HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL
Confidential
2-5
2.3.9 Reset circuit
The reset IC is a S-80928CLNB. The reset voltage is 2.8V (typ.) and the low period of reset is
260ms (typ.).
2.3.10 Panel I/O
The interface with the panel board is connected to ASIC.
2.3.11 Video I/O
The video signal is directly output from ASIC to laser unit.
2.3.12 Power supply
+3.3V is supplied from LVPS. +3.3V is used by logic circuit.
In addition, +3.3V is generated by the voltage regulator from +8V supplied from the LVPS.
+1.5V is used for the CPU within the ASIC and the logic circuit.
24V is used for the motors and solenoids and fan.
2.3.13 Wireless LAN
The wireless LAN is conformable to 802.11 b/g. It is also conformable to WEP, WPA-PSK,
LEAP and Secure Easy Setup.
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