Roland Dr. Sample SP-303 Operating and maintenance manual

SERVICE NOTES
Issued by RJA
Copyright © 2001 ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the written permission
of ROLAND CORPORATION.
Printed in Japan (0830) (NB)17059080E0
Mar.2001 SP-303
Contents
SPECIFICATIONS.............................................................2
LOCATION OF CONTROLS ..........................................4
LOCATION OF CONTROLS PARTS LIST ...................5
EXPLODED VIEW PARTS LIST .....................................6
EXPLODED VIEW ............................................................6
PARTS LIST........................................................................8
IDENTIFYING THE VERSION NUMBER..................12
SAVING USER DATA & RELOADING SAVED DATA ...12
HOW TO UPDATE SYSTEM SOFTWARE .................13
TEST MODE & RESORTING THE FACTORY SETTING ...14
ERROR MESSAGE..........................................................17
ABOUT THE SHAPING OF THE WIRING ................18
BLOCK DIAGRAM.........................................................20
CIRCUIT BOARD ...........................................................22
CIRCUIT BOARD............................................................24
CIRCUIT DIAGRAM(DIGITAL1) ................................26
CIRCUIT DIAGRAM(DIGITAL2) ................................28
CIRCUIT DIAGRAM(ANALOG).................................30
CIRCUIT DIAGRAM(SW).............................................32
CIRCUIT DIAGRAM(POWER).....................................34

2
Mar.2001 SP-303
SPECIFICATIONS
SP-303: Dr. Sample
●Maximum Polyphony
8 voices
●Internal Memory
Samples: 16 (8 samples x 2 banks)
Patterns: 16 (8 patterns x 2 banks)
●Memory Card (SmartMedia)
Samples: 16 (8 samples x 2 banks)
Backup: 112 (2 banks x 7 sets)
Patterns: 16 (8 samples x 2 banks)
Backup: 112 (2 banks x 7 sets)
* Only 8 MB to 64 MB SmartMedia with a power-source voltage of 3.3 V can be used.
●Maximum Sampling Time
Internal Memory (Times Approximate)
STANDARD LONG LO-FI
31 seconds 63 seconds 3 minutes 10 seconds
Memory Cards (Times Approximate)
Capacity STANDARD LONG LO-FI
8 MB 4 minutes 8 minutes 25 minutes
16 MB 8 minutes 16 minutes 50 minutes
32 MB 16 minutes 33 minutes 101 minutes
64 MB 33 minutes 66 minutes 202 minutes
●Sampling Frequency
STANDARD: 44.1 kHz
LONG: 22.05 kHz
LO-FI 11.025 kHz
●Pattern Sequencer
Maximum Note Storage
Internal Memory: Approx. 7,500 notes
Memory Card: Approx. 7,500 notes
(SmartMedia)
Resolution: 96 ticks per quarter note
Pattern Length: 1–99 measures
●Effects
26 types
Signal Processing
A/D Conversion: 20 bit
D/A Conversion: 20 bit
●Nominal Input Level
Input (mic): -40– +4 dBu
Input (line): -10 dBu
●Input Impedance
23 k ohm (line)
2 k ohm (mic)
●Nominal Output Level
Output (line): -10 dBu
●Output Impedance
2 k ohm
●Display
7 segments, 3 characters (LED)
●Connectors
LINE INPUT Jacks (L, R)
LINE OUTPUT Jacks (L, R)
Headphone (PHONES) Jack (Stereo 1/4 inch phone type)
MIC Jack
MIDI IN Connector
AC Adaptor Jack
Memory Card Slot
●Power Supply
AC Adaptor
120/230 V: Roland ACI-Series
230 (UK)/240 V: Roland ACB-Series
●Current Draw
1000 mA
●Dimensions
170 (W) x 241 (D) x 67 (H) mm
6-3/4 (W) x 9-1/2 (D) x 2-11/16 (H) inches
●Weights
850 g / 1 lb 14 oz (excluding AC adaptor)
●Accessories
Owner’s Manual English (#71890456)
AC Adaptor
(120/230 V: Roland ACI-Series, 230 (UK)/240 V: Roland ACB-Series)
Roland Service (information sheet)
* 0 dBu = 0.775 Vrms
* In the interest of product improvement, the specifications and/or appearance of
this unit are subject to change without prior notice.

3
Mar.2001 SP-303

4
Mar.2001 SP-303
LOCATION OF CONTROLS
fig.panel
6
2
1
7
8
11
13
12
11
10
9
15
5
3
4
14

5
Mar.2001 SP-303
LOCATION OF CONTROLS
PARTS LIST
No. Part Code Part Name Description Q'ty
102457512 J R-KNOB SFA BLK/LCG 1
02451945 9M/M ROTARY POTENTIOMETER RK09L12C 50KAx2(20MM) 1
213449645 JACK (PIN) YKC21-3049 (4P) RED/WHITE 1
313429672 MIDI JACK YKF51-5047 1
402452134 SLIDE SWITCH SLG-12-465A 1
513449720 DC JACK HEC2305-01-250 1
602452423 BOTTOM COVER 1
702451767 TOP CASE 1
802451823 PANEL SHEET 1
902451978 RUBBER SW EFFECT 1
10 02451845 RUBBER SW PAD 1
11 02451812 CARD COVER 1
12 02451956 9M/M ROTARY POTENTIOMETER RK9K111A 250KRD(25MM) 1
13 00569278 6.5MM JACK LGR4609-7100 2
14 02236489 FOOT 14.5x14.5 4
15 02457512 J R-KNOB SFA BLK/LCG 3
02457556 9M/M ROTARY POTENTIOMETER RK09K113A 50KB(20MM) 3

6
Mar.2001 SP-303
EXPLODED VIEW PARTS LIST
[Parts]
[Screws]
EXPLODED VIEW
fig_exploded.eps
No. Part Code Part Name Description Q'ty
102457512 J R-KNOB SFA BLK/LCG 4
202451823 PANEL SHEET 1
302451812 CARD COVER 1
440347767 LABEL SMARTMEDIA 1
502236489 FOOT 14.5X14.5 5
602452423 BOTTOM COVER 1
740344445 LABEL FCC CAUTION 1
871785956 PWB ASSY (EXG) 1
******** SW BOARD ASSY 1
902568590 LEAF 1
10 02451845 RUBBER SW PAD 1
11 02451978 RUBBER SW EFFECT 1
12 02451767 TOP CASE 1
13 02671190 RIBBON CABLE JWFV 5x125 - P2.0 1
14 02671189 RIBBON CABLE JWFV 14x125 - P2.0 1
15 02671178 RIBBON CABLE JWFV 13x150 - P2.0 1
16 02671167 RIBBON CABLE JWFV 11x125 - P2.0 1
No. Part Code Part Name Description Q’ty
a40451234 COIN SCREW M3x8 BZC 2
b40011312 SCREW 3x8 BINDING TAPTITE P BZC 7
c40011278 SCREW 3x8 BINDING TAPTITE P FE ZC 8
2
1
1
1
1
4
3
a

7
Mar.2001 SP-303
fig_exploded.eps
10
b
6
b
5
5
5
5
12
11
95
13
14
15
16
7
8
c
8

8
Mar.2001 SP-303
PARTS LIST
fig.part1e
SAFETY PRECAUTIONS:
The parts marked have
safety-related characteristics. Use
only listed parts for replacement.
SAFETY PRECAUTIONS:
The parts marked have safety-related characteristics. Use only listed parts for replacement.
QTY PART NUMBER DESCRIPTION MODEL NUMBER
Ex. 10 22575241 Sharp Key C-20/50
15 2247017300 Knob (orange) DAC-15D
Failure to completely fill the above items with correct number and description will result in delayed or even
undelivered replacement.
NOTE: The parts marked # are new. (initial parts)
MB –>MAIN BOARD ASSY, SB –>SW BOARD ASSY
CASING
#02451767 TOP CASE 1
#02451812 CARD COVER 1
#02451823 PANEL SHEET 1
CHASSIS
#02452423 BOTTOM COVER 1
KNOB, BUTTON
#02457512 J R-KNOB SFA BLK/LCG 4
SWITCH
#02451845 RUBBER SW PAD 1
#02451978 RUBBER SW EFFECT 1
#02452134 SLG-12-465A SLIDE SWITCH SW1 on MB 1
JACK, SOCKET
00569278 LGR4609-7100 6.5MM JACK JK7,JK9 on MB 2
13449645 YKC21-3049 (4P) RED/WHITE JACK (PIN) JK8 on MB 1
13449720 HEC2305-01-250 DC JACK JK6 on MB 1
13429672 YKF51-5047 MIDI CONNECTOR JK5 on MB 1
01780712 CN015P-3013-0 CARD CONNECTOR CN1 on MB 1
DISPLAY UNIT
00239767 LB-603VF LED (7SEG.) LED35 on SB 1
NOTE: Replacement LB-603VF should be made on a unit base.
PCB ASSY
#71785956 PWB ASSY (EXG) 1
NOTE: ‘PWB ASSY’ includes the following parts.
#******** MAIN BOARD ASSY Assy 1
NOTE: ‘MAIN BOARD ASSY’ includes the following parts.
#02568645 MAIN SHIELD SHIELD 1
#02568656 SHIELD COVER SHIELD 1
01786712 ESCUTCHEON 1
40011278 SCREW 3x8 BINDING TAPTITE P FE ZC 2
#******** SW BOARD ASSY Assy 1
NOTE: ‘SW BOARD ASSY’ includes the following parts.
#02671167 RIBBON CABLE JWFV 11x125 - P2.0 CN3 on MB to CN9 on SB 1
#02671190 RIBBON CABLE JWFV 5x125 - P2.0 CN12 on MB to CN15 on SB 1
#02671178 RIBBON CABLE JWFV 13x150 - P2.0 CN5 on MB to CN10 on SB 1
#02671189 RIBBON CABLE JWFV 14x125 - P2.0 CN6 on MB to CN8 on SB 1
#02568590 LEAF 1
#40126389 SPACER POLYCA PIPE 3.2x5x2.5 1
IC
#02673712 UPD703101AGJ-33-R02 IC (16BIT CPU) IC23 on MB 1
01235190 TC203C040AF-001(FP) IC (MR2 CHIP) IC9 on MB 1
01783123 LH28F400BVE-BL85 IC (FLASH MEMORY/BLANK) IC22 on MB 1
#02453934 MBM29LV800BA-70PFTN-SFK IC (FLASH MEMORY/BLANK) IC24 on MB 1
01780112 AK4522VF IC (AD/DA) IC35 on MB 1
02121556 LC24085B-SD1 IC (I/F) IC14 on MB 1
01902212 UPD431000AGW-70LL-E2 IC (SRAM) IC13 on MB 1
#02453389 LC32V4265T-25 IC (DRAM) IC27 on MB 1

9
Mar.2001 SP-303
01901989 TC7SET04F(TE85L) IC (CMOS) IC16 on MB 1
#01899167 TC74VHC04FT(EL) IC (CMOS) IC43 on MB 1
15189210 BA15218F-T2 IC (OP AMP) IC3 on MB 1
15289105 UPC4570G2-E2 IC (BIPOLAR OP AMP) IC1,IC2,IC4 on MB 3
15289109 M5216FP-600D IC (BIPOLAR OP AMP) IC5 on MB 1
15199137 AN7805F IC (V.RGL) IC31 on MB 1
#02453923 TA78M05S IC (REGULATOR) IC41 on MB 1
02234778 NJM2360AM-TE3 IC (REGULATOR) IC30 on MB 1
#02453045 S-80927ALMP-DAQ-T2 IC (RESET) IC28 on MB 1
15289124 PC-400 IC (PHOTO COUPLER) IC25 on MB 1
02453056 BU2090FS-E2 IC (LED DRIVER) IC33,IC34,IC44 on SB 3
IC
TRANSISTOR
15309104 2SA1586-GR(TE85R) TRANSISTOR Q12 on SB 1
01784790 2SA1602A-T11-1F TRANSISTOR Q7,Q8,Q9,Q22 on MB 4
00897201 2SA1706S-AN TRANSISTOR Q19 on MB 1
15319107 2SC4116-GR(TE85R) TRANSISTOR Q14 on MB 1
15129844 2SD2012 TRANSISTOR Q10 on MB 1
15329505 DTC314TK T146 DIGITAL TRANSISTOR Q15,Q17 on MB 2
15329521 RN1307(TE85R) TRANSISTOR Q23,Q24,Q25 on MB 3
02340645 RN1441-A(TE85L) TRANSISTOR Q16,Q18 on MB 2
00898201 RN2421(TE85L) TRANSISTOR Q20 on MB 1
15259901 TD62385AF(EL) TRANSISTOR DRIVER IC20 on MB 1
DIODE
01899723 MA111-(TX) SWITCHING DIODE D2,D9 on MB 2
00902978 SB07-03N-AA SCHOTTKY DIODE D11 on MB 1
01780045 RB051L-40 SCHOTTKY DIODE D4 on MB 1
15339135T0 1SS300(TE85R) DIODE DA1,DA2,DA3,DA4,DA5,DA6,DA7,DA8,DA9,DA10,
DA11,DA12,DA13,DA14,DA15,DA16,DA17,DA18,
DA19 on SB
19
01457167 LNJ208R8ARA (CHIP) LED (RED) LED1,LED2,LED3,LED4,LED5,LED8,LED10,LED12,
LED14,LED16,LED18,LED20,LED22,LED24,LED25,
LED26,LED27,LED28,LED29,LED30,LED31,LED32,
LED33,LED36 on SB
24
01786256 SML-010LT T86 LED LED7,LED9,LED11,LED13,LED15,LED17,LED19,
LED21,LED23 on SB 9
01904112 SLR-342VCT32 N.P.Q RANK LED LED34 on SB 1
01897189 MA147-(TX) DIODE ARRAY DA1,DA2,DA3,DA20 on MB 4
RESISTOR
15399423 RPC10T 123 J MTL.FILM RESISTOR R155,R175 on MB 2
15399413 RPC10T 472 J MTL.FILM RESISTOR R75,R207,R208 on MB 3
15399373 RPC10T 101 J MTL.FILM RESISTOR R82,R161,R177,R189,R240,R242 on MB 6
15399365 RPC10T 470 J MTL.FILM RESISTOR R235 on MB 1
15399469 RPC10T 105 J MTL.FILM RESISTOR R124,(R200),R244 on MB 2(3)
15399411 RPC10T 392 J MTL.FILM RESISTOR R133,R140 on MB 2
15399421 RPC10T 103 J MTL.FILM RESISTOR R62,R63,R65,R83,R84,R123,R127,R130,R132,R136,
R144,R146,R148,R162,R180,R181,R182,R185,R192,
R193,R199,(R200),R230,R231,R234,R236,R237,R238,
R243,R246 on MB (R200)
30
(29)
15399391 RPC10T 561 J MTL.FILM RESISTOR R80,R245 on MB 2
15399429 RPC10T 223 J MTL.FILM RESISTOR R129,R149,R163 on MB 3
15399425 RPC10T 153 J MTL.FILM RESISTOR R156,R176 on MB 2
15399445 RPC10T 104 J MTL.FILM RESISTOR R121 on SB R157,R158,R159,R172, R173,R174 on MB 7
15399357 RPC10T 220 J MTL.FILM RESISTOR R160,R171,R183,R184 on MB 4
15399375 RPC10T 121 J MTL.FILM RESISTOR R81 on MB 1
15399377 RPC10T 151 J MTL.FILM RESISTOR R128,R186 on MB 2
15399383 RPC10T 271 J MTL.FILM RESISTOR R87,R88,R89,R90,R91,R93,R94,R95,R96,R97,R98,
R99,R100,R101,R102,R103,R104,R105,R106,R107,
R108,R109,R110,R111,R112,R113,R114,R115,R116,
R117,R118,R120,R229 on SB R187 on MB
34
15399389 RPC10T 471 J MTL.FILM RESISTOR R122 on SB R138,R141 on MB 3
15399397 RPC10T 102 J MTL.FILM RESISTOR R125,R126,R151,R152,R166,R167,R194,R195,R196,
R217,R218,R219,R248,R249 on MB 14
15399401 RPC10T 152 J MTL.FILM RESISTOR R233 on MB 1
15399405 RPC10T 222 J MTL.FILM RESISTOR R86 on MB 1
15419702 RR1220P-102-D 1K OHM MTL.FILM RESISTOR R190 on MB 1
15399437 RPC10T 473 J MTL.FILM RESISTOR R131,R135,R137,R139,R143,R145 on MB 6
15399433 RPC10T 333 J MTL.FILM RESISTOR R150,R170 on MB 2
15399381 RPC10T 221 J MTL.FILM RESISTOR R241 on MB 1
#02453734 RR1220P-162-D MTL.FILM RESISTOR R188 on MB 1
01344723 MCR25 JZH J 220 OHM 1/4W MTL.FILM RESISTOR R247 on MB 1
#01019767 RSSX1/2 0.33 OHM J MTL.OXIDE RESISTOR R191 on MB 1
01013578 EXBV8V470JV RESISTOR ARRAY RA9,RA6 on MB 2
15409113 EXBV8V103JV RESISTOR ARRAY RA26 on MB 1
00126112 EXBV8V101JV RESISTOR ARRAY RA18,RA19,RA20,RA21,RA22,RA23,RA25 on MB 7
00126134 EXBA10E103J RESISTOR ARRAY RA8,RA12,RA15,RA24 on MB 4
01014001 EXBV8V680JV RESISTOR ARRAY RA2,RA3,RA11,RA13,RA14,RA16 on MB 6

10
Mar.2001 SP-303
POTENTIOMETER
#02451956 RK9K111A 250KRD(25MM) 9M/M ROTARY POTENTIOMETER VR6 on MB 1
#02457556 RK09K113A 50KB(20MM) 9M/M ROTARY POTENTIOMETER VR2,VR3,VR4 on SB 3
#02451945 RK09L12C 50KAx2(20MM) 9M/M ROTARY POTENTIOMETER VR5 on SB 1
CAPACITOR
15359206 ECJ2VF1E104Z 100000 PF/25 V CERAMIC CAPACITOR C148,C149,C150,C240 on SB
C60,C61,C62,C63,C65,C66,C67,C68,C69,C70,C73,
C77,C92,C97,C99,C101,C102,C106,C107,C109,C115,
C116,C118,C121,C122,C123,C133,C134,C140,C141,
C146,C147,C155,C161,C162,C165,C172,C173,C175,
C177,C193,C195,C213,C264,C265,C305,C306 on MB
50
15359370 ECJ2VG1H470K CERAMIC CAPACITOR C290 on MB 1
#02453423 ECJ2VC1H100D CERAMIC CAPACITOR C103,C104,C126,C128,C246,C247,C248 on MB 7
15359440 ECJ2VB1H222K CERAMIC CAPACITOR C169,C164 on MB 2
#02453445 ECJ2VC1H151J CERAMIC CAPACITOR C181,C196 on MB 2
#02564089 ECJ2VC1H122J CERAMIC CAPACITOR C190,C207 on MB 2
15359448 ECJ2VB1H103K 0.01 UF/50 V CERAMIC CAPACITOR C108,C111,C112,C113,C114,C120,C127,C129,C130,
C131,C135,C152,C208,C209,C210,C223,C226,C227,
C234,C235,C236,C237,C238,C239,C249,C250,C251,
C258 on MB
28
#15359702 ECJ2VC1H271J CERAMIC CAPACITOR C283,C284,C285,C286,C307on MB 5
#02453456 ECJ2VC1H101J CERAMIC CAPACITOR C184,C203,C216,C253,C254,C255,C257,C263,C266,
C267,C268,C269,C270,C271,C272,C273,C274,C275,
C276,C277,C278,C279,C280,C281,C282,C289,C291,
C292,C293,C294,C295,C296,C297,C298,C299,C300,
C302,C303,C304 on MB
39
15359436 ECJ2VB1H102K CERAMIC CAPACITOR C288,C287 on MB 2
00674423 ECA0JM102B 1000 UF/6.3 V CHEMICAL CAPACITOR C139,C214 on MB 2
01900834 RA2-16V101MC-T2 100 UF/16V CHEMICAL CAPACITOR C197,C182 on MB 2
13639602 ECA1HM010B 1 UF/50 V CHEMICAL CAPACITOR C185,C199,C224 on MB 2
01902590 RA2-6V101MC-T2 100 UF/6.3V CHEMICAL CAPACITOR C160,C167 on MB 2
01902612 RA2-6V471MC-T2 470 UF/6.3V CHEMICAL CAPACITOR C74, C301,C142 on MB 2
01909690 RA2-16V471MC-T2 470 UF/16V CHEMICAL CAPACITOR C144 on MB 3
13649269 ECA1CM100B 10 UF/16 V CHEMICAL CAPACITOR C74,C110,C119,C163,C176,C178,C180,C187,C194,
C205,C211,C225 12
13639512M0 ECEA0JKA101B 100 UF/6.3V CHEMICAL CAPACITOR C100,C105 on MB 2
13639547M0 ECEA1CKA220B 22 UF/16 V CHEMICAL CAPACITOR C154 on MB 1
13639546M0 ECEA1CKA100B 10 UF/16 V CHEMICAL CAPACITOR C64,C78,C117,C124,C132,C156 on MB 8
13639547M1 ECA1CM220B 22 UF/16V CHEMICAL CAPACITOR C159,C171,C183,C189,C198,C204,C242,C243,
C244 on MB 9
13639557M0 ECA1CM102B 1000 UF/16V CHEMICAL CAPACITOR C143,C145 on MB 1
13639605M0 ECA1HM4R7B 4.7 UF/50 V CHEMICAL CAPACITOR C174,C166 on MB 2
02672689 ECEA1HKAR22B 0.22UF/50 V CHEMICAL CAPACITOR C308 on MB
INDUCTOR, COIL, FILTER
#02563301 ELC10D221E CHOKE COIL L7 on MB 1
13529246 DSS310-91D223S-50ATL12-134 EMI FILTER FL1 on MB 1
00903167 N2012Z601T02 (CHIP) FERRITE-BEAD L1,L2,L3,L4,L8,L9,L10,L11,L13,L14,L15,L20,L21,
L22,L23,L24,L26,L27,L28,L29,L30,L31,L32,L33,
L34,L35,L36,L37,L38,L39,L40,L41,L42,L43,L44,L45,
L46,L47,L48,L49,L50,L51,L52,L53 on MB
44
01233345 N2012Z121T02 (CHIP) FERRITE BEAD L16,L17,L18,L19 on MB 4
CRYSTAL, RESONATOR
#02561323 MA-406 33.8688MHZ TE24 CRYSTAL X1 on MB 1
01899745 AT-41CD2 6.4MHZ CRYSTAL X2 on MB 1
SCREW
#40451234 COIN SCREW M3x8 BZC 2
40011312 SCREW 3x8 BINDING TAPTITE P BZC 7
40011278 SCREW 3x8 BINDING TAPTITE P FE ZC 8
PACKING
#02567312 FRONT PAD 1
#02567323 REAR PAD 1
#02567301 PACKING CASE 1
#02567334 ACI ADAPTOR PAD ACI ADAPTOR(100 V,120 V,230 V only) 1
#02568412 ACB ADAPTOR PAD ACI ADAPTOR(230 VE,240 VA only) 1
MISCELLANEOUS
02236489 FOOT 14.5x14.5 4
40344445 LABEL FCC CAUTION 1

11
Mar.2001 SP-303
ACCESSORIES (STANDARD)
#71785990 OWNER'S MANUAL JAPANESE 1
#71890456 OWNER'S MANUAL ENGLISH 1
00905756 AC ADAPTOR ACI-100C 1
00905767 AC ADAPTOR ACI-120C 1
01018312 AC ADAPTOR ACI-230C 1
01458278 AC ADAPTOR ACB-230E (230 VE) 1
12449549 AC ADAPTOR ACB-240(A) 1
40232389 WARRANTY CARD (JAPAN only) 1
#40451756 LEAFLET ENGLISH/JAPANESE 1

12
Mar.2001 SP-303
IDENTIFYING THE VERSION
NUMBER
Turn on the power of the main unit while pressing the [FILTER+DRIVE],
[PITCH] and [DELAY] buttons.
At this time, when “Ver” appears, the version number in actual use is
displayed for about a second.
After checking the version number, if “Crd” appears, turn off the main power.
SAVING USER DATA &
RELOADING SAVED DATA
Initializing SmartMedia.
When using the new SmartMedia in the test mode for saving user sample and
pattern data, always initialize it using the following procedure.
The FACTORY DATA CARD (P/No. 17041008) supplied by the service center
does not need to be initialized.
1. Insert the card when the power of the SP-303 is turned off.
2. Turn on the power.
3. Press the [REMAIN] button while pressing the [CANCEL] button.
The BANK [C] and [D] buttons blink and “FMt” appears.
4. Press either the BANK [C] or [D] button.
The BANK [C] and [D] buttons will light up and the [DEL] button blinks.
* To cancel formatting, press the [CANCEL] button.
5. Press the [DEL] button
The [DEL] button lights up and formatting is executed.
While formatting, the display dot blinks.
When the dot goes out, formatting is completed.
* Do not turn off the power while the dot is blinking.
Otherwise the memory card may be destroyed.
Formatting erases all data on the card.
* Once the SmartMedia is formatted by the SP-303 it may not be usable in other
SmartMedia supporting machines.
SAVING USER DATA
The SP-303 includes two kinds of user data, “sample data” and “pattern data.”
When upgrading the version and test mode, always save the user sample and
pattern data using the following procedure.
Also, when creating SmartMedia with factory data from a new unit and a new
SmartMedia, always save the factory-shipped sample and pattern data using
the following procedure, “Saving user samples” and “Saving user patterns.”
* Do not insert or pullout the SmartMedia with the power on while performing
the following operation.
Otherwise the contents of the card may be destroyed.
* To save the following sample and pattern data, a SmartMedia (3.3V, more than
8MB of available space) with no write protect seal attached is required.
* When saving the user data, always use SmartMedia that has been initialized in
the [Initialize SmartMedia] procedure.
* After creating the SmartMedia including the factory data using the following
procedure, always use it in [return to test mode & factory shipment condition]
after attaching the write protect seal.
Saving user samples (sample saving)
Save sample data of the user.
1. Insert already initialized SmartMedia into the SP-303 while the power is
turned off.
2. Turn on the power.
3. Confirm that the [PATTERN SELECT] button is turned off.
Press the [PATTERN SELECT] button and turn it off if it is lit.
* When the [PATTERN SELECT] button is lit, pattern save operation is selected
so be careful.
4. Press either the [C] or [D] button while pressing the [CANCEL] button.
The BANK [C] and [D] buttons light up and the pad corresponding to the
empty backup area blinks.
* Press the [C] button when creating the SmartMedia including the factory data.
5. Press the pad and specify the number of the area which you want to save.
The pressed pad lights up and the other pads goes off.
* Press the [1] button when creating the SmartMedia including the factory data.
* The number of the area is also selectable by pressing a pad which is not blinking
(excluding pad [8]).
In this case, data already saved in that area will be overwritten, so care is need.
* To cancel saving, press the [CANCEL] button.
6. Press the [REC] button
The [REC] button lights up and the display dot blinks.
During saving, all the pads [1]-[8] light up once and go out sequentially from
pad [1] with as saving progresses.
When the dot goes off, formatting is completed.
* Saving may take awhile to complete.
* Do not turn off the power while the dot is blinking.
Otherwise the memory card and memory data may be destroyed.
Saving user patterns (pattern saving)
Save pattern data of the user.
1. Insert already initialized SmartMedia into the SP-303 while the power is
turned off.
2. Turn on the power.
3. Press the [PATTERN SELECT] button to light it up.
There is no need to press it if it is already lit.
* When the [PATTERN SELECT] button goes off, sample saving is selected, so be
careful.
4. Press either the BANK [C] or [D] button while pressing the [CANCEL]
button.
The BANK [C] and [D] buttons light up and the pad corresponding to the
empty backup area blinks.
* Press the [C] button when creating the SmartMedia including the factory data.
5. Press the pad and specify the number of the area which you want to save.
The pressed pad lights up and the other pads go out.
* Press the [1] button when creating the SmartMedia including the factory data.
* The number of the area is also selectable by pressing a pad which is not blinking
(excluding pad [8]).
In this case, data already backed up in that area will be overwritten, so care is
need.
* To cancel saving, press the [CANCEL] button.
6. Press the [REC] button
The [REC] button lights up and saving is executed.
While saving, the display dot blinks.
When the dot goes out, saving is completed.
* Do not turn off the power while the dot is blinking.
Otherwise, the memory card and memory data may be destroyed.
RELOADING SAVED DATA
The SP-303 includes two kinds of user data, “sample data” and “pattern data.”
When returning the user sample and pattern data saved on the memory card
to the SP-303’s memory, perform the following procedure.
Load sample data from the
SmartMedia (sample loading)
Load sample data.

13
Mar.2001 SP-303
1. Insert the SmartMedia that contains the sample data into the SP-303.
2. Turn on the SP-303’s power while pressing the [CANCEL] button.
3 Confirm that the [PATTERN SELECT] button is turned off.
Press the [PATTERN SELECT] button and turn it off if it is lit.
* When the [PATTERN SELECT] button is lit, pattern loading is selected, so be
careful.
3. Press either the BANK [A] or [B] button while pressing the [CANCEL]
button.
The BANK [A] and [B] buttons light up and the pad corresponding to the
number of the area with data blinks.
* If the saved sample does not exist on the memory card, “EMP” is displayed and
the following operation cannot be performed.
4. Press the pad and specify the number of the area which you want to load.
The pressed pad lights up and the [REC] button blinks.
* To cancel loading, press the [CANCEL] button.
5. Press the [REC] button
The [REC] button lights up and the display dot blinks.
During loading, all the pads [1]-[8] light up once and go out sequentially from
pad [1] as loading progresses.
When the dot goes off, loading is completed.
* Loading may take awhile to complete.
* Do not turn off the power while the dot is blinking.
Otherwise, the memory card and memory data may be destroyed.
Load the pattern from the memory card (pattern loading)
Load pattern data.
1. Insert the SmartMedia that contains the pattern data into the SP-303.
2. Turn on the SP-303’s power while pressing the [CANCEL] button.
3. Press the [PATTERN SELECT] button to light up the button.
There is no need to press it if it is already lit.
* When the [PATTERN SELECT] button goes off, sample loading is selected, so
be careful.
4. Press either the BANK [A] or [B] button while pressing the [CANCEL]
button.
The BANK [A] or [B] buttons light up and the pad corresponding to the
number of the area with data blinks.
* If the saved pattern does not exist on the memory card, “EMP” is displayed and
the following operation cannot be performed.
5. Press the pad and specify the number of the area which you want to load.
The pressed pad lights up and the [REC] button blinks.
* To cancel loading, press the [CANCEL] button.
6. Press the [REC] button
The [REC] button lights up and loading is executed.
While executing loading, the display dot blinks.
When the dot goes off, loading is completed.
* Do not turn off the power while the dot is blinking.
Otherwise, the memory card and memory data may be destroyed.
HOW TO UPDATE SYSTEM
SOFTWARE
The SP-303 can be updated in two ways, [Updating by SmartMedia] and
[Updating by SMF].
However, when updating the SP-303, the sampling tone and pattern data are
all initialized.
When updating, save user area data on the SmartMedia by using [SAVING
USER DATA] in this service note.
Notes
Do not turn off the SP-303 while updating.
The contents of the flash ROM may be damaged and the SP-303 will stop
functioning.
In this case, update again using the following [HOW TO UPDATE SYSTEM
SOFTWARE] procedure below.
1. Updating by SmartMedia
What is needed
SmartMedia for updating (P/No. 17041008)
Perform the following procedure when updating with SmartMedia.
1. Insert the delivered SmartMedia (P/No. 17041008) for updating into the
SP-303.
2. Turn on the power while pressing the [FILTER+DRIVE], [PITCH] and
[DELAY] buttons.
3. The following indications will each appear consecutively for about a
second.
“VEr” -> “version number (1.**) presently in use” “Crd” -> “VEr” -> “system
version number (1.**) included in the SmartMedia”
After “system version number included in the SmartMedia” is displayed,
“REC” appears and the [REC] button LED blinks.
Press the [REC] button when updating.
4. While updating, after displaying the Checksums corresponding to each
NUMBER SW[1]-[8], the LEDs of number switches [1]-[8] will light up
consecutively and dots will light up for the Checksum value accordingly
to the each lit LED.
5. When updating is completed, “End” and Checksum number are
displayed alternately.
After checking the Checksum number, turn off the power and remove the
SmartMedia from the SP-303.
* After all procedures are completed, load user sample and pattern data by using
[Reloading saved data].
2. Updating by SMF
The SP-303 system is supplied in standard MIDI file (SMF, P/No.17041007)
format.
What is needed
Floppy disk for updating (P/No. 17041007)
MIDI cable
MIDI sequencer
(For MIDI sequencer, use SMF data playbackables such as the MC-80.)
The following SMF data are saved on the disk.
SP-303 SYSTEM VER 1.**
_00001.MID
_00002.MID
_00003.MID
_00004.MID
_00005.MID
_00006.MID
_00007.MID
_00008.MID
Perform the following procedure when updating with MIDI.
1. Connect MIDI OUT if the MIDI sequencer can playback SMF data and
SP-303 MIDI IN by MIDI cable.
2. Turn on the power while pressing the [MFX], [VINYL SIM] and
[ISOLATOR] buttons.
3. The following indications will each appear consecutively for about a
second.
“VEr” -> “version-> (1.**) of machine presently in use” -> ”SMF”
After “SMF” is displayed, it enters the data receiving waiting condition.
4. Insert the delivered 3.5 inch disk (P/No. 17041007) for updating into the
MIDI sequencer.
5. Playback “_00001.MID” from the MIDI sequencer.
While writing, the display changes from “100” to “1FF” as receiving is
completed, and after the Checksum is displayed, the dot and the NUMBER
SW[1] light up.
Following the same procedure, send _00001.MID to _00008.MID sequentially
from the MIDI sequencer to the SP-303.

14
Mar.2001 SP-303
* The first number of the 3-digit displayed on the SP-303 and the NUMBER SW
which lights up represent the song number being received and the song number
already received.
6. When updating is completed, “End” and the Checksum are alternately
displayed.
7. Turn off the power after checking the Checksum.
* After all procedures are completed, load user sampling and pattern tone data by
using [Reloading saved data].
TEST MODE &
RESORTING THE FACTORY SETTING
Required items
1. Machine which enables output of note data from MIDI OUT (PC-200 etc.)
2. MIDI cable
3. Oscillator
4. Oscilloscope
5. Noisemeter
6. SmartMedia 1 (FACTORY DATA CARD (P/No.17041008) supplied by
the service center)
7. SmartMedia 2 (3.3V product, initialized with more than 8MB available
space)
* To perform all test modes, SmartMedia 1 and 2 are required.
* Always use SmartMedia 2 after initializing by [Initializing SmartMedia].
1. Entering the TEST MODE
Insert the SmartMedia that contains the factory preset data created by the new
product and the SmartMedia (see [SAVING USER DATA & RELOADING
SAVED DATA] for the method) or FACTORY DATA CARD (P/No.17041008)
supplied by the service center, and turn on the power while pressing the
BANK [A], [B], [C] and [D] buttons.
“tst” appears and the test mode starts.
* Starting the test mode with the following operation enables you to start each test
at a preferred point.
1. Turn on the power while pressing the BANK [A], [B], [C] and [D] buttons.
-> Enables you to start each test from the beginning.
2. Turn on the power while pressing the BANK [A], [B] and [C] buttons.
-> Enables you to start from [5. LINE IN/OUT TEST] in the test mode.
3. Turn on the power while pressing the BANK [B] and [C] buttons.
-> Enables you to perform each test separately.
When turning on the power, “tSt” appears and NUMBER SW [1]-[8] buttons
blink.
The following tests can be executed separately by pressing NUMBER SW [1]-
[8] buttons.
NUMBER SW [1]:1.VERSION & DEVICE CHECK
NUMBER SW [2]:2.SMART MEDIA & SUM CHECK
NUMBER SW [3]:3.SWITCH & LED CHECK
NUMBER SW [4]:4.VOLUME CHECK
NUMBER SW [5]:5.LINE IN/OUT CHECK
NUMBER SW [6]:6.PHONE CHECK
NUMBER SW [7]:7.MIC CHECK
NUMBER SW [8]:8.CARD CHECK
4. When executing the test in 3. above, after completing all the tests
excluding [1. VERSION & DEVICE CHECK], the [REC] button blinks.
When pressing the [REC] button, NUMBER SW [1]-[8] buttons blink, enabling
tests to be selected separately.
2. Test item list
The [Test mode] includes the following:
Digital circuit test
1.VERSION & DIGITAL CHECK
2.SMART MEDIA & SUM CHECK
3.SWITCH & LED CHECK
4.VOLUME CHECK
8.CARD CHECK
9.MUTE CHECK (*)
11.EFFECT CHECK (*)
12.MIDI CHECK (*)
13.PROTECT CHECK (*)
Analog circuit test
5.LINE IN/OUT CHECK
6.PHONE CHECK
7.MIC CHECK
10.NOISE CHECK (*)
* Perform this test (*) with in ususal operation mode.
3. Modifying test items
The test items for performing the following operations can be modified during
test mode.
1. To move from the presently executed test to the previous test item.
-> Press the [DEL] button
(For [3. SWITCH & LED CHECK], press the [DEL] button while pressing the
[CANCEL] button.)
2. To move from the presently executed test to the next test item.
-> Press the [REC] button
(For [3. SWITCH & LED CHECK], press the [REC] button while pressing the
[CANCEL] button.)
3. To re-execute the presently executed test.
-> Press the [CANCEL] button
(For [3. SWITCH & LED CHECK], press the [REMAIN] button while pressing
the [CANCEL] button.)
4. To re-test by escaping an “Err” indication.
-> Press the [CANCEL] button
5. To select each test from the presently executed test.
-> Press the [DEL] or [REC] buttons.
(Only when entering the test mode from [1. Entering the test mode] 3. For [3.
SWITCH & LED CHECK], return to the selection screen using the [DEL]
button while pressing the [CANCEL] button.)
4. Test contents
Note:
* During the test mode, do not turn the power off while the dot on the display is blinking,
Otherwise, the memory card and memory data may be destroyed.
1.VERSION & DIGITAL CHECK
Check the version of the machine in use and device function.
1.1VERSION CHECK
After “VEr” appears on the display, the version number of the program of the
Flash ROM (IC22) in actual use appears.
1.2 DEVICE CHECK
The following four tests are executed automatically and the [2.1 SMART
MEDIA CHECK] writing function shown below starts.
Check that the [2.1 SMART MEDIA CHECK] writing function is displayed
without error .
If an error occurs, its content will be displayed.
Re-execute the test after turning on the power again.
(The contents of the error message are written in the [Error message list]).

15
Mar.2001 SP-303
1. Check the function of the CPU (IC23) and FLASH MEMORY 4M, 8M
(IC22, IC24).
2. Check the function of the CPU RAM (IC23) and DRAM (IC27).
3. Check the function of the DSP (IC9) and CPU (IC23).
4. Check the function of the DSP (IC9) and SRAM (IC13).
* When entering the test mode in [1. Entering the test mode] 3., the test is
completed automatically and returns to the selection screen of each test.
2. SMARTMEDIA & SUM CHECK
Check the writing of the factory-shipped sample and pattern data and
Checksum.
* In this test, pressing the [CANCEL] button retests only the [2.2 SUM CHECK].
2.1 SMARTMEDIA CHECK
Write the factory-shipped sample and pattern data into the machine in use
from the SmartMedia that contains the factory preset data.
During writing, “uPd” appears and the dot blinks.
After writing is completed, the test proceeds to the next test automatically.
* To perform this process, a SmartMedia containing the factory data is required.
SmartMedia containing the factory data can be created using a new machine
and new SmartMedia.
(See [SAVING USER DATA & RELOADING SAVED DATA] for the method)
Also, SmartMedia containing factory data (P/No.17041008) can be supplied as
a service part from the service center.
* While writing to the machine in use, the [CANCEL] and [REC] buttons cannot
be operated.
* If the SmartMedia is not inserted, writing is not performed and the machine
automatically proceeds to the next test.
2.2 SUM CHECK
Checksum is displayed.
2.2 Upon reaching Checksum without any problems, proceed to the next test
by pressing the [REC] button.
3.SWITCH & LED CHECK
Check the SWITCH function and display appearance.
Each segment and point of the display lights up sequentially. Check that
everything lights up.
Check the function by pressing each SW. The peak LED lights up when the
SWITCH is pressed.
LEDs can be turned off by pressing the appropriate SWITCH.
* When two SWITCHes are pressed simultaneously, “Err” is displayed and the
test mode stops.
In which case, turn the power off and on again and start the test from the
beginning.
After pressing all the SWITCHes, “End” appears.
Pressing the blinking [REC] button proceeds to the next test.
* When entering the test mode in [1. Entering the test mode] 1., the machine
automatically proceeds to the next test after the present test is completed.
4. VOLUME CHECK
“CtL” appears. Check the function of each handle.
Rotate the CTRL1 handle “all the way to the left.”
Rotate the CTRL1 handle “all the way to the right.”
At this time, check to see that the display changes from “0-127.”
Repeat the same procedure for CTRL2 and CTRL3/MFX and check that the
same display changes occur. When all handles function without any problem,
“End” appears. Pressing the blinking [REC] button proceeds to the next test.
* When entering the test mode in [1. Entering the test mode] 1., the machine
automatically proceeds to the next test after the present test is completed.
* When operating handles other than the ones you are checking, “Err” appears
and the test stops.
Press the [CANCEL] button and execute [4. VOLUME CHECK] again from the
beginning.
5. LINE IN/OUT CHECK
“Lin” appears.
Check the function of the signal input to INPUT L and R at the time of output
from OUTPUT L and R .
5.1 INPUT/OUTPUT LEVEL CHECK
Set the oscillator to a rectangular “200 Hz and 100m Vp-p” wave and input to
INPUT L.
Rotate the VOLUME handle “all the way to the right.”
Connect OUTPUT L to the oscilloscope and check that the following
rectangular wave is output.
fig.fig1
(200 mV/DIV, 1.00 ms/DIV)
Rotate the VOLUME handle “all the way to the right”-> ”all the way to the
left” -> “all the way to the right” and check that the amplitude of the
waveform changes from maximum -> minimum (without amplitude) ->
maximum.
In the same way, check that the above waveform is output by connecting the
oscillator and oscilloscope to INPUT R and OUTPUT R, and that the amplitude
changes when the VOLUME handle is operated.
5.2 Residual noise check
Rotate the MIC VOLUME handle “all the way to the left” and VOLUME
handle “all the way to the right,” and connect the Noisemeter to OUTPUT L.
Set the Noisemeter to “JIS-A(IHF-A)” and check that the following value is
acquired for residual noise.
OUTPUT L -70.0[dBm] or below
OUTPUT L -70.0[dBm] or below
In the same way, check to see if the above value is acquired for residual noise
for OUTPUT R.
Pressing the blinking [REC] button proceeds to the next test.
6. PHONE CHECK
“PHo” appears on the display.
Check the function of the signal input to INPUT L and R at the time of output
from the PHONE terminal.
6.1 INPUT/PHONE OUT LEVEL CHECK
Set the oscillator to rectangular “200 Hz and 100m Vp-p” wave and input to
INPUT L.
Rotate the VOLUME handle “all the way to the right.”
Connect the L channel side of the PHONE terminal to the oscilloscope and
check that the following rectangular wave is output.

16
Mar.2001 SP-303
fig.fig1
(200 mV/DIV, 1.00 ms/DIV)
Rotate the VOLUME handle “all the way to the right” -> ”all the way to the left”
-> “all the way to the right” and check that the amplitude of the waveform
changes from maximum -> minimum (without amplitude) -> maximum.
In the same way, check that the above waveform is output by connecting the
oscillator and oscilloscope to INPUT R and R channel side of the PHONE
terminal and if the amplitude changes with the function of the VOLUME handle.
Pressing the blinking [REC] botton proceeds to the next test.
7. MIC CHECK
“MiC” appears.
Check the function of the signal input to MIC IN at the time of output from
OUTPUT L and R .
7.1 MIC LEVEL CHECK
Set the oscillator to rectangular “200 Hz and 15m Vp-p” wave and input to MIC IN.
Rotate the VOLUME handle “all the way to the right.”
Rotate the MIC VOLUME handle “all the way to the right.”
Connect OUTPUT L to the oscilloscope and check that the following
rectangular wave is output.
fig.fig2
(200 mV/DIV, 1.00 ms/DIV)
Rotate the VOLUME handle “all the way to the right” -> ”all the way to the left”
-> “all the way to the right” and check that the amplitude of the waveform
changes from maximum
-> minimum (without amplitude) -> maximum.
Rotate the MIC VOLUME handle “all the way to the right” -> ”all the way to the
left” -> “all the way to the right”, and check if the amplitude of the waveform
changes from maximum -> minimum (without amplitude) -> maximum.
In the same way, check if the above waveform is outputted by connecting the
oscilloscope to OUTPUT R, and if the amplitude changes with the function of
the VOLUME and MIC VOLUME handles.
8. CARD CHECK
“Crd” appears.
Check the loading and writing function of the SmartMedia.
When executing this test, always use the SmartMedia initialized in the
[Initializing SmartMedia.] procedure.
Insert initialized but not write protected SmartMedia.
“Wr” appears and the dot blinks, and writing test is executed automatically.
“rd” appears and the dot blinks, and loading test is executed automatically.
When stopping with “Err” display, press the [CANCEL] button and execute
the test again.
When the test is completed without any problems, “End” is displayed.
Turn off the power and end the test mode.
Remove the SmartMedia and execute the following test after turning the
power on as usual.
9. MUTE CHECK
Check that the MUTE function is functioning
Connect a headphone to the PHONE terminal.
Rotate the VOLUME handle “all the way to the right.”
Turn on the power while listening to the headphone sound.
At this time, check if no sounds are produced after hearing a “snap” from the
headphone.
10. NOISE CHECK
Check that noise from the wiring is not heard from the headphone.
Connect a headphone to the PHONE terminal.
Turn on the power.
While listening to the headphone sound, check if no [clicking] noise is heard
form the headphone when rotating the VOLUME handle to 9, 12 and 3 o’
clock to the right sequentially.
* When a noise is heard, shape the wiring with [Shaping the wiring] and execute
the test again.
11. EFFECT CHECK
Check if the Effect function is functioning
Turn on the power.
After "303" and dot of a display disappears, keep pressing the NUMBER SW
[1] button.
At this time, if in a factory shipment condition, the sample sound of the drum
playbacks in loop.
Press the [MFX] button
Rotate CTL1, CTL2 and CTL3 “all to the left” and then “all to the right.”
Check if sample sounds have reverberation.
12. MIDI CHECK
Check the function of the MIDI note data at the time of input.
Connect the MIDI OUT of machine (PC-200 etc) which can output MIDI note
data and MIDI IN of SP-303.
Set the MIDI channel of the connected machine to “1 ch.”
* When all test mode ends, SP-303 is set to “1ch.”
Turn on the power.
When sending the note number (C2-G2, D#3) from the connected machine,
check that the SP-303 pad (BANK A, 1-BANK A, 8, BANK B, 8) rings.
* Receiving a note number of pad with no sample sound will produce no sound.
13. PROTECT CHECK
Check the SmartMedia protect function.
Attach a write protect seal to the SmartMedia used in [8. Card Check].
Insert the card when the power of the SP-303 is turned off.
Turn on the power.
Press the BANK [C] button
Press the [REC] button
At this time, check that “Prt” appears.
All tests are now completed.

17
Mar.2001 SP-303
ERROR MESSAGE
In usual function, when problems occur is the test mode function, the
following letters appear.
Err cause: Error in test items other than the device check
E.0 cause:4M Flash ROM device error
(Solder, pattern and device defection, and device mistake of the
4MB FLASH ROM IC)
E.1 8M Flash ROM device error
(Solder, pattern and device defection, and device mistake of the
8MB FLASH ROM IC)
E.2 CPU RAM error
(CPU IC device defection)
E.3 DRAM error
(Solder, device and pattern defection of DRAM IC)
E.5 DSP read/write error
E.6 DSP IRAM error
E.7 DSP ERAM error
E.8 DSP error
(Solder and pattern defection around the DSP IC and EFFECT RAM
IC. Solder and pattern defection between the DSPIC and CPU IC.
Device defection of DSP IC or EFFECT RAM IC.)
E.9 Card Not Formated
E.10 Card Not Protected
E.11 No Sample Data
E.12 No Pattern Data
E.13 Card Read error
E.14 Data Memory Write error

18
Mar.2001 SP-303
ABOUT THE SHAPING OF THE
WIRING
After disassembling the SP-303 for replacing the basal board and when hearing
a noise in [10. NOISE CHECK] in [Return to test mode & factory shipment
condition], always shape the ribbon cable 1-4 (P/No.02671167, 02671178,
02671189, 02671190) as described in the figure below.
* When hearing a noise in [10. NOISE CHECK], assemble referring to [2.
RIBBON CABLE 13P (P/NO. 02671167) shaping method].
fig.ribon
1.RIBON CABLE 5P (P/No.02671190)
2.RIBON CABLE 14P (P/No.02671189)
3.RIBON CABLE 13P (P/No.02671178)
4.RIBON CABLE 11P (P/No.02671167)
1.RIBON CABLE 5P (P/
No.02671190) shaping method
Bend the SW board (P/No. 71785956) and RIBBON CABLE 5P (P/
No.02671190) vertically and make a fold line by bending to the center of
RIBBON CABLE 5P.
fig.ribon11
1. Bend the ribbon cable vertically.
2. Bend at the center between main board and SW board.
Centralizing the fold line in the center, pick about 2 cm by finger and press
down the part of RIBBON CABLE 5P which was picked by the finger next to
the line terminal.
(At this time, make sure the RIBBON CABLE 5P between the SW board and
the center fold line goes over the BOSS of the top case.)Åj
FIG12.eps
1. Make a fold line by bending for about 2 cm.
2. Press down to the direction of the arrow.
FIG13.eps
FIG14.eps
1.BOSS
2.Step over the BOSS.
* When fastening after building the body, the screw hole of the bottom cover may
get covered with the cable when the RIBBON CABLE 5P and BOSS run in to
each other.
When building up, fit the top case and bottom cover by adjusting the RIBBON
CABLE 5P position.
BOSS

19
Mar.2001 SP-303
2. RIBON CABLE 14P (P/
No.02671189) shaping method
Bend the SW board (P/No. 71785978) and RIBBON CABLE 14P (P/
No.02671189) vertically, then bend and make a fold line at about 3 cm position
from the main board of the RIBBON CABLE 14P (P/No.02671189)
fig.ribon21
1. Bend the ribbon cable vertically.
2. Make a fold line at about 3 cm position from the main board.
Insert the fold line of RIBBON CABLE 14P under the RIBBON CABLE 13P.
fig.ribon22
1. Insert to the direction of the arrow.
3. RIBON CABLE 13P (P/
No.02671178), RIBON CABLE
11P (P/No.02671167) shaping
method
* Same shaping method can be used for these 2 ribbon cables.
Bend the SW board (P/No.71785978), RIBON CABLE 13P (P/No.02671178)
and RIBBON CABLE 11P (P/No. 02671167) vertically, and bend them
vertically to a position at about 1 cm from the main board (P/No.71785967) of
the RIBBON CABLE 13P (P/No.02671178) and RIBBON CABLE 11P (P/
No.02671167).
fig.ribon31
1. Bend vertically.

20
Mar.2001 SP-303
BLOCK DIAGRAM
FIG_BLOCK.eps
RIBON CABLE 13P
CPU(I
8M Flash
M
(IC2
4
SP-303 BLOC
K
Adress/Data BUS
4M DRAM
(IC27)
X'tal(
X
TR
A
(IC
Photo
Coupler
(IC25)
MIDI IN
7seg x 3
CHIP LED
VR
(CTL1 ~ 3)
LED DRIVER
(IC33,34.44)
VR5(VOLUME)
COD
E
(IC3
5
LINE IN L
LINE IN R
MIC IN
VR6(MIC VOLUME)
SW BOARD
SW
RIBON CABLE 5P
RIBON CABLE 14P
RIBON CABLE 14P
RIBON CABLE 14P
RIBON CABLE 11P
Peak LED
(LED34)
LOGIC
(IC43)
RIBON CABLE 13P