Specifications

748414-A
August 1999
42
Heated Flame Ionization Detector Analyzer Module
Rosemount Analytical NGA 2000
4
MAINTENANCE AND TROUBLESHOOTING
F
IGURE
4-12. E
LECTRONICS
A
SSEMBLY
– E
XPLODED
V
IEW
4.2.5.1 P
RINTED
C
IRCUIT
B
OARDS
When replacing a circuit board, the following procedure is recommended:
1. Per Section 4.2.5, remove securing hardware from electronics assembly and lay on
bench.
2. Remove securing hardware from printed circuit board to be replaced, do not
disconnect cable(s).
3. One at a time, remove the wiring connectors and attach to replacement board.
4. Mount replacement board to electronics assembly.
Safety Board
657499
Sensor Board
657060
Computer Analysis Board
659149
Preamp Assembly
656945
Case Pressure Purge
Switch 903690
Power Supply Board
655764
Case Temperature Sensor
656026