Kenwood ksc-25 User Manual

RAPID CHARGER

KSC-25

SERVICE MANUAL

© 2002-2 PRINTED IN JAPAN B51-8626-00 (N) 1509

This KSC-25 service manual is the revised edition of the KSC-25 information in the TK-2140 (B51-8602-00) and TK3140 (B51-8603-00) service manual.

AC adapter (120V AC 60Hz)	Relay terminal	Cabinet (Upper)
(W08-0942-05)	(E23-1190-08) x 5	(A02-3655-08)

Badge (B43-1141-08)

PARTS LIST

						New Parts.
Ref. No.	Address	New parts	Parts No.	Description			Destination
			A02-3655-08	Cabinet	Upper
			A02-3656-08	Cabinet	Bottom
			B43-1141-08	Badge
			B62-1607-00	Instruction manual
			E03-0200-08	DC jack
			E23-1190-08	Relay terminal
			G13-1547-08	Cushion
			N80-2610-45	Screw
			W02-3641-08	Charger unit
			W08-0942-05	AC adapter	120VAC 60Hz		K

KSC-25

CHARGER FLOW CHART

				Power on (LED : off)
				No output power initialization
							Yes
				Are		Yes	Abnormal
				output terminals		Red LED flash
				shorted?			reset?
				No			No
Vt : 4.7 →	3.2~3.5V			P.S.		No
				Does T contact?
				Yes
LED color : Red				P.S.
Power release after LED				Output release power
on 1sec, only pre-charge
CV 8.4V 1 time for 1.5 second						No
				Does S contact?
Ni-MH, Ni-Cd Vs : 1.2V →			0V	P.S.
Li-ion Vs : 1.2V →		3.2~3.5V		Yes
				–5° C+2° C,–1° C ≤	T	No
				≤ 47° C+2° C,–1°	C
				Yes			LED color : Red flash
				Power release

Is the

Yes

battery abnormal?

(Shorted)

No

Is the

Yes

each terminal to short

another terminal

No

Yes

No touch

effect in each terminal

No

No

Yes

Is Li-ion?

Yes

Yes

Trickle charging

Trickle charging

Vmin ≤ 4.8V± 0.1V

120~160mA

Vmin ≤ 4.8V±

0.1V

120~160mA

No

No

Fast charge

Fast charge (LED color : Red)

Timer ≥ 180min

No

(LED color : Red) 1200mA± 5%

Li-ion : Constant current & constant voltage charging

Ni-Cd, Ni-MH : Constant current charging

CC mode : 945mA± 5%, CV mode : 8.4V+0%, –2%

+18min, –10min

Not sensing for 4min

Not sensing for 4min

Yes

Vmax ≥ 10.8V± 0.1V

Yes

V terminal ≥ 8.85V

Yes

No

No

When battery

Yes

Timer ≥

Yes

T ≥ 55° C± 4° C

Yes

voltage is 8.9V+0.1V, –0V or

512sec

more, ∆ V ≤ 0

No

No

No

Yes

Yes

Timer ≥ 180min

Vs ≥

3.29V± 0.1V

After 30min

Yes

Yes

Yes

+18min, –10min

(V = 7.9V)

from starting fast charging

∆ V ≤

0

Timer ≥

256sec

No

No

∆ V/12min ≥

282mV/12min

No

No

Yes

Total ≥ 10H timer

No

–96mV ≤

–∆ V ≤ –72mV

Yes

Timer ≥

128sec

Yes

No

Red flash

No

Charging current

I = 0mA

No

No

≤ 100± 20mA

T ≥

55° C± 4° C

Yes

Yes

Charging current off

No

(I = 0mA)

No

Timer ≥ 120min

+12min, –10min

Yes

Trickle 30~90mA

Charge (LED color : Green)

No

Total timer ≥ 10H

Yes

Cut-off

2

LED color : Green

LED color : Green