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