,illustration3 ,radio ,shack ,,trs-#hj ,,expansion ,,interface ,radio ,shack ,,trs-#hj ,,expansion ,,interface ,,see ,,caution ,,inside ,,cover ,catalog ,numbers #bf-aadj #bf-aada #bf-aadb ,operator's ,manual ,,custom ,,manufactured ,,in ,u4,s4,a4 ,,for ,,radio ,,shack ,,tc ,a ,,division ,,of ,,tandy ,,corporation ,,introduction ,the ,,trs-#hj ,expansion ,interface 7see ,figure #a7 consists of the ,case1 a ,,dc ,power ,supply1 a ,ribbon ,cable1 a ,cassette ,recorder ,jumper ,cable and an additional ,cassette ,recorder ,cable for ,cassette ,recorder number #b4 ,notice that the ,,dc ,power ,supply is not installed in the ,case upon receipt4 ,it must be installed using the procedures under the heading ,,setting ,,up and as illustrated in ,figure #b4 ,the ,case houses the ,expansion ,interface ,printed ,circuit ,board 7,,pcb71 two ,,dc ,power ,supplies and provides a housing area for an additional expansion ,,pcb4 ,the ,expansion ,interface utilizes a real-time clock and contains sockets for the addition of up to #cb,k of ,,ram in #af,k increments4 ,one ,,dc ,power ,supply provides power to the ,,pcb4 ,the other one supplies power to the ,,trs-#hj4 ,the ,power ,supplies are interchangeable4 ,the ribbon cable has #dj-pin connectors on both ends and is used to connect the ,expansion ,interface to the ,,trs-#hj4 ,you received hoods for these connectors which are covered later in this manual4 ,the ,cassette ,recorder ,jumper ,cable has #e-pin audio ,,din connectors on both ends4 ,it connects between the ,expansion ,interface ,tape input_/output 7,i_/,o7 and the ,,tape connector on the right rear of the ,,trs-#hj ,microcomputer4 ,the ,cassette ,recorder ,cable is provided to connect the ,expansion ,interface to ,cassette ,recorder number #b4 ,,capabilities ,,and ,,advantages ,the ,interface allows you to add the following ,radio ,shack modules to your system3 #a4 ,screen ,printer 7#bf-aaea7 #b4 ,line ,printer 7#bf-aaej7 #c4 ,mini-,disk ,system 7#bf-aafj_/bf-aafa7 #d4 ,cassette ,recorder number #b 7#ad-hda7 ,the ,screen ,printer and ,line ,printer allow you to obtain hard copy 7printed7 information generated by your ,,trs-#hj4 ,the ,,trs-#hj ,mini-,disk ,system is a small version of the floppy disk4 ,it provides vast storage space and much quicker access time than tape4 ,the number #a disk contains about #hj1jjj bytes of free space for files4 ,each additional disk has #hi1fjj bytes of file space4 ,the ,disk ,system has its own set of commands that allow manipulation of files and expanded abilities in file use4 ,the ,,trs-#hj ,mini-,disk ,system uses sequential or random access4 ,the disks will allow use of several additional ,,level ,,ii commands4 ,,important ,,note ,because of the presence of a ,disk ,controller in the ,expansion ,interface1 the computer will try to input the additional commands4 ,when the ,expansion ,interface is connected to the computer1 it assumes that a ,mini-,disk is connected4 ,to use the ,expansion ,interface without a ,mini-,disk1 press the ,,break key on the ,,trs-#hj keyboard4 ,this will override the ,mini-,disk mode and allow normal ,,level ,,ii operation4 ,the use of two cassettes allows a much more efficient and convenient manner of updating data stored on tape4 ,for example1 if you have payroll data stored on tape1 the information can be read1 one item at a time1 from ,cassette ,recorder number #a1 then changed or added to and written out on ,cassette ,recorder number #b4 ,the example cited is a very simple application2 however1 very powerful routines can be constructed to allow input and output of data using two tapes simultaneously4 ,,caution ,this unit is designed to be used with ,level ,,ii only4 ,do not use with level ,i4 ,illustration3 ,,figure #a4 ,expansion ,interface499 99 ,catalog ,number ,description ,,ram #bf-aadj ,,trs-#hj ,expansion ,interface #j,k #bf-aada ,,trs-#hj ,expansion ,interface #af,k #bf-aadb ,,trs-#hj ,expansion ,interface #cb,k ,,setting ,,up ,power ,supplies and ,,pcb ,housing 7see ,figure #b7 ,remove the ,power ,supply ,door 7top right side74 ,first connect one ,,dc power cord 7,,din connector7 to the ,power connector on the ,,pcb4 ,now install the two ,,dc ,power ,supplies as illustrated4 ,route the remaining cords out the rear of the case4 ,be sure the power cords are seated in the door cutouts before replacing the ,door4 ,to gain access to the future expansion ,,pcb ,housing1 remove the ,expansion ,door from the top left side of the module4 ,illustration3 ,,figure #b4 ,power ,supplies and ,future ,expansion ,,pcb ,locations4 7,illustration shows the following parts37 ,,power ,,supply ,,door ,,expansion ,,door ,,recesses ,,recesses ,,housing ,,for ,,future ,,expansion ,,board ,,trs-#hj ,,dc ,,power ,,supply ,,rear ,,expansion ,,interface ,,dc ,,power ,,supply ,,ac ,,power ,,cord ,,dc ,,power ,,cord ,,note3 ,,install ,,expansion ,,interface ,,dc ,,power ,,supply ,,first4 ,,note ,the term port as used in this manual refers to the openings into which the ,cable connectors are inserted to provide an interconnection between the ,,trs-#hj and the ,expansion ,interface modules4 ,the ports1 with the exception of the ,expansion ,interface port1 are also covered by removable ,doors4 ,to remove these ,doors1 press on the right side of the ,door and it will pivot slightly4 ,grasp the left side of the ,door and pull out 7see ,figure #c for locations74 ,illustration3 ,,figure #c4 ,expansion ,interface1 ,front ,view--,doors ,removed4 7,illustration shows the following parts37 ,,door--,,mini-,,disk ,,door--,,line ,,printer ,,port ,,door--,,future ,,expansion ,,port ,,door--,,screen ,,printer ,,port ,electrical ,connections 7see ,figure #d7 ,turn the ,,trs-#hj so that it faces away from you4 ,locate the port ,door 7#adjjjhc72 it's at the right end of the rear panel4 ,to remove the ,door1 raise it up and slide it to the right--then lift it up and away from the ,,trs-#hj4 ,place the ,,trs-#hj and ,expansion ,interface ,hoods 7#adjjjbag and #adjjjbad7 on the ,ribbon ,cable ,connectors as shown in ,figure #d4 ,the ,hoods replace the ,door on the ,,trs-#hj and fill the opening on the ,expansion ,interface4 ,these ,hoods are designed so that it is not possible to insert the connectors upside down4 ,they function as keyways for the connectors4 ,now connect the ,ribbon ,cable between the left front ,expansion ,interface port and the ,,trs-#hj port4 ,connect the ,,dc ,power ,cord 7,,din connector7 to the ,,power connector on the right rear of the ,,trs-#hj and connect both ,,ac ,power ,cords to standard #abj ,,vac outlets4 ,the interconnect cable for an expansion module is provided with that unit4 ,see ,figure #d for ,hood ,assembly and ,installation4 ,connect the ,cassette ,recorder ,cable 7,,din plug on one end and three plugs on the other7 to the ,tape ,i_/,o connector that is located on the rear of the ,expansion ,interface nearest the ,power ,cord exits4 7,refer to ,figure #e74 ,of the three plugs on the other end of the ,cable3 #a4 ,connect the black plug to the ,,ear jack on the side of the ,cassette ,recorder4 #b4 ,connect the larger gray plug to the ,,aux jack4 #c4 ,connect the smaller gray plug to the ,,rem jack4 ,,note ,a ,dummy ,plug is provided with your ,cassette ,recorder4 ,plug it in to the ,,mic jack4 ,this ,plug disconnects the built-in microphone so it won't pick up sounds while you are loading tapes4 ,illustration3 ,,figure #d4 ,front ,view--,interface ,connections4 7,illustration shows the following parts37 ,,hood ,,connector ,,and ,,cable ,,telephone-,,type ,,cable ,,line ,,printer ,,edge ,,card ,,connector ,,with ,,hood ,,and ,,cable 7,,assembled7 ,,line ,,printer ,,port 7,,edge ,,card7 ,,hood ,,connector ,,and ,,cable ,,future ,,expansion ,,port 7,,edge ,,card7 ,,future ,,expansion ,,edge ,,card ,,connector ,,with ,,hood ,,and ,,cable ,,screen ,,printer ,,edge ,,card ,,connector ,,and ,,cable 7,,assembled7 ,,screen ,,printer ,,port 7,,edge ,,card7 ,,trs-#hj ,,interface ,,port 7,,edge ,,card7 ,,trs-#hj ,,interface ,,port ,,hood ,,connector ,,and ,,cable ,,hood ,,connector ,,and ,,cable ,,door - ,,trs-#hj ,,expansion ,,port ,,trs-#hj ,,port ,,edge ,,connector ,,hood ,,connector ,,and ,,cable ,connect the ,cassette ,recorder ,jumper ,cable to the center ,,din connector on the rear of the ,expansion ,interface4 ,connect the other end to the ,,tape connector on the right rear of the ,,trs-#hj4 ,connect the ,video ,cable from the ,video ,display to the ,,video connector on the right rear of the ,,trs-#hj4 ,,note ,your ,cassette ,recorders may be powered by batteries or from a #abj ,,vac source4 ,thus1 ,,ac power cords are optional4 ,the ,,trs-#hj ,expansion ,interface has been designed to support the ,video ,display module4 ,set the feet of the ,video ,display in the recesses in the ,power ,supply and ,,pcb ,housing ,doors4 7,refer to ,figure #f74 ,,operation ,,note ,the ,power switch is recessed into the front of the ,expansion ,interface to prevent accidental loss of power4 ,activate the switch with the eraser-end of a pencil or small tool of similar size4 ,apply power to the ,expansion ,interface4 ,notice that when power is off1 the end surface of the switch is white and when power is on1 it changes to orange4 ,,conclusion ,possibly1 you will not need all of the expansion modules that are available but1 we have supplied you with ,hoods for cable connectors for a complete expansion system4 ,use the ,hoods as illustrated to prevent accidental mismatch between the edge connectors on the ,,pcb and the cable connectors4 ,in the event that you lose a ,door or ,hood and want to replace it1 we have given you a ,parts ,list4 ,you may refer to the ,parts ,list and exploded diagrams to determine its ,part ,number4 ,you can order replacement parts through your local ,radio ,shack store4 ,you must have a ,,level ,,ii ,,basic ,,trs-#hj ,microcomputer to utilize the ,,trs-#hj ,expansion ,interface1 the ,line ,printer and the ,mini-,disk modules4 ,if you have a ,,level ,i ,,basic machine1 it must be modified to accept ,,level ,,ii programs4 ,the ,screen ,printer is the only expansion module that may be connected directly to the ,,trs-#hj ,microcomputer and that will operate with ,,level ,i machines4 ,we are continually improving and updating our ,,trs-#hj ,microcomputer ,system4 ,you will be kept informed through our ,newsletters 7you are on the mailing list71 addenda and revisions to the ,manual4 ,for the complete ,electrical ,connections ,block ,diagram1 see ,figure #g4 ,illustration3 ,,figure #e4 ,rear ,view--,interface ,connections4 7,illustration shows the following parts37 ,,mini-,,disk ,,hood ,,connector ,,and ,,cable ,,door 7,,mini-,,disk ,,port7 #e-,,pin ,,audio ,,din 7,,female ,,connectors7 #e-,,pin ,,audio ,,din 7,,male ,,connectors7 ,,to ,,trs-#hj ,,tape ,,connector ,illustration3 ,,figure #f4 ,placement of ,expansion ,interface4 ,illustration3 --------------- ----------- ,,video ,,display ,,dc ,,power ,,supply -------------- ---------- --------------- ,,optional --------- ------------- ----------- ,,screen ,,cassette _/ ,,printer ,,trs-#hj ,,recorder --------- --------------- ----------- ,,trs-#hj ,microcomputer ,system ,without ,expansion ,interface4 ,illustration3 --------- ,,screen ,,screen ,,printer ,,printer ,,interface ,,cable --------- --------- ---------- ,,line ,,line ,,printer ,,cassette ,,printer -------,,interface ,,cable-- ---- ,,recorder _/ --------- ,p_/,n #fjjjiaj 7,,no4 #a7 ---------- _/ _/ --------- ------------- ,,optional _/ ,,mini-,,disk ,,expansion -- 7,,cassette_/ 7,,no4 #a7 ,,interface ,,recorders --------- ,,mini-,,disk -- #bf-aadj -- ,,may ,,be ,,multi ,,cable ------------ ,,operated ,,with ,p_/,n #fjjjiaa ,,batteries7 --------- ,,mini-,,disk ,,dc ---------- 7,,no4 #b7 -- ,,power ,,cassette --------- ,,future- ,,supply ---- ,,recorder _/ ,,expansion ,,cord 7,,no4 #b7 ,,cable ---------- --------- ,,mini-,,disk ,,interface ,,audio ,,din 7,,no4 #c7 -- ,,cable ,,to --------- ,,assembly ,,audio ,,din ,p_/,n #fjjjijg ,p_/,n #fjjjiji --------- ------------ --------- ,,mini-,,disk ,,video 7,,no4 #d7 -- ,,future ,,trs-#hj ,,video ,,display --------- ,,applications ,,cable #bf-abja --------------- --------- ,,trs-#hj ,microcomputer ,system with ,expansion ,interface 7maximum system74 ,,figure #g4 ,electrical ,connections ,block ,diagram4 ,,parts ,,list ,,expansion ,,interface ,door1 ,mini-,disk #adjjbab ,door1 ,line ,printer #adjjbab ,door1 ,screen ,printer #adjjbaf ,door1 ,future ,expansion ,board #adjjbaf ,hood1 ,mini-,disk #adjjbac ,hood1 ,line ,printer #adjjbac ,hood1 ,screen ,printer #adjjbah ,hood1 ,future ,expansion ,board #adjjbah ,hood1 ,,trs-#hj ,microcomputer ,system #adjjbad ,,trs-#hj ,,microcomputer ,,system ,door #adjjjhc ,hood #adjjbag ,,limited ,,warranty ,radio ,shack warrants for a period of #ij days from the date of delivery to customer that the computer hardware described herein shall be free from defects in material and workmanship under normal use and service4 ,this warranty shall be void if the computer case or cabinet is opened or if the unit is altered or modified4 ,during this period1 if a defect should occur1 the product must be returned to a ,radio ,shack store or dealer for repair4 ,customer's sole and exclusive remedy in the event of defect is expressly limited to the correction of the defect by adjustment1 repair or replacement at ,radio ,shack's election and sole expense1 except there shall be no obligation to replace or repair items which by their nature are expendable4 ,no representations or other affirmation of fact1 including but not limited to statements regarding capacity1 suitability for use1 or performance of the equipment1 shall be or be deemed to be a warranty or representation by ,radio ,shack1 for any purpose1 nor give rise to any liability or obligation of ,radio ,shack whatsoever4 ,,except ,,as ,,specifically ,,provided ,,in ,,this ,,agreement1 ,,there ,,are ,,no ,,other ,,warranties1 ,,express ,,or ,,implied1 ,,including1 ,,but ,,not ,,limited ,,to1 ,,any ,,implied ,,warranties ,,of ,,merchantability ,,or ,,fitness ,,for ,a ,,particular ,,purpose ,,and ,,in ,,no ,,event ,,shall ,,radio ,,shack ,,be ,,liable ,,for ,,loss ,,of ,,profits ,,or ,,benefits1 ,,indirect1 ,,special1 ,,consequential ,,or ,,other ,,similar ,,damages ,,arising ,,out ,,of ,,any ,,breach ,,of ,,this ,,warranty ,,or ,,otherwise4 ,,radio ,,shack ,,tc ,a ,,division ,,of ,,tandy ,,corporation ,,usa43 ,,fort ,,worth1 ,,texas #gfajb ,,canada3 ,,barrie1 ,,ontario ,l#d,m #d,w#e ,,tandy ,,corporation ,,australia #bhj-caf ,,victoria ,,road ,,rydalmere ,n ,s ,w #baaf ,,belgium ,,parc ,,industriel ,,de ,,naninne #eadj ,,naninne ,u ,k ,,bilston ,,road ,,wednesbury ,,west ,,midlands ,,ws#aj #g;,,jn #dgh-,,perkco-#bihjjhd ,,printed ,,in ,u4,s4,a4