Philips CDR775 Service Manual

Compact disc recorder CDR775

/00

OPEN / CLOSE

OPEN / CLOSE

OPEN / CLOSE

PLAY / PAUSE

PLAY / PAUSE

PLAY / PAUSE

STOP

STOP

STOP

AUDIO CD RECORDABLE/REWRITABLE

AUDIO CD RECORDABLE/REWRITABLE

AUDIO CD RECORDABLE/REWRITABLE

ON / OFF

REC

RECORD

TYPE

EXT

EXT

FINALIZE

ERASEFINALIZE

ERASE

SOURCE

SOURCE

R

e
c

o
r

d
a

b
l

e

DOUBLE SPEED

EASY JOG

EASY JOG

STORE/

STORE/

5

CDR

REM

REC

TIME

TRACK

TOTAL

REM

T

RACK

2

3

MANUAL

I
I

SHUFFLE

4

567

CD

R

W

8

9

1011

12

13

RECORD

CHANGER

CDR775 AUDIO CD RECORDER

DISPLAY

SCROLL

TIME

14

15

16

17

CD

RW

DJ MODE

REPEAT

1

SYNC

DIGITAL
OPTICAL

ANALOG

PROG

5

CD

STEP

18

19

20

+

PROG

A-B

SHUFFLE

ALL
REPEAT
S

CAN

TRACK

PHONES

CANCEL/

CANCEL/

6

J

6

J

K

K

MENU

PLAY/PAUSE

MENU

PLAY/PAUSE

DELETE

DELETE

STOP

STOP

OPEN/CLOSE

AUDIO CD PLAYBACK

AUDIO CD PLAYBACK

IR SENSOR

OPEN/CLOSE

CL 96532086_000.eps

080999

ENTER

SERVICING

For servicing CDR775, the set can divided into three parts.

1. The display board (partly) 1 002, the I/O board 1004, the
headphone board (partly) 1002, the IR board (partly) 1002, the ON/
OFF & Standby LED board (partly) 1002 and the CD-out board
(partly) 1002 have to be repaired at component level. The power
supply unit 1003 is available as spare part, but can also be repaired
at component level.

2. The CDR module (containing the CDR loader 81, CDR main board
1001 and loader bracket 82, 83) will be exchanged completely in
case of failure. This complete CDR module is available as spare
part. Defective modules have to be returned for central repair.

3. The CD module (containing the CD loader 131, CD main board
1005 and loader bracket 132) is a new module with VAL1250
loader assy but also a separate CDM and separate loader parts will
be available via service stock. The CD main board can be repaired
at component level.

Also available: Circuit Description " The Basics of Compact Disc
Recordable/Rewriteable". Service code number 4822 725 25242.

Contents Page

1. Technical Specifications 2

2. Warning and Servicing Hints 4

3. User Instructions 7

4. Mechanical Instructions 19
Wiring Diagram CDR 19
Wiring Diagram CD loader 20
Exploded View CDR 21
Exploded View CD loader 22
Dismantling Instructions 23

5. Electrical and Circuit Diagrams

Diagram PWB

Overall Blockdiagram 24
Display Board 26 26
IR / On/Off &Standby LED Board 27 27
Headphone / CD-out Board 28 28
I/O Board 29 30
Power supply unit 31 32
CD-Mainboard 1A 33 37/38
CD-Mainboard 1B 34 37/38
CD-Mainboard 1C 35 37/38
CD-Mainboard 2 36 37/38

6. Diagnostic Software 39

7. Faultfinding Trees 43

8. Faultfinding Guide 49

9. List of Abbreviations 65

10. Partslist (mechanical and electrical) 71

©

Copyright reserved 1999 Philips Consumer Electronics B.V. Eindhoven, The
Netherlands. All rights reserved. No part of this publication may be reproduced,
stored in a retrieval system or transmitted, in any form or by any means, electronic,
mechanical, photocopying, or otherwise without the prior permission of Philips.

Published by RH 9969 Service DPS Hasselt Printed in the Netherlands Subject to modification 5 3104 125 40030

GB 2 CDR7751.

Technical Specifications CDR775

1. Technical Specifications CDR775

1.1 General

Mains voltage : all range version 84-

230V (/00, /01C, /06, /
13, /14)

: USA version 117V/

60Hz (/17)
Mains frequency : 50-60 Hz
Power consumption : 12W
DC output : +5V ± 10%, 50mA

max.

1.2 Input/output

1.2.1 Line output (CDR & CD)

Output level\ : 2Vrms at 0dB
Output resistance : 200

1.2.2 Line input

Input sensitivity : 500mVrms
Input impedance : 50k
Max. input voltage : 2.5Vrms

1.2.3 Digital output (CDR & CD)

Format : AES/EBU format

according IEC958

(consumer format)
Sampling frequency : 44.1kHz
Output resistance : 75

1.2.4 Digital input

Format : AES/EBU format

according IEC958

(consumer format)
Sampling frequency : 32 to 48kHz
Input resistance : 75

1.2.5 Optical input

Format : AES/EBU format

according IEC958

(consumer format)
Sampling frequency : 32 to 48kHz

1.3 Audio performance

1.3.1 Cinch analog output (CDR play-back)

Output voltage : 2Vrms ± 2dB (0dB

signal)
Frequency range F.R. : 20Hz < F.R.< 20kHz
Amplitude linearity :± 0.3dB (typical ±

0.1dB)

Channel unbalance : < 0.3dB at 1kHz

(typical ± 0.2dB)
Output resistance : 200
Phase non-linearity : < 0.2 deg at 1kHz
Outband attenuation : 50dB above 30kHz
Channel separation : > 90dB at 1kHz

(typical 110dB),

>85dB between 20Hz

and 20kHz (typical

S/N-ratio A-weighted : > 98dB (typical

S/N-ratio unweighted : > 95dB (typical 98dB)
Dynamic range : > 92dB at 1kHz

THD+N : >85dB between 20Hz

1.3.2 Cinch analog input/output (monitor path CDR)

Measured with Audio precision system one.
Input voltage is 1Vrms.
Output voltage : 2Vrms ± 2dB (0dB

Ω

Ω

Ω

Ω

Ω

Frequency range F.R. : 20Hz < F.R.< 20kHz
Amplitude linearity :± 0.3dB (typical ±

Channel unbalance : < 0.3dB at 1kHz

Output resistance : 200
Phase non-linearity : < 0.2 deg at 1kHz
Outband attenuation : 50dB above 30kHz
Channel separation : > 90dB at 1kHz

S/N-ratio A-weighted : > 90dB (typical 88dB)
Dynamic range : > 85dB at 1kHz

THD+N : > 80dB between 20Hz

Intermodulation THD : > 80dB

1.3.3 Cinch analog output (CD play-back)

Output voltage : 2Vrms ± 2dB (0dB

Frequency range F.R. : 20Hz < F.R.< 20kHz
Amplitude linearity :± 0.3dB (typical ±

Channel unbalance : < 0.3dB at 1kHz

Output resistance : 200
Phase non-linearity : < 0.2 deg at 1kHz
Outband attenuation : 50dB above 30kHz
Channel separation : > 90dB at 1kHz

S/N-ratio A-weighted : > 98dB (typical

S/N-ratio unweighted : > 94dB (typical 98dB)
Dynamic range : > 92dB at 1kHz

THD+N : > 82dB between 20Hz

>93dB)

100dB)

(typical 96dB), > 90dB
between 20Hz and
20kHz (typical 96dB)

and 20kHz (typical
91dB)

signal)

0.1dB)

(typical ± 0.2dB)

Ω

(typical 98dB), > 85dB
between 20Hz and
20kHz (typical >92dB)

(typical 90dB)

and 20kHz (typical
82dB)

signal)

0.1dB)

(typical ± 0.2dB)

Ω

(typical 100dB),
>85dB between 20Hz
and 20kHz (typical
>93dB)

100dB)

(typical 96dB), > 90dB
between 20Hz and
20kHz (typical 96dB)

and 20kHz (typical
85dB)

Technical Specifications CDR775

1.3.4 Headphone output (all functions)

GB 3CDR775 1.

Output voltage : 3Vrms (0dB)/8-2000
S/N : > 80dB
THD+N : > 78dB
Channel separation : > 60dB between 20Hz

and 20kHz

1.4 Laser device

Material : GaAlAs
Wave length : between 780 and

800nm (at 25°C)

Laser output : 1mW max. during

reading, 20mW max.
during writing

Class : 3B

1.5 Dimensions and weight

Number and height of feet : 4x11mm foiled
Apparatus tray closed (WxDxH) : 435x305x75mm

(without feet)
Weight without packaging : 3.2kg
Weight with packaging : 4.2kg

Ω

GB 4 CDR7752.

Warnings and Servicing Hints

2. Warnings and Servicing Hints

GB

WARNING

All ICs and many other semi-conductors 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 wrist wrap with
resistance.
Keep components and tools also at this
potential.

F

ATTENTION

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

D

Alle IC und viele andere Halbleiter sind
empfindlich gegen elektrostatische
Entladungen (ESD).
Unsorgfältige Behandlung bei der Reparatur
kann die Lebensdauer drastisch vermindern.
Sorgen sie dafür, das Sie im Reparaturfall
über ein Pulsarmband mit Widerstand mit
dem Massepotential des Gerätes verbunden
sind.
Halten Sie Bauteile und Hilfsmittel ebenfalls
auf diesem Potential.

GB

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

NL

Veiligheidsbepalingen vereisen, dat het apparaat in zijn oorspronkelijke
toestand wordt terug gebracht en dat onderdelen, identiek aan de
gespecifieerde worden toegepast.

F

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

WARNUNG

NL

WAARSCHUWING

Alle IC's en vele andere halfgeleiders zijn
gevoelig voor elektrostatische ontladingen
(ESD).
Onzorgvuldig behandelen tijdens reparatie
kan de levensduur drastisch doen
verminderen.
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.

I

AVVERTIMENTO

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

D

Bei jeder Reparatur sind die geltenden Sicherheitsvorschriften zu beachten.
Der Originalzustand des Gerats darf nicht verandert werden.
Fur Reparaturen sind Original-Ersatzteile zu verwenden.

I

Le norme di sicurezza esigono che l'apparecchio venga rimesso nelle
condizioni originali e che siano utilizzati pezzi di ricambiago idetici a quelli
specificati.

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 return to user/customer.
Ref.UL Standard NO.1492.

NOTE ON SAFETY:

Symbol

: Fire or electrical shock hazard. Only original parts should be used to replace any part with symbol

Any other component substitution(other than original type), may increase risk or fire or electrical shock hazard.

“Pour votre sécurité, ces documents
doivent être utilisés par des
spécialistes agrées, seuls habilités à
réparer votre appareil en panne.”

CL 96532086_021.eps

080999

Warnings and Servicing Hints

SERVICING HINTS

In the set, chip components have been applied. For disassembly and assembly check the figure below.

GB 5CDR775 2.

CL 96532086_022.eps

080999

GB 6 CDR7752.

Warnings and Servicing Hints

CL 96532086_023.eps

080999

User instructions

3. User instructions

GB 7CDR775 3.

GB 8 CDR7753.

User instructions

User instructions

GB 9CDR775 3.

GB 10 CDR7753.

User instructions

User instructions

GB 11CDR775 3.

GB 12 CDR7753.

User instructions

User instructions

GB 13CDR775 3.

GB 14 CDR7753.

User instructions

User instructions

GB 15CDR775 3.

GB 16 CDR7753.

User instructions

User instructions

GB 17CDR775 3.

Personal notes:

GB 18 CDR7753.

Personal notes:

User instructions

Mechanical instructions

4. Mechanical instructions

Wiring diagram

WIRING DIAGRAM CDR775

8006

3104 157 1099

1000

114

8001

3104 157 1124

I/O BOARD

3104 128 0599

8002

3104 157 10962

CD OUT

3104 128 0590

17

1502

11

0205

1

GB 19CDR775 4.

Pin 1 indicated by All Wires are 1/1, except flex 8001, 8005 and 8007

2

0206

1

POWER SUPPLY UNIT

8007

3104 157 1129

0101

8001 (at conn. 1400
of CDR main board)

1 GROUND
2 DIG_OUT_C
3 GROUND
4 EXT_DIG_IN
5 EXT_OPT_IN
6 GROUND
7D5V
8KILL
9LEFT_IN
10 GROUND
11 RIGHT_IN
12 RIGHT_OUT
13 GROUND
14 LEFT_OUT

8002

1 VDC2
2VFTD
3

VDC1

4 GROUND
5+5V
6+5V
7 GROUND
8 GROUND
9 GROUND
10 +12V
11 -8V

8003 (at conn. F934
of CDR main board)

1 VDC2
2

VFTD

3 VDC1
4 SYS_RESET
5IIC_DATA
6 GROUND
7IIC_CLK
8 DISPL_INT
9 GROUND
10 D5V

8004

3104 157 11002

13

1410

Connections delivered
with CDR-loader assy

114

1400

Flex connected
to CDM

F934

1000

130

MAIN BOARD CDR

3104 128 0586

1

3

1400

1

110

1500

11

1708

Flex connected
to sledge motor

Flex connected
to turn table motor

Cable connected
to tray switch and
tray motor

10

1

11

1

4

1

1220

1330

1200

122

8005

3104 157 1123

8003

3104 157 1122

1208

1

4

1002

Cable connected
to tray switch and
tray motor

122

MAIN BOARD CD

3104 128 0598

Flex connected
to CDM panel

1000

116

Connections delivered
with CD-loader assy

111

Flex connected

1006

to turn table motor

17

1209

1001

Cable connected
to sledge motor

8004

1 LEFT_HP_OUT
2 GROUND

8006

1 ON!
2 OFF!

8009

1LED_ON
2 GROUND

3 RIGHT_HP_OUT

8008

1+5V
2

IR_IN

3 GROUND

8007 (at conn. 1209
of CD main board)

1 RIGHT_CD
2 GND
3 LEFT_CD
4 GND
5 DOBM_CD
6 GROUND

1

4

7 KILL

8005 (at conn. 1708
of CDR main board)

1 GROUND
2 DSA_DATA_CD
3 GROUND
4 DSA_STR_CD
5 DSA_ACK_CD
6 GROUND
7 D5V
8 12V_CD
9 GROUND
10 IIS_DATA_CD
11 IIS_WS_CD
12 GROUND
13 IIS_BCLK_CD
14 GROUND
15 DOBM_CD

TO FRAME

Texture indicates text on flex.

16 SYS-RESET
17 LEFT_IN_CD
18 GROUND
19 RIGHT_IN_CD
20 KILL
21 SYS_CLK_8W
22 GROUND

TO FRAME

HEADPHONE BOARD

3104 128 0590

ON/OFF & STBY LED

3104 128 0590

1302

2

1300

12

1

8009

3104 157 03881

1

1119

10

112

DISPLAY BOARD

3104 128 0590

1122

3

1121

8008

3104 157 11281

1200

1

3

IR BOARD

3104 128 0590

CL 96532086_001.eps

080999

Mechanical instructions

Wiring CD

WIRING DIAGRAM CD LOADER VAL1250

GB 20CDR775 4.

Flex from
turn table motor

Tray

switch

Turn table

motor

Tray motor

Connector from tray motor
and tray switch

Connection tray motor
and tray switch

LOADER VAL1250

CDM VAM1250

OPU

LOADER VAL1250

Sledge motor

and switch

Flex from OPU

Flex from
turn table motor

Connection sledge motor
and sledge switch

Flex from OPU

1002

11

1006

1

MAIN BOARD CD

1001

14

16

1000

1

14

CDM VAM1250

22

1208

1

16

1210

1

7

1209

1

MAIN BOARD CD

To main board CDR

To CD out board

CONNECTOR 1006

1 HALL +
2 W­3 W+
4 V+
5 HALL­6 U+
7 V­8 U­9 UCOIL
10 VCOIL
11 WCOIL

CONNECTOR 1000

1 VSUB
2 HFGND
3 VDD
4 RF
5 LDON
6 R2
7 R1
8 D4/D3
9 D2
10 D1
11 FTC
12 RW
13 FOC+
14 FOC­15 RAD+
16 RAD-

CONNECTOR 1002

1 HOMESW
2 SGND
3 TRAY+
4 TRAY-

CONNECTOR 1001

1 HOMESW
2 SGND
3 SL­4 SL+

CONNECTOR 1209

1 AUDIO R (RIGHT_CD)
2 GND
3 AUDIO L (LEFT_CD)
4 GND
5 DOBM5_CD (DOBM_CD)
6 GND
7 KILL

CONNECTOR 1208

1 GND
2 CRIN (SYS_CLK_8W)
3 KILL
4 AUDIO R (RIGHT_IN_CD)
5 GND
6 AUDIO L (LEFT_IN_CD)
7 DSA_RST (SYS_RESET)
8 DOBM (DOBM_CD)
9 GND
10 SCLK (I2S_BCLK_CD)
11 GND
12 WCLK (I2S_WS_CD)
13 DATA (I2S_DATA_CD)
14 GND
15 +12V
16 +5V
17 GND
18 DSA_ACK (DSA_ACK_CD)
19 DSA_STROBE (DSA_STR_CD)
20 GND
21 DSA_DATA (DSA_DATA_CD)
22 GND

Connector from sledge motor
and sledge switch

POSITION OF FLEX CONNECTIONS

CL 96532086_002.eps

080999

Mechanical instructions

Exploded view CDR775

EXPLODED VIEW CDR775

GB 21CDR775 4.

ON/OFF
& STBY LED

LOADER ASSY CDR

MAIN BOARD CDR

MAIN BOARD
CD

LOADER ASSY CD

CD OUT
BOARD

I/O BOARD

POWER SUPPLY UNIT

HEADPHONE
BOARD

IR
BOARD

DISPLAY
BOARD

DISPLAY ASSY

CL 96532086_003.eps

080999

Mechanical instructions

Exploded view CD

EXPLODED VIEW CD LOADER VAL1250

CLAMPER ASSY

SUSPENSION

RACK SPRING

GB 22CDR775 4.

CDM VAM1250

SCREW

SCREW

RACK

RUBBER

SWITCH

RUBBER

PLUG

TRAY GEARWHEEL

PLUG

TULE

RACK GEARWHEEL

MOTORSPRING

SUSPENSION

SUB CHASSIS

RUBBER

SUSPENSION

SUSPENSION

RUBBER

CHASSIS ASSY VAL1250

PULLEY WHEEL

TRAY HORIZONTAL

BELT

TRAY MOTOR ASSY

MOTORSPRING

CL 96532086_004.eps

080999