Instruction manual

P84905-001 G
Sheet 19 of 37
Troubleshooting Using the LED Indicators
Power Supply/Battery Charger PC Board.
TB3
J2
BATTERY
TB1
TB2
N
L
GND
NC
COM
NO
D36
D35
D34
BATTERY TROUBLE
BATTERY CHARGER TROUBLE
MICROPROCESSOR TROUBLE
D21
D38
AC POWER
AC LOSS TRB
D24
BATTERY
POWER
JP1
Figure 12: Power Supply/Battery Charger PC Board Trouble LED Locations
Table 4: Power Supply/Battery Charger PC Board LED Trouble Indicators
LED
Designator
Identification
LED
Color
Description Action
D38 AC Power Green
Indicates when AC power is applied to the
PC board.
No Action Required
D24 Battery Power Green
Indicates when battery power is applied to
the PC board.
No Action Required
D34 Battery Trouble Amber
Indicates that a trouble condition exists on
the battery circuit.
Check the battery wiring and terminal
connections. Replace the batteries.
D35
Battery Charger
Trouble
Amber
Indicates that the battery charger section is
not working.
Remove the batteries from the
terminals. Using a DC voltmeter
check the voltage across the
terminals. The voltage should be
26.5VDC or higher. If the voltage is
not present, the battery charger
section has failed. Replace the PC
Board. If the voltage is present,
replace the batteries.
D36
Processor
Trouble
Amber
Indicates that a trouble condition exists on
the processor circuit.
Disconnect DC and AC voltages
from the power supply PC board.
Wait 10 seconds and reconnect. If
the problem does not clear, replace
the PC board.
D21 AC Loss Amber
Indicates a brown out or total loss of AC
power.
Check AC Mains is properly
connected. Check branch circuit
breaker powering the PS6/8. Check
the AC Mains Fuse, F1.
NOTE: Power Supply PCB trouble conditions will change the state of the Logic PCB General Trouble Relay after 33
seconds.