Yamaha RX-Z9 Service Manual page 113

A B
PRINTED CIRCUIT BOARD (Foil side)
1
RS-232C
2
16 1
9 8
7
75
24 1
3
51
48
25
4
NOTE)
The 1394 P.C.B. actually has a four-layer pattern structure (part face pattern, internal pattern
1, internal pattern 2 and solder face pattern) but it is shown as "part face pattern + solder face
pattern" in this diagram.
NOTE)
5
6
C
1394 P.C.B.
CONTROL OUT REMOTE
2 1
2 1 IN OUT IN
5 1
4 3
5 1
3
4
14 1
3 4
1 5
8 7
1
176
8 1
5 1
5 4
76 100
1
25 36
24 37
133
13 48
12
25
132
50
26
1
10 10
20 11 20 11
1
5
1 3
5 4
4 3
D E
S400
(AUDIO)
0V
6
44
45
0V
88
89
F G
Point y (Pin 53 of IC8)
V : 2V/div, H : 40nsec/div
DC, 1 : 1 probe
Point u (Pin 86 of IC10)
V : 2V/div, H : 40nsec/div
DC, 1 : 1 probe
H
RX-Z9/DSP-Z9
113