TM 1-1520-238-23 Change 3 B-109 (1) (6) (5) (4) (3) (2) MAINTENANCE LEVEL GROUP NUMBER REMARKS CODE TOOLS & EQUIP REF CODE DEPOT (D) AVIM (F) AVUM (O) MAINTENANCE FUNCTION COMPONENT/ASSEMBLY 080701 PRINTED CIRCUIT BOARD TEST 0.3 27, 31, AN REMOVE 0.3 35,129, INSTALL 0.3 154, 346, REPAIR 0.6 378, 437 080702 SWITCH MODULE TEST 0.3 346, 378 ASSEMBLY REMOVE 0.4 INSTALL 0.4 REPAIR 0.5 080703 CIRCUIT CARD REMOVE 0.4 223, 346, AN ASSEMBLY INSTALL 0.4 378 REPAIR 0.6 080704 CASE ASSEMBLY, INDICATOR REPAIR 0.2 27, 35, 129, 154, 262, 346, 378, 437 080705 MOTHER BOARD WIRING REMOVE 0.6 27, 35, INSTALL 0.6 129, 154, 262  346 REPAIR 1.1 , , 378, 437 080706 PANEL, FRONT, SUB REMOVE 0.3 378 ASSEMBLY INSTALL 0.3 REPAIR 0.2 080707 PANEL, INTEGRALLY, REMOVE 0.3 378 ILLUMINATED INSTALL 0.3 080708 VOLTMETER, DIGITAL REMOVE 0.3 378 INSTALL 0.3 0808 SIGNAL DATA TEST 0.3 0.3 378 CONVERTER REMOVE 0.3 INSTALL 0.3 REPAIR 0.3 0.3 080801 REGULATOR BOARD TEST 0.3 35, 223, REMOVE 0.3 346, 378, INSTALL 0.3 437 REPAIR 0.7