Yamaha DVR-S150 Service Manual page 76

A B
DVR-S150/NX-P150
DVR-S150 SCHEMATIC DIAGRAM (MAIN 1/3)
1
2
X : NOT USED
10.6
3
10.3
4
VIDEO_L
5
0
0
0
0
0
0
6
0.1
0
-12.2
7
0
0
-12.1 -12.1
0 0
8
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76
C D E
11.7
0
0
0
-7.0
0
VIDEO_L
7.1
0
0
0
0
0
0.2
0
0.2
0
0
0
FRONT_L
0
11.8
0
0.3
0
F G
11.7
7.8
7.9
7.6
-12.2
0
0.2
0
0
0.2
0
11.8
FRONT_L
0
0.6
0
1.2
0
1.1
0
0.4
0
7.1
0
-7.0
H I J
VIDEO_L
(ANALOG IN)
FRONT_L
Page 75
F1
CENTER
to DIGITAL
REAR_L
-12.2
-7.6
0 0
-7.6
-7.0
0
0.7
0
0
0.7
Page 79
0
G4
to SUB (1)
CENTER
Page 77
A6
REAR_L
to MAIN (1)
5.5
0
12.1
5.1
5.7 Page 79
A5
to SUB (1)
0
* 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.
K L
IC124 : LC72722PM
RDS decoder
1 5 6
VDDA 3 + CLOCK 14 VDDD
PLL
RECOVERY
REFERENCE (57kHz)
(1187.5Hz)
VOLTAGE
VSSA
4 15 VSSD
VREF
57kHz
ANTIALIASING SMOOTHING DATA
MPX IN 2 bpf 19 RDS-ID
DECODER
FILTER FILTER
(SCF)
DO 20
CL 21 18 SYNC
RAM ERROR CORRECTION SYNC/EC
DI (24 BLOCK DATA) (SOFT DECISION) CONTROLLER
22 CCB 24 SYR
CE 23
CLK(4.332MHz)
T1 7 MEMORY
T2 CONTROL
8 TEST SYNC SYNC
T3 9 OSC/DIVIDER DETECT-1 DETECT-2
T4 10
11 16 17 13 12
IC121 : BD3842FS-E2
Function Switch
24 23 22 21 20 19 18 17 16 15 14 13
LOGIC
1 2 3 4 5 6 7 8 9 10 11 12
IC122 : NJM2068MD
IC125 : BA15218F
Dual OP-Amp
OUT 1 1 8 +V CC
–IN 2 7 OUT
1 2
+ – + –
+IN 1 3 6 –IN 2
–V CC 4 5 +IN 2
IC123 : BD3815KS
Audio Sound Processor
42 41 40 39 38 37 36 35 34 33 32 31 30 29
TONE
INFRA 43 28 GND8
INFLA 44 27 OUTSW
SW1
+
A
INSWA 45 – 26 GND7
+
B
–
INSRA 46 25 OUTSR
+
A
–
B +
47 24
INSLA – GND6
48 + 23
INCA A OUTSL
–
+
B
–
INSBA 49 22 GND5
SW2
+
A –
INFRB 50 21 OUTC
A +
B
B
–
INFLB 51 + 20 GND4
A –
A
B +
INSWB 52 19 OUTSB
B –
+
SW3
–
INSRB 53 A 18 VCC
+
B
A
–
+
INSLB 54 B 17 GND3
–
A
B
INCB 55 16 VEE
INSBB 56 15 VDD
LOGIC
1 2 3 4 5 6 7 8 9 10 11 12 13 14
IC127 : 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
Z