Test Points; Service Modes, Error Codes, And Faultfinding - Philips L04E Service Manual

EN 8 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
Test point
F508, F535, F536, F537, F552, F561, F563,
F573, F664,I513, I518, I519, I524, I531, I533,
I546
F401, F412, F413, F414, F418, F452, F453,
F455, F456, F458, F459, F460, F461, I408,
I416, I417, I420, I462, I468
F003, F004, I001, I002
F201, F203, F205, F206
F240, F241, F242
F952, F955, I951, I952
F692
F331, F332, F333, F338, F339, F341, F351,
F353, F354
F361, F362, F381, F382
Perform measurements under the following conditions:
•
Television set in Service Default Alignment Mode.
•
Video input: Colour bar signal.
•
Audio input: 3 kHz left channel, 1 kHz right channel.
5.2
Service Modes
Service Default mode (SDM) & Service Alignment Mode (SAM)
offers several features for the service technician, while the
Customer Service Mode (CSM) & Digital Customer Service
Mode (DCSM) are used for communication between the call
centre and the customer.
This chassis also offers the option of using ComPair, a
hardware interface between a computer and the TV chassis. It
offers the abilities of structured troubleshooting, error code
reading, and software version readout for all these chassis.
Minimum requirements for ComPair: a Pentium processor, a
Windows OS, and a CD-ROM drive (see "ComPair" section).
L04E AB Service Modes, Error Codes, and Fault Finding
Circuit Diagram
Power supply A1
Line + Frame A2
Deflection
Tuner IF A3
Hercules A4
Features & A5
Connectivities
Audio Amplifier A7
Front Control A9
CRT Panel B1
ECO Scavem B2
Table 5-2 Software cluster overview
SW Clusters SW Version
L4LEF1 L04EF11.0
L4LEF2 L04EF21.0
L4LEF3 L04EF31.0
L4LEF4 L04EF41.0
L4LEF5 L04EF51.0
L4LEF6 L04EF61.0
L4LEF7 L04EF71.0
5.2.1
Service Default Mode (SDM)
Purpose
•
To create a predefined setting for measurements to be
made.
•
To override software protections.
•
To start the blinking LED procedure.
Specifications
•
Tuning frequency: 475.25 MHz.
•
Colour system: PAL/SECAM.
•
All picture settings at 50%
(brightness, colour contrast, hue).
•
Bass, treble and balance at 50 %; volume at 25 %.
•
All service-unfriendly modes (if present) are disabled. The
service unfriendly modes are:
–
Timer / Sleep timer.
–
Child / parental lock.
–
Blue mute.
–
Hotel / hospital mode.
–
Auto shut off (when no 'IDENT' video signal is received
for 15 minutes).
–
Skipping of non-favourite presets / channels.
–
Auto-storage of personal presets.
–
Auto user menu time-out.
–
Auto Volume Levelling (AVL).
How to activate
To activate SDM, use one of the following methods:
•
Press the following key sequence on the remote control
transmitter: '0 6 2 5 9 6' directly followed by the 'MENU'
button (do not allow the display to time out between entries
while keying the sequence).
•
Short jumper wires 9252 and 9275 on the family board (see
Fig. 8-1) and apply mains. Then press the power button
(remove the short after start-up).
Caution: activating SDM by shorting wires 9252 and 9275
will override the +8V-protection. Do this only for a short
period. When doing this, the service-technician must know
exactly what he is doing, as it could damage the television
set.
•
Or via ComPair (with the ComPair 'Tools', it should be
possible to activate SDM via the ComPair interface).
First Mask Remarks
TDA12020H1/N1B11 Western Europe
TDA12021H1/N1B11 Radio 4:3 set only.
TDA12020H1/N1B11 Eastern Europe
TDA12021H1/N1B11 Radio 4:3 set only.
TDA12020H1/N1B11 Western Europe
TDA12021H1/N1B11 PIP
TDA12020H1/N1B11 Eastern Europe
TDA12021H1/N1B11 PIP
TDA12020H1/N1B11 Western Europe
TDA12021H1/N1B11 Radio & PIP.
TDA12020H1/N1B11 Eastern Europe
TDA12021H1/N1B11 Radio & PIP.
TDA12020H1/N1B11 ICON UI