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7.3
iQube2 PCB Board Assembly Replacement
1. Remove junction box from the scale carriage; see
2. Disconnect load cell and coiled cable connectors.
3. Loosen four screws to remove front cover of junction box.
4. Disconnect JST connectors for load cells and coiled cable.
5. Remove PCB board assembly.
6. Install new PCB board assembly and install screws using blue Loctite
7. Connect coiled cable JST connector to J1.
8. Connect left load cell cable JST connector to J2.
9. Connect right load cell cable JST connector to J3.
10. Replace cover and secure with four screws, Locktite not required.
Coiled cable
J1
connection
XF1
D18
VR5
C29
D19
MH2
C42
R59
TVS3
L1
C66
C69
C70
C68
R56
U14
TVS2
R60
C71
L2
TVS4
R74
R75
PWR
1+
1-
1+
SIG
EXC
GND
J2
RS232_TX
TP14
RICE LAKE
R54
RS232_RX
TP15
ALIVE
TP16
Pb
J1
C52
R18
C43
VR3
R16
U13
U4
C50
C44
F1
MH1
C13
R9
C121
R65
D20
J2
Left load cell
connection
Figure 7-9. PCB Board Assembly
Section 7.0 on page
65.
.
®
USB
S1
R68
J4
TP26
TP25
U15
R67
C77
R66
LED1
R64
U16
U18
C110
C115
U8
-
2+
2-
2+ -
C12
C11
SIG
EXC
U23
J3
X1
U6
LB2
R19
FW1
U29
R15
Vx.xx
L5
LED2
C89
C14
U9
R4
R10
X2
C60
LED3
J3
Right load cell
connection
© Rice Lake Weighing Systems ● All Rights Reserved
iQube2® Junction Box
R109
Q1
C117
D7
R98
MH4
U30
U32
U33
U31
JP3
U22
C119
U25
U19
X3
IC1
R77
D8
C99
U20
MH3
J5
JTAG
C120
69
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Troubleshooting
