Service Modes, Error Codes And Fault Finding
Test Points
The chassis is equipped with test points printed on the circuit board assemblies. These test points refer to the functional
blocks:
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 Mode (when this mode is not present, set all controls to 50% and volume select channel 3).
•
Service Default Mode.
•
Video: color bar signal.
•
Audio: 3 kHz left, 1 kHz right.
Service Modes
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 dealer and customer.
Note:
Some L8 and M8 chassis sets use a software version that does not contain the Service Modes (see table). In this
case, use the special Factory Mode Remote Control. This can be ordered by service code 4835 310 57511. Complete
instructions are included. This remote control will place the TV in the Factory Mode and allow access to all adjustments that
a normal Service Mode contains (including setting Option Bytes). Error codes will not be available.
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 L8 and M8 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 also acceptable (see also
ComPair
Содержание 7603 series
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Страница 55: ...Circuit Description Block Diagram ...
Страница 56: ...Test point overview Main Panel Test point overview CRT Panel ...
Страница 68: ...Power Supply Figure 1 ...
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Страница 91: ...24M8 7603 ...
Страница 92: ...24M8 7603 ...
Страница 93: ...24M8 7603 ...
Страница 94: ...24M8 7603 ...
Страница 95: ...All Models 7603 Chassis Overview ...
Страница 96: ...All Models 7603 Power Supply Diagram A1 ...
Страница 97: ...All Models 7603 Line Deflection Diagram A2 ...
Страница 98: ...All Models 7603 Frame Deflection Diagram A3 ...
Страница 99: ...All Models 7603 Tuner IF Diagram A4 ...
Страница 100: ...All Models 7603 Video IF And Sound IF Diagram A5 ...
Страница 101: ...All Models 7603 Synchronization Diagram A6 ...
Страница 102: ...All Models 7603 Control Diagram A7 ...
Страница 103: ...All Models 7603 Audio Amplifier Diagram A8 ...
Страница 104: ...All Models 7603 BTSC Stereo SAP Decoder Diagram A9 ...
Страница 105: ...All Models 7603 Audio Video Source Switching Diagram A10 ...
Страница 106: ...All Models 7603 BTSC NDBX Stereo Decoder Diagram A11 ...
Страница 107: ...All Models 7603 Front I O Control Headphone Diagram A12 ...
Страница 108: ...All Models 7603 Rear I O Cinch Diagram A13 ...
Страница 109: ...All Models 7603 PIP Interface Diagram A16 ...
Страница 110: ...All Models 7603 CRT Panel Diagram B1 ...
Страница 111: ...All Models 7603 Side AV Headphone Panel Diagram C ...
Страница 112: ...All Models 7603 Side AV Headphone Panel Diagram E1 ...
Страница 113: ...All Models 7603 PIP Panel Diagram P ...
Страница 114: ...All Models 7603 Top Control Panel Diagram T ...
Страница 115: ...All Models 7603 SCAVEM Diagram B2 ...
Страница 116: ...All Models 7603 PCB Large Signal panel component side ...
Страница 117: ...All Models 7603 PCB Large Signal panel copper side ...
Страница 118: ...All Models 7603 PCB CRT panel component side ...
Страница 119: ...All Models 7603 PCB CRT panel copper side ...
Страница 120: ...All Models 7603 PCB Side AV Panel component side ...
Страница 121: ...All Models 7603 PCB Side AV Headphone Panel component side ...
Страница 122: ...All Models 7603 PCB PIP Panel component side ...
Страница 123: ...All Models 7603 PCB PIP panel copper side ...
Страница 124: ...All Models 7603 PCB Top control round component side ...
Страница 125: ...All Models 7603 PCB Top control round copper side ...
Страница 126: ...All Models 7603 PCB Top control oval component side ...
Страница 127: ...All Models 7603 PCB Top control oval copper side ...
Страница 128: ...MAIN CABINET EXPLODED VIEW ...