IBM 4247

Table 33. 26-Pin Printhead Connector
(9-Wire Printhead)
Pin Names Pin Names
1 Wire 9 Coil 2 Not Used
3 Wire 9 Coil 4 Not Used
5 Thermal
Sensor Ground
6 Thermal
Sensor
7 Wire 2 Coil 8 Wire 2 Coil
9 Wire 3 Coil 10 Wire 3 Coil
11 Wire 4 Coil 12 Wire 4 Coil
13 Wire 8 Coil 14 Wire 8 Coil
15 Wire 7 Coil 16 Wire 7 Coil
17 Wire 6 Coil 18 Wire 6 Coil
19 Wire 5 Coil 20 Wire 5 Coil
21 Wire 1 Coil 22 Wire 1 Coil
23 Ribbon Lift Pin
2
24 Ribbon Lift Pin
3
25 Ribbon Lift Pin
1
26 Ribbon Lift Pin
4
Carriage Motor Wiring
The carriage motor is a stepper motor with a 1.8° step angle. The motor connects directly to the logic board.
RESISTANCE MEASUREMENTS
Chapter 3. Circuit Diagrams 246