Power-Up Self-Check Errors; Power-Up Sequence - Motorola ASTRO Digital Saber Service Manual

Power-Up
Self-Check
Errors

Power-Up Sequence

Each time the radio is turned on the MCU and DSP perform some
internal diagnostics. These diagnostics consist of checking the
programmable devices such as the FLASH ROMs, internal and external
EEPROMs, SRAM devices, and ADSIC configuration bus checksum. At
the end of the power-up self-check routines, if an error exists, the
appropriate error code is displayed on the display. For non-display
radios, the error codes may be read using the Radio Service Software
(RSS) from the SB9600 bus on the universal connector. The following
lists valid checksums, the related failure, and a reference section for
investigating the cause of the failure.
Error Description
Code
01/81 Chart 6.
01/82 Chart 7.
01/84 Chart 8.
01/88 Chart 9.
01/92 Chart 10. 01/92, Internal EEPROM
02/A0 Chart 11. 02/A0, ADSIC Checksum Faiure . . . . . . . 10-8
02/81 Chart 12. 02/81, DSP ROM Checksum Failure . . . . 10-8
02/88 Chart 13. 02/88, DSP External SRAM Failure U414 . 10-9
02/84 Chart 14. 02/84, DSP External SRAM Failure U403 . 10-9
02/82 Chart 15. 02/82, DSP External SRAM Failure U402 10-10
02/90 Chart 16. 02/90, General DSP Hardware Failure . . 10-10
09/10 Chart 17. 09/10, Secure Hardware Failure . . . . . . . 10-11
09/90 Chart 18. 09/90, Secure Hardware Failure . . . . . . . 10-11
001 Chart 31. VHF/UHF Frequency
001 Chart 32. 800MHz Frequency
002 Chart 7.
In the case of multiple errors, the codes are logically OR'd and the
results displayed. As an example, in the case of an ADSIC checksum
failure and a DSP ROM checksum failure, the resultant code would be
02/A1. Following is a series of troubleshooting flowcharts which relate
to each of these failure codes.
Upon RESET* going active, the MCU begins to execute code which is
pointed to by the vector stored at $FFFE, $FFFF in the FLASH ROM. The
execution of this code is as follows:
1. Initialize the MCU (U204). Green LED on.
2. Initialize the SLIC (U206).
3. CONFIG register check. If the CONFIG register is not correct, the
MCU will repair it and loop.
4. Start ADSIC/DSP:
- Bring the ADSIC reset line high.
- Wait 2ms.
- Bring the DSP reset line high.
01/81 Host ROM Checksum Failure . . . . 10-5
01/82 or 002, External EEPROM
Checksum Failure. . . . . . . . . . . . . . . . . . . 10-6
01/84 SLIC Initialization Failure . . . . . . . 10-6
01/88 MCU (Host µC)
External SRAM Failure . . . . . . . . . . . . . . . 10-7
Checksum Failure. . . . . . . . . . . . . . . . . . . 10-7
Generation Unit (FGU) . . . . . . . . . . . . . 10-19
Generation Unit (FGU) . . . . . . . . . . . . . 10-20
01/82 or 002, External EEPROM
Checksum Failure. . . . . . . . . . . . . . . . . . . 10-6
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