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Extracted text from BOSS DR 770 SERVICE NOTES (Ocr-read)
Page 1
DR-770Feb. 1999
2
PANEL LAYOUT
FRONT VIEW
REAR VIEW
Top Case
(01787767)
LED (red)
SLC-22VR3F
15039221 LED (green)
SLC-22MG3F
15039222 Rubber Switch KEY
(01787790) Rubber Switch PAD
(01787801)
Pressure Sheet Sensor
(25095101)
Plate
(22055165)
Display Cover
(01787778)
LCD
RCD1627R
(01788490) DR-Knob (BLK)
(22485303)
Rotary Volume
RK14k 124 50KB×2
(13289189) DR-Knob (BLK)
(22485303)
Rotary Encoder
EC16B 24204
(01231367)
KEY Top
(12499175)
Switch
SPUN19F
(13129369) Jack
HEC0740-01-010
(13449728) Jack
YKB21-5130
(13449433)
Jack
HLJ7101-01-3010
(13449283)
Bottom Case
(01787734)
Jack
HLJ7001-01-3010
(13449284)
MIDI Connector
M-S2-3P
(13429642)
Deterioration in the conductive
coating inside the case
The inside of the case is coated with a conductive material. If the
board undergoes repeated detaching/attaching, the coating on the
boss may deteriorate.
If the resistance value between the case center and the head of the
boss becomes 5- or more, the effect of conductive coating cannot
be expected. In such a case, replace the case.
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Page 2
DR-770Feb. 1999
3
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V EXPLODED VIEW
[Part]
NO.
PART CODE PART NAME DESCRIPTION
q01787734 BOTTOM CASE
w01898189 FOOT D10 T4
e71238156 JACK BOARD ASSY
r12449445 FERRITE-CORE ESD-R-16C
t71238167 VR BOARD ASSY
y71238178 ENC BOARD ASSY
u01892034 VR SHIELD SHEET
i71238123 MAIN BOARD ASSY (EXG)
o22055165 PLATE 205-165
!025095101 PRESSURE SHEET SENSOR 509-101
!123365653 RUBBER CONNECTOR 336-653
!201788490 LCD RCD1627R
!301787790 RUBBER SW KEY
!401787801 RUBBER SW PAD
!501787767 TOP CASE
!612499175 G S-BUTTON S1H BLK 249-175
!701787778 DISPLAY COVER
!822485303 D R-KNOB L BLK 248-303
[Screw]
NO.
PART CODE PART NAME DESCRIPTION
a40012456 SCREW M2.6×8 BINDING TAPTITE P FE NI
b40012489 SCREW M2.6×10 BINDING TAPTITE FE BZC
c40011223 SCREW M2.6×6 BINDING TAPTITE P NI
d
This MG WASHER and MG NUT are included in the #01231367 ROTARY ENCODER.
This MG WASHER and MG NUT are included in the #13289189 POTENTIOMETER.
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!6
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!3
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4
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8
9
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