Philips L04A AB, Service Manual, Page: 15 / 90

Service Modes, Error Codes and Fault Finding EN 15 L04A AB 5.
5. Service Modes, Error Codes and Fault Finding
Index of this chapter:
5.1 Test Points
5.2 Service Modes
5.3 Problems and Solving Tips Related to CSM
5.4 ComPair
5.5 Error Codes
5.6 The Blinking LED Procedure
5.7 Protections
5.8 Fault Finding and 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
Note: Not all listed test points are measured.
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) is 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).
Table 5-2 Software cluster overview
Test point Circuit Diagram
I511, I531, I513, I519, F508, I516, I533,
F552, I565, I545, F563, F561, F573,
F536, F537, F564 Power supply A1
F402, F401, F412, F468, F467, F418,
F414, F460, F461, I468, F452, F453,
F455, I462, F458, F459 Line Deflection A2
I001, I002, F003, F004 Tuner IF A3
F201, F203, F205 Hercules A4
N.A Features Connectivities A5
I951, I952, F952, F955 Audio Amplifier A7
F692 Front Control A9
F331, F332, F334, F333, F338, F339,
F341, F354, F353 CRT Panel B1
F361, F362, F381, F382 ECO Scavem B2
I206, I208, I209, I204, I201, I202 Trident interface board TI
F001, F002, F003, F004 DPTV T1
F005, F006, F007, F008 YpbPr input T2
F009, F010, F011 ADC T3
N.A SDRAM T4
F047,F012,F022,F019,F023,F024,
F048,F038,F039,F040,F025,F020,
F021,F013,F014,F026,F027,F016,
F015,F017,F018,F041,F049,F042,
F043,F050,F044,F045,F046 Display & Processing T5
SW Cluster SW name Hercules Diversity 12 NC Checksum ROM Sizs Special Features
L4TAN1 L04AT1 x.y TDA12010H 935274424557 0472BA5B 128K CC.MULTISND
Abbreviations: CC = Closed CaptionNONTXT= No teletextMULTISND=2CS BG, 2CS D/K, FM/FM (5.5-5.74) (B/G),
FM/FM (6.5-6.74) (China), NICAM B/G (5.5-5.85), NICAM D/K (6.5-5.85) (Hung), NICAM I (6.0-6.52)
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