35
UF-5500 / 4500
6.3.4.
TEL Line Section
Composed of ITS circuit and NCU circuit.
6.3.4.1.
Description of Block Diagram in Analog Section
Function
The analog section works as an interface between the telephone line.
DAA control ITS circuit and NCU circuit.
DAA control signals are output from Soc IC300.
Circuit Operation
[NCU]: Network Control Unit the NCU comprises of the following; DC loop forming circuit to connect with the telephone line;
Switching circuit for other interconnected telephones; Bell detection circuit; Remote fax activation circuit.
Refer to
(P.36) for the details.
6.3.4.2.
Block Diagram
RING
ARXD
ATXD
BTXD
BRXD
IC200
IC100
IC101
EXTRLY
T
R
T
R
SP(+)
SP(-)
)
)
HS_SP(+)
HS_SP(-)
15
5
6
5
6
10
9
8
9
15
1
16
14
12
1
3
13
4
5
10
16
MAIN BOARD BLOCK DIAGRAM
Содержание UF-4500
Страница 180: ...180 UF 5500 4500 ...
Страница 248: ...248 UF 5500 4500 13 5 Test Chart 13 5 1 ITU T No 1 Test Chart ...
Страница 249: ...249 UF 5500 4500 13 5 2 ITU T No 2 Test Chart ...
Страница 281: ...281 UF 5500 4500 10 10 11 15 12 17 18 19 20 21 22 23 24 28 29 30 27 25 26 21 13 14 16 30 ...
Страница 287: ...287 UF 5500 4500 130 131 132 133 134 135 136 137 138 139 140 141 PCB2 A UF 5500 only CN1 ...
Страница 289: ...289 UF 5500 4500 PCB8 PCB4 160 161 163 162 164 167 168 171 177 178 172 173 174 173 176 169 170 162 164 A A 165 ...
Страница 297: ...297 UF 5500 4500 ...
Страница 305: ...305 UF 5500 4500 ...
Страница 309: ...309 UF 5500 4500 A1 A3 A4 A6 A7 A8 A9 A10 P1 P2 P3 P4 P5 P6 P7 P8 P7 Drum Cartridge Toner Cartridge P9 A11 ...
Страница 311: ...311 UF 5500 4500 501 502 503 504 506 507 505 508 509 511 510 514 513 512 P51 P53 P54 A51 P52 ...
Страница 362: ...362 UF 5500 4500 ...
Страница 365: ...365 UF 5500 4500 Published in Japan ...