Disassembly
5-5
Analog board removal
Perform the following steps to remove the analog board. This procedure assumes that the
case cover is already removed.
1. Remove the small pulse board before removing the analog board.
2. Disconnect the front and rear input terminals.
You must disconnect these input terminal connections for both the front and rear
inputs:
• INPUT/OUTPUT HI and LO
• 4-WIRE SENSE HI and LO
• V,
Ω
, GUARD and GUARD SENSE (rear panel only)
Remove all the connections by pulling the wires off the pin connectors, then
remove the ferrite noise filters from the chassis. During re-assembly, use the fol-
lowing table to identify input terminals:
Input terminals
Front wire color Rear wire color
INPUT/OUTPUT HI
INPUT/OUTPUT LO
4-WIRE SENSE HI
4-WIRE SENSE LO
V,
Ω
, GUARD
GUARD SENSE
Red
Black
Yellow
Gray
-
-
White/Red
White/Black
White/Yellow
White/Gray
White
Blue/White
3. Unplug cables.
• Carefully unplug the ribbon cables at J1027, J1028, and J1029.
• Unplug the ON/OFF cable at J1034.
4. Remove screws.
• Remove two fastening screws that secure the analog board assembly to the
chassis. These screws are located on the side of the board opposite from the
heat sink.
• Remove two screws that secure the heat sink to the chassis.
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: ......