Sharp FO-475TH Service Manual page 47

UX-258TH
FO-475TH
(2) Panel control block
The following controls are performed by the FC200.
•
Operation panel key scanning
•
Operation panel LCD display
(3) Mechanism/recording control block
•
Recording control block diagram (1)
OPERATOR
PANEL,
PANEL/LCD PWB
KEYPAD,
LEDS & LCD
PRINTER DATA
THERMAL HEAD
CONTROI &
SENSORS
PRINTER &
MOTOR
SCANNER
MOTOR DRIVERS
SCANNER
CONTROLS &
SENSORS
CIS
SCANNER
VIDEO
PREPROCESSING
SYNC PORTS (2)
(SSIF)
GENERAL
PURPOSE I/O
SYNC/ASYNC
SERIAL
PORT
OPO[7:0]* TEST
OPI[3:0]* BATRSTN
LEDCTL* RESETN
LCDCS*
TONE/ALTTONE
TSTCLK
STRB[3:0]
STRBPOL REGDMA
THADI WAITN
PDAT SYNC
PCLK PWRDWNN
PLAT
PM[3:0]* XIN
XOUT
SM[3:0]*
SYSCLK
START MIRON
MCSN
CLK2
CLK1
EXTENDED
CLK1N
FACSIMILE
VIDCTL[1:0]
CONTROLLER
FC200
VIN
+VREF
A[23:0]
–VREF
D[7:0]
RDN
SSCLK[2:1]* WRN
SSTXD[2:1]* ROMSCN
SSRXD[2:1]*
SSSTAT[2:1]* CS[5:0]N*
WRPROTN
FRDN*
GPIO FRWN*
FCLE*
FCS[0:2]
DEBUGN
SASCLK VDD
SASTXD VDRAM
VBAT
SASRXD
VSS
TXOUT
RTC
CRYSTAL
MONOFAX
A[4:0]
FACSIMILE
D[7:0]
MODEM
RDN
WRN
GPIO
CAS[0,1]N,RASN,DWRN
FLASH MEMORY
Fig. 4
5 – 5
TELEPHONE
LINE
RXIN
SPEAKER
LINE
MICROPHONE
INTERFACE
CIRCUIT
ANALOG
SWITCH
RIN
SPKR
RXDAT
TXDAT
RMODE
XIA
TMODE
CLKIN
SLEEPN
GPIO
DRAM
(OPTION)
NOTES:*ALTERNATIVE GPO,GPI OR GPIO LINES
SPEAKERPHONE ONLY
VOICE OR SPEAKERPHONE