BOSS DR 220A E SERVICE NOTES

Page 1

OCT. 1986

@3055 DR-220AIE

SPECIFICATIONS

Memory Capacity

Tempo
Output
Noise Level

Power Requirements

Current Draw
Battery life
Dimensions

Weight
Accessories

Options

: 32 Preset Rhythm Patterns

32 User's Programmable Rhythm Patterns

DR-220A/E

SERVICE NOTES)

First Edition

Sound Sources:

DR-220A

Songs 128 bers x 8 (with Song Chain: 256 bars)

: J = 40 to 250

: Max. Level 2.6 Vpp 2K9

: Less than -80dBm (lHFA)

: 6V DC (Batteries SUM-3 x 4)

or AC Adaptor BOSS PSA-100, 120, 220 or 240

: 30mA DC at 9V

: Approx. 30 hours (SUM-3)

: 239(W) x 75(D) x 31(H)mm
9-7/16 x 2-15/16 x 1-1/4 in.

: 3509/1202. including batteries

: SUM-3 dry cell batteries x 4
BOSS Original Case x 1

: Connection Cord PJ-1
AC Adaptor BOSS PSA series

DR-220E

Bass Drum
Snare Drum

Closed Hi-hat/Open Hi-hat

Rim Shot/Hand Clap

Hi Tom/Mid Tom/Low Tom
Crash Cymbal/Ride Cymbal

Accent

Electronic Bass Drum
Electronic Snare Drum

Closed Hi-hat/Open Hi-hat

Cowbel l/Slap

Electronic Hi Tom/Electronic Mid Tom

Electronic Low Torn
China Cymbal/Cup
Accent

Battery Cover

DR-220A (2202576800)
DR-220E (2202576900)

DR-220A (2249512600)
DR.220E (2249512700)

DR-220A (2202577000)
DR-220E (2202577100)

_-Bottom Case Assy
DR»220A (2201568900)
DR-220E (2201569000)

92 . 230.1%
~-alu-- ants-(941413014941 a
Jack mini _ Switch 553852031A
868026 (1315932900)
(1344940100) Knob
(2248512500)
___Jacl<
HECO470-01-630
(1344971100)
- LCD Top Case Jack Mono
(1502943900) DR-220A (2201568700) dark gray HLJ0520~01-110
DRA220E (2201568800) silver (1344912500)
P l
l- ___ 1:] _____ F__M_Y__:Y___m__l g 1
l r: mm am keen! I :
{mm m - - m to»: ca on 1 g @
|
,- 1:1 El .., 5., l
L sunvl star/Como meal D
_____ F-________- _____
_ |
l
1- Display Window - Rubber Switch (28 Contacts)

Knob

DR-220A (2248512300)
DR-220E (2248512400)
Pot. R820411AA-100KB
(13339349)

nnnnlllllm

Jack mini Stereo
HSJ 0922-01-1140
(1344942300)

PICTURE DR-220A

Illllllllibj

@Roland

Printed in Japan BD-2

DISASSMBLY

0 Place the DR~220 upside down
then remove the battery cover.

9 Remove 2.6 x 6mm P type tapping
screws (3 pcs) on the bottom case.

9 Turn the DR-220 over. Grasp the
1CD side of the upper case hand
then separate the cases as shown
in Fig. 1.

fiflfiifi

0 liEEléJJIIfrllit 33i077élifio

9 Fv-xml-istne 5 v Eya
Ezzexemm pat 21:2:th

e ,l-Jr-szCDiiuletsa MM)
filwllblaeL'r-zeFIr-zé
)Eéélfiilillfié.

Fig. 1

Battery Cover
2202577000 (DR»220A)
2202577100 (DR-220E)

Tapping Screw
2.6 x 6mm P type (3 pcs)

VOICING Board
7314230000 DR-220A
7314330000 DR-220E
(pcb 2292538700)

2 x 5mm Fe, P, Cm @- Knob

2248512500

Shield Cover
2225524300

Bottom Case
2201568900 DR-220A
2201569000 DR-220E

@- Knob 2248512300 DR-220A

2248512400 DR-220E

2 x 5mm Fe, P, Cm
(4 pcs)

SW BOARD
(7314231000)
(PCB 2292538600)

2

Rubber Switch
(A: 2249512600)

(E: 2249512700)
Rubber Connector

(2343532800)
Top Case
(A: 2201568700)

LCD (E: 2201568900)

(1502943900)

Display Window
(A: 2202576800)

(E: 2202576900) -:

Terminal Plate D
(2345516600)

Tarminal Plate B
(2345516400)

---Tarmina| Plate C

Terminal Plate A
(2345516300)

(2345516500)

Q

Page 2

OCT. 1986

PIN 115515. PIN DESIG. Pm 01514. PIN 0551111
1 415 21 40 41 on 61 Ifi
2 vss 22 05 42 vss 52 41115
3 A14 23 V58 43 RSIIJ 63 V83
4 412 24 no 44 c1<2 54 1140
5 413 25 115 45 cxo 55 041
5 47 25 01 45 cm 55 1142
7 4a 27 114 47 E1 57 043
a 45 25 132 411 an 66 D44
9 49 25 03 49 133 59 045

111 45 an RDHR so 82 70 D45
11 411 31 11111 51 as 71 047
12 vss 32 110115 52 vss 72 1148
13 44 33 v01) 53 a4 73 mo
14 415 34 1'50 54 137 74 049
15 43 35 152 55 as 75 04111
113 4111 55 Tel 55 4LEL 75 0411
17 42 37 mo 57 41511 77 4
18 ROMS as mm 53 cs 75 a
1g 41 39 x1 59 1111 79 c
2a 117 40 x2 50 GE 80 R4115

BLOCK DIAGRAM

DR-220A/E 1
IC DATA :
MBG70120
PIN ASSIGNMENT 1
1
64 41
TOP VIEW
25
24
PIN FUNCTIONS
114111 PIN x/o 11555111211011
vdn 33 -- powrzr supply +5v
73 .1
z __
V55 12 -
23 - GND
42 -
52 -
5:1 --
x1 39 1 xtsl terminal 12.414112)
x2 40 a
1151 51 1 reset 1aput (low active)
1151-0 43 o reset output (high active)
c110 45 0 30111111:
C141 45 0 external elnek output 251111;
C11: 44 0 3911525112 1
Cs 511 1 enlp select input ("venom "11"».11414)
1111 59 1 memory write request 1
oz 511 1 output enable 1
4151 55 1 low address laten enable 1
ALEH 57 1 high address latch enable
an 413 1/0
131 47 1/0
42 so no
a: 49 1/0
114 5:1 1/o sdderss / data bus (to CPU)
115 51 1/0
as 55 1/0 1
a7 54 no
ROMS 15 0 ROM saleet (law aetlve1
RAMS an 0 RAM saleet (high aetlve)
11111111 :10 o read/write ("11"=read. "L"=writel 1
4o 21
41 19
42 17 1
4:1 15
44 13 1
45 10
45 a 1
47 5 0 address hul (to CPU) 1
48 7 1
49 9
4111 15
411 11
412 4 1
413 5 1
414 3 1
415 l
415 14
no 24
111 25
112 23
1:3 25 1/4 data bus (to memories)
44 27
115 25 1
us 22
117 20
D40 54
I 1 o 12 bit sound data output
11411 75
4 77 4
11 713 o unux channel select
c 75 0
1111-1 :11 o ] 11111111 inhtht 1
150 :14 o trigger output channel a 1
152 :15 0 channel 2
MODE :2 I pulled down = 1111-2204 aade select
pulled up = 11111-2201:
on 41 1 puued down.aound data output node select
4115 52 1 pu1led doun.sddress Mt 15
Tel 36 1 pulled up
1'ch 37 1 pulled down 11c test
1cm as 1 pulled down

ICKO
TCKI

CS
ARIES

ALEH
ALEL

1305137

|

Voo

1

GENERATOR

TIMING

ADDRESS
SELECTOR

RST TCL X1 X2

T60
T62

ROMS

AO-AIG

00-07

RDWR

DAU'DAII

OM

-nm>
E

CPU No 1/0 115511; No 1/0 115515 NO l/O 05515 No 1/0 IJESIG
1 1/0 P41 21 o 322 41 0 s4 511/0 P10
#PD7514G'236 2 1/0 P411 22 a $21 42 - NC 62 a m
a -» x2 23 - 11c 43 o 53 m 0 P32
41111240520440 82647 vss
s-Av1c3250519450 51550 P31
PIN ASSIGNMENT
5-»VLc225051a45o $0550 P30
54 1 7 -- VLC1 27 o 517 47 1 11111 57 l Poe/s1
65 40 a o c0113 23 o s15 45 1 RESET 4: 1/0 Poe/so
9 0 00112 29 0 315 491 111 :41/0 Po1/s1x
10 o c0111 30 0 s14 50 - 112 70 1 POD/INIO
TOPV'EW 11 a com 31 0 s13 51 no P73 71 1/0 P55
12 o 531 32 0 s12 521/0 P72 721/0 P52
1:1 0 s30 33 » v01) 531/0 P71 731/0 P61
14 o 529 34 0 s11 54 1/0 P70 74 1/0 P60
150525350510550 P2275I/D P53
15 o 527 35 o 59 55 o P21/PTOUT 75 1/0 P52
17 o 525 37 o 511 57 o PZO/PSTB 77 1/0 PS1
15 0 s25 38 0 s7 58 1/0 P13 75 1/0 P50
19 0 s24 39 o 55 59 1/0 P12 791/0 P43
20 a 52:1 40 o 55 50 1/0 P11 501/11 242
PORT ASSIGNMENT
NAME PIN I/O DESCRIPTION
Vdd 33 v- power supply +5v
V55 54 -- c1111
V1c3 5
Vial? E I power supply for LCD
Md 1
CDM3 E
1 1 0 LCD common signal output
COMO II
s?1 12
|
:21 22
SEU 3"}
512 32 0 LCD t l I: t
S 34 segmen 513111! au pa
1 1
54 41
S3 43
| 1
50 46
XI. 4 CK). ( 25KHZ )
11111 47 1 external clock 1n cxz (390525112)
:11 4s c1101 30011112)
P73 51
1 1 0 key scanning signaI output
270 54
P13 58
1 1
P10 51 . .
P163 71 I key scanning data lnput
1
P60 74
P53 75
| 1
254 73
P43 79 I/O adresa / data bus
P42 so
P41 1
P40 2
P32 55 0 THIS OUT signal
P21 56 0 LED
P20 57 CS ( "I."=ROM. " "=RAM 1
P33 62 CE
P32 53 o 1111
231 55 4141
P30 65 ALE"
INTO 70 I THIS IN signal
RESET 45 I CPU FESE ( high active )
P03 57
1 I pulled down, lnput port, unused
P01 39
X2 3 - NC Xtal terminal for caunt clock. unused
CL3 50 -- NC NC terminal for system clock, unused
1NC1 23 »- NC
.NC1 42 - NC