SWITCH AND TRIGGER
31
DCS-1600
5-1 Inspecting power switch and variable speed switch
[Disassembling]
1. Separate motor cover. (Refer to Section 4-5)
2. Remove power switch (A) from motor cover put-
ting flat head screw driver or suitable tool between
power switch (A) and motor cover as shown.
3. Disconnect power switch (A) and variable speed
switch (B) from wire harness.
[Inspecting power switch]
4. Inspect power switch (A) as follows. If the switch
(A) is not as follows, replace with new one.
(1) Inspection of electrical contact
Connect one probe of multimeter to terminal “1”
of power switch (A). Connect the other probe to
terminal “2” .
When pressing power switch (A), multimeter
should show that the circuit has continuity.(Elec-
trical current can flow between terminal “1” and “2”.)
When not pressing power switch (A), multime-
ter should indicate infinite resistance.(Electrical
current can not flow between terminal “1” and
“2”.)
(2) Inspection of short circuit
Connect one probe of multimeter to terminal “2”
of power switch (A). Connect the other probe to
terminal “3”.Multimeter should indicate infinite
resistance.(Electrical current can not flow be-
tween terminal “2” and “3”.)
(3) Inspection of LED using LED tester
NOTE:
If LED tester is not available, go to the
next page.
NOTE:
When inspecting LED, be sure not to
apply electric current more than 150 mA to
LED. It can cause damage to the LED in power
switch.
Connect positive (+) lead of LED tester (C) to
terminal “3” on power switch. Connect nega-
tive (-) lead of LED tester (C) to terminal “6” on
power switch.
Apply electrical current of 10 - 50 mA. Power
indicator LED (D) should light up.
1 2 3 4 5 6
Terminal position
A
A
B
C
D
