Kenwood KAC-5203 Service Manual page 7

F
Q7,8
for DC-DC
COMPARATOR
TP23
TP25
10 : 5
Q7
L2
C8
2200u16
+
Q8
TP24
TP26
610-614
HOCK NOISE
MUTE
P620
Q610
TP618
11
R623
47K
TP615
1
Q606-609
DC PROTECTION
12
TP635
Q608
2
Q609
+DC
+B
15V
Q211,212
TEMPERATURE
Q205
COMPENSATION
1mA
TP207
Q205,206
C209
6P
CURRENT
MIRROR
R251
47K
C213 3P
C215
47P
Q207 Q209
R237
D201
10
P
D202
Q208 Q210
C216
47P
C214
R252 3P
47K Q206
C210
02
6P
TP208
CAUTION : For continued safety, replace safety critical components only with
manufacturer's recommended parts (refer to parts list).
Indicates safety critical components. To reduce the risk of electric shock,
leakage-current or resistance measurements shall be carried out (exposed
parts are acceptably insulated from the supply circuit) before the appliance
is returned to the customer.
G
Q3-6
FET
DRIVER
Q3
TP17
TP21 TP15
R17
TP18
56
Q4
Q5
R18
TP19
56
TP22 TP16
TP20
Q6 TP606
TP614 R616
14V
2.2K
Q605
TP613
Q606
D607
TP612
Q607 Q604
A-MUTE
R223
47
Q213-216
DARLINGTON
1st STAGE
Q211
Q617
Q618
Q217-220
D612 FINAL
D615
STAGE
TP629
R225
47
-B
TP631
-B
R226
47
D616
Q619
TP630
D613
Q620
Q212
R224
47
+B
H
5V
DC-DC COMPARATOR
R1 1K
1
TP5
R2 10K
2
3
4
TP7
C3 1000P 5
TP6
R3 22K
6
7
TP9 TP8
C2
10u50
8
+
D3
R609
TP608
P.CON
33K
Q603
NORMAL
: OFF
Q604,605
MUTE
DRIVER
+B
Q217
Q213
R229
4.7
R646
TP215
1K
TP213
R647
1K
TP217
R231
4.7
TP632
Q219
Q215
TP633
Q621
R650
12K
Q216
Q617-621
Q220
OVER
R232
CURRENT
DET
4.7
R648
TP218
1K
TP214
R649
TP216
1K
R230
4.7
Q218
TP27
TP28
Q214
P1
• DC voltages are as measured with a high imped-
ance voltmeter. Values may vary slightly due to
variations between individual instruments or/and
units.
I
KAC-5203
IC4
16
IN1+ IN2+
15
IN1- IN2-
14
FBACK REF
13
DTC OUTCTRL
12
CT VCC
11
RT C2
10
GND E2
9
C1 E1
14.4V
VOLTAGE
SUPPLY
Q601
R604
30K
R605 R601
3.6K 3.6K
TP605 TP602
D601
R602
3.9K
TP604
TP3
Q602 R603
L1
D602
3.9K
TP2
C1
10u50
OVER VOLTAGE
PROTECTION
TP1
IC1-3,5 : BA4560RF
IC4 : TL494IDR
Q3,6 : 2SC4097
Q4,5 : 2SA1577
Q7,8 : STP60NF06FP
Q201-204,605,606,612,614
: 2SA1576A(R,S)
Q205,206,618,619
: 2SA992-A(F,E)
Q207-210,610,617,620
: 2SC1845-A(F,E)
Q211,212 : 2SC3419(Y)-F
Q213,214 : 2SC1627A-F
Q215,216 : 2SA817A-F
Q217,218 : 2SC4468NF
Q219,220 : 2SA1695NF
Q601 : 2SB1241
Q602-604,607-609,611,
613,615,616,621-623
: 2SC4081
D1 : RM4ZLF-J4NF
D2-4,201-204,603,605-607,
610,611,614,617
: 1SS133
D6 : FCH10A20
D7 : FRH10A20
D8,9,602 : UDZS15B
D101,612 : LM1MA142WK-G
D102,613,615,616
: LM1MA142WA-G
D103,104,601 : UDZS6.8B
D604,609 : UDZS10B
KAC-5203
D650 : B30-1710-05
X09-8612-70 (2/2)
J
1
2
3
J3
4
7 BATT
6 GND
5 P-CON
4 LCH+
3 LCH-
2 RCH-
1 RCH+
55W/4
65W/2
150W/4 BTL
5
6
7
7