Yamaha AD-824 Service Manual

SERVICE MANUAL

PA

011523

HAMAMATSU, JAPAN

1.45K-9731 K Printed in Japan '00.07

CONTENTS

SPECIFICATIONS···································································· 3
PANEL LAYOUT······································································· 5
CIRCUIT BOARD LAYOUT······················································ 6
DIMENTIONS ··········································································· 8
BLOCK DIAGRAM···································································· 9
DISASSEMBLY PROCEDURE··············································· 10
LSI PIN DESCRIPTION·························································· 14
IC BLOCK DIAGRAM ····························································· 16
CIRCUIT BOARDS································································· 19
INSPECTION·········································································· 36
TEST PROGRAM··································································· 39
FLASH ROM UPGRADE························································ 43
ERROR MESSAGES······························································ 45
PARTS LIST
OVERALL CIRCUIT DIAGRAM

AD CONVERTER

200006**-150000

This document is printed on chlorine free (ECF) paper with soy ink.

AD824

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.

LITHIUM BATTERY HANDLING

This product uses a lithium battery for memory back-up.

WARNING: Lithium batteries are dangerous because they can be exploded by improper handling. Observe the following

precautions when handling or replacing lithium batteries.

Leave lithium battery replacement to qualified service personnel.
Always replace with batteries of the same type.
When installing on the PC board by soldering, solder using the connection terminals provided on the battery cells.
Never solder directly to the cells. Perform the soldering as quickly as possible.
Never reverse the battery polarities when installing.
Do not short the batteries.
Do not attempt to recharge these batteries.
Do not disassemble the batteries.
Never heat batteries or throw them into fire.

ADVARSEL!

Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering. Udskiftning må kun ske med batteri af samme fabrikat og type. Levér det
brugte batteri tilbage til leverandøren.

VARNING

Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren.
Kassera använt batteri enligt fabrikantens instruktion.

VAROITUS

Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.
Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.

The following information complies with Dutch Official Gazette 1995. 45; ESSENTIALS OF ORDER ON THE COLLECTION OF
BATTERIES.

• Please refer to the diassembly procedure for the removal of Back-up Battery.

• Leest u voor het verwijderen van de backup batterij deze beschrijving.

SPECIFICATIONS

AD824

3

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.

MY8-AE, MY8-TD

Sampling rate

MY8-AT

AD conversion resolution

Frequency response

Dynamic range *

1

Gain error

THD *

2

Hum & noise level *

1

Equivalent input noise *

1

Crosstalk
Signal delay
Phantom power

PEAK
NOMINAL

Channel indicators SIGNAL

+48 V
SEL
Wordclock

Other indicators +48 V MASTER

POWER

Gain display

Power requirements

Power consumption
Dimensions (W x H x D)
Weight
Free-air operating temperature
Storage temperature
Relative humidity
Power cord length
Supplied accessories
Options

39.69–50.88 kHz

41.013–50.88 kHz
24-bit linear, 128-times oversampling

-1.5, +1 dB, 20 Hz–20 kHz, GAIN +10 dB

-3, +1 dB, 20 Hz–20 kHz, GAIN -62 dB
110 dB (typical), GAIN +10 dB
±1 dB @ 1 kHz, GAIN -62 dB to +10 dB

0.1 %, 4 dB output @ 20 Hz–20 kHz, GAIN -62 dB

0.05 %, full scale output @ 1 kHz, GAIN -62 dB

0.05 %, 4 dB output @ 20 Hz–20 kHz, GAIN +10 dB

0.01 %, full scale output @ 1 kHz, GAIN +10 dB

-92 dB (typical), Rs = 150 Ω, GAIN +10 dB

-62 dB, Rs = 150 Ω, GAIN -62 dB

-128 dB, Rs = 150 Ω, GAIN -62 dB

-70 dB between adjacent channels @ 1 kHz

0.85 ms (analog input to digital output, fs = 48 kHz)
+48 V
3 dB below full scale
14 dB below full scale
34 dB below full scale
Phantom power on/off
Channel select

44.1kHz, 48kHz, BNC, SLOT
Phantom power master on/off
Power on/off
3-digit, 7-segment LED
U.S.A. & Canada 120 V AC, 60 Hz
Europe 230 V AC, 50 Hz
50 W
480 x 97.5 x 377.6 mm (18.9 x 3.84 x 14.86 inches)

8.5 kg (18.7 lbs)
10˚ C to 35˚ C (50˚ F to 95˚ F)

-20˚ C to 60˚ C (-4˚ F to 140˚ F)
10 %–95 %

1.9 m
Owner’s Manual, 9-pin D-sub crossed cable (1.5m)
MY8-AT, MY8-TD, MY8-AE mini YGDAI I/O cards

*1. Measured with a 6 dB/octave filter at 12.7 kHz;

equivalent to a 20 kHz filter with infinite dB/
octave attenuation.

*2. Measured with a 6 dB/octave filter @ 80 kHz.

* Where dB represents a specific voltage, 0 dB

is referenced to 0.775 V rms.

AD824

4

*1. 24-bit linear, 128-times oversampling A/D converters.
*2. XLR-type connectors are electronically balanced (pin 1 = ground, pin 2 = hot, pin 3 = cold).
*3. TRS phone jacks are electronically balanced (tip = hot, ring = cold, sleeve = ground).

* Where dB represents a specific voltage, 0 dB is referenced to 0.775 V rms.

Analog Input

Connection GAIN

Actual Load

Impedance

For Use

with

Nominal

Connector

Input Level

Nominal

Max.

before clip

INPUT 1–8 *

1

INSERT IN 1–8

3k Ω lines

10k W

50–600 Ω

mics &

600 Ω lines

600 Ω lines

-62 dB

+10 dB

-62 dB

(615 µV)

+10 dB

(2.45 V)

+10 dB

(2.45 V)

-48 dB

(3.08 mV)

+24 dB

(12.28 V)

+24 dB

(12.28 V)

XLR-3-31 type

(balanced)*

2

TRS phone jack

(balanced)*

3

*1. TRS phone jacks are electronically balanced (tip = hot, ring = cold, sleeve = ground).

* Where dB represents a specific voltage, 0 dB is referenced to 0.775 V rms.

Analog Output

Connection

Actual Source

Impedance

For Use

with

Nominal

Connector

Output Level

Nominal

Max.

before clip

INSERT OUT 1–8 150 Ω 10k Ω lines

+10 dB

(2.45 V)

+24 dB

(12.28 V)

TRS phone jack

(balanced)*

1

Digital I/O

Connection
COM PC/RS422
COM RS422
WORD CLOCK IN
WORD CLOCK OUT
SLOT

Format

—
—
—
—

mini YGDAI

Level/Impedance

RS232C/RS422

RS422

TTL, 75 Ω (ON/OFF)

TTL, 75 Ω

—

Connector

9-pin D-sub (male)

9-pin D-sub

BNC
BNC

—

ON OFF

POWER

AD CONVERTER

12345678

PEAK

SIGNAL

NOMINAL

PEAK

SIGNAL

+48V

SEL

NOMINAL

+48V

WORD CLOCK

INTERNAL

44.1kHz BNC SLOT48kHz

SEL

dB

GAIN

OFF ON

+48V MASTER

INPUT

(BAL)

OUT

(BAL)

IN

(BAL)

INSERT

COM

AD824

8 2314567

8 3214567

8 4321567

SLOT

OUT

PC RS422

75 IN

ON

OFF

WORD CLOCK

RS422

1

6 7 8 9 10 11 12 13

15 16 17 18 19 20

22

21

23
24

14

2 3 4 5

1

PEAK, NOMINAL & SIGNAL indicators

2

GAIN display

3

GAIN control

4

POWER indicator

5

POWER switch

6

WORD CLOCK indicators

7

WORD CLOCK Source button

8

Channel SEL indicators

9

Channel SEL buttons

10

Channel +48V indicators

11

+48V on/off button

12

+48V MASTER indicator

13

+48V MASTER switch

14

Power cable

15
16

COM RS422 port
COM PC/RS422 switch

17

COM PC/RS422 port

18

WORD CLOCK OUT connector

19

WORD CLOCK 75 ON/OFF switch

20

WORD CLOCK IN connector

21

INPUT (BAL) connectors

22

SLOT

23

INSERT OUT (BAL) connectors

24

INSERT IN (BAL) connectors

PANEL LAYOUT

AD824

5

Front Panel

Rear Panel

VERTER

AD824

6

CIRCUIT BOARD LAYOUT

MAIN

MYSL

HA

JK

AD

AC

Rear panel assembly

Front panel assembly

Power transformer

PN

SW

CN909

CN903

CN906

CN902

CN904

CN905

CN901

CN908CN907

CN101 CN201

CN002

CN001

CN961

CN960

CN962

CN963

CN052 CN053

CN051

CN054

AD824

7

JK

AD

CN103

AD­CN104

AD­CN204

CN203

CN202CN102

CN005

CN004

CN002 CN001

CN003

CN004

CN001

CN003

MYSL

AC

DC

PN

SW

CN002

CN008CN010CN011

CN007

CN006

CN005

CN009

AD824

8

DIMENTIONS

67.5 67.5345

35 35410

430

13

88

H: 97.5

3030

48

(33)

274

10.8

45 17

355

D: 377.6

W: 480

Unit: mm

CH1

INPUT

JK101

INSERT OUT

JK102

CN002

CN101CN102

IC101

CN003

FS

SDATA

OUT1 ~ 8 , FS-AD , 64FS-AD , 256FS-AD , RESET-AD

64FS
256FS
RESET

CN002

CN962

LEVEL

PAD PAD

HA1 HA1

HA2A ,HA2B ,HA2C

+48V

Q102

RY101

IC101

IC102

PAD HA2

A / D

PERK
NOMINAL
SIGNAL

HA1

BA

INSERT IN

JK103

IC103

77 1

IC104

IC104

AINL+
AINL–

IC105

AK5342

BUFF

IC008

A / D

IC305

AK5342

AINR+

AINR–

CH2

CH3

CH4

D-FF

CH5

CH6

CH7

CH8

ADD-0~7

ADD-0~7

RST-HA , A1-HA , A2-HA , A3-HA , CS-HA

CPU

SH7042A

IC911

IC916

IC919

PE4

TX, RX

LOCK44

9.8304MHz

LOCK48

MUTE

COMA-TX, TX-COMB

256k SRAM

IC923

256k SRAM

IC924

8M ROM

IC927

BUFF

IC932

CN901CN054

CN051b

CN051a

CN901 OUT3/4,OUT7/8

OUT1/2,OUT5/6

CN904

CN905

CN961

SWA

SWA,SWB ECA,ECB+48

CN960

CN902CN053

CN902

CN053
CN054

BUFF

IC933

MUTE

PC/RS422
RS422

IC901

COM B/SLOT

SELECT

IC903

INT/EXT
SELECT

IC913

SELECT

IC910

D-FF

IC907

INT 48kHz

X902

INT 44.1kHz

X901

WORD

CLOCK

SELECT

IC921

PLL &

TIMING

GEN.

IC922

CN903

CN909

PC

ON

OFF

RS422

EXT-DIRIN
XI

CN907

CN908

RESET

SLOT

SLOT

D-FF

D-FF

RES

EXTAL

44.1kHz
48kHz
BNC
SLOT

WORD CLOCK

INTERNAL

+48V x 8

SEL x 8

SEL1~8

+48V
MASTER

Rotary Encoder

GAIN

dB

OUT
IN

JK902

JK901

MAIN

MYSL

HA

HA

AD

AD

A / D

IC505

AK5342

AD

A / D

IC705

AK5342

AD

PN

AD

PN

JK

AD

COM

WORD CLOCK

KEC-92536

IC001

–006

4

15–18
6
7
9
8

5

25
24

EC960

IC928,

929

84

74

87

9

5

47,48
90

88

15

15

12

3

11 3,9

36 36

56

5,6

19

3,5

9,15

2,4

3,4

7

7

11

SW901

BLOCK DIAGRAM

AD824

9

HA

<Top View>

Top cover

IF plate

[460]

[530]

[300] [450] X16[290]

[A]

[500] X14

[310]

[500]: Bind Head Tapping Screw-B A4.0X8 MFZN2BL (VC688800)

Fig. 1

<Rear View>

[330]: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)
[390]: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)
[530]: Bind Head Screw A4.0X12 MFZN2BL (VP156900)

Fig. 2

[A]

MAIN

[390]X6[330][330]

3. JK Circuit Board and AD Circuit Board

3-1 Remove the top cover. (See procedure 1.)
3-2 Remove the HA circuit board. (See procedure 2.)
3-3 Remove the two (2) screws marked [430]. The AD shield

sheet can then be removed. (Fig. 4)

3-4 Remove the six (6) screws marked [390] and the two (2)

screws marked [400]. The JK circuit board can then be
removed. (Fig. 2 and Fig. 3)

4. AD Circuit Board

4-1 Remove the top cover. (See procedure 1.)
4-2 Remove the HA circuit board. (See procedure 2.)
4-3 Remove the JK circuit board. (See procedure 3.)
4-4 Remove the six (6) screws marked [330], the two (2)

screws marked [350] and the two (2) screws marked
[370]. The AD circuit board can then be removed. (Fig. 2
and Fig. 3)

AD824

10

DISASSEMBLY PROCEDURE

1. Top Cover

1-1 Remove the fourteen (14) screws marked [500]. The top

cover can then be removed. (Fig. 1)

2. Circuit Boards and Units

Remove the top cover, each circuit board and unit can
then be removed.

Circuit Board and Unit

MAIN

HA

DC Assembly
Power Transformer

A
290
300
310
450
460
210
190

Screw
Bonding Screw 4.0X8 MFZN2BL (VS154500)
Bonding Screw 3.0X6 MFZN2BL (VS863000)
Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
Bonding Tapping Screw 3.0X8 MFZN2BL (VN41330)
Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
Bind Head Tapping Screw-B A4.0X6 MFZN2BL (VC688800)
Bind Head Tapping Screw-B A4.0X6 MFZN2BL (VC688800)

4
1
2
5

16

4
2
4

Ref. No. Screw QTY

2
2
2
1
2
1
5
5

Fig.

AD824

11

<Top View>

[400]

[350]

[370]

[370]

JK

AD

[350]: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)
[370]: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)
[400]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)

[430]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)

Fig. 3 Fig. 4

<Top View>

[400]

[430] [430]

AD shield sheet

5. MYSL Circuit Board

* Note that remove card before following operation.
5-1 Remove the top cover. (See procedure 1.)
5-2 Remove the MAIN circuit board. (See procedure 2.)
5-3 Remove the two (2) screws marked [530]. The IF plate

can then be removed. (Fig. 2)

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

assembly can then be removed. (Fig. 5)

5-5 Remove the two (2) screws marked [240]. The MYSL

circuit board can then be removed. (Fig. 5)

6. AC Circuit Board

6-1 Remove the top cover. (See procedure 1.)
6-2 Remove the MAIN circuit board. (See procedure 2.)
6-3 Remove the three (3) screws marked [50A] and the two

(2) screws marked [110A]. The AC circuit board can then
be removed. (Fig. 6)

* The fuse is not a part of the AC circuit Board. When you

replace the AC circuit board, you should remove the fuse
from the board, and put it back into the holder on the new
board.

7. DC Circuit Board

7-1 Remove the top cover. (See procedure 1.)
7-2 Remove the DC assembly. (See procedure 2.)
7-3 Remove the four (4) screws marked [60]. The transistor

holder can then be removed. (Fig. 7)

7-4 Remove the three (3) screws marked [40]. The DC circuit

board can then be removed. (Fig. 7)

* The four fuses are not part of the DC circuit Board. When

you replace the DC circuit board, you should remove the
fuses from the board, and put it back into the holder on the
new board.

[60]

[140]

[140]

[140]

DC

[40]: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)
[60]: Pan Head Screw SP4.0X8 MFZN2Y (EL200020)

Fig. 7

[140]: Oval Head Screw B4.0X10 MFZN2BL (V6221000)

Fig. 8

• DC Assembly

[40]

[40]

[40]

Transistor holder

Rack mount angle

Rack mount angle

<Right View>

<Left View>

[140]

Fuses

Fuses

AD824

12

8. PN Circuit Board and SW Circuit Board

8-1 Remove the top cover. (See procedure 1.)
8-2 Remove the six (6) screws marked [140]. The right and

left rack mount angles can then be removed. (Fig. 8)
8-3 Remove the knob marked [110B]. (Fig. 9)
8-4 Remove the six (6) screws marked [80]. The front panel

can then be removed. (Fig. 9)

AC

[250]: Bind Head Screw 4.0X8 MFZN2BL (EG340360)
[260]: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)

Fig. 5

<Top View>

DC assembly

OPT assembly

MYSL

Power transformer

[190]

[260]

[260]

[210]

[250]

[250]

[210]

[110A] X2

Fuse

AC

[50A]: Bind Head Tapping Screw-B A4.0X8 MFZN2BL (VC688800)
[110A]: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)

Fig. 6

• Rear Panel Assembly

[50A] X3

Fig. 10

Battery VN103500

VN103600(Battery holder for VN103500)

Notice for back-up battery removal
Push the battery as shown in figure,
then the battery will pop up.

Druk de batterij naar beneden zoals
aangeven in de tekening, de batterij
springt dan naar voren.

Battery

Battery holder

MAIN

[80]

PN

SW

[80]: Oval Head Screw 4.0X8 MFZN2BL (VS153600)

Fig. 9

[30]: Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230)
[50B]: Bonding Screw 3.0X6 MFZN2BL (VS863000)

<Front View>

[80]

[30]

[50B]

[50B]

[30]

[80][80] [110B]

[90]

Front panel

[30]

AD824

13

8-5 PN Circuit Board:

Remove the four (4) screws marked [30]. The PN circuit
board can then be removed. (Fig. 9)

8-6 SW Circuit Board:

Remove the PSW knob marked [90]. (Fig. 9)
Remove the two (2) screws marked [50B]. The SW circuit
board can then be removed. (Fig. 9)

9. Replacement of the Lithium Battery

9-1 Remove the top cover. (See procedure 1.)
9-2 Remove the MAIN circuit board. (See procedure 2.)
9-3 The lithium battery can be replacement on the MAIN

circuit board. (Fig. 10)

* The lithium battery is not a part of the MAIN circuit

board. When you replace the MAIN circuit board, remove
the lithium battery and install it in the new circuit board.

AD824

14

LSI PIN DESCRIPTION

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

I

I

I

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

I
I

O
O

I
I

I

O
O

O
O

I
I

System reset input
VCO section power (+5 V)
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: IC921, 922

PIN
NO.

I/O FUNCTIONNAME

PIN
NO.

I/O FUNCTIONNAME

1
2
3

4

5
6

7
8

9
10
11
12

13
14

VREFL

GNDL

VCOML

AINL+

AINL­ZCAL

VD

DGND

CAL

/RST
SMODE2
SMODE1

LRCK
SCLK

O

-

O

I

­I

-

-

O

I
I
I

I/O
I/O

L ch standard voltage output (+3.75 V)
L ch Ground
L ch common voltage (+2.5 V)

L ch analog (+) input

L ch analog (-) input
Zero calibration
“L”: VCOML,VCOMR
“H”: Analog input (AINL+/-,AINRR+/-)
Power supply for digital
Ground for digital
Calibration status
Reset
Serial interface mode select
MSB first, 2’s compliment

L/R ch select clock
Serial data clock

15
16
17

18

19
20

21
22
23
24
25
26

27
28

SDATA

FSYNC

MCLK

CMODE

HPFE

TEST

BGND
AGND

VA

AINR-

AINR+

VCOMR

GNDR

VREFR

O

I/O

I

I

I
I

-

-

­I
I

O

-

O

Serial data output
Frame synchronization clock
Master clock input
CMODE=“H”:384 fs
CMODE=“L”:256 fs
Master clock select
“L”: MCLK=256 fs (12.288 MHz @fs=48 kHz)
“H”: MCLK=384 fs (18.432 MHz @fs=48 kHz)
HPF enable “L”: OFF “H”: ON
TEST pin
Connect it with DGND.

Ground
Ground for analog
Power supply for analog (+5 V)
R ch analog (+) input
R ch analog (-) input
R ch common voltage (-2.5 V)

R ch ground
R ch standard voltage output (+3.75 V)

AK5392-VS-E2 (XV065A00) ADC (Analog to Digital Converter)

SMODE2

L

L
H
H

SMODE1

L
H
L
H

MODE

Slave mode
Master mode
Slave mode
Master mode

LRCK

H/L
H/L
L/H
L/H

AD: IC105, 305, 505, 705

AD824

15

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
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

I

I

I

I

I

I

I

I

I

I

I

O

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

I

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

HD6477042AF28 (XV731A00) CPU MAIN: IC911

AD824

16

IC BLOCK DIAGRAM

HD74LV04AFPEL (IS000400)
HD74LVU04AFPEL (XY102A00)

Hex Inverter

MAIN: IC914,920

HD74LV08AFPEL (IS000800)
Quad 2 Input AND

MAIN: IC912

HD74LV32AFPEL (IS003200)
Quad 2 Input OR

MAIN: IC926

HD74LV74AFPEL (IS007400)
Dual D-Type Flip-Flop

MAIN: IC907,919

SN74LV138ANSR (IS013810)
SN74LV138AFPEL (IS013800)

3 to 8 Demultiplexer

MAIN:
HA:

SN74LV139ANSR (IS013910)
Dual 2 to 4 Demultiplexer

MAIN: IC915

TC74HC153AFEL (XY309A00)
Dual 4 to 1 Data Selectors

MAIN: IC910,913

HD74LV157AFPEL (IS015700)
Quad 2 to 1 Multiplexer

MAIN: IC935

SN74LV174ANSR (IS0174100)
Hex D-Type Flip-Flop

MAIN: IC929

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

INPUTS OUTPUTS

PR CLR CLK D Q Q

L
H
H
L
H
Q

O

H
L
H
H
L
Q O

X
X
X
H
L
X

X
X
X
f
f
L

H
L
L
H
H
H

L
H
L
H
H
H

1

2

3

4

5

6

7

1CLR

1D

1CK
1PR

1Q

1Q

GND

14

13

12

11

10

9

8

VCC

2CLR

CLR

2D

D

2CK

CK

2PRPR

2Q

2Q

Q

Q

CLR

D

CK

PR

Q

Q

IC917
IC009

1

2

3

4

5

6

7

A

A

Select

Enable

Output

Output

B

B

C

C

G2A

G2A

G2B

G2B

G1

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

1G SELECT

STROBE B

OUTPUT 1Y

1G

IC3

IC2

IC1

IC0

1Y

16

15

14

13

12

11

10

Vcc
SELECT 2G

STROBE A

8

GND

9

OUTPUT 2Y

2C0

2Y

2C1

2C2

2C3

2G

B
B

B
B

A

A

A

A

DATA

INPUTS

DATA
INPUTS

1

2

3

4

5

6

7

SELECT

1A

1A

1B

1B

1Y

1Y

2A

2A

2B

2B

2Y

2Y

16

15

14

13

12

11

10

Vcc

STROBE

G

4A

S3Y

4A

4B

4B

4Y

4Y

3A

3A

3B

3B

8

GND

9

3Y

Q

Q

DC K C K

C K

DC K

GG

CLEAR

1Q

1D

2D
2Q

3D
3Q

GND

1 16

2 15

3 14

4 13

5 12

6 11

7 10

8 9

Vcc
6Q

6D

5D
5Q

4D
4Q

CK

Q

D

GG

Q

DC K

G

C K

Q

D

G

Q

D

AD824

17

HD74LV245AFPEL (IS024500)

Octal 3-State Bus Transceiver

MAIN:
AD:
HA:

HD74LV273AFPEL (IS027300)
Octal D-Type Flir Flop

MAIN:
HA:

SN75121NSR (XU816A00)
Dual Line Driver

MAIN: IC930

SN75124NS (XN976A00)
Triple Line Receiver

MAIN: IC902

SN75C1168NSR (XU073A00)
Line Driver / Receiver

MAIN: IC903

HD74HC4053AF(EL) (XY879A00)
Triple 2-Channel
Multiplexer/Demultiplexer

HA: IC102,202,302,402,502

TC7S04F (XM182A00)
Inverter Gate

AD: IC007

TC7S08F (XM616A00)
2 Input AND Gate

HA: IC007

NJM072M (XC458A00)
Dual Operational Amplifier

HA: IC103,203,303,403,503,603,703,803

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

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

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

2C

2B

2D

1A

1B

1C

1D

1E

1F

IC901,904-906,908,909,932-934
IC008
IC008

IC925-928
IC001-006

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

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

1

Switches IN/OUT

2

3

4

5

6

7

8

- do. - Y0

- do. - Z1

Z

Z0

Commons OUT/IN

Swiches IN/OUT

Control Inhibit

-DC Voltage Supply

- do -

VDD

Y

X

X1

X0

A

B

C

9

10

11

12

13

14

15

16

+DC Voltage Supply

Commons OUT/IN Y

- do. - X

Swiches IN/OUT X1

- do - X0

Control Input A

- do. - B

- do. - C

Y1

Y0

Z1

Z

Z0

INH

VEE

V

SS

Y1

1

2

3

5

4

NC

VSS

VDD

OUT

IN

1 5

2

3

4

IN B

VSS

VDD

OUT

IN A

1A2 3 4 5 6 7 8 9

+V -IN -V

+INOUT

AAA

+V-IN

+IN OUT

BBB

-

+

B

-

+

AD824

18

NJM2082M(T1) (XN797A00)
NJM2068MD-T1 (XJ553A00)
NJM4556AL (XP844A00)

Dual Operational Amplifier

MAIN:
AD:

HA:
PN:
JK:

1

2

3

4-V

8

7

6

5

Output A +V

Non-Inverting

Input A

-DC Voltage Supply

+DC Voltage
Supply

Output B
Inverting

Input B
Non-Inverting
Input B

Inverting

Input A

+-

+-

IC918
IC103,104,203,204,303,304,403,404,
503,504,603,604,703,704,803,804
IC101,201,301,401,501,601,701,801
IC101,301,501,701
IC101,201,301,401,501,601,701,801

AC, SW(H,W,B): 3NA-V579150

AC, SW(J,U,V): 3NA-V579140

POWER
ON/OFF

1
1

SW Circuit Board (J, U, V) AC Circuit Board (J, U, V)

SW Circuit Board (H, W, B) AC Circuit Board (H, W, B)

Power transformer

AC cord

POWER
ON/OFF

Power transformer

AC cord

CIRCUIT BOARDS

AD824

19

AC Circuit Board (J, U, V) (XY031C0)······································································· 19
AC Circuit Board (H,W,B) (XY032C0) ······································································· 19
AD Circuit Board (XY028A0)······················································································ 28
DC Circuit Board (J, U, V) (XY031C0)······································································· 34
DC Circuit Board (H,W,B) (XY032C0) ······································································· 35
HA Circuit Board (XY029A0)······················································································ 24
JK Circuit Board (XY028A0) ······················································································ 29
MAIN Circuit Board (XY030A0)·················································································· 20
MYSL Circuit Board (XY030A0)················································································· 21
PN Circuit Board (XY027B0)······················································································ 32
SW Circuit Board (J, U, V) (XY031C0) ······································································ 19
SW Circuit Board (H,W,B) (XY032C0)······································································· 19

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

Component side

Component side

Component side

Component side

to AD-CN003

MAIN Circuit Board

A'

A

3NA-V579130

to HA-CN002to MYSL-CN054to PN-CN960to PN-CN961 to MYSL-CN053

from DC-CN010

AD824

20

INOUT

RS422 RS422PC

WORD CLOCK

from MAIN-CN902

75

OFFON

MYSL Circuit Board

A'

A

MAIN, MYSL: 3NA-V579130

Battery VN103500

VN103600(Battery holder for VN103500)

Notice for back-up battery removal
Push the battery as shown in figure,
then the battery will pop up.

Druk de batterij naar beneden zoals
aangeven in de tekening, de batterij
springt dan naar voren.

Battery

Battery holder

COM

from DC-CN008 from MAIN-CN901

AD824

21

Component side

Component side

MAIN Circuit Board

B'

B

3NA-V579130

AD824

22

E'BB'

MAIN, MYSL: 3NA-V579130

MYSL Circuit Board

AD824

23

Pattern side

Pattern side

3NA-V579110

INPUT (BAL)

123 4 5 67 8

1

HA Circuit Board

C'

C

AD824

24