Kenwood Battery Charger KSC 24 User Manual

RAPID CHARGER  
KSC-24  
SERVICE MANUAL  
© 2001-5 PRINTED IN JAPAN  
( )  
B51-8583-00 N 1775  
AC adapter  
(W08-0523-15) : K  
(W08-0524-15) : E  
(W08-0939-05) : T  
Relay terminal  
(E23-1058-08) x 4  
Cabinet (Upper)  
(A02-3626-08)  
Photo is K type.  
Circuit Description  
I Power Supply Section  
I Charging Switch Section  
1. The power supply generates constant current (1.1A)  
from the input voltage (rated 15V DC) from the adapter.  
2. IC101 is a DC/DC converter.  
1. Q201 is a transistor that turns quick charging on and off.  
2. Q202 is a transistor that turns trickle charging on and off.  
3. The resistor (R204) determines the leakage current.  
3. R117 is a resistor for current detection.  
4. R110 and R111 are resistors for no-load voltage detec-  
tion (non-load voltage : 14V).  
5. IC201 is a power supply/reset IC for the microcomputer  
(IC202).  
I Display Section  
1. LED201 is a two-color LED that indicates the charging  
state.  
2. Red on ............... Quick charging or warming up  
Green on ............ Charging is complete  
Red blinking ....... Abnormal (short terminal, short bat-  
tery, or open terminal)  
· Power output : 5V  
· Reset output : “H” (Normal)  
· After reset : “L”  
I Charging Control Section  
1. The microcomputer (IC202) controls the following;  
· Peak detection (Detected when fully charged, pin 27 of  
IC202)  
Charging  
The charging time for each pack is shown in the table.  
Battery  
Approximate  
Battery  
Pack  
Battery Voltage  
Capacity Charging Time  
· Temperature control (Pin 2)  
· Detection of abnormality, such as a short terminal (Pin  
27)  
· LED control (Red : Pin 21, Green : Pin 22)  
· Trickle charging (Pin 18)  
· Quick charging (Pin 17)  
Type  
(Volts)  
(mAh)  
600  
(Minutes)  
KNB-14  
KNB-15A  
KNB-16A  
KNB-17A  
KNB-20N  
KNB-21N  
KNB-22N  
Ni-Cd  
Ni-Cd  
Ni-Cd  
Ni-Cd  
Ni-MH  
Ni-MH  
Ni-MH  
7.2  
7.2  
7.2  
7.2  
7.2  
7.2  
7.2  
40  
60  
1100  
1100  
1500  
1600  
1600  
2100  
60  
80  
2. X201 is an oscillator that generates clocks for the micro-  
computer (4MHz).  
80  
80  
110  
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KSC-24  
CIRCUIT DIAGRAM  
3
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KSC-24  
SPECIFICATIONS  
Charging current ....................................... 1100 ± 150mA  
Source voltage .......................................... Approx. 15V  
Usable temperature range........................ 0°C to 40°C (32°F to 104°F)  
Line voltage (AC adapter) ......................... 120V AC (K)  
230V AC (E)  
230V AC (T)  
Dimensions (Body only)............................ 2-11/64 in (55mm) H x 4-1/8 in (105mm) W x 5-5/16 in (135mm) D  
Weight (Body only) ................................... Approx. 180g / 6.3oz  
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.  
Mechelsesteenweg 418 B-1930 Zaventem, 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  
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