PS220 Service Manual
Contents
1. 1 SPECIFICATIONS Copy Paper Size Copy Paper Weight Paper Capacity Paper Feed System Power Source Power Consumption Dimensions Weight 31 August 1989 Maximum A3 or 11 x 17 Minimum B6 or 512 x 842 50 g to 110 g 14 Ib to 28 Ib Two universal cassettes holding about 500 sheets each Feed and reverse roller FRR 100 V 50 Hz 60 Hz 0 6 A Maximum 60 W 745 mm x 447 mm x 612 mm W x D x H 30 4 18 2 25 19 kg 7 1 31 August 1989 2 MECHANICAL COMPONENT LAYOUT Third Relay Sensor Second Relay Sensor Second Relay Rollers Third Relay Rollers Paper Feed Roller Separation Roller Pick up Roller Fourth Cassette 3rd Cassette Oo 0 N O o Aa W IN 31 August 1989 3 ELECTRICAL COMPONENT LAYOUT a O N O oO A N Cassette Bank PCB 3rd Cassette Paper End Sensor 3rd Paper Volume Sensor Right Door Safety Switch 2nd Feed Relay MC 3rd Relay Sensor 3rd Paper Size Sensor 2nd Relay Sensor Cassette Bank Motor 3rd Lift Motor 3rd Lift Sensor 3rd Paper Feed MC 3rd Feed Relay MC 3rd Pick up SOL 4th Paper Feed MC 4th Lift Sensor 4th Pick up SOL 4th Lift Motor Cassette Bank Motor Capacitor 4th Paper Size Sensor 4th Paper Volume Sensor 4th Cassette Paper End Sensor 31 August 1989 4 OVERVIEW This unit adds two additional universal cassettes 500 sheets each whi2. ch are the third and fourth cassettes to the copier Both the third and fourth paper feed stations have an FRR Feed and reverse roller mechanism which is similar to the feed system of the copier except for the following items 1 Both third and fourth cassette bottom plates can be lowered mechanically to load paper without removing the cassettes 2 The pick up paper feed and separation rollers are driven by the bank motor an ac motor via the third and fourth paper feed clutches and gears The second and third relay rollers transport paper to the registration rollers of the copier They are driven by the bank motor The second and third relay sensors monitor the paper feed timing To facilitate loading paper and removing misfed paper the following four mechanisms are included in the bank 1 Front Loading Mechanism The paper supply unit can be pulled all the way out This mechanism makes paper loading and misfeed removal easy 2 Right Cover Misfed paper remaining in between the bank and copier can be removed by opening this cover 3 Slide Mechanism When the LCT is installed on the right side of the bank it is impossible to open the right cover for misfeed removal The slide mechanism however slides the paper supply unit to the left after pulling the paper supply unit all the way out for removal of misfed paper 4 Second Relay Roller Drive Mechanism This mechanism allows you to manually rotate the second relay rol
3. h cassette information is being received In the above diagram two example actuator plates are shown The actuator plates in cassette 3 and cassette 4 paper size sensors in the cassette bank have notches in the fourth and second positions respectively Where there are notches the photointerruptors remain activated 0 volts Thus when scan line 3 is high bit 4 of the data bus remains LOW when scan line 4 is high bit 2 of the data bus remains LOW The CPU monitors the data bus at the appropriate time to determine the paper size in cassettes 3 and 4 of the cassette bank Signals from the volume sensors are sent to the copier main PCB through the cassette bank PCB and the paper feed control PCB however the copier operation panel will not indicate how much paper remains in the cassettes 7 6 31 August 1989 7 LIFT MOTOR CONTROL AND PAPER END DETECTION 7 1 LIFT MOTOR CONTROL EX Paper End Sensor Cassette Bank PCB Paper Feed Control PCB Main PCB merenda Eves 1 ow faim N456 3 5V CN102 AiO N456 5 Scan3 Scan 4 I LU L lil OV Paper in Both I I I AT Paper End 3 1 I RZ Paper End 4 WELLL y 7 Both empty Ol UMa CE ll drrrr ez 7 7 J Cassette Bank PCB Paper Feed Control PCB Main PCB Paper End 7 La No Paper OFF High ON Low CO Sun Lift Sensor A gt gt ui I N menti ON Low Na By pass Feed The paper size sensor is also used as a cassette set se
4. left retainers B 4 screws each and the front and rear retainers C 1 screw each from the paper feed unit 7 10 31 August 1989 1 L SENOZ a AA Pirie PY SJ SsseaT py KA e bi 27 ll N NG 2 Pull the drawer D all the way out and remove the strips of tape E 3 Dock the copier to the cassette bank so that the pins of the copier F are inserted into the positioning holes G of the cassette bank Then secure the copier to the cassette bank 4 Screws CAUTION Be careful not to crush the copier harness and the copier cassette bank 7 11 31 August 1989 j CE Riis a es ads WE andl CN413 NY Sa 4 Remove the copier rear cover A 2 screws and the toner collection bottle B 5 Connect the 14P connector C of the cassette bank to CN413 on the paper feed control board D of the copier Connect the free connectors of the cassette bank to the free con nectors of the copier Red 2P E amp Red 8P F White 10P G 7 12 31 August 1989 6 Remove the knob H from the relay roller drive assembly 1 screw Remove the support straps I 1 screws each the copier front cover 2 knob screws 7 Remove the right inner cover J 4 screws and install the relay roller drive assembly K 2 screws 8 Reinstall the right inner cover and the knob 9 Check the operation of the cassette bank and the copier system 10 Fill out the New Equipment Condi
5. ler to remove the misfed paper 7 4 31 August 1989 5 PAPER FEED CLUTCH ON TIMING 0 1 Pulse 1 9945msec Start Key x 4th Paper Feed Clutch 925 Y 1734 ard Paper Feed Clutch _ ___f148 AOOO ORANE 2nd Paper Feed Clutch 1528 4 1734 1st Paper Feed Clutch 1650 1734 The paper path length from each paper feed station to the registration rollers is different For this reason the paper feed magnetic clutch on timing for each paper feed station is different 7 5 31 August 1989 6 PAPER SIZE AND VOLUME SENSORS Cassette Bank PCB Paper Feed Control PCB Main PCB i Output pulse example P W Ve I indizi o Cassette Cassette Dt gt t Ot gt t 2 12348 12365 3 I fer L 1 L LI CN481 13 CN102 A5 a n 1 4 CN461 12 i 2 CN102 A6 i al CN461 11 deri cnioz asg Paper size a Es ata bus CN461 10 CN102 A7 ola CN461 9 ia Real Circuit PI DI DI DI DI ANNA wT CN641 8 Ton Scan3 102 87 85V Ve CN481 7 I___2CN102 88 Paper Size 4 RA EEE e Not CN102 B9 dI dI dI dI 3 jCN461 6 ra AK zine A 1 eae Zanu 2 gt CN481 4 CNi02 Bii J nn TE ei SUS Scena Comparator CN102 B5 Scan 3 CN102 A8 Scan 4 The CPU sends separate scan pulses SCAN 3 4 to the corresponding sensors of the cassette bank The output of this group of sensors for all cassettes can be monitored by one data bus because the scan pulses are sequential allowing the CPU to determine whic
6. nsor When the paper size actuator plate is inserted into the paper size sensor certain photointerruptors turn off 0 volts to 5 volts After receiving a 5 volt signal through the paper size data bus the CPU turns on the lift motor The CPU energizes the lift motor until the lift sensor is de actuated When the lift sensor is de actuated the photointerruptor is ON and its output drops from 5 volts to ground After receiving the 0 volt signal the CPU turns off the lift motor 7 7 31 August 1989 7 2 PAPER END DETECTION After the last sheet of paper from a cassette has been fed the Load Paper indicator lights Photointerruptors are used for the third and fourth paper end sensors When either one of the sensors is actuated the photointerruptor turns off 0 volts to 5 volts The CPU detects paper end by monitoring the output of these sensors As with the paper volume and paper size sensors the CPU uses the same scan pulses to monitor these sensors 7 8 31 August 1989 8 INSTALLATION 8 1 Accessory Check Check the quantity and condition of the accessories in the box according to the following list 1 Relay Rollers Drive Ass y 2 Screw M4 x 8 6 3 Multiple Language Decal 220 240V only 4 NECR 5 Envelope NECR 115V only 7 9 31 August 1989 8 2 Installation Procedure 1 Remove the external strips of tape A Remove the right cover 4 screws and the left cover 2 screws then remove the right and
7. tion Report 7 13
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