Philips TPE1.1U LA Service Manual Download Page 9

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TPE1.1U LA

5. Service Modes, Error Codes and Fault Finding

index of this chapter:
5.1 Test Points
5.2 Service Modes
5.3 Stepwise Start-up
5.4 ComPair
5.5 Error Codes
5.6 The Blinking LED Procedure
5.7 Protections

5.1 Test Points

The chassis is equipped with test points (Fxxx) printed on the
circuit board assemblies. As most signals are digital, it will be
almost impossible to measure waveforms with a standard
oscilloscope. Therefore, waveforms are not given in this
manual. Several key ICs are capable of generating test
patterns, which can be controlled via ComPair. In this way it is
possible to determine which part is defective.

Perform measurements under the following conditions:

Service Default Mode.
Video: Color bar signal.
Audio: 3 kHz left, 1 kHz right.

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 Customer Helpdesk 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.

requirements for ComPair: a Pentium processor,

Windows 95/98, and a CD-ROM drive (see also paragraph "
ComPair").

5.2 Service Modes

Minimum

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 applicable for protections

detected by stand-by processor) and make the TV start up
to the step just before protection (a sort of automatic
stepwise start up). See paragraph Stepwise Start Up .

To start the blinking LED procedure (not valid in protection

mode).

Tuning frequency 61.25 MHz for NTSC: The TV shall tune
to physical channel 3 only if channel 3 is an analog channel
or if there is no channel 3 installed in the channel map. If
there is a digital channel installed in channel 3, then the
frequency to which the set will tune, would be as specified
in the channel map and could be different from the one
corresponding to the physical channel 3.
All picture settings at 50% (brightness, color, contrast).
All sound settings at 50%, except volume at 25%.
All service-unfriendly modes (if present) are disabled, like:
- (Sleep) timer.
- Child/parental lock.
- Picture mute (blue mute or black mute).
- Automatic volume levelling (AVL).
- Auto switch "off" (when no video signal was received

for 10 minutes).

- Skip/blank of non-favorite pre-sets.

Specifications

-
-
-

"062596" ,

directly followed by the "MENU"

"MENU"

"SDM". They are located outside the

"SDM"

"MENU"

"00"-

"062596"

"INFO"

Smart modes.
Auto store of personal presets.
Auto user menu time-out.

Use one of the following methods:

Use the standard RC-transmitter and key in the code

button.

: It is possible that, together with the SDM, the main

menu will appear. To switch it "off", push the

button again.

Short for a moment the two solder pads [1] on the SSB,
with the indication
shielding. Activation can be performed in all modes, except
when the set has a problem with the Stand-by Processor.

After activating this mode,

will appear in the upper right

corner of the screen (if you have picture).

When you press the

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).

Use one of the following methods:

Switch the set to STAND-BY via the RC-transmitter.
Via a standard customer RC-transmitter: key in
sequence.

To perform (software) alignments.
To change option settings.
To easily identify the used software version.
To view operation hours.
To display (or clear) the error code buffer.

Via a standard RC transmitter: key in the code
directly followed by the

button. After activating SAM

with this method a service warning will appear on the screen,
you can continue by pressing the red button on the RC.

Displays the software version

of the VIPER software (main software) (example:
BX23U-1.2.3.4_12345 = AAAAB_X.Y.W.Z_NNNNN).

= the chassis name.

= the region: A= AP, E= EU, L= Latam, U = US.

= 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). The last two
digits are used for development reasons only, so
they will always be zero in official releases.

= last five digits of 12nc code of the

software.

Displays the software version

of the stand-by processor.

Displays the production code of

the TV, this is the serial number as printed on the back
of the TV set. Note that if an NVM is replaced or is
initialized after corruption, this production code has to
be re-written to NVM. ComPair will foresee in a
possibility to do this.

Displays the accumulated total of

operation hours (not the stand-by hours). Every time the
TV is switched "on/off", 0.5 hours is added to this number.

(Followed by maximal 10 errors). The most recent

error is displayed at the upper left (for an error explanation
see paragraph "Error Codes").

Here the module that generates the

How to Activate SDM

How to Navigate

How to Exit SDM

Purpose

How to Activate SAM

Contents of SAM:

Note