Philips L01.1L AC, Service Manual

Service Modes, Error Codes, and Fault Finding

EN 22

L01.1L AC

5.

4.

Select the STORE menu item.

Colors not correct / unstable picture
Check CSM line 5. Wrong color system installed. To change 
the setting:
1.

Press the MENU button on the remote control.

2.

Select the INSTALLATION sub menu.

3.

Select and change the SYSTEM setting until picture and 
sound are correct.

4.

Select the STORE menu item.

Picture too dark or too bright
Increase / decrease the BRIGHTNESS and / or the 
CONTRAST value when:
•

The picture improves after you have pressed the “Smart 
Picture” button on the remote control. 

•

The picture improves after you have switched on the 
Customer Service Mode

The new “Personal” preference value is automatically stored.

White line around picture elements and text
Decrease the SHARPNESS value when:
•

The picture improves after you have pressed the “Smart 
Picture” button on the remote control. 

The new “Personal” preference value is automatically stored.

Snowy picture
Check CSM line 5. If this line indicates “Not Tuned”, check the 
following:
•

No or bad antenna signal. Connect a proper antenna 
signal.

•

Antenna not connected. Connect the antenna.

•

No channel / pre-set is stored at this program number. Go 
to the INSTALL menu and store a proper channel at this 
program number.

•

The tuner is faulty (in this case the CODES line will contain 
error number 10). Check the tuner and replace / repair if 
necessary.

Snowy picture and/or unstable picture
•

A scrambled or decoded signal is received.

Black and white picture
Increase the COLOR value when:
•

The picture improves after you have pressed the “Smart 
Picture” button on the remote control. 

The new “Personal” preference value is automatically stored.

Menu text not sharp enough
Decrease the CONTRAST value when:
The picture improves after you have pressed the “Smart 
Picture” button on the remote control. 
The new “Personal” preference value is automatically stored.

5.3.2

Sound Problems

No sound or sound too loud (after channel change / 
switching on)
Increase / decrease the VOLUME level when the volume is OK 
after you switched on the CSM. The new “Personal” preference 
value is automatically stored.

5.4

ComPair 

5.4.1

Introduction

ComPair (Computer Aided Repair) is a service tool for Philips 
Consumer Electronics products. ComPair is a further 
development on the European DST (service remote control), 
which allows faster and more accurate diagnostics. ComPair 
has three big advantages:

•

ComPair helps you to quickly get an understanding on how 
to repair the chassis in a short time by guiding you 
systematically through the repair procedures.

•

ComPair allows very detailed diagnostics (on I2C level) 
and is therefore capable of accurately indicating problem 
areas. You do not have to know anything about I2C 
commands yourself because ComPair takes care of this.

•

ComPair speeds up the repair time since it can 
automatically communicate with the chassis (when the 
microprocessor is working) and all repair information is 
directly available. When ComPair is installed together with 
the SearchMan electronic manual of the defective chassis, 
schematics and PWBs are only a mouse click away.

5.4.2

Specifications

ComPair consists of a Windows based faultfinding program 
and an interface box between PC and the (defective) product. 
The ComPair interface box is connected to the PC via a serial 
or RS232 cable. 
In case of the L01 chassis, the ComPair interface box and the 
TV communicate via a bi-directional service cable via the 
service connector (located on the Main panel, see also figure 
8-1 suffix D).
 
The ComPair faultfinding program is able to determine the 
problem of the defective television. ComPair can gather 
diagnostic information in two ways:
•

Automatic (by communication with the television): 
ComPair can automatically read out the contents of the 
entire error buffer. Diagnosis is done on I2C level. ComPair 
can access the I2C bus of the television. ComPair can 
send and receive I2C commands to the micro controller of 
the television. In this way, it is possible for ComPair to 
communicate (read and write) to devices on the I2C 
busses of the TV-set.

•

Manually (by asking questions to you): Automatic 
diagnosis is only possible if the micro controller of the 
television is working correctly and only to a certain extends. 
When this is not the case, ComPair will guide you through 
the faultfinding tree by asking you questions (e.g. Does the 
screen give a picture? Click on the correct answer: YES / 
NO) and showing you examples (e.g. Measure test-point I7 
and click on the correct oscillogram you see on the 
oscilloscope). You can answer by clicking on a link (e.g. 
text or a waveform picture) that will bring you to the next 
step in the faultfinding process.

By a combination of automatic diagnostics and an interactive 
question / answer procedure, ComPair will enable you to find 
most problems in a fast and effective way.
 
Beside fault finding, ComPair provides some additional 
features like:
•

Up- or downloading of pre-sets.

•

Managing of pre-set lists.

•

Emulation of the Dealer Service Tool (DST).

•

If both ComPair and SearchMan (Electronic Service 
Manual) are installed, all the schematics and the PWBs of 
the set are available by clicking on the appropriate 
hyperlink. Example: Measure the DC-voltage on capacitor 
C2568 (Schematic/Panel) at the Mono-carrier. 
–

Click on the 'Panel' hyperlink to automatically show the 
PWB with a highlighted capacitor C2568. 

–

Click on the 'Schematic' hyperlink to automatically 
show the position of the highlighted capacitor.

5.4.3

How To Connect ComPair

1.

First install the ComPair Browser software (see the Quick 
Reference Card for installation instructions).

2.

Connect the RS232 interface cable between a free serial 
(COM) port of your PC and the PC connector (marked with 
“PC”) of the ComPair interface.