Introducing the fault phenomena and repair methods of - ray machine bed and amplifier, as well as the repair method of Siemens accelerator preheating system fault
The Philips M 100 X X‑ray machine, produced in 1975, offers functions such as fluoroscopy, gastrointestinal spot photography, normal photography, tomography, video photography and video recording. Because the design relies heavily on discrete components and relay‑based control, it experiences a relatively high fault rate.
The manual details common failures, including a broken drive chain that prevents the examination table from moving, and a faulty image intensifier caused by an open resistor R1. It also includes a case study of a Siemens 6740 linear accelerator pre‑heat fault, illustrating voltage checks on control board TP1 points and component replacement procedures. This manual is written in Chinese.
| Production year | 1975 |
|---|---|
| Control method | Relay‑based control units |
An open resistor R1 in the intensifier’s control circuit caused the failure; replacing the resistor restored normal operation.
During normal pre‑heat the CP3 board TP1 voltage should be about 7.5 V; a measured 14.95 V indicates a fault.