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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