Centronics 101AL Technical Manual And User Manual
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Centronics 101AL, PMSO l: (Paper Movement Solenoid) Generated on LSI chip ME5 pin 7. Any paper movement command (i.e., line feed, form feed or ver- tical tab). The low PMSOL output activates a driver circuit on the Power Driver board, which in turn ac- tivates the paper movement solenoid on the form feed unit. This causes paper to advance in the printer. PMSO L remains low until one of the following conditions occurs: (1) A paper time-out condition exists. (2) A power prime (PWRPRM) condition exists. (3) During a form feed
ITEM 1 2 3 5 6 7 8 10 11 13 13A 14 15 16 17 19 19A 20 22 23 24 25 26 27 28 29 30 31 32 34 35 40 45 46 47 48 REF REF Rev. E LIST OF MATERIALS MOTOR CONTROL 100 SERIES (Reference: Ass'y Dwg. No. 63011130 - 4005, Rev. G) PART NO. NOMENCLATURE 63011021-2001 PC SO AW MTR CTRL 63002380-2001 BRACKET MOUNTING 3
RIBBON FEED MECHANISM 3. Loosen locking nut (HI-98) with a 7 millimeter (0.28-inch) open-end wrench on left side of ribbon reversing rod. 4. Unscrew ribbon reversing rod from left coupler and remove. C. Driving Slide Shaft - A 1. On the right side of thf3 printer, remove two screws (HI-131) from holder (HI-133) supporting driving slide
Centronics 101AL, CD < m 100'/ 110 V \\5V -----::---, TO TO MOTORS --' 12: 7 " ,.--.,----::-::-----, . MOoORS ;:'00 V 1-:-.:- MOTORS--.J L- 220 V 230 V 2"< - OFF ~·_1AI N MOTOR IV\ FOR"'1 ~EED "r:TOR 20Y 100'1 0" ~ 20 " 115 " ICO V ::v 240 Y > 0 o - o > C r I.n '.I!. 0 0 :: CJ iRANSFORME.R * SHeWN "",IRED FOR ::-' VAC I"-lPU, " kDING NO_2 NC.4 NO·3 TlIE IIIFO_ATlON CONTAINED HEREIN IS I'ROPIIIETARY A
Centronics 101AL, RIBBON FEED MECHANISM J. Ribbon Driving Shaft Assembly 1. To disassemble and remove ribbon driving shaft assembly (HI-79), perform the· following steps: a. Remove screws (H 1-17) from left side of printer and remove bush ing holder (HI-84). b. Remove screws (HI-86) holding cover (HI-85) and holder (HI-84) together, releasing entire driving shaft (H 1-79). Note, that clutch spring (H H-80) must be unhooked from cover (HI-85). c. Remove snap ring (H 1-87) on left lend of driving shaft. d. Release and remove driving gear (1-11-75) by unscrewing allen-head set-screw (HI-78) and releasing spring (HI-Tn and ball HI-76). (Note, that cau
Centronics 101AL, The leading edge of FWDCLD or PMSO L triggers the one-shot causing the output ME 1, pin 3 to go high for a 9-second interval. The resulting low on ME5, pin 6 appears on the cathode (pin 2) of ME2. This turns on ME2 causing current to flow from ME 1, pin 4 (emitter) into the gate of SCR 02, turning it on. With 02 conducting, thus "shorting" the full-wave bridge rectifier, a current pulse, produced by one half of the AC line voltage and passed by the "shorted" rectifier, flows into the gate of the triac (01) switching it to the ON st
Centronics 101AL, DAMPER FRAME 9. To install packing, reverse above procedure and coat inside of cylinder lightly with recommended NYE RHEOLUBE No. 723-MS, or equiv. Note Following points of above procedure: a. Split pin (HD-9) should not interfere with movement of spring (HD-10). b. Piston Rod (HD-2) should be returned to normal position easily by spring (HD-10), when pushing down piston rod by hand and releasing. c. When replacing lid (HD-11), care should be taken that rod (HD-2) moves freely in bushings. 5.2.5.3 Adjustments 1. Tighten center
Figure 8-14., PRINT HEAD AND ASSOCIATED ASSEMBLIES Item Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 Part Number 63002437-4001 63001039-2001 63002476-4001 63002122-2001 63002462-4001 34114161-2001 34815005-2001 34818007-2001 34114201-2
Centronics 101AL, Pb J4 1 - ~ I-I ~I TOFRLF RET. ~ ~ "VTH ~ C ~ ~ F FH D I- f-- ..:.. SE.LSW RET ~ ~ SE.L5'-'" ~ ~ ~ ~ ~ ""f'"E ..::.. K K f-- I- L c f-- I- ~ PWRDR.+15V ~ ~ CGI ~ ~ CG2 f-- - CG3 ,~ 2.. CG4 ~ 2- CG5 ~ ~ CG~ ~ ~ CG7 ,-; f-- I- ~ ~ ~ VIDEO ~ ~ PAPE R TAPE' "!-O'l ~ i-z (O>-lT. PANE-L T OV"2 "3 CIP 'B, -;;-. f'MSOk ~ ""5 CONT. PAl-JEL +5V ~ ~ EOP~W RF:., ~ '7 ~-; "a POWER DR.+OV 'e" '9 CIR ~ 'ro RTPSW RET f-;o 'II SELEC, LAM!? ~ -;-z POWER DR·+5V f.;z: \;&
Centronics 101AL, Rev. E FORM FEED (RELEASE) CLUTCH Figure 1-.5. PAPER MOVEMENT 10183 A small independent motor not shown in Figure 1-5, provides the power necessary to move the sprocket-feed tractors which control paper movement. To move the paper, the printer electronics activates a line feed solenoid which activates a clutch that mechanicallv links the motor to the sprocket-feed tractors. To initiate a single line feed, the line feed solenoid is energized for 15 milliseconds to
FORM FEED MECHANISM 2. F F Clutch Unit (contained between F F chassis, right) (100) and F F Chassis, left '( H H-2) - F F Clutch gear (H H-1 8) - F F Clutch inside cam (H H-14) - gear with stop cam (H H-23) - F F idle gear (H H-27) with belt drive (H H-28). 3. Paper Feed Mechanism (Fig. 8-9 (HF) - paper shaft (HF-98) and pin feed
Centronics 101AL, :0 C'O < "'n VIEW E'-E \ 9}--/ (Gl37' ""'~ -400'., ...... :v'"" ')1) -4008 ""'Cy(~} ,C,: =::¥~' G~:-!' '~- Jr- -~==~=i"== &-J t-l :..-1 r _ . S~E TAbL~ j;",,)k A'::.-::'£:'MBLY 'VARIATlON c; :-!f.,:~~~-~~~;~\~1Ee~ \:;;~ ~;E~~~65 -RIM C~~~~ ;,~~~~2.'t -~~~ 5· 6 SOLDE.'l WITP! (ITEM42.\ feR G.oCO EL£CTR.ICItrIL. CONti
Centronics 101AL, DRIVING MECHANISM F. Forward and Reverse Clutches (No Clutch Gap) 1. Since this section covers installation of new preload clutches (See Figure 8-5), there is no gap required between the rotor (HB-141) and splined armature (HB-142) for both forward and rear clutch. G. Bushing End-Play Adjustment (Pre-Load Clutch) (Refer Fig. 5-5) To ensure smooth rotation of clutch shaft (HB-50) (Preload) perform the following adjustments: 1. Tighten screws (HB-52) on rear (forward clutch) bushing bracket (HB-51). 2. Loosen screws (HB-52) on front (rear clutch) bushing bracket (HB-5
:0 A. ct) P{MER FAILURE C. DRIVE FAILURE ::: A-I TOTAL C-I CARRIAGE MOVEMENT ERRATIC 4. Defective Electronic Card No. I 4. Improper ali gnment of reader I. Damaged power cord. (TTL) . bracket LED's to tape ho 1 es. -n I. Improperly adjusted mai n drive 5. Defective Electronic Card No. 5. Defective loqic board (LSI). 2. Op
Centronics 101AL, SECTI'ON 5 REMOVAL, REPLACEMENT AND ADJUSTMENT PROCEDURES 5.1 I,NTRODUCTION This section describes the operation, removal, replacement and adjustment of each major mech- anical assembly in the Series 101 printer. 5.2 MECHANICAL ASSEMBLIES The mechanical assemblies and their reference figures are covered in the order listed below. Mechanical drawings, and parts lists, are-contained in Section 8 of this manual. Section 5.2.1 !5.2.2 5.2.3 5.2.4 5.2.5 5.2.6 5.2.7 5.2.8 5.2.9 5.2.10 5.2.11 5.2.12 5.2.13 *Part List only 5.2.'1 COVER (
Centronics 101AL, 1. Print Head Assembly 2. Carriage 3. Form Feed Mechanism 1. Operator Control Panel Rev. E 2. Form Feed Motor 3. Video Amplifier and Cable Assembly 4. Light Source 4. VFU Tape Reader 7. Spring Drum 10. Timing Fence 5. Pin Feed Mechanism 8. Platen Knob 11. Main Drive Belt 6. Ribbon Feed Mechanism 9. Damper Figure '1-6. LEFT FRONT VIEW OF 101AL 5. Optical Pick-Up 9. Penetration Control Knob 6. Optic Bundle 10. Forward Clutch 7. Ribbon Cable 11. Maiin Pulley and Drive Belt 8. Power Driver Board 12. Re"erse Clutch F
1. 2. 3. 4. HAN 0 lIi G LSI CH IPS REMOVING.A. CHIP FROM THE SHIPPING CONTAINER a. Before touching the chip, Ireference yourself to the container by touching and holding ihe metalized rubber containing the h . . I C Ip pms. , b. While holding the rubber,llift out chip and hold lightly by the pins. I c. You can now saf
Centronics 101AL, SECTION 1 INTRODUCTION This manual describes the Model 101 AL printer, manufactured by Centronics Data Computer Corporation. It provides general information, detail~d theory of operation and maintenance information enabling field service personnel to maintain the printer. For serial input or other detailed interface infor- mation, a separate document for each interface is published for your reference. The manual is grouped into eight sections, each with its specific purpose. Section 1 - INTRODUCTION, introdwces the reader to the scope and content of the Section 2 Section 3 Section 4 Section 5 Section 5 S
Centronics 101AL, Figure HF. PAPER FEED MECHANISM M0005 (AC) Item Number Part Number Description Quantity HF-2 525207001-2001 Holder for HF-3 2 HF-3 525208001-2001 Bushing for HF-98 2 HF-4 527981000-2001 Retainer for HF-3 2 HF-5 007400516-2001 Screw for HF-2, 4 4 HF-6 048050346-2001 Snap ring for HF-98 1 HF-7 525210001-2001 Guide bar for pin feed unit 1 HF-8 525551001-2001 Collar for pin feed unit 1 HF-9 525743001-2001 Set-screw for HF-8 1 HF-I0 007401016-2001 Screw for HF-7 1 HF-11 021400106-2001 Nut for HF-7 2 HF-13 525747001-2001 Set-screw for HF-16 4 HF-14 525213001-2001 Pin feed Pulle
Centronics 101AL, :lJ CD < -n 00 r\.) I\J Figure HG. PIN FEED MECHANISM Item Number Part Number Description Quantity 1 527981000-2001 Holder, Retainer (B) 2 2 525208001-2001 Bearing, Retainer (D) 2 3 525207001-2001 Holder, Retainer (A) 2 4 007400515-2001 Screw for Items I, 2, 3 4 5 525551001-2001 Pin Feed Stopper 1 6 525743001-2001 Set-screw for item 5 1- 7 525210001-2001 Shaft, Guide, Paper Feed 1 8 007401015-2001 Screw for item 7 1 9 021400105-2001 Nut for item 8 2 10 527081001-2001 Shaft, Paper Feed 1 PIN FEED ASSEMBL V 527447001-5001 Pin Feed Uni
Centronics 101AL, Rev. E If no FWDCLD or PMSOL signal is received during a 9-second interval, one-shot ME 1 times-out causing its output ME 1, pin 3 to go low. This turns off ME2 by delivering a high to ME2, pin 2, which in turn stops current flow out of ME2, pin 4 and prevents 02 from turning on. With 02 off, there is no current flow from the bridge rectifier to pulse 01. Therefore, 01 does not conduct, removing 115 VAC from the motors. No further action occurs until another FWDC LD or PMSO L signal is received. At this time, anyo
Centronics 101AL, CARRIAGE MECHANISM The carriage is moved by the main driving belt (HA-36). Parts HA-41 through HA-44 and HA- 58 through HA-64 are mounted on the underside portion of the carriage. These parts are designed to absorb shock on the belt tension and linear alignment. The ribbon guide roller (HA-5), mounted on the carriage and head bracket (70), holds the ribbon at proper position insurinQ proper tension on the ribbon while printing. Bracket (50) is a part of the video amplifier ass'y and supports the video circuitry for print regi
Centronics 101AL, 4.8 SPECIAL FUNCTIONS I n addition to the paper movement and character printing functions, the printer also performs the following special functions: Bell,Delete, Paper Empty, and Motor Control (optional). 4.8.1 BELL Reception of a bell code (007) or detection of a paper empty condition (PE goes low) causes a BE LL signal to be generated on LSI chip ME5 pin 39. lhis BE LL signal is a 0.8 to 1.6 KHz output approximatE,ly one to two seconds in duration. BE LL is amplified by 07 and 08 and the
Centronics 101AL, DRIVING MECHANISM C. Operating Conditions, Drive Mechanism (F igune 5-2) Alternate forces are exerted on timing belts (H 8-48, and belt 49) including main drive belt (HA-36) and motor (H B-98) because of inHrtia of print head carriage and forward and reverse clutch timing peaks. These variations in the power transmission route are normally handled by the use of a motor clutch plate (HB-98) (part of motor) and motor pulley driver (HB-92) installed to protect belts and motor. Normal cycle time of
Centronics 101AL, APPENDIX B PARALLEL INTERFACE SPECIFICATIONS All standard Centronics printers contain a common 7-bit parallel interface. An optional eighth bit is available, as requir,d by the user. Detailed information describing the standard interface timing, signal descriptions, connectors and other specifications are contained in this appendix. The intent is to provide the user with the technical in- 'formation required to interface directly to a standard Centronics printer, or if neces- sary to design a special interface to adap~ the printer to a particular terminal
Centronics 101AL, 4.6 CHARACTER PRINTING When the dummy character appears at the shift register output (TB8), other than during a prime condition, the logic activates an electromechanical clutch which causes the print head to move from left to right across the page. As the print head carriage moves across the page, the timing fence (and light source) generate timing inputs to the video amplifier board. These timing signals are used by the logic to register the five full col
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