BOSS DR 770 SERVICE NOTES

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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 5Ω or more, the effect of conductive coating cannot be expected. In such a case, replace the case. Ø $ YØ $ /ÍÉç $ µºw‹?C ÷w¼=t mMo µºtx‹?C ÷Uª^-oM‡bUz, Xw Ž `z ÇZ›&bqzØµw æ üwC ÷U¼=`oV ‡b{ µ¤ úqØµw„qw Å‹Uz Ž Ítsqz‹? C ÷w®LUlŠsXs‡bwpzµ›¦õ`o<^ M{

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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. !1 !8 !6 !4!2 !3 !5 !7 a b c 1 2 3 4 7 8 9 !0 d e 6 5 c / ür $ d\wë¿³ßqÆ¿Äxz305"3:&/$0%&3t‡-‡b{ e\wë¿³ßqÆ¿Äxz105&/5*0.&5&3t‡-‡b{