VARILITE VL4 - Luminaire Fault Isolation; Luminaire Fault Isolation Chart

C
HAPTER
3. M
AINTENANCE
P
ROCEDURES
3-21
02.9628.0010 CONFIDENTIAL
7-Oct-97
3.2 Luminaire Fault Isolation
3.2.1 Luminaire Fault Isolation Chart
Assuming that all other system components are working properly and that
proper system power has been supplied to the luminaire:
Symptom Probable Cause Corrective Action
Luminaire powers up, but will not
calibrate
Bad UCB
Bad LVS
Bad bridge rectifier
Bad transformer
para. 3.2.2.1
Luminaire calibrates, but will not
come on line
Input connector pins pushed in
Loose UCB connection
Bad UCB
para. 3.2.2.2
Luminaire has no power Input connector pins pushed in
Blown VSB 3A fuse
Bad VSB
para. 3.2.2.3
Luminaire powers up, but
recalibrates repeatedly
Loose YTB/MBD connection
Bad pan or tilt mechanism
Bad LVS
Bad UCB
para. 3.2.2.4
Lamp will not start Bad lamp
Bad APS
Bad UCB
Bad ignitor board or lamp wires
para. 3.2.2.5
Douser not working properly Loose connection at YTB
Bad UCB
Dashpots out of adjustment
Loose or missing douser spring
Damaged douser leaves
Damaged ring washers
Damaged ring
Bad solenoid
para. 3.2.2.6
Dimmer iris not working properly Loose connection at YTB
Bad UCB
Damaged iris leaves
Bad sensor
Loose/broken belt
Incorrect washer/spacer stacking
para. 3.2.2.7
Diffuser not working properly Loose connection at YTB
Bad UCB
Broken diffuser glass
Bad sensor or motor
Loose/broken belt
para. 3.2.2.8