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UF-E1
1
1 General Operation
1.1.
Facsimile Basic Operation
1.1.1.
Transmission Operation (Single Page)
No.
Operation
Refer to Page 3
Operation
Signal Route
1
Document Sensor detects document.
1
(17)
2
Telephone number of receiver side is sent to PSTN Line.
Dial pulse is produced by NCU PCB.
DTMF tone is produced by Modem.
Dial pulse is produced by NCU PCB.
DTMF tone is produced by Modem.
25
17
17
(8)
(6), (7), (8)
(6), (7), (8)
3
Modem receives and sends several signals for pre-message proce-
dure.
dure.
15, 18
29
29
(6), (7), (8)
(8), (7), (9), (10)
(8), (7), (9), (10)
4
The document is fed to scanning Point Sensor by Tx Motor.
2, 3
(17)
5
CIS is driven by SC PCB and changes from photo signal to electronic
signal.
signal.
4
(17)
6
CIS provides Scanning Data to SC PCB.
(1)
7
Off-set circuit adjusts black level of scanning Data to 0V.
5
8
ABC (Automatic Background Control Circuit) stabilizes white level of
Scanning Data to about 3V.
Scanning Data to about 3V.
6
9
A/D converter converts from Analog Scanning Data to 6 bit Digital sig-
nal (64 level half tone).
nal (64 level half tone).
7
10
Binary Coding Circuit fixes Scanning Data (64 level of half tone) to
white or black (Image Data).
white or black (Image Data).
8
11
Serial/Parallel Circuit converts serial Image Data to 8 bit Parallel Data
for transferring to bus line.
for transferring to bus line.
9
12
One line of Image Data is transferred to Line Memory.
10
(2)
13
The picture data is decoded to MH.
11
(3)
14
Coded Data is transferred to Buffer Memory.
12
(4)
15
Whenever Modem requests next Coded Data, 8 bits coded data is
transferred to Modem.
transferred to Modem.
(5)
16
Coded Parallel Data is converted to Serial Data by Modem.
14
17
Modem converts digital data to analog data in order to sent data to
PSTN (Analog) line.
PSTN (Analog) line.
15
18
Output level against PSTN Line is adjusted by Modem and OP Amp. 16, 19
19
Analog Data is sent to PSTN through several Amp and NCU PCB.
20, 21
(6), (7), (8)
20
Scanning Point Sensor turned off and Scanning is finished.
3
(17)
21
Modem sends and receives some signal for Post-message procedure. 18
29
(6), (7), (8)
(8), (7), (9), (10)
(8), (7), (9), (10)
22
The document is ejected.
2
(17)
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