P
AGE
42
(Continued from page 43)
4. Check the output(s) operation by performing Test 6 as
described in the Test section (page 38). If the
output(s) function(s) in the Test mode, re-examine the
Program, Alarm Set and Preset mode parameter
settings (pages 26 & 30 or Software Ref. Sheet, page
55, if already filled out).
5. If the output appears not to turn off, remove the power
to the instrument. Open the cover and loosen the
platen hold down screw. Swing the platen open. Clip
the resistor located on the Relay Board adjacent to the
output(s) that seem to stay on (See Appendix A-2A or
A-2B, page 47 or 48). A .01 microfarrad, 1 KV
capacitor should be connected from the terminal listed
below, for the output where the resistor indicated was
removed, to the AC ground.
SPST
Relay A
R1
TB6
Terminal 1
Relay B
R2
TB6
Terminal 3
Relay C
R3
TB7
Terminal 1
Relay D
R4
TB7
Terminal 3
Relay E
R5
TB8
Terminal 1
Relay F
R6
TB8
Terminal 3
SPDT
Relay A
R1
TB6
Terminal 1
Relay A
R2
TB6
Terminal 3
Relay B
R3
TB7
Terminal 1
Relay B
R4
TB7
Terminal 3
Relay C
R5
TB8
Terminal 1
Relay D
R6
TB8
Terminal 3
Close the platen and tighten the hold down screw. Close
the cover and turn the power on to the instrument. Check
the operation of the output(s).
mADC Output(s)
1. Verify that the Program mode parameters are correctly
Malfunction
set (page 26).
2. Turn off the power to the instrument. Wait about 5
seconds and turn the power on again. Confirm that
the model number displayed during the power up
sequence indicates that the output(s) is/are present in
the instrument. See Appendix C (page 52) for the
model number explaination/decoding. This number
should match the number on the label affixed to the
platen.
3. Turn off the power to the instrument. Open the cover.
Loosen the platen hold down screw and swing the
platen open. Inspect the instrument Current Output
board (See Figure 2-2, page 9) for the presence of
the output device(s). The output will not work if the
hardware is not present. Inspect that the output
terminal connections are present and firmly attached.
Close the platen and tighten the hold down screw.
Close the cover and turn on the power.
Содержание MRC 7800
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