Nx-Sw150 Schematic Diagram - Yamaha DVR-S150 Service Manual

A B
DVR-S150/NX-P150
NX-SW150 SCHEMATIC DIAGRAM (MAIN) DVR-S150 SCHEMATIC DIAGRAM (MAIN 3/3)
1
2
0
0
0
-13.7
-21.2
3
-11.8
-10.7
4
5
6
7
8
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78
C D E
Page 79 A6
(1) to SUB (1)
11.6
0
0
0
0
0
-11.6
4.9
-8.3 4.9
MAIN (2)
-7.1
-8.3 4.9
-7.1
-10.3 4.9
-8.1
-10.7
-7.1
-7.1
-13.6
FL DRIVER
-8.2
-21.0
-15.4
-19.1
-11.7
-8.2
-21.0
-19.0
-21.0
34.2
-9.9
-8.1
AC25.2
AC25.2
-34.4
IC1, 2, 7 : KIA4558P
Dual OP-Amp
OUT 1 1 8 +V CC
–IN 2 7 OUT
1 2
+ – + –
+IN 3 6 –IN
1 2
–V 4
CC 5 +IN 2
F G
Page 75 H1
to DIGITAL
LIMITTER
0
11.6
0
0
0
0
-11.6
4.9 -19.0
-19.1
4.9
-19.1
34.2 11.6
-19.1
PROTECTION
-19.0
1.1
-19.0
-19.0
1.0
-19.0
-19.0
-19.0
-19.1
-17.2
11.0
-11.8 11.6
-6.5
0.6
MAIN (1)
H I
POWER AMP
0
0
Page 79
H5
to SUB (4)
0
0
Page 79
H4
to SUB (4)
-11.6
0
0
0
0.5
0
0
11.6
* All voltages are measured with a 10M Ω /V DC electronic volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to
those originally installed.
* Schematic diagram is subject to change without notice.
J K L
IC4 : STK404-050
Power Amp
TR7
TR6
R1
R4
TR1 TR2
R5
TR8
IC221 : LC75712E C2
C1
FL Display Driver
R2
TR5
TR3 D1 R3 R6
TR4
CG 1 AM1
DI 64
ROM 2 AM2
$ !
#
# DC $
SUB
) SHIFT REGISTER )
CL 63
1 2 3 4 5 6 ! 7 8 9 10
'
RAM
$
y
)
! CG
CE 62
RAM '
+
35 AM35
'
36 AA1
ADDRESS ADDRESS AD
VDD
60 37 AA2
REGISTER COUNTER RAM
AA3
38
VSS 57 39 AA4/G16
BLINKCYCLE BLINK
40 AA5/G15
REGISTER GENERATOR
AA6/G14
41
VFL 55
42 AA7/G13
DISPLAY
DISPLAY
43 AA8/G12
REGISTER CONTROL
RES 61 44 G11
G10
45
DUTYCYCLE DUTY
REGISTER GENERATOR
'
TEST 56
GRID GRID $
y
REGISTER CONTROL
'
'
INSTRUCTION
CONTROL
+
DECODER
'
53 G2
OSCI 59 TIMING
OSC DIVIDER G1
GENERATOR 54
OSCO 58
IC311 : NJM2904M
IC312 : TC74HCT00AF
IC701 : PC4570G2
Dual OP-Amp Quad 2 Input NAND
A1 1 14 V
OUT 1 8 +V DD
1 CC
ÐIN 1 2 7 OUT 2 B1 2 13 B4
+ Ð + Ð
0
+IN 1 3 6 ÐIN 2
Y1 3 12 A4
ÐV 4 5 +IN
CC 2
A2 4 11 Y4
B2 5 10 B3
0
Y2 6 9 A3
V SS 7 8 Y3
IC275 : PQ1CG21H2F
IC276 : PQ1CG2032FZH
Voltage Regulator
V IN 1 2 V OUT
VOLTAGE ON/OFF
REGULATOR CIRCUIT
PWM 5 ON/OFF
COMP.
SOFT
START
OVER CURRENT Q
PROTECTION
F/F R OSCILLATOR
CIRCUIT 4 O ADJ
S
ERROR
AMP.
VREF
OVER HEAT
PROTECTION
CIRCUIT
3
COM
* All voltages are measured with a 10M /V DC electronic volt meter.
* Components having special characteristics are marked Z and
must be replaced with parts having specifications equal to
those originally installed.
* Schematic diagram is subject to change without notice.
Z