Yamaha RX-V495, Service Manual

Page: 41 / 68

DSP-R495/RX-V495/RX-V495RDS/HTR-5140/HTR-5140RDS
44 45
B A C D E F H G
1
2
3
4
5
6
■
PRINTED CIRCUIT BOARD (Foil side)
P. C. B. DSP P. C. B. DSP
Ref. No. Location
D1 F3
D2 F3
D3 G4
D4 G4
D5 G4
D6 G4
D7 G4
D8 G4
D9 F4
D10 G4
D11 G4
D12 G4
D13 D4
D14 D4
D15 D4
D16 D4
D17 D4
● Semiconductor Location
Ref. No. Location
IC1 B3
IC2 E3
IC3 B4
IC4 A3
IC5 A3
IC6 C4
IC7 D4
IC8 C3
IC9 C3
IC10 D3
IC11 D3
IC13 C3
IC14 B3
IC15 B3
Ref. No. Location
Q1 H4
Q2 G4
Q3 G4
Q4 H3
Q5 G3
Q6 G3
Q7 G3
Q8 G3
Q9 G3
Q10 G3
Q11 G3
Q12 H3
Q13 G3
Q14 D4
6
5
1
16
M5M51288BKJ-20L
TEL
17
32
LC87F5164A
41 60
20 1
61
80
40
21
1 30
YSS908-F
51
50
80
81
31
100
1 11
AK4526
23
22
33
34
12
44
1 11
YM3436DK
23
22
33
34
12 44
1 12
AK4320
13 24
7 1
HD74HC02FP
14 8
5
8
NJM2904M
IN
COM
OUT
uPC29M331-E1
14
1
4
uPC4570G2
58
1
4
uPC4570G2
5
8 1
4
uPC4570G2
5
8
1
4
uPC4570G2
5
8
1
4
uPC4570G2
58
+5V
–12 +5VD DG LDC/0 ISL0 DG TRQ /SBR
+12
–5V
WCIF
CKIF
STM MTS
CLK OB
TRXOB DG /SBR
TO: INPUT (1)
#3
E FR LFE RR RIN
E
FL
C
RL
LIN
E
R
L
ISL1
DSIG
+15VD
TO: INPUT (3)
#1 #6
TO: INPUT (1)
Point
5
Pin 13 of IC3
V : 2V/div
H : 50nsec/div
AC range 1 : 1probe
2V SAMPLE 50ns
0V
Point
6
Pin 13 of IC4
V : 2V/div
H : 50nsec/div
AC range 1 : 1probe
2V SAMPLE 50ns
0V