4
4. Cannot connect to GC................................................................................................. 57
5. No ready status after automatic start........................................................................... 58
6. Pirani gauge, IC value too high, IG does not light ....................................................... 62
7. Loud noise...................................................................................................................63
8. No peaks obtained (peaks extremely small)................................................................ 64
9. Ion-source temperature does not rise or rises too high ...............................................67
10. Error displayed after filament turns on.......................................................................69
4. DETAILS OF ELECTRICAL CIRCUITS ................................................................................. 70
1. Wiring diagram (Overall) ............................................................................................. 71
2. Wiring diagram (MAIN POWER ASSY).......................................................................72
3.Wiring diagram (Details)............................................................................................... 73
4. MAIN POWER ASSY ..................................................................................................74
5. DC POWER-A............................................................................................................. 77
6. PCB ASSY, MAIN CTRL-A .......................................................................................... 80
7. IS CTRL-A ASSY.........................................................................................................86
8. HV PCB ASSY ............................................................................................................ 91
9. PCB ASSY, IG CTRL-A ............................................................................................... 95
10. PCB ASSY, CPU-A....................................................................................................99
11. RF PS ASSY ........................................................................................................... 102
12. PCB ASSY,DI CTRL-A ............................................................................................ 107
13. RELAY BOX-A......................................................................................................... 110
5. APPENDICES ....................................................................................................................... 112
1. Precautions during maintenance work ...................................................................... 113
2. Adjustment in the high mass-number range.............................................................. 114
3. Detailed explanation of CI and NCI ........................................................................... 107
4.Shimadzu Gas Chromatograph Mass Spectrometer .................................................. 111
5.Installation Completion Checksheet ........................................................................... 114
6. How to change Turbopump ....................................................................................... 118
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