Integra DTR-8.8 Service Manual page 29

A B
Q Q
3 7 6 3 1 5 1 5 0
SCHEMATIC DIAGRAMS-22(SD-22)
NETWORK SECTION-3
NALAN-9121(3/8)
U44 LAN PC BOARD
1
R320
D6 1 8
D14 2 7
D7 3 6
D15 4 5
R323
D0 47 1
2
D8 2
D1 3
D9 4
R326
D4 1 8
D12 2 7
D5 3 6
D13 4 5
D2 1 R329
47
D10 2
D3 3
D11 4
R431
FL_WP
0
R332
T E
L 1 3 9 4 2 2 9 6 5 1 3
3
4
<Note>
SD-x:XY is short for Shcematic Diagram-x and
each socket's location, X=A to H, Y=1 to 5.
NOTE
!
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY.
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
w w w
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
5
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF, 330- 33pF, 331- 330pF, 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE .
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
C
55
A25/NC
56
A24/NC
1
A23/NC
R315
2 A23
A22
15 0 A22
A21
48 12 A21
DQ6 A20
49 11 A20
DQ14 A19
50 18 A19
DQ7 A18
51 19 A18
DQ15/A-1 A17
8 35 54 A17
DQ0 A16
7 36 3 A16
DQ8 A15
6 37 4 A15
DQ1 A14
5 38 5 A14
DQ9 A13
47 44 6 A13
DQ4 A12
45 7 A12
DQ12 A11
46 8 A11
DQ5 A10
47 9 A10
DQ13 A9
8 39 10 A9
DQ2 A8
7 40 20 A8
DQ10 A7
6 41 21 A7
DQ3 A6
5 42 22 A6
DQ11 A5
47 23 A5
A4
24 A4
A3
25 A3
A2
26 A2
A1
31 A1
A0
16 +3.3V
WP/AAC
10K
17 53
RY/BY BYTE
Q212
M29W128FL-70N6E
+3.3V
FLASH ROM
29
VIO
30
NC
27
NC
+3.3V 28
NC
43 34 G RD
VCC OE
13
WE
32 E CS0
CE
52
VSS
R339
33 14
VSS RESET
0
+3.3V
x a o
y
i
http://www.xiaoyu163.com
D E
8
Q Q
3 7 6 3
u 1 6 3
.
http://www.xiaoyu163.com
F G
2 4
9 9 8
1 5 1 5 0 8 9 2 4
R385
0
m
c o
DTR-8.8
H
2
9 9
DATA BUS [0:63]
ADDRESS BUS [0:23]
TO SD-25:B1
9 8 2 9 9
XCS0
XRD
TO SD-25:G4
XWE
XRESET TO SD-27:B4