C
HAPTER
3. M
AINTENANCE
P
ROCEDURES
3-23
02.9628.0010 CONFIDENTIAL
7-Oct-97
3.2.2 Luminaire Fault Isolation Procedures
3.2.2.1 Luminaire Powers Up, But Will Not Calibrate
Assuming the following:
•
Console is powered up and working properly.
•
Repeater unit is properly connected and working.
•
Lamp cable is good.
Step 1. At
VL4
lamp input connector, check for pushed in pins. Repair
as needed. Ensure that CPC connector is properly connected.
Step 2. Hard reset luminaire by removing and then resupplying power
to unit.
Step 3. With power applied to luminaire, check UCB seven segment
display.
a. Verify that decimal point is flashing in display. If not
flashing or if character “
8
” is appears, then replace UCB
and retest. Refer to Low Voltage Supply and Universal
Control PCB Removal and Replacement paragraph. Wait at
least 60 seconds for luminaire calibration.
b. If symptom persists, replace LVS and retest. Refer to Low
Voltage Supply and Universal Control PCB Removal and
Replacement paragraph.
Step 4. Check transformer and bridge rectifiers.
a. Remove UCB and LVS. At motherboard, unplug connector
at P8. Using voltmeter, verify proper voltages at
transformer as follows:
1) Set voltmeter to DC.
2) Apply power to luminaire.
3) Place black probe of voltmeter in P4 of transformer
connector (GND).
4) At motherboard, place red probe on each of following
pins to verify voltages.
P8 - 1 = +10 - 20 VDC
P8 - 2 = +35 - 45 VDC
P8 - 3 = +35 - 45 VDC
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