TM 5-4220-227-14 Section II.  MAINTENANCE ALLOCATION CHART FOR RECOMPRESSION CHAMBER, DIVER’S (1) (2) (3) (4) (5) (6) Maintenance Level Direct General Unit Support Support Depot Group Component/ Maintenance Number Assembly Function C O F H D Tools Remarks 0306 FLUORESCENT Replace 0.5 LAMP Repair 0.2 1.0 1 ASSEMBLY 0307 WIRING HARNESS Test 1.0 Replace 1.5 1 Repair 0.3 3.0 1 H 04 COMMUNICATIONS Replace 1.5 1 A SYSTEM INTER COM 0401 COMMUNICATOR Test 0.1 ASSEMBLY Replace 0.5 1 (2820-4003) Repair 4.5 1,2, 6, 10 A 040101 FRONT PANEL Replace 1.0 1 CHASSIS Repair 1.5 1 C ASSEMBLY 040102 CIRCUIT CARD Replace 1.0 1 ASSEMBLY 040103 BATTERY SENSE Replace 1.0 1 CARD ASSEMBLY 040104 BATTERY CARD Replace 1.0 1 C AND  CASE Repair 0.3 1.5 1 H 0402 MICROPHONE Replace 0.1 0403 HEADSET Replace 0.1 0404 SOUND POWERED Replace 0.2 1 PHONE AND BRACKET 0405 SPEAKERS Replace 0.7 1 B-8