4-12. UNIT TROUBLESHOOTING (continued).
13. MAIN FRAME DOES NOT LOAD IN MANUAL MODE (MODEL A ONLY)
(1) Open hydraulic cabinet cover.
(2) Loosen four screws on main junction
box cover and open cover.
Electrical power must be shut off
be checked. Failure to comply with
this caution may result in damage
to test equipment or electrical sys-
WIRING REMOVED FOR CLARITY
A reading of infinity indicates an open
(4) Connect multimeter to terminals at
each end of wire, and check
between main junction box connector
(J4), position H, and terminal strip,
position 15. Also check between main
junction box connector (J4), position
MAIN JUNCTION BOX
Q, and terminal strip, position 16.