Marantz MAR770, DR-6000, MAR775 User Manual

Service

DR6050 /F1N, /K1G, /N1G

/F1B, /K1B, /N1B, /U1B

Manual

www.electronicsrepair.net

STANDBY

POWER ON/OFF

REMARK : This service manual explains them by extracting specifications

designed for the model DR6050 only. The explanation for CD-R module

"MAR775" (Loader : CDL4009' + CD-R Main board) is not mentioned on this

service manual.

The CD-R module information is described in the service manual of CD-R

modules <MAR770/MAR775>.

SECTION PAGE

MAIN UNIT

1. Servicing the DR6000 ................................................................................................................................ 1

2. TECHNICAL SPECIFICATIONS ............................................................................................................... 3

3. WARNINGS .............................................................................................................................................. 4

4. SERVICE HINTS ....................................................................................................................................... 5

5. SERVICE TOOLS..................................................................................................................................... 5

6. SIAGNOSTIC SOFTWARE ....................................................................................................................... 6

7. FAULTFINDING TREES ...................................................................................................... ................... 10

8. FAULTFINDING GUIDE .......................................................................................................................... 16

9. WIRING DIAGRAM ................................................................................................................................. 32

10. BLOCK DIAGRAM ................................................................................................................................... 35

11. SCHEMATIC DIAGRAM AND PARTS LOCATION................................................................................. 37

12. EXPLODED VIEW AND PARTS LIST............................................................................................. ........ 43

13. ELECTRICAL PARTS LIST.................................................................................................... ................. 46

CD RECORDER DR6050

REC

Compact Disc Recorder

DR6050DR6050

Recordable

ReWritable

PLAY/PAUSESTOP

OPEN/ CLOSE

CDR

SOURCEREC TYPE

ERASE FINALIZE

OPEN/ CLOSE

CD DJ MODE

PLAY/PAUSESTOP

TABLE OF CONTENTS

EASY JOG

CANCEL/DELETESTORE/MENU

PHONES

PUSH ENTER

Printed in Japan

Please use this service manual with referring to the user guide ( D.F.U. ) without fail.

DR6050

386K855010 MIT 3120 785 22370 First Issue 2000.12

MARANTZ DESIGN AND SERVICE

MARANTZ AMERICA, INC.

Using superior design and selected high grade components, MARANTZ company has created the ultimate in stereo sound. Only original MARANTZ parts can insure that your MARANTZ product will continue to perform to the specifications for which it is famous. Parts for your

MARANTZ equipment are generally available to our National Marantz Subsidiary or Agent.

ORDERING PARTS :

Parts can be ordered either by mail or by Fax.. In both cases, the correct part number has to be specified. The following information must be supplied to eliminate delays in processing your order :

1. Complete address

2. Complete part numbers and quantities required

3. Description of parts

4. Model number for which part is required

5. Way of shipment

6. Signature : any order form or Fax. must be signed, otherwise such part order will be considered as null and void.

USA

MARANTZ AMERICA, INC 440 MEDINAH ROAD ROSELLE, ILLINOIS 60172 USA PHONE : 630 - 307 - 3100 FAX : 630 - 307 - 2687

AMERICAS

SUPERSCOPE TECHNOLOGIES, INC. MARANTZ PROFESSIONAL PRODUCTS 2640 WHITE OAK CIRCLE, SUITE A AURORA, ILLINOIS 60504 USA PHONE : 630 - 820 - 4800 FAX : 630 - 820 - 8103

AUSTRALIA

QualiFi Pty Ltd, 24 LIONEL ROAD, MT. WAVERLEY VIC 3149 AUSTRALIA PHONE : +61 - (0)3 - 9543 - 1522 FAX : +61 - (0)3 - 9543 - 3677

NEW ZEALAND

WILDASH AUDIO SYSTEMS NZ 14 MALVERN ROAD MT ALBERT AUCKLAND NEW ZEALAND PHONE : +64 - 9 - 8451958 FAX : +64 - 9 - 8463554

EUROPE / TRADING

MARANTZ EUROPE B.V. P.O.BOX 80002, BUILDING SFF2 5600 JB EINDHOVEN THE NETHERLANDS PHONE : +31 - 40 - 2732241 FAX : +31 - 40 - 2735578

AUSTRALIA

TECHNICAL AUDIO GROUP PTY, LTD 558 DARLING STREET, BALMAIN, NSW 2041, AUSTRALIA PHONE : 61 - 2 - 9810 - 5300 FAX : 61 - 2 - 9810 - 5355

THAILAND

MRZ STANDARD CO.,LTD 746 - 754 MAHACHAI ROAD., WANGBURAPAPIROM, PHRANAKORN, BANGKOK, 10200 THAILAND PHONE : +66 - 2 - 222 9181 FAX : +66 - 2 - 224 6795

TAIWAN

PAI- YUING CO., LTD. 6 TH FL NO, 148 SUNG KIANG ROAD, TAIPEI, 10429, TAIWAN R.O.C. PHONE : +886 - 2 - 25221304 FAX : +886 - 2 - 25630415

BRAZIL

PHILIPS DA AMAZONIA IND. ELET. ITDA

CENTRO DE INFORMACOES AO

CEP 04698-970 SAO PAULO, SP, BRAZIL PHONE : 0800 - 123123 FAX : +55 11 534. 8988

(Discagem Direta Gratuita)

CANADA

LENBROOK INDUSTRIES LIMITED 633 GRANITE COURT, PICKERING, ONTARIO L1W 3K1 CANADA PHONE : 905 - 831 - 6333 FAX : 905 - 831 - 6936

SINGAPORE

WO KEE HONG DISTRIBUTION PTE LTD 130 JOO SENG ROAD #03-02 OLIVINE BUILDING SINGAPORE 368357 PHONE : +65 858 5535 / +65 381 8621 FAX : +65 858 6078

MALAYSIA

WO KEE HONG ELECTRONICS SDN. BHD. SUITE 8.1, LEVEL 8, MENARA GENESIS, NO. 33, JALAN SULTAN ISMAIL, 50250 KUALA LUMPUR, MALAYSIA PHONE : +60 3 - 2457677 FAX : +60 3 - 2458180

JAPAN

MARANTZ JAPAN, INC.

Technical

35- 1, 7- CHOME, SAGAMIONO SAGAMIHARA - SHI, KANAGAWA JAPAN 228-8505 PHONE : +81 42 748 1013 FAX : +81 42 741 9190

KOREA

MK ENTERPRISES LTD. ROOM 604/605, ELECTRO-OFFICETEL, 16-58, 3GA, HANGANG-RO, YONGSAN-KU, SEOUL KOREA PHONE : +822 - 3232 - 155 FAX : +822 - 3232 - 154

SHOCK, FIRE HAZARD SERVICE TEST :

CAUTION : After servicing this appliance and prior to returning to customer, measure the resistance between either primary AC

cord connector pins ( with unit NOT connected to AC mains and its Power switch ON ), and the face or Front Panel of product and controls and chassis bottom. Any resistance measurement less than 1 Megohms should cause unit to be repaired or corrected before AC power is applied, and verified before it is return to the user/customer. Ref. UL Standard No. 1492.

In case of difficulties, do not hesitate to contact the Technical Department at above mentioned address.

001120MIT

1. Servicing the DR6050

1.1 INTRODUCTION:

The DR6050 is the consumer version of a CD recorder, this means that the SCMS (Serial Copy Management System) is included. The DR6050 can only record on the Audio CDRs (Consumer Use). The DR6050 is suitable for recording and playback of CD-RW discs (CD-Re Writable disc).

Playback & Recording and Disc

Disc

Player/Recorder

Audio CD Player

Current products Ex:CD-17

Audio CD Player

CD-RW playback Ex:CD-17MK II

CD-RW Recorder

For Professional Ex:CDR630/640

CD-RW Recorder

For Consumer Ex:DR6050

CDR

Consumer Disc

Finalized

non Finalized

Professional Disc

Finalized Finalized

non Finalized

Consumer Disc

Finalized

PP no P no no no no no - PP no P no P no P no - P P P/R P P/R P/R P/R P/R P/R no P P P/R P P P/R P/R P YES

CD-RW

non Finalized

Professional Disc

non Finalized

SCMS

Consumer : For Digital Audio Professional : For General use (Including PC) P : Playback R : Recording

1.2 OPENING THE PRODUCT:

The product can be opened by removing the top cover (6 screws). Once the product is opened one can have access to the several PCB's and the main module.

Power Supply

PCB

CDR Module

MAR775

DISPLAY

PCB

PHONE BOARD

Below the several PCB's and it function and service policy will be discussed:

Terminal

PCB

Loder

VAL1250

1.2.1 CDR loader (CDR main module CDL4009 or MAR770):

This complete CDR loader is considered as not repairable in the field. therefore this module will be repaired centrally. A

module exchange procedure will be set up for this purpose. The module can be removed from the product by removing 4 screws and the transformer (see demounting the CDR module on page 1-7), and loosing the connectors.

This module is the complete CD recorder, it contains the following parts:

CD Mechanism (CDM4009'). Underneath this mechanism a PCB is mounted which is adjusted to the mechanism (laser current settings are stored in EEPROM). Loader Assy. This mechanical assy takes care for the tray control. Main PCB. This PCB takes care that the (analog or digital) signal to be recorded is converted into a suitable signal which can be recorded on the disc. Digital signals with an other sampling frequency then 44.1kHz will be converted in the sample rate converter (DASP) to

44.1kHz. Analog signals will be first converted into a digital converter by the AD converter. This PCB also takes care that the signal from the CD (playback) is converted into a suitable digital signal (or analog via the DA converter). The main microprocessor controls the several functions of this PCB.

1.2.2 Power Supply PCB.

This PCB contains the Power SW, which is jointed the Power bottom on the front panel. This PCB consists of power supply part. The power suppluy part delivers the several voltages for the diffrent PCB in the DR6050. On this power supply one fuse (primary side) is mounted on this PCB. All parts are available as spare parts.

1.2.3 Terminal PCB.

This PCB coutaius input and output terminals. All parts are available as spare parts.

1.2.4 Display Board.

This PCB contains the Display, which informs the user about the status of the recording/playback process and it also takes care for scanning the keys on the front panel. The information from the keys is fed via a I C connection to the main microprocessor on the CDR loader module. Information which needs to be displayed is also fed via this I C line from the main microprocessor on the CDR loader module to the display controller. The parts for this PCB are available as service parts so this PCB can be repairable up to component level.

1.2.5 Headphone PCB.

This PCB contains the headphone socket.

IMPORTANT

In case of replace the CD-R module "MAR775", the initialization is necessary. Please initialize the CD-R module with following orders.

1. Press the POWER button (POWER ON) while depressing FINALIZE button and REC TYPE button together.

2. FL Display shows; WAIT

PGM PROTOCOL

PGM PORT END

3. Press the POWER button (POWER OFF).

Then the CD-R module set up to DR6050 own status.

2 TECHNICAL SPECIFICA TIONS

GENERAL

System .................................................................................................... Compact disc digital audio

Number of channels ................................................................................ 2 (stereo)

Applicable discs ...................................................................................... CD, CD-R (digital audio), CD-RW (digital audio)

Power Requirement

F version ........................................................................................... AC 100 V 50 / 60 Hz

K version ........................................................................................... AC 110 V / 220 V 50 /60 Hz

N version ........................................................................................... AC 230 V 50 Hz

U version. .......................................................................................... AC 120 V 60 Hz

Power Consumption ................................................................................ 20 W

Operating Temperature . ......................................................................... 5 °C - 35 ° C

Dimension (MAX)

Width ................................................................................................. 440 mm

Height ................................................................................................ 87 mm

Depth ................................................................................................ 317 mm

Weight ................................................................................................ 4.4 kg

AUDIO

Frequency Response .............................................................................. 20 Hz - 20 kHz

Playback S/N .......................................................................................... 100 dB

Playback Dynamic Range ....................................................................... 96 dB

Playback Total Harmonic Distortion ........................................................ 0.003 %

Recording S/N ......................................................................................... 90 dB

Recording Dynamic Range ..................................................................... 92 dB

Recording Total Harmonic Distortion ...................................................... 0.006 %

Analog Output Voltage ............................................................................ 2 V RMS

Digital Coaxial Output ............................................................................. 0.5 V (p-p) / 75 ohms

Digital Optical Output .............................................................................. - 20 dB

Headphones ............................................................................................ 0 - 5 Vrms / 8 - 2000 ohms

Recording values for line input

Digital Coaxial Input (automatic sample rate conversion) ....................... 32 - 48 kHz

Digital Optical Input (automatic sample rate conversion) ........................ 32 - 48 kHz

Analog Input ............................................................................................ 600 mVrms / 50 kohms

Specifications subject to change without prior notice.

3. WARNINGS

WARNING

All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD). Careless handling during repair can reduce life drastically. When repairing, make sure that you are connected with the same potential as the mass of the set via a wristband with resistance. Keep components and tools at this potential.

ATTENTION

Tous les IC et beaucoup d´autres semi-conducteurs sont sensibles aux décharges statiques (ESD). Leur longévite pourrait être considérablement écourtée par le fait qu´aucune précaution nést prise à leur manipulation. Lors de réparations, s´assurer de bien être relié au même potentiel que la masse de l´appareil et enfileer le bracelet serti d´une résistance de sécurité. Veiller à ce que les composants ainsi que les outils que l´on utilise soient également à ce potentiel.

WARNUNG

Alle ICs und viele andere Halbleiter sind empfindlich gegenüber elektrostatischen Entladungen (ESD). Unsorgfältige Behandlung im Reparaturfall kann die Lebensdauer drastisch reduzieren. Sorgen Sie dafür, daß sie im Reparaturfall über ein Pulsarmband mit Widerstand mit dem Massepotential des Gerätes verbunden sind. Halten Sie Bauteile und Hilfsmittel ebenfalls auf diesem Potential.

AVAILABLE ESD PROTECTION EQUIPMENT :

anti-static table mat large 1200x650x1.25mm 4822 466 10953

anti-static wristband 4822 395 10223 connection box (3 press stud connections, 1M ) 4822 320 11307 extendible cable (2m, 2M , to connect wristband to connection box) 4822 320 11305 connecting cable (3m, 2M , to connect table mat to connection box) 4822 320 11306 earth cable (1M , to connect any product to mat or to connection box) 4822 320 11308 KIT ESD3 (combining all 6 prior products - small table mat) 4822 310 10671 wristband tester 4822 344 13999

ESD

WAARSCHUWING

Alle IC´s en vele andere halfgeleiders zijn gevoelig voor electrostatische ontladingen (ESD). Onzorgvuldig behandelen tijdens reparatie kan de levensduur drastisch doen vermindern. Zorg ervoor dat u tijdens reparatie via een polsband met weerstand verbonden bent met hetzelfde potentiaal als de massa van het apparaat. Houd componenten en hulpmiddelen ook op ditzelfde potentiaal.

AVVERTIMENTO

Tutti IC e parecchi semi-conduttori sono sensibili alle scariche statiche (ESD). La loro longevità potrebbe essere fortemente ridatta in caso di non osservazione della più grande cauzione alla loro manipolazione. Durante le riparationi occorre quindi essere collegato allo stesso potenziale che quello della massa delápparecchio tramite un braccialetto a resistenza. Assicurarsi che i componenti e anche gli utensili con quali si lavora siano anche a questo potenziale.

small 600x650x1.25mm 4822 466 10958

Safety regulations require that the set be restored to its original condition and that parts which are identical with those specified be used. Safety components are marked by the symbol

Les normes de sécurité exigent que l`appareil soit remis à l`état d`origine et que soient utilisées les pièces de rechange identiques à celles spécifiées. Les composants de sécurité sont marqués

Bei jeder Reparatur sind die geltenden Sicherheitsvorschriften zu beachten. Der Originalzustand des Gerätes darf nicht verändert werden. Für Reparaturen sind Originalersatzteile zu verwenden. Sicherheitsbauteile sind durch das Symbol markiert.

U : VERSION N : VERSION

DANGER: Invisible laser radiation when open.

AVOID DIRECT EXPOSURE TO BEAM.

Varning !

Advarsel !

Osynlig laserstrålning när apparaten är öppnad och spärren är urkopplad. Betrakta ej strålen.

Usynlig laserstråling ved åbning når sikkerhedsafbrydere er ude af funktion. Undgå udsaettelse for stråling.

CLASS III b

LASER PRODUCT

SAFETY

Veiligheidsbepalingen vereisen, dat het apparaat in zijn oorspronkeliijke toestand wordt teruggebracht en dat onderdelen, identiek aan de gespecificeerde, worden toegepast. De Veiligheidsonderdelen zijn aangeduid met het symbool

Le norme di sicurezza estigono che l´apparecchio venga rimesso nelle condizioni originali e che siano utilizzati i pezzi di ricambiago identici a quelli specificati. Componenty di sicurezza sono marcati con

CLASS 3B

LASER PRODUCT

Varoitus !

Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina näkymättömälle laserisäteilylle. Älä katso säteeseen !

After servicing and before returning the set to customer perform a leakage current measurement test from all exposed metal parts to earth ground, to assure no shock hazard exists. The leakage current must not exceed 0.5mA.

"Pour votre sécurite, ces documents doivent être utilisés par des spécialistes agréés, seuls habilités à réparer votre appareil en panne".

4. SERVICE HINTS

5. SERVICE TOOLS

Audio signals disc 4822 397 30184 Disc without errors (SBC444)+ Disc with DO errors, black spots and fingerprints (SBC444A) 4822 397 30245 Disc (65 min 1kHz) without no pause 4822 397 30155 Max. diameter disc (58.0 mm) 4822 397 60141 Torx screwdrivers

Set (straight) 4822 395 50145

Set (square) 4822 395 50132 13th order filter 4822 395 30204 Hexagon socket screw button (No. 1.5)

6. Diangostic Software

6.1 Dealer mode

The purpose of the dealer mode is to prevent people taking out the CD inside the player at exhibitions, showrooms etc.. This mode disables the open/close function of the player. The dealer mode can be switched on and off pressing keys [OPEN/CLOSE] and [STOP] of the CDR player simultaneously while switching on the unit. The dealer mode is stored in the flash memory and can only be changed by executing the above actions.

6.2 Dealer diagnostics

DEALER DIAGNOSTICS

(status of player)

If power ON,

switch power OFF

Press <REWIND> + <FFWD>

simultaneously and switch

ON unit

6.2.2 Requirements to perform the test

• Working keyboard to start up the test.

• Working local display to check the output messages.

Display blinks

“BUSY”

during test

Set OK?

YES

Set displays

“

PASSED

To end test, switch OFF unit

6.2.1 Description

The intention of the dealer diagnostics is to give an indication of the CDR player status. An inexperienced, even nontechnical dealer will/can perform the test. Tests are executed automatically without need for external tools or disassembly of the unit. This test checks the CDR main board using the same tests as the electrical service diagnostics program. Only the result of the test, "PASSED" or "ERROR", will be shown on the display. Pressing keys [F FWD] and [REWIND] simultaneously while switching on the unit, starts the test. Switching off the unit ends the test.

”

Figure 6-1

Set displays

“ERROR”

CL96532086-024.eps

090999

6.3 Electrical service diagnostics

Figure 6-2

CDR MAIN BOARD TEST

ELECTRICAL SERVICE DIAGNOSTICS

(software versions, test for defective components)

PLAYER INFORMATION

YES

Tests OK?

If power ON,

switch power OFF

Load CD-DA disc (SBC444A)

Press <PLAY> + <F FWD>

simultaneously and switch ON unit

Display :

"PLAYER ID" "SW VERSION BACK END" "SW VERSION CDR LOADER"

(CDR775

"SW VERSION CD LOADER"

)

Display :

"DTST1"

DRAM test (7702)

Display :

"DTST2"

FLASH CHECKSUM test (7702)

Display :

"DTST3"

FLASH ERASE test (7702)

Display :

"DTST4"

CODEC test (7702)

Display :

"DTST5"

CDR LOADER COMMUNICATION test

Display :

"DTST6"

CD LOADER COMMUNICATION test

PASS OR FAIL

Display :

"DERRn"

n = failed test

Display next failed test

ABORT TEST

Press <F FWD>

ABORT TEST

Press <F FWD>

ABORT TEST

Press <F FWD>

ABORT TEST

Press <F FWD>

ABORT TEST

Press <F FWD>

LOADER TESTS

Display shows current disc time

CDR LOADER TEST CD-DA disc must be loaded

ABORT TEST

Press <F FWD>

YES

Test OK?

Display :

"BERR1"

"NO CDDA"

"NO DISC"

Display shows current disc time

CD LOADER TEST * CD-DA disc must be loaded

YES

Test OK?

Display :

"BERR2"

"NO CDDA"

"NO DISC"

* FOR CDR775 ONLY

ABORT TEST

Press <F FWD>

Display segments blink at f=1kHz

DISPLAY TEST

Press <F FWD>

DISPLAY TEST

Press <F FWD>

Display shows name of pressed keys

KEYBOARD & RC TEST

To end test, switch OFF unit

* FOR CDR775 ONLY

CL 96532086_025.eps

080999

6.3.1 Description

The intention of the electrical service diagnostics is to show the software versions present in the player and to direct the dealer towards defective internal units. The units are : the CDR main board, the CDR loader, the CD loader in case of a DR6050 and the keyboard/display board. A sequence of tests is executed automatically. Some of the tests can be aborted or skipped without the result being taken into account. External tools or disassembly of the unit is not necessary to get the diagnostic information. Pressing keys [PLAY/PAUSE] and [F FWD] simultaneously while switching on the unit, starts the test. Switching off the unit ends the test.

6.3.2 Requirements to perform the test

Working keyboard to start up the test. Working local display to check the output messages. A CD-DA disc with a minimum of 3 tracks in all trays to

perform the disc test.

6.3.3 Description of the tests

disc test is executed to check focus control, disc motor control, radial control and jump grooves control. The disc test is performed by audio play-back of 5 seconds at the beginning, middle and end of the disc.

CDR loader test

During the test, the current disc time is shown. In case of an error the message "BERR1" will be displayed and the [F FWD] key must be pressed to continue with the following test. Pressing the [F FWD] key also aborts this test.

CD loader test

For DR6050 only. During the test, the current disc time is shown. In case of an error the message "BERR2" will be displayed and the [F FWD] key must be pressed to continue with the following test. Pressing the [F FWD] key also aborts this test.

Display test

All segments will blink at a frequency of 1 Hz. Pressing the [F FWD] key will start the next test because the user has to check for himself if all segments work properly.

Player information

In this part of the test the following important information can be checked without removing the cover : Recorder ID. SW-version back end of player. SW-version CDR loader. SW-version CD loader (only for DR6050).

CDR main board test

[F FWD] key. The message "DERRn" will be displayed with n indicating the faulty test number. If one of the tests is aborted with the [F FWD] key, no error message will be displayed for this test. The flash data erase test ("DTST3") can not be aborted ! The CDR main board test consists out of :

DRAM test

Display : "DTST1". The DRAM used for buffer management is tested by writing, reading and verifying test patterns.

Flash checksum test

Display : "DTST2". This test checks the checksum of the player's SW stored in the flash.

Flash data erase

Display : "DTST3". During this test, all temporary information (CDtxt) in the flash is erased.

CODEC (ADC/DAC) test

Display : "DTST4". This test checks the CODEC IC by writing, reading and verifying test patterns. The test is not applicable for CDR950.

Keyboard and remote control tests

The test will give the user the ability to test every key without executing the function assigned to it. Therefore, the user needs to press every key on the keyboard and the remote control. The display will show the name of the key being pressed. Pressing more than one key at once will give an unpredictable result except for the service combinations : [PLAY/PAUSE] + [STOP], [PLAY/PAUSE] + [F FWD], [F FWD] + [REWIND], [ERASE] + [RECORD], [PLAY/PAUSE] + [RECORD].

6.4 Mechanical service diagnostics

MECHANICAL SERVICE DIAGNOSTICS

(test for defective components)

If power ON,

switch power OFF

Press <PLAY/PAUSE> + <STOP>

simultaneously and switch

ON unit

OPEN

Display shows

Visual inspection

To end test, switch OFF unit

FOCUS TEST

SLEDGE TEST

Visual inspection

Display shows

“BUSY”

“BUSY”

Display shows

TRAY TEST

Visual inspection

“OPENED”

even if tray is blocked

CL96532086_026.eps

080999

CDR communication test

Display : "DTST5". The communication between the host processor (DASP) and the CDR loader via the DSA-R-bus is tested.

CD communication test

Display : "DTST6"). The communication between the host processor (DASP) and the CD loader is tested. The test is only applicable for DR6050.

Loader tests

These tests determine if the CDR loader and the CD loader in case of a DR6050 w ork correctly. A CD-DA disc with a minimum of 3 tracks needs to be inserted in both loaders. A

Figure 6-3

6.4.1 Description

No external tools are required to perform this test. The cover needs to be removed because the user has to check the movements of the tray, focus and sledge visually. Pressing keys [PLAY/PAUSE] and [STOP] simultaneously while switching on the unit, starts the test. Switching off the unit ends the test. In case of a DR6050, one can check the CD loader mechanics in the same way by pressing the above key combination on the CD player keys.

6.4.2 Requirements to perform the test

6.5.1 Description

Working keyboard to cycle through the tests and to start up

the test.

Working local display to check the output messages.

6.4.3 Description of the tests

Focus control test

The focussing lens is continuously moving up and down. The display reads "BUSY".

Sledge control test

After pressing [F FWD] the sledge continuously moves up and down. Pressing [REWIND] stops the sledge at the position it is in and the focus control test resumes. The display reads "BUSY".

Tray control test

This test starts from within the focus control test routine. Pressing [OPEN/CLOSE] moves the tray in or out. In the tray open position one can initiate focus and sledge tests by pressing [F FWD]. One has to stop these tests pressing [REWIND] before it is possible to close the tray again. Depending on the action the display reads "OPEN", "OPENED", "CLOSE" or "BUSY".

6.5 DC-erase service mode

This test is initiated by pressing [ERASE] and [RECORD] simultaneously while switching on the unit. The player will erase a complete CD-RW disc (including PMA and ATIP lead out area) at speed N=2. The display shows the countdown of the remaining time required for the operation to complete. The format is "ER mm:ss", where "mm" are the remaining minutes and "ss" the remaining seconds. After completion the message "PASSED" is shown, and the player has to be switched off and on again to start up in normal operating mode. Switching off the unit before completion of the test, leaves the disc in an unpredictable state. In such case only a complete DC-erase procedure can recover the CD-RW disc.

6.5.2 Requirements to perform the test

Functional CDR player. A CD-RW audio disc must be present in the tray.

DC ERASE SERVICE MODE

(erasement of complete CD-RW)

Load CD-RW disc

simultaneously and switch

ss :remaining seconds

TOTAL

illuminated

when the erase function is

Press

ON unit

Display shows:

ER mm:ss

“

”

:remaining minutes

and

REM

are also

Display shows:

“

PASSED

”

completed

“

ERROR

”

if DC ERASE fails

To end test, switch OFF unit

CL96532086_027.eps

Figure 6-4

080999

7. Faultfinding trees

7.1 CDR-Module

SWITCH ON POWER

NO DISC LOADED

DISPLAY?

YES

CHECK:

MAINS, MAINS CABLE POWER SUPPLY (SEE FAULT FINDING GUIDE PSU)

DISPLAY (SEE FAULT FINDING GUIDE DISPLAY BOARD)

WIRING ON/OFF SWITCH FUSES VOLTAGES

WIRING SUPPLY VOLTAGES CLOCK SIGNAL 8MHz CONTROL SIGNALS KEYBOARD STANDBY LED

ELECTRICAL SERVICE DIAGNOSTICS: DISPLAY TEST, KEYBOARD TEST

DISPLAY:

"INSERT DISC"

YES

PRESS

TRAY?

YES

INSERT DISC

PRESS <OPEN/CLOSE>

CD-DA DISC

LOADED?

CHECK:

WIRING POWER SUPPLY VOLTAGES ELECTRICAL SERVICE DIAGNOSTICS:

REPLACE CDR MODULE IF OR

"BERRn"

CHECK:

DISPLAY BOARD (SEE FAULT FINDING GUIDE DISPLAY BOARD)

MECHANICAL SERVICE DIAGNOSTICS:

REPLACE CDR MODULE IF ERROR OCCURS

CD-R DISC

LOADED?

YESYES

ERROR OCCURS

WIRING SUPPLY VOLTAGES CLOCK SIGNAL 8MHz CONTROL SIGNALS KEYBOARD ELECTRICAL SERVICE DIAGNOSTICS: DISPLAY TEST, KEYBOARD TEST

NONO

"DERRn"

CD-RW DISC

LOADED?

YES

SEE CD-DA DISC

FAULT FINDING

SEE CD-R DISC FAULT FINDING

Figure 7-1

SEE CD-RW DISC

FAULT FINDING

CL 96532076_016.eps

290799

CD-DA DISC LOADED

DISC

DETECTION &

READING?

YES

DISPLAY:

“CD”

T.O.C. INFO?

CHECK:

WIRING POWER SUPPLY VOLTAGES ELECTRICAL SERVICE DIAGNOSTICS:

REPLACE CDR MODULE IF OR

"BERRn"

CHECK:

DISC: DIRT, SCRATCHES, DAMAGED... ELECTRICAL SERVICE DIAGNOSTICS:

REPLACE CDR MODULE IF OR

"BERRn"

ERROR OCCURS

"DERRn"

YES

PRESS <PLAY>

ANALOG

AUDIO

OUT?

YES

DISTORTION?

HEADPHONE?

YES

DIGITAL

AUDIO

OUT?

YES

CHECK:

AUDIO CONNECTIONS & CABLES I/O BOARD

W651 CONNECTION FLEX CONNECTION +5V (pin 8 conn. JJ01) KILL VOLTAGE (pin 7 conn. JJ01):

-8V DURING PLAY

KILL TRANSISTORS QN51 - QN54

PLAY AUDIO SIGNALS DISC TRACK 15: SIGNAL OF 5.4 VPP ON PINS 1 AND 3 OF CONN. J652

ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF OR

"BERRn"

CHECK:

AUDIO CONNECTIONS & CABLES I/O BOARD

ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF OR

"BERRn"

CHECK:

WIRING OF HEADPHONE/IR BOARD

ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF OR

"BERRn"

CHECK:

AUDIO CONNECTIONS & CABLES I/O BOARD

ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF OR

"BERRn"

ERROR OCCURS

FLEX CONNECTION +5V (pin 8 conn. JJ01)

ERROR OCCURS

FLEX CONNECTION +5V (pin 8 conn. JJ01) DIGITAL OUT TRANSFORMER LT02, Q311

ERROR OCCURS

"DERRn"

PLAY BACK OF CD-DA

DISCS OK

Figure 7-2

CL 96532076_017.eps

290799

CD-R DISC LOADED

DISC

DETECTION &

READING?

YES

DISPLAY:

“CD R”

OPC INFO?

YES

CHECK:

WIRING POWER SUPPLY VOLTAGES ELECTRICAL SERVICE DIAGNOSTICS:

REPLACE CDR MODULE IF OR

"BERRn"

ERROR OCCURS

"DERRn"

CHECK:

DISPLAY:

“CD”

T.O.C. INFO?

YES

DISC: DIRT, SCRATCHES, DAMAGED... ELECTRICAL SERVICE DIAGNOSTICS:

REPLACE CDR MODULE IF OR

"BERRn"

ERROR OCCURS

"DERRn"

CD-R DISC PARTIALLY

RECORDED OR EMPTY

START MANUAL

RECORDING FROM

ANALOG SOURCE

LEVEL

ADJUSTABLE?

YES

START RECORDING

FROM DIGITAL

SOURCE

DIGITAL IN?

OPTICAL IN?

YES

FINALISED CD-R DISC

LOADED

SEE CD-DA DISC

FAULT FINDING

CHECK:

AUDIO CONNECTIONS & CABLES

DISPLAY BOARD (SEE FAULT FINDING GUIDE DISPLAY BOARD)

EASY JOG KNOB I2C COMMUNICATION ELECTRICAL SERVICE DIAGNOSTICS: KEYBOARD TEST

ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF OR

"BERRn"

ERROR OCCURS

"DERRn"

CHECK:

AUDIO CONNECTIONS & CABLES I/O BOARD

FLEX CONNECTION +5V (pin 8 conn. JJ01) Q311, OPTICAL RECEIVER J301

ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF OR

"BERRn"

ERROR OCCURS

"DERRn"

RECORDING

SUCCESSFUL?

YES

SET OK

CHECK:

ELECTRICAL SERVICE DIAGNOSTICS: REPLACE CDR MODULE IF OR

"BERRn"

ERROR OCCURS

"DERRn"

Figure 7-3

CL 96532076_018.eps

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