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Roland JX-305 GROOVESYNTH Service Notes

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See also: Owner's Manual
JX-305
JX-305
GROOVESYNTH
TABLE OF CONTENTS
Specifications
Panel layout
Panel Layout Patrs List
Exploded view
Parts list
Identifying the version number
Saving and loading user data
Factory preset
Upgrading the program memory software version
Test mode
Keyboard parts list
Keyboard disassembly
Block diagram
Circuit board (MAIN)
Circuit diagram (DIGITAL)
Circuit diagram (SND_PWR)
Circuit diagram (INTERFACE)
Circuit board (PANEL A)
Circuit diagram (PANEL A)
Circuit board (PANEL B)
Circuit diagram (PANEL B)
MODULATION
BENDER
Copyright © 1998 by ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the written permission of ROLAND CORPORATION.
17059943
SERVICE NOTES
First Edition
Issued by RJA
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Printed in Japan AA00 (DP) 1
SPECIFICATIONS
JX-305:GROOVESYNTH
Keyboard
61 keys (with velocity and channel aftertouch)
Tone Generator
Maximum Polyphony
:64 voices
Parts
:24 parts (8 + RPS:16)
Built-in Effects
:Reverb, Delay, Multi-Effects (24 types)
Patches
:Preset:640 User:256 Card:512
Rhythm Set
:Preset: 32 User: 20 Card: 20
Sequencer
Tracks
:8 + Mute Ctrl
Songs
:50
Preset Patterns
:274
RPS Patterns
:494
User Patterns
:200 (Maximum)
Card Patterns
:200 (Maximum)
Maximum Note Storage
:approx. 75,000 notes (Internal)
:approx. 220,000 notes (2M Card)
:approx. 480,000 notes (4M Card)
RPS Set
:60
Pattern Set
:30
Tempo
:20.0 - 240.0
Resolution
:96 ticks per quarter note
Recording Method
:Realtime, Step1, Step2
Quantize
:Grid, Shuffle, Groove (71 types)
Connectors
Output Jacks (L (MONO), R)
Phones Jack
MIDI Connectors (IN, OUT, THRU)
Pedal Hold Jack
Pedal Control Jack
Pedal Switch Jack
Memory Card Slot
Display
LCD : 16 characters, 2 lines
Beat LED
Sep. 1998
Power Supply
AC Adaptor (DC 9V)
Current Draw
450 mA
Output Impedance
2.2 kΩ
Dimensions
1,011 (W) x 289 (D) x 83 (H) mm
39-13/16 x 11-7 / 16 x 3-5 / 16 inches
Weight
6.9 kg / 15 lbs 4 oz (Excluding AC Adaptor)
Accessories
Owner's Manual Set (English)
(PNo.71122389)
Owner's Manual Set (Japanese)
(PNo.71011667)
Card Protector
(PNo.01346312)
AC adaptor
ACI-100C
(PNo.00905756)
ACI-120C
(PNo.00905767)
ACI-230C
(PNo.01018312)
ACB-230(E)
(PNo.01458278)
ACB-240(A)
(PNo.12449549)
Options
Stereo Headphones
:RH-20/80/120
Pedal Switch
:DP-2/6, BOSS FS-5U
Audio Connection Cable
:PJ-1M
:PCS-075W/150W/250W
MIDI Cable
:MSC15/25/50
SmartMedia
:S2M-5/S4M-5
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Summary of Contents for Roland JX-305 GROOVESYNTH

  • Page 1 Circuit diagram (PANEL B) ....................27 MODULATION BENDER Copyright © 1998 by ROLAND CORPORATION All rights reserved. No part of this publication may be reproduced in any form without the written permission of ROLAND CORPORATION. 17059943 Printed in Japan AA00 (DP) 1...

  • Page 2: Panel Layout

    JX-305 Sep. 1998 PANEL LAYOUT FRONT VIEW y i o !0 !3 r t y REAR VIEW PANEL LAYOUT PARTS LIST [FRONT VIEW PARTS LIST] [REAR VIEW PARTS LIST] Part Number Part Name Part Number Part Name @- B 01452301 J R-KNOB SF BLK/LCG 01343101 D C-ESCT BX1H BLK...

  • Page 3: Exploded View

    JX-305 Sep. 1998 EXPLODED VIEW [PARTS] Part No. Part Name 01129334 LCD DM16280AUB 01452201 TOP PANEL 01452212 BOTTOM COVER 01452223 SIDE PANEL R 01452234 SIDE PANEL L 01452245 DISPLAY COVER 01452256 DISPLAY HOLDER 01455990 DUST COVER 12359139 FOOT FF-018 BLK 13149125 AC SW EST206B 5A/125V 22205900...

  • Page 4: Parts List

    JX-305 Sep. 1998 PCB ASSY PARTS LIST # E 71011634 PWB MAIN ASSY 71011723 PWB PANEL A ASSY CONSIDERATIONS ON PARTS ORDERING : PWB MAIN ASSY SAFETY PRECAUTION: When ordering any parts listed in the parts list, please specify the following items in the order sheet. 71017190 PWB PANEL B ASSY The parts marked...
  • Page 5 JX-305 Sep. 1998 POTENTIONMETER MISCELLANEOUS 01453134 EVJY15F01A54 L=12.5 STEREO VR VR10 on PA 01450745 QFP HEATSINK 01453412 EVUJFUFK1B14 L=12.5 VR1-5,7-9 on PA 12199584 M1698 GROUNDING TERMINAL 01565256 EVUJFYFK1B14 L=12.5 CENTER CLICK VR6 on PA ACCESSORIES(Standard) CRYSTAL 71011667 OWNER'S MANUAL SET(JAPANESE) 00901912 MA-406 24.576MHZ X2 on MB...

  • Page 6: Identifying The Version Number

    JX-305 Sep. 1998 IDENTIFYING THE VERSION USER DATA SAVE AND LOAD NUMBER ƒ You can save the user data to a memory card (= SmartMedia). 1. Turn the power on. Before perform the data saving, you must format a 2. While holding [PATCH], [PTN/SONG] and [TEMPO & memory card by using the following procedure.
  • Page 7 JX-305 Sep. 1998 Saving the user data (User Backup) Restoring the Saved Setting Back to Internal Memory (Backup Load) 1. Make sure that a memory card is inserted into the memory card slot. 1. Make sure that a memory card is inserted into the memory card slot.

  • Page 8: Factory Preset

    JX-305 Sep. 1998 FACTORY PRESET Upgrading the program memory software version 1. Press [UTILITY]. The indicator will light. JX-305 uses the FLASH MEMORY. These ROMs can be update the program by transferring the 2. Press PAGE [<] [>] several times to select "FACTORY data in the upgrading disk (SMF format), through MIDI.

  • Page 9: Saving And Loading User Data

    JX-305 Sep. 1998 (For cases where program data volume is small, the file TEST MODE count is less than 16.) While playing, a check sum appears on the display. NOTE: Before executing test mode, be sure to backup user data as explained in the section "Saving and Loading user data".
  • Page 10 JX-305 Sep. 1998 Exiting the TEST MODE 1-2. When the test of the each device end, display --- will change to "ok" or "NG". If test result are "ok", next test When Bender Test ends, the following display appear. runs automatically. Troubleshooting for Memory test Result of Test Check...
  • Page 11 JX-305 Sep. 1998 2-4. Remove the MIDI cable. Troubleshooting for Card test Display shows "Disconnect ok", and then next test run Result of Test Check automatically. No response Check IC29 (Pin 1 / 2 / 7) If the Card is inserted, Voltage of Troubleshooting for MIDI test IC29 Pin 1 becomes high level.
  • Page 12 JX-305 Sep. 1998 Troubleshooting for Pedal test 5-3. If test ends normally, press [ENTER] to start next test. Result of Test Check No response Check Q4 Troubleshooting for SW & LED test Is signal level of the PEDAL change ? Display remains "on"...
  • Page 13 JX-305 Sep. 1998 6-3. When test ends, press [ENTER] to start next test. Troubleshooting for After Touch test Result of Test Check No response Check Q30 Troubleshooting for AD test Check the condition of connection Value does not Check the power supply of Q7 Result of Test Check reach the 0 or 127...
  • Page 14 JX-305 Sep. 1998 8-4. When test ends, press [ENTER] to start next test. Troubleshooting for LCD & Encoder Test Result of Test Check One of the dot is Replace the LCD unit. Troubleshooting for Sound Test not lit Result of Test Check Contrast of the Check R249...
  • Page 15 JX-305 Sep. 1998 11-5. Are the following values obtained when the bender Troubleshooting for the AD Test lever is moved all the way to the left and right ? Result of Test Check No response Check Q6, 7>Check the condition of connection level left...

  • Page 16: Keyboard Parts List

    JX-305 Sep. 1998 KEYBOARD PARTS LIST KEYBOARD DISASSEMBLY JX-305(SK-861-K) PARTS LIST 1. ATTACHING THE PCBs No. PARTS No. PARTS NAME 32575349 SK-8 N-KEY CF Required Parts 32575348 SK-8 N-KEY EB PARTS NAME PARTS No, Qty. 32575350 SK-8 N-KEY D 70890767 SK-8A61 PWB HI-AFT ASSY 32575351 SK-8 N-KEY G...
  • Page 17 JX-305 Sep. 1998 2) Next, aligning the positioning bosses of RUBBER 4) Then, tighten the LOW and HI PCBs with the Tap Tight SWITCH with the circular holes of SPACER, and as Screws. First tighten the near-center Screws 1, then the done for the spacer, place four RUBBER SWITCH 12PL, end Screws 2 on the other side.

  • Page 18: Block Diagram

    JX-305 Sep. 1998 BLOCK DIAGRAM...
  • Page 19 JX-305 Sep. 1998 CIRCUIT BOARD (MAIN) ASSY 71011634 View from foil side.

  • Page 20: Circuit Board (Main)

    JX-305 Sep. 1998 CIRCUIT BOARD (MAIN) ASSY 71011634 View from components side.

  • Page 21: Circuit Diagram (Digital)

    JX-305 Sep. 1998 CIRCUIT DIAGRAM (DIGITAL) I C 8 I C 2 C 2 1 7 C 2 1 9 C 2 2 1 C 2 2 3 C 2 2 5 C 2 2 7 A 1 0 C 2 1 6 C 2 1 8 C 2 2 0 C 2 2 2...
  • Page 22 JX-305 Sep. 1998 CIRCUIT BOARD (SND_PWR) PA N E L B O A R D 5 2 147-1010 C162 220p C170 10/16 4.7k R64 56k C143 0.1u C145 R203 C148 220/16 4 7(1/10W) 4 7 (1/10W) C255 100/16 R251 39k 0.047u( Film) IC23B M5216AFP...

  • Page 23: Circuit Diagram (Interface)

    JX-305 Sep. 1998 CIRCUIT DIAGRAM (INTERFACE) A S 1 A S 0 C 2 5 8 C 2 5 9 1 5 p 1 5 p J K 1 R 2 4 5 Y K F 5 1 - 5 0 4 1 4 7 0 R 4 2 THRU...

  • Page 24: Circuit Board (Panel A)

    JX-305 Sep. 1998 CIRCUIT BOARD (PANEL A) ASSY 71011723 View from components side.

  • Page 25: Circuit Diagram (Panel A)

    JX-305 Sep. 1998 CIRCUIT DIAGRAM (PANEL A)

  • Page 26: Circuit Board (Panel B)

    JX-305 Sep. 1998 CIRCUIT BOARD (PANEL B) ASSY 71017190 View from components side.

  • Page 27: Circuit Diagram (Panel B)

    JX-305 Sep. 1998 CIRCUIT DIAGRAM (PANELB)

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