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Cause: Instability of the frequency and/or duty cycle of one
or both DC/DC converters.
–
Check resistor 3U06, the decoupling capacitors, the
AC feedback circuits (2U20 + 2U21 + 3U14 + 3U15 for
+1V2 or 2U19 + 2U85 + 3U12 + 3U13 for +3V3), the
compensation capacitors 2U09, 2U10, 2U23 and
2U73, and IC 7U00.
Note 1: If fuse 1U01 is broken, this usually means a pair of
defective power MOSFETs (7U01 or 7U03). Item 7U00 should
be replaced as well in this case.
5.9
Software Upgrading
5.9.1
Introduction
The set software and security keys are stored in a NAND-Flash
(item 7P80), which is connected to the VIPER 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
standalone set, without the need of an E-JTAG debugger. A
description on how to upgrade the main software can be found
in the "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!!! See table "SSB service kits" for the order codes.
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.
4. Check in CSM menu 5 if the HDMI key is valid.
Table 5-4 SSB service kits (for EJ3.0U LA chassis)
Model Number
all CTNs
Note: After replacing the SSB, execute the alignments
according to the instructions in this manual.
5.9.2
Main Software Upgrade
The software image resides in the NAND-Flash, and is
formatted in the following way:
Partition 1
Trimedia2 image
Trimedia1 image
MIPS image
Partition 0
USB Download Application
uBTM (boot block)
Figure 5-14 NAND-Flash format
Executables are stored as files in a file system. The boot loader
(uBTM) will load the USB Download Application in partition 0
(USB drivers, bootscript, etc.). This application makes it then
possible to upgrade the main software via USB.
Installing "Partition 0" software is possible via an external
EJTAG tool, but also in a special way with the USB stick (see
description in paragraph "Partition 0").
Service Modes, Error Codes, and Fault Finding
New SSB order code
See spare parts list
USB CUSTOMER
USB SERVICE
EJTAG
E_14700_082.eps
120505
EJ3.0U PA
Partition 1 (Customer)
To do a main software upgrade (partition 1) via USB, the set
must be operational, and the "Partition 0" files for the VIPER
must be installed in the NAND-Flash!
The new software can be uploaded to the TV by using a
portable memory device or USB storage compliant devices
(e.g. USB memory stick). You can download the new software
from the Philips website to your PC.
Partition 0 (Service)
If the "Partition 0" software is corrupted, the software needs to
be re-installed.
To upgrade this "USB download application" (partition 0 except
the bootblock), insert an USB stick with the correct software,
but press the "red" button on the remote control (in "TV" mode)
when it is asked via the on screen text.
Caution:
•
The USB download application will now erase both
partitions (except the boot block), so you need to reload the
main SW after upgrading the USB download application.
As long as this is not done, the USB download application
will start when the set is switched "ON".
•
When something goes wrong during the progress of this
method (e.g. voltage dip or corrupted software file), the set
will not start up, and can only be recovered via the EJTAG
tool!
5.9.3
Manual Start of the Main Software Upgrade Application
Normally, the software upgrading procedure will start
automatically, when a memory device with the correct software
is inserted, but in case this does not work, it is possible to force
the TV into the software upgrade application. To do so:
•
Disconnect the TV from the Mains/AC Power.
•
Press the "OK" button on a Philips DVD RC-6 remote
control (it is also possible to use the TV remote in "DVD"
mode).
•
Keep the "OK" button pressed while connecting the TV to
the Mains/AC Power.
•
The software upgrade application will start.
•
When a memory device with upgrade software is
connected, the upgrade process will start.
5.9.4
Stand-by Software Upgrade
It will be possible to upgrade the Stand-by software via a PC
and the ComPair interface. Check paragraph "ComPair" on
how to connect the interface. To upgrade the Stand-by
software, use the following steps:
1. Disconnect the TV from the Mains/AC Power.
2. Short circuit the SPI pins [2] on the SSB. They are located
outside the shielding (see figure "SDM and SPI service
pads" earlier in this chapter).
3. Keep the SPI pins shorted while connecting the TV to the
Mains/AC Power.
4. Release the short circuit after approx. two seconds.
5. Start up HyperTerminal (can be found in every Windows
application via Programs -> Accessories ->
Communications -> HyperTerminal. Use the following
settings:
–
COM1
–
Bits per second = 38400
–
Data bits = 8
–
Parity = none
–
Stop bits = 1
–
Flow control = Xon / Xoff.
6. Press "Shift U" on your PC keyboard. You should now see
the following info:
–
PNX2015 Loader V1.0
–
19-09-2003
–
DEVID=0x05
–
Erasing
5.
EN 29
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