Liu Board; Ope Board - Ricoh B173 Service Documentation

LIU BOARD

6.7 LIU BOARD
LIU board is a line interface unit, and circuit to interface with a telephone line.
There is a ring-detect circuit to detect a ring signal from a switchboard. In addition
there is a surge absorber to protect the machine during lightning storms.

6.8 OPE BOARD

OPE board has different function keys and LCD to show key operations.
B173 6-14 SM