Roland A-70, Service Manual

Page: 18 / 27

Checking the output
Mute check
Procedure : Connect an amp to the line output.
Raise the amp and the INT slider volume of the A-70 to maximum.
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Check that when the A-70 power is turned on, there is no pop noise from the amp and the LCD is not
garbled.
(If there is a problem, refer to check 1.)
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Check for the same items when the power is turned off.
Headphone output check
Procedure : Turn off the power, and connect headphones and the VE-GS1 to the A-70.
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Enter test mode, and press numeric key 9 to enter the keyboard test item.
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Press the TRANSPOSE, MONO, and PORTAMENTO switches and check that sound is output from the
headphones as shown in the following table.
(If there is a problem, refer to check 2.)
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Continue with the volume check.
Press the MONO switch, and move the INT slider volume from top to bottom, and check that the sound
does not crackle or break.
(If there is a problem, refer to check 3.)
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Mono
Stereo
Switch operation
TRANSPOSE MONO PORTAMENTO
VOUT
No Output
Vpp=2,5V
VOUT
No Output
Vpp=2,5V
VOUT VOUT VOUT
Vpp=1,25 Vpp=1,5V Vpp=1,25V
`
press
`
press
`
press
18
A-70 Sept, 1997
This completes the audio output check.
Action :
check 1 :
VE-GS1 CONNECT RETRY
PANEL L <=> MAIN CN11 (CABLE)
PANEL L <=> JACK CN103 (CABLE)
MAIN
IC17, IC15, IC16
PANEL L IC2
check 2 :
PANEL L <=> JACK CN103(CABLE)
MAIN
Q3, Q4, Q5, Q6, Q7
MAIN DA5, DA6
PANEL L IC1
check 3 :
PANEL L VR701
SAVING AND LOADING USER DATA
You can send the contents of internal memory to a sequencer or MIDI
device that can record bulk data.
Data that has been recorded in this way can be received via MIDI IN2 at any time
* The contents of the internal memory are overwritten by any data that is received.
This procedure will save the following data to sequencer;
*
Performance and Chain setting in the temporary area
* Manual mode settings
* System settings (except for controller assignments and User Name Maps)
* Controller assignment
* All performances and chains internal memory
* User Name Maps
First of all, you need to set device ID (EDIT:SYS,E01).
1. Change to the Edit mode, and use the menu or the shortcut to select
“Dev ID”
2. Use the CURSOR button to move the cursor to the right, and use DATA ENTRY to set the device ID (the
initial setting is “17”).
If you’re exchanging data between two A-70/EX units, they should both be set to the same device ID
This setting is saved automatically as a system setting.
Next, choose what you want to send and select the MIDI OUT to be used (UTILITY:BLK,U50).
3. Change the Utility mode, and use the menu or the shortcut to select
“Bulk Dump”
↑↑↑↑↑↑
a b c d e f
a Performance and Chain setting in the temporary area
b Manual mode settings
U50
Bulk Dump
TmpP&C T T OFF 000000
E01
Ctrl ch Dev ID
T T
16
T T
17
Switch operation
TRANSPOSE MONO PORTAMENTO
Heard from Heard from Heard from
only the right both sides in only the left
side in the the headphones side in the
headphones headphones
`
press
`
press
`
press
L
R
L
Mono