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IC2 A0-17 SRAM 1Mbit D0-D7 RD WR

IC4 A0-14

ROM 4Mbit

D0-D7

RD

TO ANALOG BOARD

ANALOG PORT CONTROL

24MHz RD WR A0-17 D0-7 RD WR IC5 TX MODEM TONE RX VOL

+24V CPU

TO CIS ASIC IC1

Q11

OSC

LED ON

ANALOG SW

TX

Q7

CIS ON

RX

CLK, SIG 256kbit ROM OP-PANEL I/F 32.256MHz

A/D

IMAGE PROCESSING

+24V

H/SRX

64kbit SRAM

FET RTC MOTOR I/F KRXD, KTXD, KLATCH, KSCLK, KSTART

THON

PRINTER CONTROL

STB1, 2, 3, THLAT THCLK, THDAT T2-T5 32.768kHz MOTOR DRIVER IC7

XRESETI

+5V

XWDERR

TO THERMAL HEAD

SP-OUT

CN9

RESET IC3

SP-AMP IC12

TO OPERATION PANEL

TO MOTOR TO SPEAKER KX- FT902FX-B DIGITAL BOARD:BLOCK DIAGRAM