Brother MFC620CN Service Manual page 425

Selector
No.
Handling paper at the
1 occurrence of a paper feed
timing error
2 Not used.
Delay of FAX line
3
disconnection when switching
to the pseudo-ringing external
4
telephone
Disable the ringer of external
5
telephone at non-ring reception
6 Not used.
Disable the ringer of external
telephone with CAR signal
7
when caller ID service is
available
Switching between high-speed
8
USB and full-speed USB
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.
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.
Selectors 3 and 4: Delay of FAX line disconnection when switching to the pseudo-ringing external
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.
WSW47
(Switching between high- and full-speed USB)
Function
telephone
App. 4-50
Setting and Specifications
0: Eject paper w/o print
No. 3 4
0 0 : 200 ms
0 1 : 400 ms
1 0 : 700 ms
1 1 : 1000 ms
0: No 1: Yes
0: No 1: Yes
0: Auto switching between
high-speed USB (ver. 2.0)
and full-speed USB (ver. 1.1)
1: Print on the current
paper
1: Fixed to full-speed
USB (ver. 1.1)
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