-80-
Chapt
er 6 Common
Tr
oubleshoo�ng
Reasons For The Device Cannot Start Or Keeps Rest
ar�ng
Reasons For Unable To Be Controlled By R
emo
te Control
Reasons For The PTZ Cannot Be Controlled
Reasons For Network Digital Video Recorder Previe
w Ima
ge Blurry
1. The NVR has upg
r
aded the w
r
ong firm
w
a
r
e and
c
aused the
syst
em
so�
w
a
re t
o be dama
g
ed.
2. The main boa
r
d of the NVR is fault
y
,please
c
o
nt
act the supplier for
r
epai
r
.
3. If the ha
rd disk
fails, please
r
eplace the ha
r
d disk.
aluminum p
r
ofile panels,please choose MINI.
F
or other pla
s
�c panels,
please choose 01, 02, 05,
et
c.
5. IVR IP add
ress c
o
n
flict.
1. Please check wh
e
ther the ba�
ery in the r
emo
te c
o
ntr
ol has been
inst
alled
c
or
rectly
,especially the posi�
v
e and ne
g
a�
v
e polarit
y
.
2. Please check if the ba�
ery in the r
emo
te c
o
ntr
ol is
s
�ll cha
rg
ed.
3. Check wh
ether the r
emo
te c
o
ntr
ol windo
w is c
o
ver
ed.
4. Please check wh
ether the r
emo
te c
o
ntr
ol add
r
ess of the NVR
ma
tches the r
emo
te c
o
ntr
ol add
r
ess.
1. The
RS-485 inter
face
c
able is in
c
or
rectly c
onnec
t
ed,and the A and B
ports a
re reversely c
onnec
t
ed.
2. The type,p
r
o
t
o
c
ol,baud
r
ate and add
r
ess bits of the
PTZ dec
oder a
re
not s
et c
or
rectly
.
3. The
RS
-485 bus is
c
onnec
ted t
o a la
rg
e number of
P
TZ and the
re is
the r
emo
t
e end.
4. The
RS-485 inter
face of the main boa
r
d is b
r
o
k
en.
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