Tektronix DC 5010 Anleitung Seite 286

not get twisted. The GPlB board is attached to the Kernel
Test board as shown in Fig. 5-10. Connect the START,
STOP, CLOCK, and GROUND connections of the analyzer
to the test points as indicated on the appropriate Kernel
Signature (Fig. 8-1 0 and Fig. 8-1 1) in the pullout pages. Also
make sure that the START, STOP, and CLOCK polarities
have been properly selected on the analyzer.
In troubleshooting the kernel, the following information
may be helpful.
Microprocessor kernel problems in the DC 5010 can be
isolated to either the GPlB board (A14) or the Digital board
(A1
6).
This may be accomplished by first removing the GPlB
board from the instrument. Then, insert the microprocessor
S-,
(see the Electrical Parts list for U1510) in the U1510 IC
socket on the Digital board. If the problem remains, check
the Digital board. Troubleshoot the Digital board with the
Kernel Test board and signature analyzer, as shown in Fig.
8-10. If the instrument operates properly, the problem is
most likely on the GPlB board. Troubleshoot the GPlB
board for kernel problems using the previously described
kernel test and referring to Fig. 8-1 1.
The Kernel Test Service Kit may also be used to extend
the GPlB board from the Digital board to troubleshoot com-
ponents on the Digital board. This may be done by using
just the cables and square pin adapters provided in the kit.
P I 21 1 (on GPlB board)
J 100 1 (on Kernel test board)
StartlSto~
DIGITAL BOARD
(rear view)
Fig. 5- 10. Kernel signature analysis connections.
5-1 2