Philips L01.1L AC, Service Manual

Service Modes, Error Codes, and Fault Finding

EN 20

L01.1L AC

5.

5.

Service Modes, Error Codes, and Fault Finding

Index:
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.

5.1

Test Points

The chassis is equipped with test points printed on the circuit 
board assemblies. These test points refer to the functional 
blocks:

Table 5-1 Test Point Overview

The numbering is in a logical sequence for diagnostics. Always 
start diagnosing within a functional block in the sequence of the 
relevant test points for that block. 
 
Perform measurements under the following conditions:
•

Service Default Alignment Mode.

•

Video: color bar signal.

•

Audio: 3 kHz left, 1 kHz right.

5.2

Service Modes

Service Default Alignment Mode (SDAM) offers several 
features for the service technician, while the Customer Service 
Mode (CSM) is used for communication between dealer and 
customer.
There is also the option of using ComPair, a hardware interface 
between a computer (see requirements) and the TV chassis.  It 
offers the ability of structured trouble shooting, error code 
reading and software version readout for all chassis. 
Requirements: To run ComPair on a computer (laptop or 
desktop) requires, as a minimum, a 486 processor, Windows 
3.1 and a CD-ROM drive.  A Pentium Processor and Windows 
95/98 are however preferred (see also paragraph 5.4).

Table 5-2 SW Cluster

5.2.1

Service Default Alignment Mode (SDAM)

Purpose
•

To change option settings.

•

To create a predefined setting to get the same 
measurement results as given in this manual.

•

To display / clear the error code buffer. 

•

To override SW protections.

•

To perform alignments.

•

To start the blinking LED procedure.

Specifications
•

Tuning frequency: 61.25 MHz (channel 3) for NTSC-sets 
(LATAM).

•

Color system: PAL-M for LATAM BI/TRI/FOUR-NORMA.

•

All picture settings at 50 % (brightness, color contrast, 
hue).

•

Bass, treble and balance at 50 %; volume at 25 %. 

•

All service-unfriendly modes (if present) are disabled, like: 
–

(Sleep) timer, 

–

Child/parental lock, 

–

Blue mute, 

–

Hotel/hospitality mode

–

Auto switch-off (when no “IDENT” video signal is 
received for 15 minutes),

–

Skip / blank of non-favorite presets / channels,

–

Auto store of personal presets,

–

Auto user menu time-out.

•

Operation hours counter.

•

Software version.

•

Option settings.

•

Error buffer reading and erasing.

•

Software alignments.

How to enter SDAM
Use one of the following methods:
•

Use a standard customer RC-transmitter and key in the 
code 062596 directly followed by the “M” (menu) button or

•

Short jumper wires 9631 and 9641 on the mono carrier 
(see Fig. 8-1) and apply AC power. Then press the power 
button (remove the short after start-up).

•

Caution: Entering SDAM by shorten wires 9631 and 9641 
will override the +8V-protection. Do this only for a short 

TEST POINT CIRCUIT

DIAGRAM

A1-A2-A3-..

AUDIO PROCESSING 

A8,A9 / A11

C1-C2-C3-..

CONTROL

A7

F1-F2-F3-..

FRAME DRIVE & OUTPUT A3

I1-I2-I3-..

TUNER & IF

A4

L1-L2-L3-..

LINE DRIVE & OUTPUT

A2

P1-P2-P3-..

POWER SUPPLY

A1

S1-S2-S3-..

SYNCHRONISATION

A6

V1-V2-V3-..

VIDEO PROCESSING

A5,B1

SW Cluster Software

name

UOC type UOC Di-

versity

Special
Fea-
tures

L3LLS1

L01LS4 x.y TDA9599

(LS)

96K
ROM
Size

CC,
Stereo
dBx,
wide
screen ,
Dolby
EW

L3LLS2

L01LS5 x.y TDA9570

(LS)

55K
ROM
Size

CC,
Stereo
dBx

L3LLS3

L01LS3 x.y TDA9583

(LS)

64K
ROM
Size

CC,
Stereo
dBx,EW

L3LLN2

L01LN2 x.y TDA9570

(LS)

55K
ROM
Size

CC,
Stereo
non-
dBx 

Abbreviations in Software name: L = Latam, M = Mono,
N = Stereo non-dBx and S = Stereo dBx.