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SPMS Page 1 of 4
Safety Instructions, Warnings, and Notes
Safety Instructions
Safety regulations require that during a repair:
Connect the set to the AC Power via an isolation transformer (> 800 VA).
Replace safety components, indicated by the symbol , 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 AC Power lead for external damage.
Check the strain relief of the AC Power cord for proper function.
Check the electrical DC resistance between the AC Power plug and the secondary side (only for sets
which have a AC Power isolated power supply):
1. Unplug the AC Power cord and connect a wire between the two pins of the AC Power plug.
2. Set the AC Power switch to the 'on' position (keep the AC Power cord unplugged!).
3. Measure the resistance value between the pins of the 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 AC Power plug.
Check the cabinet for defects, to avoid touching of any inner parts by the customer.
Warnings
All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD ).
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.
Notes
General
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Measure the voltages and waveforms with regard to the chassis (= tuner) ground ( ), or hot
ground ( ), 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 color 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 ( ) and without ( ) aerial
signal. Measure the voltages in the power supply section both in normal operation ( ) and in
standby ( ). 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" and the "double-D symbol", are
trademarks of Dolby Laboratories.
Schematic 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 ( = x10-6), nano-farads (n= x10-9), or pico-farads
(p= x10-12).
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 Electrical Replacement Parts List. Therefore, always
check this list when there is any doubt.
Rework 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
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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.
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.
Lead Free Solder
Some PWBs in this chassis are "lead-free prepared". This is indicated on the PWB by the PHILIPS lead-
free logo (either by a service-printing or by a sticker).color
Figure: Lead-free logo
Due to this fact, 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.
Use only adequate solder tools applicable for lead-free soldering tin.
Adjust your solder tool so that a temperature around 217 - 220 deg. C is reached at the solder joint.
Do not mix lead-free soldering tin with leaded soldering tin; this will lead to unreliable solder
joints!
Use only original spare parts listed in this manual. These are lead-free parts!
On the website www.atyourservice.ce.philips.com (needs subscription, not available for all regions)
you can find more information on:
Aspects of lead-free technology.
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BGA (de-)soldering, heating-profiles of BGAs used in Philips sets, and others.
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 - 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.
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Circuit Descriptions, Abbreviation List, and IC
Data Sheets
Index of this chapter
1. Introduction
2. Block Diagram
3. Power Supply (SDI plasma panel)
4. Input/Output
5. Tuner and IF
6. Video: TV Part
7. Video: Scaler Part
8. Audio Processing
9. Control
10. Abbreviation List
11. IC Data Sheets
Note:
Only new (not recently published) circuits are described here. For the other circuit descriptions, see
a.o. the A02, FTL13, and FTL2.1 Service Manuals.
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 and
circuit diagrams. Where necessary, you will find a separate drawing for clarification.
Introduction
The LC4.x is a global chassis for the year 2004. Its architecture is based upon the LC03 chassis (LC4.6 is
LCD, LC4.7 is PDP).
This chassis has the following (new) features:
Audio : The sound processor is part of the UOC processor (called "Hercules").
Video : Enhanced video features, video drivers, Active Control and multiple PIP.
The functions for video/audio processing, microprocessor (uP), and CC/Teletext (TXT) decoder are all
combined in one IC (TDA120xx, item 7011), the so-called third generation Ultimate One Chip (UOC-III)
or "Hercules". This chip has the following features:
Control, small signal, mono/stereo, and extensive Audio/Video switching in one IC.
Upgrade with digital sound & video processing.
Alignment free IF.
FM sound, no traps/bandpass filters.
Full multi-standard color decoder.
One Xtal reference for all functions (microprocessor, RCP, TXT/CC, RDS, color decoder, and
stereo sound processor).
Block Diagram
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Figure: Block Diagram
The PLL tuner delivers the IF-signal, via audio & video SAW-filters, to the Video Signal Processor with
FLASH embedded TEXT/Control/Graphics m-Controller (TCG m-Controller) and US Closed Caption
decoder. TDA120x1 (item 7011, also called Hercules). This IC has the following functions:
Analogue Video Processing.
Sound Demodulation.
Audio Interfaces and switching.
Volume and tone control for loudspeakers.
Reflection and delay for loudspeaker channels.
Micro Controller.
Data Capture.
Display.
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The Hercules has one input for the internal CVBS signal and a video switch with 3 external CVBS inputs
and a CVBS output. All CVBS inputs can be used as Y-input for Y/C signals. However, only 2 Y/C
sources can be selected because the circuit has 2 chroma inputs. It is possible to add an additional CVBS
(Y)/C input (CVBS/YX and CX) when the YUV interface and the RGB/YPRPB input are not needed. The
I/O is divided over two parts: Rear I/O and Side I/O. The rear has two SCART inputs and a PC (VGA)
input. The side has a CVBS and Y/C (SVHS) input.
The video part delivers the RGB signals to the Scaler IC.
The Genesis GM1501 Malibu Scaler IC can receive different video input signals: SDTV (from Hercules)
or PC (VGA) (from external computer).
After the video processing, the digital data is send via a Low Voltage Differential Signalling bus to the
display panel. LVDS is used to improve data speed and to reduce EMI significantly.
There are two I2C lines and two interrupt and communication lines (TV_IRQ and TV_SC_COM) for the
Scaler control. The Scaler communicates with the Hercules as a slave device. To avoid buffer overflow at
the Scaler side, the TV_SC_COM line provides the necessary hardware flow control. To allow bi-
directional communication, the Scaler can initiate a service interrupt-request to the Hercules via the
TV_IRQ line.
The Hercules, and EEPROM are supplied with 3.3 V, which is also present during STANDBY.
The EEPROMs, or NVMs (Non Volatile Memory) are used to store the settings.
The sound part is built up around the Hercules. The Source Selection, Decoding and Processing are all
done by the Hercules.
Power supply input are several DC voltages coming from a supply panel.
Power Supply (SDI plasma panel)
See the FTP1.1 manual for a more detailed description.
Start-up sequence
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Figure: Start-up sequence SDI plasma panel
Input/Output
The I/O is divided over two parts: Rear I/O and Side I/O. The rear has two SCART inputs, a PC (VGA)
input, and an Audio input. The side has a CVBS and Y/C (SVHS) input.
EXT1 : The input of SCART1 is CVBS + RGB + L/R and the output is the video (+ sound) signal from
the tuner (SC1_CVBS_RF_OUT).
EXT2 : The input of SCART2 is Y/C + CVBS + L/R. The output signal is CVBS_SC2_MON_OUT (+
sound).
SCART2 is meant for VCR and has therefore some additional signals in relation to EXT1 but no RGB: it
has the possibility for Y/C_in: Y_in on pin 20 and Chroma_in on pin 15.
The selection of the external I/Os is controlled by the Hercules.
PC (VGA) in: This input is directly going to the Scaler IC. See paragraph "Video: Scaler Part".
Tuner and IF
A Philips UV13xx Tuner is used in the TV board. The SIF signals are decoded by the Hercules. Tuning is
done via I2C.
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Video IF amplifier
The IF-filter is integrated in a SAW (Surface Acoustic Wave) filter. One for filtering IF-video (1328) and
one for IF-audio (1330). The type of these filters is depending of the standard(s) that has to be received.
The output of the tuner is controlled via an IF-amplifier with AGC-control. This is a voltage feedback
from pin 31 of the Hercules to pin 1 of the tuner. The AGC-detector operates on top sync and top white
level. AGC take-over point is adjusted via the service alignment mode 'Tuner" - "AGC'. If there is too
much noise in the picture, then it could be that the AGC setting is wrong. The AGC-setting could also be
mis-aligned if the picture deforms with perfect signal; the IF-amplifier amplifies too much.
Video: TV Part (diagrams A1, A2, and A3)
The video processing is completely handled by the Hercules
IF demodulator.
Chrominance decoder
Sync separator.
Horizontal & vertical drive.
RGB processing.
CVBS and SVHS source select.
It has also build in features like:
CTI.
Black stretch.
Blue stretch.
White stretch.
Slow start up.
Dynamic skin tone correction etc.
Further, it also incorporates sound IF traps and filters, and requires only one crystal for all systems.
Histogram (YUV picture improvement) IC
The demodulated video-signal can be checked on pins 74, 75, and 76 of IC7011 and is fed to pins 70, 71,
and 72. In this path, the Histogram IC TDA9171 is inserted.
This TDA9178 can control various picture improvements:
Histogram processing.
Color transient improvement.
Luminance transient improvement.
Black and white stretch.
Skin tone correction.
Green enhancement.
Blue stretch.
Smart peaking.
Video dependent coring.
Color dependent stretching.
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Since the TDA9171 is connected to the Hercules, picture improvement works only for signals that are
routed through the Hercules and not for signals directly connected to the Scaler.
Video: Scaler Part (diagram A7 and A13)
The Genesis GM1501 Scaler is a dual channel graphics and video processing IC for flat monitors and
televisions incorporating Picture in Picture, up to SXGA output resolutions. The Scaler controls the
display processing in a FTV, e.g. like the deflection circuit in a CRT-based TV. It controls all the view
modes (e.g. like 'zooming' and 'shifting'). Features like PC (VGA) or HD inputs, are also handled by this
part.
Features
The Scaler provides several key IC functions:
Scaling.
Auto-configuration/ Auto-Detection.
Various Input Ports:
Analog RGB.
Video Graphics.
Integrated LVDS Transmitter.
On-chip Micro-controller
Inputs
Analog RGB
The RGB input is fed to pins B2, C2 and D2. This input consists of either the Hercules RGB output or the
RGB/YpbPr input of the VGA connector. The Scaler can switch between the two signals via the
PC_HD_SEL signal and selection IC SM5301.
PC (VGA) input
The VGA input is processed by the VGA block of the Scaler. The Scaler supports pixel frequencies up to
165MHz.
YpbPr format is also supported via the VGA interface and covers resolutions of 480p/560p/720p/1080i.
Output
The Display Output Port provides data and control signals that permit the Scaler to connect to a variety of
display devices using a TTL or LVDS interface. The output interface is configurable for single or dual
wide TTL/LVDS in 18, 24 or 30-bit RGB pixels format. All display data and timing signals are
synchronous with the DCLK output clock. The integrated LVDS transmitter is programmable to allow the
data and control signals to be mapped into any sequence depending on the specified receiver format.
Audio Processing
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Figure: Block diagram audio processing
The audio decoding is done entirely via the Hercules. The IF output from the Tuner is fed directly to either
the Video-IF or the Sound-IF input depending on the type of concept chosen. There are mainly two types
of decoder in the Hercules, an analogue decoder that decodes only Mono, regardless of any standards, and
a digital decoder (or DEMDEC) that can decode both Mono and Stereo, again regardless of any standards.
In this chassis, the analogue decoder is used in two cases:
It is used for AM Sound demodulation in the Europe SECAM LL' transmission.
It is used for all FM demodulation in AV-Stereo sets.
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Diversity
The diversity for the Audio decoding can be broken up into two main concepts:
The Quasi Split Sound concept used in Europe and some AP sets.
The Inter Carrier concept, used in NAFTA and LATAM.
The UOC-III family makes no difference any more between QSS- and Intercarrier IF, nearly all types are
software-switchable between the two SAW-filter constructions.
Simple data settings are required for the set to determine whether it is using the Inter Carrier or the QSS
concept. These settings are done via the "QSS" and "FMI" bit found in SAM mode. Due to the diversity
involved, the data for the 2 bits are being placed in the NVM location and it is required to write once
during start-up.
On top of that, it can be further broken down into various systems depending on the region. The systems
or region chosen, will in turn affect the type of sound standard that is/are allowed to be decoded.
For Europe, the standard consists of BG/DK/I/LL' for a Multi-System set. There are also versions
for Eastern Europe and Western Europe and the standard for decoding will be BG/DK and I/DK
respectively.
For NAFTA and LATAM, there is only one transmission standard, which is the M standard. The
diversity then will be based on whether it has a dBx noise reduction or a Non-dBx (no dBx noise
reduction).
For AP, the standard consists of BG/DK/I/M for a Multi-System set. The diversity here will depend
on the region. AP China can have a Multi-System and I/DK version. For India, it might only be BG
standard.
Functionality
The features available in the Hercules are as follows:
Treble and Bass Control.
Surround Sound Effect that includes:
Incredible Stereo.
Incredible Mono.
3D Sound (not for AV Stereo).
TruSurround (not for AV Stereo).
Virtual Dolby Surround, VDS422 (not for AV Stereo).
Virtual Dolby Surround, VDS423 (not for AV Stereo).
Dolby Pro-Logic (not for AV Stereo).
Bass Feature that includes:
Dynamic Ultra-Bass.
Dynamic Bass Enhancement.
BBE (not for AV Stereo).
Auto-Volume Leveller.
5 Band Equalizer.
Loudness Control.
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All the features stated are available for the Full Stereo versions and limited features for the AV Stereo
Audio Amplifier Panel (diagram SA3)
Introduction
This panel contains the audio filters and amplifiers necessary for driving the speakers.
The audio inputs come from the SSB (via connector 1739).
The PSU delivers the positive and negative supply voltage of 16 VDC.
After being filtered and amplified, the signals go to the speaker section, where the full range speakers are
driven (load impedance is 8 ohm).
Amplifier
The amplifier is an integrated class-D amplifier (TDA7490). It combines a good performance with a high
efficiency, resulting in a big reduction in heat generation.
Principle
Audio-power-amplifier systems have traditionally used linear amplifiers, which are well known for being
inefficient. In fact, a linear Class AB amplifier is designed to act as a variable resistor network between
the power supply and the load. The transistors operate in their linear region, and the voltage that is
dropped across the transistors (in their role as variable resistors) is lost as heat, particularly in the output
transistors.
Class D amplifiers were developed as a way to increase the efficiency of audio-power-amplifier systems.
The Class D amplifier works by varying the duty cycle of a Pulse Width Modulated (PWM) signal.
By comparing the input voltage to a triangle wave, the amplifier increases duty cycle to increase output
voltage, and decreases duty cycle to decrease output voltage.
The output transistors of a Class D amplifier switch from 'full off' to 'full on' (saturated) and then back
again, spending very little time in the linear region in between. Therefore, very little power is lost to heat.
If the transistors have a low 'on' resistance (RDS(ON)), little voltage is dropped across them, further
reducing losses.
A Low Pass Filter at the output passes only the average of the output wave, which is an amplified version
of the input signal.
In order to keep the distortion low, negative feedback is applied (via R3723/3708).
The advantage of Class D is increased efficiency (= less heat dissipation). Class D amplifiers can drive
the same output power as a Class AB amplifier using less supply current.
The disadvantag e is the large output filter that drives up cost and size. The main reason for this filter is
that the switching waveform results in maximum current flow. This causes more loss in the load, which
causes lower efficiency. An LC filter with a cut-off frequency less than the Class D switching frequency,
allows the switching current to flow through the filter instead of the load. The filter is less lossy than the
speaker, which causes less power dissipated at high output power and increases efficiency in most cases.
Mute
A mute switch (item 7701) is provided at pin 6. This switch is controlled by the SOUND_ENABLE line
from the Hercules (mute during operation).
Protections
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Because of the symmetrical supply, a DC-blocking capacitor, between the amplifier and the speaker, is not
necessary. However, it is still necessary to protect the speaker for DC voltages. Therefore, the following
protections are therefore implemented:
Via R3765 and R3767, each stabilised supply voltage line is checked on deviations.
Via R3718 and 3717, each amplifier output is checked for DC-voltage.
Control
Hercules
The System Board has two main micro-controllers on board. These are:
On-chip x86 micro-controller (OCM) from Genesis LCD TV/Monitor Controller.
On-chip 80C51 micro-controller from Philips Semiconductors UOCIII (Hercules) series.
Each micro-controller has it own I2C bus which host its own internal devices.
The Hercules is integrated with the Video and Audio Processor. For dynamic data storage, such as
SMART PICTURE and SMART SOUND settings, an external NVM IC is being used.
Another feature includes an optional Teletext/Closed Caption decoder with the possibility of different
page storage depending on the Hercules type number.
The Micro Controller ranges in ROM from 128 kB with no TXT-decoder to 128 kB with a 10 page
Teletext or with Closed Caption.
Block Diagram
The block diagram of the Micro Controller application is shown below.
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Figure: Micro Controller block diagram
Basic Specification
The Micro Controller operates at the following supply voltages:
+3.3 VDC at pins 4, 88, 94, and 109.
+1.8 VDC at pins 93, 96, and 117.
I2C pull up supply: +3.3 VDC.
Pin Configuration and Functionality
The ports of the Micro Controller can be configured as follows:
A normal input port.
An input ADC port.
An output Open Drain port.
An output Push-Pull port.
An output PWM port.
Input/Output Port
The following table shows the ports used for the L04 control:
Table: Micro Controller ports overview
Pin Name Description Configuration
97 INT0/ P0.5 IR INT0
98 P1.0/ INT1 TV_IRQ INT2
99 P1.1/ T0 TV_SC_COM P1.1
102 P0.4/ I2SWS EXT_MUTE P0.4
103 P0.3/ I2SCLK Lip Sync I2SCLK
104 P0.2/ I2SDO2 NVM_WP P0.2
105 P0.1/ I2SDO1 Lip Sync I2SDO1
106 P0.0/ I2SDI/O Lip Sync I2SDI/O
107 P1.3/ T1 PC-TV_LED P1.3
108 P1.6/ SCL SCL SCL
109 P1.7/ SDA SDA SDA
111 P2.0/ TPWM SOUND_ENABLE P2.0
112 P2.1/ PWM0 (for future use) -
113 P2.2/ PWM1 (for future use) -
114 P2.3/ PWM2 SEL_IF P2.3
115 P3.0/ ADC0 Light Sensor - SDM ADC0
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116 P3.1/ ADC1 STATUS_1 ADC1
119 P3.2/ ADC2 STATUS_2 ADC2
120 P3.3/ ADC3 KEYBOARD ADC3
122 P2.4/ PWM3 STANDBY P2.4
123 P2.5/ PWM4 (for future use) -
126 P1.2/ INT2 (for future use) -
127 P1.4/ RX HERC_RESET -
128 P1.5/ TX POWER_DOWN P1.5
The description of each functional pin is explained below:
LED. This signal is used to drive the LED for Stand-by, Remote, and Error Indication:
During protection mode, the LED blinks and the set is in Stand-by mode.
During error conditions it blinks at a predefined rate.
After receiving a valid RC or local keyboard command it flashes once.
For sets with error message indication, the LED blinks when message is active and the set is
in Stand-by mode.
SCL. This is the clock wire of the two-wire single master bi-directional I2C bus.
SDA. This is the data wire of the two-wire single master bi-directional I2C bus.
STANDBY. The Hercules generates this signal. This can enable the power supply in normal
operation and disable it during Stand-by. It is of logic "high" (3.3 V) under normal operation and
"low" (0 V) during Stand-by.
IR. This input pin is connected to an RC5 remote control receiver.
SEL-IF. This is an output pin to switch the Video SAW filter between M system and other systems.
0: NTSC M (default).
1: PAL B/G, DK, I, L.
NVM_WP. The global protection line is used to enable and disable write protection to the NVM.
When write to the NVM is required, pin 7 of the NVM must be pulled to logic "0' first (via
Write_Protect of the micro-controller pin) before a write is performed. Otherwise pin 7 of NVM
must always be at logic "1"
0: Disabled.
1: Enabled (default).
SOUND_ENABLE. This pin is use to MUTE the audio amplifier. It is configured as push pull.
STATUS_1. This signal is used to read the status of the SCART 1 input (EU only).
STATUS_2. This signal is used to read the status of the SCART 2 input (EU only).
HERC_RESET. This pin is use to switch the +1.8 V supply.
POWER_DOWN. The power supply generates this signal. Logic "high" (3.3 V) under normal
operation of the TV and goes "low" (0 V) when the AC Power input voltage supply goes below 70
VAC.
KEYBOARD. Following are the Keyboard functions and the step values (8 bit) for it.
Table: Local keyboard values
Function Voltage (VDC) Step values (8 bit)
P+ / Ch+ 0.43 7 - 33
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P- / Ch- 0.93 54 - 73
Menu (Vol - and Vol +) 1.19 74 - 96
Vol - 1.49 97 - 121
Vol + 2.12 148 - 169
TV_IRQ. This signal is the interrupt from the Scaler IC.
TV_SC_COM. This signal is used for the communication with the Scaler IC.
EXT_MUTE. This signal is used to reduce the switch "off" plop.
Abbreviation List
Abbreviation Description
1080i 1080 visible lines, interlaced
1080p 1080 visible lines, progressive scan
2CS 2 Carrier Sound
2DNR Spatial (2D) Noise Reduction
3DNR Temporal (3D) Noise Reduction
480i 480 visible lines, interlaced
480p 480 visible lines, progressive scan
AARA Automatic Aspect Ratio Adaptation: algorithm that adapts aspect
ratio to remove horizontal black bars; keeping up the original
aspect ratio
ACI Automatic Channel Installation: algorithm that installs TV
channels directly from a cable network by means of a predefined
TXT page
ADC Analogue to Digital Converter
AFC Automatic Frequency Control: control signal used to tune to the
correct frequency
AGC Automatic Gain Control: algorithm that controls the video input of
the feature box
AM Amplitude Modulation
AUO Acer Unipack Optronics
AP Asia Pacific
AR Aspect Ratio: 4 by 3 or 16 by 9
ASD Automatic Standard Detection
AV Audio Video
B-SC1-IN Blue SCART1 in
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B-SC2-IN Blue SCART2 in
B-TXT Blue teletext
B/G Monochrome TV system. Sound carrier distance is 5.5 MHz
BTSC Broadcast Television System Committee
C-FRONT Chrominance front input
CBA Circuit Board Assembly (or PWB)
CL Constant Level: audio output to connect with an external amplifier
CLUT Color Look Up Table
ComPair Computer aided rePair
CSM Customer Service Mode
CVBS Composite Video Blanking and Synchronisation
CVBS-EXT CVBS signal from external source (VCR, VCD, etc.)
CVBS-INT CVBS signal from Tuner
CVBS-MON CVBS monitor signal
CVBS-TER-OUT CVBS terrestrial out
DAC Digital to Analogue Converter
DBE Dynamic Bass Enhancement: extra low frequency amplification
DFU Directions For Use: owner's manual
DNR Dynamic Noise Reduction
DRAM Dynamic RAM
DSP Digital Signal Processing
DST Dealer Service Tool: special (European) remote control designed
for service technicians
DTS Digital Theatre Sound
DVD Digital Versatile Disc
DVI Digital Visual Interface
DW Double Window
ED Enhanced Definition: 480p, 576p
EEPROM Electrically Erasable and Programmable Read Only Memory
EU EUrope
EXT EXTernal (source), entering the set by SCART or by cinches
(jacks)
FBL Fast Blanking: DC signal accompanying RGB signals
FBL-SC1-IN Fast blanking signal for SCART1 in
FBL-SC2-IN Fast blanking signal for SCART2 in
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FBL-TXT Fast Blanking Teletext
FLASH FLASH memory
FM Field Memory / Frequency Modulation
FMR FM Radio
FRC Frame Rate Converter
FRONT-C Front input chrominance (SVHS)
FRONT-DETECT Front input detection
FRONT-Y_CVBS Front input luminance or CVBS (SVHS)
FTV Flat TeleVision
G-SC1-IN Green SCART1 in
G-SC2-IN Green SCART2 in
G-TXT Green teletext
H H_sync to the module
HD High Definition: 720p, 1080i, 1080p
HDMI High Definition Multimedia Interface, digital audio and video
interface
HP Head Phone
I Monochrome TV system. Sound carrier distance is 6.0 MHz
I2C Integrated IC bus
I2S Integrated IC Sound bus
IC Integrated Circuit
IF Intermediate Frequency
Interlaced Scan mode where two fields are used to form one frame. Each field
contains half the number of the total amount of lines. The fields are
written in 'pairs', causing line flicker.
IR Infra Red
IRQ Interrupt ReQuest
Last 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 the customers wishes
LATAM LATin AMerica
LC04 Philips chassis name for LCD TV 2004 project
LCD Liquid Crystal Display
LED Light 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
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SPMS Page 17 of 25
LPL LG Philips LCD
LS Loud Speaker
LVDS Low Voltage Differential Signalling, data transmission system for
high speed and low EMI communication.
M/N Monochrome TV system. Sound carrier distance is 4.5 MHz
MOSFET Metal Oxide Semiconductor Field Effect Transistor
MPEG Motion Pictures Experts Group
MSP Multi-standard Sound Processor: ITT sound decoder
MUTE MUTE Line
NAFTA North American Free Trade Association: Trade agreement between
Canada, USA and Mexico
NC Not Connected
NICAM Near Instantaneous Compounded Audio Multiplexing. This is a
digital sound system, used mainly in Europe.
NTSC National Television Standard Committee. Color system used
mainly 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)
NVM Non Volatile Memory: IC containing TV related data (for example,
options)
O/C Open Circuit
ON/OFF LED On/Off control signal for the LED
OSD On Screen Display
PAL Phase Alternating Line. Color system used mainly in Western
Europe (color carrier = 4.433619 MHz) and South America (color
carrier PAL M = 3.575612 MHz and PAL N = 3.582056 MHz)
PC Personal Computer
PCB Printed Circuit Board (or PWB)
PDP Plasma Display Panel
PIG Picture In Graphic
PIP Picture In Picture
PLL Phase Locked Loop. Used, for example, in FST tuning systems.
The customer can directly provide the desired frequency
Progressive Scan Scan mode where all scan lines are displayed in one frame at the
same time, creating a double vertical resolution.
PWB Printed Wiring Board (or PCB)
RAM Random Access Memory
RC Remote Control transmitter
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SPMS Page 18 of 25
RC5 (6) Remote Control system 5 (6), the signal from the remote control
receiver
RGB Red, Green, and Blue. The primary color signals for TV. By
mixing levels of R, G, and B, all colors (Y/C) are reproduced.
RGBHV Red, Green, Blue, Horizontal sync, and Vertical sync
ROM Read Only Memory
SAM Service Alignment Mode
SC SandCastle: two-level pulse derived from sync signals
SC1-OUT SCART output of the MSP audio IC
SC2-B-IN SCART2 Blue in
SC2-C-IN SCART2 chrominance in
SC2-OUT SCART output of the MSP audio IC
S/C Short Circuit
SCL Clock signal on I2C bus
SD Standard Definition: 480i, 576i
SDA Data signal on I2C bus
SDI Samsung Display Industry
SDM Service Default Mode
SDRAM Synchronous DRAM
SECAM SEquence Couleur Avec Memoire. Color system used mainly in
France and Eastern Europe. Color carriers = 4.406250 MHz and
4.250000 MHz
SIF Sound Intermediate Frequency
SMPS Switch Mode Power Supply
SND SouND
SNDL-SC1-IN Sound left SCART1 in
SNDL-SC1-OUT Sound left SCART1 out
SNDL-SC2-IN Sound left SCART2 in
SNDL-SC2-OUT Sound left SCART2 out
SNDR-SC1-IN Sound right SCART1 in
SNDR-SC1-OUT Sound right SCART1 out
SNDR-SC2-IN Sound right SCART2 out
SNDR-SC2-OUT Sound right SCART2 out
SNDS-VL-OUT Surround sound left variable level out
SNDS-VR-OUT Surround sound right variable level out
SOPS
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SPMS Page 19 of 25
Self Oscillating Power Supply
S/PDIF Sony Philips Digital InterFace
SRAM Static RAM
STBY Stand-by
SVHS Super Video Home System
SW Sub Woofer / Soft Ware
THD Total Harmonic Distortion
TXT TeleteXT
uP Microprocessor
VL Variable Level out: processed audio output toward external
amplifier
VCR Video Cassette Recorder
VGA Video Graphics Array
WD Watch Dog
WYSIWYR What You See Is What You Record: record selection that follows
main picture and sound
XTAL Quartz crystal
YPbPr Component video (Y= Luminance, Pb/Pr= Color difference signals
B-Y and R-Y, other amplitudes w.r.t. to YUV)
Y/C Video related signals: Y consists of luminance signal, blanking
level and sync; C consists of color signal.
Y-OUT Luminance-signal
YUV Baseband component video (Y= Luminance, U/V= Color
difference signals)
IC Data Sheets
This section shows the internal block diagrams and pin layouts of ICs that are drawn as 'black boxes' in
the electrical diagrams (with the exception of 'memory' and 'logic' ICs).
Diagram A2, Type TDA12029H (IC7011)
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11/19/2005
SPMS Page 21 of 25
Figure: Internal Block Diagram and Pin Configuration
Diagram A7, Type GM1501 (IC7401)
11/19/2005
SPMS Page 22 of 25
11/19/2005
SPMS Page 23 of 25
Figure: Internal Block Diagram and Pin Configuration
Diagram A12, Type SiI9993CT (IC7808)
11/19/2005
SPMS Page 24 of 25
11/19/2005
SPMS Page 25 of 25
Figure: Internal Block Diagram and Pin Configuration
11/19/2005
2 ';';
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42PF9936D/37(7676) Page: 1
F302 F303 F306 I357
I354 I904 F405 F613
F615 F624 F625 F626
F631 A56 A57 A58
A59
42PF9936D/37(7676) - Chassis Overview Page: 1 of 44
42PF9936D/37(7676) - Wiring Diagram Page: 2 of 44
42PF9936D/37(7676) - Block Diagram Audio and Video Page: 3 of 44
42PF9936D/37(7676) - Block Diagram Audio and Video Page: 4 of 44
42PF9936D/37(7676) - I2C IC Overview Page: 5 of 44
42PF9936D/37(7676) - Supply Voltage Overview Page: 6 of 44
42PF9936D/37(7676) - Tuner and VIF[A1] Page: 7 of 44
42PF9936D/37(7676) - Histogram and Hercules [A2] Page: 8 of 44
42PF9936D/37(7676) - Histogram and Hercules [A3] Page: 9 of 44
42PF9936D/37(7676) - Audio Delay line (Lipsync) [A4] Page: 10 of 44
42PF9936D/37(7676) - Audio Amplifier [A5] Page: 11 of 44
42PF9936D/37(7676) - TV Supply [A6] Page: 12 of 44
42PF9936D/37(7676) - Scaler [A7] Page: 13 of 44
42PF9936D/37(7676) - Scaler Supply [A8] Page: 14 of 44
42PF9936D/37(7676) - Scaler Interface [A9] Page: 15 of 44
42PF9936D/37(7676) - SDRAM [A10] Page: 16 of 44
42PF9936D/37(7676) - Flash / Control [A11] Page: 17 of 44
42PF9936D/37(7676) - HDMI [A12] Page: 18 of 44
42PF9936D/37(7676) - PCHD MUX [A13] Page: 19 of 44
42PF9936D/37(7676) - Supply [A14] Page: 20 of 44
42PF9936D/37(7676) - DC-DC Converter [A15] Page: 21 of 44
42PF9936D/37(7676) - PCHD IO [A16] Page: 22 of 44
42PF9936D/37(7676) - Cinch IO [A17] Page: 23 of 44
42PF9936D/37(7676) - 3D Comb Filter [CB] Page: 24 of 44
42PF9936D/37(7676) - PDP Audio Panel [C] Page: 25 of 44
42PF9936D/37(7676) - Side I/O Panel [D] Page: 26 of 44
42PF9936D/37(7676) - Top Control Panel [E] Page: 27 of 44
42PF9936D/37(7676) - EMC Filter Panel [EMC] Page: 28 of 44
42PF9936D/37(7676) - LED and Switch Panel [J] Page: 29 of 44
42PF9936D/37(7676) - Small Signal Panel (Top Side) Page: 30 of 44
42PF9936D/37(7676) - Small Signal Panel (Bottom Side) Page: 31 of 44
42PF9936D/37(7676) - 3D Comb Filter (Top Side) Page: 32 of 44
42PF9936D/37(7676) - 3D Comb Filter (Bottom Side) Page: 33 of 44
42PF9936D/37(7676) - Layout PDP Audio Panel (Top Side) Page: 34 of 44
42PF9936D/37(7676) - Layout PDP Audio Panel (Bottom Side) Page: 35 of 44
42PF9936D/37(7676) - Side I/O Panel (Top Side) Page: 36 of 44
42PF9936D/37(7676) - Side I/O Panel (Bottom Side) Page: 37 of 44
42PF9936D/37(7676) - Top Control Panel (Top Side) Page: 38 of 44
42PF9936D/37(7676) - Top Control Panel (Bottom Side) Page: 39 of 44
42PF9936D/37(7676) - Layout EMC Filter Panel (Top Side) Page: 40 of 44
42PF9936D/37(7676) - Layout EMC Filter Panel (Bottom Side) Page: 41 of 44
42PF9936D/37(7676) - LED and Switch Panel (Top Side) Page: 42 of 44
42PF9936D/37(7676) - LED and Switch Panel (Bottom Side) Page: 43 of 44
42PF9936D/37(7676) - Testpoint Overview SSB (Top Side) Page: 44 of 44
SPMS Page 1 of 14
Service Modes, Error Codes, and Fault Finding
Index of this chapter:
1. Test Points
2. Service Modes
3. Problems and Solving Tips (related to CSM)
4. ComPair
5. Error Codes
6. The Blinking LED Procedure
7. Fault Finding and Repair Tips
Test Points
This chassis is equipped with test points in the service printing. In the schematics test points are identified
with a rectangle box around Fxxx or Ixxx. These test points are specifically mentioned in the service
manual as "half moons" with a dot in the centre.
Perform measurements under the following conditions:
Television set in Service Default Alignment Mode.
Video input: Color bar signal.
Audio input: 3 kHz left channel, 1 kHz right channel.
Service Modes
Service Default mode (SDM) and Service Alignment Mode (SAM) offers several features for the service
technician, while the Customer Service Mode (CSM) is used for communication between the call centre
and the customer.
This chassis also offers the option of using ComPair, a hardware interface between a computer and the TV
chassis. It offers the abilities of structured troubleshooting, error code reading, and software version read-
out for all chassis.
Minimum requirements for ComPair: a Pentium processor, a Windows OS, and a CD-ROM drive (see
also paragraph 'ComPair').
Service Default Mode (SDM)
Purpose
To create a predefined setting for measurements to be made.
To override software protections.
To start the blinking LED procedure.
To inspect the error buffer.
To check the life timer.
Specifications
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Tuning frequency: 61.25 MHz (channel 3) for NTSC.
Color system: NTSC M/N.
All picture settings at 50% (brightness, color contrast, hue).
Bass, treble and balance at 50%; volume at 25%.
All service-unfriendly modes (if present) are disabled. The service unfriendly modes are:
Timer / Sleep timer.
Child / parental lock.
Blue mute.
Hotel / hospital mode.
Auto shut off (when no "IDENT" video signal is received for 15 minutes).
Skipping of non-favourite presets / channels.
Auto-storage of personal presets.
Auto user menu time-out.
Auto Volume Levelling (AVL).
How to enter
To enter SDM, use one of the following methods:
Press the following key sequence on the remote control transmitter: "062596" directly followed by
the MENU button (do not allow the OSD display to time out between entries while keying the
sequence).
Short SDM jumper (item 4022, see Figure 'SDM Service jumper') on the TV board and apply AC
Power. Remove the short after start-up. Caution : Entering SDM by shorting 'Service' jumpers will
override the software protections. Do this only for a short period. When doing this, the service-
technician must know exactly what he is doing, as it could damage the television set .
Figure: SDM Service jumper
After entering SDM, the following screen is visible, with SDM in the upper right corner of the screen to
indicate that the television is in Service Default Alignment Mode.
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SPMS Page 3 of 14
Figure: SDM menu (example from LC4.2E)
How to navigate
When you press the MENU button on the remote control, the set will switch on the normal user menu in
the SDM mode.
How to exit
Switch the set to STANDBY by pressing the POWER button on the remote control transmitter.
If you turn the television set off by removing the AC Power (i.e., unplugging the television) or by using
the POWER button on the TV set, the television set will remain in SDM when AC Power is re-applied,
and the error buffer is not cleared.
Service Alignment Mode (SAM)
Purpose
To change option settings.
To display / clear the error code buffer.
To perform alignments.
Specifications
Operation hours counter (maximum five digits displayed).
Software version, Error codes, and Option settings display.
Error buffer clearing.
Option settings.
Software alignments (Tuner, White Tone, Geometry, and Audio).
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SPMS Page 4 of 14
NVM Editor.
ComPair Mode switching.
How to enter
Press the following key sequence on the remote control transmitter: "062596' directly followed by the
OSD/STATUS/INFO button (do not allow the OSD display to time out between entries while keying the
sequence).
After entering SAM, the following screen is visible, with SAM in the upper right corner of the screen to
indicate that the television is in Service Alignment Mode.
Figure: SAM menu (example from LC4.2E)
Menu explanation
1. LLLLL. This represents the run timer. The run timer counts normal operation hours (including
"on/off" switching), but does not count stand-by hours.
2. AAAABCD-X.YY/EEEEEE_F.GG. This is the software identification of the Main/Scaler
microprocessor:
A = the chassis name.
B = the region: E= Europe, A= Asia Pacific, U= NAFTA, L= LATAM.
C = the software diversity:
Europe: T= 1 pg TXT, F= Full TXT, V= Voice ctrl.
LATAM and NAFTA: N= Stereo non-dBx, S= Stereo dBx.
Asian Pacific: T= TXT, N= non-TXT, C= NTSC.
ALL regions: M= mono, D= DVD, Q= Mk2.
D = the language cluster number.
X = the Main software version number (updated with a major change that is incompatible
11/19/2005
SPMS Page 5 of 14
with previous versions).
YY = the sub software version number (updated with a minor change that is compatible with
previous versions).
EEEEEE = the Scaler SW cluster
F = the Scaler SW version no.
GG = the sub-version no.
3. SAM. Indication of the Service Alignment Mode.
4. Error Buffer (ERR). Shows all errors detected since the last time the buffer was erased. Five errors
possible.
5. Option Bytes (OP). Shows all option settings. See "Options" in the Alignments section for a
detailed description. Seven codes are available.
6. Clear. Erases the contents of the error buffer. Select the CLEAR menu item and press the CURSOR
RIGHT key. The content of the error buffer is cleared.
7. Options. Used to set the option bits. See "Options" in the Alignments section for a detailed
description.
8. Tuner. Used to align the tuner. See "Tuner" in the Alignments section for a detailed description.
9. White Tone. Used to align the white tone. See "White Tone" in the Alignments section for a
detailed description.
10. Audio. No audio alignment is necessary for this television set.
11. NVM Editor. Can be used to change the NVM data in the television set.
12. SC NVM Editor. Can be used to edit Scaler NVM.
13. Test Pattern. For future use.
14. ComPaIr. Can be used to switch the television to "In System Programming" (ISP) mode, for
software uploading via ComPair.
Caution: When this mode is selected without ComPair connected, the TV will be blocked. Remove
the AC power to reset the TV.
How to navigate
In SAM, select menu items with the CURSOR UP/DOWN keys on the remote control transmitter.
The selected item will be highlighted. When not all menu items fit on the screen, use the CURSOR
UP/DOWN keys to display the next / previous menu items.
With the CURSOR LEFT/RIGHT keys, it is possible to:
Activate the selected menu item.
Change the value of the selected menu item.
Activate the selected submenu.
In SAM, when you press the MENU button twice, the set will switch to the normal user menus
(with the SAM mode still active in the background). To return to the SAM menu press the MENU
button again.
When you press the MENU key in while in a submenu, you will return to the previous menu.
How to store SAM settings
To store the settings changed in SAM mode, leave the top level SAM menu by using the POWER button
on the remote control transmitter or the television set.
How to exit
Switch the set to STANDBY by pressing the POWER button on the remote control transmitter or on the
television set.
11/19/2005
SPMS Page 6 of 14
Customer Service Mode (CSM)
Purpose
The Customer Service Mode shows error codes and information on the TV's operation settings. The call
centre can instruct the customer (by telephone) to enter CSM in order to identify the status of the set. This
helps the call centre to diagnose problems and failures in the TV set before making a service call.
The CSM is a read-only mode; therefore, modifications are not possible in this mode.
How to enter
To enter CSM, press the following key sequence on the remote control transmitter: " 123654 " (do not
allow the OSD display to time out between entries while keying the sequence).
Upon entering the Customer Service Mode, the following screen will appear:
Figure: CSM menu (example from LC4.2E)
Menu explanation
1. Indication of the decimal value of the operation hours counter, Main/Scaler software version (see
'Service Alignment Mode' for an explanation), and service mode (CSM= Customer Service Mode).
2. Displays the last five errors detected in the error code buffer.
3. Displays the option bytes.
4. Displays the type number version of the set (option).
5. Reserved.
6. Indicates the television is receiving an 'IDENT' signal on the selected source. If no 'IDENT' signal is
detected, the display will read 'NOT TUNED'
7. Displays the detected Color system (e.g. PAL/NTSC).
8. Displays the detected Audio (e.g. stereo/mono).
9. Displays the picture setting information.
10. Displays the sound setting information.
How to exit
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SPMS Page 7 of 14
To exit CSM, use one of the following methods:
Press the MENU, STATUS (or EXIT/INFO/[i+]), or POWER button on the remote control
transmitter.
Press the POWER button on the television set.
Problems and Solving Tips (Related to CSM)
Picture Problems
Note : The problems described below are all related to the TV settings. The procedures used to change the
value (or status) of the different settings are described.
Picture too dark or too bright
If:
The picture improves when you press the AUTO PICTURE button on the remote control
transmitter, or
The picture improves when you enter the Customer Service Mode,
Then:
1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to
choose PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter. This brings up the normal user menu.
3. In the normal user menu, use the CURSOR UP/DOWN keys to highlight the PICTURE sub menu.
4. Press the CURSOR LEFT/RIGHT keys to enter the PICTURE sub menu.
5. Use the CURSOR UP/DOWN keys (if necessary) to select BRIGHTNESS.
6. Press the CURSOR LEFT/RIGHT keys to increase or decrease the BRIGHTNESS value.
7. Use the CURSOR UP/DOWN keys to select PICTURE.
8. Press the CURSOR LEFT/RIGHT keys to increase or decrease the PICTURE value.
9. Press the MENU button on the remote control transmitter twice to exit the user menu.
10. The new PERSONAL preference values are automatically stored.
White line(s) around picture elements and text
If:
The picture improves after you have pressed the AUTO PICTURE button on the remote control
transmitter,
Then:
1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to
choose PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter. This brings up the normal user menu.
11/19/2005
SPMS Page 8 of 14
3. In the normal user menu, use the CURSOR UP/DOWN keys to highlight the PICTURE sub menu.
4. Press the CURSOR LEFT/RIGHT keys to enter the PICTURE sub menu.
5. Use the CURSOR UP/DOWN keys to select SHARPNESS.
6. Press the CURSOR LEFT key to decrease the SHARPNESS value.
7. Press the MENU button on the remote control transmitter twice to exit the user menu.
8. The new PERSONAL preference value is automatically stored.
Snowy picture
Check CSM line 6. If this line reads "Not Tuned", check the following:
Antenna not connected. Connect the antenna.
No antenna signal or bad antenna signal. Connect a proper antenna signal.
The tuner is faulty (in this case line 2, the Error Buffer line, will contain error number 10). Check
the tuner and replace/repair the tuner if necessary.
Black and white picture
If:
The picture improves after you have pressed the AUTO PICTURE button on the remote control
transmitter,
Then:
1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to
choose PERSONAL picture mode.
2. Press the MENU button on the remote control transmitter. This brings up the normal user menu.
3. In the normal user menu, use the CURSOR UP/DOWN keys to highlight the PICTURE sub menu.
4. Press the CURSOR LEFT/RIGHT keys to enter the PICTURE sub menu.
5. Use the CURSOR UP/DOWN keys to select COLOR.
6. Press the CURSOR RIGHT key to increase the COLOR value.
7. Press the MENU button on the remote control transmitter twice to exit the user menu.
8. The new PERSONAL preference value is automatically stored.
Menu text not sharp enough
If:
The picture improves after you have pressed the AUTO PICTURE button on the remote control
transmitter,
Then:
1. Press the AUTO PICTURE button on the remote control transmitter repeatedly (if necessary) to
choose PERSONAL picture mode.
11/19/2005
SPMS Page 9 of 14
2. Press the MENU button on the remote control transmitter. This brings up the normal user menu.
3. In the normal user menu, use the CURSOR UP/DOWN keys to highlight the PICTURE sub menu.
4. Press the CURSOR LEFT/RIGHT keys to enter the PICTURE sub menu.
5. Use the CURSOR UP/DOWN keys to select PICTURE.
6. Press the CURSOR LEFT key to decrease the PICTURE value.
7. Press the MENU button on the remote control transmitter twice to exit the user menu.
8. The new PERSONAL preference value is automatically stored.
ComPair
Introduction
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 Force/SearchMan electronic manual of the defective chassis, schematics
and PWBs are only a mouse click away.
Specifications
ComPair consists of a Windows based fault finding 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(s).
The ComPair fault finding 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/UART level. ComPair can access the I2C/UART
bus o