Service manual

SERVICE MANUAL
ENGLISH
Adnity
TM
17 ST, 20 ST, 20 D, X 20 D, X 20 C, X 24 D 9096982000(1)2007-02
53
DRIVE SYSTEM
TROUBLESHOOTING (Continues)
DRIVE SYSTEM ELECTRONIC BOARD DIAGNOSTIC TABLE
No. of ashes (*) Meaning Action
1
Drive system/brush enabling
microswitch closed when starting the
machine
Check the microswitch adjustment
2 Faulty speed potentiometer Check both speed potentiometers
3 Faulty speed potentiometer Check both speed potentiometers
4
Speed potentiometer off neutral when
starting the machine
Check the speed potentiometer adjustment
5 Thermal protection Check the drive system motor electrical input
6 Faulty drive system electronic board Replace the drive system electronic board
7 Overcurrent output
Check the drive system motor electrical input; if the electrical
input is normal, replace the drive system electronic board
8 Missing power connection
Check the drive system fuse and the drive system electronic
board wiring harness; if the fuse and the wiring harness are
normal, replace the drive system electronic board
9 Low battery voltage Charge the batteries
10 High battery voltage Check the batteries
11 Overload output Check the drive system motor electrical input
12 (Not applicable) --
13 Ignition key wrong sequence
Check for false contacts in the ignition key – function
electronic board – drive system electronic board circuit
(orange cables)
14 Software error Replace the drive system electronic board
(*) Flashing of led (A) of the drive system electronic board (B)
A
B
S301565A