1 J

_____. - j* See appendices for adjustment locations and glossary. tj I i - ' This adjustment must be followed by para. 14-17. _____ On early product, legends for some VR's are Incorrect. Refer to PCB layout in appendix. 1. Place ground to CON TP-4 or D20 cathode. 2. Connect scope to MOD TP-6 or R166 lead. 3. Turn MOD VR14 fully clockwise. The VCFs resonate. 4. Press C2 key, adjust scope timebase and VCF FREQ to display one complete cycle, (across the graticules, same for the rest para.) MOD...

17 Resonance Level

Para. 13-17 must be performed in sequence. Change setup in para. 16 SOURCE MIX to VCO-1.CO FREQ to 10 Scope to INT TRIG. 1. Press A2 key (S N 0600- E3 key), adjust VR14for the figure 3. Set CO FREQ to 10, scope timebase to 5ns div (20iis div). Adjust VR19 to display one complete cycle (5 cycles). Steps 2 and 3 interact, repeat steps as required. 1. Press C2 key, adjust CO FREQ and MOD VR20 to display exactly one complete cycle. 2. Reset VCF ENV MOD to 10, timebase to 50Ms div. Adjust VR21 to...

7407

HA-17555C TC40H000P LM565 Am6012A Quadruple 2-input NAND gates Quadruple 2-input NOR gates Hex inverters Hex schmitt-trigger inverters Dual D-type flip-flops Quadruple 2-input exclusive-OR 3-line to 8-line decoders Dual 2-line to 4-line decoders Dual 2-line to 4-line decoders Synchronous 4 bit binary

8 Vco Env Mod Depth

See appendices for adjustment locations and glossary. Change from para. 7 setup ENV-1 S to 10 VCO-1 to 2' VCO MOD ENV to 0. The adjustment sets maximum voltage of modulating waveform to the value by which VCO's can be shifted within a 3-octave range. 1. Press AO key, adjust MASTER TUNE for motionless Lissajous. 2. Set VCO-1 to 16' VCO MOD ENV to 10. Leaving AO key open, adjust MOD VR9 for the same waveform as in step 1. 9. VCO CROSS MOD BALANCE (X-MOD)...

Description Of Connection Cables

In the below, SN refers to Serial Number of OP-8. For serial numbers up to and including SN220269, the OP-8 was provided with Flat Cable H146 for connecting the OP-8 to the JP-8. Effective from serial number SN230270, the OP-8 unit can be connected to the JP-8 through the Flat Cable H146 provided with the OC-8 unit, or to the JUNO-6O through the DCB Cable H165 provided with the OP-8 unit. Roland provides not only DCB Cable H165 but also DCB Cable H172 for interconnecting JP-8 or JUNO-6O as...

E F 0 H

Below confines description to the point inevitably necessary for performing the adjustments. See figure above 3 . With power off, throw SW-1-2 on Interface board from OPEN to TEST-1 or -2 (on some early models the switch is oriented opposite, so are labels TEST-1 2 on PCB, left hand one is always SW-1-2 and OPEN position is at label OPEN on the SW). The JP-8 has the following functions that are different from those in NORMAL MODE All VCOs are uncompu-tuned, i.e. their pitches are left deviated...

Env1

Connect scope to MOD GH R183B lead or TP-SB. 2. While holding a key, time Attack period on scope. Adjust MOD H VR22 for 6-sec attack period. 3. Switch scope timebase to 20ms div. Trigger scope from TR16 collector of any module. 4. Press and hold a key repeatedly, adjust both ENV-1 ATTACK around 4-5) and timebase VARI or vernier so that envelope's falling edge is centered on the screen. 5. Shift V lead to TP-8 of the module to be adjusted. Adjust the VR22 for centered falling edge.

For Satisfactory Service Work

Dump user's preset memory on tape before attempting adjustments and troubleshooting. 2. If TUNE was pressed in previous adjustments, be sure to power off and on the JP-8 before making adjustment which must be done without compu-tune. 3. Plural keying and miskeying will disorder key assignment sequence. Push HOLD or ASSIGN MODE to off and again to on, as appropriate, to restore the order. Use monitor amp to detect erroneous key assignmanet that LED does not distinguish. 4. Make a practice of...

Ib

See appendices for adjustment locations and glossary. 1. Place ground to CON TP-4 or D20 cathode. 2. Connect scope to MOD TP-6 or R166. Switch scope to DC coupling, vertical range to 20mV div. 3. While tapping a key, adjust VR17 so that DC variations are minimized. 20. ENVELOPE TOTAL TIME MODULE (MOD) 20. ENVELOPE TOTAL TIME MODULE (MOD)

Info

See appendices for adjustment locations and glossary. Although CON VR5is included in part 1,-the trimpot is replaced by 10k resistor on later products. When adjusting MOD replacement, ignore VR5 trimming, following Part 2. Connect scope to TP-6 or RI66 lead. PART 1 1. Set MOO VR18 wiper to midpoint. 2. Press C2 key and adjust CON VR5 for 3V p-p. 3. Adjust VR18 of the remainder Voices for 3V p p. PART 2 1. Press C2 key and adjust VR18 for 3V p-p.

Initial Tuning Upon Power On

When the power is first turned on for the JP-8, thermally unstalbe VCO tends to oscillate on frequencies which are greatly deviating from the expected frequency so that computune circuitry will not be able to determine exact pitch error at a time. If a program encounters such a VCO, the program ceases measurement for that VCO but retains the data, then proceeds to the next VCO. After all the VCOs have been measured, the program ressumes operation from the first VCO, depending on the previous...

Jupiter

See appendices for adjustment locations and glossary. 1. Connect scope to TP-6 of (Upper - MOD A Lower - MOD E). 2. Press C2 key (S N 0600 C4 key), adjust CON VR7 for 50 percentage modulation. MODULE CONTROLLER (CON) See appendices for adjustment locations and glossary. 1. Switch VCO-2 RANGE to NORMAL. Connect scope to CON TP-4. 5V 2. Adjust CON VR1 so that dense signal peaks are appeox. 5V p-p. 3. Switch RANGE to LOW FREQ, check peaks for clip. 25. BENDER OFFSET BENDER MODULE (MOD) See...

Jupiterii

See appendices for adjustment locations and glossary. Compu-tuned VCO needs to be re-calibrated only if it or associated components have been replaced. If a VCO is excessively out of tune right after compu-tune, first check MOD BAL, para. 5-and KCV OUT (INT terminals IM-1, IM-3, etc.) for voltage. Seconds,isolate possible causes before attempting VCO adjustments. As is usual with tuning, several instruments may be used for determining frequency. The calibration proceeds by Lissajous figures...

Mc

DCB Cable H172 is uni-directional, with the signal-flow direction shown by the arrow on the connector. When connecting two JUNO-6O or JP-8 units, be sure to connect the cable so that the arrow points away from the JUNO-6O or JP-8 unit to be played, and towards the JUNO-6O or JP-8 unit to be controlled. Also, when controlling the JUNO-6O with the OP-8, DCB Cable H172 can be used to connect the OP-8 to the JUNO-60. Be sure to connect the cable so that the arrow points away from the OP-8 and...

Module Controller Board

When replacing OPH123 with OPH123A, be sure to proceed the Check IC49 on the both PCBs (being replaced and replacement) for name. If 2101 is on the existing PCB and 5101 on the replacement, take the modification illustrated below. When replacing Upper board or Lower only Adjust VR1 (NOISE LEVEL) of unchanged MOD CON board to match the noise level of new board which omits the adjustment. Reconnect R21 of unchanged MOD CON, referring to drawing to the right. This will eliminate possible...

Notes For Table

Because of misprogramming, 3.3D will display these IC numbers in reverse order. If displayed, read 3. Output from Module A VCO-1 is applied to the DAC Check. Consequently, if this VCO fails, all the remaining tests will not be performed. Push any button, and the version with 00 is displayed. 4. IC13 and IC15 on the 12-bit interface board are inversely numbered. 5. If the 13-bit line malfunctions in the 14-bit D A, the CPU concludes that the D A is 12-bit, and...

Rts

Control or Data is to be Written or Read Read Data Command e Data or Control Command Chip Enable Clock Pulse (TTLI Reset Transmitter Clock Transmitter Data Recover Clock Receiver Data Receiver Ready (has character for 8080) Transmitter Ready (ready for char, from 8080) Data Set Ready Data Terminal Ready Sync Detect Break Detect Request to Send Data Clear to Send Data Transmitter Empty

Steps

To put the JP-8 into the TEST mode, either a) Turn the power ON while pressing PATCH NUMBER buttons 1 and 3. b) Set SI-1 and SI-2 of the Interface board to TEST, then turn the power ON. The test program is executed in the order listed and is stopped wherever it encounters a defective IC (or a problem pertaining to a particular IC), and displays the suspected IC number in the window. To resume the program, press any touch button. (For example, MANUAL.) At the end of program, the window displays...

Power Supply Board

Connect Digital voltmeter (DVM) to -15V (terminal 9,10, 11). 2. DC SUPPLY (VCO) MODULE. MODULE CONTROLLER See appendices for adjustment locations and glossary. MODs A, B, C and D 1. Connect DVM to MOD AB IC1 pin 4 (-VDD). 2. Adjust upper CON VR4 for -13V 5mV. 3. IC1 pin 8 should read +13V 200mV. INTERFACE (INT) PANEL BOARD A See appendices for locations and glossary. 1. Connect DVM to INT TP-3 or R83 (10k) lead facing outside. (See Fig. below right.) 3. Turn all the pots on the panel...

Em

When need arises to modify the JP-8 or to replace parts First consult the table below, then refer to the right as necessary. INTERFACE BOARD p. 34 MODULE CONTROLLER BOARD pp. 37, 38 RAM IC49 of MOD CON BOARD p. 38 CPU BOARD (in relation to RAM IC 49) p. 38 (OC-8) Service Notes When new feature is required, replace existing part(s) with the one indicated by i

Change Information

(Each heading is followed by address to the circuit diagram.) 1. NOISE GENERATOR (D-H, 18-27) IC3 from TL082 to BA662 having AGC. NOISE LEVEL VR1 omitted Only white noise is routed to S H circuit regardless of VCO-2 RANGE position. New circuit Pink noise is selected for S H when RANGE is in LOW position. Ladder Resistors from discrete to resistor array 3. NOISE KILLER SWITCH (D-E, 28) Newly attached for cutting off noise signlas. Used in particular adjustments. Close this switch when step...

Prom Replacement

When replacing PROMs A, B and C with different version, replace them in a set. Version 3.2 can replace 3.1, 1.0 and 0.7 Version 3.1 can replace 1.0 and 0.7 The reverse does not hold true. ROM 3.4 can replace 3.3D and vice versa. NOTES PROM D is required only when OC-8 or DCB BOARD is present. PROM D must be used together with A, B, C of 3.2 version and up. PROM D contains diagnostic programs. Refer to P.46 for test procedure. Difference between 3.3D and 3.4D is that the latter has debugged...

Jupiter8

TL J_ rr I I 1 1 1 1 ' If er e > r& g i n i i , i 1 i 8-j p j- j - S1 f -ff 1. Connect scope to TP-4 of any MOD. Press A2 key, adjust timebase and vernier (VARI) to display one complete cycle. 2. Press A3 key. Sway and hold BENDER Lever at extreme left, adjust VCO BEND to display 1 cycle. 3. Press A1 key. Sway and hold BENDER at extreme right, set VR3 for complete 1 cycle.

Gbih Out A 3

21 RESONANCE 31 hpf il EWV2 KE -o 3< t env3 A. -O 35 vcolRANGE -o 3g env2 > . -O EH V 1 2. -o 38 ew2 r. -o < t nv1 t.f. 1+3 vcf l db ) o h env a. -o ug envi -0 -O 47 VCP CUTQFF -o ue Envi r. -c us envi fola So EKIV1 s. There ahs W> oliWerehl GND lines, is rat cmnedet) Wj on t s PCB. Hi3kesl Re-f. Des, are IC 40, OS , CSO, VR236 MODULE BOARD OPH124(149H124) (pcb 052H270) ns tecfct d OK- Sl< Su.- rate TLOSC S pes CID C3hbOK. 25 CZ3 wtefcal flli*i.RB25FX 23 p S.stat-E)ls-C33CiS61

Module Controller Oph123

POWER SUPPLY board B (100 117) PSH061 (etch mask 052H302) POWER SUPPLY board B (220 240) PSH062 (etch mask 052H302) POWER SUPPLY hoard C PSH060 (etch mask 062H303) power Tr GHS 1 4A (CPU board) MGP0003 (3.OA) prim. 100 117V CEE T1.6A prim. 220 240V CEE T5.0A sec. 220 240V SEMICONDUCTOR IC (* CMOS) 15159114HO

Key Split Point

To make JP-8 more convenient for the user to play on, key split point becomes under the control of the player. DIGITAL COMMUNICATION INTERFACE OC-8 amp DCB To have JP-8 externally controlled through Digital Data Bus connecting either to digitally operating musical instrument or to Analog Digital Interface Unit e.g. OP-8 that accepts analog CVs in parallel . Digital Communication Interface Board DCIB is built in. OC-8 First, DCIB is named OC-8 and sold as an optional kit. DCB Second, another...

Substituting This Board For 12bit Dac Board

The D A Converter IC14 is changed from 12-bit Am6012 to 14-bit ITS80141 with this PCB version. Along with the change the following parts are also changed. LS273 TTL, IC13 LS175 TTL, ICI 5 LS175 TTL, IC11 4051 IC25, IC26 74LS74 IC9 40H273 CMOS, IC15 40H174 CMOS, IC13 40H175 CMOS HD14051 Hitachi only TC4013 Prepare PROMs for CPU board A, B, C 3.2 version inevitable when OC-8 exists for IC34-IC36 Replace existing PROMs with these PROMs. Adjust DAC circuit, referring to 4. DAC on p.25 of this book....

Precautions

Do not expose your workbench directly to fans, heaters, air-conditioners, etc. especially after disassembling, most circuits are temperature-sensitive. The adjustments on the JP-8 should not be done more than necessary. Adjustments merely attempted on a particular module VOICE might cause sound balance away from entire VOICEs and can, in an extreme case, require the same procedures to be done fifteen times for the remainder. . . DESIGNATION - TEST POINT, TRIMMER, PCB - For PCBs that are...

Pcb Edition

Dot and circle above PCB code are indicative of edition stands for 1, and o for 5. Example o 6th edition. Illustrated on pp. 48-50 is information on MODULE and MODULE CONRTOLLER Boards mounted on the JP-8 models with serial numbers up to 090599. For circuit diagram, refer to p.11 or p.12 although some small discrepancies may exist. CAUTION ON REPLACEMENT OF PCBs IN THIS SECTION Although terminal for terminal compatible, when mix used, new and old PCBs process signals in slightly different way,...

Pin Functions

ADDRESS BUS Transfers 16 bits to memory address decoders CPU board- IC21, 22 and 23 for controlling the followings on CPU board - ROM, CMOS, RAM, N-ch RAM, TAPE and TUNE reading. on MOD CON board - RAM, UP, LO and VCO select. Lower 8 bits are transferred to I O Address decoders Interface board - IC1, 2, 3. 4 and 8 for controlling the followings IN - Function sws, Digital IN 1, 2 and 3 , Key IN, A D. OUT - Dot LED, Num DED, Matrix, Analog sei, Key out, D A Up Lo, KCV sei, Gate out, EXT synth,...

Computune With Tune Button

When the computune program is triggered manually with TUNE button after power-on-tune , it runs only once for each VCO since the program already had data on fine tune, and drastical change in VCO frequencies is likely to occur. If the program fails to compensate frequency drift, iterative tapping of TUNE will bring VCO closer to correct pitch. Relying on this method is prefarable only in an emergency the cause of out of tune must be eliminated as early as possible. Lines 11-17 Reads as follows....

8v 9v

In this mutual arrangement any KCV VKnx at a key Knx is obtained from the equations VKnx VKno W WIDTH x Knx or VKnx T TUNE -W 84-Knx where, W 1 12 V voltage steps per half tone T VKn84 In the following computuning, T is a reference voltage in calculating every KCVs to the equation 2 above. Upon power on for the JP-8, computune program starts frequency measurements at two points with MOD.A VCO-1 by applying KCV of Kn24 3V and VKn84 8V to it. If the VCO output is 20 cents higher than expected...

18 19 20

77 - gt 57 KA TFZ - BtOSKA TK3.4. 5.6 - K30A 77 - gt 57 KA TFZ - BtOSKA TK3.4. 5.6 - K30A PANEL BOARD B OPH126 149H126 pcb 052H272 LEVEL SELECT BOARD 0PH139 149H139 pcb 052H330 S 10 11 12 13 14 15 16 1 18 19 20 21 PANEL BOARD C OPH127 149H127 pcb 052H273 View from foil side All sliders UE9RC16B14 All rotary pots VM10RK20B14 All rotary switches SRM1034-K15 All sliders UE9RC16B14 All rotary pots VM10RK20B14 All rotary switches SRM1034-K15 All sliders LFE9RC16B14 All lever switches SLE622-18PS...

Jp8 Service Notes

2Wi X II 13149103 115V 2Wi II 13149104 220V This Notes makes First Edition obsolete and consists of two parts Part 1 Previous First Edition pp.- _3i Part 2 Mainly applicable to JP-8 units with Serial Numbers Slide switch SSB-023-12RN 13159117 CANON connector socket HA16R-3P 13439851