TDK-Lambda GENESYS 750W - Page 100

96
83507013 Rev G
Table 9-1: Troubleshooting guide
SYMPTOM
CHECK
ACTION
REF
No output. All displays and indicators
are blank.
Is the AC power cord defective?
Check continuity, replace if
necessary.
3.7
Is the AC input voltage within
range?
Check AC input voltage. Connect
to appropriate voltage source.
3.6
3.7
Output is present momentarily but
shuts Off quickly. The display
indicates “AC”.
Does the AC source voltage sag
when load is applied?
Check AC input voltage. Connect
to appropriate voltage source.
3.6
Output is present momentarily but
shuts off quickly.The display
indicates “OUP”.
Is the power supply configured to
Remote sense?
Check if the positive or negative
load wire is loose.
3.9.6
3.9.8
Output Voltage will not adjust. Front
panel CC LED is On.
Is the unit in constant current
mode?
Check Output Current setting and
load current.
5.2.1
5.2.2
Output Voltage will not adjust Front
panel CV Led is On.
Check if output voltage is
adjusted above OVP setting or
below UVL setting.
Set OVP or UVL so they will not
limit the output.
5.3
5.4
Output Current will not adjust. Front
panel CV LED is on.
Is the unit in constant voltage
mode?
Check Output Current and voltage
setting
5.2
Large ripple present in output.
Is the power supply in remote
sense?
Is the voltage drop on the load
wire high?
Check load and sense wires
connection for noise and
impedance effects. Minimize the
drop on the load wires.
3.9.4
3.9.8
No output. Display indicates “OUP”
Overvoltage Protection circuit is
tripped.
Turn off the AC power switch.
Check load connections. If Analog
Programming is used, check if the
OVP is set lower than the output.
5.3
No output. Front panel ALARM LED
is blinking.
Display indicates “ENA”
Check rear panel J1 ENABLE
connection.
5.8
Setup switch SW1 setting.
4.4
Display indicates “SO”
Check rear panel J1 Output Shut-
Off connection.
5.7
Display indicates “OTP” (O7P)
Check if air intake or exhaust are
blocked. Check if the unit is
installed adjacent to heat
generating equipment.
5.12
Display indicates “Fb”
Check Foldback setting and load
current.
5.5
Poor Load regulation.
Front panel CV LED is on.
Are sensing wires connected
properly?
Connect the sense wires according
to User’s Manual instructions.
3.9.8
The front panel controls are non-
functional.
Is the power supply in Local-
Lockout mode?
Turn Off the AC power and wait
until the display turns off. Turn on
the AC power and press front
panel REM/LOC button.
7.2.5