TM 11-6625-3081-23
7-4. DC POWER SUPPLY ASSEMBLY 1A4
7 -4
INPUT CODE: FPSST
a .
DESCRIPTION
This module tests fixed power supplies 1A4PS1, 1A4PS2, 1A4PS3, and 1A4PS4. The
1A4PS1 28 vdc output is measured by using channel 226 of A/D converter assembly
2A2A13 and scaling accordingly.
A prompt is displayed if voltage is not +26.0 to +30.0 vdc.
The 1A4PS2 +15 vdc output is measured using channel 227 of A/D converter
assembly 2A2A13 and scaling accordingly.
A prompt is displayed if voltage is not +14.0 to +16.0 vdc.
The 1A4PS3 -15 vdc output is measured using channel 228 of A/D converter
assembly 2A2A13 and scaling accordingly.
A prompt is displayed if voltage is not -14.0 to -16.0 vdc.
The 1A4PS4 +5 vdc output is measured using channel 229 of A/D converter assembly
2A2A13, and scaling accordingly.
A prompt is displayed if voltage is not +4.5 to +5.5 vdc.
b. REPLACEMENT PROCEDURE REFERENCE
The following list provides a cross reference of replacement items to
replacement procedures.
The item column identifies the item to be replaced by
reference designation and part number.
The reference column identifies the
procedural paragraph used to perform the replacement action. The VDT screen will
display the proper sequence of repair/replace actions.
Item
Reference
(Ref Des/Part No.)
(Para No.)
1A4PS1/BKF-28-4
2-33
1A4PS2/BKF-15-6
2-33
1A4PS3/BKF-15-6
2-33
1A4PS4/BKF-5-11
2-33
2A2A13XX (SLOT J8)/AC4720
2-61
2A2A7A6A4/13082738
2-51
7-22
