TM 5-6675-319-14
9-20.21 Replace Printed Circuit Card(S).
MOS:
35E, Special Electronic Devices Repairer
TOOLS: None Required
SUPPLIES: Printed Circuit Card 3C2
Printed Circuit Card 3D2
Printed Circuit Card 3CC1
Printed Circuit Card VDSF-2
Rubber Matting
a.
Turn off MASTER POWER switch.
b . T u r n o f f c i r c u i t b r e a k e r.
WARNING
Death or serious injury may occur from electrical shock unless power is
t u r n e d o f f b e f o r e s e r v i c i n g.
You must stand on rubber matting as a protective measure before per-
forming this procedure. Death or serious injury may occur.
CAUTION
Never have printer hood down with power on and normal room lights on.
This condition will damage PMT.
c .
d.
Open operator’s console and lower cabinet door.
Remove screws and card retainer.
CAUTION
9-171
Before making any adjustments check all power supply voltages or machine
damage could occur.
e. Replace defective printed circuit card.
