Teledyne 300E - Page 7

Model 300E Carbon Monoxide Analyzer
Instruction Manual
M300E DOCUMENTATION
P/N 04288 Rev: A 7
11.4.2. Excessive Noise........................................................................................................... 205
11.5. SUBSYSTEM CHECKOUT .......................................................................................................... 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. REPAIR PROCEDURES............................................................................................................. 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