TM 5-3610-253-14
d.
If continuity is not present, replace clamp ball valve (paragraph
e.
If continuity is present, extend circuit board KK. Check for continuity
of 119 to 129 ohms between connector 6 pin 6 and pin 32 a/c of KK board.
If continuity is not present, replace SCU motherboard (paragraph
f. Check for continuity between connector 6, pin 7 and pin 31 a/c of KK
board of 119 to 129 ohms. If continuity not present, replace SCU
motherboard (paragraph 5-40.34). If present, replace circuit board KK
If fault is not corrected, replace transformer SCU.T2. This will involve
g.
replacement of the SCU motherboard (paragraph 5-40.34).
Reinstall circuit board KK.
h.
i.
Reinstall front and rear electronics enclosure covers.
5-40.10 Test Solenoid Y33 (Cutting Ball Valve).
MOS: 35E, Special Electronic Devices Repairer
TOOLS:
Flat Tip Screwdriver
5 mm Hex Head Key Wrench
Digital Multimeter
Extender Board
WARNING
Death or serious injury may occur from electrical shock unless power is
turned off before servicing.
Turn off power.
a.
(1) Turn Star-Delta switch to Y position, then to O position.
(2) Turn main power switch to O position.
b. Remove front and rear electronics enclosure covers.
Check for continuity across solenoid on plug connector 6, pins 2 and 3
c.
of 119 to 129 ohms.
d. If continuity is not present, replace cutting ball valve (paragraph
5-523
