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Y103920-3
Service Manual
92
4) Signal Level
• MARK polarity
:
-3V to -15V (LOGIC = 1)
• SPACE polarity :
+3V to +15V (LOGIC = 0)
5) Interface Circuit
a)
Receiving Circuit
14C232 or equivalent
INPUT
OUTPUT
+3V
-3V
+9V
-9V
OUTPUT
45 ns
55 ns
14C232 or equivalent
INPUT
OUTPUT
+3V
-3V
INPUT
+12V
-12V
b)
Sending Circuit
Note:
The signal levels described above is for the case where 3K ý x 15pF is connected to the
terminal.
6) Receive Margin
37% min. at all reception rates.
7) Communications Protocol
a)
READY/BUSY protocol
b)
X-ON/X-OFF protocol
Summary of Contents for PG L22 Special
Page 1: ...PG L22 Special Printer SERVICE MANUAL Code Y103920 3...
Page 18: ...Y103920 3 Service Manual 18 Upper cover unit Figure 2 2 Upper cover...
Page 136: ...Y103920 3 Service Manual 136 6 PARTS LIST Figure 6 1 Multi Purpose Feeder 9 5 7 6 4 1 2 3 8...
Page 137: ...Y103920 3 Service Manual 137 Table 6 1 Multi Purpose Feeder...
Page 151: ...Y103920 3 Service Manual 151 Table 6 1 High Capacity Paper Feeder...
Page 164: ......
Page 165: ...UPDATINGSTATUS DATE UPDATEDPAGES PAGES CODE 12 2004 1ST EDITION 165 Y103920 3...