Philips 32PF9968/10 Service Manual page 35

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following voltages is missing: +400V, +12V or +24V, will lead to
protection (blinking error 63). The TV is switched off.
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 fuse and repair the
platform supply. For safety reasons, make sure to use the
correct fuse type.
5.8.8 SSB service supply connector
Connector 1B40 can be used to apply external supply (+12V
and +5V). In this way you don't need 110 V AC mains supply
for troubleshooting on the SSB. e.g. component level repair.
5.8.9 Tuner
For access to the components located under the tuner itself,
you need to desolder the ground connections and bend the
tuner up. To maintain a good performing tuner one should
make a new ground connection to the SSB, for instance by use
of a wire.
5.8.10 Upgrade EDID NVM
To upgrade the EDID NVM you must short circuit pin 7 of the
EDID NVM to ground. Therefore some test points are foreseen
(figure "EDID-NVM pins"). See ComPair for further instructions.
1
1
Figure 5-12 EDID-NVM pins
Table 5-3 NAND Flash content
Partition
JFFS2 partition 1 (application
read write data)
JFFS2 partition 0 (Application
read only once data)
JFFS2 partition 0 (Application
read only upgradable data)
SQUASHFS partition
BFFS partition 2 (DVD OK)
BFFS partition 1 (DVD cursor
down)
BFFS partition 0
Block 0
• The overview of the Nand Flash content shows the content
of the different partitions. It also shows which part of the
one-zip file erases and programs which part of the Nand
Flash.
Service Modes, Error Codes, and Fault Finding
1
H 16770 098 eps
NAND Flash content
Content
Channel table, EPG data
HDMI keys, back up display file
wizard pictures, display file, cabinet file,
upgrade assistant
Main software (Mips) Linux structure (root
file system)
Default software upgrade application
TriMedia software boot batch file 2
Back up software upgrade application boot
batch file 1 Linux kernel JETT: needed for
ComPair
Jaguar Boot loader boot batch file 0
μBTM partition table
Q523.1U LA
5.9 Software Upgrading
5.9.1 Introduction
The set software and security keys are stored in a NAND-
Flash, which is connected to the PNX85xx via the PCI bus.
It is possible for the user to upgrade the main software via the
USB port. This allows replacement of a software image in a
stand alone set, without the need of an E-JTAG debugger. A
description on how to upgrade the main software can be found
in chapter 3 "Directions For Use".
Important: When the NAND-Flash must be replaced, a new
SSB must be ordered, due to the presence of the security
keys!!! (copy protection keys, MAC address,...).
Perform the following actions after SSB replacement:
1. Set the correct option codes (see sticker inside the TV).
2. Update the TV software (see chapter 3 for instructions).
3. Perform the alignments as described in chapter 8 (section
"Reset of Repaired SSB").
4. Check in CSM if the HDMI keys are valid.
For the correct order number of a new SSB, always refer to the
Spare Parts list!
5.9.2 Main Software Upgrade
The software image resides in the NAND-Flash, and is
formatted in the following way:
FUS UPG Upgrade All UPG
erase program erase
x
x
x x
x x
• Remark: the above does not mean that you can reprogram
your HDMI keys with the UpgradeAll upg file from the one
zip file. This can only be done in a secure environment (e.g.
the factory).
5. EN 35
One Zip
Flash Utils UPG
program erase program
x x
x x
x x
x x
x x
x x x x
x x
N