Quantum QG-3200

Chapter 5 Service Instructions
Revision W HF Series X-ray Generators - Service Manual
5-12 Quantum Medical Imaging, LLC
Battery
Dis-
charged
Battery 2
Dis-
charged
Faulty stored energy cell in top
battery tray (Cathode on two tray
systems) or Line Monitor/Charger
board not adjusted correctly.
Faulty stored energy cell in bottom
battery tray (Anode on two tray
systems) or Line Monitor/Charger
board not adjusted correctly.
1.. Connect a DMM to Line Monitor/
Charger Board A8 AY40-028T
test point TP2 and ground. Verify
voltage is +204 to +206 VDC. If
not, adjust A8R70 to obtain cor-
rect voltage. If voltage cannot be
adjusted to correct value, replace
Line Monitor/Charger Board A8.
2. Connect a DMM between Line
Monitor/Charger Board A8 test
point TP3 and ground. Verify volt-
age is -204 to -206 VDC. If not,
adjust A8R66 to obtain correct
voltage. If voltage cannot be
adjusted to correct value, replace
Line Monitor/Charger Board A8.
3. Check each stored energy cell in
battery tray. Voltage of each cell
should be 12.5 VDC minimum. If
not, replace cell.
4. Check A8K1 and A8K3 operation
as follows: Turn A8R19 and
A8R60 fully counterclockwise.
Verify voltages between A8TP20
and GND and A8TP21 and GND
are less than 1.0 VAC. Turn
A8R19 and A8R60 fully clock-
wise. Verify voltage between
A8TP15 and GND and A8TP16
and GND are +283 VDC and -283
VDC, respectively.
5. Connect a DMM between A8TP21
and GND. Adjust A8R19 to mea-
sure +2.10 - +2.14 VDC.
6. Connect a DMM between A8TP20
and GND. Adjust A8R60 to mea-
sure +2.10 - +2.14 VDC.
Table 5-1. Error Messages and Possible Cause(s)
Error
Message
Possible Cause(s)
Remedial Action