Tweco 151 with SL100SV - Manual (Page 83)

Manual 0-4691 5-15 SERVICE
5
E2
E3
E1
Secondary
Transformer
#32
#27
Input Diode
(mounts to
center chassis)
E1
E3
E2
Fuse
LT1
E33
J25
E10
E20
E7
E15
E30
E27
E32
J26
E23
J23
J24
J34
J33 J32
J18 J29
J27
J43
E5
E6
E4 E12 E17 J30 J31
E22
Art # A-04640
IGBT
PCB
E12 E17
TP4
TP1
J15
J11
J17
J16
U1
IGBT
PCB
IGBT
Module
IGBT
Module
Logic Board
Not Shown
Main Printed Circuit Board Layout (logic board not shown)
6. Improper input power cable connections inside Power Supply
a. Refer to System Schematic and correct if needed.
7. Defective input power cable
a. Replace input power cable. Refer to subsection 5.09-L.
8. Fuse blown inside Power Supply
a. Replace internal Fuse per Subsection 5.09-C.
9. Line voltage above 10% tolerance (over voltage protection)
a. Reduce line supply.
10. Faulty Auxiliary Transformer (refer to Appendix pages, 28 VAC Circuit Diagram)
Measure for 28 VAC on Main PC Board from J23-1 to J23-3.
a. If voltage is not present, replace the Main PC Board.