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2400-902-01 (G - Feb 2006)
Model 2400 Service Manual
4-2
Troubleshooting
Introduction
This section of the manual will assist you in troubleshooting and repairing the Model 2400.
Included are self-tests, test procedures, troubleshooting tables, and circuit descriptions. The
repair technician must select the appropriate tests and documentation needed to troubleshoot
the instrument. Note that disassembly instructions are located in Section 5, while component
layout drawings are at the end of Section 6.
WARNING
The information in this section is intended for qualified service personnel
only. Do not perform these procedures unless you are qualified to do so.
Some of these procedures may expose you to hazardous voltages that
could cause personal injury or death. Use caution when working with haz-
ardous voltages.
Repair considerations
Before making any repairs to the Model 2400, be sure to read the following considerations.
CAUTION
The PC boards are built using surface mount techniques and require spe-
cialized equipment and skills for repair. If you are not equipped and/or
qualified, it is strongly recommended that you send the unit back to the
factory for repairs or limit repairs to the PC board replacement level.
Without proper equipment and training, you could damage a PC board
beyond repair.
•
Repairs will require various degrees of disassembly. However, it is recommended that
the Front Panel Tests be performed prior to any disassembly. The disassembly instruc-
tions for the Model 2400 are contained in Section 5 of this manual.
•
Do not make repairs to surface mount PC boards unless equipped and qualified to do so
(see previous CAUTION).
•
When working inside the unit and replacing parts, be sure to adhere to the handling pre-
cautions and cleaning procedures explained in Section 5.
•
Many CMOS devices are installed in the Model 2400. These static-sensitive devices
require special handling as explained in Section 5.
•
Whenever a circuit board is removed or a component is replaced, the Model 2400 must
be recalibrated. See Section 2 for details on calibrating the unit.
Power-on self-test
During the power-on sequence, the Model 2400 will perform a checksum test on its ROM and
test its RAM. If the RAM tests fails, the instrument will lock up. If the ROM checksum test
fails, the firmware upgrade mode is automatically enabled. See Firmware upgrades at the end
of this section.
Summary of Contents for SourceMeter 2400
Page 10: ......
Page 13: ...1 PerformanceVerification...
Page 28: ...2400 902 01 G Feb 2006 Model 2400 Service Manual 1 16 Performance Verification...
Page 29: ...2 Calibration...
Page 51: ...3 RoutineMaintenance...
Page 54: ...2400 902 01 G Feb 2006 Model 2400 Service Manual 3 4 Routine Maintenance...
Page 55: ...4 Troubleshooting...
Page 68: ...2400 902 01 G Feb 2006 Model 2400 Service Manual 4 14 Troubleshooting...
Page 69: ...5 Disassembly...
Page 76: ...2400 902 01 G Feb 2006 Model 2400 Service Manual 5 8 Disassembly...
Page 77: ...6 ReplaceableParts...
Page 91: ...A Specifications...
Page 111: ...B CommandReference...
Page 123: ...C CalibrationPrograms...
Page 130: ...C 8 Calibration Programs...
Page 134: ......
Page 136: ......