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 TM 11-6625-2975-40
2-37. POWER SUPPLY FAN B1 REPLACEMENT. (CONT)
REMOVAL
Remove four screws (1) from bottom of chassis.
1.
2.
Remove two screws (2) from back plate (3).
Remove filter element (4) from element holder (5).
3.
NOTE
Raise circuit board assembly A5A1 (6) as needed to gain access to upper right fan
screw (7).
When performing next step, hold four rubber nut grommets to keep from turning.
4.
Remove four long screws (7) and (8) and pull fan (9) free from back plate (3).
5.
Remove cover (10) and grille (11).
Unsolder wht/red wire (12) from terminal (13) and grey wire (14) from terminal (15) and
6.
remove fan (9).
INSTALLATION
NOTE
Position fan wires as shown, Reversing wires will cause fan to operate in reverse,
1. Solder grey wire (14) to terminal (15) and wht/red wire (12) to terminal (13).
NOTE
Position fan with airflow arrow pointing toward chassis and wht/red wire (12) and grey
wire (14) at right lower corner.
Grille must be positioned with concave side toward fan.
2. Position grille (11) and cover (10) on fan (9) and position assembly on back plate (3).
NOTE
When performing next step, hold four rubber nut grommets to keep from turning.
3. Install four long screws (7) and (8).
4. Position circuit board assembly A5A1 (6) and install two screws (2) and four screws (1).
5. Install filter element (4) in element holder (5).
FOLLOW-ON MAINTENANCE: Install power supply assembly A5 (para 2-34).
2-59
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