Service manual

PN 4237242C
7.5-2
TROUBLESHOOTING
TROUBLESHOOTING POWER-UP PROBLEMS
Figure 7.5-2 Power-Up Troubleshooting Flowchart (part 2 of 2)
DRA1
GENERATES SIGNAL
FOR MOTOR/
SOLENOID
DRIVER CARD
MOTOR/SOLENOID
DRIVER CARD
GENERATES
POWER ON SIGNAL
BEGINS
SYSTEM
SELF-TEST
SYSTEM SELF
TEST IN
PROGRESS
FLOPPY DRIVE
LED TURNS OFF
FAIL
PASS
PERFORMS
+24 V TEST
ERROR DETECTED
(015) POWER
SUPPLY FAILURE
RUNS
POWER-UP
CYCLE
FAIL
PASS
PERFORMS
LINEAR PS
(DVM) TEST
DISPLAYS
"POWER
SUPPLY
FAILURE (014)"
MAIN MENU
TURNS ON
+24 V POWER
SUPPLY
A
7242048A
ERROR DETECTED
(014) POWER
SUPPLY FAILURE