Toa VX-3000DS CE-GB - Manual (Page 27)

27
Trouble Shooting
The different faults described below are indicated on the front panel
(Figure 4). Refer to the explanation below.
AC POWER BATTERY
IN1
IN2 POWER
CONNECT
CONDITION
POWER SUPPLY MANAGER VX-3000DS
CHECK
CHARGING
Figure 4: indications on VX-3000DS
Charger Fault
A charger fault occurred when the indications “Charging“ and “Battery Connect“ extinguish on the VX-3000DS.
Reason Measures
Battery not connected or Charging circuit
faulty
Check the battery connections. Clean the connectors or fix
the connectors when necessary.
The temperature of the temperature sensor is
higher than that of the battery or disconnected.
Install the temperature sensor as recommended. (p. 26)
At least one of the fuses at DC output terminals
“POWER OUT 19-33V MAX 5A” or “POWER
OUT 19-33V MAX 25A” blown.
Check each fuse to find which one is blown. Then, replace
the blown fuse with the supplied one. If the fuse blows again,
consult your TOA dealer.
Internal fuse (15 A) of the VX-3000DS blown.
Consult your TOA dealer.
Either or both fans do not operate.
Battery Fault
Reasons of a battery fault indication:
1. resistance increase at the contacts due to corrosion
2. the battery’s internal resistance is too high.
Determination of the resistance of the cable and connectors
Case 1 can be checked with a voltmeter (multi-meter) with a resolution of 1 mV. It is used for measuring the
voltage losses of the cables and connections. The voltages are to be added, then sum to be divided by 5 to
obtain the resistance.
Check procedure 1:
The measuring tool must be able to indicate the voltage quickly or must provide a peak-hold function because
the current for the measurement is supplied for two (2) seconds only.
Measure of the voltage of each cable path after depressing the battery check button of the VX-3000DS. When
A fuse vis in the path must be included in the measurement. Proceed one measurement per minute maximum.