15
Figure 3-7. — Location of wire harness Red/Yellow wire
and Blue wire in P1 Optical Control Display
wire harness plug and Power Board P1
and P2 Connectors.
Blue
P2
Power board connector
P1
Power board connector
Red/Yellow
To check Red/Yellow wire and Blue wire for continuity:
1. Disconnect P1 and P2 from Power Board.
2. Disconnect Optical Control Assembly P1
from circuit board.
3. Jump Red/Yellow wire and Blue wire at
Power Board P1 and P2 connector.
4. Connect ohm meter to Red/Yellow wire and
Blue wire contacts at Optical Control Display
wire harness connector.
Jumper into P1-9 and P2-3
100 B
ANS
I
Z21. 2
JW
5
P3
R
T424F12
12V
05-43
07
3
D5
R50
R49
07
3
07
3
07
3
4
C
Q3
4
C
D8
CPC - E
94 V - 0
P4
GN
D
12VDC
Potter & Brumfield
T7CS1D2-05
5VDC
0544
700514
5A@120VAC
CHINA
D3
c
4
D6
3
07
R2
8
R
3
D1
3
07
3
R39
D1
N
M
07
3
1237
0301
9
8
4
5
3
K3
R25
R27
R26
R29
C8
7
4
R
1
2
Potte
r & Brumfield
T7
7V
1D
10
-0
9
CHIN
A
CHIN
A
10A@120
VA
C
700514
10A@120
VA
C
Potter & Brumf
iel
d
T7
7V
1D
10
-0
9
30VDC
RES.
30VDC
RE
S.
700514
D4
R37
R34
4
6
5
D 12
D
11
Z3
C 1
Potter & Brumfiel
d
T7
7V
1D
10
-0
9
CHINA
10A@120V
AC
30VDC
RE
S.
700514
JW
4
JW
6
D2
R9
R7
R24
R46
R4
R5
R23
R20
R18
R21
R21
JW
7
JW
9
JW
10
JW
8
R36
R41
R45
JW
2
R441
R8
R10
JW
3
R6
R40
R43
R42
R2
R38
R47 R30
R48
R35
R33
U1
LP
1
Q1
Q2
Q6
C9
D10
R11
R12
C7
R16
R15
R17
R19
R13
R22
R32
R31
Z2
D7
R14
U4
C3
C5
U3
U6
JW
11
Z4
AC heater wires
See NOTE
MIN MAX
RANGE
HOLD
Hz
REL
mA
A
mV
V
V
OFF
!
!
A
COM
V
mA
µ
A
1000V MAX
400mA MAX
FUSED
10A MAX
FUSED
PEAK MIN MAX
µ
A
CAT II
4 1/2 DIGITS
1 Seconds
TRUE RMS MULTIMETER
V
V
Figure 3-8. — Measuring DC voltage across the Red/Yellow (+) and Black (–) wire.
10.5 to 15.4 VDC
Black
Red/Yellow
+
12 VDC
in
–
12 VDC
in
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