Roland GP-100 Service Notes page 7

15.
RETURN
A/D
Press [NUMBER/VALUE]
to start the test.
15.
RETURN
A/D
[NUMBER/VALUE] t
^
1
1
Monitor the
level
on
[OUTPUT A
L (MONO)/R]
(or
[OUTPUT ^ Xt) L
^
[OUTPUT A L(MONO)/R]
B L(MONO)/R]) under
the following settings
and
verify
v^{i[OUTPUT B L(MONO)/R]) v-V
'7
^
changes
in level
as the display changes from "+4dB"
to
^:^<7)"+4dB7"-10dB"iCjS
1
0dB".
i/uxa-
7°-e54E
Ltto
*The route of input
is
as
follows:
RETURN
1
->
OUTPUT A
(or B)
L(MONO)
RETURN
2 ->
OUTPUT A
(or
B)
R
Test condition:
INPUT
VOLUME: MAX
OUTPUT VOLUME:
MAX
Input signal: 2kHz,
80mVp-p, square
Oscilloscope: 0.
1
ms/DI
V
2 V/DIV
^RETURN V
^ 7
^i}^hXtll
^
I fit
to
RETURN
1
->
OUTPUT
A(or B)
L(MONO)
RETURN
2 ->
OUTPUT
A(or B)
R
INPUT
VOLUME:
MAX
OUTPUT VOLUME:
MAX
Input
signal:
2KHz^E?F^7^
80mVp-p
Oscilloscope:
O.lms/DIV
2
V/DIV
GP-100
16.
ESP Check
Press [NUMBER/VALUE]
to start the
ESP
test.
When
the
test completes successfully, the following
message
is
displayed.
The program
automatically starts the next test.
*lf
an
error
is
encountered,
the following
message
will
appear.
"DRAM
ERROR": Check the soldered
joints
between
the
DRAM
and ESP.
"Pitch
ERROR": Check
the soldered joints
between
the
ESP
and CPU.
17.
Factory Settings Load
Press [WRITE] and the following
message
will
appear.
Press
[WRITE] and
the factory settings
will
be
loaded.
'CAUTION
Loading the factory settings erases
all
the user data.
16.
ESP
Check
[NUMBER/VALUE]
t
lE'^
X'^fUf'XlO X
n
o
^fltto
"DRAM ERROR": DRAM-ESP^hI 5IE L
T
T
$
"Pitch
ERROR": ESP-CPUP^
(D# B9# t
^
HE
t
T T
$
V
1
7.
Factory Load
7
T
^7
h
U
"
•
7°'j
-tr
7
h
•
X-
k
Ltto
[WRITE]^#-rE^O
j: 9
i/Z^Tj^^fltto
SCE[WRITE]^#1- E 7
T
^
-
•
7°'j
-fe
7
h
^
n
-
K
L
tto
7
7
^
h
V
"
•
7°V
-fe
7
h
n- Vt^
ts
-(Dtu Xy
ALfz
X~
k {iM
tXLti^tto
7