TM  55-4920-413-13&P 4-12. Troubleshooting and Repair (ATST). sories required are listed in Tables 4-3 and 4-4. IDSL Test Set cable assemblies and circuit wiring diagrams are shown in Fig a. General. This paragraph contains general repair informa- ure  FO-5.  Troubleshooting  schematics  are  shown  in  FO-1 tion,  maintenance  instructions,  troubleshooting  procedures  and through FO-5. Troubleshooting Tables are 4-5 through 4-17. component  replacement  procedures.  Test  equipment  and  acces- Table  4-3.  Test  Equipment Common Manufacturer  and  Model Name (Part Number) or (Equivalent) AUTOTRANSFORMER General  Radio,  Model  W10MT3AS3  (7910809) DC POWER SUPPLY NJE,  Model  CS36CR30D2  (7907346-2) DIGITAL VOLTMETER¹ FREQUENCY   COUNTER OSCILLOSCOPE PRECISION OSCILLATOR FLUKE 8840A Hewlett-Packard,  Model  5345A MIS-28754/1,  Type  1) Tektronix, Type R5440 (MIS-28706/1 TYPE 1) w/5A48 (MIS-28706/3) and 5B42 (MIS-28706/4) HEWLETT PACKARD 8116A POWER SUPPLY Tektronic,  PS503A Table  4-4.  Accessories  Required Common Description Name (Part Number) ADAPTER’ BNC plug to double banana jacks (7907401) ADAPTER Single  banana  jack  to  pin  plug  (black)  (7907528) ADAPTER BOX BAN  jack  terminations  (79161  13)  (SKD4850-3) EXTENDER  BOARD Canadian  Marconi,  P/N  220-419916-000 LEAD 24-in., No. 18; single banana plug terminations (red) (7907497) LEAD’ 24-in., No. 18; single banana plug terminations (black) (7907498) LEAD² Pin jack to single banana plug (7921032) LEAD’ 32-in., single banana plug to test hook (red) (7915941-1) LEAD 2 single banana plug to ac power plug (7907551) ¹Two  required. ²Five  required. 4-4 Change  1