207
6.2.7
Line Control Circuit
The Line Control Circuit consists of CML relay, DP circuit, DAA (Direct Access Arrangement), Ring Detect
Circuit for power-save and DC hold circuit. A Jack for an external telephone, which can be used for either
an external telephone or an optional Handset Kit. The block diagram of the Line Control Circuit is shown
below.
DP Control
Ringer Signal Detection,
TAM I/F,
DTMF Remote Detection
Off-Hook
Detection
Speech
IC
DAA
Line
I/F
Si3015
(IC23)
DP
Circuit
DC Hold
Circuit
Ringer Signal
Detector
for Wake-up
(PC2)
Ringer
IC
+
-
~
~
Hook SW
External
Telephone
Jack
Connect only to
one module
Line
CML Relay
Optional Handset Kit
+
-
~
~
DAA
Control
I/F
Si3021
MODEM
MN195006
CPU
PNL
10MW
Line Control Circuit
MJR PCB
SC PCB
(IC24)
Summary of Contents for Facsimile UF-590
Page 17: ...17 1 4 Control Panel For USA and Canada UF 790 UF 780 790 780 ...
Page 18: ...18 For Other Destinations UF 590 UF 580 ...
Page 27: ...27 10 Remove 2 P6A Bushings 316 11 Remove the Eject Roller 303 10 11 ...
Page 33: ...33 11 Remove 2 Screws 4N 12 Remove the Paper Feed Rollers 518 11 12 ...
Page 294: ...294 4 3 2 1 D C B A 1 2 3 4 Drawing Name HVPS 2 4 Model UF 580 590 780 790 ...
Page 295: ...295 4 3 2 1 D C B A 1 2 3 4 Drawing Name HVPS 3 4 Model UF 580 590 780 790 ...
Page 296: ...296 4 3 2 1 D C B A 1 2 3 4 Drawing Name HVPS 4 4 Model UF 580 590 780 790 ...
Page 297: ...297 4 3 2 1 D C B A 1 2 3 4 Drawing Name LVPS 1 1 Model UF 580 590 780 790 ...
Page 298: ...DZZSM00158 ...