.
5.5.2How to read the Error Buffer
Use one of the following methods:
•On screen via the SAM (only if you have a picture).
Examples:
– 0 0 0 0 0: No errors detected
– 6 0 0 0 0: Error code 6 is the last and only detected
error
– 9 6 0 0 0: Error code 6 was first detected and error code
9 is the last detected error
•Via the blinking LED procedure (when you have no
picture). See paragraph "The Blinking LED Procedure"
further on.
•Via ComPair.
5.5.3How 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”.
•When you transmit the commands “DIAGNOSE” - “99” “OK” with ComPair (DST-emulation feature).
•If the content of the error buffer has not changed for 50+
hours, it resets automatically.
SERVICE
CONNECTOR
PCVCRI2CPower
Figure 5-2 ComPair Interface connection
5.4.5How To Order
ComPair order codes:
•ComPair Software: ST4191.
•ComPair Interface Box: 4822 727 21631.
•AC Adapter: T405-ND.
•ComPair Quick Start Guide: ST4190.
Note: If you encounter any problems, contact your local
support desk.
5.5Error Codes
5.5.1Introduction
9V DC
L
R
AUDIO EXTERNAL 1
EXTERNAL 2
CL96532156_029.eps
190600
5.5.4Error Codes
In case of non-intermittent faults, clear the error buffer before
you begin the repair. This to ensure that old error codes are no
longer present. Before clearing the buffer, write down the
content, as this history can give you significant information.
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 various errors:
•I2C device errors.
•I2C bus errors.
•Protection errors.
•Errors not related to an I2C device, but of importance:
– FALCONIC (ERROR 26): at start-up, after initialization
of the PICNIC, the presence of the FALCONIC can be
checked.
– EAGLE (ERROR 27): at start-up, after initialization of
the PICNIC, the presence of the Eagle can be
checked.
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 has occurred, the error is added to the list of
errors, provided the list is not full or the error is a protection
error.
Note: Error codes 1, 6, or 18 are protection codes and in this
case, supplies of some circuits will be switched “OFF”. Also, in
protection, the LED will blink the number of times equivalent to
the most recent error code.
5.6The Blinking LED Procedure
5.6.1Introduction
Via this procedure, you can make the contents of the error
buffer visible via the front LED. This is especially useful for fault
finding, when there is no picture.
When the SDM is entered, the front LED will show (blink) the
contents of the error-buffer. Error-codes > 10 are shown as
follows:
– A long blink of 750 ms (which is an indication of the decimal
digit),
– A pause of 1.5 s,
– “n” short blinks (where “n” = 1 - 9),
– When all the error-codes are displayed, the sequence
finishes with a LED blink of 3 s,
– The sequence starts again.
Example: Error 12 9 6 0 0.
After activation of the SDM, the front LED will show:
– 1 long blink of 750 ms (which is an indication of the decimal
digit) followed by a pause of 1.5 s,
– 2 short blinks followed by a pause of 3 s,
– 9 short blinks followed by a pause of 3 s,
– 6 short blinks followed by a pause of 3 s,
– 1 long blink of 3 s to finish the sequence,
– The sequence starts again.
Note: If errors 1, 6, or 18 occur, the LED always gives the last
occurred error even if the set is NOT in service mode.
5.6.2How to Enter
Use one of the following methods:
•Enter the SDM (only via soldering pads marked “SDM” on
SSP). The blinking front LED will show the entire contents
of the error buffer (this works in “normal operation” mode
and in “protection” mode).
•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.
•“DIAGNOSE X” with the DST-emulation feature of
ComPair (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.... When x = 0 all errors are shown.
5.7Protections
5.7.1Introduction
This chassis has only one microprocessor (OTC), which
remains active during Standby. This because power of the
microprocessor and the attached memory chip set is coming
from the 3V3 supply, which is derived from the 5V Standbycircuitry. Therefore, in both Power-on as in Standby “power-off”
mode, the microprocessor is connected to this power supply.
If a fault situation is detected, an error code will be generated
and if necessary, the set is put in protection mode. The
protection mode is indicated by the blinking of the front LED at
a frequency of 3 Hz (or by a coded blinking in special cases).
The content of the error buffer can be read via the service menu
(SAM), the blinking LED procedure or via DST/ComPair.
To get a quick diagnosis, this chassis has three service-modes
implemented:
•The Customer Service Mode (CSM).
•The Service Default Mode (SDM). Start-up of the set in a
predefined way.
•The Service Alignment Mode (SAM). In this mode, items
of the set can be adjusted via a menu.
You can enter both SDM and SAM modes via the “service
pads” on the SSP, via an RC-transmitter, or via ComPair. It is
not possible to enter the SAM in “standby”; the TV has to be in
“normal operation” mode.
The “Protection Diagram” shows the structure of the protection
system. See diagram below.
EN 28FTL13U AA & AB5.
Service Modes, Error Codes, and Fault Finding
5.7.4Hardware Protection
TUNER
FAST I2C BUS BLOCKED
SLOW I2C BUS BLOCKED
EPLD
+
FBX
+
3D COMB (US)
DC_PROT (from audio)
+8V_CON
+5V_CON
DC/DC
PROTECTION
IRQ-DIGITAL (98)
+8V SENSE (105)
+5V SENSE (106)
I2C
Figure 5-3 Protection diagram.
There are several types of protections:
•I2C related protections.
•OTC related protections (via polling on I/O pins or via
algorithms).
•Hardware protection
All protections are explained below.
5.7.2I2C Related Protections
In normal operation, some registers of the I2C controlled ICs
are refreshed every 200 ms. During this sequence, the I2C
busses and the I2C ICs are checked.
An I2C protection will take place if the SDA and SCL lines are
short-circuited to ground, or to each other. An I2C error will also
occur, if the power supply of the IC is missing.
DC/DC protection
When a 3V3 supply is short-circuited the DC/DC converter
switches off and goes in protection. The FBX, EPLD IC, and
3D comb IC have no supply voltage and give no acknowledge.
In this case, the set should go into protection. An error code is
written in the NVM: DC/DC error.
FBX protection
The FBX protection is not available any more. It is replaced by
the DC/DC protection.
5.7.3OTC Related Protections
If a protection is detected at an OTC input, the OTC will start to
scan all protection inputs every 200 ms for 5 times. If the
protection on one of the inputs is still active after 1 s, the
microprocessor will put the set in the protection mode. Before
the scanning is started, a so-called “ESD refresh” is carried out.
This is done, because the interrupt on one of the inputs is
possibly caused either by a flash or by ESD. As a flash or ESD
can influence IC settings, the HIP, MSP, 3D Comb and wireless
module (not used in this set) are initialized again, to ensure the
normal picture and sound conditions of the set.
OTC
CL 36532053_065.eps
100703
Short-circuiting the 3V3 supply from the DC/DC converter will
shut down the DC/DC converter. The absence of the 3V3
supply line is also sensed via I2C (see description DC/DC
protection above), this is useful if there is something wrong in
the detection circuit of the DC/DC converter. There are no
hardware protections in this chassis, which switch off the
supply.
5.8Repair tips
5.8.13V3 Supply (DC/DC converter)
As mentioned above, the DC/DC converter is switched “off”
when something goes wrong (detection of a missing 3V3
supply at one of the devices supplied by the 3V3). Because of
this, the set goes to protection (I2C protection). Error code 55
is logged.
For further diagnoses, you need to overrule the I2C protection:
put the set in Service Default Mode by means of the solder
pads on the SSB.
The DC/DC converter is still not working because it is switched
“off” by the 3V3_FAULT line (schematic B12). Now you have
some possibilities:
1. First, measure the impedance over diode 6U06. In normal
conditions, you should measure approximately 120 ohm (if
possible, verify this with another set). If the impedance is
much too low, do not try to start up the converter as
mentioned below. Remind that if FET 7U03 is shortcircuited, this will also influence your measurement.
2. Desolder coils 5U05 and 5U06, connect an external 3V3
supply at capacitor 2U23 (current limitation to 500 mA) and
a second external 3V3 supply at capacitor 2U31 (current
limitation to 800 mA). The normal working current of the
3V3_SIM line is approximately 400 mA and the normal
working current for the 3V3_DCDCFBX line is
approximately 700 mA. Therefore, if one of the currents
exceeds their nominal value you can determine in which
circuit the overload is situated. If the set would start up and
you have normal picture, there is probably no overload but
a problem in the detection circuits.
3. If you do not have two external power supplies, you can do
the following: Desolder coils 5U02, 5U03, and 5U04 (you
must desolder all three, otherwise the circuit could be
damaged), connect an external power supply of 3V3 at the
cathode of diode 6U06. Make sure to limit the current of this
external supply to approximately 1200 mA. If the supplied
current exceeds 1100 mA (approximately normal working
current) you can conclude that one of the devices supplied
by 3V3 is short-circuited.
4. Another possibility is to force the converter to start up by
short-circuiting (and keep short-circuited) resistor 3U25
(B12).
Caution: Be aware that this can damage the set. Even if
you measure approximately 120 ohm over diode 6U06,
there can still be something wrong in the converter itself.
By short-circuiting resistor 3U25, the internal protection of
the converter is disabled.
8 V and 5 V protections
The microprocessor senses the presence of the 8 V and 5 V
(via the “+5V_CON” and “+8V_CON” lines). If one (or both) of
these voltages is (are) not present, an error code is stored in
the error buffer of the NVM, and the set is put in the protection
mode.
Audio DC protection
The OTC senses if the audio module is in protection via IRQDIGITAL (pin 98 of OTC). If this is the case, the OTC puts the
set in protection.
5.8.2ComPair
This chassis does not have an IR transmitting LED (as in MGsets). Therefore, a “Service” (ComPair) connector is
implemented at the bottom of the set, which is directly
accessible. In addition to this, there is also a blinking LED
procedure to show the contents of the error buffer.
When you use ComPair, you have the possibility to activate a
“stepwise start-up” mode. With this mode, you can initiate the
start-up sequence step by step. This also means that in certain
steps, some protections are not activated. This is sometimes
very convenient during repair.
Service Modes, Error Codes, and Fault Finding
EN 29FTL13U AA & AB5.
5.8.3Protections
Activating SDM via the “service pads” will overrule the
processor-controlled protections, but not the hardware
protections. This means, that the A/D-input protections (5 and
8 V) and the I2C “not-acknowledging” info of FBX + EPLD + 3D
Comb and of the tuner are overruled.
Caution: When doing this, the service technician must know
what he is doing, as it could lead to damaging the set.
Table 5-2 Repair tips
PhenomenonPossible CauseRepair tips
No picture, LED blinking at
3 Hz.
No picture, LED blinking
with code 6-6-6 or 18-18-
18.
No picture, LED blinking
with code 1-1-1.
No RC-reception. LED does
not echo RC-commands.
Picture is not synchronised. The sync is derived in the HIP. Check crystals in the HIP circuit on bad contacts.
Picture is distorted.Check video-path in Service
Picture with horizontal
stripes.
No menu, no OSD.Probably a defective uP.Measure test points B61to B64 on diagram B5A.
No NextView (EPG).IC7012 defective or not pow-
No Teletext.IC7007 defective or not pow-
Various symptoms, due to
missing local supply voltage.
For ITV (Institutional TV)
models, it is possible that
the service modes are not
functioning as expected.
Set is in protection due to various causes. For error codes
see error-code list.
No communication on slow I2Cor fast I2C-bus.
No communication on NVM-I2C
bus to the uP.
uP circuitry or RC-receiver is
defective.
Default Mode.
Pixel Plus processing is malfunctioning
ered.
ered.
An interrupted fuse, NFR-resistor or connection.
"Hotel Mode" option is set to
"ON". This can cause problems
with service modes.
5.8.4Power Supply
The simplest way to repair the power supply is to check (and
replace if necessary) the components that are marked gray on
schematic SP1.
5.8.5AUX Supply
First determine whether one or more of the secondary diodes
(6044, 6021, 6291, 6293) are short-circuited. If this is not the
case, check (and replace if necessary) the components that
are marked gray on schematic SA.
You have no picture, so:Read the error buffer via ComPair (error buffer is accessible when set is in protection, compare-file will guide you to this)- Read the
blinking LED information via standard remote command <mute>06250x<ok>.-
Or you read the error code sequence via standard remote command
<mute>062500<ok>. When you have found the error, check the circuitry related to the supply voltage and I2C-communication or the circuitry that triggers
the protection.
As processor cannot communicate with one of the 2 busses it the standby-led
spontaneously starts blinking 6-6-6-etc or 18-18-18-etc... If in the error buffer
somewhere is an error 6 or 18, these will have the highest priority starting the
mentioned blinking. Measure dependent of the error on the I2C-bus which device is loading the bus. (Use I2C-overview)
As the uP cannot communicate with the NVM I2C bus, it spontaneously starts
blinking 1-1-1.
Note: when there is no access to the NVM, a lot of picture setting can go
wrong.
In case the set does react on a local keyboard operation, you must check the
RC-receiver circuitry (diagram LD).
Investigate whether there is an error code present in the error buffer. In case
there is one, check the I2C-bus and/or supply lines (see overview supply
lines).Measure and check signal path Tuner-HIP-FBX-EPLD.
Check functionality on circuitry (B3a, B3b, and B3c) of PICNIC (7713), FALCONIC (7718, EAGLE (7724) and/or field memories (7714, 7717, 7719, 7722
and 7723.Tip: the whole Pixel Plus chipset (3 ICs + 5 Field Memories) can be
diagnosed via ComPair.
Check circuitry around IC7012 on diagram B5A.
Check circuitry around IC7007 on diagram B5A. Check also B61 to B64
around uP on diagram B5A.
When no symptom or error code leads you to a specific circuitry, use the supply lines overview (see supply lines overview), for a quick scan of all supply
lines.
Switch "OFF" the "Hotel Mode" option, in "Service Alignment Mode", "Service
Options", "Miscellaneous", "Hotel Mode". After repair this option should be
switched on again to use Hotel Mode functionality.
5.9Software Downloading
In this chassis, you can upgrade the software via ComPair
without removing the back cover of the set. The switch, which
is needed for the software downloading procedure, can be
reached through the cooling gaps of the back cover. The switch
is located next to the SAM/SDM pads and can be operated with
a long and thin screwdriver. Make sure that you do not damage
the PWB with sharp objects. You can find more information on
how this procedure works in the ComPair file. It is possible that
not all sets are equipped with the hardware, needed to make
software upgrading possible. To speed up the programming
process the firmware of the ComPair interface can be
upgraded. See paragraph “How To Order” for the order number
EN 30FTL13U AA & AB5.
Personal Notes:
Service Modes, Error Codes, and Fault Finding
E_06532_012.eps
131004
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