17
Mar. 2008
GT-10
0. Starting the Test Mode
1.
Hold down [OUTPUT SELECT] and [SYSTEM] and switch on the power.
* Continue holding down these buttons until a screen like the one shown below
appears.
fig.1version.eps
2.
Verify that all LEDs light up.
3.
Verify that the color of the LEDs is correct.
fig.ledall-GT-10.eps
4.
Apply impact and verify that the LEDs and LCD screen do not go dark or
disappear.
5.
Verify that all 4 backlight LEDs at the bottom of the LCD screen light up.
Example of defective illumination of the LEDs for the LCD-screen
backlight
fig.lcd-bl-led.eps
1. VERSION
Version Verification
1.
Display
1: VERSION
on the screen.
2.
Press [CATEGORY/ENTER].
The version number (*.** in the figure) and the checksum values (#### in
the figure) appear on the screen.
fig.version-GT10.eps
TOTAL SUM:
The total of the following three items
PROGRAM SUM: The unit’s main program
USER SUM:
User data
BOOT:
The boot program
Unless instructed otherwise, for the checksum, verify the PROGRAM
SUM value.
3.
Press [EXIT].
4.
Press [CATEGORY/ENTER] to go back to the test-item selection screen.
2. DEVICE
Testing of the Peripheral ICs for the CPU and for
the DSP
1.
Use the dial to choose
2: DEVICE
.
2.
Press [CATEGORY/ENTER] to display the screen shown below.
fig.2device2.eps
If
OK
is displayed for all items, execution automatically advances to the
next test.
Descriptions of Errors
PR
Check of DSP (IC3) internal program RAM
An error indicates either an internal defect in the DSP (IC3) or a
defective bus connection with the CPU (IC2).
DT
Check of DSP (IC3) internal data RAM
An error indicates either an internal defect in the DSP (IC3) or a
defective bus connection with the CPU (IC2).
ER
Check of the SDRAM (19) connected to the DSP (IC3)
An error indicates either an internal defect in the SDRAM or a
defective connection between the DSP (IC3) and the SDRAM
(19).
SR
Check of the DSP (13) internal sampling-rate converter
An error indicates either an internal defect in the DSP (IC3) or a
defective bus connection with the CPU (IC2).
IN
Check of DSP (13) -> CPU (IC2) interrupt operation
An error indicates a defective interrupt connection (IC3 pin 101)
from the DSP (13) to the CPU (IC2).
SYS
Check of the user data EEPROM (IC37)
An error indicates either a defect in IC37 or a defective
connection between IC37 and the CPU (IC2).
USB
Check of the USB TUSB (IC11) and USB boot data EEPROM
(IC13)
An error indicates either a defect in the TUSB (IC11) or EEPROM
(IC13), or a defective connection between the TUSB (IC11),
EEPROM (IC13), and CPU (IC2).
3. LCD/ENC
Testing Covering LCD Contrast, Missing LCD Dots,
and Encoder Operation
1.
Use the dial to choose
3: LCD/ENC
.
2.
Press [CATEGORY/ENTER] to display the screen shown below.
fig.3lcdenc2.eps
3.
Verify that turning the dial counterclockwise makes the contrast
progressively fainter.
4.
Verify that turning the dial clockwise makes the contrast progressively
deeper.
Summary of Contents for Boss GT-10
Page 4: ...4 Mar 2008 GT 10 Location of Controls fig panel GT 10 eps...
Page 6: ...6 Mar 2008 GT 10 Exploded View fig bunkai eps L...
Page 7: ...7 Mar 2008 GT 10 fig bunkai eps R...
Page 11: ...11 Mar 2008 GT 10 fig block wiring eps R...
Page 24: ...24 Mar 2008 GT 10 Circuit Board Main Board fig b main 1 eps...
Page 25: ...25 Mar 2008 GT 10 fig b main 2 eps...
Page 26: ...26 Mar 2008 GT 10 Circuit Diagram Main Board 1 5 fig d main 1 eps L...
Page 27: ...27 Mar 2008 GT 10 fig d main 1 eps R...
Page 28: ...28 Mar 2008 GT 10 Circuit Diagram Main Board 2 5 fig d main 2 eps L...
Page 29: ...29 Mar 2008 GT 10 fig d main 2 eps R...
Page 30: ...30 Mar 2008 GT 10 Circuit Diagram Main Board 3 5 fig d main 3 e eps L...
Page 32: ...32 Mar 2008 GT 10 Circuit Diagram Main Board 4 5 fig d main 4 eps L...
Page 33: ...33 Mar 2008 GT 10 fig d main 4 eps R...
Page 34: ...34 Mar 2008 GT 10 Circuit Diagram Main Board 5 5 fig d main 5 eps L...
Page 35: ...35 Mar 2008 GT 10 fig d main 5 eps R...
Page 36: ...36 Mar 2008 GT 10 Circuit Board SW VR Pedal Bank ENC EXP Board fig b sw 1 eps...
Page 37: ...37 Mar 2008 GT 10 fig b sw 2 eps...
Page 38: ...38 Mar 2008 GT 10 Circuit Diagram SW VR Board fig d sw vr eps L...
Page 39: ...39 Mar 2008 GT 10 fig d sw vr eps R...
Page 40: ...40 Mar 2008 GT 10 Circuit Diagram Pedal Board fig d pedal eps L...
Page 41: ...41 Mar 2008 GT 10 fig d pedal eps R...
Page 44: ...MEMO Mar 2008 GT 10...
