Yamaha R-S300 Service Manual page 57

A B C
OPERATION 1/2
1
OPERATION (2)
2
IC801
CB807
3
(For service)
s47
IC801
CB801
0
0
0
0
0
0
Page 55 D8
0
4
to FUNCTION (2)_W401
0
0
0
0
15.7
-15.6
W801
-15.5
0
Page 55 H2
0
to FUNCTION (1)_CB504
0
5.0
5
OPERATION (1)
6
5.0
-19.5
-19.5
7
-19.5 -21.1
5.0
-19.5
-19.0
-21.3
-19.0 -21.3 -21.1
8
CB701
5.0
5.0
0
5.0
5.0
0
5.0
Page 55 I2
5.0
to FUNCTION (1)_CB503 0
5.0
9
5.0
0
5.0
5.0
5.0
0
0
0
0
10
D E F
CB806 W802
0
0
0
PURE DIRECT
15.7
0
IC802
0
0
s50
CB803
0
0
0
0
0
15.7
-15.6
0
0
IC802
0
CB805
s50
0
-15.6
0
0
Page 59
15.7
to MAIN (1)_W104
OUT L -15.6
0
CB804
0
-15.2
0 -15.2
0
Page 59 A8
to MAIN (1)_CB101
-17.5 -21.8
-17.5 -21.8
-14.7 -19.0
-21.8 -21.8
VFD DRIVER
-19.0 -19.0
-21.8 -19.0
-19.0 -19.0
-17.5
-20.4 IC701
-19.0 5.0
-19.0 2.2
2.2
-18.9
-21.8 0
0
5.0
0 5.0
-18.7
5.0
0 0 0 0
5.0 0 5.0
U, C, R, A, L
FM MODE
Page 58 B2
to OPERATION (13)_CB11
G H I
OPERATION (10)
0
0
0
PURE DIRECT
indicator
OPERATION (3)
VOL OUT
TONE OUT IC901
CB901
0
0
0
0
0
15.7
-15.6
TREBLE BASS IC901
K10
IC901
OPERATION (8)
OPERATION (11)
POWER
indicator
5.0 3.1
W701B W704A W704B
W701A 5.0
5.0 5.0
5.0
5.0 5.0 5.0 5.0
1.2
5.0 5.0 5.0
5.0
0
0 0 0 0
0.6
0 0 5.0
(power)
0 0
0
0
-16.2
-19.0
A B
SPEAKERS
-21.9
OPERATION (5)
5.0
Page 55
5.0
to FUNCTION (1)_CB505
INPUT
5.0
0
W705
W703A
W703B
J K
OPERATION (4)
TONE IN
CB902 CB951
0 0
0 0
0 0
0 0
0 0
BALANCE
LOUDNESS
W851
5.0 VOLUME
Page 55 L3 0
5.0
to FUNCTION (1)_CB513
0
OPERATION (7)
OPERATION (6)
CB706
0
Page 59 A4
0
JK701
to MAIN (1)_W105 PHONES
0
J2
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
Ohm
V
A/D conversion
value
(5.0 V=255)
KEY0
(95 pin of the
microprocessor)
Ohm
V
A/D conversion
value
(5.0 V=255)
KEY1
(94 pin of the
microprocessor)
L M N
R-S300
Destination Part List
P.C.B. sXX LOC UC R A G L
(12) s11 C7 WJ36120 WD05420 WJ36120 WJ36120 WJ36120
0.047/400 0.047/630 0.047/400 0.047/400 0.047/400
s12 C10 WB69630 WF08150 WF08150 WF08150 WF08150
0.1/400 0.047/630 (J) 0.047/630 (J) 0.047/630 (J) 0.047/630 (J)
s13 C12 X WD04730 X X X
3300/50
s14 C14 UU24933 X UU24933 UU24933 UU24933
3300/25 3300/25 3300/25 3300/25
(14) s15 CB8 X WN10300 X X X
CB9 TP00351-31
s16 CB10 X V937790 X X X
4P
(12) s17 D15 X WS69820 X X X
HZU15B3 TRF-E
(13) s18 D23 X WS70040 X X X
HZU30B
(14) s19 F4 X VV07160 X X X
2.5A250V
(12) s20 J9 X X X X X
s21 J10 VN50000 X VN50000 VN50000 VN50000
. . . .
s22 Q9 WC52940 X WC52940 WC52940 WC52940
KTC3875S (Y) KTC3875S (Y) KTC3875S (Y) KTC3875S (Y)
s23 R12 RD35747 X RD35747 RD35747 RD35747
47K 47K 47K 47K
(13) s24 R40 X RD35710 X X X
10K
(12) s25 R45 X HV75322 X X X
2.2
(14) s26 SW1 X VZ07550 X X X
SL14-22AM5F
(12) s28 F1 WB22110 WB22110 VV07160 VV07160 VV07160
5.00A125V 5.00A125V 2.5A250V 2.5A250V 2.5A250V
s29 T1 YC772A0 YC773A0 YC774A0 YC774A0 YD161A0
YC772 YC773 YC774 YC774 YD161
(13) s30 C31 UR04968 UR25947 UR25947 UR04968 UR25947
C32 6800/25 4700/35 4700/35 6800/25 4700/35
(13) s41 C29 WN16530 WN16530 WN16530 WJ61020 WN16530
C30 0.01/100 0.01/100 0.01/100 0.01/100 0.01/100
s42 C37 UR04833 UR04833 UR04833 UR04847 UR04833
C38 330/25 330/25 330/25 470/25 330/25
(2) s43 C815 UR03810 UR03810 UR03810 UR03822 UR03810
C816 100/16 100/16 100/16 220/16 100/16
(13) s45 D20 WS69850 WS69850 WS69850 VU17310 WS69850
D21 HZU16B2 HZU16B2 HZU16B2 UDZS16B HZU16B2
s46 D22 WS69980 WS69980 WS69980 VU17340 WS69980
HZU22B3 HZU22B3 HZU22B3 UDZS22B HZU22B3
(2) s47 CB807 X X X VL84470 X
3P
(12) s48 C6 WJ60500 WJ60500 WJ60500 WJ61020 WJ60500
0.01/50 (J) 0.01/50 (J) 0.01/50 (J) 0.01/100 0.01/50 (J)
(6) s49 C728 WJ60500 WJ60500 WJ60500 WJ61020 WJ60500
C729 0.01/50 (J) 0.01/50 (J) 0.01/50 (J) 0.01/100 0.01/50 (J)
C730
s50
(2) IC802 X3505A0 X3505A0 X3505A0 X9127A0 X3505A0
NJM2068MD NJM2068MD NJM2068MD NJM5532M NJM2068MD
IC802, 901: NJM2068MD-TE2
Dual operational amplifier
OUT 1 1 8 +V CC
OUT
–IN 1 2 7 2
+ – + –
+IN 3 6 -IN
1 2
–V 4 5 +IN
CC 2
IC701: M66003-0131FP-R
18 digit 5 x 7 segment VFD controller/driver
Display code
CGROM
RAM
(35-bit x 166) 44 SEG00
(8-bit x 60)
Segment 19 SEG25
Code
write output
17 SEG26
circuit
CGROM
CS 2 Serial dot data 9 SEG34
data write (35-bit x 16)
receive
SCK 3
Code/
SDATA 4 circuit
command
control 45 SEG35
circuit
DIG11/
52
SEG42
DIG12/
51
SEG41
Segment/
code
DIG13/
select Digit 50
SEG40
select/ DIG14/
XIN 7 49
Clock output SEG39
timing Display
generator clock circuit DIG15/
controller scan pulse 48
XOUT 6
SEG38
DIG16/
47
SEG37
DIG17/
46
SEG36
63 DIG00
Digit
RESET 1 output
circuit
Vcc1 8
53 DIG10
Vcc2 18
Vss 5
Vp 64
0 + 1.0 k + 1.0 k + 1.5 k + 2.2 k + 3.3 k + 4.7 k
0 – 0.22 0.23 – 0.64 0.65 – 1.06 1.07 – 1.55 1.56 – 2.09 2.10 – 2.62 2.63 – 3.94
0 – 11 12 – 32 33 – 54 55 – 79 80 – 107 108 – 134 135 – 156
DIMMER
FM MODE SPEAKERS SPEAKERS
(U, C, R, A, L models) MEMORY CLEAR –
INFO A B
TP (G model)
0 + 1.0 k + 1.0 k + 1.5 k + 2.2 k + 3.3 k + 4.7 k
0 – 0.22 0.23 – 0.64 0.65 – 1.06 1.07 – 1.55 1.56 – 2.09 2.10 – 2.62 2.63 – 3.94
0 – 11 12 – 32 33 – 54 55 – 79 80 – 107 108 – 134 135 – 156
PRESET PRESET
FM AM TUNING << TUNING >> –
< >
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
57