4560/4570 RADF
18 - 58
Nov. 1997 © TOSHIBA
18.11.6
EEPROM circuit
This circuit is the EEPROM and peripheral circuit. It is used for storing data of each of the ADFs.
This EEPROM is memory for storing adjustment values (e.g. reflective sensor sensitivity data or set
position data on the copy glass) and counter values (e.g. number of discharged sheets). Data manipula-
tion with the CPU is carried out on the 3-lead serial interface. Once data is stored to EEPROM, it is held
in memory and does not disappear even if the power is turned OFF.
IC7 pin 1 is the chip select terminal, and is H-level during data manipulation.
IC7 pin 2 is the serial clock terminal. Serial data is transmitted synchronized with the clock input to this
terminal.
IC7 pin 3 is the serial data input terminal, and pin 4 is the serial data output terminal.
D6, R60 and C31 comprise the circuit for holding the power of IC7 until writing ends even if something
causes the power voltage to drop during writing of data.
Summary of Contents for 4560
Page 210: ...Nov 1997 TOSHIBA 13 43 4560 4570 ADU 13 8 7 Harness connection diagram ...
Page 213: ...4560 4570 ADU 13 46 Nov 1997 TOSHIBA 13 8 9 PC board assembly ...
Page 238: ...Nov 1997 TOSHIBA 14 25 4560 4570 CIRCUIT DIAGRAMS 14 5 Power Supply Circuit PS ACC A 115V ...
Page 239: ...4560 4570 CIRCUIT DIAGRAMS 14 26 Nov 1997 TOSHIBA B 230V ...
Page 243: ...Nov 1997 TOSHIBA 16 1 4560 4570 PC BOARD 16 PC BOARD ASSEMBLY 16 1 PWA LGC ...
Page 244: ...4560 4570 PC BOARD 16 2 Nov 1997 TOSHIBA 16 2 PWA PNL ...
Page 245: ...Nov 1997 TOSHIBA 16 3 4560 4570 PC BOARD 16 3 PWA KEY1 16 4 PWA KEY2 ...
Page 246: ...4560 4570 PC BOARD 16 4 Nov 1997 TOSHIBA 16 5 PWA ERS ...
Page 247: ...Nov 1997 TOSHIBA 16 5 4560 4570 PC BOARD 16 6 PS ACC A 115V ...
Page 248: ...4560 4570 PC BOARD 16 6 Nov 1997 TOSHIBA B 230V ...
Page 249: ...Nov 1997 TOSHIBA 16 7 4560 4570 PC BOARD 16 7 PS HVT ...
Page 342: ...4560 4570 RADF 18 84 Nov 1997 TOSHIBA 18 16 2 Control PC board circuit PWA F LGC 770 ...
Page 343: ...Nov 1997 TOSHIBA 18 85 4560 4570 RADF 18 16 3 Harness connection ...