Roland HP 2700 Service Notes page 28

HP-3700/2700
TEST
MODE
This test
mode
is
used both for testing the
main board by
itself
(using the main board testing device)
and
also for
testing the entire unit after
assembly.
i<
Overview
of test
mode
To
enter test
mode, set the
TEST/
NORM
switch on the
main board to TEST, and turn the
power
on.
When
test
mode
is first
entered, the "All
LED
all
switch"
mode
will
be
selected (explained later).
To
exit,
press
DEMO
button on the panel.
In
test items other than "All
LED
all
switch", the
DEMO
LED
will
always be
lit,
indicating that
you are
in test
mode. The LEDs
for
CHORUS, TREMOLO, ROOM, STAGE,
HALL,
UP,
and
DOWN
will
always indicate the test item
number.
To directly select test items,
you
can press these
CHORUS, TREMOLO, ROOM, STAGE, HALL, UP, and
DOWN
switches.
To move
to the next test item, press
DEMO.
To
return to
the
"All
LED
all
switch"
test,
press
TRANSPOSE.
Except while outputting a sine wave or square wave, you
can play the keyboard at any time while
in
test mode.
mm
MAIN-K- K±® TEST/NORM
X-r
-y
f-^TESTffll)IC
LT®
•rX
h •
^r-
K-eti.
tt
LED
^
SWJ
(^j®)
LS-fo
^-'°T'.'1^±®DEM0^;5'
LED
±
SWJ Jil^®rX
DEMO
LEDli-^ir^i^jiL.
rX
h
•
L i L
t-to
CHORUS. TREMOLO. ROOM. STAGE. HALL. UP.
DOWN®#LED(i. xX
hJSg®H^'£-Si-^^Lri-'S-ro
C Jib® CHORUS.
TREMOLO. ROOM.
STAGE. HALL.
UP.
DOWN®^SW^-}f^Cil::J;o'r.
xX
DEMO^fffi^):®xX
t'^gfcitAS-fo
TRANSPOSE LED
^
SWJ ®t*cSglcM^ S fo
iJ-T >ig^.
xX
h •
Kif
TrUH
List of test
items
:horus.
tremolo, room,
stage, hall, up,
down CHORUS, TREMOLO, ROOM,
I
^
r^l
*
'
r
0
(when power
is
turned All
LED
all
switch
1
O • • • • • • Low
level sine
wave
2
• o
• • • • •
MIDI IN/ OUT, MIDI
sense, pedal sense
3
• • o • • • •
Soft pedal
4
• • • o • • •
Sostenuto pedal
5
• • • • o # •
Damper
pedal
6
o •
• • • o •
Volume
7
• o • • • o •
Brilliance
8
• • o • • o #
TUNE VR
9
• • • o • o •
Direct sound
10
• • • • o o •
Resonance sound
11
o • • • • • o
Battery
12
• o
• • • • o
Sine wave
13
• • o • • • o
Square
wave
hilg-M
CHORUS, TREMOLO, ROOM, STAGE, HALL,
UP,
DOWN
"1
r"i
M
'
/
'
'
—
0 VP#)
±
LED
^
SW
1
o • • • • • •
U'<JU0iS:(,
2
• o • • • • •
MIDI IN/
OUT,
MIDI
sense, pedal sense
3
• • o • • • •
7 7
4
• • • o •
• • VXxX-
5
• • • • o • •
6
o • • • • o •
A'lJ
i-A
7
• o • • • o •
y'j
')yyx
8
• • o • • o •
TUNE VR
9
• • • o • o •
y-T
10
• • • • o o •
Vl/d-VXg-
11
o •
• • • • o %%
12
• o • • • • o
-tJ-'f
V®
13
• • o • • • o
O
: lit
•
:
unlit
O
:
-^iT
•
:
/likT
Dec.
1990
Expianation of test
items
0)
All
LED
all
switch
Check
that all
LEDs are
lit.
Press each switch (except
DEMO), and check that the corresponding
LED
is
turned
on /off.
To
exit this
condition, press
DEMO.
1)
Low
level sine
wave
O# ••• ••
A
low
level
sine
wave
(1
cycle 9.2 mS,
26 mVpp)
will
be output to
OUTPUT
L and
OUTPUT
R.
Use
this signal
to adjust the
MSB
of the
D/A
on
the
jack
circuit
board.
(For the
adjustment
procedure, refer to
page 30
of
"Adjustment".)
To advance
to the next test item, press
DEMO.
2)
MIDI IN/OUT, MIDI IN sense, pedal
sense
•o ••• ••
Connect a MIDI connector to MIDI IN,
and check
that
PIANO 2
lights.
Use
a
MIDI cable to connect MIDI IN and OUT, and check
that
PIANO
1
lights.
Connect
the pedal connector,
and
check
that
HONKY TONK
lights.
LED
Meaning
when
lit
PIANO
1
PIANO 2
HONKY TONK
MIDI IN/
OUT
is
normal
a
connector
is
connected
to
MIDI
IN
a pedal
connector
is
connected
To advance
to the next test Item, press
DEMO.
3)
Soft pedal
•• O## ••
The
soft pedal value read by the
CPU
will
be indicated
by the LEDs. *
1
Check that the displayed value changes smoothly from
the
minimum
to the
maximum,
according to
how
you
depress
the soft pedal.
Check that the display does not change when you
press
a pedal other than the soft pedal.
To
advance to the next
test item,
press DEMO.
4)
Sostenuto
pedal
## #0# ##
The sostenuto pedal value
read
by the
CPU
will be
indicated by the LEDs.
*
1
Check
that the displayed value
changes smoothly from
the minimum
to the
maximum,
according to
how you
depress the sostenuto
pedal.
Check
that the display does not change
when
you press
a pedal other
than the sostenuto
pedal.
To
advance to the next
test item,
press DEMO.
5)
Damper
pedal
## ##0 ##
The damper
pedal value read by the
CPU
will
be
indicated
by
the
LEDs. *
1
Check that the displayed value changes smoothly from
the
minimum
to the
maximum,
according
to
how
you
depress the damper
pedal.
Check that the display does not change when you
press
a pedal other than the damper
pedal.
To advance
to the next test item, press
DEMO.
hmmmm.
0)
±
LED
±
SW
t-<X<D LED
;6L'±i'Lr-r -5
L i
^SSig
Itt.
SSW (DEMO^^O
L.
<9
^t>
-S
C i
Lt-to
DEMo^w-rt.
1)
O# ••• ••
U^;U®<SV'-thT 9.2mS, 26mVpp)
A
OUTPUT LSO-'OUTPUT R
C®ffl-^^flJfflLT.
-y
K®D/A®MSB^|liSL
tto
DEMO^-Jtp-Ti. ^^®xX hJSgicitASfo
2) MIDI
IN/OUT,
MIDI IN sense, pedal
sense
•O ••• ••
MIDI piano
MIDI
INiOUT^MIDiy-X;LTrg^L.
PIANO
I
if
L
.
HONKY
TONKAL'S'jrT'r
-S
0 i
MLttc
LED ,#iTP#0,m
PIANO
1
PIANO
2
HONKY TONK
MIDI IN/OUTttlEffi
MIDI
y
jL
3 ^ $
nr
t
'
DEMO^fl1-i.
i^®xX
7 7
L
^
CPU
tm^
LED TTg
/K
L
S
-To
*
1
bftAM t ^ c i
Lt-to
7 7
h
l
nii,
^
c i
^
WMLt-iTo
DEMO^-fl-fi. !^I®xX mglCiiAS-To
4)
•• #0# ••
7 X X
7
-
h
^ A
CPU LED
L
tto *
1
-S
C i ^SSIS L S fo
7
xx
7
-
L
luk'
DEMO^ff-Ti.
^®xX
LJ^giciiA^fo
5)
•• ##o #•
y
CPU Z^fz^i^LED it
to
*
1
bftAM t
-5
C i Ltto
^mmLttc
DEMO^flfi.
'(koi^x
hmstzm^ttc
28