Kenwood KSC-256 User manual

SERVICE MANUAL
This product uses Lead Free solder.
This product complies with the RoHS directive for the European market.
© 2008-9 PRINTED IN JAPAN
B51-8844-00 (N)PDF
KSC-256/316/326/356
MULTIPLE CHARGER
T
TST
Charging slot layout
AC inlet
(E03-0462-08)
Cabinet
(A02-4058-08)
Power switch
(S66-0407-08)
Charging slot
(A02-4059-08): KSC-256
(A02-4060-08): KSC-326
(A02-4061-08): KSC-316
(A02-4062-08): KSC-356
Foot
(J02-1303-08) x 4
Badge
(B43-1628-08)
AC cord
(E30-7668-08): K
AC cord
(E30-7669-08): X
AC cord
(E30-7670-08): E
AC cord
(E30-7671-08): T
Note:
The battery slots are molded for different model types.
The illustration shows the KSC-256.
The K type for KSC-356 and KSC-316 are not available.
The X type for KSC-316 is not available.
KSC-256/KSC-326 KSC-356 KSC-316

KSC-256/316/326/356
2
Document Copyrights
Copyright 2008 by Kenwood Corporation. All rights re-
served.
No part of this manual may be reproduced, translated,
distributed, or transmitted in any form or by any means,
electronic, mechanical, photocopying, recording, or other-
wise, for any purpose without the prior written permission
of Kenwood.
Disclaimer
While every precaution has been taken in the preparation
of this manual, Kenwood assumes no responsibility for er-
rors or omissions. Neither is any liability assumed for dam-
ages resulting from the use of the information contained
herein. Kenwood reserves the right to make changes to any
products herein at any time for improvement purposes.
CONTENTS
DISASSEMBLY FOR REPAIR ........................................... 3
TROUBLE SHOOTING ..................................................... 5
CHARGING FLOW CHART............................................... 7
PARTS LIST ...................................................................... 8
EXPLODED VIEW ............................................................. 9
OPTIONAL ACCESSORY
KMB-30 (BRACKET).................................................... 10
SPECIFICATIONS ........................................................... 11

KSC-256/316/326/356
3
Note:
Replacements are not possible other than for those items
listed in the bill of materials.
Other than the AC jack, the power switch, the fuse, and the
LED indicator, you cannot replace the parts on the printed
circuit board.
Alert: After the repairs have been completed, please per-
form a Megger insulation test on the ground side of the AC
jack and the charger terminal. The standard is 2MΩor more.
Removing the Upper Case
1. Remove the 10 screws (
q) from the upper case.
2. Raise the case while pulling forward underneath where
the power switch hole is located (
w,e).
(When pulling on the case without raising it, it will catch
where the power switch hole is located.)
Mounting position
of KMB-30
Mounting position
of KMB-30
:
:
:
:
:
:
@
.
Removing the Charging Slots
1. Remove the 11 screws (
q) from the aluminum plate
and the 2 screws (
w) from the charging slots to remove
the aluminum plate and insulating sheet.
2. Remove the 12 screws (
e) holding the printed circuit
board to the charging slots to remove the charging slots.
Note: Refer to figure (
r) during the removal in order to
retain the shading tubes of the LEDs.
Removing the Illumination Guide
1. Push the illumination guides through the charging slot
while the equipment is upside-down (
t).
:
:
:
:
:
:
:
@
Insulating
sheet
.
;
=
.
DISASSEMBLY FOR REPAIR

KSC-256/316/326/356
4
Removing the Charging Terminal
1. While pushing down on the protruding charger terminal,
slide the terminal out.
Note: Clean the charger terminal landing by wiping it
with an alcohol dampened cloth.
Installing the Shading Tube
1. After installing the charging slots onto the printed circuit
board, verify that the shading tubes cover the heads of
the LEDs.
Installing the LEDs
1. Install the LEDs onto the printed circuit board in the man-
ner shown in Exploded view.
Installing the Charging Slot
1. When installing the charging slot to the PCB, tighten the
screw in the direction indicated (right edge).
:
:
@
@
.
.
;
=
B
=
B
;
DISASSEMBLY FOR REPAIR

KSC-256/316/326/356
5
TROUBLE SHOOTING
The LED does not light up,
or red blinks.
Is 16V DC voltage? Is not the fuse
(F53-0428-08)
blowout?
Malfunction the PCB.
Note:
Measuring condition: With the charging slot installed to the PCB.
Replace the fuse (F53-0428-08).
Is the voltage of
0.6V~4.0V output to
the T terminal?
Replace the terminal of +1 or +2.
The LED does not light up,
or red blinks.
Yes
Yes
Yes
No
Malfunction the PCB.
Yes
Yes
No
Replace the terminal of T.
No
Is voltage
output to the S terminal?
(Refer to table 1)
Replace the terminal of S.
No
Only KSC-256 or KSC-326
Battery type S terminal voltage (V)
KNB-25A
KNB-26N
KNB-24L/35L
KNB-31A
KNB-32N/41NC/50NC
KNB-33L/47/48L
KNB-29N/30A
KNB-45L
0
0
Battery cells voltage x 0.75
0
Battery cells voltage x 0.6
Battery cells voltage x 0.75
-
-
Table 1

KSC-256/316/326/356
6
PK6
(–)
PK6
(T)
PK6
(S)
PK6
(+2)
PK6
(+1)
PK4
(–)
PK4
(T)
PK4
(S)
PK4
(+2)
PK4
(+1)
PK5
(–)
PK5
(T)
PK5
(S)
PK5
(+2)
PK5
(+1)
PK3
(–)
PK3
(T)
PK3
(S)
PK3
(+2)
PK3
(+1)
PK2
(–) PK2
(T)
PK2
(S)
PK2
(+2)
PK2
(+1)
PK1
(–)
PK1
(T)
GND
+16V
+16V
PK1
(S)
PK1
(+2)
PK1
(+1)
TROUBLE SHOOTING

KSC-256/316/326/356
7
CHARGING FLOW CHART
Temperature Check
-2°CT43°C
Stand-by Temperature
LED: RED
Timer 30min START
Temperature Check
6°CT
Temperature Check
-2°CT60°C
Voltage Check
V11.4V
Voltage Check
4.8VV
-2°CT43°C Passage 30min
Timer Error Battery
LED: Green & Orange Flash
Above
11.4V
Low Voltage Charge
300mA LED: RED
Timer 30min START
Low Temperature Charge
300mA LED: RED
Timer 20min START
Passage
30min
Passage 20min
No
No
No
No
No
No
No
Yes
YesYes
Yes
Yes
Yes
Abobe 4.8V within
30min Timer stop
Temperature Check
-2°CT43°C
Stand-by Temperature
LED: RED
Timer 30min START
Voltage Check
V8.55V
Voltage Check
5.8VV
-2°CT43°C
Passage 30min
Timer Error Battery
LED: Green & Orange Flash
Above
8.55V
Low Voltage Charge
140mA LED: RED
Timer 90min START
Passage
30min
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Temperature Check
-2°CT57°C
Charging current
100mA
Yes
Yes
No
No
Yes
Yes
Yes
Abobe 5.8V within
90min Timer stop
Rapid Charge:
KNB-25A/KNB-26N/31A/32N/41NC/50NC: 1000mA
KNB-29N/30A: 850mA
-ΔV detect
T40°C 9.0V~10.8V
T40°C 7.8V~10.8V
dT/dt detect: 1°C/1min
KNB-25A: 120min Timer start
KNB-26N/31A/32N/41NC/50NC/29N/30A: 180min Timer start
LED: RED
Rapid Charge:
KNB-24/35L/45L: 945mA
KNB-33L/47L/48L: 1420mA
Timer 210min START
LED:RED
Below 5.8V
Above 8.55V
Below 7.5V
When Rapid Charge start
passage 10min
Error Battery
Timer STOP
LED: RED Flash
Below 4.8V
Below 7.8V
When Rapid Charge start
passage 10min
Stand-by Temperature
LED: RED
Timer HOLD
Stand-by Temperature
LED: RED
Timer Continue
Stand-by Temperature
LED: RED
Timer HOLD
I = 0
-2°CT45°C
7.9VVB
Timer210min
-2°CT45°C
60°CTTemperature
waitting times2
8.5VVB
Detected:
-ΔV or dT/dt
or Above 10.8V
or Passage timer
Detected Full Charge
KNB-25A: 120min Timer STOP
KNB-26N/31A/32N/41NC/50NC/29N/30A: 180min Timer STOP
LED: Green
KNB-26N31A/32N/41NC/50NC/29N/30A
Trickle Charge: Ave 6mA Pulse
10 hour Timer START
LED: Green
I = 0
Detected Full Charge
210min Timer stop
LED: Green
Above 8.55V Below 7.3V
Below 7.3V
KNB-25A
Trickle Charge: 60mA
10 hour Timer START
LED: Green
Finish Charge
10 hour Timer STOP
LED: Green
Above 11.4V
Above 11.4V
Distinguish Battery KNB-24L/35L/33L/47L/48L/45L
KNB-25A/26N/31A/32N/32N/41NC/50NC/29N/30A
+P1 or +P24.0V
Give all B+ terminal power 16V 60mA
Timer 5min START
Does T terminal contact?
START
Error Battery
Timer STOP
LED: Red Flash
Timer5min
*About voltage write down
KNB-24L/35L/32N/41NC/50NC/47L/48L: S-Type
KNB-25A/26N/31A/29N/30A/45L: B-Type
S-Type is Sterminal voltage
B-Type=(+P1 or +P2 voltage)–Vf

KSC-256/316/326/356
8
Ref. No. Address New
parts Parts No. Description Destination
KSC-256/326/316/356
11A ✽A02-4058-08 CABINET
22A ✽A02-4059-08 CHARGING SLOT (KSC-256)
22A ✽A02-4060-08 CHARGING SLOT (KSC-326)
22A ✽A02-4061-08 CHARGING SLOT (KSC-316) E,T
22A ✽A02-4062-08 CHARGING SLOT (KSC-356) X,E,T
4 1A,2A ✽B11-1867-08 ILLUMINATION GUIDE
52A ✽B30-2320-08 LED
61A ✽B43-1628-08 BADGE (KENWOOD)
-✽B62-2118-00 INSTRUCTION MANUAL K, X
-✽B62-2119-00 INSTRUCTION MANUAL E, T
93A ✽E03-0462-08 AC INLET
10 2A,2B ✽E29-1223-08 TERMINAL (CHARGING)
-✽E30-7668-08 AC CORD K
-✽E30-7669-08 AC CORD X
-✽E30-7670-08 AC CORD E
-✽E30-7671-08 AC CORD T
13 2A ✽F15-1018-08 SHADING TUBE
14 2A ✽F53-0428-08 FUSE
16 3A,3B ✽J02-1303-08 FOOT
A2A ✽N09-6588-08 SCREW (AC INLET)
B 3A,3B ✽N09-6589-08 SCREW (PCB,BOTTOM)
C 3A,3B ✽N09-6590-08 SCREW (PCB,SLOT,CABINET)
D 3A,3B ✽N09-6591-08 SCREW (FOOT)
F 2A,3A ✽N19-2205-08 WASHER (PCB-SLOT)
G 3A,3B ✽N19-2206-08 WASHER (FOOT)
H 3A,3B ✽N19-2207-08 SPRING WASHER (FOOT)
18 3A ✽S66-0407-08 POWER SWITCH
PARTS LIST

KSC-256/316/326/356
9
EXPLODED VIEW
Parts with the exploded numbers larger than 700 are not supplied.
3
2
1
BA
COMMON
RED
GREEN
Install the LEDs onto the printed circuit
board in the manner shown in illutration.
COMMON: Longest lead
RED: Second longest lead
GREEN: Shortest lead
10*
KSC-256, KSC-326: 5x3
KSC-316, KSC-356: 3x3
6
1
4x6
2
10*
10*
13x3
13x3
14
5x3
701x3
702
704
703
701x3
5x3
F
F
C
C
C
D
D
Cx2 C
C
Cx2
Cx2
Cx3
B
Bx2
Bx2
Bx3
B
Bx2
18
16
16x2
16
Note: The illstration of charging slot shows the KSC-256.
G
G
H
H
Dx2
Gx2
Hx2
Ax2
9
A : N09-6588-08
B : N09-6589-08
C : N09-6590-08
D : N09-6591-08
F : N19-2205-08
G : N19-2206-08
H : N19-2207-08

KSC-256/316/326/356
10
OPTIONAL ACCESSORY
KMB-30 (BRACKET)
■External View
:
@.
■Parts List
Ref. No. New
parts Parts No. Description
KMB-30
q✽J29-0746-08 BRACKET
w✽N09-6586-08 PAN HEAD SCREW
e✽N09-6587-08 SCREW (ANCHOR)

KSC-256/316/326/356
11
SPECIFICATIONS
AC Voltage
K type 120V AC
X,E,T type 100~240V AC
Dimensions (W x H x D) (charger only) 526 x 105 x 203 mm
20.7 x 4.1 x 8.0 inches
Weight (charger only) Approx. 3kg / 106 oz
Approximate Charging Time
Li-ion Ni-Cd Ni-MH
Battery Pack Charging Time Battery Pack Charging Time Battery Pack Charging Time
KSC-256
KNB-24L 150 minutes
KNB-25A 70 minutes KNB-26N 130 minutes
KNB-35L 170 minutes
KSC-316 - KNB-30A 120 minutes KNB-29N 180 minutes
KSC-326
KNB-33L 140 minutes
KNB-31A 110 minutes
KNB-32N 170 minutes
KNB-47L 140 minutes KNB-41NC 170 minutes
KNB-48L 170 minutes KNB-50NC 140 minutes
KSC-356 KNB-45L 180 minutes - -

KSC-256/316/326/356
2967-3, Ishikawa-machi, Hachioji-shi, Tokyo, 192-8525 Japan
P.O. BOX 22745, 2201 East Dominguez Street, Long Beach,
6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8
Rembrücker Str. 15, 63150 Heusenstamm, Germany
Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium
KENWOOD House, Dwight Road, Watford, Herts.,
Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands
Via G. Sirtori, 7/9 20129 Milano, Italy
Bolivia, 239-08020 Barcelona, Spain
(A.C.N. 001 499 074)
16 Giffnock Avenue, Centrecourt Estate, North Ryde, N.S.W. 2113 Australia
Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road,
1 Ang Mo Kio Street 63, Singapore 569110
CA 90801-5745, U.S.A.
Kwai Fong, N.T., Hong Kong
WD18 9EB United Kingdom
L’Etoile Paris Nord 2, 50 Allée des Impressionnistes,
Bp 58416 Villepinte, 95944 Roissy Ch De Gaulle Cedex