Brother FAX 1840C, Service Manual

Page: 362 / 401

App. 4-50 Confidential
WSW47
(Switching between high- and full-speed USB)
Selector
No.
Function Setting and Specifications
1
Handling paper at the
occurrence of a paper feed
timing error
(Not used.)
0: Eject paper w/o print 1: Print on the current
paper
2 Not used.
3
4
Delay of FAX line
disconnection when switching to
the pseudo-ringing external
telephone
No. 3 4
0 0 : 200 ms
0 1 : 400 ms
1 0 : 700 ms
1 1 : 1000 ms
5
Disable the ringer of external
telephone at non-ring reception
0: No 1: Yes
6 Not used.
7
Disable the ringer of external
telephone with CAR signal when
caller ID service is available
0: No 1: Yes
8
Switching between high-speed
USB and full-speed USB
0: Auto switching between 1: Fixed to full-speed
high-speed USB (ver. 2.0) USB (ver. 1.1)
and full-speed USB (ver. 1.1)
NOTE: Selector 1 is applicable only to models equipped with flat-bed scanners.
NOTE: Selectors 3 and 4 are applicable only to models supporting pseudo-ringing of a connected
external telephone.
l
Selector 1: Handling paper at the occurrence of a paper feed timing error
When feeding paper to the print start position, the machine might cause a feed timing error so that
the registration sensor goes ON signaling the presence of paper. This selector determines whether the
machine prints on the current paper or ejects the current paper without printing and prints on the
next paper.
l Selectors 3 and 4: Delay of FAX line disconnection when switching to the pseudo-ringing external
telephone
When the machine receives a phone call, it can make the connected external telephone ring (so called
pseudo-ringing). During pseudo-ringing, if you pick up the handset of the external telephone, the line
might be disconnected due to cut-off of the line current.
To hold the line, the machine may supply line current by making use of the pulse generator circuit
that forms a parallel loop. This way the FAX line disconnection may be delayed. These selectors
determine the delay period.