Filter
Top Products
Corrective Maintenance
CSA 803C Service Manual
6Ć69
Firmware Integrated Circuits (Dual InĆLine Package" ICs)
The firmware ICs are located on four separate boards (see Figure 6Ć30 for
the IC locations on each circuit board). The boards and their respective
firmware (FW) are:
H A5 Time Base/Controller board Ċ Time Base Processor FW (U300,
U310, U400 and U410)
H A15 MMU board Ċ Display Processor FW (U140 and U150)
H A18 Memory board Ċ Main Processor FW (U800, U810, U820, U830,
U900, U910, U920 and U930)
H A28 Acquisition MPU board Ċ Acquisition Processor FW (U611)
All of the ICs listed above are ordered by a single Tektronix part number, as
a single firmware kit. (Each IC cannot be ordered separately.) For the
CSA 803A, the firmware kit number is 020Ć1717ĆXX.
To remove and replace the firmware ICs in your CSA 803C, follow these
procedures:
WARNING
Dangerous shock hazards may be exposed when the instrument
covers are removed. Before proceeding, ensure that the CSA 803C
PRINCIPAL POWER SWITCH is in the OFF position. Then, disconĆ
nect the instrument from the power source. Disassembly should
only be attempted by qualified service personnel.
CAUTION
To prevent static damage to the instrument, observe all the special
precautions mentioned under StaticĆSensitive Classification in this
section.
Firmware Upgrade Procedure
To upgrade or replace your firmware ICs, complete the following steps:
ăStep 1:ăPrepare the instrument for the firmware upgrade procedure as
follows:
H Set the PRINCIPAL POWER SWITCH to OFF, and remove the power
cord.