Loop-Back Self-Test; Replacement Parts - Rice Lake SURVIVOR IQ F Series Installation Manual

5.3

Loop-Back Self-Test

The F-Series remote displays provide a loop-back
self-test for use in diagnosing serial communications
errors. When enabled, the loop-back self-test runs as
part of the power-on self-test, checking the function of
the remote display serial port by sending and
receiving data to itself.
To perform the loop-back self-test, do the following:
1. Disconnect power to the remote display.
2. Open the remote display enclosure cover and
the flip digit mounting panel to access the
serial communications terminal block.
3. Disconnect any indicator wiring.
4. Connect jumpers to the terminal block as
shown in Figure 5-3. Wire the terminal block
only for the type of communications you are
using (RS-232 or 20 mA), not both.
Serial Communications Terminal Block
20 mA Current Loop
Figure 5-3. Terminal Block Connections for Loop-Back
Self-Test
5. Set DIP switch DSW3-7 on to enable the
loop-back self-test.
6. Return the flip digit mounting panel to
operating position, close the cover, and set the
remote display upright.
7. Connect power to the remote display. The
loop-back self-test runs as part of the
power-on self-test:
• If all portions of the power-on self-test
are good, the message
• If the loop-back self-test fails, the
message
FAIL S
one or more other messages. If the
loop-back self-test fails but all other
tests are good, the display will show the
message
FAIL S
If the loop-back self-test fails, the serial port is not
functional. Be sure to check the following when
troubleshooting the serial port:
14 F-Series Remote Displays Installation Manual
RS-232
PASS is shown.
is shown, followed by
, then .
PASS
• For 20 mA communications, ensure that 20
mA chips are installed correctly and the
jumper at JMP1 is on. See Figure 2-1 on page
2 for component locations.
• For RS-232 communications, ensure that
jumper JMP1 is off.
• Check continuity of wires between connector
J 3 o n t h e C P U b o a r d a n d t h e s e r i a l
communications terminal block.
5.4

Replacement Parts

Table 5-2 lists selected replacement parts for the
F-Series remote displays. Part numbers for F-Series
optional features are listed in Section 1.0.
Some early production units use CPU board
NOTE:
PN 41033. These boards are compatible with and, if
necessary, should be replaced with the listed CPU
board, PN 44303.
Description
CPU board
EPROM
Power supply board
Power cord assembly (115 VAC)
Learn mode switch assembly
Learn mode switch cover
Breather vent
Display board assembly
(digits and annunciators)
Digit (4") assembly (single digit)
Annunciators/decimal point board
Digit (6") assembly (single digit)
Annunciator board
(single annunciator)
Decimal point board
Cover gasket
Cover sealing washers
Overlay
Table 5-2. Selected Replacement Parts
Model PN
All 44303
All 43619
All 43373
F15/F40 15436
F60 44006
F15 44310
F40/F60 42646
All 15895
F40/F60 42865
F15 42370
F40 21087
F40 41238
F60 21088
F60 44004
F60 41327
F40 45258
F60 45448
F40/F60 44676
F15 42935
F40 40878
F60 41361