Pentax 40 MZ-3i - Manual (Page 28)

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14. Special functions
Fig. 29: Locking the controls
Switching on the „Beep“ function
Press the
ቨ button and switch the function on (display 11 ) or off (display 00 )
with the + or - button
ቪ.
Locking the controls (key function)
Switch
ቫ locks all buttons and switches to prevent inadvertent readjustment
during flash operation.
The buttons /ML
ባ and ተ as well as the main switch ᕃ will not be
locked.
Switching on with the controls locked
If you switch the flashgun on with the controls locked, the operating mode indi-
cator in the LC display will blink. This is a reminder that you should:
- set the operating mode selector to the operating mode which is blinking (if it is
not already there) and
- unlock switch
ቯ and lock it again.
Always carry out these two steps, since incorrect exposures may
otherwise result (depending on the operating mode).
Locking
14. Special functions
Fig. 28: Switching on the beep function
The beep function can be used to indicate certain flashgun functions acoustical-
ly. An acoustic signal (beep) may be selected for the following situations:
• Flash readiness
• Correct exposure
• Incorrect operation (alarm)
An intermittent beep signalling alarm sounds:
• When, after loading a user program, the adjusted and stored operating modes
do not coincide.
• When, after calling a user program, a deviating ISO film speed is detected.
• When the flashgun is adjusted to auto mode, but the set values for aperture and
ISO film speed will exceed the light output control range. The aperture is auto-
matically adjusted to the next permissible f-stop.
• When the ISO film speed or the aperture are readjusted in the auto mode with
the result that the light output control range would be exceeded.
• When the camera transmits a focal length shorter than 24 mm.
• When the wide-angle diffuser is folded out, but the camera transmits a focal
length shorter than 20 mm.
• When the exposure is o.k. but flash readiness has not yet been reached.
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Beep function
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