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How to Connect
This is described in the chassis fault finding database in
ComPair.
TO TV
TO
TO
I 2 C SERVICE
UART SERVICE
CONNECTOR
CONNECTOR
ComPair II
Multi
function
RC in
RC out
Optional
Power
Link/
Mode
Switch
Activity
PC
Optional power
HDMI
2
I
C only
Figure 5-12 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.
•
Software is available via the Philips Service web portal.
•
ComPair UART interface cable for Q54x.x.
(using 3.5 mm Mini Jack connector): 3138 188 75051.
Note: While encounting problems, contact the local support
desk.
5.4.2
Memory and Audio Test
With this tool you can test the memory of the PNX8543, as well
if the PNX51XX is enabled and audio-testing.
What is needed?
–
An USB-stick
–
"TESTSCRIPT Q549". Downloadable from the Philips
Service website from the section "Software for Service
only"
–
A ComPair/service cable (3138 188 75051).
Procedure
Create a directory "JETTFILES" under the root of the USB-stick
–
Place "MemTestTV543.bin" and "autojett.bin" (available in
"TESTSCRIPT Q549") under the directory "JETTFILES"
–
Install the computer program "BOARDTESTLOGGER"
(available in "TESTSCRIPT Q549") on the PC
–
Connect a "ComPair/service"-cable from the service-
connector in the set, into the "multi function" jack at the
front of the ComPair II box:
Required settings in ComPair:
- start up the ComPair application.
- Select the correct database (open file "Q549.2E LA", this
will set the ComPair interface in the appropriate mode).
- Close ComPair
–
Start up the program "BOARDTESTLOGGER" and select
"COMx"
–
Put the USB stick into the TV and start up the TV while
pressing the "i+"-button on a Philips DVD RC6 remote
control (it's also possible to use a TV remote in "DVD"-
mode)
Service Modes, Error Codes, and Fault Finding
TO
UART SERVICE
CONNECTOR
2
I
C
RS232 /UART
ComPair II Developed by Philips Brugge
5V DC
E_06532_036.eps
150208
Q549.6E LA
–
On the PC the memory test is shown now. This is also
visible on the TV screen.
–
In "BOARDTESTLOGGER" an option "Send extra UART
command" can be found where you can select "AUD1".
This command generates hear test tones of 200, 400,
1000, 2000, 3000, 5000, 8000 and 12500Hz.
5.5
Error Codes
5.5.1
Introduction
The error code buffer contains all detected errors since the last
time the buffer was erased. The buffer is written from left to
right, new errors are logged at the left side, and all other errors
shift one position to the right.
When an error occurs, it is added to the list of errors, provided
the list is not full. When an error occurs and the error buffer is
full, then the new error is not added, and the error buffer stays
intact (history is maintained).
To prevent that an occasional error stays in the list forever, the
error is removed from the list after more than 50 hrs. of
operation.
When multiple errors occur (errors occurred within a short time
span), there is a high probability that there is some relation
between them.
New in this chassis is the way errors can be displayed:
•
There is a simple blinking LED procedure for board level
repair (home repair) so called LAYER 1 errors next to the
existing errors which are LAYER 2 errors (see
–
LAYER 1 errors are one digit errors.
–
LAYER 2 errors are 2 digit errors.
•
In protection mode.
–
From consumer mode: LAYER 1.
–
From SDM mode: LAYER 2.
•
Fatal errors, if I2C bus is blocked and the set reboots,
CSM and SAM are not selectable.
–
From consumer mode: LAYER 1.
–
From SDM mode: LAYER 2.
Important remark:
For all errors detected by MIPS which are fatal =>
rebooting of the TV set (reboot starts after LAYER 1
error blinking), one should short the solder paths
(SDM) at start-up from the power OFF state by mains
interruption and not via the power button to trigger the
SDM via the hardware pins.
•
In CSM mode
–
When entering CSM: error LAYER 1 will be displayed
by blinking LED. Only the latest error is shown.
•
In SDM mode
–
When SDM is entered via Remote Control code or the
hardware pins, LAYER 2 is displayed via blinking LED.
•
In the "ON" state
–
In "Display error mode", set with the RC commands
"mute_06250X _OK" LAYER 2 errors are displayed via
blinking LED.
•
Error display on screen.
–
In CSM no error codes are displayed on screen.
–
In SAM the complete error list is shown.
Basically there are three kinds of errors:
•
Errors detected by the Stand-by software which lead to
protection. These errors will always lead to protection and
an automatic start of the blinking LED LAYER 1 error.
(see section
"5.6 The Blinking LED
•
Errors detected by the Stand-by software which not
lead to protection. In this case the front LED should blink
the involved error. See also section
Error
Buffer,
Extra
minutes before the TV starts blinking the error (e.g. LAYER
1 error = 2, LAYER 2 error = 15 or 53).
•
Errors detected by main software (MIPS). In this case
the error will be logged into the error buffer and can be read
5.
EN 27
Table
Procedure").
"5.5 Error
Codes,
Info". Note that it can take up several
2009-May-29
5-2).
5.5.4
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