Roland CR-5000 Bedienungs- und Wartungshandbuch

DEC.8,1981 CR-5000/8000

CR-5000/8000 service notes

SPECIFICATIONS First Edition

Second Printing (July 12, 1983 E2)

OUTPUT IMPEDANCE Less than 6Kfi or less than 25Kft (Serial No. CR5000 091100-, CR8000 090900-)

TRIGGER OUT Level: +5 positive edge

Width: 44ms (typ) @TEMPO min./12ms (typ) @TEMPO max.

OUTPUT (max.) 4Vpp @VOICE LEVEL max./VOLUME max./ACCENT min. (16V p-p <g> ACCENT max.)

(into 100KS1) 2.5Vp-p @VOICE LEVEL mid./VOLUME mid./ACCENT mid.

(CR8000)

SYNC IN +15V(max.)

SYNC OUT +15V (Tempo clock -6.7ms-71ms)

POWER CONSUMPTION ...CR5000: 10W, CR8000: 12W

DIMENSIONS 331 (W) x278(D) x108(H)mm

WEIGHT '3.7kg

NOISE 0.3mV rms (-68dB) (OdB =0.775V)

(load lOOkH) (DIN 45405 wtd)

Button

N-523(2247052300)

Button

N-516( 2247051600)

Button

N-517(2247051700)

Buttons

*N-520(2247052000)

Switch

SRM1026K15

(13119508)

Knob

** CR-5000

*CR-8000

Switch

*SRM101CY15( 13H9806)

l*SRM1018K15( 13119704)

*7-segment LED

TLR312 (15029125)

Display window

2222030200

Pot

EVHRRA361B14 (13219229

)

Knob N-165(2247016500)

Panel

•2221027200

2221026000

Button N-517 (2247051700)

LED ***n

GL-3PG2 (15029112) ^0>

N-128(2247012800) ALL KEYBOARD SWITCHES: KEHlCf

rnnn Ti.in- .m*x huo

CR-5000/8000

.J !i

?*•: CIN

anx.

CIH

OUT

AMTI UD§

Of2,Ql3

BUFTB

CMO

BUFFS

«| vco

ICI6.0II

DIVIDER

ICI5

8UFFB!

T.FF-

ICI5

one

SHoT

OU.*49

ECI&

8UfK»

gwS

BuffB<

QI5

CPU

CLOCK

16HH,)

auFfts

RJFW

0H£

SHOT

C47 RS9

1CI6

4>"C

BufTER

IC7

icn

:ci2

X'TAL

APDRESS

CPU

LC10

INT RD >-

WR >-

P27 —

PORT

RKET

PDWEK SUPPLY —•5

—-15

ADDRES5

6us ^r

HRam %

WE M>

DATA BUS

ttSET

Q1.02

LATCH

IC 1

&i>

LATCI

IC2

V\Y \\

DECOCeR

re 6

RAM BACKUP

ji'l'lT^

CPU B0>

$»

CoN-

TKXLIft

337

GATE

G20 »BUFFtK

a18

BPF

ICI3 MPF

G22 (accent) '

(9 20 21 22 23 24 25 26 27 2B QDEC.8,1981

VBOARD CONTROL BOARD IfLED BOARD j

cose _^CW«fL

IC3I|D3l.g|

vcosc

LCOSC[_

IC9

/""CONQA

VLEVEo

MIA

IC8

[CB>— ENVELOPE

03 -i

CB0SC1

IC4

GATE

CB 0SC2J

IC4

SATE

BPF

IC5 cCB. CLAVES N

LEVEL /

MIX

ACCENT

UKVCU

CR-8000

BLOCK

DIAGRAM

\h£>— HC OSC cwmK

021.32

\^>-

©H

MCOSC

:c<?

LCOSC

IC9

ILEVEL )

ENVELOPE

03I

--M^>-»<Th CBOSCt I&ATE _

US^ 1

IC4 IL*iJ L

GATE

CB OSC?

IC4

SATE

Q5 LP BPF

ICS

ACC

001,025 "® (volume )

CU4VES

osc

aa.Q<?

cCB.CLAVES

LEVEL .

MIX

IC5

(accent)

icr

M'JTINlG

AM. 31. 32 /PROGRAM "\

VMODE )

&>~ REVERB

fNVELOPE

Q40.P4-I

ACCINT

HOLDER

SAWTOOTH

ewelope

Ki6,aJ3

GATE

*2<?

VCA <&

I00"

aINSTRUMENT

SELECTOR

/HCP \

ILEVEL J

VOICE GENERATOR BOARD

CR-80<

BLOCI

DIAGR

.8,1981

cpu re

cpu rd

uWRITE U~LT READ i_r

CPU BOARD

IC1 LATCH CPU ROARD

IC2 LATCH COTROL BOARD

IC1, 2

CR-5000/8000

li? 20 21 22 23 24 25 26

CPU BOARD

aic2, pin 12 Inr

BCPU BOARD

IC10, Pin 8

CPU BOARD

-1 cycle -

IC6, Pin 5

uir

CPU BOARD ._, ,_, „_,, ,„_

ic6 -^«^jTirinriTL

CPU BOARD

IC6, Pin 3

CPU BOARD

IC6, Pin 2iun

CONDITION

PANEL CONTROLS

BANK 1LED "ON"

(ALL THE REMAINDERS "OFF")

(or PCWER ON, RHYTHM STOP)

Fig. 2

CIRCUIT DESCRIPTION

SWITCH SCANNING

CPU holds one of switch matrix rows low through LATCH IC1 and DECODER IC6.

Exp. When Sll closes while pin 4of IC6 (B in Fig. lj is held low, pin 14 of BUFFER

IC1 (A in Fig. 1) which is pulled up via Rl ,becomes low. This low is read by CPU

through data bus.

CPU continues this sequence for the remaining 7matrix rows ((|), Fig. 2).

Once rhythm starts, time interval between switch scanning varies to Tempo Clock rate.

LED DINAMIC SCANNING

To light LED that is on, CPU selects matrix row and column where the LED is connected

diagonally.

In the above example Dll has been on, CPU fires LED driver Ql through LATCH IC2 in

sympathy with low at B in Fig. 1((a) and (5) in Fig. 2.)

Lengths of lows and intervals between lows in Fig. 2ulso vary greatly with controls

setting and rhythm tempo.

VOICE TRIGGER SIGNAL

CPU delivers trigger signals (negative going") to individual VOICE Generators.

Trigger signal goes negative at the falling edge of tempo clock and stays low until

the next falling edge of the tempo clock. That is, width of trigger signal is equal

to period of one clock signal. The maxima trigger signal rate is 24 clocks :(J>

)

EXT TRIGGER Derived from LATCH IC1 on CPU board, "hey are also negative going

and the pulse width is equal to that of tempo clock.

RESTART

CPU reads INT terminal (not in use for interrupt application) every 3ms and ,when

INT is high, resets internal counter to revert to onset of ameasure.

Tf monost.able (1/6IC6. C47 and RS9) output is high for aperiod shorter than 3ms or

CR-

)E GENERATORS

tvoice generators are designed based on afashion

ilar to those detailed in the circuit description

the TR-808 Service Notes which is expected to be

srenced to as necessary. Exceptions are Cymbal and

Shot. Below brief comments on individual voices.

circuit consists of two bridged-T networks,

Two oscillator outputs of

frequency are summed at B'.

gated at choppers.

HCP

HCP sound is accomplished

lating white noise with ss

waves derived from IC6.

ohas two bridged-T filters for drum sound, in

Ltion, noise generator for snare sound.

IT:

Iged-T networks in these stage include two diodes

:heir RC constant loop. The diode changes con-

sing rate in proportion to sound amplitude passing

)ugh the network, changing filter characteristic,

3shifts filter response curve (frequency) along

id contour. Pink noise is combined with this out-

to simulate reverbration.

1C. HC

)based on Bridged-T. HC output is clamped on D31

D32 to have multiple harmonics to emphasis highs.

)HH. CY

combined square waves from Shmitt triggers

are gated at choppers with the contour

oed by respective envelop generator outputs.

RAM

CR-8000 only

ALE

ICIO

P27

RESET

DATA BUS 81 1

<>^2

IC9

LATCH

IC8 IC1

JADDR2S3 1

RAM

IC5 I/O

V."R CZ -

1. .

•"Y >— L/3IC3

RESET

lg six Schmitt triggers, two are used which

reset by an RS trig fed through Q37. The

:t rising edge of two outputs are synchro-

id to each other to eliminate unsavory sound

;he very first of RS note.

NOTES:

P27 -high during RAK access iny

CE -high during power off

CR-5000/8000 DEC.8,1981

outputs of different

summed at BPF after

;rs.

:complished by modu-

>ise with sawthooth

'rom IC6.

ACCENT

Sounds passing through VCA IC7 are

accentuated simaltenously when an

accent pulse is applied to Q41 with

its amplitude determined by VR8

setting.

C(CLAVES)

The circuit is designed based on conventional R-C

phase oscillator.

-G-

IC1

iJJ

I/O

CFO RD

CPU WR

RAK CE —

•1 0.5-0.6sec

RAK VR .~LT

arrrox. Ies

"LT JZZZ

_jri ',—

L-<»-ii|«r-n

rower ON o

Power CFF

RESET

RAK accessing

power off

Storage for programmed rhythm patterns are provided

for the CR-8000. The memories are maintained by

backup batteries (three 1.5V dry cells).

The ten address bits are required to access to a

memory location on 1024 words by 4bit RAM uPD444;

8bits are latched into IC8 by ALE and 2bits into

IC1 (also used for switch scanning).

DEC.8,1981

//PD8049C/^PD8048C

SINGLE COMPONENT 8-BIT MICROCOMPUTER

Top View)

^>r

XTAL 2o-

RESET O-

SS O-

Int O-

£A ©-

RD O-

PSEN O

WR O

(OV) V,s o

-0 Vcc(*5V)

-O Tl

-O P27

-O P26

-O P25

8049

2Kx8 ROM

128x8 RAM

8048

1Kx8 ROM/EPROM

64 x8RAM

-5V)

-O PROG

-O P23

-O P2«

-O P21

-O P20

//PD8049C

BLOCK DIAGRAM

PIN NAME PIN NO. FUNCTION

T0 1TEMPO CLOCK IN

Tl 39 START/ST0F SIGNAL IN

IKT 6RESTART SIGNAL IN

DATA BUS 12-19 SWITCH SCANNING OUT/IN

LEDs LIGHT OUT

TEMPO LED, TRIG OUT

MEMORY READ/WRITE (CK-S000 only)

PORT 1TRIGGER OUT FOR VOICE GENERATOR

P10

Pll

P12

P13

P14

P15

P16

P17

CYMBAL

HI TOM

OPEN HI-HAT

LOW TOM

HI-HAT

SNARE DRUM

BASS DRUM

ACCENT

FORT 2TRIGGER OUT FOR VOICE GENERATOR

P20

P21

P22

P23

P24

P25

!??

HI CONGA

KIDDLE CONGA

LOW CONGA

COWBELL

CLAVES

RIM SHOT

HAND CLAP

8048

»4«wonos

PROGRAM

MfUOMV

8049 WtttrOAOS

OAtA

MlMOAV

»6lT

TiMCR/

IVINT COUNTCM

UPD8049C-159

UPD8049C-232 (improved

version)

The following program bug

is eliminated in the -232

version.

Condition

SHUFFLE ON with alternate

rhythm patterns selected.

INTRO/FILL IN is pushed

after the termination of

first measure pattern.

When INTRO/FILL IN part

ends, CPU delivers rhythm

pattern data for the first

measure but replaces the

first step data only with

the one for the second

measure

This is perceptive in

RHUMBA. BEGUINE or

Andere Handbücher für CR-5000

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