Vcom2 - Philips 42PFL3604/12 Service Manual

EN 12 5. TPS2.2E LA
How to EXIT
Choose "EXIT", and press the "OK" button. Turn "Off" the TV
via the side control key and then turn "On" the TV again.
5.2 Software Upgrading
5.2.1 ComPair
Introduction
ComPair (Computer Aided Repair) is a Service tool for Philips
Consumer Electronics products. and offers the following:
1. ComPair helps to quickly get an understanding on how to
repair the chassis in a short and effective way.
2. ComPair allows very detailed diagnostics and is therefore
capable of accurately indicating problem areas. No
2
knowledge on I C or UART commands is necessary,
because ComPair takes care of this.
3. ComPair speeds up the repair time since it can
automatically communicate with the chassis (when the uP
is working) and all repair information is directly available.
4. ComPair features TV software up possibilities.
Specifications
ComPair consists of a Windows based fault finding program
and an interface box between PC and the (defective) product.
The ComPair II interface box is connected to the PC via an
USB cable. For the TV chassis, the ComPair interface box and
the TV communicate via a bi-directional cable via the service
connector(s).
The ComPair fault finding program is able to determine the
problem of the defective television, by a combination of
automatic diagnostics and an interactive question/answer
procedure.
How to Connect
This is described in the chassis fault finding database in
ComPair.
TO
UART SERVICE
CONNECTOR
ComPair II
RC in
RC out
Optional Power Link/ Mode
Switch Activity
HDMI
2
I C only
Figure 5-3 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!
2009-May-29
Service Modes, Error Codes, and Fault Finding
TO TV
TO TO
I 2 C SERVICE
UART SERVICE
CONNECTOR CONNECTOR
Multi
function
2
I C
RS232 /UART
PC
ComPair II Developed by Philips Brugge
Optional power
5V DC
10000_036_090121.eps
090121
How to Order
ComPair II order codes:
• ComPair II interface: 3122 785 91020.
• Programming software can be downloaded from the Philips
Service portal.
• ComPair UART interface cable for TPS2.2x xx.
(using JST PHR-3, 2 mm pitch connector):
3122 785 90630.
Note: While having problems, contact the local support desk.
5.3 Error Codes
The error code buffer contains all errors detected since the last
time the buffer was erased. The buffer is written from left to
right. When an error occurs that is not yet in the error code
buffer, it is displayed at the left side and all other errors shift one
position to the right.
5.4 Fault Finding and Repair Tips
5.4.1 Speakers
Make sure that the volume is set to minimum during
disconnecting the speakers in the ON-state of the TV. The
audio amplifier can be damaged by disconnecting the speakers
during ON-state of the set!
5.4.2 Tuner
Attention: In case the tuner is replaced, always check the tuner
options.