Parts/Test Point Locations 151
System Board Connector Pin Signals
Monitor Port Signals
Serial Port Signals
Parallel Port Signals
Pin Signal Name I/O Pin Signal Name I/O
1 Red Video O 9 +5 V dc
2 Green Video O 10 Synch Ground
3 Blue Video O 11 Monitor ID Bit 0
4 Monitor ID Bit 2 I 12 SDA I
5 Synch Ground 13 Horizontal Synch O
6 Red Ground 14 Vertical Synch O
7 Green Ground 15 SCL I
8 Blue Ground
Pin Signal Name I/O Pin Signal Name I/O
1 Data Carrier Detect I 6 Data Set Ready I
2 Receive Data I 7 Request To Send O
3 Transmit Data O 8 Clear To Send I
4 Data Terminal Ready O 9 Ring Indicator I
5 Signal Ground
Pin Signal Name I/O Pin Signal Name I/O
1 Strobe O 14 Auto Feed N/A
2 Data Bit 0 I/O 15 Error I
3 Data Bit 1 I/O 16 Initialize O
4 Data Bit 2 I/O 17 Select (In) O
5 Data Bit 3 I/O 18 Ground P
6 Data Bit 4 I/O 19 Ground Power
7 Data Bit 5 I/O 20 Ground Power
8 Data Bit 6 I/O 21 Ground Power
9 Data Bit 7 I/O 22 Ground Power
10 Acknowledge I 23 Ground Power
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