Echo shindaiwa DCS-1600 Service Manual page 11

DCS-1600
2-2 Troubleshooting chart (Continued)
Troubleshooting "STEP3" ~Checking power supply circuit~
Start
A
B
No
C
D
Yes
E
Yes
G
Yes
J
Yes
L
Yes
M
No
Step0 P
K: Replace the power switch with new one. (Refer to Section 2-2)
L: Does LED indicator of power switch light when electrical current flow between terminal "3" and "6" using
diode check function of degital multimeter? (Refer to Section 5-1)
M: Is there any short circuit in the following parts?
1) Between terminal "2" and "3" of power switch (Refer to Section 5-1)
2) Between terminal "1" and "3" of variable speed switch (Refer to Section 5-1)
3) Between terminal "4" and "5" of motor's 5-pin connector (Refer to Section 6-1)
N: Repair or replace defective object(s) as needed.
P: Replace the control board with new one.(Refer to Section 6-2)
TROUBLESHOOTING
No
F
Step2
No
H
No
K
No
Yes
N
WARNING
Verify the safety of the surroundings when
doing Troubleshooting STEP3. The machine
may run unexpectedly.
A: Install battery on the unit correctly.
B: Release chain brake and press power switch with-
out holding trigger lever.
C: Is LED indicator lighting or flashing?
D: Remove battery from the unit.
E: Is resistance between battery terminal (T) and (C-),
(T) and (D-) 20 kΩ or less when temperature of bat-
tery inside is 10°C or higher? (Refer to Section 9-4)
F: Go to "Step 2" to find cause of battery failure. After
passing Step2 then replace the battery to new one
and continue to diagnosis.
* Be sure to check Troubleshooting "Step2" before
installing new battery. If the unit has something
wrong, the battery can be damaged again.
G: 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.
H: Repair or replace defective objects as needed.
J: Inspect power switch as follows: (Refer to Section
5-1)
1) Electrical current can flow between terminal "1" and
"2" when pressing power switch.
2) Electrical current can not flow between terminal "1"
and "2" when not pressing power switch.
9
DANGER
*