Agilent Technologies 1670G Series Service Manual page 171

To remove and replace the CPU board
Using previous procedures, remove the following assemblies:
1
•
Handle
•
Rear Feet
•
Cover
•
Disk Drive Assembly
•
Acquisition Board
Disconnect the following cables from the CPU board:
2
When reconnecting the cables, the ribbon cable from the CPU Board to the Acquisition Board
C A U T I O N
must not be connected to J12. This cable goes from the CPU Board to J13 (at the edge of the
Acquisition Board). If the cable is connected to J12 on the Acquisition Board equipment
damage will occur.
•
Rear Panel (J5)
•
LCD Data (J4)
Removing the LCD data cable from the CPU board
•
LCD Inverter (J3)
•
GPIB (J13)
•
RS-232 (J8)
•
Front Panel (J7)
Slide the board out the side of the instrument.
3
Reverse this procedure to install the CPU board.
4
When connecting the LCD data cable to the CPU board, ensure the blue side of the
cable faces away from the SIMM memory.
When reconnecting the cables, the ribbon cable from the CPU Board to the Acquisition
C A U T I O N
Board must not be connected to J12. This cable goes from the CPU Board to J13 (at the edge
of the Acquisition Board). If the cable is connected to J12 on the Acquisition Board
equipment damage will occur.
Check that the following assemblies are properly installed before installing the CPU board:
Replacing Assemblies
To remove and replace the CPU board
6–9