Ambient Temperature Error (T) Flow Chart - Thermo Scientific PARTISOL 2000 Service Manual

AMBIENT TEMPERATURE ERROR TROUBLESHOOTING FLOW CHART
Error code
"T"
Replace cable
R&P P/N 51-005633
This error code occurs if
the ambient temperature
is out of range.
Continuity OK?
The temperature must be
between -40°C and 60°C
Check continuity of cable
to be valid.
between P54 and ambient
temperature sensor back
panel connector (P52) (see
note 2).
Ensure ambient temperature
probe is properly attached to
the back of the instrument.
Voltage =
~ +15V?
Place multimeter across
Go to the statistics screen
test point +15V (red) and
and observe the ambient
AGND (black) on interface
temperature reading.
board.
Place multimeter across test
points AMBTEMP (blue) and Voltage
AGND (black) on interface nominal?
board (see note 1).
No
Check continuity of
cable between P4
Yes
(interface board) and
P54 (see note 3).
Yes
Replace interface/CPU
board assembly
No
R&P P/N 50-005496
& 10-002407
No
Replace interface/CPU
board assembly
Yes
R&P P/N 50-005496
& 10-002407
Note:
1. The voltage at this test point is related to the
temperature according to the following
equation:
1°K = 10mVDC (nominal)
Replace cable
2. Pins for continuity check of cable P54 to P52:
R&P P/N 51-006183
P54
Pin 1
No Pin 2
-----
3. Pins for continuity check of cable P54 to P4:
P54
Continuity OK?
Pin 1
Pin 2
Yes
Replace ambient
temperature sensor cable
R&P P/N 51-004352-0001
P52
Pin 1
Pin 2
Pin 3
P4
Pin 1
Pin 2