Xerox WORKCENTRE PE 220, Service Manual

Page: 126 / 192

General Procedures and Information
6-18 11/05 Workcentre PE 220
exceed the TIMS out level.
3) Speaker Driving Unit
Analog Switch(MC14053BD) makes a path for FAX Tone, Ring, Key click sound and Analog
MUX (MC14051) makes a different signal level so that the Speaker driver chip(MC34119) can
drive the Speaker with different sound volume.
Printing Process
Printing Process part is made of PC-Interface part, PVC (Printer Video Controller), LSU control
part, High Voltage control part and Fuser Unit control part. PC-interface core is included in the
Chorus2 ASIC and controls the PC interface. LSU control part controls the LSU polygon motor,
Laser diode, video data output so that the printing image can be made up on the OPC Drum.
Line Interface
Line interface part helps the machine connect to the PSTN or PABX Line and is made of almost
primary circuit. Its main function is Line connection, Line state monitoring and TAD interface that
enables a extension telephone or TAD machine to connect to the machine.
Engine Paper Feeding
1) Feeding Type: MP Cassette Type
2) Feeding Standard: Centre Loading
3) Feeding Qty: Cassette 150 sheets (75g/, 20lb paper standard)
4) 1 sheet (Paper, OHP, Envelope etc.)
5) Separating Type: Cassette - Friction Pad Type
6) Manual Tray: 1 sheet LD Driver circuit
7) Driver Type: Driving by Gearing from Main Motor
8) Pick_up Roller Driver: Solenoid
9) Pick up Roller Rubber Material: EPDM+IR =1.3 or more LD (Laser Diode)
10) Pick up Velocity: 94.8731mm/Sec (Process: 93.0667mm/sec)
11) Paper detecting Sensor: Photo Sensor
12) Paper Size Sensor: None
13) Paper Separating Pad Material: NBB 52 °, =0.8~1.2
14) Separating Pad Pressure: TBD 150 gf
15) Pick_up Roller RPM: 47.683 RPM
16) Feeding Pressure (Same as Transfer Roller)
17) Paper Exit Type: Face Down
18) Feed Roller Force: TBD Kg.f or more.
19) Spring Feed Tensile Force: TBD gf
20) Feed roller Velocity: mm/sec
21) Feed Roller Material
22) Exit Sensor: Photo Sensor