Software Upgrading - Philips JL2.1E Service Manual

EN 32 5. JL2.1E AA
5.8.1 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.
5.8.2 MPIF
Important things to make the MPIF work:
• Supply.
• Clock signal from the AVIP.
2
• I C from the VIPER.
5.8.3 AVIP
Important things to make the AVIP work:
• Supplies.
• Clock signal from the VIPER.
2
• I C from the VIPER (error 29 and 31).
5.8.4 DC/DC Converter
Introduction
• The best way to find a failure in the DC/DC converters is to
check their starting-up sequence at power "on" via the
Mains/AC Power cord, presuming that the Stand-by
Processor is operational.
• If the input voltage of the DC/DC converters is around 12 V
(measured on the decoupling capacitors 2U17/2U25/
2U45) and the ENABLE signals are "low" (active), then the
output voltages should have their normal values.
• First, the Stand-by Processor activates the +1V2 supply
(via ENABLE-1V2).
• Then, after this voltage becomes present and is detected
OK (about 100 ms), the other two voltages (+2V5 and
+3V3) will be activated (via ENABLE-3V3).
• The current consumption of controller IC 7U00 is around 20
mA (that means around 200 mV drop voltage across
resistor 3U22).
• The current capability of DC/DC converters is quite high
(short-circuit current is 7 to 10 A), therefore if there is a
linear integrated stabilizer that, for example delivers 1.8V
from +3V3 with its output overloaded, the +3V3 stays
usually at its normal value even though the consumption
from +3V3 increases significantly.
• The +2V5 supply voltage is obtained via a linear stabilizer
made with discrete components that can deliver a lot of
current. Therefore, in case +2V5 (or +2V5D) is short-
circuited to GND, the +3V3 will not have the normal value
but much less. The +2V5D voltage is available in stand-by
mode via a low power linear stabilizer that can deliver up to
30 mA. In normal operation mode, the value of this supply
voltage will be close to +2V5 (20 - 30 mV difference).
• The supply voltages +5V and +8V6 are available on
connector 1M46; they are not protected by fuses. +12VSW
is protected for over-currents by fuse 1U04.
Fault Finding
• Symptom: +1V2, +2V5, and +3V3 not present (even for a
short while ~10ms).
1. Check 12V availability (fuse 1U01, resistor 3U22,
power MOS-FETs) and enable signal ENABLE-1V2
(active low).
2. Check the voltage on pin 9 (1.5 V).
3. Check for +1V2 output voltage short-circuit to GND that
can generate pulsed over-currents 7-10 A through coil
5U03.
4. Check the over-current detection circuit (2U12 or 3U97
interrupted).
Service Modes, Error Codes, and Fault Finding
5.9
5.9.1
• Symptom: +1V2 present for about 100 ms. Supplies +2V5
and +3V3 not rising.
1. Check the ENABLE-3V3 signal (active "low").
2. Check the voltage on pin 8 (1.5 V).
3. Check the under-voltage detection circuit (the voltage
on collector of transistor 7U10-1 should be less than
0.8 V).
4. Check for output voltages short-circuits to GND (+3V3,
+2V5 and +2V5D) that generate pulsed over-currents
of 7-10 A through coil 5U00.
5. Check the over-current detection circuit (2U18 or 3U83
interrupted).
• Symptom: +1V2 OK, but +2V5 and +3V3 present for about
100 ms. Cause: The SUPPLY-FAULT line stays "low"
even though the +3V3 and +1V2 is available. The Stand-by
Processor is detecting that and switches all supply
voltages "off".
1. Check the value of +2V5 and the drop voltage across
resistor 3U22 (they could be too high)
2. Check if the +1V2 or +3V3 are higher than their normal
values. This can be due to defective DC feedback of
the respective DC/DC converter (3U18 or 3UA7).
• Symptom: +1V2, +2V5, and +3V3 look okay, except the
ripple voltage is increased (audible noise can come from
the filtering coils 5U00 or 5U03).
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.
Note 2: The 12V switch and 8V6 switch (see "DC/DC
CONNECTIONS" schematic) are not present on board: they
are bypassed by jumpers.

Software Upgrading

Introduction
The set software and security keys are stored in a NAND-
Flash, 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
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!!! 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 keys are valid.
Table 5-4 SSB service kits
Model Number
32PF9830/10
37PF9830/10
42PF9830/10
New SSB order code
3104 328 41231
3104 328 41241
3104 328 41251