Roland HP 2700 - Page 35

Dec.
1990
iK
MAIN
BOARD
CHANGE/
MAIN
/-n-
(1)
The MAIN
board
has
been
modified
as
(1)
MAIN
Tff—
K(Ss
TIB®
J:
9
follows.
ASSY No. PCB No. HP-
2700 HP-
3700
ASSY
PCB
ZB30100
ZB30100
7624291000
2292586900
-
ZB40999
-
ZB40799
ASSY
PCB
ZB51000
--
ZB50800
~
7624291001
2292586901
Enhanced
EMI
countermeasures
1. Unnecessary
jumper wires
were
removed.
(6
wires)
1.
(6*>
2.
PCB^^M
2. The
PCB
was modified.
2292586900
^
2292586901
2292586900
^
2292586901
3.
ffitaTl/-
(RAlO.l
1,12,15,16)
3. The
resistor
array
(RA10,
1
1
.
12,
15.
16)
was
Resistor
Array
10k X 4
removed.
MNR34J5A103E
(15399917)
4.
RC
modules (RCA
1,2,3)
were
added.
(RCA
1,3)
RC Module
ARCL7X103J470M
(13529212)
(RCA
2)
RC
Module
ARCL9X103J470M
(13529209)
NOTE:
The
old
assembly
and
new assembly
are
compatible.
4. RCti^i-;!/
(RCA
1,2,3)
(RCA
1,3)
RC Module
ARCL7X103J470M
(13529212)
(RCA
2)
RC Module
ARCL9X103J470M
(13529209)
a
:
IBASSYiSfASSY<!:(iagltt*''W')t-ro
(2)
After-mounted
parts on
the
main
board
I
Part
I
Ceramic
Capacitor
470
pF
)lies
to serial numbers
(2)
MAIN/if-
'uK.
i
y
•
y
470pF
[
1^2700
ZB30100
ZB73058
ZB30100
ZB30100
ZB73058
ZB72549
ZB30100
ZB72549
uuiil!
iiiiir.
HP-3700/2700
View
from
component
side.
35