Reset Circuit - Brother HL-1440 Service Manual

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1.3.7
EEPROM
HL-1230/1440
The EEPROM is X24C01A type of two-wire method with a 128 x 8 bits configuration.
HL-1450
The EEPROM is X24C04 type of two-wire method with a 512 x 8 bits configuration.
HL-1470N
The EEPROM is X24C32 type of two-wire method with a 8192 x 8 bits configuration.
1.3.8

Reset circuit

HL-1230/1440
The reset IC is a RN5VD42A. The reset voltage is 4.2V (typ.) and the LOW period of reset is
80ms (typ.)
Fig. 3-18
Fig. 3-19
Fig. 3-20
Fig. 3-21
3-17
CHAPTER 3 THEORY OF OPERATION

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