Service manual

LUMISCAN ACR-2000 READER SERVICE MANUAL - SECTION 5.0 SERVICE ADJUSTMENTS
5-9
4. Connect the DVM to TP1 of the PMT Preamp PCA, with the black (-) lead on the pin
toward the bottom.
5. Adjust R8 on the PMT Preamp PCA to obtain a voltage of +0.0 millivolts, + 0.1
mv.
6. Replace the Front Enclosure.
7. Disconnect the DVM and re-enable the PMT High Voltage.
5.4.2 PMT Output Voltage Preliminary Check
1. Dim the room lights, cover the unit with a dark cloth.
2. Run DDT/10 and enter a “p”. The display should look as follows: