Roland GP-16 - Board Change History Records; Analog Board Change History; GP-16 Sub Board Change History

Jan,
1990
GP-1
B
©Analog
Board
Change
History.
SNo.
ZA933950-ZB17849
ZB17850-up
/RIF#
Change
•Change
PCB
code to
2292082401.
•
Replace
jumpers
mounted
on
the following
designa-
tions
with
capacitors:
fCI,
C5,
C9, Cl
3,
Cl
9,
C24, C29,
C71 on Analog
Boards
\C7 on VR
Board
J
•
pcb 2292082401
•
/Cl, C5,
C9, C13,
C19,
C24, C29,
C71
on
Analog
Board\
\C7
on
VR
Board
J
•
Change PCB
code
to 2292082402.
•
Add
resist
on the solder
side,
•pcb
2292082402(Z^M
Reason
as
For more
effective
protection
against
radiowave
interfer-
ence.
To remove
ground
wire
(see
Fig.
2).
T
-
(Fig.
2#0S)
Fig. 2
View
from
component
side
©GP-16
SUB Board Change
History
©GP-16
SUB BOARD
SNo.
Prior
to
SN
Z**2749/SN Z
**
2749
Jilfty
ZA82750-ZA96249
ZB06250-up/J2l|5f
Change
•
No SUB board.
•
GP-16
SUB BOARD
&
U
Add
SUB
board.
GP-16
SUB BOARD
itin
Obsolate
SUB Board.
Circuits
on SUB
board
are
accommodated
on the
re-laid
out
main
board.
GP-16 SUB
BOARD
BUBS
as
:
a
4
'
y&U
iz
«t
*5
,
GP-16
SUB
BOARDS
tho
Reason
•
The following problem will
be encountered on The
SUB
board
cures the prob-
The SUB board
cures
the
prob-
few products
(1~2%) already shipped,
when lems
described
at
the
left. lems
described
at the left.
repeating power
on and off cycle
several times in
sequence.
1. GP-16
won't run while the
LCD displaying
stationary message, either
"Super 6P Ver.
1
.0"
or "M60014 or DSP can't
open".
2. No sound or oscillation
sound.
•
1
~
2
%o0
MON/OFF
1
.
t. LCD
“Super GP Ver
1.0”
(OtitUli, “M60014 or DSP Can’t
Open”
t
tM'E&lk
£ h
0
2.
tmm
Field
Addition of SUB board
is mandatory
even the When the
existing SUB board
\
service product
has not encountered
above-described fails
to perform, replace
with
a
+)--
tfx
problems.
new
assembly.
For retrofitting details,
see "SUB Board Mounting
Considerations" on
page
21.
GP-16.
SUB BOARD
H£c£>2fj£{i,
"GP-16 SUB BOARD
(p.
2 i)
i#iUT$v»o
No individual
repair parts avail-
able for
SUB board. For replac-
ing
details,
see "SUB Board
Mounting
Considerations"
on
page 21.
GP-16 SUB BOARD
i-yhWiRUT
“GP-16
SUB
BOARD3X#±<D&j£”
(P.2l)
£
#lLtT?v>
0
\
23