Chapter 12 641
Display/Power Supply Section
Power Supply
Troubleshooting Using the TAM (8560E only)
When using automatic fault isolation, the TAM indicates suspected
circuits that need to be manually checked. Use Table 12-4 on page 641
to locate the manual procedure.
+15 V 4 47 - - 47* - -
+15 V 3 48 - - 48* - -
−15 V 2 49 49 - 49* - -
−15 V 1 50 50 - 50* - -
* Indicates signal source.
Table 12-3 W1 Power-Cable Connections
Signal A2J1
(pins)
A3J1
(pins)
A4J1
(pins)
A5J1
(pins)
A6J1-
(pins)
A14J1
(pins)
A15J1
(pins)
Table 12-4 Automatic Fault Isolation References
Suspected Circuit Indicated by
Automatic Fault Isolation
Manual Procedure to Perform
Check A2 Controller Blanking Signal
Check All Power Supply Outputs Dead Power Supply (steps 1-5)
Check Buck Regulator Dead Power Supply (steps 13-23)
Check Buck Regulator Control
Circuitry
Dead Power Supply (steps 11-21)
Check High-Voltage Supplies High Voltage Supplies
Check Input Rectifier Dead Power Supply (steps 6-7)
Check Intensity Adjustments Intensity Problems (steps 1-4)
Check Kick Start/Bias Circuitry Dead Power Supply (steps 8-10)
Check Low-Voltage Supplies Low Voltage Supplies