Denon S-301 Service Manual page 80

SN74LVC2G14 (IC113: 1U-3693)
1
1A 6 1Y
GND 2 5 V
2A 3 4 2Y
STR-F6238S (IC902: 1U-3682: E3)
STR-F6267S (IC902: 1U-3682: E2)
FRONT
VIEW
TC7S08F (IC806: 1U-3692)
BD9703 (IC805: 1U-3695)
STBY
5
BD9703
1 2 3 4 5
LOGIC DIAGRAM (POSITIVE LOGIC)
1
1A
CC
3
2A
4 V
IN
DR V .R E G
O.V .P Latch
S tart
R eg.
T .S .D.
O.L.P
O. S . C
C u r r e n t
M ir r o r
5 F .B
BD4828G (IC203: 1U-3694)
V
OUT
V
DD
G ND
VCC
1
VRFE
PWM COPM
DRIVER
OSC
STBY
CLT
LOGIC
TDS OCP
Error AMP
3
GND
6
1Y
4
2Y
D
3
R g2
R g3
R g1
DR V
2
1
O.C .P
INH1
INH2
F .B
1 5 N.C .
2
3
4 N.C .
PQ070XZ01Z (IC111: 1U-3692)
0 7 0 X Z 5 M
OUT
1 2
2
INV
4
80
G ND
O.C .P
LM3671 (IC912: 1U-3694)
V 1
IN
GND 2
EN 3
(IC232: 1U-3693)
3
1
Specific I C
2
5
DC input ( V
1
I N
ON / OF F control terminal ( V
2
3 DC output ( V
Output voltage adjustment ( V
4
3 4 5 GN D
5
S-301
5 SW
4 FB
3
4
)
)
C
)
O
)
ADJ