Holder

064-186A N0.I86A (Module, Module Controller-Mother) 064-049B No.49B (Panel No.218G-Control A,B,C) 064-050B No.50B (Panel No.218G-Control Board A, B, C) 064-184A N0.I84A (Module, Module Controller(left)-Holder N0.I86A 064-185A No.l85A (Module, Module Controller(right)-Holder N0.I86A 064-187E No.l87E (Power switch) 064-188B N0.I88B (Keyboard-Bender Panel) 064-189C No.l89C (Sideboard-Panel No.218G) 064-190A No.l90A (Keyboard-End Block)(necessary for earlier products) 064-203B No.203B (Bender Board...

Vcf

APPLICABLE TO S N xx 4100 and higher or PCB 052-314 E w trimmer 31 (VR11 on circuit diagram) Just change above panel setting by pushing VOICE This adjustment should be made only after finish of all other VCF adjustments and should follow imediately Section 24 with VOICE button pushed in. Observe every module board1s waveform on the screen, adjust trimmer 31 for uniformity in shape and in level. 26. NOISE LEVEL module control board Connect scope ground to GROUND 3 on Mother board.

Changed Parts

Although the manufacture has already employed new Parts Coding system (8-10 digit), this list keeps thoroughly the old one to avoid confusion. Parts order in old number will be translated into new at the factory. Each pcb can replace earlier versions with or without involving alteration, see page 12-2 and individual sections. 181-022C Key Assinger (pcb 052-032C) 181-019D Mother board (pcb 052-364D) 181-020E Module board (pcb 052-314E) 181-021E Module Controller (pcb 052-235E) 181-023E Chorus...

Ttttt

O> > > > > > > PHS& SBSiziS KlpqpqpqixipqpiqpriKi fo PH P4 < i o o o o o > > > t> > MOTHER BOARD TIMING DIAGRAM in MANUAL MODE (SLIDER SWITCH READ HOLD, A D & D A CONVERSIONS, MPX and DMPX) Figure below is part of CP9, 11, 12, 17 and 13 at the left showing functions and timings of A D, D A conversions and the Switch reading. Studing D A conversion theory on the Mother Board by observing the converter output waveform is very helpful in understanding the operation...

L

When Arpeggio Selector Switch is depressed, Key Assign Mode is turned to POLY 2, too, because qf the Selector's contacts wiring (refer to Control Board F circuit diagram) Under Arpeggio Mode, U040-011 aends out KCV and GATE signals following the Arpeggio pattern with one note each at the rise time of the clock pulse on T1 pin. When the mode is UP mode, KCV is output with addition of 1 volt each. Or on DOWN mode, it subtracts 1 volt each. Or with UP DOWN mode, it is witli the combination of...

13 Vcf Envelope Balance Module Board

NOTE POLARITY - NORM Use key pressing arrangement shown in Section 7. To let your left hand free from key play, 1. while pressing A2 key for module A, CMa10 push HOLD into ON. 1 F 2. While moving ENVELOPE MOD slider 0 to from 10, adjust trimmer 16 of A module for no frequency change. 4. Duplicate steps 1-3 for other three modules.

Ii

According to the turns of the key depressions, the situation of the key depressed at such particular time, and the position of the key Assignment Mode Selector, 8048-011 makes assignment of KCV and GATE signals to the 4 Module Boards. 8048-011 makes use of the 6 bits of DBO to DBS for KCV out and 1 bit of DB7 for GATE out. It puts them together into 1 byte format and sends it out, group by group,to the Modules, A,B,C and D in time sequence. These digital data in 6-bit that conie out of 8048-011...

Description Jp4

- Reading of CONTROL PANEL -The PROGRAMMABLE SECTION The 8048-012 reads the patching on the Control Panel and converts them into digital data of 16 bytes. ( lbyte 8 bits) Of the Control Panel,the section namedPROGRAMMABLE consists of 16 pots and 14 switches, these 16 pots produce 16 different kinds of analog voltage varying between OV to 5V. The 14 SWs, on the other hand, produce binary digital data of H or L, given by +5V or OV, respectively. The 16 analog voltages that come in parallel to...

Xtal 1 Xtal 2 Reset

Inputs for internal Clock Oscillator The microcomputer 8048-011 (ICl) is a central point of the Key Assigner Circuit. 1. Main Functions of Key Assigner Board Followings are its main functions (2) Generation of KCV and GATE signals, and assigning them to four Voice Synthesizers (3) Generation of KCV, GATE signals for use in Arpeggio All of those are performed under the control of 8048-011. 2. Scanning of Keyboard Data The 8048-011 finds out what key is depressed by scanning the keyboard....

Cis

Primary Circuit Change Circuits in dash circles concern VCF control system. The modifications show constant voltage application for use together with Module board 181-020 -D, -E or -F, while orig- MODIFICATIONS ON MOTHER BOARD other than those described on the left 4. Disconnecting ground path from Control Boards A,B and C The jumper wire leading to pin 1 of terminal A4 is removed to prevent noises from being induced on control boards. With Serial Number 820950 Refer to illustration on back...

Ghd 1 I

Before soldering, local and ground points, and for the voltages since the jumper wires on the foil side and terminals are different from pcb to pcb, the drawings on this page as a reference, not a practical without this jumper, solder wires at point A without this jumper, solder wires at point A Components, jumpers and pattern cut on foil side

Adjustment

DESTINATIONS of CONNECTORS El Mother Board IC30 Output Mixer Control Board D via Module Controller B5 1,2,3 Module Board 03 2,6,8,9 VCF,VCA, ENV GEN T7 1 Mother Board,Module Eoard Cl l-4 D6, Control Board except D Module Controller B3 7,8,9 B4 l,2,3 E3 Chorus Ensemble Board Fl

3

PUSH BUTTONS ENSEMBLE amp HOLD- OFF POLY-2 amp MANUAL- ON Use the key pressing arrangement given in Section 15 VCA ATTACK but the last key pressed should always be C2. Note the attack time for 4 VCFs. Attack time is defined as the time from pressing the key to the time when the increasing frequency drops suddenly. Using the same key pressing method, adjust trimmer 22 so that the shortest attack time noted becomes 3 seconds. Check that the remaining attack times are within 3 seconds 40 . 19. VCF...

Jp4 Adjustment

The last page of this ADJUSTMENT has a foldout which shows location of test points. Numbers in circle on the figures in this adjustment refer to trimmer potentiometers used for adjusting, whose designations are independent of those on circuit diagrams and PCB layouts. In some PCBs, exact trimmer location may differ from representaion shown below. Some PCBs have fewer preset potentiometers. CAUTION - Pour Trimmers, CONTROL BOARD G - Always set these trimmers at midpoint before starting...

Basic Controls Settings

Trimmer 31 P- INV of Module Board 052-314E later version,S N xx4100- All midpoint. These settings allow each adjustment step to be made with minimum reset. CONTROL BOARD-G 052-236 all pots at midpoint CONTROL BOARD-G 052-236 all pots at midpoint 1. DC VOLTAGE 15 Volt power supply board

Pcb

181-006D Control Board A Etch mask 052-330D 181-007D Control Board 3 Etch mask 052-329D 181-008B Control Board C Etch mask 052-328B 181-009D Control Board D Etch mask 052-331D 181-011A Control Board E Etch mask 052-335A 181-012C Control Board F Etch mask 052-237C 181-013 Control Board G Etch mask 052-336 181-019B Mother Board Etch mask 052-364B 181-020C Module Board Etch mask 052-314C Serial No. up to 790799 Etch mask 052-314D Serial No. 800800 and higher 181-021C Module Controller Board Etch...

Module C

Is highest amplitude, lower the highest. This will increase other modules' level, the new highest, then to next until four modules are equal in Keep amplitudes close 200mVp-p with RES knob if one module mis-up the knob a little. Repeat trimmings until none is outsized. s begin resonating simultaneously when RES 11-B. Serial Number with 800800 or PCB 052-314 D or E 1. With trimmer 18, find a module least accessible to 200mVp-p. Set other modules for that value with trimmer 18. 2. Set RES for...

Module Board

Same as for Section 11 but RES knob at 10 1. Use key pressing arrangement shown in KEY ASSIGN LOGIC or Section 7. 2. Panel setting and test point are common to all versions. Scaling of resonating VCF can be done by different methods. Below describes procedure using scope's graticule as a measure. Lissajous method shown in Section 10 can also be adoptted. Apply reference sinewave of 880Hz to scope V.IN and adjust time base H for 2 cycles across graticule. Disconnect reference note from, and...

Differences From The Predecessors

Using IC12 IR3109 for VCF in place of BA662 selected. Adding VCF INV ADJ. for easier preset VOICE sound tailoring. Although interchangeable with former PCBs, the following are involved when replacing Different steps for VCF FREQ and WIDTH adjustments Some alterations on this pcb - when existing one is 181-020 B or C -to meet circuit configuration indicated on p.19 in this case read 181-020D as 181-020E . BA662 also see p.16-2 2 The BA662 is a current controlled variable transconductance vari-gm...

Info

Basic differences between the designs Old circuit right Current from Constant Current Sources is shared with four ICs. Changing one trimmer changes the upsets the balance of the other modules. Adjusting the to accurately divide the current sources is difficult. New circuit left In the new circuit, the trimmers of each other because they are supplied from constant IC27 and IC28. Q20 and Q21 serve as V-I converters.

4j52

The antilog current o keep the balance it sends regain balance. These are the process how to output frequency which is antilog-proportional to the it voltage. The pulse output here is of so nar-width as yet. jt is necessary therefore to 'ide further wave conversion. IC7 is a multiplexer divided frequency, IC6 is a frequency dividei to make selection from the IC5a generates sawtooth waveform synchronized to that of the selected frequency. The amplitude of the sawtooth waveform is kept constant...

X

Each time, the D A output approaches successively nearest to the A D input voltage. And finaly, when 8048 completes them all for DB7 to DB2 for bits, it has decided the data on the nearest approximation to be equal to that of input of the A D converter. Here provided on this Compu-Phonic Synthesizer are CMOS RAM, IC2, 5101 for memory of the tone color timbre data to be used on Compu-Memory and ROM which resides in 8048-012 for use on PRESET mode. 8048-012 outputs from Port 1 the address data to...

1r3109

The IR3109 contains four variable transconductance amplifiers designed for VCF applications in electronic musical instruments. The device is equipped with four high input impedance buffers, and anti-log circuitry V-in to I-out which controls conductances of four amps. . wide transconductance variable range ljil -lOmU . low input offset voltage less than 3mV . high input impedance. MOS P-channel buffer

Jp4 Description

8048 Block Diagram

In the Mother Board included are the microcomputer 8048-012 and its perpheral circuits, refer to the General Block Diagram when reading the following 2. The 8048-012 takes in at first the voltage data of lt of the Slider pots on the Control Panel and converts it into 6-bit digital data. At the same time, it reads out Switch Position on the Control Panel and converts it, too, into 2-bit digital data. The two data thus obtained are combined to make a total 8-bit data. These are held there for a...

Overall

Roland Jupiter

SIZE 9 6 W X410 D x 179 H mm ACCESSORIES. 2 5m hookuo cords 2 Gray 016-008 Black 016-081 White 016-085 Red 016-086 Green 016-087 Yellow 016-088 Blue 016-089 Screws 2 , 2 Keyboard and Left control ur.it removal For only Left control unit removal Screws 2' , 3 4x60mm Oval BC Fe Dished washers 4mm 2pcs each 4x25mm Oval Fe BC Dished washers 4mm Nylon Rivet Bender Connector Control Board Holder KRP-335 4pcs Unit PB-4 Assy Bo.264 D 181-009 , 2 2041 Feet Collar 4pcs blk BU4850CA25 111-024 Screws 4pcs...