Print Head Driver - Fujitsu ULTIMA90 Maintenance Manual

[CSF short-circuit protection circuit]
If abnormal current flows to +40V for some reason, the fuse is blown to prevent +40 V from being supplied from
the main board (HGC07**).
FPGA
FPGA
FE2-12E-5FN484C
Figure 5.3.19 Open/close, APTC and CSF motor drive circuit block diagram

5.3.6 Print Head Driver

Figure 5.3.20 is a print head drive circuit block diagram.
+40V
APTC motor
drive circuit
APTCM0-3
Open/close
motor rive
HCPPM0-3
circuit
Front CSF
drive
FCSFM0-3
circuit
Rear CSF
drive
RCSFM0-3
circuit
162
APTC motor
M
Open/close motor
M
Front CSF motor
M
Rear CSF motor
M