Read Panasonic UF-490 Other Service Manuals online
24
1.1.10.
Modem and Peripheral Circuit
This circuit consists of Modem, DAA (Primary/Secondary) and peripheral circuit. This modem conforms to
ITU-T V.34, V.33, V.17, V.29, V.27ter, V.21 channel 2 (FSK), T.4, and T.30. Modem transfers/receives data
from Secondary DAA chip and serial communication. Secondary DAA chip communicates with the line
through Primary DAA chip and its peripheral circuit.
ITU-T V.34, V.33, V.17, V.29, V.27ter, V.21 channel 2 (FSK), T.4, and T.30. Modem transfers/receives data
from Secondary DAA chip and serial communication. Secondary DAA chip communicates with the line
through Primary DAA chip and its peripheral circuit.
Modem
MN195006
To Line
DAA
(Secondary)
Si3021
DAA
(Primary)
Si3015
Monitor
Circuit
Dial
Pulse
Circuit
To Speaker
Modem Circuit Block Diagram
Secondary
Circuit
Primary
Circuit
Click on the first or last page to see other UF-490 service manuals if exist.