If any one of the above LEDs fails to illuminate then either the LED is broken or an
internal problem exists in the control cabinet. This may be either in the wiring or the
To check that the LED on the launch frame electrical control enclosure MIMIC panel
is not faulty operate the lights test switch on the Interface Enclosure. If all the
LEDs on the launch frame electrical control enclosure MIMIC panel function as
described on the MIMIC panel grid then check that, the LEDs on the actual plugs for
each solenoid are working.
CRUSH HAZARD. BEFORE CARRYING OUT TROUBLESHOOTING INVOLVING SV10, A
SUSPENDED OR PART BUILT BRIDGE MUST BE MADE SAFE EITHER BY COMPLETING
THE BUILD OPERATIONS IN BACK-UP MODE OR BY RETRIEVING THE BRIDGE. FAILURE
TO HEED THIS INSTRUCTION COULD CAUSE DEATH OR SEVERE INJURY TO
CRUSH HAZARD. A SUSPENDED BRIDGE WILL MOVE IF SV10 IS MANUALLY OPERATED
AND THE CHEST PACK RIGHT-HAND JOYSTICK IS MOVED FROM THE CENTRAL
POSITION CAUSING ACTIVATION OF OTHER SOLENOID VALVES. FAILURE TO HEED
THIS INSTRUCTION COULD CAUSE DEATH OR SEVERE INJURY TO PERSONNEL.
Identify the actual solenoid in question and check that the LED within the connector
is functioning. If the LED is illuminated on the solenoid valve connector, then the
problem is likely to be within the solenoid itself or the valve block. To operate the
valve manually, refer to Back up Mode (Chapter 7) and set the valves as described
for the current function and operate the system. If the system works correctly then
the solenoid itself may be faulty or the valve may be seized.
If the LED is not illuminated then the fault is likely to lie within the cabling between
the control cabinet and the solenoid or within the plug itself. To operate the valves
manually refer to Back up Mode (Chapter 7) and set the valves as described for the
current function and operate the system.
The tilt roller, stow functions and roller brakes work independently of the main joystick.
The operation is only available at certain functions, and the solenoids only function when
the joystick on the left of the chest pack is operated.