Ecoray HF-525Plus - Page 207

207
Technical Publication Document NO: SYSTEM-007-ENG (Ver.1.1)
HF-525Plus Installation, Operation and Service Manual
12.4.6 IGBT_OCP trouble or Error Pro - I- - error (XR7-FnD Board)
1) Consist of PCB
2) Check procedure about Board
(1) Board Name: XR7-FnD Board
(2) Functions: Controlling IGBT and Tube Filament
(3) Check wiring condition of XR7-FnD Board and then check IGBT_OCP trouble when IGBT Device signal
and protection circuit trouble. Check procedure is as follows.
Normal Operation
Under defective
How to check and repair
1. Fix the Connector (P504) (connected to
IGBT current sensor)
2. Detect waveform between U519 pin 7 and
Heat sink (U406).
3. If the waveform is nor normal, adjust
VR502 to make proper waveform.
4. This setting is always completed in factory,
so do not adjust VR502 except educated
engineers.
5. In case IGBT_OCP circuit is out of order,
please change IGBT or call Service center.
Error comes
when X-Ray
exposure
Set exposure value
Push Ready button
X-ray exposure is done
Push X-ray button