Nikon D300 User Manual (en)

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Error Messages
This section lists the indicators and error messages that appear in 
the viewfinder, control panel, and monitor.
Indicator
Problem
Solution
Page
Control 
panel
View-
finder
B
(blinks)
Lens aperture ring is 
not set to minimum 
aperture.
Set ring to minimum 
aperture (largest 
f-number).
35
H
d
Low battery.
Ready a fully-charged 
spare battery.
44
H
(blinks)
d
(blinks)
• Battery exhausted.
• Recharge or replace 
battery.
xxiii, 30, 
32
• Battery can not be 
used.
• Contact Nikon-
authorized service 
representative.
• An extremely 
exhausted 
rechargeable Li-ion 
battery or a third-
party battery is 
inserted either in the 
camera or in the 
optional MB-D10 
battery pack.
• Replace the battery, 
or recharge the 
battery if the 
rechargeable Li-ion 
battery is exhausted.
B
(blinks)
Camera clock is not set. Set camera clock.
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