Agilent Technologies 8510C Service Manual page 20

Service and Equipment
Overview
Overview
This On-Site Service Manual is a complete guide to test, repair, adjustment and installation of the 8510C
network analyzer. It was written for qualified service personnel. Previous knowledge of a network analyzer
system is assumed, but specific knowledge of the 8510 system is not required.
This manual addresses troubleshooting to the faulty board or assembly, not to the component level. When
the faulty board or assembly has been isolated, contact Agilent and order the new part (refer to
Agilent" on page iii). In some cases, an exchange assembly is available, which costs less than a new part.
Due to the assembly level repair strategy, schematics and individual component lists are not included in this
documentation.
NOTE
The original 85101C display/processor incorporated a cathode ray tube (CRT). The
current design incorporates a liquid crystal display (LCD). In this manual, references
to either CRT or LCD apply to both display designs unless otherwise noted.
Some troubleshooting procedures, schematics, replaceable parts, and removal procedures may differ
depending on the display installed. In such instances, display information
(CRT or LCD) is documented separately. Some of the main differences are:
85101C Equipped with a CRT
A4 GSP display board positioned vertically in card cage
slot
A11 CRT display
W1 cable and connections to boards
Rear-panel multi-pin connector uses D1191A video
cable (supplied) for external video connections
(requires special video monitor)
NOTE In this manual, GPIB and HP-IB refer to the same protocol.
GPIB allows either the system display/processor or an external controller to operate
the various instruments of the system. The GPIB interface operates according to IEEE
488–1978 and IEC 625 standards and IEEE 728–1982 recommended practices.
1-2
85101C Equipped with an LCD
A14 GSP display board positioned horizontally on chassis
directly behind A15 LCD assembly
A15 LCD assembly (includes the A16 inverter board and
backlight)
W4, W5, W6, W7, and W8 cables and connections to
boards
Rear-panel multi-pin connector designed to work with
external VGA compatible monitors (standard 15 pin VGA
monitor cable not supplied)
8510C On-Site Service Manual
"Contacting