Introduction - TC Electronic G-Force Service Manual

Introduction

The purpose of this manual is to support technicians in repairing the G-Force
The manual begins with a Quick Trouble Shooting table. Here, hints, advices and
possible problems are described.
If the problem is more serious, the next step is to use the Built-in Test Program.
With this program the problem can often be narrowed down to a specific section,
channel or even component.
The next section consist of disassembly and exchange procedures. Please be aware
of warranty rights before disassembling. See the warranty card.
The Block diagram for the signal flow in the G-Force shows the order of all the
effects.
Circuit description is a brief description of the circuits on the different boards.
In a table the Power On Sequence is described step by step and certain test points
are referred to.
The Power On Sequence is followed by LED error codes and Jumper settings.
Software Changes describes the changes from older software versions to newer
versions.
Appendix contains Schematics, Part lists, PCB Layouts and service notes.
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TC Electronic A/S
Schematics start with a main sheet, where sub sheets are shown as blocks. Even
sub sheets might have sub sheets. In the Schematics some connections have label
names to help the reader. If a label name is framed, it means that it is "connected"
to another sheet. Label names followed by the symbol "*" mean that the signal is
active low, i.e. RESET*: the reset function takes place when the signal is low.
This service manual does not contain schematics for the power supply module,
because any attempt to repair the power supply module must be completed with
some safety tests such as high voltage and EMC tests. Hence, it is strongly
recommended that the entire power supply module is replaced in case of
malfunction.
Part lists contain a column called TCcode. Use this code when ordering spare
parts. If the TCcode field is empty; it means the component cannot be ordered
separately.
The coordinates in the column Pos. refer to the PCB layout page. The column
named Page refers to page no. in the schematics. In column comments a short
explanation of the function is stated. For some components, alternative types are
mentioned.
PCB layouts are made as gatefolds (fold-out page).
Finally appendix contains a list for mechanical parts.
G-Force Service manual page 3