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8.2 Software Upgrading
8.2.1 ComPair
Introduction
ComPair (Computer Aided Repair) is a Service tool for Philips
Consumer Electronics products. and offers the following:
1. ComPair features TV software upgrade possibilities.
2. ComPair helps you to quickly get an understanding on how
to repair the chassis in a short and effective way (this
feature is not supported in this chassis).
3. ComPair allows very detailed diagnostics and is therefore
capable of accurately indicating problem areas. You do not
have to know anything about I2C or UART commands
yourself, because ComPair takes care of this this feature is
not supported in this chassis).
4. ComPair speeds up the repair time since it can
automatically communicate with the chassis (when the uP
is working) and all repair information is directly available
this feature is not supported in this chassis).
Specifications
ComPair consists of a Windows based fault finding program
and an interface box between PC and the (defective) product.
The (new) ComPair II interface box is connected
an USB cable. For the TV chassis, the ComPair interface box
and the TV communicate via a bi-directional cable via the
service connector(s).
How to Connect
This is described in the ComPair chassis fault finding database.
TO
UART SERVICE
CONNECTOR
Compair
II
RC in
RC out
Optional
Power
Link/
Mode
Switch
Activity
HDMI
2
I C only
Figure 8-3 ComPair II interface connection
Caution: It is compulsory to connect the TV to the PC as
shown in the picture above (with the ComPair interface in
between), as the ComPair interface acts as a level shifter. If
one connects the TV directly to the PC (via UART), ICs will be
blown!
How to Order
ComPair II order codes:
ComPair II interface: 3122 785 91020.
ComPair32 CD (update): 3122 785 60160.
ComPair UART interface cable: 3122 785 90630.
Important:
The two outer pins of the white connector must
be exchanged. This is explained in detail in ComPair.
Note:
If you encounter any problems, contact your local
support desk.
8. Alignments
to the PC
TO TV
TO
TO
2
I C SERVCIE
UART SERVICE
CONNECTOR
CONNECTOR
Multi
function
2
I C
RS232/UART
PC
ComPair II Developed by Philips Brugge
Optional power
5V DC
via
TPT1.1A LA
75
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