HP LaserJet Enterprise M552 - Page 207

Figure 2-70 General circuit diagram 1x550-sheet paper feeder
A
6 5 4 3
2
1
B
C D
2121
121221
1234
1234
J1903
M
BOUT2
BOUT1
AOUT2
AOUT1
J2003
M20
CL
CL20
J2021DH
21J2024
12
J2021L
123456
J1902
J2021D J2023J2022
SW21SW20
OPF_CL
+24VF
SGND
SGND
CST_SW
DOOR_SW
982345617
J1908
OPSTS
+3.3VB
+24VA
OPCMD
OPCLK
OPTMG
PGND
7
6
5
4
3
2
1
1234567
J1907
7
J21L
J21LA
7
J20L J20LA
1
3
2
7
6
5
4
OPTMG
OPCLK
OPCMD
OPSTS
+24VA
+3.3VB
PGND
12345678
J1901
123123
1231234
1234123
J2041L J2042L
J2041DH J2042DH
J2042DJ2041D
PATH_S
+3.3V_PA
SGND
+3.3V_PATH
SGND
PA_S
J2046
J2044
SR21SR20
+3.3V_PA
+3.3V_PATH
SGND
PA_S
SGND
PATH_S
1234567
J1904
Paper feeder controller PCA
ENWW Tools for troubleshooting 179