Sony LLC-8000A Manuale utente

LL CONTROL CONSOLE

LLC-8000A

SERVICE MANUAL

1st Edition

STUDENT EXPANSION BOARD

LU-816A

LL CONFERENCE BOARD

LU-800B

LL CONFERENCE BOARD

LU-801B

This service manual does not show some of the items that

are common to the model LLC-8000. Therefore, use this

Service Manual together with the LLC-8000 Service Manual

(9-977-680-01).

Printed in Japan

Sony Corporation 1999. 6 16

LLC-8000A

LU-800B

LU-801B

LU-816A (SY) E

9-955-172-01

The material contained in this manual consists of

information that is the property of Sony Corporation.

Sony Corporation expressly prohibits the duplication of

any portion of this manual or the use thereof for any

purpose other than the operation or maintenance of the

equipment described in this manual without the express

written permission of Sony Corporation.

Le matériel contenu dans ce manuel consiste en

informations qui sont la propriété de Sony Corporation.

Sony Corporation interdit formellement la copie de

quelque partie que ce soit de ce manuel ou son emploi

pour tout autre but que des opérations ou entretiens de

l’équipement à moins d’une permission écrite de Sony

Corporation.

Das in dieser Anleitung enthaltene Material besteht aus

Informationen, die Eigentum der Sony Corporation sind.

Die Sony Corporation untersagt ausdrücklich die

Vervielfältigung jeglicher Teile dieser Anleitung oder den

Gebrauch derselben für irgendeinen anderen Zweck als

die Bedienung oder Wartung der in dieser Anleitung

beschriebenen Ausrüstung ohne ausdrückliche

schriftliche Erlaubnis der Sony Corporation.

LLC-8000A

Table of Contents

1. Service Overview

1-1. Relative Manuals.........................................................................................1-1

1-2. Main Changes Made from LLC-8000 System to LLC-8000A System ......1-1

2. Self-Diagnosis

2-1. CPU-240 Board ...........................................................................................2-1

2-1-1. POWER ON Indicator................................................................2-1

2-1-2. Self-diagnosis of the CPU-240 Board ........................................2-2

2-2. Operation Unit.............................................................................................2-5

2-3. ASW-58 Board (LU-800B/LU-801B) ........................................................2-6

2-3-1. LED Indicators When the Main Power Is Turned On................2-6

2-3-2. Self-diagnosis of the ASW-58 Board.........................................2-7

2-3-3. Troubleshooting the ASW-58 Board (LU-800B/LU-801B) ....2-12

3. Semiconductor Pin Assignments

4. Spare Parts

4-1. Notes on Repair Parts..................................................................................4-1

4-2. Exploded Views ..........................................................................................4-2

4-3. Electrical Parts List .....................................................................................4-8

4-4. Packing Materials......................................................................................4-36

5. Circuit Description and Block Diagrams

5-1. Signal Flow in LLC-8000A System............................................................5-1

5-2. Circuit Description ......................................................................................5-1

5-3. Block Diagrams...........................................................................................5-2

5-3-1. Audio..........................................................................................5-2

5-3-2. Audio (ASW-58 Board) .............................................................5-4

5-3-3. DC Power ...................................................................................5-7

5-3-4. ASW-58 Digital Signal ..............................................................5-8

5-3-5. Random Pair and Group Conference Control ..........................5-10

2LLC-8000A

6. Analog Signal Flow

6-1. Standard Type .............................................................................................6-2

6-2. Add-in Type 1 .............................................................................................6-4

6-3. Add-in Type 2 .............................................................................................6-6

6-4. Add-in Type 3 .............................................................................................6-8

7. Schematic Diagrams and Board Layouts

Frame ......................................................................................................................7-3

ASW-58 ............................................................................................................7-4, 16

CPU-240 .........................................................................................................7-10, 18

IF-645A ..........................................................................................................7-12, 20

CN-1810 .........................................................................................................7-13, 19

LED-288 ...............................................................................................................7-14

1-1

LLC-8000A

Section 1

Service Overview

This section describes only the differences between the LLC-8000A and LLC-8000. Therefore, read

Section “3. Service Overview” of the LLC-8000 Service Manual (9-977-680-01) together with this

manual.

1-1. Relative Manuals

Beside this “LLC-8000A Service Manual”, the following manuals are available for LLC-8000A System.

.Operation Manual LLC-8000A 3-866-264-11 (E)

3-866-264-21 (F)

3-866-264-31 (S)

3-866-264-41 (I)

ER-8020 3-858-847-11 (E)

3-855-847-21 (F)

3-855-847-31 (S)

PTU-8 3-859-429-11

.Getting Started Guide MLS-8000A 3-866-424-11

.Installation Manual LLC-8000A 3-202-126-11

MLS-8000A 3-202-337-01

LU-800B/801B 3-202-118-11

.Service Manual LLC-8000 9-977-680-01

ER-8020 9-977-681-01

EA-80 9-955-136-01

PTU-8 9-977-682-01

1-2. Main Changes Made from LLC-8000 System to LLC-8000A System

.The IF-645 board is replaced by the IF-645A board.

.The CN-1810 board is newly added.

.The optional board (ASW-58) is newly added. (LU-800B, LU-801B)

2-1

LLC-8000A

Section 2

Self-Diagnosis

The self-diagnosis helps troubleshooting and field-servicing.

The self-diagnosis software of the LLC-8000A consists of the following programs.

.Self-diagnosis of the CPU-240 board

.Self-diagnosis of the Operation Unit

.Self-diagnosis of the ASW-58 board (LU-800B/LU-801B)

2-1. CPU-240 Board

2-1-1. POWER ON Indicator

The LED’s on the CPU-240 board are illuminated, as follows:

D1 : CPU Run indicator

Flashes in red when CPU main routine works as intended.

D2 : +5 V power supply indicator

Lights in green when the voltage of +5 V is provided.

D18 : Power key input LED

Lights in red when the power key of the operation unit is pressed.

D19 : Signal transmission system indicator

Lights in red when signal transmission system works as intended for the number of students that

are registered on installation setting stage.

CPU-240 Board

CPU

IC60

NORM DIAG

D19 D18 D1 D2

+5 V Power supply indicator (green)

CPU run indicator (red)

Power key input LED (red)

Signal transimission system indicator (red)

2-2 LLC-8000A

2-1-2. Self-diagnosis of the CPU-240 Board

Remove the CPU-240 board with the main power off. Exchange IC43 with the self-diagnosis ROM.

Connect the checker tool. Set the switch S1 to the DIAG position. Then turn on the main power.

The self-diagnosis software of the CPU-240 board starts up.

Self-diagnosis ROM (Servicing use only)

IC M27C512-C8000AV110 : 8-759-588-82

Checker

Fabricate the checker tool as shown below for troubleshooting and field-servicing the CPU-240 board.

2-1. Self-Diagnosis of the CPU-240 Board

TXB5

CN5

RXB5

23456

10121314 9 811

+5V

GND

74HC00

O10

O11

O12

O13

O14

O15

O16

O17

O18

O19

O20

O21

O22

O23

O24

O25

O26

O27

O28

O29

O30

O31

O32

O33

O34

O35

O36

O37

O38

O39

O40

CN1

O10

O11

O12

O13

O14

O15

O16

O17

O18

O19

O20

O21

O22

O23

O24

O25

O26

O27

O28

O29

O30

O31

O32

O33

O34

O35

O36

O37

O38

O39

O40

CN2

O10

O11

O12

O13

O14

O15

O16

O17

O18

O19

O20

O21

O22

O23

O24

O25

O26

O27

O28

O29

O30

O31

O32

O33

O34

O35

O36

O37

O38

O39

O40

CN3

O10

O11

O12

O13

O14

O15

O16

O17

O18

O19

O20

O21

O22

O23

O24

O25

O26

O27

O28

O29

O30

O31

O32

O33

O34

O35

O36

O37

O38

O39

O40

CN4

TXB3

RXB3

TXB4

RXB4

TXB2

RXB2

TXB1

RXB1

O13

O25

O12

O24

O11

O23

O10

O22

O21

O20

O19

O18

O17

O16

O15

O14

CN6

KD2

KD1

KD0

KD3

AS3

AS5

AS2

AS0

AS1

DS0

PCSEL1

AS6

AS7

AS4

CN7

10K

+5V

KD3

KD2

KD1

KD0

+6V

DS0

AS7

AS6

AS5

AS4

AS3

AS2

AS1

AS0

PCSEL1

+5V

GND

A+5V

GND

+12V

AGND

_12V

+6V

_6V

+15V

2-3

LLC-8000A

Connection

2-1. Self-Diagnosis of the CPU-240 Board

Exchange IC43 with the self-diagnosis ROM.

CN1

CN2

CN3

CN4

CN5 S1

NORM DIAG ROM

IC43

CN8 CN6

CN7

CPU-240 Board

DTR

DCD

RXD

RTS

TXD

CTS

POWER +5 V

±6 V

±12 V

±15 V

Connect cable Connect cable

Shorting

Connector

CPU-240 Board Checker

CN8

9P.D-SUB connector

Shorting connector

CN7 CN7

Connect cable

25P.D-SUB connector

CN1

CN2

CN3

CN4

CN5

CN6

CN8

CN1

CN2

CN3

CN4

CN5

CN6

2-4 LLC-8000A

Operation

Servicing on the CPU-240 digital control system is performed with the nine (9) key switches and ten (10)

LED’s, while that on the CPU-240 audio system is done with the CPU-240 board built into the control unit.

First set the key switches, as shown in Section Key Data, according to the check mode, and turn the

power switch on. Refer to Section LED Display and perform the servicing. The self-diagnosis software

begins to work in the selected check mode right after the power switch is turned on.

Perform the digital overall check first and locate systems in which troubles are supposed to be involved.

Be sure to turn off and on the power switch or reset the CPU when the check mode is switched.

Key Data

No. b8 b7 b6 b5 b4 b3 b2 b1 b0 HEX Check Mode

KD3 KD2 KD1 KD0 T4 T3 T2 T1 T0 CODE

1000100000020Digital overall check

(No.2 to 11 once)

2000100001021ROM check (once)

3000100010022RAM check (repeat)

4000100100024NV-RAM check (once)

5000101000028ICMemory check (once)

6001000001041SIO CN1 check (repeat)

7001000010042SIO CN2 check (repeat)

8001000100044SIO CN3 check (repeat)

9001001000048SIO CN4 check (repeat)

10001010000050SIO RS232C check (repeat)

1100101111105FSIO CN5 check (repeat)

No. b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 Check Mode

PCSEL1

DS0 AS7 AS6 AS5 AS4 AS3 AS2 AS1 AS0

1 ROM RAM

NU-RAM

IC MEN

SIO OFF

RS232C

OFF OFF OFF Digital overall check (once)

OK OK OK OK OK 1 OK 1 1 1

CHECK

OFF OFF ON OFF OFF OFF OFF OFF ON ROM check (once)

OK110111110

CHECK

OFF OFF ON OFF OFF OFF OFF ON OFF RAM check (repeat)

OK110111101

CHECK

OFF OFF ON OFF OFF OFF ON OFF OFF NV-RAM check (once)

OK110111011

CHECK

OFF OFF ON OFF OFF ON OFF OFF OFF IC Memory check (once)

OK110110111

CHECK

OFF ON OFF OFF OFF OFF OFF OFF ON SIO CN1 check (repeat)

OK101111110

CHECK

OFF ON OFF OFF OFF OFF OFF ON OFF SIO CN2 check (repeat)

OK101111101

CHECK

OFF ON OFF OFF OFF OFF ON OFF OFF SIO CN3 check (repeat)

OK101111011

CHECK

OFF ON OFF OFF OFF ON OFF OFF OFF SIO CN4 check (repeat)

OK101110111

CHECK

OFF ON OFF OFF ON OFF OFF OFF OFF SIO RS232C check (repeat)

OK101101111

CHECK

OFF ON OFF ON OFF OFF OFF OFF ON SIO CN5 check (repeat)

OK101011110

LED Display

LED

1. CHECK OK : LED ON

2. ON : LED ON

3. OFF : LED OFF

2-1. Self-Diagnosis of the CPU-240 Board

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