deh p2550 djvu

sound. vision. sou!

Service

Manuał

DEH-P2550/XM/ES

ORDER NO.

CRT2983

MULTI-CD CONTROL HIGH POWER CD PLAYER WITH FM/AM TUNER

DEH-P2550

XM/ES, XN/ES

_n COMPACT

gOdiM

DIGITAL AUDIO

# This seryice manuał should be used together with the following manual(s):

Model No.	Order No.	Mech. Module	Remarks
CX-3026	CRT2944	S10	CD Mech. Module:Circuit Description, Mech.Description, Disassembly

PIONEER CORPORATION 4-1, Meguro 1 -Chomę, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS (USA) INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.

PIONEER EUROPE NV Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936

© PIONEER CORPORATION 2002

K-ZZA. OCT. 2002 Printed in Japan

3. BŁOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BŁOCK DIAGRAM

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Decimal points for resistor and capacitor fixed values are expressed as :

2.2 ->2R2 0.022 ->R022

The /h mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be surę to use parts of identical designation.

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3.4 CD MECHANISM MODULE

SIGNAL LINĘ FOCUS SERVO LINĘ TRACKING SERVO LINĘ CARRIAGE SERVO LINĘ SPINDLE SERVO LINĘ

HOME SWITCH.....ON-OFF

CLAMP SWITCH....ON-OFF DSCSNS SWITCH....ON-OFF 12EJ SWITCH..„ON-OFF 8EJ SWITCH....ON-OFF The underlined indicates the switch position.

Waveforms

Notę : 1. The encircled numbers denote measuring points in the Circuit diagram. 2. Reference voltage REF01(1.65V)

©DSCSNS 5V/div © CLCONT 5V/div CD LOEJ 5V/div 0VD    10V/div

When loading a 12cm CD

500ms/div

©DSCSNS 5V/div © CLCONT 5V/div © LOEJ 5V/div 0VD    10V/div

When loading an 8cm CD

500ms/div

©SIN    1 V/div    2s/div

© CIN    500mV/div

©TIN    500mV/div

Ref.:

GND

Modę:

NormaL

Ref.:

GND

Modę:

NormaL

When setting up after loading a 12cm CD-DA

disc

FIN    200mV/div    500ms/div

RFOK    2V/div

SIN    2V/div

When setting up "Source On"(12cm CD-DA)

Ref.:

REFO

Modę: * Normal

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MDX    500mV/div 5ms/div

SIN    1V/div

Spindle waveform during "Play¹

FIN    500mV/div 200ms/div

FE    500mV/div

Focus Search

Ref.:

REFO

Modę:

TEST

TE    500mV/div 200ms/div

FE    500mV/div

When setting up "Source On"

Ref.:

REFO

Modę:

Normal

MDX    500mV/div 5(is/div

SIN    1V/div

Spindle waveform during "Play"(Magnified)

Ref.: . REFO

Modę: ^% Normal

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TE    500mV/div 2ms/div

RFAGC 500mV/div

When "Tracking Open"

© FE    500mV/div    20ms/div

© FIN    500mV/div

® TE    500mV/div

©TIN    500mV/div

During "Play"(CD-DA>

Ref.:    ^a

REFO

Modę:

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RFAGC 500mV/div 0.5(is/div

RF eye pattern

1V/div 500(is/div

500mV/div

500mV/div

1 Track Jump

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4. PCB CONNECTION DIAGRAM

4.1 TUNER AMP UNIT

NOTĘ FOR PCB DIAGRAMS

1. The parts mounted on this PCB include all necessary parts for several destination.

Forfurther Information for respective destinations, be surę to check with the schematic diagram.

2. Viewpoint of PCB diagrams Connector Capacitor

TUNER AMP UNIT

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4.2 PANEL UNIT

PANEL UNIT

PANEL UNIT

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4.3 KEYBOARD UNIT

H KEYBOARD UNIT

SIDEA

KEYBOARD UNIT

SIDEB

DISP    PAUSE AUDIO

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4.4 CD MECHANISM MODULE

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CD CORE UNIT(S10)

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1. FR+	9. NC	1. BUS+
2. RR-	10. NC	2. GND
3. FR-	11. B.REM	3. GND
4. RR+	12. NC	4. NC
5. FL+	13. NC	5. BUS-
6. RL+	14. ACC	6. GND
7. FL-	15. GND	7. BUS L+ INPUT
8. RL-	16. BACK UP	8. ASENB

9. BUS R+ INPUT

10.    BUS R- INPUT

11.    BUS L- INPUT

7.1.2 CONNECTOR FUNCTION DESCRIPTION

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