Handicare 1100 Quick Reference Manual page 46

Once we have established the problem is in the track
There is a sequence of testing that if done correctly will in the vast majority of cases will diagnose the
fault.
1. Test the batteries of the battery box - the
charger must be turned off or you will get
false results.
2. Test idle comms voltage at A31-2 (grey) and
A33-2 (black negative) - should be around 10v.
3. Put a call in - voltage should drop momentarily
then spike to around 26v - if not check 5
amp fuse.
If the 125 is putting out 26v (ish) - your done
with it - move on the 126EL track PCB.
Pretty much the only job of the 125 is to supply the 126EL with 26v.
The problem is in the track
Because we know the 125 is putting out 26v by defi nition the 126EL must be receiving it – if the
1.
grey comms wire was broken, in say the trailing cable then they wouldn't be able to 'talk' to each
other and the 126EL wouldn't be able to request the 26v, if the 126EL doesn't request the 26v
then the 125 wont put it out.
2. The next test is to check for voltage out at the motor A39 & A37 – put the probes over the pins
and put a call in – if 24v comes out of the 126EL then either the motor has failed or the wiring to it
so check all the motor connections and the small amount of accessible wiring you can get to.
3. If there is no voltage coming out of the motor terminals then you have 6 potential problems – test
them in sequence and you will fi nd the fault.
ENDSTOPS
S7 S8
A22 A23
+33V WHITE
0V BLACK-WHITE
CHARGE
BUSBARS
SAFETY
A A 2 2 6 6 1 _ 14
SLIDE TRACK
46
UNIT
BLUE
TRACK
BROWN
S18
BOTTOM
TOP
BLACK-WHITE
SAFETY
BLACK
S17
Quick Reference Guide
A29
A28
HAN 420
A30
A31
A34
A33
A35
WHITE
BLACK
BLACK
GREY
WHITE
A35
WHITE
BLACK
BLACK
GREY
WHITE
A36
BLACK-WHITE
BLACK
A38
A37
A39
A40
A41
S19
BLACK-WHITE
S20
GREY
BLACK-GREY
A32
1
A43
3
BATTERY BOX
P S U
33V
BATTERY BOX
PSU
3 3 V
S21
GAS STRUT
DETECTION
SWITCH