Yamaha DIO8 Service Manual

DIGITAL IO BOX

SERVICE MANUAL

011510

PA

200004**-350000

REVISED PAGE LIST ··························································· 2-1 SPECIFICATIONS································································· 3-1 PANEL LAYOUT···································································· 3-2 DIMENSIONS········································································ 3-3

BLOCK DIAGRAM···································································· 4 DISASSEMBLY PROCEDURE················································· 5 LSI PIN DESCRIPTION···························································· 8 IC BLOCK DIAGRAM ····························································· 12 CIRCUIT BOARDS································································· 14

INSPECTION·········································································· 19 TEST PROGRAM··································································· 21 PARTS LIST

CIRCUIT DIAGRAM

HAMAMATSU, JAPAN

0.27K-

****

Printed in Japan '00.09

DIO8

REVISED PAGE LIST

SPECIFICATIONS PANEL LAYOUT DIMENSIONS INSPECTION TEST PROGRAM

<

PARTS LIST>

OVERALL ASSEMBLY DC ASSEMBLY FRONT PANEL ASSEMBLY ELECTRICAL PARTS

ITEM

PAGE

3-1 3-2

3-3 19~20 21~28

PAGE

3 5 6

7~11

2-1

DIO8

2-2

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.

IMPORTANT NOTICE

This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the users, and have therefore not been restated.

WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal

injury, destruction of expensive components and failure of the product to perform as specified. For these reasons, we advise all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or the appointed service representative.

IMPORTANT: This presentation or sale of this manual to any individual or firm does not constitute authorization, certification,

recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.

The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and service departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributor's Service Division.

WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have

accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus).

IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the

unit.

WARNING

Components having special characteristics are marked and must be replaced with parts having specification equal to those originally installed.

IMPORTANT NOTICE FOR THE UNITED KINGDOM

Connecting the Plug and Cord

IMPORTANT. The wires in this main lead are coloured in

accordance with the following code:

BLUE: NEUTRAL BROWN: LIVE

As the colours of the wires in the main lead of this apparatus may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows:

The BLUE wire must be connected to the terminal that is marked with the letter N (or coloured BLACK).

The BROWN wire must be connected to the terminal that is marked with the letter L (or coloured RED).

Be certain that neither core is connected to the earth terminal of the three pin plug.

SPECIFICATIONS

DIO8

Sampling frequency (external sync)

Power supply

Power consumption Dimensions (W x H x D) Weight Operating temperature Power cable length Accessories

39.69 kHz – 50.88 kHz USA and Canada: 120 V, 60 Hz Others: 230 V, 50 Hz 70 W 480 mm x 185.5 mm x 411.6 mm

15.5 kg 10 – 35 ˚C

1.5 m Connection cable (68-pin, D-sub, half-pitch) x 2, Length: 3 m

I/Os

I/O connectors

INPUT A, B OUTPUT A, B COM WORD CLOCK IN WORD CLOCK OUT (X4)

*1: On the rear panel

RS422 RS422 RS232C TTL/75 Ω (ON/OFF) TTL/75 Ω

Level

D-sub, half-pitch, 68-pin connector (female) D-sub, half-pitch, 68-pin connector (female) D-sub,9-pin connector (male)

*1

BNC connector BNC connector

Slots

Eight slots (slots 1-8) are available on the DIO8 for installing digital I/O cards and analog I/O cards. Slot 1 supports a serial interface card (not released yet).

Type

Card

MY8-TD MY8-AT MY8-AE MY8-AD MY4-AD MY4-DA

TASCAM ADAT AES/EBU ANALOG IN ANALOG IN ANALOG OUT

Format

8 IN 8 IN 8 IN 8 IN 4 IN —

Input

Output

8 OUT 8 OUT 8 OUT — — 4 OUT

3-1

PANEL LAYOUT

*

The illustration shows the unit

without any cards installed.

I/O UNIT ID

PORT B SELECTOR

5-8 1-4

POWER

ON/ OFF

I/O UNIT ID

PORT B SELECTOR

5-8 1-4

POWER

ON/ OFF

DIGITAL IO BOX

12345678

75

IN

ON

OFF

OUT

COM OUTPUT

B (1–4/5–8) A (1–4/1–8)

INPUT

B (1–4/5–8) A (1–4/1–8)

WORD CLOCK

75

IN

ON

OFF

OUT

OUTPUT

B (1–4/5–8) A (1–4)/(1–8)

INPUT

B (1–4/5–8) A (1–4)/(1–8)

WORD CLOCK

COM

1

2

3

5

6

7 8

4

1

I/O UNIT ID indicator

2

PORT B SELECTOR switch

3

POWER ON/OFF switch

4

WORD CLOCK IN jack, ON/OFF switch

5

WORD CLOCK OUT jacks

6

COM port

7

OUTPUT connectors A (1-4)/(1-8), B (1-4/5-8)

8

INPUT connectors A (1-4)/(1-8), B (1-4/5-8)

Front Panel

DIO8

Rear Panel

3-2

400

411.6

176

480

185.5

I/O UNIT ID

PORT B SELECTOR

5-8 1-4

POWER

ON/ OFF

9.5

DIO8

DIMENSIONS

Unit: mm

3-3

SLOT 1

SLOT 4

SLOT 5

SLOT 8

CN

WC

2ch 4

4

2ch 4

4

2ch 4

2ch or 4ch 16

2ch or 4ch

16

2 or 4ch

16

2ch or 4ch 16 2ch or 4ch 16

2ch or 4ch 16

2ch 4

2ch 4 2ch 4

2ch 4

MUTE

2ch 4

MUTE

2ch 4

MUTE

Serial (DIO_SLOT1)

Master CLOCK

Master

CLOCK

Master

CLOCK

4

8

Reg. control, Card IDReg. control, Card ID

PORT B SEL. SW

SCI SEL. SW

Slave_LOCK

Serial (DIO_SLOT1)

SCI (DIO_SLOT1/COM)

SCI (Tx_Rx)

Master_WC

Master_LOCK

DATA_bus

ADDRESS_bus

Serial (COM)

UNIT No.

LED3

MAIN

CPU

IC9

ROM RAM

IC13, 14

FLASH

Driver/

Receiver

IC2

IC18

IC104

COM

FPGA

MUTE

UNLOCK SOFT POW. OFF

DIO_SLOT1 /COM SEL.

Slave_LOCK

Address Decoder

Reg.

CS1

:

CS8

CON1

:

CON8

SLOT_WC[8]

:

SLOT_WC[1]

DIR2

IC109

IC104

IC101

IC106, 110

Reg.

Master_WC

Receiver

IC1

Driver

IC2, 3

WC IN

WC OUT

75

Parallel

bus

DSP5

#1

IC201

DSP5

#2

IC202

DIR2

2

INT

48k

44.1K

Slave_LOCK

Slave

LOCK

DIR2

IC108

DIO I/F

ATSC 4

IC307-310

UNLOCK MUTE

Slave_LOCK

Slave

LOCK

DIR2

IC115

DIO I/F

ATSC 4

IC607-610

UNLOCK MUTE

SELSEL

Slave_WC

SLOT_WC[1-8]

FRGA

WC SEL & HDLT

MSB. 2CH OUT

ID OUT

ID IN

OUTPUT B

MUTE

MSB. 2CH IN

ID OUT

ID IN

INPUT B

MSB. 2CH IN

ID OUT

ID IN

INPUT A

MSB. 2CH OUT

ID OUT

ID IN

OUTPUT A

Driver/

Recerver

Audio IN

WC IN

WC OUT

Tx, Rx

RTS, DTR

Driver/

Recerver

Audio OUT

WC IN

WC OUT

Tx, Rx

RTS, DTR

Driver/

Recerver

Audio IN

WC IN

WC OUT

Tx, Rx

RTS, DTR

Driver/

Recerver

Audio OUT

WC IN

WC OUT

Tx, Rx

RTS, DTR

IC801-806

IC601-606

IC501-506

IC301-306

KEC-92496

DIO8

4

BLOCK DIAGRAM

DIO8

5

3. DC Circuit Board

3-1 Remove the DC assembly. (See Procedure 2.) 3-2 Remove the four (4) screws marked [80]. The transistor

holder 1 can then be removed. (Fig. 3)

3-3 Remove the five (5) screws marked [100]. The transistor

holder 2 can then be removed. (Fig. 3)

3-4 Remove the three (3) screws marked [50] and the two (2)

screws marked [60]. The DC circuit board can then be removed. (Fig. 3)

4. CN Circuit Board

* Note that remove all cards before following operation. 4-1 Remove the top cover. (See Procedure 1.) 4-2 Remove the eight (8) screws marked [330]. The angle

bracket can then be removed. (Fig. 4)

DISASSEMBLY PROCEDURE

DC assembly

Power transformer

[370]

[350]

Top panel[430] x 16

[220]

Fig. 1 Fig. 2

[430]: Bind Head Tapping Screw-B A4.0x8 MFZN2BL (VC688800)

WC

[350]

[370]

1. Top Cover

1-1 Remove the sixteen screws (16) marked [430]. The top

cover can then be removed. (Fig. 1)

2. Circuit Boards and Unit

Remove the top cover, each circuit board and unit can then be removed. (Fig. 2)

Circuit Board and Unit

DC Assembly Power Transformer WC

350 370 220

Bind Head Tapping Screw-B A4.0x6 MFZN2BL (VC688800) Bind Head Tapping Screw-B A4.0x6 MFZN2BL (VC688800) Flat Head Screw 3.0x6 MFZN2BL (VS863000)

4 4 5

Ref. No. Screw QTY

5. MAIN Circuit Board

5-1 Remove the top cover. (See Procedure 1.) 5-2 Remove the CN circuit board. (See Procedure 4.) 5-3 Remove the sixteen screws (16) marked [450]. The IF

plate can then be removed. (Fig. 5)

5-4 Remove the seven (7) screws marked [260]. The OPT

support can then be removed. (Fig. 5) 5-5 Remove the three (3) screws marked [150]. (Fig. 5) 5-6 Remove the eight (8) screws marked [A] and the two (2)

screws marked [B]. The MAIN circuit board can then be

removed. (Fig. 5)

DIO8

6

• DC Assembly <Top View>

[80]

[100]

[60]

[50]

Transistor holder1

Transistor holder2

Fig. 3

[50]: Bind Head Screw A4.0x8 MFZN2BL (VP156800) [60]: Bind Head Tapping Screw-B 3.0x8 MFZN2BL (EP600190) [80]: Pan Head Screw SP 4.0x8 MFZN2Y (EL200020) [100]: Pan Head Screw SP 4.0x8 MFZN2Y (EL200020)

DC

Angle bracket

[310]

[330]

[310]

[330]

Fig. 4

[290]: Bind Head Tapping Screw-B 3.0x6 MFZN2BL (EP600230) [310]: Bonding Tapping Screw-B 3.0x8 MFZN2BL (VN413300) [330]: Bonding Tapping Screw-B 3.0x8 MFZN2BL (VN413300)

[290]

CN

CN support

4-3 Remove the two (2) screws marked [310]. The CN

support can then be removed. (Fig. 4) 4-4 Remove the six (6) screws marked [290]. The CN circuit

board can then be removed. (Fig. 4)

Front panel assembly

[390]

[410]

Fig. 6 Fig. 7

[390]: Oval Head Screw 4.0x8 MFZN2BL (VS153600) [410]: Oval Head Screw 4.0x8 MFZN2BL (VS153600)

[60]: Bind Head Tapping Screw-B 3.0x6 MFZN2BL (EP600230) [80]: Bind Head Tapping Screw-B A4.0x8 MFZN2BL (VC688800) [100]: Oval Head Screw 4.0x8 MFZN2BL (VS153600)

LED3

AC

Rack mount angle

[410]

[100]

Rack mount angle

Front panel

• Front Panel Assembly

[100]

[60]

[80] x 4

DIO8

7

Fig. 5

[150]: Bind Head Tapping Screw-B 3.0x6 MFZN2BL (EP600230) [260]: Bind Head Tapping Screw-B A4.0x8 MFZN2BL (VC688800) [450]: Bind Head Screw A4.0x12 MFZN2BL (VP156900)

[260]

[450] x 16

[B] [A]

[150]

[260]

OPT support 2

IF plate

OPT support 1

MAIN

[A] [A] [A]

6. Front Panel Assembly

6-1 Remove the eight (8) screws marked [410]. The rack

mount angle can then be removed. (Fig. 6)

6-2 Remove the three (3) screws marked [390]. The front

panel assembly can then be removed. (Fig. 6)

7. LED3 Circuit Board, AC Circuit Board

7-1 Remove the front panel assembly. (See Procedure 6.) 7-2 Remove th five (5) screws marked [100]. The front panel

can then be removed. (Fig. 7)

7-3 Remove the two (2) screws marked [60]. The LED3

circuit board can then be removed. (Fig. 7)

7-4 Remove the four (4) screws marked [80]. The AC circuit

board can then be removed. (Fig. 7)

DIO8

8

PIN NO.

I/O FUNCTIONNAME

NO.

I/O FUNCTIONNAME

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

PE14 PE15

VSS

A0 A1 A2 A3 A4 A5 A6 A7 A8

A9 A10 A11 A12 A13 A14 A15 A16

VCC

A17

VSS

/RAS

/CASL

/CASH

VSS

RDWR / PB5

A18 A19 A20

PB9 /A21

VSS

/RD

/WDTOVF

/WRH

VCC

/WRL

VSS /CS1 /CS0

PA9 / TCLKD /IRQ2 / TCLKC

/CS3 /CS2

/IRQ1

TXD

RXD

/IRQ0 PA1 / TXD0 PA0 / RXD0

D15 D14 D13

VSS

D12

O O

I O O O O O O O O O O O O O O O O O

I O

I O O O O O O O O O

I O O O

I O

I O O O

I O O

I O

I

I O

I

I/O I/O I/O

I

I/O

Port E Port E Ground

Address bus

Power supply Address bus Ground Row address strobe Column address strobe (low) Column address strobe (high) Ground DRAM read/write / Port B

Address bus Port B / Address bus

Ground Read Watch dog timer overflow High write Power supply Low write Ground Chip select Chip select Port A / Timer clock Interrupt request / Timer clock Chip select Chip select Interrupt request Data transmission Data reception Interrupt request Port A / Data transmission Port A / Data reception

Data bus Ground

Data bus

57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98

99 100 101 102 103 104 105 106 107 108 109 110 111 112

D11 D10

D9 D8

VSS

D7 D6 D5

VCC

D4 D3 D2 D1 D0

VSS

XTAL

MD3

EXTAL

MD2

NMI VCC MD1 MD0

PLLVCC PLLCAP PLLVSS

PA15 / CK

/RES

PE0 PE1 PE2 PE3 PE4

VSS AN0 / PF0 AN1 / PF1 AN2 / PF2 AN3 / PF3 AN4 / PF4 AN5 / PF5

AVSS AN6 / PF6 AN7 / PF7

AVCC

VSS PE5

VCC

PE6 PE7 PE8 PE9

PE10

VSS PE11 PE12 PE13

I/O I/O I/O I/O

I I/O I/O I/O

I I/O I/O I/O I/O I/O

I

O

I

O

I

O O O O O

I

O O O

Data bus

Ground Data bus Power supply

Data bus

Ground Crystal oscillator Mode control Crystal oscillator Mode control Non-maskable interrupt request Power supply Mode control Mode control PLL Power supply PLL capacitor PLL Ground Port A / Clock Reset

Port E

Ground

Analog input / Port F

Analog ground Analog input / Port F Analog input / Port F Power supply Ground Port E Power supply

Port E

Ground Port E

HD6437042AF53F (XY721A00) CPU MAIN: IC009

LSI PIN DESCRIPTION

DIO8

9

PIN NO.

I/O FUNCTIONNAME

PIN NO.

I/O FUNCTIONNAME

1 2 3 4 5 6 7 8

9 10 11

12 13

14 15

16 17 18 19

20 21 22

DAUX

HDLT

DOUT

VFL

OPT

SYNC

MCC

WC MCB MCA

SKSY

XI

XO

P256

LOCK

Vss

TC DIM1 DIM0

DOM1 DOM0

KM1

I O O O O O O O O O

I

I O

O O O

I

Auxiliary input for audio data Asynchronous buffer operation flag Audio data output Parity flag output Fs x 1 Synchronous output signal for DAC Fs x 1 Synchronous output signal for DSP Fs x 64 Bit clock output FS x 1 Word clock output Fs x 128 Bit clock output Fs x 256 Bit clock output Clock synchronization control input

Crystal oscillator connection or external clock input Crystal oscillator connection VCO oscillating clock connection

PLL lock flag Logic section power (GND) PLL time constant switching output Data input mode selection Data input mode selection

Data output mode selection Data output mode selection Clock mode switching input 1

23 24 25 26 27 28 29 30 31 32 33

34 35

36 37

38 39 40 41

42 43 44

RSTN

Vdda

CTLN

PCO (NC)

CTLP

Vssa

TSTN

KM2 KM0

FS1 FS0

CSM

EXTW

DDIN

LR

Vdd ERR EMP

CD0

CCK

CLD

I I

O

I I

O O

I I

I

O O

I I

System reset input VCO section power (+5V) VCO control input N PLL phase comparison output

VCO control input P VCO section power (GND) Test terminal. Open for normal use Clock mode switching input 2 Clock mode switching input 0 Channel status sampling frequency display output 1 Channel status sampling frequency display output 0 Channel status output method selection External synchronous auxiliary input word clock EIAJ (AES/EBU) data input PLL word clock output Logic section power (+5 V) Data error flag output Channel status emphasis control code output 3-wire type microcomputer interface data output 3-wire type microcomputer interface clock input 3-wire type microcomputer interface load input

YM3436DK (XG948E0) DIR2 (Digital Format Interface Receiver)

MAIN: IC106, 108–110, 115

DIO8

10

PIN NO.

I/O FUNCTIONNAME

PIN NO.

I/O FUNCTIONNAME

1 2 3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21

22 23

24 25 26

27 28

29 30 31 32 33 34 35 36 37 38 39 40

syncati

mccti mcbti

VCC GND mcati

GND

siat0

siat1

siat2

siat3

ati

GND

ato soat3 soat2 soat1 soat0

VCC

GND

mcato

GND

mcbto mccto

syncato

clksel

ato-sel0 ato-sel1

bitsel2 bitsel1 bitsel0

VCC

GND

ext-sync2

ui0

ui1

ui2

ui3

si-sel0 si-sel1

I I I

I

I I I I I

O O O O O

I

I I I I

I I

Synch. word input terminal for ati, siat3-0 input 64 fs clock input terminal for ati, siat3-0 input 128 fs clock input terminal for ati, siat3-0 input Power supply (+5 V) Ground 256 fs clock input terminal for ati, siat3-0 input Ground

Serial data input terminal

Optical input terminal Ground Optical output terminal

Serial data output terminal

Power supply (+5 V) Ground 256 fs clock input terminal for ato, soat3-0 output Ground 128 fs clock input terminal for ato, soat3-0 output 64 fs clock input terminal for ato, soat3-0 output Synch. word input terminal for ato, soat3-0 output Clock select terminal for ato, soat 3-0 output 0: mcato,mcbto,mccto,syncato 1: mcai,mcbi,mcci,synci Format select terminal for ato, soat3-0 output Format select terminal for ato, soat3-0 output

Bit shift select terminal for the ato output Power supply (+5 V)

Ground Synch. detect output terminal 2

U-bit input terminal for optical output

input format select terminal for si3-0 input format select terminal for si3-0i

41 42 43 44

45 46

47 48 49 50 51 52 53 54 55 56 57 58 59 60 61

62 63

64 65

66

67

68

69 70 71 72 73 74 75 76 77 78 79 80

synci

mcci mcbi VCC

GND mcai

GND

si0 si1 si2 si3

GND

so3 so2 so1

so0 VCC GND

mcao

GND

mcbo mcco

synco so-sel1 so-sel0

uo3

uo2

uo1

uo0

ext-sync1

VCC GND

clk

GND

/res

GND

wc-at

mute ati-sel1 ati-sel0

I I I

I

I I I I

O O O O

I I I

O

O O

I I

O

I I I

Synch. word input terminal for si3-0 input 64 fs clock input terminal for si3-0 input 128 fs clock input terminal for si3-0 input Power supply (+5 V)

Ground 256 fs clock input terminal for si3-0 input

Ground

Serial data input terminal

Ground

Serial data output terminal

Power supply (+5 V) Ground 256 fs clock input terminal for so3-0 output Ground 128 fs clock input terminal for so3-0 output

64 fs clock input terminal for so3-0 output Synch. word input terminal for so3-0 output

Format select terminal for soat3-0 output Format select terminal for soat3-0 output

U-bit output terminal for optical output

Synch. detect output terminal 1 Power supply (+5 V) Ground Clock input terminal for word clock extract Ground System reset input terminal Ground Word clock output terminal Data mute input terminal Input format select terminal for ati, siat3-0. input format select terminal for ati, siat3-0.

SGH609080F-47F (XU235A00) ATSC

MAIN: IC307–310, 607–610

1 1 0 0

so sel1

1 0 1 0

so sel0

not enable to set so0 so2, 0 so3-0

(8ch/line) (4ch/line) (2ch/line)

input format

1 1 0 0

ati sel1

1 0 1 0

ati sel0

ati ati0 ati2, 0 ati3-0

(8ch/line) (4ch/line) (2ch/line)

input format

1 1 0 0

ato sel1

0: mcato,mcbto,mccto,syncato 1: mcai,mcbi,mcci,synci

1 0 1 0

ato sel0

ato soat0 soat2, 0 soat3-0

(8ch/line) (4ch/line) (2ch/line)

output format

1 1 0 0

si sel1

1 0 1 0

si sel0

not enable to set si0 si2, 0 si3-0

(8ch/line) (4ch/line) (2ch/line)

input format

DIO8

11

PIN NO.

I/O

FUNCTION

NAME

NO.

I/O

FUNCTION

NAME

1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99

100 101 102 103 104

NC NC NC

NC Vdd Vss

XI

XO Vdd

/SYNCI

/SYNCO

Vdd CKI

CKO

CKSEL

Vss

MCKD

/SSYNC

/IC

/TEST

NC

NC Vdd Vss /CS

/WR

/RD

CA7 CA6 CA5 CA4 CA3 CA2 CA1

Vss Vdd

CD15 CD14 CD13 CD12 CD11 CD10 CD09 CD08 CD07 CD06

Vss

NC

NC Vdd Vdd

CD05 CD04 CD03 CD02 CD01 CD00 /WAIT

Vss

SIO00 SIO01 SIO02 SIO03 SIO04 SIO05 SIO06 SIO07

Vss Vdd

SIO08 SIO09 SIO10 SIO11 SIO12 SIO13 SIO14 SIO15

Vss Vdd

SIO16 SIO17 SIO18 SIO19 SIO20 SIO21 SIO22 SIO23

Vss Vdd

SIO24 SIO25 SIO26 SIO27

NC

I O O

I O

I

I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O

I/O I/O I/O I/O I/O I/O

O

I/O I/O I/O I/O I/O I/O I/O I/O

I/O I/O I/O I/O

Not used

Ground Power supply System master clock input (60 MHz or 30 MHz) System master clock output (High or 30 MHz) Ground Sync. signal input Sync. signal output Ground System clock input (30 MHz) System clock output (30 MHz) System master clock select Power supply Serial clock input (256 fs) Serial. signal input Initial clear Test mode setting (0: TEST, 1: Normal)

Not used Ground

Power supply Chip select Write enable input Read enable input

CPU address bus

Power supply Ground

CPU data bus

Power supply

Not used

Ground

CPU data bus

Wait output Power supply

Serial data bus

Power supply Ground

Serial data bus

Power supply Ground

Serial data bus

Power supply Ground

Serial data bus

Not used

105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208

NC NC NC

NC SIO28 SIO29 SIO30 SIO31

Vss

Vdd SIO32 SIO33 SIO34 SIO35 SIO36 SIO37 SIO38 SIO39

Vss

Vdd SIO40 SIO41 SIO42 SIO43 SIO44 SIO45 SIO46 SIO47

Vss SIO48 SIO49 SIO50 SIO51 SIO52 SIO53 SIO54 SIO55

Vss

Vdd

Vdd SIO56 SIO57 SIO58 SIO59 SIO60 SIO61 SIO62 SIO63

NC NC NC NC NC NC NC NC

Vss

/POE

Vss PIO00 PIO01 PIO02 PIO03 PIO04 PIO05 PIO06 PIO07

Vss

Vdd

Vdd PIO08 PIO09 PIO10 PIO11 PIO12 PIO13 PIO14 PIO15

Vss

NC PIO16 PIO17 PIO18 PIO19 PIO20 PIO21 PIO22 PIO23

Vss Vdd

Vdd PIO24 PIO25 PIO26 PIO27 PIO28 PIO29 PIO30 PIO31

Vss

NC NC NC NC

I/O I/O I/O I/O

I/O I/O I/O I/O I/O I/O I/O I/O

I

I/O I/O I/O I/O I/O I/O I/O I/O

Not used

Serial data bus

Power supply Ground

Serial data bus

Power supply Ground

Serial data bus

Power supply

Serial data bus

Power supply Ground

Serial data bus

Not used

Power supply Parallel data bus controll signal Power supply

Parallel data bus

Power supply Ground

Parallel data bus

Power supply Not used

Parallel data bus

Power supply Ground

Parallel data bus

Power supply

Not used

YSS904-F (XV989A00) DSP5 (Digital Signal Processor)

MAIN: IC201, 202

1

2

3

1A

1Y

42A

52B

62Y

7

VSS

1B

14

13

12

VDD

4A

11 4Y

10 3B

9 3A

8 3Y

4B

HD74LV00AFPEL (IS000000) Quad 2 Input NAND

MAIN: IC118

HD74LVU04AFPEL (XY102A00) Hex Inverter

MAIN: IC101

HD74LV04AFPEL (IS000400) Hex Inverter

MAIN: IC107

HD74LV08AFPEL (IS000800) Quad 2 Input AND

MAIN: IC8, 119

HD74LV32AFPEL (IS003200) Quad 2 Input OR

MAIN: IC16, 17

SN74LV138ANSR (IS013810) 3 to 8 Demultiplexer

MAIN: IC10, 11

SN74LV139ANSR (IS013910) Dual 2 to 4 Demultiplexer

MAIN: IC24

HD74LV245AFPEL (IS024500) Octal 3-State Bus Transceiver

MAIN: IC1, 3-6, 19-22, 30-35, 103, 112-114, 203,210

TC74HC245AF (XS720A00) Octal 3-State Bus Transceiver

MAIN: IC25-29

1

2

3

4

5

6

7

1A

1Y

2A 2Y

3A

3Y

Vss

14

13

12

11

10

9

8

VDD

6A

6Y 5A

5Y

4A 4Y

1

2

3

4

5

6

7

1A

1Y

2A 2Y

3A

3Y

Vss

14

13

12

11

10

9

8

VDD

6A

6Y 5A

5Y

4A 4Y

1

2

3

1A

1Y

42A

52B

62Y

7

VSS

1B

14

13

12

VDD

4A

11 4Y

10 3B

9 3A

8 3Y

4B

1

2

3

1A

1Y

42A

52B

62Y

7GND

1B

14

13

12

Vcc

4A

11 4Y

10 3B

9 3A

8 3Y

4B

1

2

3

4

5

6

7

A

Select

Enable

Output

B

C

G2A

G2B

G1

Y7

Y7 Y5

Y4

Y3

Y2

Y1

Y0

Y6

16

15

14

13

12

11

10

Vcc

YO

Y1 Y2

Y3

Y4 Y5

8

GND

9

Y6

1

2

3

4

5

6

7

1G

1A

1B 1Y0

1Y1

1Y2 1Y3

A

G

B

Y0

Y1

Y2

Y3

16

15

14

13

12

11

10

Vcc

2G

2A 2B

2Y0

2Y1 2Y2

8

GND

9

2Y3

Y2

Y3

Y1

Y0

B

A

G

1

2

3

4

5

6

7

20

19

18

17

16

15

14

Vcc G

B1

B2

B3

B4

B5

B6

B7 B8

8

9

10

12

11

GND

A8

A7

A6

A5

A4

A3

A2

A1

D1R

13

1

2

3

4

5

6

7

20

19

18

17

16

15

14

Vcc G

B1

B2

B3

B4

B5

B6

B7 B8

8

9

10

12

11

GND

A8

A7

A6

A5

A4

A3

A2

A1

D1R

13

DIO8

12

IC BLOCK DIAGRAM

DIO8

13

HD74LV273AFPEL (IS027300)

Octal D-Type Flir Flop

MAIN: IC7, 15

SN75C1168NSR (XU073A00) Line Driver / Receiver

MAIN: IC2

SN75124NS (XN976A00) Triple Line Receiver

WC: IC1

SN75121NSR (XU816A00) Dual Line Driver

WC: IC2, 3

AM26LS31CNSR (XU996A00) Quad Line Driver

MAIN: IC301, 501-505, 601, 801-805

DS26C32ATMX (XU815A00) Quad Differential Line Receiver

MAIN: IC302-306, 506, 602-606, 806

1

2

3

4

5

6

7

1B

1A

1R

1DE

2R

2A 2B

16

15

14

13

12

11

10

Vcc

1D

1Y 1Z

2DE

2Z 2Y

8

GND

9

2D

1A 1B

2R

2S 2A

2B 2Y

GND

1 16

2 15

3 14

4 13

5 12

6 11

7 10

8 9

Vcc 1S

1R

1Y 3A

3S 3R

3Y

CLEAR

1Q

1D

2D 2Q 3Q

3D

4D 4Q

GND

VCC 8Q 8D 7D 7Q 6Q 6D 5D 5Q CLOCK

1 20

2 19

3 18

4 17

5 16

6 15

7 14

8 13

9 12

10 11

Q

DCK

CL

D

Q

CK

CL

Q

DCK

CL

D

Q

CK

CL

D

Q

CK

CL

Q

DCK

CL

D

Q

CK

CL

Q

DCK

CL

Vcc

2F

2E

2A

2Y

GND

1Y

2C

2B

2D

1A

1B

1C

1D

1E

1F

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

1A 1Y

1Z

2Z

2Y

2A

GND

ENABLE G

16

15

14

13

12

11

Vcc

4A 4Y

4Z

ENABLE G

3Z 3Y

8

9

10

3A

H= high level L= low level

X= irrelevant Z= high impedance (off)

OUTPUTSENABLESINPUT

A

GGYZ H H X X L

X X L L H

H L H L Z

L H L H Z

H L H L X

1

2

3

4

5

6

7

INPUT A INPUT A

OUTPUT A

OUTPUT C

INPUT C

GND

ENABLE

16

15

14

13

12

11

Vcc

INPUT B INPUT B

OUTPUT B

ENABLE

OUTPUT D INPUT D

8

9

10

INPUT D

+

-

+

-

+

CIRCUIT BOARDS CONTENTS

AC Circuit Board (XW293B0)····················································································· 18 CN Circuit Board (XW283B0)····················································································· 17 DC Circuit Board (XW282A0)····················································································· 16 LED3 Circuit Board (XW286B0)················································································· 18 MAIN Circuit Board (XW293B0)················································································· 14 WC Circuit Board (XW293B0)···················································································· 18

Note: See parts list for details of circuit board component parts.

3NA-V446020

Component side

to WC-CN001

INPUT A INPUT B OUTPUT A OUTPUT B COM

from DC-CN401 to CN-CN909 to LED3-CN100

MAIN Circuit Board

to CN-CN910

DIO8

14

CIRCUIT BOARDS

3NA-V446020

Pattern side

MAIN Circuit Board

DIO8

15

Yamaha DIO8 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

REVISED PAGE LIST

SPECIFICATIONS

PANEL LAYOUT

DIMENSIONS

BLOCK DIAGRAM

DISASSEMBLY PROCEDURE

1. Top Cover

2. Circuit Boards and Unit

6. Front Panel Assembly

LSI PIN DESCRIPTION

IC BLOCK DIAGRAM

CIRCUIT BOARDS CONTENTS