Summary of Product
Service Manual
4-21
Samsung Electronics
4.7 USB Host
The USB Host PBA provides power to the USB connector to enable a USB Memory drive to be used in conjunction with
the USB Direct printing and Scan to USB functions.
4.6 OPE PBA
The OPE board consists of various function keys and an LCD to display set status and operator messages.
A MICOM (HOLTEC HT48R50) drives the LEDs and LCD. Communication between the OPE and the CPU
on the main board is serial (related signals are /Reset, TXD, and RXD).
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