Service Modes, Error Codes, and Fault FindingEM5.1E5.EN 25
2. Check line 7 "Brightness" and 8 "Contrast". If the value of 5.4ComPair
line 7 is low (< 10) or the value of line 8 is low (< 10),
increase the "Brightness" or the "Contrast" value.5.4.1 Introduction
Picture too bright
1. Press "MENU", "TV", "PICTURE", "SMART PICTURE". In ComPair (Computer Aided Repair) is a service tool for Philips
Consumer Electronics products. ComPair is a further
case the picture improves, decrease the "Brightness" or development on the European DST (service remote control),
the "Contrast" value. The new value(s) are automatically
which allows faster and more accurate diagnostics. ComPair
stored (in "personal" pre-set) for all TV channels.has three big advantages:
2. Check lines 7 "Brightness" and 8 "Contrast". If the value of ?ComPair helps you to quickly get an understanding on how
line 7 is high (> 40) or the value of line 8 is high (> 50).
to repair the chassis in a short time by guiding you
Decrease the "Brightness" value or increase the "Contrast" systematically through the repair procedures.
value.
?ComPair allows very detailed diagnostics (on I2C level)
and is therefore capable of accurately indicating problem
White line around picture elements and textareas. You do not have to know anything about I2C
1. Press "MENU", "TV", "PICTURE", "SMART PICTURE". In commands yourself because ComPair takes care of this.
case the picture improves, decrease the "Sharpness" ?ComPair speeds up the repair time since it can
value. The new value is automatically stored (in "personal" automatically communicate with the chassis (when the
pre-set) for all TV channels.microprocessor is working) and all repair information is
2. Check line 11 "Sharpness". Decrease the "Sharpness" directly available. When ComPair is installed together with
value. The new value is automatically stored for all TV the SearchMan electronic manual of the defective chassis,
channels.schematics and PWBs are only a mouse click away.
No picture5.4.2 Specifications
Check line 27 "Tuned bit". In case the value is "No", install the
required program again. Open the installation menu and ComPair consists of a Windows based faultfinding program
perform manual installation.
and an interface box between PC and the (defective) product.
The ComPair interface box is connected to the PC via a serial
Blue pictureor RS232 cable.
No proper signal is received. Check the aerial cable/aerial For this chassis, the ComPair interface box and the TV
system.communicate via a bi-directional service cable via the service
connector.
Blue picture and/or unstable picture
A scrambled or decoded signal is received.The ComPair faultfinding program is able to determine the
problem of the defective television. ComPair can gather
Black and white picturediagnostic information in two ways:
Check line 9 "Colour". In case the value is low (< 10), increase ?Automatic (by communication with the television):
the "Colour" value. The new value is automatically stored for all ComPair can automatically read out the contents of the
TV channels.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
No colours/colour lines around picture elements or
colours not correct or unstable picturethe television. In this way, it is possible for ComPair to
1. Check line 20 "TV System". If a "strange" system pops up, communicate (read and write) to devices on the I2C
busses of the TV-set.
something has gone wrong during installation. Re-install
the channel.?Manually (by asking questions to you): Automatic
diagnosis is only possible if the micro controller of the
2. In case line 20 is "L", the installed system for this pre-set is television is working correctly and only to a certain extends.
"France", while "West Europe" is required. Install the
required program again: open the installation menu and When this is not the case, ComPair will guide you through
the faultfinding tree by asking you questions (e.g. Does the
perform manual installation. Select system "West Europe".
screen give a picture? Click on the correct answer: YES /
NO) and showing you examples (e.g. Measure test-point I7
Menu text not sharp enoughand click on the correct oscillogram you see on the
1. Press "MENU", "TV", "PICTURE", "SMART PICTURE". In
oscilloscope). You can answer by clicking on a link (e.g.
case picture improves, decrease the contrast value. The text or a waveform picture) that will bring you to the next
new value(s) are automatically stored for all TV channels.
2. Check line 8 "Contrast". The value of line 8 is high (> 50). step in the faultfinding process.
By a combination of automatic diagnostics and an interactive
Decrease the contrast value.question / answer procedure, ComPair will enable you to find
most problems in a fast and effective way.
5.3.2 Sound Problems
Beside fault finding, ComPair provides some additional
No sound from left and right speakerfeatures like:
Check line 6 "Volume". The value is low. Increase the value of ?Up- or downloading of pre-sets.
"Volume". The new value(s) are automatically stored (in ?Managing of pre-set lists.
"personal" pre-set) for all TV channels.?Emulation of the Dealer Service Tool (DST).
?If both ComPair and SearchMan (Electronic Service
Sound too loud for left and right speakerManual) are installed, all the schematics and the PWBs of
Check line 6 "Volume". The value is high. Decrease the value the set are available by clicking on the appropriate
of " Volume". The new value(s) are automatically stored (in hyperlink.
"personal" pre-set) for all TV channels.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. |
ACEC
