Service Modes, Error Codes, And Faultfinding - Philips A02E Service Manual

EN 14 5.
5. Service Modes, Error Codes, and Fault Finding
Index of this chapter:
1. Test points
2. Service Modes
3. Problems and solving tips (related to CSM)
4. ComPair
5. Error Codes
6. The blinking LED procedure
7. Protections
8. Repair tips
9. Software downloading
5.1
Test Points
See chapter 6 " Block Diagrams, Testpoint Overview, and
Waveforms".
Perform measurements under the following conditions:
•
Service Default Mode.
•
Video: colour bar signal.
•
Audio: 3 kHz left, 1 kHz right.
5.2
Service Modes
Service Default Mode (SDM) and Service Alignment Mode
(SAM) offer several features for the service technician, while
the Customer Service Mode (CSM) is used for communication
between a Philips Customer Care Centre (P3C) and a
customer.
There is also the option of using ComPair, a hardware interface
between a computer (see requirements below) and the TV
chassis. It offers the ability of structured troubleshooting, test
pattern generation, error code reading, software version
readout, and software upgrading.
Minimum requirements: a Pentium processor, Windows 95/
98, and a CD-ROM drive (see also paragraph "ComPair").
5.2.1
Service Default Mode (SDM)
Purpose
•
To create a pre-defined setting, to get the same
measurement results as given in this manual.
•
To override SW protections (only when SDM is activated
via shorting the SDM pins on the SSB).
•
To start the blinking LED procedure.
•
Inspection of error buffer, life timer, and software version.
Specifications
•
Tuning frequency: 475.25 MHz for PAL/SECAM.
•
Colour system: SECAM L for France or PAL B/G for the
rest of Europe.
•
All picture settings at 50 % (brightness, colour, contrast).
•
All sound settings at 50 %, except volume at 25 %.
•
All service-unfriendly modes (if present) are disabled, like:
–
(Sleep) timer.
–
Child/parental lock.
–
Blue mute.
–
Automatic volume limiter (AVL).
–
Auto switch-off (when no video signal was received for
10 minutes).
–
Skip/blank of non-favourite pre-sets.
–
Hotel or hospital mode.
–
Local keyboard block.
–
Smart modes.
–
Auto store of personal presets.
–
Auto user menu time-out.
How to Activate SDM
Use one of the following methods:
A02E Service Modes, Error Codes, and Fault Finding
•
Use the standard RC-transmitter and key in the code
"062596", directly followed by the "MENU" button.
Note: It is possible that, together with the SDM, the main
menu will appear. To switch it "off", push the "MENU"
button again.
•
Short circuit, during switch "on" of the set, the two solder
pads on the SSB with the indication "FOR SERVICE".
These solder pads are located at the "tuner" side of the
SSB (just above the large BGA IC).
Caution: If the SDM is activated via these pins, all the
software-controlled protections are de-activated for 15 s.
When these 15 s are expired, the set will shutdown to
protection mode.
•
Use the DST-emulation feature of ComPair.
•
Use the "DEFAULT" button on the Dealer Service Tool
(RC7150).
After activating this mode:
•
"SDM" will appear in the upper right corner of the screen.
•
Also, the error buffer, operating hours, and software
version are displayed (can be toggled "on/off" with the
"STATUS / OSD / [i+]" button).
•
Blinking LED procedure will be started.
•
All software-controlled protections are overridden for 15 s.
When these 15 s are expired, the set will shutdown to
protection mode.
Contents of SDM:
•
HRS. Displays the accumulated total of operation hours
(not the standby hours) in hexadecimal value.
•
SW. Displays the date of the software and the software
version of the ROM
example: A02EB1_1.00 = AAABBC-X.YY.
–
AAA= chassis name.
–
BB= region and/or function name: E= Europe, A= Asia
Pacific, U= NAFTA, L= LATAM, B= Basic, T= Top, P=
PAL, N= NTSC, S= Stereo, M= Mono.
–
C= the language cluster number.
–
X.Y= the software version, where X is the main version
number (different numbers are not compatible with one
another) and Y is the sub version number (a higher
number is always compatible with a lower number).
•
ERR (followed by maximal 8 errors). The most recent error
is displayed at the upper left (for an error explanation see
paragraph "Error Codes").
How to navigate
•
When you press the "MENU" button on the RC transmitter,
the set will toggle between the SDM and the normal user
menu (with the SDM mode still active in the background).
•
When you press the "STATUS / OSD / [i+]" button on the
RC transmitter, the set will toggle only display "SDM". This
mode is useful when performing measurements, then the
OSD info will not generate interference.
How to exit SDM
Use one of the following methods:
•
Switch the set to STANDBY via a standard customer RC-
transmitter (the error buffer is erased).
•
Via a standard customer RC-transmitter: key in "00"-
sequence (the error buffer is not erased).
5.2.2
Service Alignment Mode (SAM)
Purpose
•
To perform alignments.
•
To change option settings.
•
To easily identify the used software version.
•
To view operation hours.
•
To display / clear the error code buffer.