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4 Service
4.1 Maintenance .......................................................................................................... 4-2
4.2 Calibration ............................................................................................................. 4-4
4.3 Troubleshooting .................................................................................................... 4-7
4.4 CMD Functions ..................................................................................................... 4-9
4.5 Optional Accessory Equipment ........................................................................... 4-10
5 Theory of Operation
5.1 Chassis (Schematic 1003230) ............................................................................... 5-1
5.2 HV (High Voltage) Board (Schematic 1003228) .................................................. 5-2
5.3 Low Voltage Power Supply (Schematic 625703) ................................................. 5-2
5.4 CPU Board (Schematic 625463) ........................................................................... 5-2
5.5 Display Board (Schematic 1003223) .................................................................... 5-3
5.6 Keyboard (Schematic 1003219) ............................................................................ 5-4
5.7 Setpoint Board (Schematic 1003203) ................................................................... 5-4
5.8 Computer Interface (Schematic 1003227) ............................................................ 5-4
List of Figures
2-1 Rear Panel of the DIGITEL .................................................................................. 2-2
2-2 Location of E501 and E502 on the HV Board ...................................................... 2-3
2-3 Location of Setpoint/Bakeout and Computer Interface Options ........................... 2-4
2-4 Location of Setpoint Connector ............................................................................ 2-5
2-5 Installing the Setpoint Option Board .................................................................... 2-6
2-6 Location of Computer Interface Connector .......................................................... 2-7
2-7 Installing the Computer Interface Option Board ................................................... 2-8
2-8 Rear Panel of Bakeout Power Distribution Box ................................................... 2-9
3-1 Rear Panel Controls and Indicators ....................................................................... 3-1
3-2 Front Panel Controls and Indicators ...................................................................... 3-3
3-3 LED Display for CMD Functions ....................................................................... 3-11
3-4 LED Display for Parameter 3 of Setpoint Option ............................................... 3-15
3-5 Front Panel of Bakeout Power Distribution Box ................................................ 3-18
4-1 Location of Maintenance Components ................................................................. 4-2
.4-2 J405 and Safety Interlock ...................................................................................... 4-4
4-3 CPU Board Calibration Components .................................................................... 4-5
4-4 HV Board Calibration Components ...................................................................... 4-6
4-5 Location of Troubleshooting Components ............................................................ 4-9
Table of Contents