3-6.
ISOLATE PRINTED CIRCUIT BOARD MALFUNCTIONS
a. If there is no display on the digital voltmeter, determine if the D3 pcb is
malfunctioning.
b. If the line compensation leds do not operate, determine if the D5 pcb is
malfunctioning.
3-7.
ISOLATE OTHER MALFUNCTIONS
a. If the power supply is not within the specified range of 109vac (minimum) to
133vac (maximum), the power supply requires replacement. Refer to Lesson 1,
paragraph 1-4b(7)(a) through (g) for test procedures.
b. If the exposure time pulse count is not within tolerance see Lesson 2,
paragraph 2-5(1) and (2).
c. If the dose levels are lower than specified, the X-ray head requires
replacement. To measure the dose, follow these procedures. Refer to figure 3-15.
Figure 3-15. Dose measurement.
MD0361
3-18