GE H
EALTHCARE
D
IRECTION
2307224-100, R
EVISION
6
D
ISCOVERY
LS S
YSTEM
S
ERVICE
M
ANUAL
Page 318
Chapter 12 - Troubleshooting
12.2.2 Base Axis Does Not Move
If the base axis does not move, perform the following checks:
1.) Check if a mechanical interference exists.
2.) Check if the locking mechanism is malfunctioning and causing the limit switch to remain
continuously pressed.
3.) Disconnect the KBPB Supply Cable, P/N 2309061, from J1 on the KB Box.
a.) Measure the voltage between pins on the cable. This should be 120 VAC.
b.) If not, check for proper connection of the other side of the cable (between Cable P/N
2265683 [Power 120 VAC] and Cable P/N 2295961 [Table I/F J10 EXT] shown in
).
4.) Reconnect the cable.
5.) Check whether the clutch is engaged, i.e., the motor shaft is not rotating freely. If clutch is
disengaged, proceed to
.
6.) Verify that the motor is energized.
a.) Disconnect Cable P/N 2309067, and measure the voltage between Pins J4-1 and J4-2 on
the KB Box side. The expected voltage should be between 10-20 VDC.
b.) If no power is received, power off the KB Box by disconnecting both J1 and J3 connectors.
Open the KB Box cover by loosening the five screws, and check the internal fuses on the
driver board (See
.)
CAUTION
DO NOT POWER ON KB BOX WHEN CHECKING FUSES. HIGH VOLTAGE RISK.
)
Figure 12-1:
KB Box Driver Board Fuses
5 Amp SB
25 Amp SB
