September 5, 2008 6881076C25-E
4-4 Troubleshooting Procedures: ASTRO Spectra Procedures
- Set the EMC wake-up line high.
7. Begin power-up self-tests.
8. Begin RAM tests:
- External RAM ($1800-3FFF).
- Internal RAM ($1060-$1300).
- External RAM ($0000-$0DFF).
- Display 01/88 if failure.
The radio will get stuck here if the internal RAM is defective. The radio uses the internal RAM for
stack. The RAM routines use subroutines. Thus, if the internal RAM is defective, the radio will get
lost testing the external RAM.
9. Begin MCU (host μC) ROM checksum test.
- Fail 01/81 if this routine fails.
10. Begin DSP power-up tests. The MCU will try this five times before it fails the DSP test.
- Check for HF2.
- Fail 02/90 if 100ms.
- Program the ADSIC.
- Wait for the DSP power-up message.
- Fail 02/A0 if 300ms.
- Fail 02/A0 if wrong message from the DSP.
- Wait for the DSP status information.
- Fail 02/90 if 100ms.
- Fail 02/88 if DSP RAM (U414) fails.
- Fail 02/84 if DSP RAM U403 fails.
- Fail 02/82 if DSP RAM U402 fails.
- Fail 02/81 if DSP RAM fails.
- Wait for the ADSIC checksum.
- Fail 02/A0 if 100ms.
- Fail 02/A0 if failure.
- Wait for the first part of the DSP version number.
- Fail 02/90 if 100ms.
- Wait for the second part of the DSP version number.
- Fail 02/90 if 100ms.
11. Checksum the codeplug.
- Test internal codeplug checksums.
- Fail 01/92 if failure.
- Test external codeplug checksums.
- Error 01/02 if non-fatal error; fail 01/82 if fatal error.
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