Trouble shooting of the A+6.5V output abnormal operation
This voltage Line is supplied to MAIN Assy from MAIN POWER SUPPLY Unit via DD Assy. Please check board to board connection first if A+6.5V is abnormal. e.g.) pin contact of connector, short between wire
From POWER SUPPLY unit
P12 CN304 (pin 1)
PV CN306 (pins 3 and 4)
To MAIN ASSY
B
From POWER SUPPLY unit
P8 CN302 (pin 1)
DD ASSY
Flowchart of Failure Analysis for The SLOT Power Supply
C
Failure analysis for the SLOT power supply Are 12V supplied to pins 1 and 2 of CN4001? Yes Are 16.5V supplied to pin 5 of CN4001? Yes Are 13.5V output from pin 3 of IC4003? Yes No No Failure in the DD Assy, POWER SUPPLY Unit or harness ADX3435 No Failure in the DD Assy or harness ADX3435
Failure in the IC4003
D
Are 3.3V supplied to pins 7 and 8 of CN4001? Yes Are 3.3V supplied to pin 11 of CN4001? Yes Failure analysis for the Each SLOT Input terminals
No
Failure in the DD Assy, POWER SUPPLY Unit or harness ADX3435
No
Failure in the DD Assy, POWER SUPPLY Unit or harness ADX3435
