Kenwood ksc-25 User Manual
RAPID CHARGER
KSC-25
SERVICE MANUAL
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.
© 2002-2 PRINTED IN JAPAN
B51-8626-00 (N) 1509
AC adapter (120V AC 60Hz)
(W08-0942-05)
Relay terminal
(E23-1190-08) x 5
Badge
(B43-1141-08)
Cabinet (Upper)
(A02-3655-08)
Ref. No. Address
New parts
PARTS LIST
✽ New Parts.
Parts No. Description
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
Destination
KSC-25
LED color : Red
Power release after LED
on 1sec, only pre-charge
CV 8.4V 1 time for 1.5 second
Ni-MH, Ni-Cd Vs : 1.2V → 0V
Li-ion Vs : 1.2V → 3.2~3.5V
Vt : 4.7 → 3.2~3.5V
CHARGER FLOW CHART
Power on (LED : off)
No output power initialization
P. S .
P. S .
P. S .
Are
output terminals
shorted?
No
Does T contact?
Yes
Output release power
Does S contact?
Yes
Yes
No
No
Red LED flash
Yes
Abnormal
reset?
No
Vmin ≤ 4.8V±0.1V
No
Fast charge
(LED color : Red) 1200mA±5%
Ni-Cd, Ni-MH : Constant current charging
Not sensing for 4min
Vmax ≥ 10.8V±0.1V
No
When battery
voltage is 8.9V+0.1V, –0V or
more, ∆V ≤ 0
No
After 30min
from starting fast charging
∆V/12min ≥
282mV/12min
No
–96mV ≤ –∆V ≤ –72mV
No
T ≥ 55°C±4°C
No
No
Timer ≥ 120min
+12min, –10min
Yes
Yes
Trickle charging
120~160mA
Yes
Yes
Yes
Yes
Yes
Timer ≥ 512sec
No
∆V ≤ 0
No No
Timer ≥ 128sec
No
–5°C+2°C,–1°C ≤ T
≤ 47°C+2°C,–1°C
Yes
Power release
Is the
battery abnormal?
(Shorted)
No
Is the
each terminal to short
another terminal
No
No touch
effect in each terminal
No
Is Li-ion?
Li-ion : Constant current & constant voltage charging
CC mode : 945mA±5%, CV mode : 8.4V+0%, –2%
Yes
Yes Yes
Timer ≥ 256sec
Yes
No
Yes
Yes
Yes
YesNo
Vmin ≤ 4.8V±0.1V
Fast charge (LED color : Red)
Not sensing for 4min
V terminal ≥ 8.85V
T ≥ 55°C±4°C
Timer ≥ 180min
+18min, –10min
Total ≥ 10H timer
No
Charging current
≤ 100±20mA
Charging current off
(I = 0mA)
LED color : Red flash
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes Yes
Yes
Trickle charging
120~160mA
Timer ≥ 180min
+18min, –10min
Yes
Vs ≥ 3.29V±0.1V
(V = 7.9V)
No
Red flash
I = 0mA
No
Trickle 30~90mA
Charge (LED color : Green)
No
Total timer ≥ 10H
Yes
Cut-off
LED color : Green
2
LED color : Green
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