Page 1: ...g Removal 4 CONNECTIONS Registered Trademark Company 1 3 3 3 4 5 5 5 6 8 8 9 12 12 13 13 14 of American Telephone and Telegraph CONTENTS 5 0PERATION A Record a Number Into Memory B Change a Number In...
Page 2: ...his own expense will be re quired to take whatever measures may be required to correct the interference 0 1 02 The reasons for reissuing this section are listed below Revision arrows are used to em p...
Page 3: ...g WAIT input B Optional Features 2 03 The following are optional features a Decorative Faceplate b Speakerphone These dials interface with tele phone sets using either 3B MD or 4A speak erphone system...
Page 4: ...nit is required for each adjunct dial Decorative Faceplate see paragraph 2 09 The 870A1 50 dial may be ordered in its com ponent parts as follows Housing Lower 870ADJ1 50 Housing Upper 870A1U 50 Facep...
Page 5: ...numbers RECORD OFF button nonlocking when momentarily depressed extinguishes the RECORD lamp indicating that the dialer is switched out of the record mode WAIT button nonlocking when momentar ily depr...
Page 6: ...power unit to be in close proximity to the ac line source is not recommended 3 03 Connect the M2SL 87 power cord to the power unit and plug the power unit into an ac outlet not controlled by a switch...
Page 7: ...he adjunct to record a known telephone number into mem ory location immediately above LAST NUMBER DIALED location paragraph 5 01 4 through 7 7 Momentarily hang up handset and then auto matically dial...
Page 8: ...cted a minim urn of five min utes before doing Step c c Disconnect the power unit from the ac out let With the handset off hook and using the telephone set dial manually dial a known num ber to check...
Page 9: ...Loosen the captive screw at the bottom of the cover around the dial and remove the cover B D 1808 18 Kit of Ports Record Disable and Dial lnter Fig 2 mix Feature 3 Disengage dial from chassis paragra...
Page 10: ...ether The one touch calling option can no shown in Fig 4 longer be disabled by the subscriber Note If existing memory is 8 70A or 2870A it must be replaced with 870B or 28 70B respec 7 tively Carefull...
Page 11: ...D1OU 87 or D1OY 5O cord at telephone set end refer to Tables D through G Insulate and store When dial tone detector only is provided first dial tone may or may not be precise 350 Hz and 440 Hz but al...
Page 12: ...ts of terminal areas ac power must be disconnected A Power Supply Board PSB Terminals 3 09 1 2 3 4 5 To access the terminal field on the power sup ply board proceed as follows Disconnect power unit fr...
Page 13: ...de to access the remaining terminals on the PSB 8 To reassemble reverse this procedure B Faceplate Removal 3 10 To remove proceed as follows a Remove 870B1 870B2 2870B1 or 2870B2 face plate as follows...
Page 14: ...al Connections to Con soles 4 04 Refer to Table A for connection references for all options Page 14 4 o5 Adjunct dial connections are shown in Fig 9 for the 870A1 dial and in Fig 11 for the 2870A1 dia...
Page 15: ...e auto matic dialing 2 If the adjunct dial is equipped with the dial tone detector only go off hook listen for dial tone and depress the memory button 3 If the adjunct dial is wired to provide the one...
Page 16: ...ower failure the adjunct dial is inoperative The battery retains the number associated with each of the memory buttons for at least 24 hours If power loss exceeds 24 hours the numbers may have to be r...
Page 17: ...g battery 9 Lift the dial out Note Removal of ac and battery power re sults in loss of stored numbers 10 To replace with a new dial reverse the previ ous steps The connectors are keyed to orient them...
Page 18: ...conversion from 870A2 or 2870A2 to 870B1 or 287061 6 08 Replace an 870A2 87 or 2870 42 87 faceplate with an 870B1 87 or 2870B1 87 faceplate as follows 1 Remove the A2 faceplate by lifting up on any o...
Page 19: ...BL 13 Spare 2 830CMT Gtt 8 Spare 1 R 6 Spare 2 830CMt G 16 Spare 1 R 6 Spare 2 830CM G Net F Spare 1 R 6 Spare 2 830DMt Gtt 8 Spare 1 R 3 Spare 2 830DM G Net F Spare 1 R 3 Spare 2 831CMt 2 Gtt 8 Spar...
Page 20: ...Spare 1 22 Spare 2 4 Spare 1 Net F Spare 2 13 Net R Net GN Net L1 Net R Net GN Net R Net GN 4 Net R Net GN 4 Net R Net GN 4 Net R Net GN 4 Net R Net GN Net R Net GN Net R Net GN 29 Net R Net GN 29 Net...
Page 21: ...870A 1 DIAL TO TELEPHONE SET TEL SET 960A01M Y l I Type 983 Type I COMMON TIP PATH LEAD COLOR I REMOVE FROM I CONNECT TO G I PSB 7 I PSB 14 COMMON RING PATH I LEAD COLOR REMOVE FROM CONNECT TOqq R PS...
Page 22: ...has no blue leads hly CCI lines can be dialed from adjunct dial no intercom lines Replace the D1O J 87 cord in the 870A1 dial with a D1OY 5Ocord observing same color code tt From line key Each adjunct...
Page 23: ...t 16 Spare 1 R 6 Spare 2 2830CM Gtt 8 Spare 1 R 6 Spare 2 2WODMt Gtt 8 Spare 1 R 3 Spare 2 2830DM Gtt 8 Spare 1 R 3 Spare 2 2831cMt 2 Gtt 8 Spare 1 2 R 6 Spare 2 2831CM Gtt 16 Spare 1 2 R 6 Spare 2 28...
Page 24: ...8 16 St are 2 6 1 10 1221 1 8 8 Spare 2 Spare 2 6 10 22 29 3 10 22 29 Spare 2 I Spare 1 8 3 I 10 I 22 1291 1 Spare 1 Spare 1 Spare 1 Spare 1 Spare 1 8 S are 2 6 I 10 I 22 1291 16 8 Spare 2 Spare 2 6...
Page 25: ...94C CONNECTIONS FOR 2870A1 DIAL TO TELEPHONE SET COMMON TIP PATH I COMMON RING PATH I LEAD COLOR REMOVE FROM CONNECT TOqq LEAD COLOR REMOVE FROM CONNECT TO o 54 G Y 7 6 Remove Shorting Bars o 54 G Y 7...
Page 26: ...itch old line switch has no blue leads Only CO lines can be dialed from adjunct dial no intercom lines Replace the DIOU 87 cord in the 2870A1 dial with a D1OY 5Ocord observing same color code tt From...
Page 27: ...2 54 A8R 54B8R BK Net RR Spare 1 s Net C Spare 2 63 B5R 63B9R BK Net RR Spare 1 s Net C Spare 2 83 B5R 83B9R BK Net RR Spare 1 s Net C Spare 2 83C5R BK Net RR Spare 1 s Net C Spare 2 128 A3R 128A iR...
Page 28: ...RR Spare 2 Net C 42 Note 3 39 38 Spare 1 Net RR Spare 2 Net C 42 Note 3 39 38 Spare 1 Net RR Spare 2 Net C 11 Note t 11 1 1 Spare 1 Net RR Spare 2 Net C 42 Note 3 39 38 Spare 1 Net RR Spare 2 Net C 4...
Page 29: ...Net C Spare 2 34 A5T 34B5T BK Net RR Spare 1 s Net C Spare 2 43A5T BK Net RR Spare 1 s Net C Spare 2 46A9T BK Net RR Spare 1 s Net C Spare 2 47 Type BK TB1 85 TB1 3 w o TB1 45 TB1 5 48 Type G TB1 6 TB...
Page 30: ...Net C Spare 1 Net RR Spare 2 Net C Spare 1 Net RR Spare 2 Net C Spare 1 Net RR Spare 2 Net C Spare 1 Net RR Spare 2 Net C TBI 8 TBI 3 TB1 5 TB1 45 TB1 6 TBI 7 TB1 1 TB1 2 Spare 1 Net RR Spare 2 Net C...
Page 31: ...AL OR O 161488 CONNECTOR LEADS IN THE TELEPHONE SET AT THE FIRST ACCESSIBLE PO INT IN THE CASE OF KEY DP OIAL PULSE TELEPHONE SETS IT MUST BE F3EHIN0 THE LINE PICKUP KEYS THE LT TI ANO LR RI LEADS MUS...
Page 32: ...HE CASE OF EY TELEPHONE SETS 11 MUST BE BEHINU THE LINE PICKUP KEYS THE LT 11 ANO LR Rl LEAOS MUST BE CONNECTED INTO THE TELEPHONE SET IN SERIES UITH THE TIP AND RING PATH CONNECTION 141TH AO JUNCT DI...
Page 33: ...CORO 4A SPEAKERPHONE l 10B TYPE LSPK 020N MTG CORO m I 52d 08s II J NOTE FOR THE ONE TOUCH OPT ION ONLY ADD STRAP MIRE FROM TERMINAL 10 TO TERMINAL 35 INSULATE ANO STORE t SPARE TERMINAL D 1 61488 CON...
Page 34: ...IPPEO dlTI SPEAKERPHONE OlhL TONE DETECTOR ONLY FIG B PC iER SUPPLYBOAKI PSB m w M 1 LR zdl s4 P5 1 Y 5 i 5 BL 1 I INFlll 6 Y u s P4 PR I 7Q 0 13K P8 m7 RELAY vOD 10 0 o y 11 120 G4 13 o Y4 G 14 15 B...
Page 35: ...1 DP ON FIG B 01 AL T AE DETECTfXl P O 0 1 B0495 INPUT G R 01 INPUT G R 02 SPR Y EL 05 DTT BL Y 04 DT O Y 05 OR Y o 06 PB 0 BK 07 cm BK 0 08 PL O R 09 VOD R O 010 SPO G Y 011 LK Y G 012 FIG G 8EA 119...
Page 36: ...se t 1 y ONI l 3 I l c E l 0 180495 k Y I k PSB 6 SPO 327K i 1 m I 0 IOOE M2 s6 22 BL V 5 SPO G R 1 10OE i k e l 0 PSB 21 P4 Ws 1 m LT W4L PSB 16 BK BL I I v 1 1 M2SL 87 POWER 14 CORO q w I L 4 7 IP...
Page 37: ...E TOUCHCALLING ASSOCIATE TELEPHONE MuST BE EOUIPPEO wITH SPEAKERPHONE FIG B PUR SUPPLYBWIKI PSE SEE NOTE 1 I BR U Al o Wa 2 T1 I 30 R G 4 s w PR SPARE w s SPARE PB I 10QJ I I R BL RI o w RI INPuT LT T...
Page 38: ...AS50C IATEO TELEPHONE SET NUST BE EQUIPPEO HITH SPEAKERPHONE INSULATE ANO STORE SPARE TEP l NAL OR O 1614BB CONNECTOR INSULATE ANO STORE uNLESS ONE TCXJCH CALLING IS PROV 10EO ASSOCIATE TELEPHONE SETE...
Page 39: ...1E A D I AL TOW OETECTOR o I 80493 1 m w PSB I 7 MB71 TO TELEPNM SET SPO u w BR 5B 32 l G 0 w G PSB 34 PSB 18 ___ __ ___T II 327K 14 I IPSB 51 I 00 TO I G w I I I PSB 21 I 2 w G LINE G R I o w PSB I I...
Page 40: ...alled or 1 Check connector when off hook using dial but can manually defective memory cable adjunct dial dial using 870A1 dial 2 Replace memory only when ac power is disconnected Defective PSB Replace...
Page 41: ...nd up and at end of dial return Can manu ally dial off hook Lamp turns off as dial is Memory button was not Record per paragraph 5 01 returning and stays off depressed prior to the operation of the di...
Page 42: ...tage for 24 hours or longer IDisconnected or defec tive battery Defective memory Unknown Automatically dials Memory not securely through a WAIT mounted Improper connection to PSB terminal 23 Defective...
Page 43: ...onnections for D 180493 installation See Table B 1 Check connector cable 2 Replace memory does not correct pro blem I Addition of temporary strap lead between PSB terminals 11 and 20 corrects problem...
Page 44: ...ne turns off Memory button de Depress RECORD OFF phone off when OFF button is de pressed when TIP and button and then depress wired for ONE pressed but turns on RING not connected speakerphone OFF TOU...
Page 45: ...o audible TOUCH Power supply cable Check connector when off hook and TONE dialing signal connector not pre insertion using adjunct dial present perly inserted on memory Dial connectors not 1 Check con...
Page 46: ...when dial button on adjunct is depressed Replace memory I Replace adjunct dial I I 6 a Check RECORD OFF button Replace memory Cannot read into memory RECORD lamp momen tarily flashes when RECORD butt...
Page 47: ...logic Replace memory Replace 35 type dial MB7 relay operates clicking sound heard but holds for less than 0 1 second for a 15 digit number Incorrect dial sequence No audible TOUCH TONE dialing signal...
Page 48: ...440 Hz dial tone is when memory button present is depressed Memory not securely Tighten memory mounting mounted screws Improper installation Check connections of of dial tone detector D 180493 instal...
Page 49: ...e 19 and 29 on PSB are present or a defective TOUCH TONE service dial temporarily shorted dial tone detector tone 350 Hz and 440 Hz 2 If correct dial tone is present replace D 180493 dial tone detecto...
Page 50: ...SECTION 501 164 201 TABLE I Contd TROUBLE ANALYSIS 2870A1 DIAL ADDITIONAL I POSSIBLE I REMEDIAL SYMPTOM CAUSE ACTION Static discharge 1 Replace memory damage 2 Consult Telco engineer for proper groun...
