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JAN.6,1982 (NOV. l, 1983 2nd printing) 



TR-606 



TR-6Q6 SERVICE NOTES 



First Edition 



Bottom case N-614 (2201061400) 



Terminal board N-125 (2345012500) 



SPECIFICATIONS 

O Memorized Rhythm Number 

32 Basic Rhythms 

(16 X Pattern Group I & II) 
O Step Number/1 measure 

1 ~ 1 6 steps 
O Rhythm Track 

64 measures x 7 tracks 

256 measures x 1 track 

(Continuous Maximum 256 measures) 
O Sound Source 

Bass Drum (BD) 

Snare Drum (SD) 

Low Tom (LT) 

High Tom (HT) 

CYmbal (CY) 

Open Hi-Hat (OH) 

Closed Hi-Hat (CH) 

ACcent (AC) 
O Control Switches, Buttons and Indicators 

■ MODE Selector 

(Pattern Write, Pattern Play, Track Write, 
Track Play) 

■ TRACK/INSTRUMENT Selector 
(ACQ, BDlU, SD[3], LT[4], [5]HT, [6]CY, 
[7]OH,[8]CH) 

■ TEMPO Control 
( J = 40 ~ 300) 

■ INSTRUMENT Mix Control 
(ACcent, Bass Drum, Snare Drum, L.H. 
Tom, CYmbal, O.C. Hihat) 



■ POWER Switch/VOLUME Control 

■ CLEAR/RESET button 
PATTERN CLEAR 

D.C. Setting 
bar reset 

■ RUN/STOP button 

■ BATTERY Check/RUN Indicator 

■ SCALE Selector 
(1,2,3,4) 

■ FUNCTION button 
Last Step Setting 
Scale Setting 

Bar Number, (Be sure the bar number of 
•S-,D.C.) 

■ SELECTOR Switch x 16 
RHYTHM Selector 
Designated Bar Number Switch 
DEL, INS switch 

Setting the Last Steps 

■ Indicators 

■ Pattern Group button 
Group Selector 
Setting the -S- 

■ Pattern Group Indicators 

■ TAP button 
Write/Next 
TAP 

Step Re-set 
D.S. button 
) Connection Jacks 

■ DC 9V x 1 

AC Adapter-jack (BOSS ACA Battery 
Eliminator) 



O 



■ Output X 1 

• Regular-jack 

• Output level 

(POWER Switch/VOLUME Control; MAX, 
Instrument Mix Control; Center) 
2 Vp-p (ACcent; MIN) 
6Vp-p (ACcent; MAX) 

• Output Impedance 
1 kn 

■ Headphone x 1 

• Stereo-jack 

• Conformity Impedance Sfi ~ SOn 

■ TRIGGER 0UTx2 

Mini-jack (HT, LT; +14V, 20 mSec pulse) 

■ Sync X 1 

DIN-Connector (for CSQ-600, MC-4) 
1: RUN/STOP, 2: GND, 3: CLOCK 

■ INPUT OUTPUT selector x 1 

■ RUN/STOP X 1 
(DP-2) 

Power 

Battery 6V (UM-2 Size (C) R-14 or equal 

battery x 4) 

(AC Adapter: 9V) 

Consumption Current draw 

70mA (MIN) ~ 150mA (MAX) 

Dimensions 

300(W) X 146(D) X 55(H) mm 

Weight 

1.2 kg 



Battery cover N-623 (2202062300) 




Battery holder N-624 (2202062400) 



Terminal spring N-126 (2345012600) 



Main board ass'y 0P31 26-050 (731 2605007) 



Bottom case N-614 (2201061400) 



® 






KnobN-198 

(2247019800) 

SwitchSRM-1018 

(13119705) 

Dust cover N-506 

(2224050600) 

KnobN-194 

(2247019400) 

Pot. K161100FAE IMC 

(13219333) 

Dust cover N-506 

(2224050600) 

KnobN-192 
(2247019200) 
Switch KHC-10901 
(13129715) 

LEDGL-3AR-2 
(15029109) 



KnobN-191 (2247019100) 
Switch KHC-10901 (13129715) 



Knob N-193 (2247019300) 
Switch SQP-24P-22PS (131590504) 
Dust cover N-1 1 5 (222401 1 500) 



Top case N-613 
(2201061300) 



Knob N-1 95 (2247019500) 

Pot. K161B0023 lOkB (13219330) 



Knob N-1 95 (2247019500) 

Pot. K161B0023 50kB (13219331) 







'mmmtmimmimM 



rrs 



# 



^ C6J 



® 



Knob N-1 98 (2247019800) 
Switch SRM-1034 (13119303) 
Dust cover N-506 (2224050600) 

Knob N-1 94 (2247019400) 

Pot. VM1 1 R-851 A-5M1 41 1 ( 1 321 9334) 

Dust cover N-506 (2224050600) 

LED GL-3AR-2 (15029109) 



KnobN-191 (2247019100) 
Switch KHC-10901 (13129715) 



SCREWS ®-® 3 X 10mm Bi , Fe, Cr, Binding, Self tapping 
SCREWS (®-@ 3 X 18mm Bi , Fe, Ni, Binding, Self tapping 

BOTTOM CASE REMOVAL SCREWS: 0)-(D 



I**— 



ij k3 



*J- -U 1 ' Li kJ' • hJ:- 



Sub panel N-275 (2221027500) 



Adaptor jack 

HEC 0470-01-230 (13449706) 



Jack HLJ0305-0 1-030 (13449218) 




[^Roland 



1983 E-2) Printed in Japan AH-2 1 



Jack HLJ0305-0 1-010 (13449217) -" 






Bottom case 

N-614 (2201061400) 



-JackSG-8026 (13449401) 



-Jack HLJ 0305-01-030 (13449218) 



"— Switch SSFZ-22-07 (131 591 1 4) 
-Din connector TCS 0707-01-010 (13429607) 



TR-606 



JAN.6,1982 



^^nnnnnnn 






/ U U U U U U U 7 

IVIC14001BCP 

Quad 2-input NOR Gate 



NJM2904 



Vol C 
Vi„-, 2C 
Vi„^i 3|I 
Vee 4[I 



"vy 




I|8 Vcc 

U? Vo2 

:]6 V;„-. 

:]5 vi„-2 



BLOCK DIAGRAM 




1 








s 

D 
C 

n 




5 














1 








1 




s 



c 

R 


Q 

5 














1 
ss - '"'" 


14 
7 





/-^nnnnnnn 






/TJ UU U U CJ U7 



TC4011BP 

Quad 2-lnput NAND Gate 



LA4140 




3O Hi J-T 



30 



/O «6 



.F¥¥¥¥¥irFir 



MC14013B 



DUAL TYPED FLIP FLOP 



TRUTH TABLE 



INPUTS 


OUTPUTS 1 


clock' 


DATA 


RESET 


SET 








_J~ 














1 


_/" 


1 








1 





"V^ 


X 








Q 


Q 


X 


X 


1 








1 


X 


X 





1 


1 





X 


X 


1 


1 


1 


1 



X » Dont C»r« 
t < L«v«I Chang* 



o n n n n 



I^ 



^ 



u u u u 



- +_ 



<7/ 



IN 
//PC 4558 C 



AN69I2 

Quad 
Comparator 



(+5V)VccO 



0UTPUT2[T> 

OUTPUTld 

V-[3 



+ 



I. [6 



l£hL 



i30UTPUT3 
3 0UTPUT4 

Hgnd 

01 I". + 

gi,. - 

3IK. + 

Ur,. - 



HD14584B 



Hex Schmitt Trigger 



■•E 
'•E 



E^«<F 



VssE 



XV 



3 
3 



0,[T— o<^ 



E-^F 



-fe>o— To] 



]7], 

loj '- 
I ^^' 



fiPDSSOO 

(Top View) 




OCLo 

OVss(OV) T£ 

OPB3 

OPBz 

OPBi 

OPBo 

0PA3 



TEMPO 
CLOCK 



.-^ 



T.FF 



■« OPA2 

OPAi 



OPAo 
OPh 
OPIi 
OPIo 
OPH3 



♦OPH2 
OPHi 



OPHo 
OPG3 
OPG2 



•HDPGi 
OPGo 




INTEEEUPT 
CLOCK 



STEP LED>- 
STEP 5M/f 






PUNCTIOM 



STAIiyS 



1L_ 



BUFFEE 
& ^ATE 



b 



P^ 



PH 

CPU 

PC 



CPU CLOCk 



PECODEZ 



:s>: 



^ 



1 



/iCCEAyr 



( )^ MEHOKT 






b 



PIN CONNECrOg 



PflTfl 



^/IT6 



■SOUWO 
; (J-ENEjeWrOE 



Thick line indicates 
CPU controlled circuits, 
thin line Voicing. 



i 



jk MflSTEE OUT 



<Jl 



MULTI OUT 



BLOCK DIAGRAM 



MPD650C-085 FUNCTIONAL DESCRIPTION 





No. 




PH 
(PortH) 



1 
2 
3 


26 
27 
28 
29 


Scanning signal outputs to switches 
[Switching signal outputs to STATUS BUFFER & GATE 


PA 
(Port A) 



1 
2 
3 


33 
34 
35 
36 


[Switch scanning signal inputs 
STATUS (TEMPO CLOCK. START/STOP. 


TAP) inputs 


PB 
(Port B) 



1 
2 
3 


37 
38 
39 
40 


Inputs from STEP Switches (RHYTHM SELECT Swtiches) 


PG 
(Port G) 



1 
2 
3 


22 
23 
24 
25 


Drive signals to STEP LEDs 


PE 
(Port E) 



1 
2 
3 


12 
13 
14 
15 


i/n 

1 Memory bank 
[select 

MEMORY ADDRESSES 
ou *u~ These pins use CE from 
m^riTc ADDRESS Decoder to 
""'"'^" select cells in RAM to 

be accessed 

Step 
numbers 


CM 
OH 
CY 
HT 

INSTRUMENT DATA 
These data need 
COMMON TRIG to 
trigger Sound Generators 
being designated 

LT 
SD 
BD 
AC 


PD 
(Port D) 



1 
2 
3 


8 

9 

10 

11 


PF 
(PortF) 



1 
2 
3 


16 
17 
18 
19 


PC 

(Port C) 



1 
2 
3 


2 
3 
4 
5 


Data Inputs/Outputs 


PI 
(Port 1) 



1 
2 


30 
31 
32 


Memory WE 

Memory CE (associated with PE-2, 3 at ADDRESS DECODER) 

Trigger Pulse (INSTRUMENT) output 



JAN.6,1982 



TR-606 



TR-BOB 



TEMPO 





BLOCK DIAGRAM 



W 



r 



OUTPUT 



o 

IN PUT 



o sc 

IC 1, Q 2 



DIVIDER 
IC 2a 



r 



-AV^— 



MONO 
MULT I 
C/f,R7 



,1 




DFF 
DIVIDER 
IC 2b 



r 



t-o (^ 
-o o 



ho O 
f-O O 



-O 



-O 



-o 



-o 



-O Q -O 



■-0 O -O 



SCHMITT 

TRIGGER 

IC 1 



s 






LED 

DRIVER 
0401,402 



TAP 

o 




SWITCH BOARDI 



-O 



-O 



-O 




EH 

o 



A 



-o 



K — 

EH 

W I 

O 

pqs 

-d- 



'i BAR ClEA 

h I- I- 



TAP 

PULSE 

SHAPER 



[hhJ 



STATUS 

BUFFER 

GATE 

IC 3 

Q5,7,8 




EH 

■^ K 

ty o 

00 » 

« 
O 



GATE 

041 n 



11 



CPU 
CLOCK 

IFT 



INTER 

-RUPT 

CLOCK 

IC 1 



MICRO 
PROCESSOR 

IC 4 



C MOS 
MEMORY 

IC 7,8 



WHITE 
NOISE 
031 



ACCENT 
09,10,11 

LEVEC 




014,15 



BD 



osc 

IC 15 A 



JI-EVElI 



OSC 

IC 15 B 



J 



n 



017 W 

[attack M ENV 



016 



VCA 

30 



*| OSC 

IC 10 A 



HPF 

32 
TZ 



SD 



J 



WN. 




307 LX 



\^0309 



LPF 



II 



I 



VCA 



'0310 



l^ 



". ^ ENV] 

.. |0305 , 306 I 

^XA OSC U I I 

301 I IC 9 B I I 

302 \ I 1 1 

, i 1 SUB BOARD I 

attack ^^ 1^ 'I 

308 HT J 



LLEVEL 



COMMON TRIGGER 



-I 



> 



l^ 



LED DRIVER 
0413, 414 



(SWITCH BOARD) 



— *{X)028. 



OSC 



OSC 



OSC 



OSC 



OSC 



OSC 



BPF 

IC I5B 



ENVi_ 

35 



VCA 

Q 39 



VCA 

38 



BPF 

C ISA 



HPF 

040 



HPF 

IC I2B 



LEVEL 



CY 



IC 



MONO 
MULTI 



034 



MONO 
MULTI 



Q33 



CMOS 

1 5VX4 *'^*""'^ 
. . , . BACK UP 



A 




„ _ A 




A 


1 


L 












i 


Wl 


T^ 
















A 


5V 

045,46 




I5V 

MC I02C 




6v 

042 






\\ 








\ 












IPOWEP supplyI 


J 



A.C. 
lAOAPTOR 
IN 



MIXER 
ICI4A 



IC I4B 



OUTPUT 

— vr 



fr 



l^ 



HEADPHONE 
AMP. 

IC 13 



=^1 



HP. OUT 



II 



"A/ 



(SUB BOARD) 



JJ 




OH 



VCA 

37 




ENV 

D3I, C42 



T,-; -% 



CH 



TR-606 



JAN. 6, 1982 



TM2 : 2201CB ^r84i.-t 



R247>- SURWC6 MOUNTING 20 W -^ >ZSloi 






iC26 

0.0 I 



7?32 35K 



'Vy' ■ /a>\ P r V. 



/VT PR 
CLO 




a 



MAIN BOARD 



Vcc 



VCo 
I 



PF.5 
2 



2 

I 




?P3 

2 

/ 




/ 
1 



IC 4 

[JPD650 
C-128 



2 ^-^VV^ 

7?77 5.3K 












IC7 
PPD444C 



10 

. WE >- 



C EP 

;^ 4 /^ ^ /6 2 /^ / 



IC8 
[ipD444C 



7 6 



WE >- 

It i lb 2 in I 






QI2 






< 



•47K 



'Mi 




4.1 KX 4- 




IC6 

HDHOIIBP 









: 4J7K 



.D^ 




55 



<?27 43+- 



ACCENT 



+ I5H +I5H +I5H 



■4.7Ar 



QIO 



Q9 

VR2 
JOK 



,VR2 
R^ tlOKB 

22K 






tr 



6:<* 



Pattern Group 



■R42 
33K 



R4-3 
:4.7K 



II 



B D > 



^ D 



Er> 



[hT> 



C Y > 



TRtG> 



O H> 



[cIh> 



^^^ 



AC 
LEVEL 



■R44- 
4-7 K 



JAN.6,1982 



TR-606 



MAIN BOARD 



+ I5G 



HT 



LT 




ALL NPN TRANSISTORS ON THE MAIN BOARD 
AND THE SUB BOARD ARE 2SC9if5(P) 

ALL FN? TRANSISTORS ON THE MAIN BOARD 
AND THE SUB BOARD ARE 2SA733(P) 



"216 ALL NPN TRANSISTORS ON THE SW. BOARD 

IflSF 

ARE 2SC2021 (R) 



ALL PNP TRANSISTORS ON THE SW. BOARD 
ARE 2SA937(Q) 






CLS'D HIHAT 



IC 16 HD14584BP 

14 PIN ; +5V 
7 PIN ; G N D 



TR-606 



J AN. 6, 1982 



COMPONENT SIDE 



it. 



0303 



n|n1n 



< ♦ « la 

O N <» Q 

"^ 2 D *^ R396 fl 

^ « tc Q U-2f jO 



i 

J R327 



111 



n (0 <A 

— n m 

rt (*) f) 

U K « 
i 

T 



2 in » 



on i 



■ C325 



0304 



(PCB 29I-494C) 



Jj) R30f 

;2)^ 



-llClillO, 



„Q30tCR305 ., 

101 Ifl 

R3Q4 O302 



lo 



XT 



R3t3 



f*328 



(TV* 



'TOf of* 



la:R3i4 



C30t 



Q30$, , . 

an 

wis 



R3t9 

C303 cs'oe 2 121-12 



gtllil TSS^F**^ ^^ 

'''' iDlli 



R35a 



^4 



-HH- 
C307 



iiiiiia 




STd3l4 



R34S 



C3t9 



t O 



C32a 

-Ht— 



It 



R343 



R344 



i0304" 

^ ST l^TSt 



o 

- C 327 

R354 



R3S5 +_5?f ^ 



01 030 




SUB BOARD 
OP31 26-060 
(7312606006) 
(pcb291-494C) 



MAIN BOARD 
0P31 26-050 
(7312605017) 
(pcb 291-4930) 

R-C HETWORK 

following RC pairs are 

replaced by R-0 network, 

EXR-P 4.7k0.001 

P/K 13910111 

w/ Serial Humber 161000 

R97. 0110 
0329, 0330 
R305, R30S 



SWITCH BOARD 
0P31 26-040 
(7312604003) 
(pcb 291-4920) 



SW6 



SW7 



SW» 



JAN.6,1982 



TR-606 



FOIL SIDE 



eseoj 



fti 01 2 
O n (n 
31 » O 



n> tt PI 
n (n - 

» u 



rti <* * f 



3S£n 



o i2 



+. iiDiinrf5iTMi 



8se3 ^ aae« 






To 



AS 



^) 10 10 

Minim 






sseo 



StSOt 



Ml (■> I 



■^oco ;e « eteo * 






xr 



O 



a^Cft 







e^tR 



8t£fl 

aoco eoeo 
rocD 



doeo 
Jrf^aoeD 

+ D 



Hie.0 



a 
toco 



I'tcwa 



aiilOIi 






aoenoioeo, 'o^? 

S 



ililipj lOli 



© 



oflAoa sua 



eoeo UJH 
oeo 10 




o 
g 

rn~i 
oczi 



2SC536F 
2SA733P 
2SC2021R 
2SA937Q 



M we 



eiwe 



SIW2 



TR-606 



JAN.6,1982 




ADJUSTMENT 

CPU CLOCK 

Connect scope to TP-1 . 
Adjust IFT1 for 2.2ius/cycle. 

INT CLOCK 

Connect scope to TP-2. 
Adjust TM-1 for 1.8ms/cycle. 

TEMPO CLOCK 

Connect scope to TP-3. 

Set TEMPO knob at FAST. 

Adjust TM-2 for 8ms/cycle. 

Confirm that period of 1 cycle becomes 

65ms when TEMPO is set at SLOW. 

NOISE GENERATOR 

Connect AC voltmeter to TP-4. 

Adjust TM-4 so that the reading is 130mV (rms). 

ENGINEERING CHANGES 



with S/N 


what is changed 


reason/purpose 


087000 


R9 82k to 150k 
RIO 390k to 150k 


to extend INC CLOCK 
adjustable range 


091500 


D44. D45 add (foil side) 
CI 06 omit 
R23 33k to 10k 


to ensure POWER ON 
reset operation 


092000 


R247 add 


092100 


D38 foil side to 

component side 


PCB re-layout 


114700 


TM-2 22k to 100k 
R12 100k to 47k 


to extend TEMPO CLOCK 
adjustable range 


148400 


HD14011BPtoTC4011BP 
HD14013BPtoMN4013B 


availability of the ICs from 
supplier 


Q45 2SC536-F omit 
D40 RD6.8EB3-Tto 

RD6.8EB2-T 
R239 5.6k to 27k 


to ensure operation 
reliability on lower DC 
supply 


TM-2 100k to 220k 


to extend TEMPO CLOCK 
adjustable range 


R226 330k to 680k 


to shift the generator's 
frequency relative to others' 
for better CY sound 


159500 


IC10 NJM2904Dto 
iuPC4558C 


for more NOISE gain margin 
(higher, distortion-free 
output) at the sacrifice of 
battery drain 



PARTS LIST 

PANEL 

2201061300 Top case 

2201061400 Bottom case 

2202062300 Battery cover 

2202062400 Battery holder 

2221027500 Sub panel 



N-613 


top 


N-614 


bottom 


N-623 




N-624 




N-275 





SOCKET 

13429607 
13449218 
13449217 
13449401 
13449706 



Din connector 

Jack 

Jack 

Jack 

Adaptor jack 



TCS0707-01-010 Sync 

HLJ0305-0 1-030 MONO 

HLJ0305-01-010 STEREO 

SG8026 MINI 

HEC0470-0 1-230 AC adaptor 



TRANSFORMER COrL 

12449217 I FT coil 

12449507 



SWITCH 

13119705 
13119303 
13129715 
13159114 
13159504 



SRM1018 

SRM1034 

KHC10901 

SSFZ-22-07 

SQP24P-22PS 



SEMICONDUCTOR 



LSI 

15179119 
15179305 

IC 

15159101H0 

15159104 

15159105 

15159303H0 

15189113 

15189105 

15199509 

15189134 

TRANSISTOR 

15119105 

15119121 

15119602 

15119806 

15129102 

15129108A 

15129602 

15129121 



MPD650C-128 
MPD444C 



S74230 (yellow) 
MC102C 



rotary 

rotary 

push 

slide 

slide 



CMOS CPU 
CMOS RAM 



CPU clock 
DC-DC converter 



TRACK, INSTRUMENT 

MODE 

All switches on the switch board 

SYNC in/out 

Pre-scale 



HD14001BP Quad 2-input NOR gate 

HD14011BPor TC4011BP Quad 2-input NAN D gate 
HD14013BP or MN4013B Dual type D flip-flop 
HD14584B Hex Schmitt trigger 

AN6912 Quad comparator 

MPC4558C Dual op amp 

LA4140 AF Power amp 

NJM2904D Dual op amp 



2SA733(P) 
2SA937(Q) 
2SB647(C) 
2SB596(0) 
2SC536(F) 
2SC945(P) 
2SD667(C) 
2SC2021(R) 



Selected (NOISE) 



LED 



15029109 


GL3AR2 




ODE 

15019120 


1S2473 


Si diode 


15019209 


10E-2 




15019122 


1S-188FM 


Ge diode 


15019655 


RD6.8EB-3 


or 15019656 RD6.8EB2-T 


15019653 


RD15EB-3 




15019126 


1SS-133 


Si diode 



POTENTIOMETER 



13219333 
13219334 
13219330 
13219331 
13299114 
13299117 

RESISTOR 

12559708 



K161100FAE-IMC 

VM1 1 R 851A-5M141 1-50KA 

K161B0023-10KB 

K161B0023-50KB 

H1051A013-10KB 

H1051A019-100KB 



master vol. & power switch 

tempo 

AC level 

BD, SD, L/HT, CY, 0/C HI HAT level 

SR 19R trimmer 

SR 19R trimmer 



FRNB2.7n 



CIRCUIT BOARD ASSEMBLY 



7312605017 
7312604003 
7312606006 

OTHERS 

12199503 

2219028700 

2343097600 

2345012500 

2345012600 

2224011500 

2224050600 

KNOB 



MAIN BOARD 
SWITCH BOARD 
SUB BOARD 



PCB Holder 
Holder 
Flat cable 
Terminal board 
Terminal spring 
Dust cover 
Dust cover 



2247019300 Knob 

2247019400 Knob 

2247019500 Knob 

2247019100 Knob 

2247019200 Knob 

2247019800 Knob 

R-C NETWORK 

13910111 EXR-P(1000P.4.7K) 



Fuse resistor 



0P3 126-050 
0P3 126-040 
0P3 126-060 



LCBS-12NS 
N-287 



N-115 
N-506 



N-193 
N-194 
N-195 
N-191 
N-192 
N-198 



(PCB291-493C) 
(PCB 291-492C) 
(PCB291-494C) 



Potentiometer for master vol. & tempo 

Battery + side 

Battery — side 

slide switch 

master vol., tempo, rotary switch 



pre scale 

master VR & TEMPO 
instrument level 
RUN/STOP, TAP 
step number 
rotary switch