Lan, Modem - EUROCOM M770CU Service Manual

LAN, Modem

LAN (JMC251)
MDC MODULE
2 0, 3 5
2 0, 3 5
2 0
2 0, 3 5
LP 5
*8 P 4 R X 0_ 0 6
1 8
2 7
3 6
4 5
LP 4
#9 4 4 C M-0 0 5 1= P 3
L MX 1 + 4 5
L MX 1 - 3 6
L MX 2 + 2 7
L MX 2 - 1 8
L1 4
1 24
T C T1 MC T 1
LM X 1+ D L MX 1 +
2 23
3 2 L A N _ MD I P 0 T D 1+ MX 1 +
3 22 LM X 1- D L MX 1 -
3 2 L A N _ MD I N 0 T D 1- M X 1-
LM X 2+ D L MX 2 +
4 21
T C T2 MC T 2
5 20 LM X 2- D L MX 2 -
3 2 L A N _ MD I P 1 T D 2+ MX 2 +
6 19
3 2 L A N _ MD I N 1 T D 2- M X 2-
7 18
T C T3 MC T 3
L M X3 + D L MX 3 +
8 17
3 2 L A N _ MD I P 2 T D 3+ MX 3 +
9 16 L M X3 - D L MX 3 -
3 2 L A N _ MD I N 2 T D 3- M X 3-
L M X4 + D L MX 4 +
1 0 15
1 1 T C T4 MC T 4 14 L M X4 - D L MX 4 -
3 2 L A N _ MD I P 3 T D 4+ MX 4 +
D V D D
3 2 L A N _ MD I N 3 1 2 13
T D 4- M X 4-
LF E 92 6 1 -R N M C T _ 1 R 7 1 75 _ 1 %_ 0 4
N M C T _ 2
R 9 6 R 7 0 75 _ 1 %_ 0 4
N M C T _ 3 R 6 9 75 _ 1 %_ 0 4
N M C T _ 4
*0 _ 04 R 6 8 75 _ 1 %_ 0 4
4 0 mil
C 1 8 8 C 18 2 C 1 9 2 C 20 2
. 0 1U _ 16 V _ 0 4 . 0 1 U _ 1 6 V _0 4 . 0 1U _1 6 V _ 0 4 . 0 1 U _ 1 6V _0 4 LP 3
#9 4 4 C M-0 0 5 1= P 3
L M X4 - 1 8
L M X4 +
2 7
L M X3 - 3 6
L M X3 +
4 5
LP 6
*8 P 4 R X 0_ 0 6
4 5
3 6
2 7
1 8
J_M DC1
1 2 1 1
2 1
3. 3 V
20 MIL
J_ M D C 1
1 2
G N D R E S E R V E D
R 4 8 0 3 3 _ 04 H D A _ S D OU T_ R 3 4
H D A _ S D O U T 10mil
A za l i a _ S D O R E S E R V E D
5 6 M D C _3 . 3 V
G N D 3. 3V M a i n / a u x
R 4 8 1 3 3 _ 04 H D A _ S Y N C _R 7 8
H D A _ S Y N C
A za l i a _ S Y N C GN D
R 5 0 1 2 2 _ 04 H D A _ S D I N 1 _ R 9 10
H D A _ S D I N 1 A za l i a _ S D I GN D
H D A _ R S T# _ R H D A _B I TC L K _R
R 4 8 2 3 3 _ 04 11 12
H D A _ R S T #
A za l i a _ R S T # A za l i a _ B C LK
88 0 1 8-1 2 0 G C 6 1 1
GN D . 1 U _ 1 0 V _X 7 R _ 0 4
G N D
H 13 H 12
H 6_ 0 B 4 _ 7D 3_ 7 H 6_ 0 B 4 _7 D 3_ 7
G N D G N D
D LM X 1+
D LM X 1-
D LM X 2+
D LM X 2-
J _ R J _ 1
1 G N D 1
D A + s hi e l d
2 G N D 2
D A - s hi e l d
3
D B +
6
D B -
4
D C +
5
D C -
7
8 D D +
D D -
C 1 00 9 1 -10 8 A 4
N M C T _ R
C 1 70
1 0 0 0P _2 K V _ 1 2
D LM X 4-
D LM X 4+
D LM X 3-
D LM X 3+
3 . 3V
L5 2 H C B 1 00 5 K F -1 2 1T 2 0
R 5 05 3 3_ 0 4
H D A _ B I T C L K 2 0 , 3 5
C 6 12
* 2 2P _ 5 0 V _ 04
D V D D 3 2
3 . 3 V 3 , 4, 1 2 , 1 3, 2 0 , 2 1 , 22 , 2 4 , 25 , 2 7 , 29 , 3 0 , 3 1, 3 2 , 3 3, 3 7 , 3 9, 40 , 4 1
1 . 5 V 4 , 9, 1 0 , 1 1, 3 7 , 4 0 , 42
3 . 3 V S 2 , 10 , 1 1 , 12 , 1 3 , 1 4, 2 0 , 2 1, 2 2 , 2 3, 2 4 , 2 5 , 26 , 2 7 , 29 , 3 0 , 31 , 3 2 , 3 3, 3 5 , 3 6, 3 7 , 4 2 , 43 , 4 4 , 46
Schematic Diagrams
Sheet 34 of 55
Lan, Modem
LAN, Modem B - 35