HP laserjet m712 Guide De Dépannage
General timing charts
Figure 2-58
General timing chart
1
Pr
int c
om
m
and
2
Cas
sette pic
kup s
olenoid
3
TO
P
s
en
so
r
4
Fus
er output s
ens
or
LST
R
ST
BY
T
NI
R
P
R
T
NI
W
A
IT
ST
BY
Pow
er
O
N
Developing
bias
10
11
5
TO
P
s
ig
na
l
6
VIDEO
s
ignal
12
7
Sc
anner m
otor
8
Drum
m
otor
9
Fuser m
otor
Fus
er heater
Pr
im
ar
y c
har
ging bias
Pow
er
O
N
Developing
bias
T
rans
fer
bias
12
13
14
16
15
19
Static
c
har
ge elim
inator
bias
Fus
ing bias
Rear f
an
Front f
an
17
18
Fu
se
r f
an
Pow
er
O
N
21
22
20
25
23
24
Pow
er
O
N
ENWW
Tools for troubleshooting
171