Service manual

UX-340L/UX-345L
UX-330L
Modem block 3/6
6 – 3
1
2 6
4
3
5
BDEFG
I
HCA
BDEFG
I
HCA
1
2
6
4
3
5
D7
A0
C125
0.01
R136
270
D6 D5 D4 D3 D2 D1 D0
A1 A2 A3 A4
56 57 58 59 60
RS4 RS3 RS2 RS1 RS0
8
D7
9
D6
10
D5
11
D4
12
D3
13
D2
14
D1
15
D0
54
CS
55
READ
53
WRITE
52
IRQ
70
XCLK(12M)
71
YCLK(6M)
64
RTS
78
CTS
79
DCLK
82
DCLKI
73
RXD
95
TXD
96
RLSD
67
PORI
65
EN85
DG
61
75
76
94
93
91
72
23
50
6
7
16
66
77
80
81
89
92
97
22
L102
BK2125HM601
C124
1
GP13
GP16
GP17
GP19
GP20
GP21
+5VD1
0VD1
0VD1
0VD2
0VD2
0VD2
0VD2
0VD2
0VD2
0VD2
0VD2
0VD2
0VD2
C137
1
+5VD2
L103
BK2125HM601
+5VA
0VA 0VA 0VA 0VA 0VA
46
ADOUT
ADIN
RCVO
RCVI
RAMPIN
AGD
SWGAIN0 SWGAIN1
N.C. N.C. N.C.
17 21 30 43 47
C149
0.1
35 87 98 37 45 49 18 48 42 44 88 99 24 19 27 29 31 32
C3
47/25
R155
3
R137
0
MAG
N.C.
33
SIGRX
5
4
3
2
1
100
63
38
39
40
85
25
83
26
74
84
86
90
68
GP07
GP06
GP05
GP04
GP03
GP02
GP11
TXLOSS2
TXLOSS1
EYECLK
ECLKIN1
EYESYNC
SYNCIN1
SYNCIN2
EYECLKX
EYEX
EYEY
XTLI
DPMITE
RCVOL
VREFCONT
(5-5F)
(5-3A)
(6-1B)
R141
MAG
X2 24.00014MHz
C113
15P
R126
120
C123
18P
R125
200
69
XTLO
N.C. N.C. N.C.
DG
(6-3A)
VOLB
LEDON
DG
D[7~0] RD WR
(1-6H)
(1-3H)
(1-3I)
(1-3I)
DG
C114
R138
(6-1I)
DG
62
N.C.
VOLA
N.M.
DG
C127
N.M.
51
RXIN
41
DAIN
34
AOUT
N.C.
28 20
N.C. N.C. N.C.
DAOUT
TXOUT
MAG
C136
1
C126
390P
C135
0.1
R139
47.5K
AGD
(6-3A)
SIGTX
(6-5A)(6-5E)
36
BYBASS
N.M.
DG
R128
N.M.
CNLIUB-3
TXMUTE
MIRQ
(1-6F)
A[4~0]
(1-5I)
MDMRST
(1-5A)
MCS
MAG
R127
33K
TXLOSS3
(1-3A)
BYPASS
R113
10K
(4-5D)
DRSNS
(5-4B)
CISCHK
(4-6D)
CSWI
CNLIUA-7
CNLIUA-6
PIN
PE
R111
270
R112
270
R117
30K
R118
100K
R114
30K
R115
30K
R191
R192
N.M.
N.M.
R120
R121
RA1
270x4
C115
C116
C128
N.M.
CNLIUB-2
RCVOL2
CNLIUB-5
(6-1I)
IC6
R96DFXL-CID
+5V
+5V
+5V