TM 5-4520-253-13
PRINTED CIRCUIT (PC) BOARD ASSEMBLY PROCEDURES INDEX
PROCEDURE
I
PAGE
Rernove/install PC Board Assembly
4-12
Repair PC Board Assembly Wiring Receptacle
4-21
Repair PC Board Assembly Wiring Terminals
4-24
Repair PC Board Assembly Harness Receptacle and Plug
4-26.1
Test PC Board Assembly
4-26.4
REMOVE/lNSTALL PC BOARD ASSEMBLY
TOOLS: Tool kit, service, refrigeration unit
NSN 5180-00-596-1474
MATERIALS/PARTS: Sealant (Item 10, Appendix E)
GENERAL SAFETY INSTRUCTIONS:
Power off.
Heater cool.
REMOVAL:
Death or serious Injury could occur if precautions are not
taken when maintaining this equipment. Position HEATER-
OFF-FAN switch to OFF, remove power cable plug from
POWER RECEPTACLE, and ground capacitors C1 and C2
prior to gaining access to heater compartments. Terminals
of capacitors are accessible at end cover of combustion
blower. Always have another person standing by who Is
trained In electric shock first aid.
Allow suffcient time for heater to cool to room temperature
before gaining access to heater compartments.
1. Open control box cover(1), front access door (2), and right side door (3) by unlocking studs (4, 5, and 6)
4-12
Change 2
