Dell 1135N Service Manual

Also see for 1135N: Specifications User guide Specifications

Contents

Product specification and feature2-27Service Manual2.2.5 Engine F/W Control Algorithm2.2.5.1 FeedingIf feeding from a cassette, the drive to the pickup roller is controlled by a solenoid. The on/off time thesolenoid is controlled by Main PBA. The Paper Jam protocols are as follows:Item DescriptionJAM 0- After picking up, paper cannot be entered due to paper is not fed.- After picking up, paper does not reach the Feed Sensor in after a predetermined time dueto paper slippage, etc.- After picking up, if the Feed Sensor does not detect paper after a predetermined timefollowing the initialization of another take-up retry.* It is a status that the leading edge of the paper doesn’t pass the feed sensor.- Even though the paper reaches to the feed sensor, the feed sensor doesn’t be ON.* It is a status that the leading edge of the paper already passes the feed sensor.JAM 1- The trailing edge of the paper must clear the Feed Sensor after predetermined time.(The feed sensor cannot be OFF)- The leading edge of the paper must detect the Exit Sensor within a predetermined afterleaving the Feed Sensor. (The exit sensor cannot be ON)* The paper exists between the feed sensor and the exit sensor.JAM 2 - The trailing edge of the paper must clear the Exit Sensor after predetermined time.2.2.5.2 TransferThe charging, developing and the transfer voltages are controlled by PWM (Pulse Width Modulation). Eachoutput voltage may change due to the PWM duty. The transfer voltage admitted when the paper passes thetransfer roller is decided by environment recognition. The resistance value of the transfer roller is changeddue to the surrounding environment through AD converter. The voltage value for impressing to the transferroller is decided by this value change.