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
Summary of Contents for 4247
Page 1: ...4247 Printers Maintenance Information Document Number SA24 4400 05 Part Number 27P8450 IBM ...
Page 241: ...e90apc15 Figure 24 Main Input Power Supply Ground Chapter 3 Circuit Diagrams 241 ...
Page 257: ...Figure 32 Stacker Motor Wiring Chapter 3 Circuit Diagrams 257 ...
Page 261: ...Stacker Cable Wiring Figure 36 Tractor Assembly Cable Wiring Chapter 3 Circuit Diagrams 261 ...