Reset Circuit; Cdcc I/O - Brother HL-820 Service Manual

1.3.8

Reset Circuit

HL-820/1020/1040
The reset IC is a PST598DNR. The reset voltage is 4.2V (typ.) and the LOW period of
reset is 200ms (typ).
HL-1050
The reset IC is a PST596DNR. The reset voltage is 4.2V (typ.) and the LOW period of
reset is 50ms (typ).
1.3.9

CDCC I/O

HL-820/1020/1040
Fig. 2-21 shows the CDCC interface circuit.
Fig. 2-19
Fig. 2-20
Fig. 2-21
II-19