4-18 120 Series Maternal/Fetal Monitor Revision B
2015590-001
Theory of Operation: Main Motherboard
Table 4-8. Recorder Board Connector J9
PIN NUMBER Signal Name Signal Type Signal Description
1 No Connection — —
2 STB4/ Output Strobe Line for 4th Set of 256 Dots (1024 element)
3 PLOW/ Input Paper Low Line
4 STB3/ Output Strobe Line for 3rd Set of 256 Dots (1024 element)
5 POUT/ Input Paper Out Line
6 STB2/ Output Strobe Line for 2nd Set of 256 Dots (1024 element)
7 DOOR Input Door Closed Line (Not Used)
8 STB1/ Output Strobe Line for 1st Set of 256 Dots (1024 element)
9 GND Output Ground
10 BEO Output Printhead Enable Line
11 RECLK Output Recorder Serial Clock (2.5 MHz)
12 LD/ Output Recorder Load Line
13 GND Output Ground
14 RES/ Output System Reset Line
15 RECDATA Output Recorder Data Line
16 HDSHUT/ Output Recorder Head Power Supply Shutdown Line
17 P2 Output Stepper Motor Phase 2
18 P4 Output Stepper Motor Phase 4
19 P1 Output Stepper Motor Phase 1
20 P3 Output Stepper Motor Phase 3
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