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connector (located on the Main panel, (see figure "Top view
Mono Carrier" in chapter 8 "Alignments").
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 I
2
can access the I
C bus of the television. ComPair can send
2
and receive I
C 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 I
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 extent.
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.
Besides 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.
5.4.3
How to Connect ComPair
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 AC power adapter to the supply connector
(marked with "POWER 9V DC") on the ComPair interface.
4. Switch the ComPair interface OFF.
5. Switch the television set OFF (remove the AC power).
6. Connect the ComPair interface cable between the
connector on the rear side of the ComPair interface
2
(marked with "I
C") and the ComPair connector on the
mono carrier (see figure "Top view Mono Carrier" in
chapter 8 "Alignments").
7. Plug the AC power adapter in the AC power outlet and
switch on the interface. 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.
Service Modes, Error Codes, and Fault Finding
2
C level. ComPair
2
C busses
L03.2L AA
Figure 5-2 ComPair connection
5.4.4
How to Order
ComPair order codes (EU/AP/LATAM):
•
Starter kit ComPair32/SearchMan32 software and
ComPair interface (excl. transformer): 3122 785 90450.
•
ComPair interface (excl. transformer): 4822 727 21631.
•
Starter kit ComPair32 software (registration version): 3122
785 60040.
•
Starter kit SearchMan32 software: 3122 785 60050.
•
ComPair32 CD (update): 3122 785 60070 (year 2002),
3122 785 60110 (year 2003 onwards).
•
SearchMan32 CD (update): 3122 785 60080 (year 2002),
3122 785 60120 (year 2003), 3122 785 60130 (year 2004).
•
ComPair firmware upgrade IC: 3122 785 90510.
•
Transformer (non-UK): 4822 727 21632.
•
Transformer UK: 4822 727 21633.
•
ComPair interface cable: 3122 785 90004.
•
ComPair interface extension cable: 3139 131 03791.
5.4.5
Error Buffer
The error code buffer contains all detected errors 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 written at the left side and all other errors shift one
position to the right.
5.4.6
How To Read the Error Buffer
You can read the error buffer in 3 ways:
•
On screen via the SDAM (only if you have a picture).
Examples:
–
ERROR: 0 0 0 0 0: No errors detected
–
ERROR: 6 0 0 0 0: Error code 6 is the last and only
detected error
–
ERROR: 9 6 0 0 0: Error code 6 was first detected and
error code 9 is the last detected (newest) error
•
Via the blinking LED procedure (when you have no
picture). See next paragraph.
•
Via ComPair.
5.4.7
How to Clear the Error Buffer
The error code buffer is cleared in the following cases:
•
By activation of the CLEAR command in the SDAM menu:
•
If the content of the error buffer has not changed for 50
hours, it resets automatically.
Note:
When leaving SDAM by disconnecting the set from AC power,
the error buffer is not reset.
5.
EN 9
TO
I 2 C SERVICE
CONNECTOR
I 2 C
PC
VCR
Power
9V DC
E_06532_008.eps
180804
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