Kenwood KSC-25 User manual

© 2002-2 PRINTED IN JAPAN
B51-8626-00 (N)1509
RAPID CHARGER
KSC-25
SERVICE MANUAL
Cabinet (Upper)
(A02-3655-08)
AC adapter (120V AC 60Hz)
(W08-0942-05)
Relay terminal
(E23-1190-08) x 5
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
This KSC-25 service manual is the revised edition of the
KSC-25 information in the TK-2140 (B51-8602-00) and TK-
3140 (B51-8603-00) service manual.

2
Power on (LED : off)
No output power initialization
Are
output terminals
shorted?
Output release power
Vt : 4.7 → 3.2~3.5V
Power release
Yes
Yes
P. S .
P. S .
P. S .
Yes
Yes
Does T contact?
No
Does S contact?
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
No
No
No
–5°C+2°C,–1°C ≤T
≤47°C+2°C,–1°C
Is the
battery abnormal?
(Shorted)
Is the
each terminal to short
another terminal
No touch
effect in each terminal
No
No
No
Yes
Yes
Yes
Is Li-ion? YesNo
Fast charge
(LED color : Red) 1200mA±5%
Ni-Cd, Ni-MH : Constant current charging
Not sensing for 4min
Vmin ≤4.8V±0.1V
Vmax ≥10.8V±0.1V
Timer ≥512sec
Timer ≥256sec
–96mV ≤–∆V ≤–72mV
T ≥55°C±4°C
Timer ≥120min
+12min, –10min
When battery
voltage is 8.9V+0.1V, –0V or
more, ∆V ≤0
∆V ≤0
After 30min
from starting fast charging
∆V/12min ≥
282mV/12min
Timer ≥128sec
Trickle charging
120~160mA
Yes
Yes
Yes
Yes
Yes
Yes Yes
Yes Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No No
No
No
No
No
No
No
Yes
No
No
No No
No
Fast charge (LED color : Red)
Li-ion : Constant current & constant voltage charging
CC mode : 945mA±5%, CV mode : 8.4V+0%, –2%
Not sensing for 4min
Vmin ≤4.8V±0.1V Trickle charging
120~160mA
No
V terminal ≥8.85V
No
T ≥55°C±4°C
No
Timer ≥180min
+18min, –10min
Timer ≥180min
+18min, –10min
Vs ≥3.29V±0.1V
(V = 7.9V)
Red flash
I = 0mA
No
No
Total ≥10H timer
Yes
Charging current
≤100±20mA
Charging current off
(I = 0mA)
Yes
LED color : Red flash
LED color : Red
Red LED flash Abnormal
reset?
Yes
No
Total timer ≥10H
Yes
No
LED color : Green
Trickle 30~90mA
Charge (LED color : Green)
Cut-off
LED color : Green
CHARGER FLOW CHART
KSC-25

3
RG
JK1
DC JACK P1 D6
M5M6
C26
C8
D5
C16
JK7
JK10
R15
R20
D4
JK1
C7 +
+
+
+
++ST–
Q2
BCE
JK2
D2
D3
L1
R19
JK3
JK6
R48
C19
JK5
JK4
R14
R47
JK8
JK9
R24
R43
C14
C2
C18
R44 Y1
C4
C5
R23
U2
1
8
9
16
U1
C1
JK12
JK11
R27
R29
LED1
U3
116
89
M4
M3
J05
R11
B4
R1
C20
R17
C6
B13
R12
B12
J02
J17
B11
C36
C38
C33
C37
B22
R8
Q1
R4 R6
J01
C30 C21
C22
R7
R30
R5
R34
U4
1
78
14
R32 R33
R45
R31
J12
J08
J09
J13
J10
J11
B16
C31
R26
Q3
D1
R3
R2
B8
B18
C11
C27
R46
R37
R36
R38
R42
B17
C24
B7
B6
B9
B19
U5
1
45
8
B20
B21
R35
C13
R39
R16
R13
R18
R25
C9
C25
R21
U6
B10
C3
R49
J06
J07
C10
R22 Q4
J03
R28
C35
C34
C29
R10
R9
R41 C23
C17
J14
B14
B15
C12
J16
J15
R40
C15
C32
B3
B1
B2 C28
J04
PC BOARD VIEWS
CHARGER UNIT (W02-3641-08) Component side view
CHARGER UNIT (W02-3641-08) Foil side view
KSC-25

R24
8.87K
R23 20K
Vcc
Vcc
Vcc
B13
D6
P1
JK1
DC
JACK
1
2
LED1
(G) (R)
1
2
3
4
5
11
8
97
564
10 13
15
12
1315
14
16
12
3
12
11
71
2
6
3
4
10
98
5
B11
B12
C38
471P
C37
471P
B22
B16
R30
R32
100K
R33
11K
C31 102P
C14
4.7 16V
R34
100K
R36
200K
R38
100K
R35 20K
R37 1K
R41 7.15K
R20 22K
R42
7.15K
C18
101P
C19
104P
C16
104P
R47
15K
R46
4.3K
R48
47K
47K
C35
471P
C34
471P
R8
200
R7
200
J09 0
R26
R28
10K
Q2
R11
R12 470
R22 39K
R21
47K
R25 10K
R27 10K
R29 1.5K
2.7K
C10 102P
C13 104P
C24 102P
C3 104P
R5 10K
R6 10K
470 10V
470 25V
C2
C1
C22
Y1
6MHZ
C5
20P
U6
C30
102P C20 102P
C21 102P
C29 102P
102P
C33
471P
C4 20P
C23 102P
B8
D1
R3
470
B9
R2 4.7K
R13
3K
R16
3K
R14
100K
R18
100K
R17 10K
R19 470
J06 0
J02
0
J07 0
D4
B1
B3
B2
B4
D5
C32
C26 102P
C8 104P
C7
220 16V
D2
D3
200
R15 0.1
C6
103P
C9 103P
C25
102P
C29
102P
C28
102P
C11
104P
L1
330µ
2
13
16
14
C36
471P
R49
120
U3
Q4
/CHBVDD
XO/R
XI
VSS
U2
/CVB
ICTRL1
ICTRL2
SCTRL PER
PER
B15
C12
101P
B14 B20
B18
C17 101P
B17
B19
B21
J12 0
R44 5.1K
J13 0
J14 0
J16 0
J15 0
R31 300K
2
J08
0
Vcc
Vcc
Vcc
/ICHG
BTYPE
BATB
/FAST
/FULL CTRL
TSB
5
4
+
–
U4A
+
13
6
7
1
5
11
10
Q3
+
+
+
–
–
–
+
–
Vcc
Vcc
U4D J11 0
C15
104P
J10 0
R43 10K
R45 10K
R39 1K
R40
100K
+
U5B
U4B
U4C
6
7
9
8
14
B10
R1 4.7K
B7
B6
+
+
U1
R4 6.8K
R9
47K
R10
47K
Q1
3
2
4
8+
–
U5A
Vcc
+ : Ni-MH, Li-ion
+ : Ni-Cd
T : Terminal for detection temperature
S : Terminal for distinction of battery
–: Ground terminal
Q1,3 : 2SA2712
Q2 : 2SA1757 or 2SA1469
Q4 : PK7002
U1 : PJ431
U2 : AMC-04
U3 : TL494 or UPC494C
U4 : LM339 or BA10339F
U5 : BA10393
U6 : T600D
D1 : RLS4148N
D2~5 : SB140
D6 : SB240
LED1 : M059AGW-A-K
SCHEMATIC DIAGRAM
4
KSC-25

KSC-25
BATTERY PACK
KNB-24L (Li-ion Battery Pack : 1400mAh)
■External View
KNB-25A (Ni-Cd Battery Pack : 1200mAh)
■External View
KNB-26N (Ni-MH Battery Pack : 2000mAh)
■External View
5
ST
S
1.8M
DISCHARGING TERMINALS
CHARGING TERMINALS
S
S
T
560k
DISCHARGING TERMINALS
CHARGING TERMINALS
S
S
T
220k
DISCHARGING TERMINALS
CHARGING TERMINALS
■Schematic Diagram ■Schematic Diagram
■Schematic Diagram

KENWOOD CORPORATION
14-6, Dogenzaka 1-chome, Shibuya-ku, Tokyo 150-8501, Japan
KENWOOD SERVICE CORPORATION
P.O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA 90801-5745, U.S.A.
KENWOOD ELECTRONICS CANADA INC.
6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8
KENWOOD ELECTRONICS DEUTSCHLAND GMBH
Rembrücker Str. 15, 63150 Heusenstamm, Germany
KENWOOD ELECTRONICS BELGIUM N.V.
Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium
KENWOOD ELECTRONICS FRANCE S.A.
13, Boulevard Ney, 75018 Paris, France
KENWOOD ELECTRONICS U.K. LIMITED
KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB United Kingdom
KENWOOD ELECTRONICS EUROPE B.V.
Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands
KENWOOD ELECTRONICS ITALIA S.p.A.
Via G. Sirtori, 7/9 20129 Milano, Italy
KENWOOD IBERICA S.A.
Bolivia, 239-08020 Barcelona, Spain
KENWOOD ELECTRONICS AUSTRALIA PTY. LTD.
(A.C.N. 001 499 074)
16 Giffnock Avenue, Centrecourt Estate, North Ryde, N.S.W. 2113 Australia
KENWOOD ELECTRONICS (HONG KONG) LTD.
Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road, Kwai Fong, N.T., Hong Kong
KENWOOD ELECTRONICS TECHNOLOGIES(S) PTE LTD.
Sales Marketing Division
1 Ang Mo Kio Street 63, Singapore 569110
KSC-25