Agilent Technologies 83437A, User Manual, Page: 82 / 106

5-28
Servicing
Replacing Instrument Assemblies
To replace the A2 Source assembly
The A2 assembly, which includes A2A1, A2A2, A2A3, A2MP1, and A2MP2,
must be replaced as a complete unit. Individual components cannot be
repaired.
W A R N I N G To avoid exposure to the laser path of a CLASS IIIb LASER
PRODUCT, do not open the A2A1 assembly. There are no
serviceable components inside. Do not damage the fiber-optic
cable that connects the CLASS IIIb pump laser, A2A3, to the
A2A1 assembly. Other laser paths outside of the A2A1
assembly do not require precautions to maintain safety.
1 Remove the instrument’s top, bottom, and right-side covers.
2 Remove all cables attached to the A2A2 Laser Modulation Board Assembly.
3 Remove the trim strip located on the top of the front frame.
4 Use a T-10 TORX driver to remove the six screws that secure the front panel
to the front frame. They are located along the top and bottom of the front
frame.
5 Gently move the front panel out to gain access to the back side of the front-
panel
OPTICAL OUT
connector. Unscrew the fiber-optic cable from the connector.
You may need to cut the cable tie that secures the line switch cable.