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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) (W08-0942-05) Relay terminal (E23-1190-08) x 5 Cabinet (Upper) (A02-3655-08)

Badge (B43-1141-08)

PARTS LIST
New Parts. Ref. No. Address New parts Parts No. A02-3655-08 A02-3656-08 B43-1141-08 B62-1607-00 E03-0200-08 E23-1190-08 G13-1547-08 N80-2610-45 W02-3641-08 W08-0942-05 Cabinet Cabinet Description Upper Bottom Destination

Badge Instruction manual DC jack Relay terminal Cushion Screw Charger unit AC adapter 120VAC 60Hz

K

KSC-25
CHARGER FLOW CHART
Power on (LED : off) No output power initialization Yes Are output terminals shorted? No Vt : 4.7 3.2~3.5V P.S. Does T contact? Yes 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 P.S. Yes P.S. Output release power No No Yes Red LED flash Abnormal reset? No

Does S contact?

­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 No Yes Trickle charging 120~160mA Is Li-ion?

No LED color : Red flash

Yes

Yes

Yes

Yes Yes

Vmin 4.8V±0.1V

Vmin 4.8V±0.1V 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

Trickle charging 120~160mA

No Fast charge (LED color : Red) 1200mA±5% Ni-Cd, Ni-MH : Constant current charging Not sensing for 4min

Timer 180min +18min, ­10min Yes

No

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

V terminal 8.85V No

Yes

Yes

Timer 512sec No

Yes

T 55°C±4°C No Timer 180min +18min, ­10min No Total 10H timer No No Charging current 100±20mA Yes Charging current off (I = 0mA)

Yes

Yes

Yes

V 0 No

Yes

Timer 256sec No

Yes

Vs 3.29V±0.1V (V = 7.9V) No

Yes

Yes

Yes

Timer 128sec No

Yes

Red flash I = 0mA

Yes

Trickle 30~90mA Charge (LED color : Green) No

Total timer 10H Yes Cut-off LED color : Green

2

LED color : Green

KSC-25

M6 M5 C26 C8 Q2
D4

C20

JK1 DC JACK P1 D6

J05 R11
B4

J04

B1

+ + S T ­ B C E JK2

JK1

D5

B2 C11 C27 R46
B8 R2 R1

B3

C28

C7 + M4 D2 D3 R19

C32 R42 B17
Q3

PC BOARD VIEWS

R3

D1

B18

CHARGER UNIT (W02-3641-08) Component side view

JK10

C19
JK7

C24

1 14

R26

R34

R15

C16

C14 + R44 M3
8 1

C18 Y1 C4 C5 R23
16

R41 R25 U6
B13

C2 +
U2

R7

U1

JK11 R27 + C1 R29 8 9 U3

B11

JK12

R12

J17 C38

J02

C10 R22

Q4

R28

C30

C35

Q1

R49

R8

C29

J03 LED1 RG

C33

J01

J06 J07
B12 C37 C36

R10 B10 C3

C34

R5 C21 C22 R6 R4

9

1

16

R21

R30

B22

R9

C31

C9 C25

B14

R31 R32

JK6

R47

CHARGER UNIT (W02-3641-08) Foil side view

JK9 R24 R43

R20

R14 R13

R33

JK8

7 8

U4

JK5

B9 B19 R16

C6 R17

R39 R18

J15 J16

J14

J08 J09

J12

C12

J13

B15

C17

R45

JK4

8 1

B16

R48

L1

5 4

U5

B7

R36

J11 J10

JK3

B6 R37

R38 C15 B20 R35 C13 B21

R40

C23

3

KSC-25

D2

D3

R13 3K

C32

C7

R11 B3 B2 4 5 B4 3

C6 103P

R16 3K

R19 470

C20 102P

B9

C8 104P

R2 4.7K

R14 100K

R12 470

R17 10K

B7

J06 0

J02 0

R18 100K

DC JACK 200

220 16V

C26 102P

C25 102P

C11 104P

B8

R3 470

11

C38 471P

B22

R1 4.7K 4 6 5 15

D1

C30

102P

R21 47K

R28

R22 39K

15 VDD /CHB 13

C10 102P

R26

C2

R4 6.8K /CVB ICTRL1 11 7 Vcc PER Q3 Vcc R39 1K 12 Vcc 16 R23 20K 120

R24 8.87K Q4

R5 10K

470 10V

C3 104P

C1

+

470 25V

C22

102P

C23 102P

C29 102P

C21 102P

R6 10K

C35 471P

R27 10K

U1

2.7K

+

B10

R49

10K

Q1

C24 102P

Vcc

B12

R25 10K

Vcc

ICTRL2 1 XO/R SCTRL

Y1 6MHZ

U6

J09 0

R32 100K

R30

C4 20P

47K

C5 20P

14 VSS U2 /ICHG 6

B16

J08 0 12 4 B14 +

­

C13 104P

R36 200K

2

U4A 3 5 B15 + R34 100K

R38 100K

2 XI C12 101P

R29 1.5K

C15 104P U4D 11 J11 0 + 13 ­ B20 10 J10 0

C14 4.7 16V

SCHEMATIC DIAGRAM

LED1

R33 11K

R41 7.15K

R31 300K 3

C31 102P

R35 20K

R37 1K

Vcc Vcc B18

C28 102P

Vcc U3

C37 471P

B11 12 14 B13

C36 471P

16

C9 103P

U5A 8 + 3 ­ 4 2 B6 8 2 J07 0

R40 100K

C29 102P

C33 471P

R7 200

/FAST BATB CTRL TSB B21 U4C 5 8 R44 5.1K 14 9 + ­ 8 J14 0 J16 0

C17

101P

R43 10K

R20 22K

R9 47K 10 4 U4B 6 ­ 1 + J12 0 7

R8 200

U5B 6 B19 7 ­ + 5 J13 0

B17

R42 7.15K

R10 47K 9 /FULL

C34 471P

C16 104P

C18 101P

R45 10K

C19 104P

R48 47K

J15 0

R46 4.3K

R47 15K

4
D4 PER Q2 R15 0.1 B1 1 2 + : Ni-Cd S : Terminal for distinction of battery T : Terminal for detection temperature ­ : Ground terminal + : Ni-MH, Li-ion + D5 L1 330µ 9 10 13 7 1 3 Q1,3 Q2 Q4 U1 U2 U3 U4 U5 U6 : 2SA2712 : 2SA1757 or 2SA1469 : PK7002 : PJ431 : AMC-04 : TL494 or UPC494C : LM339 or BA10339F : BA10393 : T600D D1 : RLS4148N D2~5 : SB140 D6 : SB240 LED1 : M059AGW-A-K Vcc BTYPE

JK1

P1

D6

1 2

(G)

(R)

KSC-25
BATTERY PACK
KNB-24L (Li-ion Battery Pack : 1400mAh)
s External View

KNB-26N (Ni-MH Battery Pack : 2000mAh)
s External View

s Schematic Diagram
DISCHARGING TERMINALS S 1.8M

s Schematic Diagram
DISCHARGING TERMINALS S 220k

S S T

T

CHARGING TERMINALS CHARGING TERMINALS

KNB-25A (Ni-Cd Battery Pack : 1200mAh)
s External View

s Schematic Diagram
DISCHARGING TERMINALS S 560k

S

T

CHARGING TERMINALS

5

KSC-25

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