Bell System Practices F-56593 Identification, Installation, Connections, And Maintenance Download | Manualshive

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Summary of Contents for F-56593

Page 1: ...6171 Dial In Handset 1 02 It i s rei s sued to d e lete all r e fe r ences to portable type installations Since this r eissue cover s a general revision margin al a r r ows ordinar ily use d to indicate changes hav e b een omitted 1 03 This hands et is design ed prima rily for us e in hospitals and othe r s i m ilar in stitu tions However it may b e installed e ls ew h ere Note Do not confuse thi ...

Page 2: ...s on the dial number plate and amber side lamp are illuminated by edge lighting from a 53A lamp Power for the 53A lamp is supplied by a 2012A transformer or equivalent via line switch contacts in the tele phone base Illuminated side lamp indicates t h e handset is off hook 2 06 The number card holder Fig 2 accom modates Form E5002A number card The clear plastic retainer may be removed by using a K...

Page 3: ...Use a kS 16750 List 2 releaser or equivalent for removal of plate 2 14 The PIA ringer has a volume c ontrol oper ated by a l eve r extending from the right side of the base mounting See Fig 6 A ringer cutoff is made a v ailable by the remov al of a stop s c r e w t hrough an open ing in the gong See Fig 5 2 15 Figs 4 5 and 6 show the PlA ringer with adapter The figures also show the loc a t ion of...

Page 4: ...58 IDENTI FlCATION PLATE LINE SWITCH PLUNGER F 56594 Base Fig 4 LINE SWITCH ARM Kl RECALL RELAY a TERMINAL BOARD OPENING FOR RINGER BIAS ADJ OPENING FOR STOP SCREW MTG CORD OR IW HIGH TENSION BIAS 63A P 27E070 STOP SCREW RESONATOR NOTCH SPRING GONG REMOVED I ADAPTER PlA Ringer With Adapter F ig 5 ...

Page 5: ...appearance of installation 3 03 Selection of location and method of in stalling shall be consistent with existing standard practices See Figs 7 and 8 3 04 The telephone handset F 56593 is shipped from the factory with the tip party identification screw in an open position See Fig 2 3 05 Whe n tip party identification is required the screw type switch shall be tightened firmly When no longer requir...

Page 6: ...TCI Library https www telephonecollectors info SECTION 502 150 901PT Page 6 INSIDE WIR E TO TRANSFORMER Typical Wall Installation Fig 7 20 12A TRAN SFORMER 2A CLAM P Transformer Installation Fig 8 ...

Page 7: ...ugh the backplate from be hind the backboard AC and DC Power Supply 3 11 Power for the 53A lamp and Kl recall rela y is furnished from the same 10 or 18 volt AC power transformer This AC voltage is rectified to DC 11 to 20 volts in the F 56594 base 3 12 The 53A lamp is a 10 volt AC lamp while the K l recall relay r e quires 11 to 24 volts DC for proper operation The minimum DC voltage for operatio...

Page 8: ...y This required modifi cation is done in the F 56594 base The modifica tion will lower the AC v olta ge to acc omtnodate t he 53A lamp To modify the 53A lamp circuit Move the BK lamp lead on punching 7 to spare G punching Conne ct a 124 ohm 5 watt resistor No 227A or equi valent b e tween punch ings 7 and G Page 8 In the event the G punching is being used for party identification and ringer connec...

Page 9: ...le D 3 26 If an extension ringer is required use a 687B subscriber set or equivalent Refer to connection information in this section Fig 15 and appropriate sections covering subscriber sets and polarized ringing 3 27 When extreme noise inductions exist a condition which usually requires the use of a 3 e lement tube connected without the control gap across the line use a 74A connecting block rather...

Page 10: ...tch contacts Loose conne ctions Defective 854A network flex circuit or components See Fig 3 Dirty or worn dial contacts Page 10 Transformer or power supply 74A Connecting block 4 03 If transmission trouble is in the 854A network replace the handset Dial 4 04 Parts replacement is limited to finger wheel and finger stop Refer to section on 1OA Dials 4 05 To replace a defective lOA dial it is necessa...

Page 11: ... the length of inside wire does not exceed 250 feet or 19 ohms Iss B SECTION 502 150 901PT Cords 4 09 To replace the plug ended handset cord Use a KS 16750 List 2 releaser or equivalent Insert tool in space provided Apply pressure against spring clip toward body of plug See Fig 14 Pull plug out of jack when spring clip has been compressed 4 10 Five conductor mounting cords from Table A or equivale...

Page 12: ...TCI Library https www telephonecollectors info SECTION 502 150 901PT Page 12 Replacing Dial Light Fig 13 PRESSURE APPLIED Removing Cord from Handset Assembly Fig 14 ...

Page 13: ...phonecollectors info Iss B SECTION 502 150 901PT LINE 6878 SUBSET HANDSET RINGER s ffii GRO RING PARTY t TIP p PARTY LI 687B Subscriber Set Connections Fig 15 i i TO EXTENSION RINGER STATION TO EXTENSION RINGER STATIOlll Page 13 ...

Page 14: ...NTING CORO CONDUCTORS INSIDE WIRE CONDUCTORS INSULATED ANO STORED t FOR TIP STATION REVERSE R I NG ANO T I P LEADS AT CONNECTING BLOCK USE BRIDGING CONNECTORS OR EQUIVALENT I I A B NOTES 1 FIVE CONDUCTORS REQUIRED BETWEEN 74A CONNECTING BLOCK AND TELEPHONE BASE K 2 TWO INSIDE WIRES ARE REQUIRED ONE QUAD AND ONE PAIRED OR TWO TRIPLES 3 DISCONNECT S L INE SWITCH LEAD FROM A OF TERMINAL BOARD INSULAT...

Page 15: ...2650 A Central Office tighten screw switch located under number card 2 Ground may be omitted if not required for Service not re quired for protection of dial light transformer 3 To permanently silence ringer Remove R Ringer lead from K on Terminal Board Insulate and store For Tip Party dent BK Ringer lead must be on B of Terminal Board 4 Terminated on bridging connector with Y Tip dent lead when 7...

Page 16: ...erminal board insulate and store 2 Do not connect station ground or AC transformer ground together at any time Connection in base F 56594 Removal of these leads clears punching B for diode termination t Must be installed in this position p___ 1 Punchings on 1044A Connecting Block r Mounting Cord or Inside 426N Wire at Terminal Block Diode t R G y w BK CD L2 Ll 3 G 1 L2 B L2 Ll 3 L2 Ll 3 G 1 L2 B L...

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