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Centronics 306 Technical Manual

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Centronics 306 User Manual
Centronics 306 User Guide
Centronics 306 Online Manual

Text of Centronics 306 User Guide:

  • Centronics 306, Figure AO Electrical Components (part 1 of 3) Reference Part Number Number Part Name Quantity AO-l 526792001 Transformer unit - 110 volts (50 1 or 60 Hz) AO-l-l 526866001 Transformer unit - 220 volts (50 1 or 60 Hz) (Option) AO-2 007401016 Screw for AO-l 4 AO-3 025040136 Washer for AO-2 4 AO-4 526782001 Supply cord 1 AO-5 526772001 Nylon collar for AO-4 1 AO-6 526773001 Fuse holder 1 AO-S 526812001 Motor connector wire 1 AO-9 525675001 Insulating tube 2 00 AO-I0 007400516 Screw for AO-5 1 • AO-ll 550719002 Washer for AO-I0 1 .a:. 0

  • Centronics 306, Figure AE DRIVING MECHANISM (2) (This Parts Llst App1les to Preload Clutch 0n1y) Reference Part Number Number Part Name Quantlty AE-l 526643001 Drlving pulley AE-2 525744001 Set-screw for AE-l 2 AE-9 526882001 Driving belt unit AE-12 525631001 Clutch turning stopper (L) AE-13 007400616 Screw for AE-12 1 AE-14 025040236 Washer for AE-13 AE-17 526943001 Spacer 2 AE-18 526950001 DrlVe Pulley (C) 1 AE-19 525743001 Set-screw for AE-18 2 CO AE-20 525092001 Bushing unit 2 I ~ AE-

  • Centronics 306, B3. BASIC SIGNAL SPECIFICATIONS Logical TRUE A high signal is defined as a logical TRUE or a logical ONE if it is in the range of +2.4 volts to +5.0 volts, not to exceed a peak positive voltage of 5.5 voJts. ". Logical FALSE A low signal is defined as a logical FALSE or a logical ZERO if it is in the range of 0.0 volt to +0.4 volt, not to exceed a peak negative voltage of -0.5 volt. Level A signal which is present for two or more clock times or wh

  • Centronics 306, ;;0 CD < . Figure AK Pin Feed 03 Reference Part Number Number Part Name Quantity AK-l 525281001 PF holder (R) AK-2 525747001 Screw for AK-l 2 AK-3 525287001 PF driving sleeve 2 AK-4 525288001 Washer for AK-3 2 AK-5 525289001 PF driving pulley 2 AK-6 525746001 Screw for AK-5 4 AK-7 525290001 PF stop sleeve 2 AK-8 525291001 Washer for AK-7 2 AK-9 525292001 PF idle pulley 2 AK-10 525294001 Paper gu1de (for belt) 2 AK-11 525295000 Screw (internal thread) for AK-IO 4 AK-12 001300716 Screw for AK- 11 4 00 AK-13 025030236 Washer for AK-12 4 I w AK-1

  • Centronics 306, Figure 7-7 7-8 7-9 7-10 7-1.1 7-12 7-13 7-14 7-15 7-16 7-17 7-18 7-19 7-20 8-i 8-1 8-2 8-3 8-4 8-5 8-5A 8-6 8-7 8-8 8-9 8-10 8-11 8-12 8-13 8-14 8-15 LIST OF ILLUSTRATIONS (cont'd) Page Schematic Diagram, Video Amplifier. · 7-9 Interconnection Diagram, Connector Card . . 7-10 Wiring Diagram, Printer Mechanism. . 7-11 Schematic Diagram, Elapsed Time Indicator (Option) . . 7-12 Logic/Power Supply Board Connections . . 7-13 PC Board Ass'y, Logic/Power Supply Board (Sheet 1 of 2). 7-15 PC Board

  • PI ~SI=--_~ 9 27.5 VAC S3 fLOGIC/POWER SUPPLY BOARD- - - - - ---l I I Jl I I 9 J2 I , I I L __ _ I I I T I P2 4 5 1 _ _______ .J Jl 3 r-:------, I CAVITY I I I I I R2 ! lKn 'j lW I +35V-l W18 +35V-2 W20 +35V-3 W22 +35V-4 W24 I +35V RET. C2 10K MFD, WVDC 50V I I I - I L ______ .....I P - JI0 Figure 4

  • Centronics 306, MODEL 306 PRINTER REVISION F MARCH 1976 THE INFORMATION CONTAINED HEREIN IS PROPRIETARY AND IS NOT TO BE RELEASED OR REPRODUCED WITHOUT WRITTEN PER- MISSION OF CENTRONICS data computer corp. I:EnTROnll:S data computer corp. HUDSON, NEW HAMPSHIRE 03051 TELEPHONE (603) 883 - 0111

  • Centronics 306, RIBBON FEED - AL Figure 5-14. RACK AND PINION ADJUSTMENT, RIBBON MECHANISM B. RIBBON REVERSE MECHANISM (Perform steps from B.1 through B.5 for adjustment of Ribbon Reverse Mechanism) 1. Dimensioning of Left and Right Ribbon Holder Plates (AL-8, 55) (Perform steps from B.1 through B.5 for adjustment of Ribbon Reverse Mechanism) a. Left Ribbon Holder Plate (AL-8) (Fig. 5-15) (I) Maintain parallelism of plate with respect to printer base and apply distance of 1

  • Centronics 306, Figure 8-16 8-17 8-18 8-19 8-20 8-20A 4-1 LIST OF ILLUSTRATIONS (cont 'd) Electrical Components (Part 1 of 3) - AO Electrical Components (Part 2 of 3) - AP Electrical Components (Part 3 of 3) - AQ Print Head and Associated . Tape Reader Assembly 68060125-5003 (Option) Tape Reader Assembly 68060125-5002, (Option) (Alternate). TABLES 306 Special Function Note Refer to the Engineering Change Notice (ECN) sheets shipped with the printer for changes made to the p

  • Centronics 306, RIBBON FEED - AL RIGHT PAWL OPERATOR (AL-56) (AL-55) RIGHT STOP PAWL (AL-79) 0.5-1.5 MM (0.02-0.06-;n.) RIGHT FEED RATCHET (AL-74) Figure 5-20. RIGHT PAWL OPERATOR STARTING POSITION 5. Ribbon Reverse Adjustment (Left and Right) a. Remove left and right ribbon spools. b. On left support plate (AL-8) of ribbon feed mechanism, loosen screw, washer (AL-47, 48), and pivot control spring (AL-46) upward and towards the front of the printer (to avoid contact with ribbon releas

  • Centronics 306, Octal Output Function Code Jumpers Strobe Mnemonic Printer Action Line Feed* 012 None Gated CSLF 2 Advances the paper one line. PMSOL Vertical 013 None Gated PMsoL Causes paper to advance. If Tab* the optional Vertical Format Unit is used, paper advances until the next hole in channel 5 of the paper tape is reached. Fonn Feed* 014 None Gated PMsoL Causes paper to advance. If the optional Vertical Format Unit is used, paper advance

  • ...... I N ...... :;0 (!) < o c II A 3 1I\010,40l\, Q"O\~ O~~"'( 2 \ "'001,4002-, 400~, ~~~~ ______________ ~~ __ ~.D SEE NOTE :3 +. :A.'-lTICN ETI. IS HIGHl~ SENSITI'JE Hh"-C_E 'NITH C.I>-R£'. ~. PE:...R\AA..NE..N\"\..-"< \.A.A.I?I.."-. \""C'E.

  • Centronics 306, 4.6.4 PRINT HEAD OPERATION The print head is the device used to do the impact printing of the characters. The head contains seven solenoids that move the tungsten wires against the ribbon to form the column of dots on the paper. The position of these solenoids and the location of the tungsten wires in the head are shown in Section 1. Solenoid #1 controls the top dot and solenoid #7 controls the bottom dot in a column. The wires come from each solenoi

  • Centronics 306, REED SWITCH - AG 5.2.7.2 Removal/Replacement A. REED SWITCH (LEFT AND RIGHT) (SEE FIG. 5-9) 1. Remove screw, washers (AG-3, 4, 5) and nut (AG-6) from both reed switches (AG-l). 2. Remove insulating adjusting holders (AG-2) by removing screws (AG-15) mounted to reed switch holders (AG-7). 3. To remove adjustin9 holders (AG-7) remove screws (AG-8) and washers (AG-25). 4. To remove reed switch bracket holders (AG-9, 12) from base of printer, remove screws (AG-

  • PAPER FEED - AJ PIN FEED UNIT - AK B. PAPER FEED CAM AND GEAR (AJ-49)/BACK STOPPER (AJ-31) As the raised tab on inner cam (AJ-40) and clutch release pawl (AJ-79) strike the armature slide (completing a line feed), it is at this pOint that the back stopper pawl (AJ-31) (See Fig. 5-12) drops off the notched end of the cam (AJ-49) (Fig.

  • Centronics 306, Figure AN - Operator Panel Reference Part Number Number Part Name ~lInt1ty AN-2 526765001 Screw for AN-I 2 AN-3 526750001 Select Switch 2 AN-4 526752001 Pilot Lamp 2 AN-5 525864002 Button 3 SA 390925Q4-1001 Line Feed Switch (Option) (SPST) 1 (Optfon) 58 39092000-1001 Single/Double Line Feed Switch I (Option) (SPOT) 5C 39092502-1001 Top of Form Switch (Option) (SPST) I AN-6 526661001 Operator Panel 1 AN-7 007400816 Screw for AN-6 4 AN-a 028040247 Spring Washer for AN-7 4 AN-9 025040236 Washer for AN-7 4 AN-I6 526935001 Tube, Insulatfon 2 AN-17 63060183-3003 Control Panel (Bl

  • Rev. E AD-17 (BEHIND BRACKET (AD-16) DRIVING MECHANISM - AD - (1) DRIVING MECHANISM - AE - (2) 500 GRAMS (17.6 OZ.) 3-6 MM (0.1-0.2-IN.) AE-I Figure 5-4. ADJUSTMENT OF TIMING BELT (AD-41) (VIEW FROM BACK OF PRINTER, FORWARD) 5.2.5 DRIVING MECHANISM (Figure AE, Part 2) 5.2.5.1 Operation The function of this driving mechanism (AE -

  • Centronics 306, ~ I W U"I T1 55 11 VAC 56 11 VAC PI 2 .......,;.5,;..,7 ---4--1 5 r------------------------------, jl CR5 LOGIC PWRjSUPPLY BOARD I Fl +15V + J2 2 .5V 12 CR6 I ON BOARD I I +5V REG. , TO CIRCUITS P2 -~ -{W PI JI I~---~---------------------~~~ I L ____________________________ ...J 10 PI 6 10 !cAVITY - - ~ I I I I I I I I P5 8 ~--- ~ L----I4 Cl 4700 MFD, 25V R1 2.2Kn, r-OPTIONAL INTERFACE-ADAPTER"I J5 J6 8 22 - I I +5 REG

  • Centronics 306, AJ /'I) < ..... I 0\ r ) Tel Figure 7-4. ME4 $V IIJ 20 ZI 2Z 5 9 II 13 THE INFORMATION CONTAINED HEREIN 1$ PROPRIETARY AND IS NOT TO BE RELEASED OR REPRODUCED WITHOUT WRITTEN ftER- MISSION Of CENTRONICS d-. ~ corp. U~E wHE"""" NORE T ... A ..... ONE CHAR. GEN. 15 REQUIR.ED. R70 R7 I 7~K. 751( R7Z R73 R7-1 R75 R7tt 15K .75K 75k 751< 7SK -I~V P3 A B C D E F H 5 MEZ 5V 9 " 13 Ie 3 5 MEB 5v 7 9)(7 ONLY II 13 DCWIZOI OCWIZQ:; CGI CG2 ME? CG3 CG4 :::G5 CGG CIO? DCWo)4 I 2., 'T8IZZ 25 ~ 24 TBI2.q "3 TelZS 16 TBIZG ZIO TB 122 25 TB&apos

  • CARRIAGE MECHANISM - AA Mounted at the front of the carriage unit (AA-51) is the video amplifier bracket (Fig. 8-1/120) supporting the video amplifier (See Figure 7-18) and cabling to the power driver board (Fig. 7-16). Mounted at the back of the carriage unit (to right of the center line) are two ribbon guide rollers (AA-62) which maint

  • Centronics 306, ....... I <.n JI +sv CAP ~ PS +15V 8 CR5 Z 5 G-4 S5 3051 2N'"l44 ;2 S7 5 S.c S4 4 S6 7 51 '3 +35\1 CAP RETURN ,0 53 /2 +.35'11 CAP 3 NOTES: ~ "l -IBV 10 " ;:; +18'\1 7 500 -«-f cRo> 3051 eRe IN"'\OO2. I. ALL RESISTORS ARE 1/4W -rIO"To UNLESS OTHE.RWISE SPECIFIED e. SYMBOL [Z2;l SIGNIFIES HEATSIN'" 3. ADD Jut-'.PER WHEN NOTOR CONTROL IS NOT USED .,. COMPo .... E .... ,S WITH I N

  • Centronics 306, VIDEO VIDEO AMP ---l 1-- 500 ±25 p S STROBE --I 1-- 600 pS ME2B-4 --I 1--500 ±25 pS DLYSTB __ -' DCWO (INTERNAL TO LSI CHIP ME16) DCW3 --~-----. L--_..J CGl CG2 CG3 CG4 CG5 CG6 CG7 Figure 4-6. CHARACTER TIMING 4-16 PRINT TIMING FOR 9 x 7 CHARACTER (A)

  • Centronics 306, SRCL (Shift Register Recirculate Input) Generated on LSI chip ME16 pin 38. A high SRCL signal along with a single CLKTB2 pulse is generated at the end of each PRIME interval. This clocks a dummy character into the shift register. ID (Light Detect) Generated on LSI chip ME16 pin 17. Signal LD is normally high indicating no error in the video circuit. However, if the print head travels from the left limit switch (RTPSW) to the right limit switch (EOPSW) with no STROBE pulse generated by the timing fence, then a latch is set within the chip causing LD to go low. This indica

  • Centronics 306, CAUTION! NO LUBRICANT SHOULD BE USED ON THE ROTOR OR ARMATURE CLUTCH SURFACES. DRIVING MECHANISM - AE - (2) AE-3 Figure 5-6. FORWARD CLUTCH ADJUSTMENT (AIR-GAP) C. BUSHING END-PLAY ADJUSTMENT APPLIES TO BOTH AIR-GAP AND PRELOAD CLUTCH REFER FIG. 5-7 To ensure smooth rotation of clutch shaft (AE-34) (Preload) or AE-3 (air-gap), perform the following adjustments: 1. Tighten screws (AE-22) on rear bushing bracket (AE-21). 2. Loosen screws (A

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