Table of Contents
Advertisement
Front Panel Problems
If the analyzer appears to power-up normally but will not respond to keystrokes, verify that
none of the keys are stuck. If the front panel keys are still not responding properly, remove
the front panel and make sure the ribbon cable is properly connected between the front panel
assembly and the CPU.
Inspect the keypad and the PC board. Replace if either assembly is defective. he RPG knob
assembly can be replaced separately. Inspect the ribbon cable closely and verify that it is in
good condition. ry removing the ribbon cable clamp located on the CPU board to verify this is
not causing a short.
If an inspection of the front panel assembly reveals no obvious defects, replace the CPU board.
Other Power-Up Problems
A power-up sequence problem can also be caused by a problem with the SRAM. hese
problems can have many symptoms, since the symptom will depend on where the analyzer was
in its power-up sequence when the bad data was encountered. ry clearing the SRAM (see
previous section for instructions). If the problem persists, the DRAM is probably bad and/or the
CPU board needs to be replaced.
T roubleshoot ng and Block D agrams
4-15
Advertisement
Table of Contents
