Kenwood TK-2170ST Service Manual page 70

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Parts List
New
Ref. No.
Parts No.
parts
A02-3656-08
Cabinet Bottom
A02-3841-08
Cabinet Upper
B43-1151-08
Badge
B62-1754-08
Instruction manual
B62-1755-08
Instruction manual
B72-2209-08
Model name plate
E03-0453-08
DC jack
E23-1190-08
Relay terminal
G13-1547-08
Cushion
N83-2610-45
Pan head taptite screw
W02-3671-08
Electric circuit module
W08-0479-05
AC adapter 120V AC 60Hz
W08-0513-05
AC adapter 230V AC 50Hz
W08-0558-15
AC adapter 230V AC 50Hz
Schematic Diagram
INPUT+
D9
Vadp
INPUT–
IC1
NJM78L10A
J4
3
1
10V
IN
OUT
2
R35
R18
56k
100k
KSC-30 (RAPID CHARGER)
Desti-
Description
nation
K,T
E
K
T
E
IC2
TP
HEF4541BP
Rt2
Rt
1
14
Vdd
33k
180k
2
13
Ct
2.2µ
3
12
Rs 470k
4
11
NC
NC
5
10
6
9
RESET
7
8
OUT
Q8
2SC945
Operating Flow Chart
Power ON
Initialization
Insert battery
Does
S terminal
connect?
Distinguish the
kinds of battery
Vs : Low
(Ni-Cd or Ni-MH)
Charging 200mA
Red LED turn on
(Charging timer
start counting)
Charging complete
(approx. 11 hours)
LED OFF
Q3
2SA1015(Y)
R1 1k
Q1
2SA1469
R3 12
R10 12
D1
MTZJ2.0B
D5
1N4148
R14
D3
3.9k
Q5
1N4148
2SC945
R15 100k
D4
1N4148
Q7
R16 56k
2SC945
TK-2170/2170ST
No
Yes
Vs : High
Battery is not
(Li-ion)
correspond
LED OFF
R27
–1
0
B1+
200mA
R28
–2
0
B2+
200mA
B–
Vadp
Vdd
S
J1 0
J2 0
R33 0
Vadp
J3 0
Vdd
R31 0
67

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