Papersize Detection - Epson C11C605001 - DFX 9000 B/W Dot-matrix Printer Service Manual

Service Manual
Paper Size Detection
2.1.3.8
paper size in paper cassette is detected by four mechanical switches. The paper size si~al is
The
analog signal. Table 2-1 is lists the paper size and paper size switches functions.
Paper Size
No paper cassette holder
(Option only)
No paper cassette
MONARCH
LEGAL 13"
Japan Post Card
COM-10
or
A4:
Other ver.
C5
DL
LEGAL 14"
EXECUTIVE: USA ver.
or
B5:
Other ver.
B4
STATEMENT: USA ver.
or
A5:
Other ver.
A3
LEDGER
Rev. A
Table 2-1. Paper Size Detection
Paper Size Switch
.
OFF OFF OFF
OFF OFF OFF
OFF OFF ON
OFF ON
OFF
OFF ON OFF
OFF ON ON
OFF ON
ON OFF
ON OFF O F F O N
ON OFF
ON OFF ON
OFF
ON ON
ON ON ON
Operating Principles
. .
Paper Size Signal Level
O
OFF 0.275 to 0.293
ON
0.554 to 0.583
ON
1.116 to 1.157 VDC
OFF 1.396 to 1.445 VDC
ON 1.680 to 1.730 VDC
OFF 1.962 to 2.015 VDC
2.814 to 2.868 VDC
! 1
OFF 3.098 to 3.152 VDC
ON 3.385 to 3.433 VDC
OFF 3.671 to 3.715 VDC
OFF 4.247 to 4.276 VDC
2-21