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4-14
Troubleshooting
Power supply checks
Power supply problems can be checked using Table 4-2. See “Principles of operation” for
circuit theory on the power supply.
Table 4-2
Power supply checks
Step
Item/component
Required condition
Remarks
1
2
3
4
5
6
7
8
9
Line fuse
Line power
TP502
TP503
TP504
TP505
TP507
TP508
TP510
Check continuity.
Plugged into live recepta-
cle, power on.
+150V, ±5%
-150V, ±5%
+38V, ±10%
-38V, ±10%
+15V, ±5%
-15V, ±5%
+5V, ±5%
Remove to check.
Check for correct power-up
sequence.
Referenced to TP501.
Referenced to TP501.
Referenced to TP501.
Referenced to TP501.
+15VF, referenced to
TP500.
-15VF, referenced to TP500.
+5VF, referenced to TP500.
Summary of Contents for SourceMeter 2425
Page 3: ...TAIWAN 1FL 85 Po Ai Street Hsinchu Taiwan R O C 886 3 572 9077 Fax 886 3 572 9031...
Page 15: ......
Page 16: ...1 PerformanceVerification...
Page 35: ...1 20 Performance Verification Model 2425 Service Manual...
Page 36: ...2 Calibration...
Page 62: ...3 RoutineMaintenance...
Page 65: ...3 4 Routine Maintenance Model 2425 Service Manual...
Page 66: ...4 Troubleshooting...
Page 84: ...5 Disassembly...
Page 92: ...6 ReplacementParts...
Page 113: ...6 22 Replacement Parts Model 2425 Service Manual...
Page 114: ...A Specifications...
Page 116: ...B CommandReference...
Page 128: ...C CalibrationPrograms...
Page 139: ......
Page 141: ......