Troubleshooting Of The Keypad; Troubleshooting The Control Unit Pmdc - 136 Lihd50; Troubleshooting Of The Control Unit Pmdc - 536Lihd60X/520Ihd60, 536Lihd70X/520Ihd70 - Husqvarna 136LiHD50 Workshop Manual

M1
1 2 3 4 5 6

8.3 Troubleshooting of the keypad

Measure pin 1-10 on the FPC on top of the connector.
1 2 3 4 5 6 7 8 9 10
The measuring points are shown in the diagram.
1. Switch 1: On/Off
2. Switch 2: SavE
3. Switch 3: Pivoting (option)
4. Supply
5. LED 1, Green: On/Off
6. LED 2, Green: save
7. Supply
8. LED 3, Red: Fault/optional chain brake
9. LED 4, Green: Pivoting (option)
10. Supply
1
2
3
4
5
6
7
8
9
10
34 - Troubleshooting of the electrical
system
M
B-
B-
B+
SW 1
SW 2
SW 3
LED 1
LED 2
LED 3
LED 4
8.4 Troubleshooting the control unit PMDC
- 136 LiHD50
Make sure that the blade terminals and related wires are
not bent or damaged.
(A) 6.3x0.8 mm M- (Black wire)
(B) 6.3x0.8 mm M+ (Red wire)
(C) 6.3x0.8 mm PCB + (Yellow wire)
(D) 6.3x0.8 mm PCB 0V (Black wire)
(E) 4.8x0.8 mm Shutdown (Blue wire)
A
C
D
8.5 Troubleshooting of the control unit
PMDC - 536LiHD60X/520iHD60,
536LiHD70X/520iHD70
Make sure that the blade terminals and wires are not
bent or damaged.
(A and B) 2.8 mm blade terminal to hand guard, power
switch (black wires).
(C) Battery communication (red, black and blue wires).
(D) Power supply (red wire). Uses the same connector
as 0V.
(E) OV Supply (black wire). Uses the same connector as
POWER.
(F) Motor + supply (gray wire). Uses the same connector
as Motor (-).
(G) Motor - supply (black wire). Uses the same
connector as (+).
A
B
C DE F G
B
E
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