Brother HL-1870N - Engine I;O; 1.3.10 Panel I;O

HL-1850/1870N SERVICE MANUAL
3-13
1.3.9 Engine I/O
Fig. 3-19 shows the engine interface circuit. The interface with the engine PCB is by full-
duplex synchronous serial method.
Fig. 3-14
1.3.10 Panel I/O
Fig. 3-15 shows the panel interface circuit. The interface with the panel PCB is by full-duplex
synchronous serial method.
HL-1850
HL-1870N
HL-1850
HL-1870N