Tascam DM-24 Service Manual page 36

Meaning: Something goes wrong in hardware having efffects on the Effector functions.
Remedy: Check U106 on the MAIN PCB and its peripheral circuits for signs of bad soldering.
Meaning: The voltage of the backup battery drops.
Remedy: Get to the PREFERENCES sub-screen under the OPTION screen, and check if the Battery Check reads OK.
If the message "Can't Save DM-24 System Date" is blinking, replace the battery.
Meaning: Aberrant data is detected in the audio signal in the DSP.
Remedy: Run the SRAM Initialization. If this does not fix the problem, check U6 on the MAIN PCB for signs of poor contact and if neces-
sary replace U6 or further check U71-U93 for signs of bad soldering.
Meaning: An illegal DPS ID was issued when commands were sent from the Main CPU to the DSP.
Remedy: Run the SRAM Initialization. If this does not fix the problem, check U6 on the MAIN PCB for signs of poor contact and if neces-
sary replace U6.
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TASCAM DM-24