3.2
Diagnosis
776 Dosimat
25
1.
Prepare instrument for diagnostic test (see chap. 3.2.3).
2.
<4>
timer dig. test
3.
<GO>
timer dig.
The frequency of the digital timer is measured during 1.5 s. If no fault is found, the following appears:
timer dig. o.k.
4.
<CLEAR>
diagn. key 0...9
3.2.8 Diagnosis of analog timer
The analog timer is that part of the electronic circuit in the dosimat which is responsable for the
analog spindle speed rate (adjustable with knob 'dV/dt').
1.
Prepare instrument for diagnostic test (see chap. 3.2.3).
2.
Turn knob 'dV/dt' fully to the right.
3.
<5>
timer ana. test
4.
<GO>
timer ana.
The frequency of the analog timer is measured during 1.5 s. If no fault is found, the following appears:
timer ana. o.k.
5.
<CLEAR>
diagn. key 0...9
3.2.9 RAM-test
1.
Prepare instrument for diagnostic test (see chap. 3.2.3).
2.
<8>
RAM test
3.
<GO>
The test runs automatically. If no fault is found, the following appears:
RAM TEST passed
4.
<CLEAR>
diagn. key 0...9
3.2.10 Diagnosis of spindle zero and cock changeover
1.
Power off.
