X-Ray Arman 9L5 repair - control panel.

The main failures of the control unit of the X-ray Arman 9L5 apparatus.

Oxidation of the contacts galletnyh switches.
Oxidation button contacts.
Oxidation of contacts on the connector of the X-ray control panel.

The control panel of the X-ray machine Arman 9L5.

The Arman 9L5 control panel consists of two galetny switches with sets of resistances for each position, one button, one LED, one piezoelectric element - a boozer.

Kilo Volts (KV) Switch. The value of the resistor.

50kV - 43k2
60kV - 36k1
70kV - 30k9
80kV - 27k1
90kV - 24k

The number wire.

42 - central contact of the KV Switch.
41 - common wire of the resistors KV Switch.

Connector. Matching contacts.

The wire 41 - A1.
The wire 42 - A2.

The switch mA/Sec. The value of the resistor.

1.5 mAs - 1k
2.5 mAs - 1k8
4 mAs - 4к02
6 mAs - 6k04
10 mAs - 10k
15 mAs - 15k
25 mAs - 24k9
40 mAs - 40k2
60 mAs - 60k4
100 mAs - 100k

The wires.

25 - central contact of the switch mAs.
30 - common wire resistors switch mAs.

Connector. Matching contacts.

The wire 30 - А3.
The wire 25 - А4.

Wire numbering.

25 central contact of the mAs switch.
30 common wire resistors mAs switch.
42 central contact of the kV switch.
41 common wire resistors switch kV.
7 - a common plus for the LED diode, tweeters, buttons.
51 - squeaker and LED.
55 - button.

Connector of the control panel. Matching contacts.

The wire А1 - 41
The wire А2 - 42
The wire А3 - 30
The wire А4 - 25

The wire B1 - 55
The wire B2 - 51
The wire B3 - 7

Checking the control panel of the X-ray Arman 9L5.

Check LED.

To test the LED and partial check of the button, you need to apply 5-12V DC voltage to the connector pins.

B1 - plus 5-12v.
A2 - minus.
When you press the button, the LED should light up.

Check boozer.

Connector. Pin B3 and B1.

Checked by a tester or any voltage 5-12V.

With each reversal of polarity on the contacts B3 and B1, the boozer should click.

Reverse polarity is needed because the squeaker is a ceramic capacitor. Clicks only when recharging capacity.

Check button.

Measure with a digital ohmmeter resistance at the terminals of the connector B3 and B1.

When the button-on, the resistance should be less than 0.1 ohm.
When the button-off - infinity.

Check the KV (Kilo Volts) switch modes of the digital tester.

Measure the resistance at the terminals of connector A1 and A2 at each of the 5 positions.

Resistance is not falsely different from the one specified for this switch by more than one unit of indication of the least significant digit.

The readings should not change when the switch is turned on again.

Check the mAs switch modes of the digital tester.

Measure the resistance at the terminals of connector A3 and A4 at each of the 10 positions.

Resistance is not falsely different from the one specified for this switch by more than one unit of indication of the least significant digit.

The readings should not change when the switch is turned on again.