Chapter 5 Service Instructions
Revision W HF Series X-ray Generators - Service Manual
5-40 Quantum Medical Imaging, LLC
Receptor
Not Ready
The signal on the Receptor Ready
terminal of the Digital Interface
Board A9 (AY40-034T) is not
ready within 500 ms from the time
PREP was initiated. This can be
caused by:
1. PREP was initiated before the
DR system could complete the
image acquisition and process-
ing cycle of the previously
acquired image.
2. The DR system has malfunc-
tioned.
3. The Digital Interface Board A9
(AY40-034T) has malfunc-
tioned.
1. Wait until image acquisition and
processing cycle is complete
before attempting to re-expose.
2. Verify the digital receptor (DR) sys-
tem is properly connected and is
operating normally.
3. Replace the Digital Interface Board
A9 (AY40-034T).
Rotor
Current
(Note: This error is only applicable
with QMI High-Speed Starter
equipped systems)
1. Incorrect/no reference voltage
on Control Board.
2. Incorrect overvoltage
adjustment.
3. Faulty connection between
HSS Driver Board A20A2
(AY40-036S) and Tube Rotor.
1. On HSS Control Board A20A1
(AY40-035S), measure voltage
between test points TP17 and
TP1(GND). Voltage measurement
should read +5.00 ±0.02 VDC. If
not, replace HSS Control Board
A20A1.
2. On HSS Control Board A20A1
(AY40-035S), connect DVM
between U20-7 and TP1(GND).
Adjust potentiometer R48 for volt-
age measurement of 2.8 - 3.0 volts
for small tubes (3") and 4.5 for
large tubes (4"). If proper adjust-
ment cannot be achieved, replace
HSS Control Board A20A1 (AY40-
035S). If voltage is still incorrect,
replace tube.
3. Verify wiring between TB2 and
TB4 on HSS Driver Board A20A2
and Tube Rotor is good. Correct if
necessary.
Table 5-1. Error Messages and Possible Cause(s)
Error
Message
Possible Cause(s)
Remedial Action
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