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Model 300E Carbon Monoxide Analyzer
Instruction Manual
M300E DOCUMENTATION
P/N 04288 Rev: A
7
11.4.2.
Excessive Noise........................................................................................................... 205
11.5. S
UBSYSTEM
C
HECKOUT
.......................................................................................................... 206
11.5.1.
AC Mains Configuration................................................................................................ 206
11.5.2.
DC Power Supply......................................................................................................... 207
11.5.3.
I
2
C Bus......................................................................................................................... 208
11.5.4.
Keyboard/Display Interface .......................................................................................... 208
11.5.5.
Relay Board ................................................................................................................. 208
11.5.6.
Sensor Assembly ......................................................................................................... 209
11.5.7.
Motherboard................................................................................................................. 212
11.5.8.
CPU ............................................................................................................................. 214
11.5.9.
RS-232 Communications.............................................................................................. 215
11.6. R
EPAIR
P
ROCEDURES
............................................................................................................. 216
11.6.1.
Repairing Sample Flow Control Assembly.................................................................... 217
11.6.2.
Removing/Replacing the GFC Wheel........................................................................... 218
11.6.3.
Disk-On-Chip Replacement Procedure......................................................................... 221