Print Control Section (Prt-11 Board); Fan Motor Drive Circuit - Sony UP-D2500 Service Manual

4-2. PRINT CONTROL SECTION (PRT-11 BOARD)
Outline
PRT-11 board is consisted of mechanism control block and head control block.
The mechanism control block is composed following circuits.
Fan motor drive circuit
Ribbon motor drive circuit
Paper supply motor drive circuit
Head motor drive circuit
Tray motor drive circuit
Platen motor drive circuit
Various kinds sensor detection circuit
( Paper ejection motor drive circuit )
The head control block is composed following sections.
¥ correction ROM(IC206)
PQC IC(IC207)
Head control IC(IC208)
Number lines correction IC(IC210)
4-2-1. Fan motor drive circuit
Fan motor is driven by the control signal from pin 80 of IC112(CPU). When the temperature of
thermal head is higher than the certain value in the printing or stand-by mode, this signal is set to
the "LOW", the fan motor is rotated.
12V
TO FAN MOTOR yf c133
CNO17 1PIN ig,
CNO17 2PIN
10113 (5/6)
SN74HC14ANS-E05
10112 BOPIN