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F-110 F-110
FIGURE F.38 – SERIAL LOOP WIRING DIAGRAM
40mA current supply
J22
J26
J26
J27
J27
J28
J28
J22
5
3
4
1
4
1
4
4
(263)
(264)
(111A)
(112A)
(117A)
(118A)
(5R)
(5W)
5
J44
40mA
current path
4
J44
POWER BOARD
Serial Loop
Master
Transmit &
Receive Lines
TxD
RxD
Display Board
Port Switch
Open: DK Board S.L.
Comunication
enabled
Closed: DK Board S.L.
Comunication
disabled
WF1
Port Switch
Open: WF1 S.L.
Comunication
enabled
Closed: WF1 S.L.
Comunication
disabled
WF2
Port Switch
Open: WF2 S.L.
Comunication
enabled
Closed: WF2 S.L.
Comunication
disabled
DK+
DK-
WF+
WF-
OPT+
OPT-
TRN
REC
6
3
J14
J14
DISPLAY BOARD
CONTROL BOARD
TRN
REC
TRN
REC
WF1
WF2
L
M
L
M
H
G
H
G
8-pin
8-pin
14-pin
WF1
14-pin
WF2
POWER BOARD
P82
P83
P83
P82
82(+)
82(+)
81(-)
81(-)
TROUBLESHOOTING & REPAIR
POWER WAVE 450
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