Brother DP-525CJ - RS-232 C I;F Circuit; Fig. 2.8 RS-232 C I;F Circuit

THEORY
Electrical
SERVICE MANUAL
2-10
5.10. RS-232C I/F Circuit
The RS-232C I/F circuit is shown in Fig. 2.8. The driver IC (#1) converts the signal level
(+5V –
±
0V) on the main PCB to the RS-232C signal level in the external line and vice
versa.
Fig. 2.8 RS-232C I/F Circuit