Service manual

43
Switches A-1 and A-2: RAM Usage
These switches determine how to use the RAM memory, as shown
below:
A-1 A-2 Download Input Buffer Line Buffer
ON ON Disabled 7 K-Byte 2 Lines
OFF ON Disabled 16 K-Byte 1 Line
OFF OFF Enabled 256 Bytes 1 Line
Switch A-3: Auto LF with CR
If you leave this switch at the ON position, a separate line-feed code is
required from your computer to obtain a line feed.
If you move this switch to the OFF position, the printer performs both
a carriage return and line feed each time it receives a carriage-return
code.
Most computer systems send a line feed code, or both a carriage return
and line feed, at the end of each line, so this switch should be left ON.
If you get double line spacing when you expect single spacing, or if
lines overprint each other, try changing the setting of this switch.
Switch A-4: Auto Sheet Feeder
In order to use the optional automatic sheet feeder (SF-10DV),
move this switch to the OFF position.
Otherwise leave it ON.
Switch A-5: Graphics Direction
When printing in graphics mode, the printer may either print bi-
directionally (in alternate directions) for speed or in one direction only
(uni-directional for increased accuracy). For practically all purposes,
however, bi-directional printing is sufficiently accurate.
Switch B-2: Paper-out
When this switch is OFF the printer ignores the paper-out detector
and prints down to (and beyond) the bottom edge.