Echo shindaiwa DCS-1600 Service Manual page 17

DCS-1600
2-2 Troubleshooting chart (Continued)
Troubleshooting "STEP7" ~Checking other failure~
Start
A
B
Yes
C D
No
F
H
K J
TROUBLESHOOTING
No
E
Yes
No
G
Yes
No
Yes
(11)
From page 16
WARNING
Verify the safety of the surroundings when
doing Troubleshooting STEP7. The machine
may run unexpectedly.
A: Install battery on the unit correctly.
B: Release chain brake and press power switch
without holding trigger lever. And then hold trigger
lever.
C: Motor does not run and LED indicator is lighting.
D: Inspect the unit as follows:
1) Each connection between terminals is secure.
2) Each connection of terminal housing and lead is
secure.
3) Electrical current can flow through each lead.
4) There are no short curcuits.
E: Repair or replace defective object(s) as needed.
F: Inspect variable speed switch as follows: (Refer to
Section 5-1)
1) Electrical current can flow between terminal "1" and
"4" when pressing the switch.
2) Electrical current can not flow between terminal "1"
and "4" when not pressing the switch.
G: Replace the variable speed switch with new one.
(Refer to Section 5-2).
H: Inspect resistance between terminal "1" and "2" of
variable speed switch as follows: (Refer to Section
5-1)
1) Its value is 100 Ω or less when pressing the switch.
2) Its value is between 70 kΩ and 130 kΩ when not
pressing the switch.
J: Replace control board with new one. (Refer to Section
6-2)
K: Go to page 16 (10).
15
DANGER