Brother 1250 service manual Eeprom HL-1030/1240, Reset circuit HL-1030/1240

CHAPTER 3 THEORY OF OPERATION

1.3.8EEPROM

HL-1030/1240

The EEPROM is X24C01A type of two-wire method with a 128 x 8 bits configuration.

Fig. 3-18

HL-1250

The EEPROM is X24C04 type of two-wire method with a 512 x 8 bits configuration.

Fig. 3-19

HL-1270N

The EEPROM is X24C32 type of two-wire method with a 4096 x 8 bits configuration.

Fig. 3-20

1.3.9Reset circuit

HL-1030/1240

The reset IC is a RN5VD42A. The reset voltage is 4.2V (typ.) and the LOW period of reset is 80ms (typ.)

Fig. 3-21

3-16