Wang 2228D-4E Maintenance Manual Download

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Summary of Contents for 2228D-4E

Page 1: ...CATION CONTROLLERS LVP MVP Mod ls 2228D 4E 2228D 4A 2228D 4X 2228D 8E 2228D 8A 2228D 8X SVP Models OP28D 4E OP28D 4A OP28D 4X OP28D 8E OP28D 8A OP28D 8X 7301 Customer Engineering Product Maintenance M...

Page 2: ...nd repair the above mentioned models of the 22280 It will be updated on a regular schedule Second Edition January 1984 This edition of the Teleco Tlllunications Controller STD manual obsoletes documen...

Page 3: ...Output SI0 2 Chip and Modem Interface Clock Mode Register and Internal External Timing Syn hronous Input Output SIO Chip and Modem RS 449 Interface NRZ NRZ I Mode Character Recognition 9517 1 OMA Chip...

Page 4: ...iption 4 4 4 5 2 Powe Up Error Code I11terpreter 4 4 4 5 2 l Introduction 4 4 4 5 2 2 Program Description 4 5 4 5 2 3 Operation 4 5 4 5 3 Field Level Diagnostics 4 5 4 5 3 1 Configuration Requirements...

Page 5: ...g Flow Charts 8 2 8 2 1 External Internal Loop Test 8 2 8 2 2 Field Level Tests 8 3 Appendix Page A DIAGNOSTIC PART NUMBERS A 1 B MODEM INTERFACE SIGNALS B 1 c FIELD LEVEL DIAGNOSTIC ERROR CODES C 1 D...

Page 6: ...210 7855 A Daughterboard 4 1 Controller Switch Settings F 1 RS 232 Loopback Connector WLI 420 1040 F 2 RS 232 366 Loopback Connector WLI 420 1041 F 3 RS 366 ACU Lcopback Connector WLI 420 1104 F 4 RS...

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Page 8: ...turn on and system checkout analyze failures and troubleshoot faults down to the major component and board level and remove and replace major components The models covered in this manual are 2228D 4E...

Page 9: ...r the motherboard and daughterboard combinations Transmission speed at the modem side will support rates up to and including 9600 BAUD In addition full duplex capability and support f HDLC SDLC protoc...

Page 10: ...64K X 21 Same None None New 2228D 8E OP28D 8E 128K RS 232 366 None None New 2228D 8X OP28D 8X 128K X 21 Table 1 1 next page lists the latest product structure for all models of the 22280 The LVP MVP b...

Page 11: ...228 0E 210 7858 A 210 7659 3C 220 332 64K SVP 232 ACU SVP Ext 220 3109 OP280 4A 449 ACU 177 2228 SF 212 2228 0F 210 7857 A 210 7659 3C 220 0248 64K SVP 449 ACU SVP Ext OP280 4X X 21 64K VP 177 2228 SG...

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Page 13: ...rm the associated circuitry what function the CPU is to perform The Ml signal is active during the first cycle the fetch cycle of each instruction and also during a special interrupt acknowledge cycle...

Page 14: ...CONTROLLER ORO 1 ORO 2 DROJ CBS MULT EOP LATCH 2K X H PROM BOOTSTRAP 62K X 9 RANDOM ACCESS MEMORY WITH PARITY CHK ANO GENERATOR 1OF3 1 VERSIONS Vl7m 1 S IO 2 1 lSIO ADV Al R CH A L _ _ S RCV r Nfiil...

Page 15: ...all OMA channels 10 CTC channel 3 interrupt vector source for Ring Indicator Incoming Call Signal 11 PIO channel A 12 PIO channel B THE 2200 INTERFACE The major features of the 22280 interface to the...

Page 16: ...ntroller With CPB signal off CPB logic 1 and ARDY from channel A output chanuel from the PIO is active high the controller is ready to transfer data to the 2200 The data input lines are set to the val...

Page 17: ...ry device address with the high order bit AB8 inverted is used by the 2200 to test a request status bit set by the 2228D microcode When the 2200 I 0 bus issues an ABS strobe the contents of the addres...

Page 18: ...T 60 Status Request Latch is Not Set Source Signa1 2200 OBS Strobe and Primary Address Select Is On 2200 CPB Signal is Off Logic 1 and Primary Address Select Is On and PIO CH A Is Ready Active Hi h PI...

Page 19: ...smission operation When DO is a logic 1 the internal clock from the CTC channel 1 is routed to the SIO transmitter and receiver clocks Also at this time the modem control signal secondary Request to S...

Page 20: ...whereas to send a binary 0 the controller will change the signal condition to the opposite state The 2228D is provided with the option of transmitting and receiving digital data in the NRZI code when...

Page 21: ...C channel 2 will provide a DMA completion interrupt to the Z80A CPU for all four DMA channels The connections of the DMA chip are outlined as follows DMA DMA CHANNEL DATA SOURCE DATA DESTINATION DMA C...

Page 22: ...ave the programmer from latching and masking off the EOP signals via a register The CBS strobe will also cause an interrupt on CTC channel 2 since it is hardwired to the same DMA Multiple Latch Circui...

Page 23: ...shown below CTC Channel 0 1 Counter 2 3 Operating Mode Counter Timer Timer Counter must be Set To a l Timer Signal Inpt _ Character Interrupt Signal Bisync opera tion of SIO None None Transmit Clock F...

Page 24: ...merly DSS from earlier RS 366 document Signals on this circuit indicates whether a connection has been established to a remote workstation or to indicate the status of the automatic call origination p...

Page 25: ...next digit indicated by the 4 bit word from the 2200 The OFF conditin indicates that the 2200 should also turn OFF the Digit Present DPR signal and set the states of the Digit Signal Circuits for the...

Page 26: ...transfer and clearing phases User interaction with leased circuit networks consists of two phases the quiescent phase and the data transfer phase These interface phases are analagous to a conventiona...

Page 27: ...eir slow detection process However column sele tion is not required until the outputs of the sense amplifiers become valid because its function is to gate data from the selected sense amplifier to the...

Page 28: ...off isolating the correct data in the cells After the row is off the half digit lines are prepared for a new cycle CAS on the other hand controls column selection circuitry and the transfer of data fr...

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Page 30: ...2 3 3 and 3 4 including the locations of the External Internal Test Option Switch SWl the Device Address Switch SW2 the power up diagnostic PROM L37 on 210 7855 A or L44 on 210 7659 3C and the diagnos...

Page 31: ...7301 Figure 3 2 2228D 4E 8E Mounting Panel 1 i I r Figure 3 3 fI 1111 1 1 I j I i 210 7858 A Motherboard 3 2...

Page 32: ...C r ll p t lll LED sf e Fi g 11 r 1 wi 1l gi v e 11111 of lh1 fnllllwin 1 tl1rP1 indications This indiC al1 tli it ill TC et ntrollPr powt r up tPsts hnvP passeci and th1 pr1 gr 1m 1 11U rs tl11 1 HD...

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Page 34: ...ss of a multipoint secondary station and to set any other user options Figure 4 1 shows the settings for the switch banks that are located on the motherboard Switch SW2 is the device address switch It...

Page 35: ...I L44 _ _1 illl _ FOR 210 7659 3C DAUGHTERBOARD PROM L37 FOR 210 7855 A DAUGHTERBOARD 0 RS 232 C CONNECTOR D LED SWITCH 1 SET FOR EXTERNAL LOOPBACK TEST ON ON I OFF OFF OFF OFF OFF OFF cm OFF B 0 RS...

Page 36: ...wer supply reference material is listed in below Document No Manual Catesor t Section No Pase No 729 0602 LVP 4103 11 2 11 2 729 0583 VP 4103 3 3 2 3 12 729 0584 MVP 4103 7 3 2 7 5 729 093 5 SVP 4103...

Page 37: ...Power UP 4 Write Bad Parity Parity Generator Test S Bank Decoder Test 6 62K Ram Marching AA and SS Test 7 DMA 9Sl7 Power Up 8 DMA 9517 Current and Word Count 9 CTC Power Up 10 CTC Channel Interrupt Te...

Page 38: ...software part numbers pertaining to the Power up Error Code Interpreter 4 5 2 3 Operation To rLU l the 2228D All Power Up Error Code Interpreter Program perform the following Program Loading Procedur...

Page 39: ...ist of diagnostic part numbers Disi tt containing MVP BASIC 2 Rev 2 1 or VP Basic 2 Rev 2 3 and up MVP Basic is used to configure the 2200 CPU for the Field Level Diagnostic When u3fog the MVP softwar...

Page 40: ...opback connector on the motherboard See paragraph 4 5 3 1 6 below for correct part numbers Appendix F contains wiring diagrams of the loopback connectors e When a menu of the available tests is displa...

Page 41: ...e modem on most Bell modems this connector will be labeled CUST EQUIP If required refer to Appendix B for interface pin assignments and descriptions 4 6 l OPTIONAL CABLES For modem cable lengths longe...

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Page 43: ...are no parts requiring preventative or corrective maintenance The only replaceable parts are the RAMS WLI 377 0345 M or 377 0645 located on the daughterboard 210 7659 3C or 210 7855 A Appendix D conta...

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Page 45: ...THE SCHEMATICS WHEN AVAILABLE ARE ON THE LAST rICHE IN THIS SET L...

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Page 47: ...All Controller assembly is not to be repaired in the field except for RAM failures When a controller develops trouble in a user s system it will be replaced as a unit see Chapter 1 for part numbers T...

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Page 49: ...y be many components involved such as telephone lines modems and host computers and any one of these can cause a problem When a problem is encountered in the telecommunications system refer to the tro...

Page 50: ...4 POWER ON YES VERIFY 2200 VOLTAGES PER PARAGRAPH 4 4 IF LED NEVER COMES ON CHECK 2200 POWER SUPPLIES REPLACE 2228D BLINKING LED INDICATES A REPORTABLE FAILURE 1 USE POWER UP YES POWER UP DIAGNOSTICS...

Page 51: ...N 2200 AND ENSURE LED EXTINGUISHES AFTER 15 SEC TAKE APPROPRIATE t ACTION ACCORDING TO TEST RESULTS REMOVE LOOPBACK CONNECTORS CONNECT MODEM TO 2228D LOAD 1 t OPERATIONAL SOFTWARE ATTEMPT HOST COMMUNI...

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Page 53: ...ram Diskette SSSD part no A 3 FIELD SERVICE DIAGNOSTIC Description Package part no Documentation part no Program Diskette SSSD part no For 2228D 4E 702 0186 378 4390 For 2228D 4E 702 0182 For 2228D 4E...

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Page 55: ...SD Received Line Signal DCE Detector 15 DB TC Transmitter Signal DCE Element Timing 17 DD RC Receiver Signal DCE Element Timing 20 CD DTR Data Terminal Ready DTE NOTE The ON condition 3 to 2SV the OFF...

Page 56: ...ial mode The On condition also indicates that any timing functions required by the switching system to complete a call has completed Received Line Signal Detector carrier The ON condition on this circ...

Page 57: ...Digit Digit Present Digital Signal Circuit Digital Signal Circuit Digital Signal Circuit Digital Signal Circuit 1 1 1 1 Source DTE ACE ACE ACE ACE ACE DTE DTE DTE DTE DTE Signal Ground This conductor...

Page 58: ...between successive events in the calling procedure The ON condition indicates that the call should be abandoned Present Next Digit Signals on this circuit are generated by the ACE to control the prese...

Page 59: ...als on this circuit are generated by the DTE As well as being used for the transmission of data or selection sequences to the DCE this circuit may be held in a steady logic state of 0 or 1 together wi...

Page 60: ...circuit are generated by the DCE and are optional The signal provides byte boundaries for call control character alignment Unlike RS232 or RS449 where a DTE s or DCE s condition or state is signaled...

Page 61: ...nsmits contiguous 11 11 characters preceded by 2 or more SYN characters Selection Signal Sequence X DTE transmits selection sequence preceded by 2 or more SYN characters DTE Wai ting DCE Waiting X DCE...

Page 62: ...ed not ready and DCE s i_g_na ls read_y_ simultaneously 15 0 x On Off Call collision DTE detects incoming cal 1 in response to call request li 0 OJI DTE C _ear Re_guest to DCE 17 0 Off DCE clear confi...

Page 63: ...Call DCE Terminal Ready DCE Data Mode DCE Send Data DCE Receive Data DCE Terminal Timing DCE Send Timing DCE Receive Timing DCE Request To Send DCE Clear To Send DCE Receiver Ready DCE Signal Quality...

Page 64: ...E Terminal Timing Signals on this circuit provide the DCE with transmit signal element timing information Send Timing Signals on this circuit provide the DTE with transmit signal element information R...

Page 65: ...Data From DCE Not supported Secondary Request To Send To DCE Not supported Secondary Clear To Send From DCE Not supported Secondary Receiver Ready From DCE Not supported Local Loopback To DCE Not Supp...

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Page 67: ...hunt mode in either Bisync or SDLC mode of testing Display will give mode of testing Transmitter failing to send sync or flag characters during Bisync or SDLC mode of testing Display will give mode of...

Page 68: ...ing Bisync mode of testing SIO failed to enter hunt mode after initialization SIO failed to transmit sync characters after transmitter initialization SIO failed to receive sync characters and exit hun...

Page 69: ...vocates to the RAM address is displayed CTC interrupt failed to occur in allotted time SIO interrupt failed to occur after CTC interrupt had occurred and before a return from interrupt was executed PI...

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Page 71: ...0 to 3FFF 3 L26 125 124 123 L22 L21 120 Ll9 Ll8 8000 to BFFF 2 L39 L38 L37 136 135 134 133 132 L31 4000 to 7FFF 4 153 152 LSl 150 149 148 147 146 145 COOO to FFFF RAM chip layout for the 210 7855 A 12...

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Page 73: ...e or negative levels on any of the interface lines Breakout Boxes also contain 24 switches which allow any of the interface signals except line one Frame Ground lo be interrupted These switches are ph...

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Page 75: ...000 Series Descri tion Jum er Transmit Data From Receive Data 2 Request to Send 4 Clear to Send 6 Data Set Ready 8 Receive Line Sig Detector 11 Secondary Req to Send 12 Secondary Rec d Line Sig Det 15...

Page 76: ...ctor Secondary Req to Send Secondary Rec d Line Sig Det Receiver Sig Element Tim Receiver Sig Element Tim Data Terminal Ready Ring Indicator Digit Present Abandon Call and Retry Call Request Present N...

Page 77: ...Digit Present From Abandon Call and Retry 2 Call Request 3 Present Next Digit 4 Power Indication 5 Secondary Carrier Detect 6 Data Set Status 13 Digit Bit 0 LSB Digit Bit 1 Digit Bit 2 Digit Bit 3 Da...

Page 78: ...r Pin Location Spare From To Spare 3 5 Send Data 4 6 Send Data 5 8 Send Timing 7 9 Send Timing 8 17 Receive Data 9 13 Receive Data 11 12 Request to send 21 23 Request to send 22 24 Receive Timing 23 2...

Page 79: ...male Connector 15 Pos D Series WLI 350 1068 Descrietion Jumeer Pin Location Transmit From To Transmit 2 4 Receive 3 5 Receive 5 7 Indication 9 11 Indication 10 12 Control 12 14 Control Byte Timiug Byt...

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Page 81: ...schematic drawings Part No Sheets Title 210 7659 4 TC Controlrer Daughterboard 64K 210 7855 5 TC Controller Daugh terboard 128K 210 7857 5 TC Controller Motherboard RS 449 210 7858 6 TC Controller Mot...

Page 82: ...J f l DI l A l l 11 l 8 D r o i tt 1 J r c i ollDG 1 l d L ij RUl T 1 4 lf l tSVI 9 7 5 a LS12S 61liffj JMl RJ All 5 L28 LS139 i IA 5 11 3 2 r 4 Al 7 AWA1 1 rl 04 3 It IL I I a a 2 SEE CHART fN 7 Allo...

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Page 85: ...l ml TC BUSAK 44 lz RE ET 1Xil 5 741 Si ta L O I c BROf S llm lml 1CRml I c A I I I oO I 7 5 NI riv l V 5Yll WI 1 61 M AEll p j A1 oil Oto REOI DI iNT DRQJ rop At le MCKI me CK f OW fllf1Si4 3 2 JI i...

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Page 88: ...J 2 __ 1_ ICAI t lff 1 ill R4 Act l II II A4 11 A4 II A4 II 4 104 II 1 r l 1 f TIO lA _ 10 AS 1 JP S tO PS I AS 1 10 AS 10 AS I S 10 H r 13 __ 13 _ z11a t zyz 2__ L t H A6 1 11 1 l fib 1 1J 111 IS 21...

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Page 90: ...4A t I 7 TYPI ML Pllf T l O Ml IMrJN1C S CllOllD 110 111 11 11 11 Al 101 11C 114111 s J3o Jo II l 4W I ll0 3011 A4 A 167 r llElll DI R1I It 101 r 330 011 101 SIP ua 010 1 BROY It II 33 a l W 330 10 1...

Page 91: ...__o_eo__ _o_u_T_4_a 1 Fi eL I l 5 r IC r 1 ti I 17 2 A 4 l V4 1 3__ C_I c es r IC I I I I I tF4 I v I A UG I T 5 1_ G I F I E I I I I B r 4 IS 3 2V Ds ___ c_3__ DAii APPIOllDll lifl _ o o l 11 _______...

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Page 93: ...l 9 a_lc 0 S ______z_ xc e RT IS 3 L iJ I A R Co _ Jv Ov l S04 OS R A xl IEI ij vR v v I _ 4 71 II 1l v R EY T i Ne _ 4 h RM Ml l__ 10RCVA L s10Ro e SV R J _ io z l ov T SQIN 2 I _ _ij_ l iRESET 1 t...

Page 94: ...ld f jd f l j hr __ _u_ s j f 1_1t_ _ s2__ i u J 1 d ffiEij f 54 1114 1111 1f _ _ls_z_4_ lll ZllAi SIO 376 Hll tl46 74LSll a 7 LSI I ZllA PIO LI S76 Hll 5 f u Is lfll 2V Lzi l74LSl7S CH I 74LS74 TPZ...

Page 95: ...1oso JI C oO PIN C ONN 350 0051 L44 8 PIN SOC KET 37G 9015 TvPE L OC T ION Pi RE 74LSOO LaCo I 741 04 L 3 I L S I 7405 L2 7 3 co C7 l e I EOP G C I 8 YBT r e e II I r ldl C NCAl L c i NC ALt C 11 c J...

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Page 97: ...JF7 3Ft0 4 4 3 2 r l IUI fB ezz SVR Vlr PUI 4G 7 fB ZFtO ezo Z 7 a aa t31 SPS SSI Tl J PF r 4 h t O IC 1 30 404 239 S VR 4 3 13 0 A 4 sII R2 t l 7K 3 CLRI 1 5 le1 W I __ L41 t 1 4 JJZ I e Sc T 0C 001...

Page 98: ...Ct titi 3 ZC iOZ H lit l45 4 S3Z 4C1 iiffi zo zeo cTC 1210 0 SVR ___ z z sl_L _ X i11 icl2 12 t S3Z 13 t 508 I LZ 11 Wt t111 J 2 7K 10 01 J r z P rAZ 40 c r zo z LS S ov 11 z z 9 5 El Z_ 10 I s LS74...

Page 99: ...m 7a Aa8 3 tOI 10 9 8 sv 7 t_ P 851 3C9 3 Mi 36 7 3 3 ___ _ L OB 2 4 L P Iei m m m m m a I3Z I A G DAii AfflOftD 11 yyft1 t c re i _ 1 1 1111 CMI llGI G F E 8 UlllW IOOIL IO IG llGI A E Z3Z 1 5 11n11...

Page 100: ...G F E c 8 JI MOJNTEO CIRC UIT S 10 P3 J3 F E Pl 0 B un arr10110 oan WANGl _ vu ow TEIC ART d ol llllGI en 1M1...

Page 101: ...L I 74L os L37 I L 39 I 74LC 74 L S I L 34 I 01 IN J4A 380 IOl l 74L 1 Ho 1 13 I 741 1is I I i 9 0 Z L41 I LEf2_ I MVS0 2 REO 3_IO OOZ6 tro 209 377 o a1s JI C ON 9c p 350 00SI o z 09 1 31 1 45 1 r z J...

Page 102: ...i I 16 IA l f4 o D Lli L fZ L51 1 tSVR lJ e 1 L z u 4 7K r Ljll5 v L I D7 I 86 L H 1 j c _ 85 W ln 4 lr3 SVR L 30 l _______ oa _2 101 1 Q1j Q _ _____ o_a L l i lfE7 j IO 4 3 E BflDY l 4 1 I TRi4 LS24...

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Page 104: ...l VVV IEI 11 11DYBl3t i 7K R RrDA I IY 4 t o li 15Cfill w KOYA i 0 __tl rail SYHCAi L ffSA U oc0 8 Df1fi i 1 iJic Rmi 4 1 44 l I l Wi 1 t 1fin r cJ l R3 i 7K f iVR p R5 IL _ __VV r tSVR 2 ZK 10 5Tll 1...

Page 105: ...o o o SP 51 o o o o o o oo o o o o o o o o 0f Sd I I Ill fmm I0 o fmm I 0 0 00000 0000000 0 000000 01 o o yt o D c Lzt 0 ZH SIG 0 37 HI I 00000000000000000000 OD 0 Rt D D 0 0 0 0 D 0 0000000 f lm I 0...

Page 106: ...0 1 H f en lfXX p 100V NllCA 100 SCCl i u IUipf 5QOV 300 soze 01 hf tOV T11 T 300 1024 uz 1501 oov ir11 3UO 1150 C 4 7 Jrf 5uOV 30 J 147 c 1 r f j J I r 1 1 oo C l 1 14 15 1t 20V T INT 3 00 10 l _ YI...

Page 107: ...WANG LABORATORIES INC ONE INDUITlllAL AVENUE LOWELL MASSACHUSETTS 01111 TEL 11171 H IOOO TWX 710 30 1711 TELEX t 7UI PRINTED IN U S A...

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