Pioneer CRT3820 Service Manual
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Pioneer CRT3820 Service Manual

Pioneer CRT3820 Service Manual

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CD RECEIVER
DEH-2950MP
DEH-2950MP
DEH-2990MP
This service manual should be used together with the following manual(s):
Model No.
Order No.
CX-3195
CRT3815
For details, refer to "Important Check Points for Good Servicing".
PIONEER CORPORATION
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 2006
Mech.Module
S10.5COMP2
CD Mech. Module : Circuit Descriptions, Mech. Descriptions, Disassembly
4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
DEH-2950MP/XN/ES
/XN/ES1
/XN/ID
Remarks
ORDER NO.
CRT3820
/XN/ES
K-ZZA. OCT. 2006 Printed in Japan

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  • Page 1 PIONEER CORPORATION 4-1, Meguro 1-chome, 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 2006 K-ZZA.

  • 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 [Important Check Points for Good Servicing] In this manual, procedures that must be performed during repairs are marked with the below symbol. Please be sure to confirm and follow these procedures. 1. Product safety Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by following the safety instructions described in this manual.

  • Page 4: Table Of Contents

    CONTENTS SAFETY INFORMATION ............................. 2 1. SPECIFICATIONS ............................5 2. EXPLODED VIEWS AND PARTS LIST ......................8 2.1 PACKING ..............................8 2.2 EXTERIOR............................... 10 2.3 CD MECHANISM MODULE........................12 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ..................14 3.1 BLOCK DIAGRAM ........................... 14 3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)................

  • Page 5: Specifications

    1. SPECIFICATIONS - - - - DEH-2950MP/XN/ES, DEH-2950MP/XN/ES1 DEH-2950MP/XN/ES...
  • Page 6 - - - - DEH-2990MP/XN/ID DEH-2950MP/XN/ES...
  • Page 7 DEH-2950MP/XN/ES...

  • Page 8: Exploded Views And Parts List

    2. EXPLODED VIEWS AND PARTS LIST OTES : • Parts marked by " * " are generally unavailable because they are not in our Master Spare Parts List. • The > mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation.
  • Page 9 (1) PACKING SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. Carton See contrast table(2) Cord Assy CDP1017 Contain Box See contrast table(2) Accessory Assy CEA6708 Protector CHP3279 Remote Control Assy CXC5719 Screw Assy CEA3849 Protector CHP3280 Screw CBA1650...

  • Page 10: Exterior

    2.2 EXTERIOR DEH-2950MP/XN/ES...
  • Page 11 EXTERIOR SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. Cover CNS8758 Screw BSZ26P060FTC CAW1930 Screw BSZ26P100FTC Screw BSZ26P180FTC Connector(CN1801) CKS5663 Cable CDE8336 Holder CND3646 Cord Assy CDP1017 Connector CNV9306 Lighting Conductor CNV9308 Remote Control Assy CXC5719 Rubber CNV9310...

  • Page 12: Cd Mechanism Module

    2.3 CD MECHANISM MODULE DEH-2950MP/XN/ES...
  • Page 13 CD MECHANISM MODULE SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. Rack CNV8342 CD Core Unit(S10.5COMP2) CWX3350 Connector(CN101) CKS4182 Roller CNV8343 Connector(CN701) CKS4808 Holder CNV8344 Screw BMZ20P025FTC CNV8345 Screw BSZ20P040FTC Guide CNV8347 CNV8348 Screw(M2 x 3) CBA1511 Screw(M2 x 4) CBA1835...

  • Page 14: Block Diagram And Schematic Diagram

    3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM TUNER AMP UNIT SYS+B SWVDD ANTENNA CN401 SL-IN EEPROM REFA REFB LDET SLOUT TANK MIX / IF / PLL ELEC FM/AM TUNER UNIT TUNL IN1_L IN2_L SYSPW SYSTEM M COMPUT IC 601(2 REGULATOR IC PN5010 CD CORE UNIT(S10.5COMP2)
  • Page 15 SYSTEM MICRO COMPUTER IC 601(1/2) PN5010A SL-IN CN351 IF_INA IF_INB REFA FREF_A REFB Q351 FREF_B LDET LOCK SLOUT CN901 ACC SENSE B.UP Q931 BACK UP ASENS L_OUT ASENS ELECTRONIC VOLUME/ SOURCE SELECTOR FL− FL− FL− TUNL Rear_L RLIn IC 301 IN1_L PAL007C RL−...

  • Page 16: Overall Connection Diagram(Guide Page)

    3.2 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 CN701 Guide page Detailed page ROT1 ROT0 ROMDATA SELFOUT VDCONT FLMD1 KEYD SYSTEM MICRO COMPUTER MODELAD...
  • Page 17 TUNER AMP UNIT > > DEH-2950MP/XN/ES...
  • Page 18 DEH-2950MP/XN/ES...
  • Page 19 DEH-2950MP/XN/ES...
  • Page 20 DEH-2950MP/XN/ES...
  • Page 21 DEH-2950MP/XN/ES...

  • Page 22: Keyboard Unit

    3.3 KEYBOARD UNIT LCD DRIVER/ KEY CONTROLLER DEH-2950MP/XN/ES...
  • Page 23 KEYBOARD UNIT CN831 INPUT LOUD FUNC DEH-2950MP/XN/ES...

  • Page 24: Cd Mechanism Module(Guide Page)

    3.4 CD MECHANISM MODULE(GUIDE PAGE) PICKUP UNIT(P10.5)(SERVICE) EEPROM SWITCHES: CD CORE UNIT(S10.5COMP2) S901:HOME SWITCH..ON-OFF S903:DSCSNS SWITCH..ON-OFF S904:12EJ SWITCH.....ON-OFF S905:8EJ SWITCH....ON-OFF The underlined indicates the switch position. M1 CXC7134 SPINDLE MOTOR M2 CXC4026 LOADING/CARRIAGE MOTOR CD DRIVER DEH-2950MP/XN/ES...
  • Page 25 CD CORE UNIT(S10.5COMP2) SIGNAL LINE FOCUS SERVO LINE TRACKING SERVO LINE CARRIAGE SERVO LINE SPINDLE SERVO LINE CN651 & DEH-2950MP/XN/ES...
  • Page 26 DEH-2950MP/XN/ES...
  • Page 27 DEH-2950MP/XN/ES...
  • Page 28 DEH-2950MP/XN/ES...
  • Page 29 DEH-2950MP/XN/ES...
  • Page 30 - Waveforms Note : 1. The encircled numbers denote measuring points in the circuit diagram. 2. Reference voltage REFO1(1.65 V) 1DSCSNS 1DSCSNS 1DSCSNS 5 V/div 500 ms/div 5 V/div 500 ms/div 5 V/div 500 ms/div 28SNS 5CLCONT 28SNS 5 V/div 5 V/div 5 V/div 312SNS...
  • Page 31 500 µs/div 500 µs/div %RFAGC %RFAGC %RFAGC 1 V/div 1 V/div 1 V/div 2 ms/div 500 mV/div 500 mV/div 500 mV/div 9TIN 9TIN 9TIN 500 mV/div 500 mV/div 500 mV/div 4 Tracks Jump waveform 10 Tracks Jump waveform 32 Tracks Jump waveform Ref.: Ref.: Ref.:...

  • Page 32: 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. For further information for respective destinations, be sure to check with the schematic dia- CORD ASSY gram.
  • Page 33 SIDE A REAR OUTPUT ANTENNA FRONT DEH-2950MP/XN/ES...
  • Page 34 TUNER AMP UNIT SCET TESTIN DEH-2950MP/XN/ES...
  • Page 35 SIDE B DEH-2950MP/XN/ES...

  • Page 36: Keyboard Unit

    4.2 KEYBOARD UNIT KEYBOARD UNIT KEYBOARD UNIT SIDE A SIDE B CN831 DEH-2950MP/XN/ES...
  • Page 37 DEH-2950MP/XN/ES...

  • Page 38: Cd Core Unit(S10.5Comp2)

    4.3 CD CORE UNIT(S10.5COMP2) CD CORE UNIT(S10.5COMP2) SIDE A CN651 PICKUP UNIT(P10.5)(SERVICE) LOADING /CARRIAGE MOTOR SPINDLE MOTOR DEH-2950MP/XN/ES...
  • Page 39 CD CORE UNIT(S10.5COMP2) SIDE B DEH-2950MP/XN/ES...

  • Page 40: Electrical Parts List

    5. ELECTRICAL PARTS LIST NOTE: 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..The > mark found on some component parts indicates the importance of the safety factor of the part. •...
  • Page 41 Circuit Symbol and No. Part No. Circuit Symbol and No. Part No. R 352 (B,164,135) RS1/16S223J R 839 (A,87,14) RD1/4PU222J R 353 (B,146,118) RS1/16S821J R 840 (A,85,14) RD1/4PU222J R 354 (B,164,126) RS1/16S821J R 841 (B,73,27) RS1/16S104J R 404 (B,156,44) RS1/16S102J R 873 (B,138,24) RS1/16S103J...
  • Page 42 Circuit Symbol and No. Part No. Circuit Symbol and No. Part No. C 615 (B,123,62) CKSRYB331K50 C 616 (B,123,69) CKSRYB105K10 D 1807 (A,38,126) LED(2950MP) CL-195SR-CD C 617 (B,129,61) CKSRYB105K10 (A,38,126) LED(2990MP) CL-195PG-CD C 618 (B,111,54) CCSRCH270J50 D 1808 (A,38,116) LED(2950MP) CL-195SR-CD C 619 (B,142,71)
  • Page 43 Circuit Symbol and No. Part No. Circuit Symbol and No. Part No. R 1832 (B,22,54) RS1/16S473J R 240 (B,10,31) RS1/16SS473J R 1833 (B,19,152) RS1/16S2R2J R 241 (B,9,32) RS1/16SS103J R 243 (A,35,69) RS1/16S0R0J R 1835 (B,15,149) RS1/16S101J R 1836 (B,9,156) RS1/16S103J R 244 (A,20,52) RS1/16SS473J...

  • Page 44: Adjustment

    6. ADJUSTMENT 6.1 CD ADJUSTMENT 1) Cautions on adjustments 2) Test mode • In this product the single voltage (3.3 V) is used for the This mode is used to adjust the CD mechanism module. regulator. The reference voltage is the REFO1 (1.65 V) •...
  • Page 45 - Flow Chart [Key] [4] + [6] + Reset or [4] + [6] + BU + ACC Contents Test Mode In Display [CD] or [SOURCE] Source On [BAND] Power On Power On RF AMP SPINDLE (T.Offset is adjusted) (T.Offset is not adjusted) Gain switching Speed switching 00 00 00...

  • Page 46: 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 47 Ech → Xch 20 mV/div, AC Grating waveform Fch → Ych 20 mV/div, AC 0° 30° 45° 60° 75° 90° DEH-2950MP/XN/ES...

  • Page 48: 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 49: System Microcomputer Test Program

    6.4 SYSTEM MICROCOMPUTER TEST PROGRAM - PCL Output In the normal operation mode (with the detachable panel installed, the ACC switched ON, the standby mode cancelled), shift the TESTIN IC601(Pin 112) terminal to H. The clock signal is output from the SCET IC601(Pin 43) terminal. The frequency of the clock signal is 1 Hz.

  • Page 50: General Information

    7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 DISASSEMBLY Removing the Case (not shown) 1. Remove the Case. CD Mechanism Module Removing the CD Mechanism Module (Fig.1) Remove the four screws. Disconnect the connector and then remove the CD Mechanism Module. Removing the Grille Assy (Fig.1) Release the two latchs and then remove the Grille Assy.
  • Page 51 - How to hold the Mechanism Unit 1. Hold the Upper and Lower Frames. 2. Do not hold the front portion of the Upper Frame, because it is not very solid. Do not squeeze this area. - Removing the Upper and Lower Frames 1.
  • Page 52 - How to remove the CD Core Unit Shorting Solder 1. Apply Shorting Solder to the flexible cable of the Pickup, and disconnect it from the connector. 2. Unsolder the four leads, and loosen the Screw. 3. Remove the CD Core Unit. Caution: When assembling the CD Core Unit, assemble it with the SW in a clamped state so as not to damage it.

  • Page 53: Connector Function Description

    7.1.2 CONNECTOR FUNCTION DESCRIPTION Pin No. Pin No. B. UP B.REM DEH-2950MP/XN/ES...

  • Page 54: Parts

    7.2 PARTS 7.2.1 IC PML014A - Block Diagram - Pin Layout IN1_L IN1_R IN2_R IN2_L IN3_L IN3_R IN4+_L IN4+_R IN4-_L IN4-_R Front_L Front_R Rear_R Rear_L Vref DATA DEH-2950MP/XN/ES...
  • Page 55 PAL007C 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-2950MP/XN/ES...
  • Page 56 - Pin Functions (PN5010A) Function and Operation Pin No. Pin Name Format Power supply output for display microcomputer SWVDD ILMPW Illumination power output Not used Self-rewriting applied voltage input 0(self mode : H) FLMD0 Regulator output capacitance stabilizing connection of masked ROM built-in item M_REGC Regulator output capacitance stabilizing connection of flash memory built-in item F_REGC...
  • Page 57 Function and Operation Pin No. Pin Name Format DACK Terminal for TUNER only Terminal for TUNER only Terminal for TUNER only Terminal for TUNER only WDCK Terminal for TUNER only 70-74 TEST1-5 Terminal for TUNER only AGND1 Terminal for TUNER only AVDD1 IF_INA Terminal for TUNER only...
  • Page 58 Function and Operation Pin No. Pin Name Format Signal level input Not used 137-140 MODELAD Model select terminal Wired remote control AD input KEYAD Not used A/D converter reference voltage AVREF0 PN5010A Format Meaning CMOS Nch open drain BA4918-V12 - Block Diagram - Pin Layout +BUP Overvoltage...
  • Page 59 - 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 KYDT...
  • Page 60 - Pin Functions (PE5547A) Function and Operation Pin No. Pin Name Format E2PROM : Data input/output ROMDATA ROMCK E2PROM : Clock output E2PROM : Chip select output ROMCS Not used LOAD/EJECT direction switching output LOEJ Disc sense input DSCSNS *sns 8 cm disc detection input !@sns 12 cm disc detection input...
  • Page 61 Function and Operation Pin No. Pin Name Format DA.VDD Power supply for DAC Ground for digital circuits D.GND D.VDD Power supply for digital circuits Capacitor connection for 1.6 V regulator REG16 3-wire audio LR clock output LRCK 3-wire audio serial I/F clock output SCKO 3-wire audio serial I/F data output DOUT...
  • Page 62 PE5547A Format Meaning CMOS Nch open drain - Pin Functions(BA5839FP) 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(+)
  • Page 63 - FM/AM Tuner Unit EEPROM TANK MIX / IF / PLL No. Symbol I/O Explain Antenna input. 75 Ω. Surge absorber is necessary. 1 ANT Antenna Input Series circuit including an inductor and a resistor is connected with RF ground for the countermeasure against the ham of power transmission line. 2 RFGND1 RF Ground Ground of R.F.

  • Page 64: Display

    7.2.2 DISPLAY - LCD(CAW1930) DEH-2950MP/XN/ES...

  • Page 65: Operational Flow Chart

    7.3 OPERATIONAL FLOW CHART Power ON Pin 8 bsens Pin 36 bsens = L asens Pin 35 asens = L Starts communication with Grille microcomputer. 300 ms SWVDD←H Pin 1 300 ms In case of the above signal, the communication Source keys with Grille microcomputer may fail.

  • Page 66: Operations

    8. OPERATIONS DEH-2950MP/XN/ES...
  • Page 67 DEH-2950MP/XN/ES...
  • Page 68 (CXX2204) DEH-2950MP/XN/ES...
  • Page 69 DEH-2950MP/XN/ES...
  • Page 70 - Jigs List Name Jig No. Remarks Test Disc TCD-782 Checking the grating L.P.F. Checking the grating g (Two pieces) - Grease List Name Grease No. Remarks Grease GEM1024 CD Mechanism Module Grease GEM1045 CD Mechanism Module Before shipping out the product, be sure to clean the following portions by using the prescribed cleaning tools: Portions to be cleaned...

This manual is also suitable for:

Deh-2950mp/xn/es1Deh-2990mp/xn/idDeh-2950mp/xn/es

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