Output Problems; Printer Not Generating Report; Trend Output Not Functioning Correctly; Digital Pcb Malfunction - ABB PGC2000 Operation And Service Manual

2. Air supply pressure is low. Verify correct air pressures. If necessary make adjustment.
3. Vortex cooler not adjusted. Perform Test Procedure 41 (Programmed Temperature Oven Cool
Down).
4. Listen for cool down solenoid to operate and introduce increased vortex cooler air flow. If this
does not happen, perform Test Procedure 41 (Programmed Temperature Oven Cool Down).

OUTPUT PROBLEMS

Printer Not Generating Report

Symptom: No reports or other printer response.
Cause: The printer may be turned off or malfunctioning. The printer may have a blown fuse or be
unplugged from power. The printer may be in alarm condition such as being out of paper. Wiring to
printer may be disconnected or in error. Printer and analyzer output driver may be not be compatible
or mismatched (RS-232).
If no reports are generated the report option may be set to NONE. The post analysis calculations
may still be in progress. If no report is generated before next analysis cycle begins, there is a
problem. Perform Test Procedure 35 (Printer Test) to verify correct printer setup.

Trend Output Not Functioning Correctly

Symptom: There is no trend output at recorder or input device, or the trend output value is not
correct.
Cause: No trend output to an external device such as a recorder or DCS can be due to wiring, loss of
loop power or, Trend Board failure. Incorrect trend output at the peripheral device could be due to
loop power, input shunt resistance, Trend Board not scaled correctly, Trend Board malfunction, or
incorrect trend table. Perform Test Procedure 37 (Trend Output) to test trend function.

Digital PCB Malfunction

Symptom: Valves do not switch and alarm digital output not functioning.
Cause: Wrong assignment of valve or alarm digital assignment in method or Vista BASIC Program.
Digital PCB malfunction or defect.
Verify digital assignment (see "DIGITAL I/O OPTION" in Section 4).

No Recorder Output

Symptom: Strip chart recorder does not record chromatogram.
Cause: The strip chart recorder may not be powered, or may be malfunctioning. A fuse may be
blown at the recorder. Other causes include defective recorder cable, wiring error or loose
connection. Possibly the wrong attenuation is selected at the recorder or the shunt resistor is not
correct. The Manual Control Screen may not have the Chroma selection or the Chroma I/O board
could be malfunctioning.
The problem may be due to defective or damaged analyzer terminal connection, defective wiring or
connection to the front jacks or backplane connector, or to defective electronics.
6-22 2000-OSM, F1