Philips 32PFL9603D/10 Service Manual page 31

5.8.5 Exit "Factory Mode"
When an "F" is displayed in the screen's right corner, this
means that the set is in "Factory" mode, and it normally
happens after a new SSB has been mounted.
To exit this mode, push the "VOLUME minus" button on the
TV's keyboard control for 5 seconds and restart the set.
5.8.6 Logging
When something is wrong with the TV set (f.i.the set is
rebooting) you can check for more information via the logging
in Hyperterminal. The Hyperterminal is available in every
Windows application via Programs, Accessories,
Communications, Hyperterminal. Connect a "ComPair UART"-
cable (3104 311 12742) from the service connector in the TV
set to the "COM1"-port of the PC. After start-up of the
Hyperterminal, fill in a name (f.i. "logging") in the "Connection
Description" box, then apply the following settings:
1. COM1
2. Bits per second = 38400
3. Data bits = 8
4. Parity = none
5. Stop bits = 1
6. Flow control = none
During the start-up of the TV set, the logging will be displayed.
This is also the case during rebooting of the TV set (the same
logging appears time after time). Also available in the logging
is the "Display Option Code" (useful when there is no picture),
look for item "DisplayRawNumber" in the beginning of the
logging. Tip: when there is no picture available during rebooting
you are able to check for "error devices" in the logging (LAYER
2 error) which can be very helpful to determine the failure cause
of the reboot. For protection state, there is no logging.
5.8.7 Loudspeakers
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! Sometimes the set can go into
protection, but that is not always the case. Caution: On a ME8-
styling set (74xx or 76xx-range) with removed back cover the
loudspeakers are automatically disconnected!
5.8.8 IPB
In case of no picture when CSM-test pattern from PNX5100 is
displayed and backlight doesn't light up, It's recommended first
to check the inverter on the IPB + wiring before replacing the
hole display!
5.8.9 Sanken display supply
The 52" sets in this chassis come with a Sanken buy-in supply.
When the primary circuit of the platform supply fails, there is a
high possibility that the main fuse of the Sanken display supply
will break. In this case the Sanken supply must not be replaced
completely, just replace the Sanken main value fuse and repair
the platform supply. For safety reasons, make sure to use the
correct fuse type.
5.8.10 Tuner
Attention: In case the tuner is replaced, always check the tuner
options!
5.8.11 UI over PCI bus
The UI is not integrated in the RGB signal but is send from
PNX8541 to PNX5100 via the PCI bus. TXT and MHEG are
Service Modes, Error Codes, and Fault Finding Q529.1E LA
integrated in the RGB signal. So when TXT signal is available
but no UI, check the PCI bus.
5.8.12 Display option code
Attention: In case the SSB is replaced, always check the
display option code in SAM, even when picture is available.
Performance with the incorrect display option code can lead to
unwanted side-effects for certain conditions.
5.8.13 Upgrade EDID NVM
To upgrade the EDID NVM pin 7 of the EDID NVM has to be
short circuited to ground. Therefore some test points are
foreseen (figure "EDID-NVM pins"). See ComPair for further
instructions.
EDID2 X530
EDID3 X530
EDID1 X530
Figure 5-13 EDID-NVM pins
5. EN 31
EDID4 X530
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