Chapter 5 Service Instructions
Revision W HF Series X-ray Generators - Service Manual
5-34 Quantum Medical Imaging, LLC
Not
Rotating
Systems equipped with a QMI Internal High-Speed Starter:
1. Wrong system configuration. 1. Access the Service Menu>Config-
uration screen and set the Rotor
Type to "QMI HSS".
Check if jumper JP1 on HSS
Driver Board A20A2 (AY40-036S)
is installed. If not, install it.
2. Faulty HSS Control Board
A20A1 (AY40-035S).
2. Using oscilloscope, observe the
following signals on HSS Control
Board A20A1 (AY40-035S) (Note:
Synchronize the trigger on CH1
when it is falling.):
• CH1 - connect to U7-16 and
GND
• CH2 - connect to TP19 and GND
• CH3 - connect to TP14 and GND
Press PREP. Verify during PREP
the signal on TP19 is 0 Volts (low)
and TP14 is oscillating all the time.
If TP19 is oscillating, replace HSS
Control Board A20A1.
Table 5-1. Error Messages and Possible Cause(s)
Error
Message
Possible Cause(s)
Remedial Action
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