Philips FTP1.1E Service Manual page 26

EN 26 5.
Table 5-2 Error Code Table
Error Device Description
1 M24C32 NVM,
spontaneous
blinking error 1
3 SAA4978 PICNIC
4 Supply 5 V 5V protection
5 Supply 8 V 8V protection
6 Slow I2C bus Spontaneous
blocked blinking error 6
8 TDA932x HIP High-end Input
Processor
13 UV1318/... Tuner protection
14 MSPxxxx ITT sound
processor
18 Fast I2C bus Spontaneous
blocked blinking error 18
21 M62320P I/O Expander
26 SAA4992 Falconic
27 T8F24EF Eagle
32 M29W400BT Flash Ram (EPG)
53 AD9883A AD converter 2fh
input
55 3V3_PDP One of the
voltages is not ok +
protection error
56 EPLD EPLD error
76 Audio Amplifier Audio DC
protection
83 TEA6422 Source select
matrix audio
Note:
•
Error codes 1, 6, or 18 are protection codes and in this
case, supplies of some circuits will be switched "OFF".
Also, in protection, the LED will blink the number of times
equivalent to the most recent error code.
5.6
The Blinking LED Procedure
5.6.1
Introduction
Via this procedure, you can make the contents of the error
buffer visible via the front LED. This is especially useful for fault
finding, when there is no picture.
When the SDM is entered, the front LED will show (blink) the
contents of the error-buffer. Error-codes > 10 are shown as
follows:
–
A long blink of 750 ms (which is an indication of the decimal
digit),
–
A pause of 1.5 s,
–
"n" short blinks (where "n" = 1 - 9),
–
When all the error-codes are displayed, the sequence
finishes with a LED blink of 3 s,
–
The sequence starts again.
Example: Error 12 9 6 0 0.
After activation of the SDM, the front LED will show:
–
1 long blink of 750 ms (which is an indication of the decimal
digit) followed by a pause of 1.5 s,
–
2 short blinks followed by a pause of 3 s,
–
9 short blinks followed by a pause of 3 s,
–
6 short blinks followed by a pause of 3 s,
–
1 long blink of 3 s to finish the sequence,
–
The sequence starts again.
Note: If errors 1, 6, or 18 occur, the LED always gives the last
occurred error even if the set is NOT in service mode.
FTP1.1E Service Modes, Error Codes, and Fault Finding
Def. Def. Module
item indication
7011 Control
7713 Feature Box
/ +5V Supply
/ +8V Supply
/ Slow I2C Blocked
7323 Chroma IF IO
1T01 Tuner
7A02 Audio module
/ Fast I2C Blocked
7P56 Video Dual Screen
7718 +3V (FBX) Supply
7724 +3V (FBX) Supply
7012 EPG Memory
7L01 HD
/ Supply
7V01 Video control
- -
7I17 Audio Source
Select
5.6.2
How to Enter
Use one of the following methods:
Diagr.
•
Enter the SDM (only via soldering pads marked "SDM" on
B5a
SSP). The blinking front LED will show the entire contents
of the error buffer (this works in "normal operation" mode
and in "protection" mode).
B3a
•
Transmit the commands "MUTE" - "062500" - "OK" with a
B5a
normal RC. The complete error buffer is shown. Take
B5a
notice that it takes some seconds before the blinking LED
/
starts.
•
Transmit the commands "MUTE" - "06250x" - "OK" with a
B2
normal RC (where "x" is a number between 1 and 5). When
B13 x= 1 the last detected error is shown, x= 2 the second last
error, etc.... Take notice that it takes some seconds before
B6a
the blinking LED starts.
/
•
"DIAGNOSE X" with the DST (where "x" is a number
between 1 and 5). When x= 1 the last detected error is
B15b
shown, x= 2 the second last error, etc.... When x = 0 all
B3b
errors are shown.
B3c
B5a
5.7
Protections
B19c
/
5.7.1
Introduction
B19d,f
This chassis has only one microprocessor (OTC), which
A
remains active during Standby. This because power of the
microprocessor and the attached memory chip set is coming
B14d
from the 3V3 supply, which is derived from the 5V Standby-
circuitry. Therefore, in both Power-on as in Standby mode, the
microprocessor is connected to this power supply.
If a fault situation is detected, an error code will be generated
and if necessary, the set is put in protection mode. The
protection mode is indicated by the blinking of the front LED at
a frequency of 3 Hz (or by a coded blinking in special cases).
The content of the error buffer can be read via the service menu
(SAM), the blinking LED procedure or via DST/ComPair.
To get a quick diagnosis, this chassis has three service-modes
implemented:
•
The Customer Service Mode (CSM).
•
The Service Default Mode (SDM). Start-up of the set in a
predefined way.
•
The Service Alignment Mode (SAM). In this mode, items
of the set can be adjusted via a menu.
You can enter both SDM and SAM modes via the "service
pads" on the SSP, via an RC-transmitter (DST or standard RC),
or via ComPair. It is not possible to enter the SAM in "standby";
the TV has to be in "normal operation" mode.
The "Protection Diagram" shows the structure of the protection
system. See diagram below.
TUNER
FAST I2C BUS BLOCKED
SLOW I2C BUS BLOCKED
EPLD
+
FBX
+
3D COMB (US)
DC_PROT (from audio)
IRQ-DIGITAL (98)
+8V_CON
+8V SENSE (105)
+5V_CON +5V SENSE (106)
DC/DC
I2C
PROTECTION
Figure 5-4 Protection diagram.
OTC
CL 36532053_065.eps
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