Printed Circuit Boards; Figure 4-12. Electronics Assembly - Exploded View - Emerson Heated Flame Ionization Detector Module Model NGA 2000 HFID Instruction Manual

Model NGA 2000 HFID
Preamp Assembly
656945
Case Pressure Purge
Switch 903690
Computer Analysis Board
659149
Sensor Board
657060
a.

Printed Circuit Boards

When replacing a circuit board, the fol-
lowing procedure is recommended:
Per Section 4-6, remove securing hard-
ware from electronics assembly and lay
on bench.
Rosemount Analytical Inc. A Division of Emerson Process Management
Safety Board
657499
Case Temperature Sensor
656026
Figure 4-12. Electronics Assembly – Exploded View
Instruction Manual
Remove securing hardware from printed
circuit board to be replaced, do not dis-
connect cable(s).
One at a time, remove the wiring con-
nectors and attach to replacement board.
Mount replacement board to electronics
assembly.
Maintenance and Service
760004-A
February 2002
Power Supply Board
655764
4-15