ARMY TM This copy Is a reprint which Includes current NAVY NAVELEX pages from Changes 1 through 3.

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1 ARMY TM This copy Is a reprint which Includes current NAVY NAVELEX pages from Changes 1 through 3. DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL AUTOMATIC TELEPHONE CENTRAL OFFICES AN/TTC-38(V)1 (NSN ) AND AN/TTC-38(V)2 (NSN ) DEPARTMENTS OF THE ARMY AND THE NAVY FEBRUARY 1974

2 TM NAVELEX TECHNICAL MANUAL T0 31W2-2TTC NO DEPARTMENTS OF THE ARMY } TECHNICAL MANUAL THE NAVY NAVELEX AND THE AIR FORCE TECHNICAL ORDER WASHINGTON, D. C., 28 February 1974 TO 3lW2-2TTC DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL AUTOMATIC TE LE PHON E CENTRAL OFFICES AN / TTC-38(V)1 AND AN / TTC-38(V)2 There are seven manuals in this series. Each manual has a separate contents. Paragraph Page CHAPTER 11. SCHEMATIC DIAGRAMS General Schematic diagrams LIST OF ILLUSTRATIONS Figure Title Page Standard color codes FACP panel schematic MCP panel schematic SSP panel schematic Schematic diagram remote operator module Schematic diagram power system Interconnecting cable diagram power shelter Control transfer relay schematic diagram Wiring diagram-shelter pictorial Distribution panel resistor board schematic Terminal interface Scan control Auxiliary sender/receiver (S) Auxiliary sender/receiver amplifier Bus crossover A Bus crossover B Common battery line adapter DC closure line adapter card A DC closure line adapter card C Hz ringdown line adapter AUTOVON adapter card B SF/ DC terminal Scan receiver (R) Scan receiver (D) Common equipment/adapter interface Common equipment interface Terminal status return AUTOVON / SF adapter card C Matrix A Matrix B Error return summary card Hz generator relay Sender / receiver (R) Sender / receiver (DL) Sender / receiver (DH) Sender / receiver (S) Hz generator A Hz generator B TM NAVELEX 0967-LP /TO 31W2-2TTC Figure Title Page Low voltage detector Operator position, 3-voice Operator position, Display module, type I Display module, type Display module, type Display module, type Display module, type Display module, type Display module type Display module, type Hz ring generator assembly,, Hz ring generator module assembly Patch plug / cable tester NTS power control panel assembly Power relay assembly AN/TTC-38(V) Power relay assembly AN/TTC-38(V) Operator position Interconnecting signal cable diagram shelter Modem wiring diagram Modem selector switch wiring diagram Schematic diagram, modem keyer Schematic diagram. modem converter Schematic, diagram, modem power supply Deleted Modem keyer assembly Modem converter assembly Modem power supply assembly Schematic diagram, inverter logic ant regulator circuit Schematic diagram, inverter low voltage power supply shutdown and drive circuit Schematic diagram, inverter, power, static Schematic diagram, battery charger Battery charger CR assembly, wiring diagram Battery charger wiring diagram Battery charger control board No. l wiring diagram Battery charger control board No.2 wiring diagram Battery charger control board No.3 wiring diagram Battery charger capacitor panel wiring diagram Battery charger output panel wiring diagram Battery charger input panel wiring diagram Battery charger SCR transient suppressor wiring diagram Battery charger interconnection diagram Schematic diagram, power supply, AC-DC (PS24) Schematic diagram, memory timing and control Schematic diagram, memory data loop prime Schematic diagram. memory data loop expansion Schematic diagram, tape reader Schematic diagram. motor drive assembly Schematic diagram. error detector and motor sequence logic Schematic diagram, input logic Schematic diagram, photo amplifier Schematic diagram, servo amplifier Schematic diagram, auxiliary send/receiver (DM) Schematic diagram, service terminal Schematic diagram, 1600 Hz line/trunk adapter Schematic diagram. AUTOVON/SF adapter card A Schematic diagram, commercial DTMF line circuit. I l NAVELEX 0967-LP-462-BW3 Change3 i

3 TM /NAVELEX 0967-LP /TO 31W2-2TTC Figure Tittle Page Schematic diagram, tone source A Schematic diagram, tone source B Schematic diagram, tone source C Schematic diagram, tone source D Schematic diagram, conference bridge Logic diagram, bus ringer timing Schematic diagram, bus ringer amplifier Schematic diagram crosspoint driver Schematic diagram, operator position, DTMF receiver, card Logic diagram, operator position No Schematic diagram, type IDC-DC converter Schematic diagram. type 2 DC-DC converter Schematic diagram. type 3 DC-DC converter Schematic diagram, type 4 DC-DC converter Schematic diagram. type S DC-DC converter Schematic diagram. type 6 DC-DC converter Schematic diagram, type 7 DC-DC converter Schematic diagram, type 8 DC-DC converter Change 1 ii

4 CHAPTER 11 TM / NAVELEX SCHEMATIC DIAGRAMS General This chapter contains schematic diagrams for assemblies and printed circuit cards in AN / TTC 38(V)(*). Diagrams are arranged in assembly reference designator order. Where schematic is identical for several assemblies or printed circuit cards, only the drawing for the lowest numbered reference designator is provided Schematic Diagrams 11-1

5 TM /NAVELEX Figure Standard color codes (sheet 1) 11-2