Samsung 740NW Service Manual page 59

13 Circuit Descriptions
13-1-5 IP BOARD ( inverter ) PROTECTION Parts
BIZET INVERTER CONTROLER FAN7310 have 2-way of the PROTECTION MODE.
1. OVP[Over Voltage Protection] : If the Voltage of the series capacitors C10 & C15 is over the 2.0V, the
Inverter latched-off.[See the Picture1]
2. OLP[Over Load Protection] : If the inverter output harness is opened(No-output current), the base of the
13-4
Q1 turns on and chage the C9 ovter 2V and then, the Inverter latched-
off[See the Picture2]
Figure 1.
Figure 2.