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TECHNICAL INFORMATION
Subject Change of Light Circuit
73027
April, 2005
(page 1 of 3)
For Models BDF430F, BTD123F
Country All countries
Description Light circuit has been changed for addition of afterglow function.
See illustration below.

Current New
Color index of lead wires' sheath Color index of lead wires' sheath
Black Black
End bell complete Red End bell complete Red
Orange Orange

LED circuit LED circuit

Switch Switch

Connector Connector

Part for
afterglow
Terminal function

Terminal

Interchangeability(I/C)
Item No. Current part Q'ty I/C New part Q'ty Note
Light Circuit Light Circuit
039 1 No 1 For BTD123F
631579-6 631624-7
Light Circuit Light Circuit
007 1 No 1 For BDF430F
631537-2 631630-2

Implementation
BDF430F: From serial No. 6435E (April, 2005)
BTD123F: From serial No. 2823E (April, 2005)
Assembling way of light circuit
1. Disconnect connector A, and then remove LED circuit B. (Refer to Fig. 1 and 2 in page 2.)
2. Separate insulated terminal C from switch. (Refer to Fig. 2 in page 2.)
3. Detach orange colored lead wire from the root of the insulated terminal C (Refer to Fig. 2 in page 2.)
4. Strip the orange colored lead wire D in 7mm or 8mm. (Refer to Fig. 2 in page 2.)
5. After clamping a stripped end of orange colored lead wire E of new type light circuit and the stripped lead wire D with
insulated terminal RBV1.25-3.5T (Part No. 654037-5), reassemble it to switch terminal. (Refer to Fig. 3 and 4 in page 3.)
6. Connect the connector Fa of the new type light circuit with the connector Fb of lead wire from switch as Fig 4 in page 3.
7. Set LED circuit G of the new type light circuit in place as Fig. 3 in page 3.
8. Install a part for afterglow function H into motor housing as Fig. 4 in page 3. And then fix housing R with housing L.
Operation check of a light with afterglow function
1. Check that the light turns on when pulling a trigger of switch.
2. Check that the light continues to illuminate for about 10 seconds after releasing the trigger.
73027
(page 2 of 3)
The current type cordless tool
Fig. 1

Red colored lead wire must be slack in this point.

Pin Boss LED circuit B

Insert two lead wires for LED circuit
into the bottom of lead wire holders.

Fig. 2
Route a block colored lead wire (between
FET Endbell complete and switch) to outside of the rib.
Endbell complete

DC
Motor

Rib
Lead wire (red) Switch
from Switch

Insulated terminal C

Hold the lead wires from Switch
and LED circuit securely with
these lead wire holders. Lead wire D
Insulated terminals should not
touch the boss.

Connector A

Terminal
73027
(page 3 of 3)
The new type cordless tool
Fig. 3

Red colored lead wire must be slack in this point.

Boss LED circuit G

Insert two lead wires for LED circuit
into the bottom of lead wire holders.

Lead wire E

Part for afterglow Fig. 4
function Route a block colored lead wire (between
FET Endbell complete and switch) to outside of the rib.
Endbell complete

DC
Motor

Lead wire (red) Rib
from Switch Switch

After clamping a stripped end of
orange colored lead wire E (Re:
Fig. 3) and the stripped lead wire D
Hold the lead wires from Switch (Re: Fig. 2) with insulated terminal
and LED circuit securely with RBV1.25-3.5T (Part No.654037-5),
these lead wire holders. reassemble it to switch.

Insulated terminals should not
Connector Fa touch the boss.
Connector Fb

Lead wires should not touch
connector Fa and Fb to avoid
Part for afterglow Terminal being pinched and damaged.
function H

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