Brother SC-2000 Service Manual page 131

Stamp ID
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
The size detection circuit reads the ON/OFF status through key scanning. It also
detects the ribbon cassette and the open cover, and reads the ON/OFF status of
the Mode and Set keys through key scanning.
Fig. 3.15 shows the size detection, ribbon cassette, open cover detection, and key
scanning circuit.
Size Status of the detection switches
0
¢
1060
¢
-
¢
-
¢
-
¢
-
¢
-
¢
-
¢
3458
¢
1850
¢
2260
¢
2770
¢
4090
¢
-
¢
-
¢
-
¢
Draft sheet
III - 13
1 2 3
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¢ r r
¢ r ¢
¢ ¢ r
¢ ¢ ¢
¢ ¢ r
¢ ¢ ¢
¢ ¢ r
¢ ¢ ¢
¢ ¢ r
¢ ¢ ¢
4 5
r r
r r
¢ r
¢ r
r ¢
r ¢
¢ ¢
¢ ¢
r r
r r
¢ r
¢ r
r ¢
r ¢
¢ ¢
¢ ¢