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TC Electronic A/S
Finalizer Service manual
page 14
Power On Sequence, continued:
No Event
Trouble shooting
7a TP16, DA_DATA starts up
IC23
7b TP17, AD_DATA starts up
IC18
7c TP26 goes to -3V
LD5, IC12 + soldering
7d TP27 goes to +3V
LD4, IC12 + soldering
8
TP6, Reset signal goes high.
Battery connections, IC30
9
MPU, IC29 checks Checksum in Flash
If OK LD1, LD2, LD3 blink once. If not OK, the LED's stays on. Reload Boot Sector or
replace the Flash, IC35 .
10 MPU checks if TAP button is pressed
If pressed; Boot menu appears. Check D11 if no picture.
11 MPU tests SRAM
If not OK; message appears: "RAM is corrupted, Settings cleared" . Check IC34, IC30 or
battery.
12 MPU checks header in application software.
If not OK; Boot menu appears. Reload application software
13 MPU checks if any BYPASS button is pressed
If pressed; Reset menu appears.
14 MPU tests Preset information in SRAM
If not OK; message appears: "Preset Error". Check IC34, IC30 or battery.
15 MPU, IC29 pin 107 goes high, (DSP RESET*)
IC29 + soldering, see sequence picture in schematics for main board
16a MPU tests DSP
If not OK; message appears: "DSP not OK"
16b TP11, ASIC clock starts up, 80MHz
IC10 + soldering
17 Picture with user information and software version appears on the display.
Front connection, display,
18 RECALL picture appears on the display.
Application software,
