Thermo Scientific PARTISOL 2000 Service Manual page 16

B
Is pump still Perform system
No
running? reset.
Yes
Is
Place hand near (do NOT
electronics
touch!) the heater at the
No
compartment
top of the electronics
temperature compartment.
> 2°C?
Yes
Place multimeter across
test point +24V (red) and
PGND (black) on interface
board.
Check the 4A fuse used
Voltage =~ for the 24.5V@3.6A
No
24V? voltage from
transformer
Yes
Place multimeter across
test point +6V (red) and
Voltage =~ 6V?
PGND (black) on interface
board.
Yes
Perform system
reset.
Resume normal Problem
Yes
corrected?
operation.
DISPLAY TROUBLESHOOTING FLOW CHART-B
Resume normal
operation.
Yes
Problem
Go to A
No
corrected?
Heat coming
No
from heater? terminals and P11 on
the interface board.
Yes
Wait for instrument to
warm up.
Replace fuse
R&P P/N 04-005510-0004
No
Fuse OK?
Check the 5A fuse used
for the 8.3V@5.4A
No Fuse OK?
voltage from
transformer.
Replace fuse
R&P P/N 04-003681
No Contact R&P.
Note:
1. Pins for continuity check of cable P16A to P1:
Check continuity
between the heater
Continuity OK?
Yes
Replace interface/CPU
board assembly
R&P P/N 50-005496
& 10-002407
Yes
Replace interface/CPU board
Yes assembly with known good one
R&P P/N 50-005496 & 10-002407
No
P16A P1 P16A P1
Pin 1 Pin 1 Pin 12 Pin 12
Pin 2 Pin 2 Pin 13 Pin 13
Pin 3 Pin 3 Pin 14 Pin 14
Pin 5 Pin 5 Pin 15 Pin 15
Pin 6 Pin 6 Pin 16 Pin 16
Pin 7 Pin 7 Pin 17 Pin 17
Pin 8 Pin 8 Pin 18 Pin 18
Pin 9 Pin 9 Pin 19 Pin 19
Pin 10 Pin 1 Pin 20 Pin 20
Pin 11 Pin 11
Replace heater
No R&P P/N 56-005909-0120
or 56-005909-0240
Replace transformer
R&P P/N 03-002402
No
Problem
corrected?
Yes
Original boards were
defective.