Fluke 8842A - Page 139

8842A
Instruction Manual
6-2
6-35. EXTERNAL TRIGGER POLARITY SELECTION (Option -05 Only) 6-36
6-36. TROUBLESHOOTING ......................................................................... 6-36
6-37. Initial Troubleshooting Procedure...................................................... 6-36
6-38. Diagnostic Self-Tests......................................................................... 6-41
6-39. Self-Test Descriptions........................................................................ 6-42
6-40. Digital Controller Troubleshooting.................................................... 6-45
6-41. IN-GUARD MICROCOMPUTER SYSTEM............................... 6-45
6-48. DISPLAY SYSTEM...................................................................... 6-48
6-59. ANALOG CONTROL SIGNALS................................................. 6-51
6-62. DC Scaling Troubleshooting.............................................................. 6-54
6-63. Track/Hold Troubleshooting.............................................................. 6-56
6-64. Ohms Current Source Troubleshooting.............................................. 6-56
6-65. Precision Voltage Reference Troubleshooting................................... 6-58
6-66. A/D Converter Troubleshooting......................................................... 6-59
6-67. Power Supply Troubleshooting.......................................................... 6-61
6-68. IEEE-488 Interface Troubleshooting (Option -05) ............................ 6-64
6-69. SERVICE POSITION.................................................................... 6-64
6-70. DIAGNOSTIC PROGRAM .......................................................... 6-64
6-71. True RMS AC Troubleshooting (Option -09).................................... 6-66
6-72. SERVICE POSITION.................................................................... 6-66
6-73. MAJOR PROBLEMS.................................................................... 6-67
6-74. MORE OBSCURE PROBLEMS .................................................. 6-69
6-75. Guard Crossing Troubleshooting....................................................... 6-70
6-76. INTERNAL CLEANING....................................................................... 6-70
6-77. Cleaning Printed Circuit Assemblies ................................................. 6-70
6-78. Cleaning After Soldering ................................................................... 6-71