Troubleshooting Of The Electrical System - Stiga T 102 Series Workshop Manual

WORKSHOP MANUAL
T...102/122 - TC...102/122
Validity
General informations
In the following some of the problems connected
to the malfunctioning of the electrical system are
shown, with their probable cause and the reme­
dial action to be taken.
Should the problem continue after the appro­
priate checks, seek assistance from your lo cal
Service Centre.
Related topics
[ 7.2] Ttable for the cutting in of the safety de-
vices
[ 7.3] Safety microswitches operation check
[ 7.6] Starter relay operation check
[ 7.21] Recharge circuit check
[ 7.22] Maintenance of the sealed battery
Map of functional units
TROUBLESHOOTING OF THE ELECTRICAL
SYSTEM
PROBLEM
1. Activation of the self-re-
setting protection 1) ....
Battery terminal crossed
a) ... on inserting the key in
position «ON»
Short circuit to earth
Sulphated battery (it no longer ac-
cepts recharging)
b) ... in position «START»
Faulty or wet electronic card
or after a few seconds use,
following an attempt
at starting with outside
Disconnected or missing battery
means:
Battery terminals corroded or with
poor contact
Poor or missing earth contact on the
charge regulator
c) ... after several minutes' Overvoltage from a malfunction in
the regulator
use:
Battery disconnected or faulty dur-
ing use
The battery is not supplying the card
2. The dashboard remains
off with the key in posi- Battery or card not earthed to frame
tion «ON»
10 A fuse blown
Battery terminal crossed
WARNING! The self­setting guard reaches very high temperatures (around 180 °C) which are to be consid­
ered normal. Similarly, there might be some smoke inside the box which is due to the overheating of the powder
inside. Do not touch this component of the circuit board until it has cooled down.
The cutting in of the self-resetting protection of the electronic card is signalled by a beep, except in cases where the
1)
battery is missing, flat or with the terminal crossed. The signal stops when the key is returned to position «OFF»; then
wait a few seconds before returning to position «ON».
IMPORTANT Faulty electronic cards must always be replaced without trying to repair them or re place single
CHAPTER REVISION
7.1 0
CAUSE
Check the battery connections
Check the connectors and wiring of the
microswitches
Replace the battery
Check and dry with low pressure tepid
air (hair-dryer)
Reconnect the battery. It must always be
connected
Check and clean the connections
Check the earth connections and the
screws fastening the regulator
Check the recharge circuit
Check the battery or wiring
Check the connection cables
Check the battery's condition
Check and put right
Replace fuse (10 A)
Check connections
components.
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