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www.bowensinternational.com

www.bowensinternational.com

Control Panel Guide

Warnings Signs and Troubleshooting

4

9

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If the unit appears to have developed a problem, first establish that it is a genuine internal problem and

not a case of normal operation such as overheating. Carry out the following checks to eliminate any

external causes. If no obvious problem can be found and replacement of the modelling lamp, flash tube

or flash head fuse does not eliminate the problem, then it is likely that an internal problem has

developed. Always return the unit to an authorized service centre if a problem is suspected after these

checks. UNDER NO CIRCUMSTANCES SHOULD YOU ATTEMPT ANY REPAIR YOURSELF.

• Overheat Warning 

The power pack is fitted with a thermostatically controlled fan, but under extreme conditions of use the

power pack may still overheat, even with the fan running. Flashing less frequently and/or using the

Slow Charge Mode will normally help prevent this from happening.

Overheat protection is provided to inhibit charging until the unit has cooled sufficiently to operate

normally. The Power Level Displays will flash “Overheat” warning while the overheat condition exists.

NOTE: The overheat condition remains until the power pack reaches a safe operating temperature or

the unit is turned off and allowed to cool. 

• Control Panel Does Not Light Up

If the Control Panel does not light up when the unit is switched on, first check the AC power-cord

connections and check to make sure the AC outlet is working. Under exceptional conditions of use or

component failure, the Internal Fuse may blow. This is designed to protect the unit. Report the problem

to your local service agent. DO NOT ATTEMPT TO LOCATE AND REPLACE THE INTERNAL FUSE

YOURSELF.

• Control Panel Lights Up But Ready Indicator Does Not Light Up  

If this happens, first confirm that the AC-line voltage is adequate and within the prescribed limits.

Confirm that the Flash Thermal Reset Button on the Rear Panel is pushed in. Under exceptional

conditions of use, this may trip. Switch the unit off, wait a minute, push the button in and then switch

power on again.

• Modelling Lamps Are Not Working

If all of the modelling lamps are not working, first check to see if the Modelling Thermal Reset Button

on the Rear Panel is out. If this is the case, DO NOT RESET IT until you have checked the head(s) for

blown bulbs and/or fuses.

• Power Pack Triggers Erratically

Check to see if the power pack is being triggered by another flash source by turning the photocell off.

Top Control Panel

Sync Sockets

Head 

Socket ‘A’

Head 

Socket ‘B’

Fast/Slow

Switch

(

Under Handle)

Carry Handle

Channel A

Power Level

Display

Channel B

Power Level

Display

Overall Power

Selector

Modelling

Mode Selector

Channel A

Variator

Channel B

Variator

Audio Switch
and LED

Photocell

Switch and LED

Test Button and 
Ready Indicator

Photocell

Window

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