Ch 6 page 5
ELECTRICAL SYSTEM
SHOP MANUAL
Troubleshooting, what to do
1. Description
At the circuit drawing: see how the current flows from the power supply through the other
different components or connection points until you find a component or connection point which can
cause the malfunction.
2 Always check alarm and warning description in display first
Allways check out the fuse. Do remember that a components ground connection must be of the same
quality as the components power supply!
See if the connection of the electrical cables are according to the circuit drawing.
See if the component is working according to its specifications.
The electrical documentation consists of three different types of documents:
map, circuit drawings and a cross reference list.
Each document includes a different quantity of component numbers.
Component numbers (abbreviation: Comp.no.)
Each electrical component got its own private component number (Pos)
The component number is the same for the Shop Manual as for the Parts Catalogue.
Circuit drawings:
A circuit drawing shows the current flow from the power supply through the wiring, fuses, switch, different elec-
trical components and further on to the ground connection point.
Map
Map are an figure drawings who show place on machine where the component is located
Reference list
The reference list are an list where the Pos number are listed up. There also an reference to location on map
and Circuit drawing.
LCD display
When using the Display, diagnostic function there should be easy to find component who can make the
malfunction.
Look at the Operation & Maintenance manual for more detailed description for the LCD display
How to use the electrical documentation
NOTE
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