Main Board - Kyocera Mita KM-1500 Service Manual

2-3-1 Main board

2.5V Regulator
+5V +2.5V
Xtal (VIDEO)
17.483375MHz
Xtal (CCD)
14.798200MHz
ASIC debugger I/F
DBOUT7-0
DBOUT7-0
DQM3-1, RASN, CASN
WEN, BA1, BA0
CK2, CK3, MCS4N, MCSGN
IICSCL
IICSDA
SDRAM data bus
SDRAM address bus
SDRAM
8MB
DIMM
slot
SDRAM
8MB
APC I/F
VDATA
SAMPLEN
PDN
OUTPEN
IMG7-0
ADCCLK, SHD, LCLP
OEB, AFESDENB
AFESDIN, AFESDCLK
Xtal
(SYSTEM)
9.71MHz
CPUCLK
ASIC
9.71MHz
9.71MHz
(SYSTEM)
19.42MHz
READYN
(MEMORY)
INTREQN
RD, WR
CPUA18-0
CPUD7-0
CK1
MCSON
CK0
Figure 2-3-1 Main board circuit block diagram
CCDCLKN, CCDCLK, RSN, CPN, SH
CCDG(O)
A F/E CCDG(E)
CCDR
KEYON, KEY1N, EY2N
SCANON, SCAN1N, SCAN2N, SCAN3N
SCAN4N, SCAN5N
LEDON, LED1N, LED2N, LED3N
LED4N, LED5N, LED6N, BUZERDRN
EEDIO
PLL
EESCL
CPU
DBRXD
DBTXD
CPUA23-21
CSAION
SCKN, FGSO
SBSY, EGSI, SDIR, EGIRN, PDMASKN
RSTN
PLGCLK
PDMASKN
OVSYNCN
2DC
Scanner I/F
Operator panel I/F
EEPROM
Debugger
connector
Decoder
CSSRAMN
CPUD7-0
SRAM
CPUA14-0 256kbit
WR, RD
CSFLASHN
CPUD7-0
Flash
CPUA17-0
ROM
WR, RD
4Mbit
RD
CSROMN
CODE
DIMM
CPUD7-0
4Mbit
CPUA17-0
Engine I/F
2-3-1