Pioneer DEH-P2550XM/ES Service Manual
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Pioneer DEH-P2550XM/ES Service Manual

Pioneer DEH-P2550XM/ES Service Manual

Multi-cd control high power cd player with fm/am tuner
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Service
Manual
MULTI-CD CONTROL HIGH POWER CD PLAYER WITH FM/AM TUNER
DEH-P2550
- This service manual should be used together with the following manual(s):
Model No.
Order No.
CX-3026
CRT2944
For details, refer to "Important symbols for good services".
PIONEER CORPORATION
PIONEER ELECTRONICS (USA) INC.
PIONEER EUROPE NV
Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER CORPORATION 2002
Mech. Module Remarks
S10
CD Mech. Module:Circuit Description, Mech.Description, Disassembly
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
DEH-P2550/XM/ES
ORDER NO.
CRT2983
XM/ES, XN/ES
K-ZZA. OCT. 2002 Printed in Japan

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Summary of Contents for Pioneer DEH-P2550XM/ES

  • Page 1 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 C PIONEER CORPORATION 2002 K-ZZA. OCT. 2002 Printed in Japan...

  • Page 2: Safety Information

    SAFETY INFORMATION This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty.

  • Page 3: Table Of Contents

    CONTENTS SAFETY INFORMATION ............................2 1. SPECIFICATIONS ...............................4 2. EXPLODED VIEWS AND PARTS LIST........................5 2.1 PACKING................................5 2.2 EXTERIOR................................6 2.3 CD MECHANISM MODULE ..........................8 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ....................10 3.1 BLOCK DIAGRAM ..............................10 3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE) ..................12 3.3 KEYBOARD UNIT ...............................18 3.4 CD MECHANISM MODULE ..........................20 4.

  • Page 4: Specifications

    1. SPECIFICATIONS Backup current 5 mA or less DEH-P2550/XM/ES...

  • Page 5: Exploded Views And Parts List

    2. EXPLODED VIEWS AND PARTS LIST 2.1 PACKING NOTE: - Parts marked by “*” are generally unavailable because they are not in our Master Spare Parts List. - Screws adjacent to ∇ mark on the product are used for disassembly. - For the applying amount of lubricants or glue, follow the instructions in this manual.

  • Page 6: Exterior

    2.2 EXTERIOR DEH-P2550/XM/ES...
  • Page 7 EXTERIOR SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Remote Control Unit CXC1265 46 Cover CNM6854 2 Cover CNS7068 47 Panel CNS7245 3 Screw ISS26P055FTC 48 Gear CNV5997 4 Screw BMZ30P040FZK 49 Pin CNV6486 5 Screw BSZ26P060FTC 50 Lighting Conductor...

  • Page 8: Cd Mechanism Module

    2.3 CD MECHANISM MODULE 1GEM1024 2GEM1045 3GEM1035 DEH-P2550/XM/ES...
  • Page 9 - CD MECHANISM MODULE SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 CD Core Unit(S10) CWX2708 46 Rack CNV7199 2 Connector(CN101) CKS4182 47 Holder CNV7201 3 Connector(CN701) CKS4188 48 Holder CNV7202 4 Screw BMZ20P035FTC 49 Arm CNV7203 5 Screw...

  • Page 10: Block Diagram And Schematic Diagram

    3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM TUNER AMP UNIT 10 9 8 18 19 20 21 FM/AM TUNER UNIT IC 5 IC 3 EEPROM 3.3V 5.0V ANTENNA CN401 AM ANT FMRF IC 2 2.5V IC 1 FM ANT 3.3V FMRF MIXER, IF AMP...
  • Page 11 RESET IC 651 BD4834G PRE OUT CN351 Q351 TUNPCE2 TUNPCE1 TUNPDI TUNPDO TUNPCK VDD REGULATOR Q901 Q902 SYSTEM CONTROLLER IC 601(1/2) PE5341C DALMON CN981 BACKUP SENSE FUSE bsens BACK UP Q931 asens ACC SENSE ELECTRONIC VOLUME/ SOURCE SELECTOR POWER AMP TUN L IN2-L IN4+L...

  • Page 12: Overall Connection Diagram(Guide Page)

    OVERALL CONNECTION DIAGRAM(GUIDE PAGE) Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS LIST”. Large size SCH diagram Guide page Detailed page FM:-31.0dBs AM:-31.0dBs R4721 IP-BUS:+2.2dBs CD:0dBs CD:0dBs CN701 IP-BUS:+2.2dBs IP-BUS R9101 FM(30%):-30.0dBs AM(30%):-30.0dBs...
  • Page 13 TUNER AMP UNIT FM:-6.66dBs AM:-6.66dBs IP-BUS:+9.54dBs CD:+9.34dBs FM:-5.9dBs REAR AM:-5.9dBs R CH IP-BUS:+10.3dBs REAR CD:+10.1dBs L CH 5341C > FUSE 600µH CEK1208 BACKUP B.REM RL— FL— RR— FR— FM:+30dBs AM:+20dBs IP-BUS:+36dBs CD:+36dBs NOTE : Symbol indicates a resistor. Decimal points for resistor No differentiation is made between chip resistors and and capacitor fixed values discrete resistors.
  • Page 14 DEH-P2550/XM/ES...
  • Page 15 DETACH SENSE SW FM/AM TUNER UNIT A-a B DEH-P2550/XM/ES...
  • Page 16 DEH-P2550/XM/ES...
  • Page 17 DEH-P2550/XM/ES...

  • Page 18: Keyboard Unit

    3.3 KEYBOARD UNIT KEYBOARD UNIT DEH-P2550/XM/ES...
  • Page 19 DEH-P2550/XM/ES...

  • Page 20: Cd Mechanism Module

    3.4 CD MECHANISM MODULE Pickup Unit(Service)(P10) MOTOR DRIVER SPINDLE MOTOR M1 CXB6007 LOADING/CARRIAGE MOTOR M2 CXB8933 3.3V REGULATOR DEH-P2550/XM/ES...
  • Page 21 SIGNAL LINE FOCUS SERVO LINE TRACKING SERVO LINE CARRIAGE SERVO LINE SPINDLE SERVO LINE SWITCHES: CD CORE UNIT S901 : HOME SWITCH..ON-OFF S902 : CLAMP SWITCH..ON-OFF S903 : DSCSNS SWITCH..ON-OFF RF AMP / SERVO / DSP S904 : 12EJ SWITCH..ON-OFF S905 : 8EJ SWITCH..ON-OFF DAC / LPF The underlined indicates the switch position.
  • Page 22 - Waveforms Note : 1. The encircled numbers denote measuring points in the circuit diagram. 2. Reference voltage REFO1(1.65V) 1 DSCSNS 1 DSCSNS 5 SIN 5V/div 500ms/div 5V/div 500ms/div 1V/div 2s/div 2 CLCONT 2 CLCONT 6 CIN 5V/div 5V/div 500mV/div 3 LOEJ 3 LOEJ 7 TIN...
  • Page 23 # RFAGC # RFAGC # RFAGC 1V/div 500ms/div 1V/div 5ms/div 1V/div 500µs/div 0 TE 0 TE 7 TIN 500mV/div 500mV/div 1V/div 7 TIN 7 TIN 0 TE 500mV/div 500mV/div 1V/div 8 FIN 1V/div 32 Track Jump 100(32x3) Track Jump When reproducing black dots(1mm) Ref.: Ref.: Ref.:...

  • Page 24: Pcb Connection Diagram

    4. PCB CONNECTION DIAGRAM 4.1 TUNER AMP UNIT NOTE FOR PCB DIAGRAMS TUNER AMP UNIT 1.The parts mounted on this PCB include all necessary parts for several destination. CORD ASSY For further information for respective destinations, be sure to check with the schematic dia- gram.
  • Page 25 SIDE A IC,Q PRE OUT ANTENNA CN1950 FRONT DEH-P2550/XM/ES...
  • Page 26 TUNER AMP UNIT IC,Q DEH-P2550/XM/ES...
  • Page 27 SIDE B DEH-P2550/XM/ES...

  • Page 28: Panel Unit

    4.2 PANEL UNIT SIDE A PANEL UNIT CN1901 EJECT SIDE B PANEL UNIT CN831 DEH-P2550/XM/ES...

  • Page 29: Keyboard Unit

    4.3 KEYBOARD UNIT SIDE A KEYBOARD UNIT SIDE B KEYBOARD UNIT IC,Q IC,Q CN1951 ↓ DEH-P2550/XM/ES...

  • Page 30: Cd Mechanism Module

    4.4 CD MECHANISM MODULE SIDE A CD CORE UNIT(S10) LOADING /CARRIAGE MOTOR SPINDLE MOTOR CN721 CN??? HOME PICKUP UNIT (SERVICE)(P10) DEH-P2550/XM/ES...
  • Page 31 SIDE B CD CORE UNIT(S10) 12EJ DSCSNS CLAMP DEH-P2550/XM/ES...

  • Page 32: Electrical Parts List

    5. ELECTRICAL PARTS LIST NOTES: - Parts whose parts numbers are omitted are subject to being not supplied. - The part numbers shown below indicate chip components. Chip Resistor RS1/_S___J,RS1/__S___J Chip Capacitor (except for CQS..) CKS.., CCS.., CSZS..=====Circuit Symbol and No.===Part Name Part No.
  • Page 33 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S1602D RS1/16S182J RS1/16S473J RS1/16S153J RS1/16S473J RS1/16S153J RS1/16S473J RS1/16S222J RS1/16S473J RD1/4PU102J RS1/16S473J 4721 RD1/4PU0R0J RS1/16S473J 9101 RD1/4PU0R0J RS1/16S681J 9403 RD1/4PU0R0J RS1/16S681J CAPACITORS RS1/16S681J RS1/16S0R0J...
  • Page 34 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CEJQ221M10 Unit Number : CWM8758 CKSRYB103K50 Unit Name : Panel Unit CEJQ101M16 CEJQ220M10 MISCELLANEOUS CKSRYB103K50 1970 CL220PGC CKSYB475K10 1970 Push Switch(EJECT) CSG1112 CKSRYB104K25 CKSRYB473K50...
  • Page 35 =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- RS1/16S102J RS1/16S102J RS1/16S102J RS1/16S221J RS1/16S221J RS1/16S221J RS1/16S221J RS1/16S101J RS1/16S101J RS1/16S0R0J RS1/16S104J RS1/16S473J RS1/16S273J CAPACITORS CKSRYB104K16 CKSRYB104K16 100µF/16V CCH1504 47µF/6.3V CCH1506 CCSRCH101J50 CKSRYB224K16 CKSRYB224K16 CKSRYB104K16 CKSRYB471K50 CKSRYB104K16 22µF/6.3V CCH1507 CKSRYB103K25 CKSRYB104K16 100µF/6.3V CCH1505 CKSRYB104K16...

  • Page 36: Adjustment

    6. ADJUSTMENT 6.1 CD ADJUSTMENT 1) Cautions on adjustments 2) Test mode • In this product the single voltage (3.3V) is used for the This mode is used to adjust the CD mechanism module. regulator. The reference voltage is the REFO1 (1.65V) •...
  • Page 37 - Flow Chart [4]+[6]+Reset [KEY] Test Mode In Contents Display [CD]or[SOURCE] Source On [BAND] Power On Power On (T.Offset is adjusted) (T.Offset is not adjusted) [→] [←] [BAND] Tracking Servo Focus Close / Focus Mode Automatic adjustment CRG+ CRG- Power Off Close S curve check display switching...

  • Page 38: Checking The Grating After Changing The Pickup Unit

    6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT • Note : The grating angle of the PU unit cannot be adjusted after the PU unit is changed. The PU unit in the CD mechanism module is adjusted on the production line to match the CD mechanism module and is thus the best adjusted PU unit for the CD mechanism module.
  • Page 39 Ech → Xch 20mV/div, AC Grating waveform Fch → Ych 20mV/div, AC 0° 30° 45° 60° 75° 90° DEH-P2550/XM/ES...

  • Page 40: Error Mode

    6.3 ERROR MODE - Error Messages If a CD is not operative or stopped during operation due to an error, the error mode is turned on and cause(s) of the error is indicated with a corresponding number. This arrangement is intended at reducing nonsense calls from the users and also for facilitating trouble analysis and repair work in servicing.

  • Page 41: General Information

    7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 DISASSEMBLY Removing the Case (not shown) 1. Remove the Case. Removing the CD Mechanism Module (Fig.1) CD Mechanism Module Remove the four screws. Disconnect the connector and then remove the CD Mechanism Module. Removing the Grille Assy (Fig.1) Remove the two screws and then remove the Grille Assy.
  • Page 42 - How to hold the Mechanical Unit 1. Hold the top and bottom frame. 2. Do not squeeze top frame's front portion too tight, because it is fragile. Do not squeeze. - Removing the Upper and Lower Frames 1. With a disc clamped, remove the four springs (A), Upper Frame the two springs (B), the two springs (C), and the four screws.

  • Page 43: Connector Function Description

    7.1.2 CONNECTOR FUNCTION DESCRIPTION DEH-P2550/XM/ES...

  • Page 44: Parts

    7.2 PARTS 7.2.1 IC - Pin Functions(PE5341C) Pin No. Pin Name Format Function and Operation swvdd Grille : Chip enable output Not used TESTIN Test program mode input LCDPW LCD back light power supply control output TELIN Telephone mute input ejectin Eject sense input FLPILM...
  • Page 45 Pin No. Pin Name Format Function and Operation MODELIN Model select input CSENS Flap close sense input Not used DSCSNS CD : Disc insert sense input VDSENS CD : VD voltage sense input TEMP CD : Temperature sense input AVDD A/D converter power supply terminal AVREF A/D converter reference voltage terminal...
  • Page 46 PAL007A Protector; Over voltage Reference amp_vcc Stand-by P-GND2 Circuit OUT2- Offset Protector; STBY Detection Thermal OUT2+ OUT1- Offset P-GND1 Detection OUT1+ Protector; S-GND Short circuit AC-GND OUT3+ Offset P-GND3 Detection OUT3- OUT4+ Offset MUTE Detection OUT4- P-GND4 SWITCH Protector; Over current limit Mute circuit DEH-P2550/XM/ES...
  • Page 47 - Pin Functions (PD6340A) Pin No. Pin Name Function and Operation SEG4-0 LCD segment output COM3-0 LCD common output VLCD LCD drive power supply 11-14 KST3-0 Key strobe output 15,16 KDT0,1 Key data input (analogue input) Remote control reception input DPDT Display data input Not used...
  • Page 48 - Pin Functions(UPD63712GC) Pin No. Pin Name Function and Operation Output of LD Input of PD Assignment of pickup polarity AVDD Power supply for the analog system DGND Ground for digital circuits RFOK Output of RFOK INTQ Interruption signals to the external microcomputer Input of reset Command/Parameter discrimination signal input Data strobe signal input...
  • Page 49 Pin No. Pin Name Function and Operation TESTEN Connected to GND 62-66 TEST4-0 Connected to GND ADGND GND for DAC Output of EFM signals Input of asymmetry ADVDD Power supply for DAC Input of RF 72, 73 EQ2, 1 Equalizer 2, 1 Reversal input of RF RF2- Reversal input of RF2...
  • Page 50 - Pin Functions(BA5996FP) Pin No. Pin Name Function and Operation Input pin for reference voltage OPIN2(+) Input pin for non-inverting input for CH2 preamplifier OPIN2(-) Input pin for inverting input for CH2 preamplifier OPOUT2 Output pin for CH2 preamplifier OPIN1(+) Input pin for non-inverting input for CH1 preamplifier OPIN1(-) Input pin for inverting input from CH1 preamplifier...
  • Page 51 - FM/AM Tuner Unit 10 9 8 18 19 20 21 IC 5 IC 3 EEPROM 3.3V 5.0V AM ANT FMRF IC 2 2.5V IC 1 FM ANT 3.3V FMRF MIXER, IF AMP DET, FM MPX RF adj ANT adj CF52 CF51 IC 4...

  • Page 52: Display

    7.2.2 DISPLAY - LCD(CAW1759) DEH-P2550/XM/ES...

  • Page 53: Operational Flow Chart

    7.3 OPERATIONAL FLOW CHART Power ON VDD=5V Pin 41 bsens Pin 93 bsens=L asens Pin 92 asens=L dsens Pin 90 dsens=L ASENBO←H Pin 71 CSENS < < - CSENS 2V, 3V CSENS Pin 77 Last source returns. 2V < CSENS < 3V CD loading functions are available.

  • Page 54: Cleaning

    7.4 CLEANING Before shipping out the product, be sure to clean the following portions by using the prescribed cleaning tools: Portions to be cleaned Cleaning tools CD pickup lenses Cleaning liquid : GEM1004 Cleaning paper : GED-008 DEH-P2550/XM/ES...

  • Page 55: Operations

    8. OPERATIONS DEH-P2550/XM/ES...
  • Page 56 DEH-P2550/XM/ES...
  • Page 57 DEH-P2550/XM/ES...
  • Page 58 DEH-P2550/XM/ES...
  • Page 59 DEH-P2550/XM/ES...

This manual is also suitable for:

Deh-p2550Deh-p2550 xn/esDeh-p2580

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