Pioneer DEH-P740MP Service Manual
  1. Manuals
  2. Brands
  3. Pioneer Manuals
  4. Car Receiver
  5. Premier DEH-P740MP
  6. Service manual
Pioneer DEH-P740MP Service Manual

Pioneer DEH-P740MP Service Manual

Multi-cd control high power cd/mp3 player with fm/am tuner
Hide thumbs Also See for DEH-P740MP:
Table of Contents

Advertisement

Quick Links

See also: Operating Manual , Installation Manual
Service
Manual
MULTI-CD CONTROL HIGH POWER CD/MP3 PLAYER WITH FM/AM TUNER
DEH-P740MP
DEH-P7400MP
DEH-P7450MP
- This service manual should be used together with the following manual(s):
Model No.
Order No.
CX-3007
CRT2820
CONTENTS
1. SAFETY INFORMATION ............................................3
2. EXPLODED VIEWS AND PARTS LIST .......................4
4. PCB CONNECTION DIAGRAM ................................42
5. ELECTRICAL PARTS LIST ........................................50
6. ADJUSTMENT..........................................................62
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 2001
DEH-P740MP/XN/UC
Mech. Module Remarks
S9MP3
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.
XN/UC
XN/ES
7. GENERAL INFORMATION .......................................71
7.1 DIAGNOSIS ........................................................71
7.1.1 DISASSEMBLY .........................................71
7.1.2
7.2 IC ........................................................................77
7.3 OPERATIONAL FLOW CHART ...........................89
7.4 CLEANING ..........................................................90
8. OPERATIONS AND SPECIFICATIONS.....................91
K-ZZD. DEC. 2001 Printed in Japan
ORDER NO.
CRT2783
XN/UC
.......75

Advertisement

Table of Contents
loading

Related Manuals for Pioneer DEH-P740MP

Summary of Contents for Pioneer DEH-P740MP

  • Page 1: Table Of Contents

    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 2001 K-ZZD. DEC. 2001 Printed in Japan...
  • Page 2 DEH-P740MP,P7400MP,P7450MP [ Important symbols for good services ] In this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely. When you find the procedures bearing any of the symbols, be sure to fulfill them: 1. Product safety You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and should keep the safety during servicing by following the safety instructions described in this manual.

  • Page 3: Safety Information

    DEH-P740MP,P7400MP,P7450MP 1. SAFETY INFORMATION CAUTION 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.

  • Page 4: Exploded Views And Parts List

    DEH-P740MP,P7400MP,P7450MP 2. EXPLODED VIEWS AND PARTS LIST 2.1 PACKING (DEH-P740MP/XN/UC, DEH-P7400MP/XN/UC)
  • Page 5 13 Earth Plate CNC9450 14 Bush CNV3930 15 Polyethylene Bag CEG1173 (2) CONTRAST TABLE DEH-P740MP/XN/UC and DEH-P7400MP/XN/UC are constructed the same except for the following: Part No. Mark No. Symbol and Description DEH-P740MP/XN/UC DEH-P7400MP/XN/UC 17 Carton CHG4612 CHG4611 18 Contain Box...
  • Page 6 DEH-P740MP,P7400MP,P7450MP 2.2 PACKING (DEH-P7450MP/XN/ES)
  • Page 7 DEH-P740MP,P7400MP,P7450MP - PACKING SECTION PARTS LIST (DEH-P7450MP/XN/ES) Mark No. Description Part No. Mark No. Description Part No. 1 Cord Assy CDE6438 16 Protector CHP2252 2 Spring CBH1650 17-1 Owner’s Manual CRD3511 3 Remote Control Unit CXB8743 17-2 Owner’s Manual CRD3512...
  • Page 8 DEH-P740MP,P7400MP,P7450MP 2.3 EXTERIOR (DEH-P740MP/XN/UC)
  • Page 9 DEH-P740MP,P7400MP,P7450MP - EXTERIOR SECTION PARTS LIST (DEH-P740MP/XN/UC) Mark No. Description Part No. Mark No. Description Part No. 1 Screw BMZ30P040FZK 51 Arm CNV6508 2 Screw BMZ30P100FMC 52 Panel Unit CWM7986 3 Screw BSZ26P060FMC 53 Socket(CN1850) CKS3550 4 Screw BSZ30P040FMC 54 Connector(CN1851)
  • Page 10 DEH-P740MP,P7400MP,P7450MP 2.4 EXTERIOR (DEH-P7400MP/XN/UC, DEH-P7450MP/XN/ES)
  • Page 11 DEH-P740MP,P7400MP,P7450MP (1) EXTERIOR SECTION PARTS LIST (DEH-P7400MP/XN/UC, DEH-P7450MP/XN/ES) Mark No. Description Part No. Mark No. Description Part No. 1 Screw BMZ30P040FZK 51 Arm CNV6508 2 Screw BMZ30P100FMC 52 Panel Unit CWM7986 3 Screw BSZ26P060FMC 53 Socket(CN1850) CKS3550 4 Screw BSZ30P040FMC...
  • Page 12 DEH-P740MP,P7400MP,P7450MP (2) CONTRAST TABLE DEH-P7400MP/XN/UC and DEH-P7450MP/XN/ES are constructed the same except for the following: Part No. Mark No. Symbol and Description DEH-P7400MP/XN/UC DEH-P7450MP/XN/ES 18 Tuner Amp Unit CWM8315 CWM8148 25 Panel CNS6934 CNS6935 60 Detach Grille Assy CXB8493 CXB8426...
  • Page 13 DEH-P740MP,P7400MP,P7450MP...
  • Page 14 DEH-P740MP,P7400MP,P7450MP 2.5 CD MECHANISM MODULE GEM1040 GEM1035 GEM1035...
  • Page 15 DEH-P740MP,P7400MP,P7450MP - CD MECHANISM MODULE SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 CD Core Unit(S9MP3) CWX2617 46 Gear CNV6320 2 Connector(CN901) CKS4186 47 Arm CNV6322 48 Arm CNV6323 3 Connector(CN101) CKS3486 4 Screw...

  • Page 16: Block Diagram And Schematic Diagram

    DEH-P740MP,P7400MP,P7450MP 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM(DEH-P740MP/XN/UC) TUNER AMP UNIT FM/AM TUNER UNIT FM/AM 1ST IF 10.7MHz MPXREF 41kHz CN401 AMRF T51 Q51 CF51 CF52 CF53 AMDET AMANT L ch IC 2 FM MPX R ch ANT1 ADJ COMP MIXER, IF AMP, DET.
  • Page 17 DEH-P740MP,P7400MP,P7450MP HIGH OUT RESET CN351 IC 961 OUT1 S-80735ANDZI Q351 IC 271 PA2028A CN352-1 OUT3 Q352 OUT5 Q353 SYSTEM CONTROLLER IC 601(1/2) PD5701A CN352-2 VDD REGULATOR Q911 CN901 BACKUP SENSE FUSE BSENS BACK UP Q931 TUNPCE ASENS TUNPCK ACC SENSE...
  • Page 18 DEH-P740MP,P7400MP,P7450MP 3.2 BLOCK DIAGRAM(DEH-P7400MP/XN/UC, DEH-P7450MP/XN/ES) TUNER AMP UNIT FM/AM TUNER UNIT FM/AM 1ST IF 10.7MHz MPXREF 41kHz CN401 AMRF T51 Q51 CF51 CF52 CF53 AMDET AMANT L ch IC 2 FM MPX R ch ANT1 ADJ COMP MIXER, IF AMP, DET.
  • Page 19 DEH-P740MP,P7400MP,P7450MP RESET CN351 IC 961 S-80735ANDZI Q351 Q353 SYSTEM CONTROLLER IC 601(1/2) PD5701A CN352-2 VDD REGULATOR Q911 CN901 BACKUP SENSE FUSE BSENS BACK UP Q931 TUNPCE ASENS TUNPCK ACC SENSE Q932 TUNPCE2 ILL SENSE TUNPDO ISENS ASENBO Q951 TELMUTE TELIN...
  • Page 20 DEH-P740MP,P7400MP,P7450MP 3.3 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)(DEH-P740MP/XN/UC) Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS LIST”. A-a A-b A-a A-b CD CORE UNIT(S9MP3) VD REGULATOR IP-BUS CN901 Large size IP-BUS:+2.2dBs SCH diagram Guide page CD:-0.2dBs...
  • Page 21 DEH-P740MP,P7400MP,P7450MP TUNER AMP UNIT LEVEL INDICATOR ELECTRONIC VOLUME, SOURCE SELECTOR MUTE HIGH OUTPUT FM:+10.1dBs AM: -0.4dBs IP-BUS:+14.9dBs CD:+15.4dBs REAR R CH MUTE REAR L CH PML009A L CH R CH FM: +2.6dBs AM: -7.9dBs FRONT L CH IP-BUS: +7.3dBs CD: +7.9dBs...
  • Page 22 DEH-P740MP,P7400MP,P7450MP...
  • Page 23 DEH-P740MP,P7400MP,P7450MP A-a B...
  • Page 24 DEH-P740MP,P7400MP,P7450MP...
  • Page 25 DEH-P740MP,P7400MP,P7450MP...
  • Page 26 DEH-P740MP,P7400MP,P7450MP 3.4 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)(DEH-P7400/XN/UC,P7450/XN/ES A-a A-b A-a A-b CD CORE UNIT(S9MP3) VD REGULATOR IP-BUS CN901 IP-BUS:+2.2dBs CD:-0.2dBs IP-BUS DRIVER NOTE : Symbol indicates a resistor. Decimal points for resistor No differentiation is made between chip resistors and and capacitor fixed values FM: -20.
  • Page 27 DEH-P740MP,P7400MP,P7450MP TUNER AMP UNIT LEVEL INDICATOR ELECTRONIC VOLUME, SOURCE SELECTOR MUTE FM:+3.84dBs AM:-6.66dBs IP-BUS:+8.54dBs CD:+9.14dBs R CH L CH PML009A FM: +2.6dBs AM: -7.9dBs FRONT IP-BUS: +7.3dBs L CH CD: +7.9dBs MUTE FRONT 5dBs R CH 0dBs 2dBs 2dBs MUTE...
  • Page 28 DEH-P740MP,P7400MP,P7450MP...
  • Page 29 DEH-P740MP,P7400MP,P7450MP A-a B...
  • Page 30 DEH-P740MP,P7400MP,P7450MP...
  • Page 31 DEH-P740MP,P7400MP,P7450MP...

  • Page 32: Keyboard Unit

    DEH-P740MP,P7400MP,P7450MP 3.5 KEYBOARD UNIT CN1851 3.3V REGULATOR REMOTE CONTROL SENSOR VOLUME DISP/SCRL PAUSE SFEQ ← BAND/ESC...

  • Page 33: Keyboard Unit

    DEH-P740MP,P7400MP,P7450MP KEYBOARD UNIT FONT ROM KEY CONTROL AND OEL CONTROL DEH-P740MP/XN/UC DEH-P7400MP/XN/UC DEH-P7450MP/XN/ES IC1902 PD8089A PD8088A PD8088A OEL UNIT MXS8017...
  • Page 34 DEH-P740MP,P7400MP,P7450MP 3.6 CD MECHANISM MODULE(GUIDE PAGE) CD CORE UNIT(S9MP3) D-RAM PICKUP UNIT(SERVICE) (P9MP3) SWITCHES: CD CORE UNIT(S9MP3) ..S901 : HOME SWITCH ON-OFF ..S902 : CLAMP SWITCH ON-OFF ..S903 : DSCSNS SWITCH ON-OFF ... S904 : 12EJ SWITCH ON-OFF ....
  • Page 35 DEH-P740MP,P7400MP,P7450MP SIGNAL LINE FOCUS SERVO LINE TRACKING SERVO LINE CARRIAGE SERVO LINE SPINDLE SERVO LINE & CN653...
  • Page 36 DEH-P740MP,P7400MP,P7450MP...
  • Page 37 DEH-P740MP,P7400MP,P7450MP...
  • Page 38 DEH-P740MP,P7400MP,P7450MP...
  • Page 39 DEH-P740MP,P7400MP,P7450MP...
  • Page 40 DEH-P740MP,P7400MP,P7450MP Note:1. The encircled numbers denote measuring points in the circuit diagram. 2. Reference voltage REFO1 : 1.65V - Waveforms 5 CH1:SIN 1 CH1:DSCSNS 5V/div. 1 CH1:DSCSNS 5V/div. 1V/div. 2 CH2:CLCONT 2 CH2:CLCONT 6 CH2:CIN 500mV/div. 5V/div. 5V/div. 2s/div. 500ms/div.
  • Page 41 DEH-P740MP,P7400MP,P7450MP 8 CH1:FIN 0 CH1:TE # CH1:RFAGC 1V/div. 500mV/div. 500mV/div. 200ms/div. 2ms/div. 0 CH2:TE ! CH2:FE # CH2:RFAGC 500mV/div. 500mV/div. 500µs/div. 500mV/div. 7 CH3:TIN 500mV/div. Focus Search 1Track Jump When "Tracking Open" Ref. : Ref. : Ref. : REFO REFO...

  • Page 42: Pcb Connection Diagram

    DEH-P740MP,P7400MP,P7450MP 4. PCB CONNECTION DIAGRAM 4.1 TUNER AMP UNIT TUNER AMP UNIT CORD ASSY CORD ASSY (OUTPUT,POWER (PREOUT) SUPPLY) NOTE FOR PCB DIAGRAMS 1. The parts mounted on this PCB include all necessary parts for several destination. For further information for...
  • Page 43 DEH-P740MP,P7400MP,P7450MP SIDE A IC,Q PRE OUT RL RR 8 10 12 14 18 20 22 24 IP-BUS 9 11 13 17 19 21 23 25 ANTENNA JACK 12 14 11 13 FRONT CN1850 CN901...
  • Page 44 DEH-P740MP,P7400MP,P7450MP TUNER AMP UNIT IC,Q...
  • Page 45 DEH-P740MP,P7400MP,P7450MP SIDE B...
  • Page 46 DEH-P740MP,P7400MP,P7450MP 4.2 PANEL UNIT PANEL UNIT PANEL UNIT SIDE B SIDE A CN1901 CN801 EJECT...
  • Page 47 DEH-P740MP,P7400MP,P7450MP 4.3 KEYBOARD UNIT SIDE A SIDE B KEYBOARD UNIT KEYBOARD UNIT ← CN1851 OEL UNIT OEL UNIT...

  • Page 48: Cd Mechanism Module

    DEH-P740MP,P7400MP,P7450MP 4.4 CD MECHANISM MODULE CD CORE UNIT(S9MP3) SIDE A 12EJ DSCSNS HOME REFO1...
  • Page 49 DEH-P740MP,P7400MP,P7450MP CD CORE UNIT(S9MP3) SIDE B CLAMP R790...

  • Page 50: Electrical Parts List

    DEH-P740MP,P7400MP,P7450MP 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 51 DEH-P740MP,P7400MP,P7450MP =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S0R0J RS1/16S222J RS1/16S0R0J RS1/16S104J RS1/16S272J RS1/16S473J RS1/16S272J RS1/16S0R0J RS1/16S162J RS1/16S473J RS1/16S162J RS1/16S472J RS1/16S102J RS1/16S473J RS1/16S102J RS1/16S473J RS1/16S102J RS1/16S0R0J RS1/16S102J...
  • Page 52 DEH-P740MP,P7400MP,P7450MP =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S472J CKSRYB105K10 RS1/16S102J CKSYB684K25 RS1/16S102J CASAQ4R7M16 RS1/16S822J CEJQ330M25 RS1/16S223J CEJQ330M25 RS1/16S223J CEHAR330M10 RS1/16S473J 4700µF/16V CCH1367 RD1/4PU102J CKSRYB104K16 RD1/4PU221J CEHAR100M16...
  • Page 53 DEH-P740MP,P7400MP,P7450MP =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CKSRYB103K50 Diode DAN202U CEJQ101M16 Diode DAN202U CEJQ100M16 Diode HZS9L(A2) CKSRYB104K16 Diode HZS9L(B1) CEJQ2R2M50 ZNR 451 Surge Protector DSP-201M-A21F CKSRYB473K25...
  • Page 54 DEH-P740MP,P7400MP,P7450MP =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S821J RS1/16S222J RS1/16S821J RS1/16S473J RS1/16S223J RS1/16S104J RS1/16S223J RD1/4PU391J RS1/16S223J RS1/16S222J RS1/16S223J RS1/16S222J RS1/16S0R0J RS1/16S331J RS1/16S0R0J RD1/4PU302J RS1/16S473J RD1/4PU302J RS1/16S473J...
  • Page 55 DEH-P740MP,P7400MP,P7450MP =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CKLSRB152K50 CEJQ101M10 CKLSRB152K50 CKSRYB104K16 CEJQ1R0M50 CKSRYB103K50 CEJQ1R0M50 CKSRYB472K50 CEJQR22M50 CKSRYB103K50 CEJQR22M50 CEJQ470M10 CEJQ1R0M50 330µF/10V CCH1181 CEJQ1R0M50 CKSRYB103K50 CEJQ1R0M50 CEJQ101M16...
  • Page 56 DEH-P740MP,P7400MP,P7450MP =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- Diode RB411D RS1/16S101J Diode 1SR139-400 RS1/16S0R0J Diode 1SR139-400 RS1/16S0R0J Diode 1SR139-400 RS1/16S0R0J Diode 1SR139-400 RS1/16S0R0J Diode 1SR139-400 RS1/16S103J Diode...
  • Page 57 DEH-P740MP,P7400MP,P7450MP =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S1R0J CKSRYB103K50 RS1/16S221J CKSRYB183K25 RS1/16S221J CKSRYB183K25 RS1/16S473J CEJQ470M10 RS1/16S473J CKSRYB104K16 RS1/16S102J CEJQ100M16 RS1/16S222J CCSRCH100D50 RS1/16S222J CCSRCH100D50 RS1/16S222J CCSRCH100D50 RS1/16S222J...
  • Page 58 DEH-P740MP,P7400MP,P7450MP =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CKSRYB104K16 1915 Switch CSG1107 CKSRYB103K25 1916 Switch CSG1107 CKSRYB473K25 1917 Switch CSG1107 CKSYB105K25 1918 Switch CSG1107 CEJQ470M16 1919 Switch CSG1107 4.7µF...
  • Page 59 DEH-P740MP,P7400MP,P7450MP =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CAPACITORS 1920 Switch CSG1107 1922 Switch CSG1107 1923 Switch CSG1107 1901 CKSYB105K25 1924 Switch CSG1107 1902 CKSRYB104K16 1930 Encoder(VOLUME)
  • Page 60 DEH-P740MP,P7400MP,P7450MP =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- 1910 CSZSR4R7M10 RS1/16SS102J 1911 CKSRYB103K25 RS1/16SS333J 1912 CSZSR4R7M10 RS1/16SS333J 1913 CKSRYB103K50 RS1/16SS333J 1914 CSZSR4R7M10 RS1/16SS0R0J 1941 CKSRYB104K25 RS1/16SS0R0J 1942...
  • Page 61 DEH-P740MP,P7400MP,P7450MP =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16SS473J CEV221M4 RS1/16SS473J CKSRYB224K16 RS1/16SS223J CKSSYB104K10 RS1/16SS473J CKSSYB104K10 RS1/16SS104J CKSSYB331K50 RS1/16SS104J CKSSYB331K50 RS1/16SS104J CKSSYB472K25 RS1/16SS472J CKSSYB472K25 RS1/16SS473J CEV101M16 RAB4CQ473J...

  • Page 62: Adjustment

    DEH-P740MP,P7400MP,P7450MP 6. ADJUSTMENT 6.1 OEL UNIT ADJUSTMENT Adjustment point KEYBOARD UNIT (SIDE B) CN1901 IC1901 VR1941 Digital Multi-Meter IC1902 <When the OEL Unit has been replaced> 1. Use VR1941 to adjust the resistance between TP1 and TP2 to 6.60kΩ.
  • Page 63 DEH-P740MP,P7400MP,P7450MP 6.2 CD ADJUSTMENT 1) Precautions 2) Test Mode • This unit uses a single power supply (+3.3V) for the This mode is used for adjusting the CD mechanism regulator. The signal reference potential, therefore, is module of the device.
  • Page 64 DEH-P740MP,P7400MP,P7450MP - Flow Chart [4]+[6]+Reset [KEY] Test Mode In Contents Display [CD] or [SOURCE] Source On [BAND] RF AMP Power On Power On New Test Mode Gain switching (T. offset is adjusted) (T. offset is not adjusted) [BAND] Tracking Servo...

  • Page 65: Checking The Grating After Changing The Pickup Unit

    DEH-P740MP,P7400MP,P7450MP 6.3 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 mecha- nism 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 66 DEH-P740MP,P7400MP,P7450MP Ech → Xch 20mV/div, AC Grating waveform Fch → Ych 20mV/div, AC 0° 30° 45° 60° 75° 90°...
  • Page 67 DEH-P740MP,P7400MP,P7450MP 6.4 CD TEST 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 68 DEH-P740MP,P7400MP,P7450MP - New Test Mode S-CD plays the same way as before. If an error such as off focus, spindle unlocking, unreadable sub-code, or sound skipping occurs after setup, its cause and time occurred (in absolute time) are displayed. During setup, operational status of the control software is displayed.
  • Page 69 DEH-P740MP,P7400MP,P7450MP (4) Display of Operational Status during Setup Status No. Contents Protective action Focus search start Focus search timeout. Focus search 2 Focus search timeout. Focus search 3 Focus search timeout. Focus search 4 Focus search timeout. Focus search(Setup protection) Focus slips off.
  • Page 70 DEH-P740MP,P7400MP,P7450MP (5) Display Examples 1) During Setup 8-digit display, 6-digit display 4-digit display(Auto setting) 4-digit display(Manual setting) TNO. Min Sec TNO. Min Sec 11 11' 11" 11' 11" 2) During Operation (TOC read, TRK search, Play, FF and REV) The same as in the normal mode.

  • Page 71: General Information

    DEH-P740MP,P7400MP,P7450MP 7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 DISASSEMBLY Removing the Case (not shown) 1. Remove the Case. CD Mechanism Module Removing the Grille Panel Assy (Fig.1) Remove the two screws and then remove the Grille Panel Assy. Removing the CD Mechanism Module (Fig.1) Remove the four screws and then remove the CD Mechanism Module.
  • Page 72 DEH-P740MP,P7400MP,P7450MP - Removing the OEL Unit 1. Apply hot air to the cable pins for the anode terminal using a Anode terminal blower used for removing a flat-packaged IC or something like that. When all the pins are peeling off from the PCB, pinch the cable with a pair of tweezers and remove it slowly from the PCB.
  • Page 73 DEH-P740MP,P7400MP,P7450MP - 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. - How to remove the Top and Bottom Frame Top Frame 1.
  • Page 74 DEH-P740MP,P7400MP,P7450MP - How to remove the CD Core Unit(S9MP3) 1. Give jumper-solder treatment to the Flexible Wire of Jumper-Solder the Pickup unit, then remove the wire from the CD Core Unit Connector. (S9MP3) 2. Remove all 4 points of solder-treatment on the Lead Wire.

  • Page 75: Connector Function Description

    DEH-P740MP,P7400MP,P7450MP 7.1.2 CONNECTOR FUNCTION DESCRIPTION DEH-P740MP/XN/UC SUB WOOFER NON-FADING OUTPUT FRONT OUTPUT 8 9 10 11 1 2 3 4 1. BUS+ 7. BL+ 1. GND 9. RL- ANTENNA 2. GND 8. ASENB 2. B.UP 10. FL- 3. GND 9. BR+ 3.
  • Page 76 DEH-P740MP,P7400MP,P7450MP DEH-P7400MP/XN/UC, P7450MP/XN/ES FRONT OUTPUT 8 9 10 11 1 2 3 4 1. BUS+ 7. BL+ 1. GND 9. RL- ANTENNA 2. GND 8. ASENB 2. B.UP 10. FL- 3. GND 9. BR+ 3. ACC 11. RL+ 4. NC 10.
  • Page 77 DEH-P740MP,P7400MP,P7450MP 7.2 IC PD5701A TSOP1840SB3V MSM51V4265EP-70TS PAL007A PD8088A BA5996FM PML009A PD8089A PE5268A PD5706A UPD63760GJ PDH043A S-818A33AUC-BGN BA033SFP - Pin Functions (PD5701A) Pin No. Pin Name Function and Operation TUNPDO TUNER:Data output(PLL) TUNPCK TUNER:Clock output(PLL) EMUTE EVOL:Mute output (Not used) EVOL:Strobe output...
  • Page 78 DEH-P740MP,P7400MP,P7450MP Pin No. Pin Name Function and Operation 58-61 Not used Power supply input(Vcc) CSENSOUT CSENS output Power supply input(Vss) 65-69 Not used HTELM TEL:Mute output for handsfree (Not used) TUNPCE2 TUNER:Chip enable output(EEPROM) TUNPCE TUNER:Chip enable output(PLL) BSENS Backup sense...
  • Page 79 DEH-P740MP,P7400MP,P7450MP PAL007A sw_vcc amp_vcc sw_vcc stby 16 17 24 25 10 11 12 13 14 15 18 19 20 21 22 23 PML009A Isolator SEL_out_L SEL_out_R Treble Middle Bass Source Gain adjuster Primary PV_in_L Anti PV_in_R Loudness Volume Alias Volume...
  • Page 80 DEH-P740MP,P7400MP,P7450MP - Pin Functions (PD5706A) Pin No. Pin Name Function and Operation Not used OPEN Remote control reception input BYTE GND connection CNVSS GND connection 8, 9 Not used OPEN reset Pull up XOUT Crystal oscillating element connection pin VSS connection...
  • Page 81 DEH-P740MP,P7400MP,P7450MP *PD8088A(DEH-P7400MP/XN/UC, P7450MP/XN/ES) *PD5706A *PD8089A(DEH-P740MP/XN/UC) *S-818A33AUC-BGN A15/A-1 :Data output/Address input A0-A19 :Address input ON/OFF D0-D19 :Data output byte/VPP :Mode select/Power supply byte/VPP :Chip enable input :Output enable input :Power supply :GND D15/A-1 ON/OFF VOUT *TSOP1840SB3V REGULATOR NOISE AGC GAIN DET.
  • Page 82 DEH-P740MP,P7400MP,P7450MP - Pin Functions (UPD63760GJ) Pin No. Pin Name Function and Operation R.GND GND for DRAM I/F Input of reset AB12-8 Address bus 12-8 from the microcomputer 8-15 AD7-0 Address/data bus 7-0 to the microcomputer Chip selection ASTB Address strobe...
  • Page 83 DEH-P740MP,P7400MP,P7450MP Pin No. Pin Name Function and Operation cas) Output of DRAM Lower CAS cas! Output of DRAM Upper CAS Output of DRAM WE Output of DRAM OE 73-88 RDB0-15 Input/output of DRAM Data0-15 D.GND Ground for digital circuits 90-99...
  • Page 84 DEH-P740MP,P7400MP,P7450MP *UPD63760GJ *MSM51V4265EP-70TS 44 VSS 43 DQ16 42 DQ15 41 DQ14 40 DQ13 39 VSS A0-A8 :Address input 38 DQ12 ras : Row address strobe 37 DQ11 lcas : Lower column address strobe ucas : Upper column address strobe 36 DQ10...
  • Page 85 DEH-P740MP,P7400MP,P7450MP - Pin Functions(BA5996FM) 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...
  • Page 86 DEH-P740MP,P7400MP,P7450MP - Pin Functions (PE5268A) Pin No. Pin Name Format Function and Operation FTXD For rewriting Flash EP-ROM (sending signals) Open Input of P-Bus serial data Output of P-Bus serial data bsck Input/output of P-Bus serial clock 6, 7 DFS1, 2...
  • Page 87 DEH-P740MP,P7400MP,P7450MP Pin No. Pin Name Format Function and Operation AVREF Input of reference voltage for A/D converter VDSENS Input of sensing short of VD power supply DSCSNS Input of sensing disc status TEMP Input of sensing information on temperature HOME...
  • Page 88 DEH-P740MP,P7400MP,P7450MP - FM/AM Tuner Unit FM/AM 1ST IF 10.7MHz MPXREF 41kHz AMRF T51 Q51 CF51 CF52 CF53 AMDET AMANT L ch IC 2 FM MPX R ch ANT ADJ COMP MIXER, IF AMP, DET. LDET FMANT RFGND FMRF CF202 IC 3...

  • Page 89: Operational Flow Chart

    DEH-P740MP,P7400MP,P7450MP 7.3 OPERATIONAL FLOW CHART Power ON VCC=5V Pin 16 BSENS Pin 73 BSENS=L ASENS Pin 74 ASENS=L DSENS Pin 41 DSENS=L ASENBO←H Pin 82 CSENS < < - CSENS 2V , 3V CSENS Pin 93 Last source returns. 2V<CSENS<3V CD and TAPE loading functions are available.

  • Page 90: Cleaning

    DEH-P740MP,P7400MP,P7450MP 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...

  • Page 91: Operations And Specifications

    DEH-P740MP,P7400MP,P7450MP 8. OPERATIONS AND SPECIFICATIONS 8.1 OPERATIONS HEAD UNIT ENTERTAINMENT button VOLUME OPEN button FUNCTION button CLOCK button DISPLAY button PAUSE button AUDIO button / / / buttons SELECT SFEQ button SOURCE button 1-6 buttons EQ button BAND/ESC button REMOTE CONTROL UNIT...
  • Page 92 DEH-P740MP,P7400MP,P7450MP...
  • Page 93 DEH-P740MP,P7400MP,P7450MP...

  • Page 94: Specifications

    Signal-to-noise ratio . 94 dB (1 kHz) Preout max output level/output impedance (IHF-A network) ........4 V/1 kΩ (DEH-P740MP/XN/UC) Dynamic range ..92 dB (1 kHz) ........2.2 V/1 kΩ (DEH-P7400MP/XN/UC) Number of channels .. 2 (stereo) Equalizer (3-Band Parametric Equalizer): MP3 decoding format MPEG-1&2 Audio Layer-3...
  • Page 95 DEH-P740MP,P7400MP,P7450MP DEH-P7450MP/XN/ES Tone controls: General (Bass) Power source ..... 14.4 V DC Frequency ..40/63/100/160 Hz (10.8 – 15.1 V allowable) Gain ....±12 dB(Treble) Grounding system ..Negative type Frequency ..2.5 k/4 k/6.3 k/10 k Hz Max. current consumption Gain ....

This manual is also suitable for:

Deh-p7400mpDeh-p7450mpDeh-p740mp/xn/ucDeh-p7400mp/xn/ucDeh-p7450mp/xn/es

Table of Contents