Xerox Phaser 3200MFP Service Manual page 174

General Procedures and Information
• Normal mode: 264 mW
- Signal Transition of DAA Solution
• Line Interface Signal of Tel Line and LSD is Analog Signal.
• there is A/D, D/A Converter in LSD, so Analog Signal from Tel Line is converted in
Digital through A/D Converter in DAA and transfer to SSD by DIB Capacitor Digital
Signal from SSD is converted to Analog by D/A Converter in DAA and transfer to
Tel Line
• Transformer transfer Clock from SSD to LSD and Clock Frequency is 4.032MHz.
LSD full wave rectifies Clock to use as inner Power supply and also use as Main
Clock for DIB Protocol Sync between LSD and SSD. Transformer transfer Clock by
separating Primary and Secondary, and amplifies Clock Level to LSD by Coil Turns
Ratio 1:1.16.
- Clock
• Clock is supplied by transformer from SSD to LSD, and there is PWROUT to adjust
output impedance of Clock Out Driver is inside SSD and CLKSHIGH Resistor to
adjust duty of HLPWR Resistor and Clock.
• Clock from SSD to LSD has Differential structure of 180 phase difference for Noise
Robustness
• DIB Data transfer Data from SSD to LSD by Transformer, and also transfer specific
data from LSD to SSD.
• After transferring data from SSD, RSP is transferred and LSD recognizes RSP and
change LSD to output Driver transfer Data to SSD.
• DIB Data form SSD to LSD by Transformer has Differential structure of 180 phase
difference between DIBP and DIBN for Noise Robustness
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.
PE220 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.
Phaser 3200 Line Interface
This is Connection Part between system and PSTN(Public Switched Telephone Network), and pri-
mary circuit is usually located. Main functions are Line Interface, Telephone Connection and Line
Condition Monitoring.
1. Telephone Line Connection
Modular Plug : RJ-11C
LIU PBA Modular Type : 623 PCB4-4
Line Code Length : 2500 50mm
Line Code Color : Black
6-18 04/07 Phaser 3200MFP / Workcentre PE220