Page 1: ...MODEL 730 1 PRINTER MNlg AMtUJAlL DECEMBER 1979 Centronics No 37400741 Rev 2 CERTRDniCS data computer corporation Hudson New Hampshire 03051 Telephone 603 883 0111...
Page 2: ......
Page 3: ...TABLE OF CONTENTS SECTION SPECIFICATIONS OPERATION MAINTENANCE 7 _i PAGE INTRODUCTION 1 2 SETTING UP 3 RIBBON INSTALLATION 8 10 PRINCIPLES OF OPERATION 12 PRINTER INTERFACE 21...
Page 4: ......
Page 5: ...lder A built in rip and read cutting edge allows easy removal of paper The first line of following page is printed within five lines of tear edge Two ply paper may be used with operator attendance 3 S...
Page 6: ...8 6003 Cut Sheets 8 1 2 wide Rolls 3 1 2 to 8 1 2 wide x 5 H diameter with 1 Core 2 ply Fanfold 9 W pin to pin 3 ply 28 lines per minute 1pm at 80 characters per line cpl or 74 1pm at 20 cpl left just...
Page 7: ...restraint and ribbon cover packing has been removed CAUTION When turning power on or off the RESET ON OFF switch should always be placed in the ON position to prevent erroneous communications be twee...
Page 8: ...and release support arms 4 Remove core hub from plain end and insert roller through standard 1 inch paper roll core and place roll on holder as shown with paper feeding from bottom of roll m SLIDE COR...
Page 9: ...e punched paper This type of paper should be used wherever registration is critical such as in preprinted forms applications 2 The last line can be printed up to 1 6 40 6 mm from the bottom of the pag...
Page 10: ...edges and straighten as required 7 Remove any skew between paper roll and the paper drive roller by sliding the roll on the holder axle to align the paper as shown in Figure 3 THUMB WHEELS ALIGN ROLL...
Page 11: ...ng used NOTE When using pinfeed type paper the pinch roller release lever should be left in the down position away from printer This provides more positive drive by the feed pins and prevents imprinti...
Page 12: ...am being careful to position mobius loop twist on the left side See Figure 4 7 Hold ribbon in place by pressing down on plastic strip through hole in shell piece and then remove wrapper by pulling end...
Page 13: ...MANUALLY ADVANCE CW ONLY TO REMOVE SLACK ZIP PACK RIBBON RIBBON TENSIONER OPEN ARM TO THREAD RIBBON INSURE THAT RIBBON IS DOWN ALL THE WAY THEN RELEASE ARM Figure 4 RIBBON THREADING DIAGRAM SHELL Fig...
Page 14: ...e visible through paper exit slot 4 Place RESET ON OFF switch in the OFF position Printer is ready to accept data 5 To turn printer off place RESET ON OFF switch in ON position Then place POWER ON OFF...
Page 15: ...er is ON 5 volts RESET ON OFF SWITCH POWER SWITCH FRONT REMOVABLE TOP COVER Provides access to change ribbon and load paper POWER CORD PARALLEL INPUT CONNECTOR 40 pin edge connector PINCH ROLLER RELEA...
Page 16: ...ansfer of data is achieved using the busy demand and acknowledge signals generated by the printer logic 00819 PRINTED CIRCUIT BOARD IPRINTER MECHANICS I HOST DEVICE 8 BIT DATA I DATA STROBE BUSY DEMAN...
Page 17: ...ion or overprinting will occur Line feed codes may be used for limited paper handling functions Each line feed code moves the paper one sixth of an inch Thus for example if it is desired to move the p...
Page 18: ...t f 3 b c d e f G h i J k 1 m n u NORMAL CHARACTERS 1 II iu i K o l 22 3 l A Q A r A Kit C i e F j I I x U K i M N CD R a R 3 r U V W X V if i i t Hi fc en cl frek r C3 hl i j K X ITl r i CD ys c T b...
Page 19: ...usee is for data reception and line feeds that do not fill tha line feed buffer For line feeds that is 1 10 msec 10 0 the maximum time i Figure 9 INTERFACE TIMING The time between the trailing edge of...
Page 20: ...the left margin and the BUSY signal is discontinued allowing data to be sent by the host device If the switch is placed in the ON position when the printer is processing a line of data the printer wil...
Page 21: ...OR PRINTER INTERFACE CONNECTOR PIN OUTS PIN SIGNAL PIN SIGNAL 1 2 TWISTED PAIR DATA STROBE DATA STROBE GROUND 3 DATA BIT 1 4 TWISTED PAIR GROUND DATA BIT 1 5 7 DATA BIT 2 6 TWISTED PAIR GROUND DATA BI...
Page 22: ...the printer has processed the latest data transferred from the host No new data can be sent to the printer until the leading edge of the ACK pulse has occurred If the printer receives a carriage retur...
Page 23: ...feeds have been processed and the line feed buffer is partially full Line feed codes and character data can be intermixed however all line feeds in the buffer will be processed before the next line is...
Page 24: ...1 2 3 4 5 6 7 NUL DLE SP P 4 P 1 1 SOH DC1 1 A Q a q 1 2 STX DC2 2 B R b r 1 1 3 ETX DC3 3 C S c s 1 4 EOT DC4 4 D T d t 1 1 5 ENQ NAK 5 E U c u 1 1 6 ACK SYN 6 F V f V 1 1 1 7 BEL ETB 7 G w g w 1 8...
Page 25: ...r is turned OFF PREVENTIVE MAINTENANCE ITEM FREQUENCY PROCEDURE External Cleaning As Required Clean all external surfaces using a mild detergent and a soft clean lint free cloth Internal Inspection Ea...
Page 26: ...e probable causes and the remedies If the equipment remains inoperative after performing the remedies indicated the equipment should be serviced by qualified service personnel Note that the warranty i...
Page 27: ...er clockwise to assure proper movement of ribbon Connect AC input connector to power source Remove power and carefully clear paper jam Check condition of ribbon before returning power Check if Power O...
Page 28: ...age front clips 3 Unthread the ribbon from the print head carriage assembly then take up slack in ribbon by turning ribbon drive roller knob clockwise 4 Release the two Phillips head screws at the fro...
Page 29: ...TOR R34 REMOVE TO DISABLE UTO LINE FEED ON CARRIAGE RETURN RIBBON DRIVE MOTOR CABLE CONNECTOR TRANSFORMER Tl BODY COVER BASE COVER HIGH VOLTAGE SHIELD FUSE Fl 1A SLOW BLOW 25D x 1 25L Figure 14 DISASS...
Page 30: ...lies DISABLING OF AUTO LINE FEED ON CARRIAGE RETURN The auto line feed on carriage return function may be disabled by removing resistor R34 on the logic P C board To disable this function refer to Fig...
Page 31: ...in i 5 C z UJ u nz UJ 1_ U U1 U m UJ UJ 0 CC 1 1 UJ tn g Z CC UJ X i 5 o ui m u UJ J a z D U u H El 93 U 0 1 Q O m r4 fa 27...
Page 32: ......
Page 33: ......
Page 34: ......
