IBM 4247

Table 53. Module Reference List (continued)
Board Position Module Name Function
U27 L295 Needle 04 row b
Needle 05 row b
U25 L295 Needle 07 row b
Needle 01 row b
Q6, Q2 BDX53C-363–2D Moving ruby coil
U18 HC4052 Paper presence sensors
Carriage home position sensor
Thermal printhead sensor
U11 74LS241 Operator panel
Mechanical options (ASF, etc.)
U3, U10 74ALS245, 74LS241 Parallel interface
Notes
1. The bin motor drivers and the paper stacker paper path selector can be found on the board which is located
inside the paper stacker option.
2. The paper stacker motion driver and the tractors motion drivers are the same as the paper motor driver.
Chapter 5. Removals and Adjustments 389