Pioneer DEH-1900R/XU/EW5 Service Manual
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Pioneer DEH-1900R/XU/EW5 Service Manual

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CD RDS RECEIVER
DEH-1900R
DEH-1920R
This service manual should be used together with the following manual(s):
Model No.
Order No.
CX-3166
CRT3582
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
/XU/EW5
Mech.Module
S10.5STD
CD Mech. Module : Circuit Descriptions, Mech. Descriptions, Disassembly
4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
DEH-1900R/XU/EW5
Remarks
ORDER NO.
CRT3803
/XU/EW5
K-ZZA. OCT. 2006 Printed in Japan

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Summary of Contents for Pioneer DEH-1900R/XU/EW5

  • 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

    Transistors Q101 in PCB drive the laser diodes. When Q101 is shorted between their terminals, the laser diodes will radiate beam. If the top cover is removed with no disc loaded while such short-circuit is continued, the naked eyes may be exposed to the laser beam. DEH-1900R/XU/EW5...
  • Page 3 (shorting-solder) by referring to "the DISASSEMBLY". 4. After replacing the pickup unit, be sure to check the grating. 5. Be careful in handling ICs. Some ICs such as MOS type are so fragile that they can be damaged by electrostatic induction. DEH-1900R/XU/EW5...
  • Page 4 To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be installed before shipment. Please be sure to follow this method especially if it is specified in this manual. DEH-1900R/XU/EW5...

  • Page 5: Table Of Contents

    6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT.............42 6.3 ERROR MODE ............................44 7. GENERAL INFORMATION ..........................45 7.1 DIAGNOSIS..............................45 7.1.1 DISASSEMBLY............................45 7.1.2 CONNECTOR FUNCTION DESCRIPTION ..................48 7.2 PARTS ..............................49 7.2.1 IC ................................49 7.2.2 DISPLAY ..............................59 7.3 OPERATIONAL FLOW CHART ........................60 8. OPERATIONS ..............................61 DEH-1900R/XU/EW5...

  • Page 6: Specifications

    1. SPECIFICATIONS DEH-1900R/XU/EW5...
  • Page 7 DEH-1900R/XU/EW5...

  • Page 8: Exploded Views And Parts List

    • Screw adjacent to mark on the product are used for disassembly. • For the applying amount of lubricants or glue, follow the instructions in this manual. (In the case of no amount instructions,apply as you think it appropriate.) 2.1 PACKING DEH-1900R/XU/EW5...
  • Page 9 17-2 Owner's Manual CRD4144 Screw TRZ50P080FTC 17-3 Passport CRY1013 Polyethylene Bag CEG1160 Handle CND3707 17-4 Warranty Card CRY1157 Case Assy CXB3520 Bush CNV3930 Polyethylene Bag CEG1373 Owner's Manual,Installation Manual Part No. Language CRD4144, English, Spanish, German, French, Italian, Dutch, Russian CRD4131 DEH-1900R/XU/EW5...

  • Page 10: Exterior

    2.2 EXTERIOR DEH-1900R/XU/EW5...
  • Page 11 CBH2367 Spring CBH2961 Spring CBH2962 Cover CNN1665 Panel CNS8760 CNV9311 CNV9312 Detach Grille Assy(1900R) CXC6993 Detach Grille Assy(1920R) CXC7315 Screw BPZ20P100FTC Button(Detach) CAC9382 Button(1-6) CAC9863 Button(<,>,UP,DOWN) CAC9864 Button(1900R)(SOURCE,BAND) CAI1140 Button(1920R)(SOURCE,BAND) CAC9861 Button(1900R)(AUDIO,FUNC) CAI1141 Button(1920R)(AUDIO,FUNC) CAC9862 Spring CBH2210 Cover CNS8744 DEH-1900R/XU/EW5...

  • Page 12: Cd Mechanism Module

    2.3 CD MECHANISM MODULE DEH-1900R/XU/EW5...
  • Page 13 Bracket CND2583 CND2584 Lever CND2585 CND2586 Bracket CND2587 CND2588 Lever CND2589 Holder CNV7201 Gear CNV7207 Gear CNV7208 Gear CNV7209 Gear CNV7210 Gear CNV7211 Gear CNV7212 Rack CNV7214 CNV7216 Roller CNV8189 Gear CNV7219 Guide CNV7361 Gear CNV7595 Guide CNV8448 CNV7805 DEH-1900R/XU/EW5...

  • Page 14: Block Diagram And Schematic Diagram

    /RESET VO3(-) RESET CDRESET LDIN PA6/LOEJ VO3(+) PA5/CLCONT VO4(-) LOAD/ CARRIAGE BRST,BRXEN,BSRQ BRST,BRXEN,BSRQ,BDATA,BSCK MOTOR VO4(+) MUTE PA4/CONT BDATA,BSCK Q991 CD VD B.UP Q992 PA1/12SNS PA2/8SNS PA3/DSCSNS PA0/HOME VDCONT VDCONT VDDCONT S904 S905 S901 PB1/VDCONT 12EJ HOME S903 DSCSNS PB2/VDSENS DEH-1900R/XU/EW5...

  • Page 15: Keyboard Unit

    S1824 S1822 ILMPW FUNC EJECT S1830 VDCONT SOURCE SOURCE S1831 ROT1 ROT1 ROT1 ROT0 ROT0 ROT0 KEY DATA VOLUME X1801 5MHz DPDT DPDT DPDT DPDT/SELF LCD DRIVER/ KEY CONTROLLER KYDT KYDT KYDT KEYDT/SELF IC 1801 SWVDD VLCD PD6340A LCD1801 DEH-1900R/XU/EW5...

  • Page 16: Overall Connection Diagram(Guide Page)

    No differentiation is made between chip capacitors and 0.022 R022 discrete capacitors. The > mark found on some component parts indicates CN1801 the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. D832 FTZ6R8E DEH-1900R/XU/EW5...
  • Page 17 TUNER AMP UNIT REAR OUTPUT > R648 > − BACK − − − WIRED REMOTE DEH-1900R/XU/EW5...
  • Page 18 DEH-1900R/XU/EW5...
  • Page 19 DEH-1900R/XU/EW5...
  • Page 20 DEH-1900R/XU/EW5...
  • Page 21 DEH-1900R/XU/EW5...

  • Page 22: Keyboard Unit

    3.3 KEYBOARD UNIT LCD DRIVER/ KEY CONTROLLER DEH-1900R/XU/EW5...
  • Page 23 KEYBOARD UNIT CN831 DEH-1900R/XU/EW5...

  • Page 24: Cd Mechanism Module

    3.4 CD MECHANISM MODULE CD CORE UNIT(S10.5) PICKUP UNIT(P10.5)(SERVICE) M1 CXC7134 SPINDLE MOTOR M2 CXC4026 LOADING/CARRIAGE MOTOR SWITCHES: CD CORE UNIT(S10.5) S901:HOME SWITCH..ON-OFF S903:DSCSNS SWITCH..ON-OFF CD DRIVER S904:12EJ SWITCH.....ON-OFF S905:8EJ SWITCH....ON-OFF The underlined indicates the switch position. DEH-1900R/XU/EW5...
  • Page 25 SIGNAL LINE FOCUS SERVO LINE TRACKING SERVO LINE CARRIAGE SERVO LINE SPINDLE SERVO LINE CD DSP CN651 & DEH-1900R/XU/EW5...
  • Page 26 1 V/div # FE % RFAGC @ TE 500 mV/div 500 mV/div 500 mV/div 9 TIN 500 mV/div Focus Search waveform Track Open waveform 1 Track Jump waveform Ref.: Ref.: Ref.: REFO REFO REFO Mode: Mode: Mode: TEST TEST TEST DEH-1900R/XU/EW5...
  • Page 27 5 V/div 5 V/div 1 V/div 4 LOEJ 0 FIN 5 V/div 1 V/div Black dot(800 µm) during play 12 cm CD Eject operation 8 cm CD Eject operation Ref.: Ref.: Ref.: REFO Mode: Mode: Mode: Normal Normal Normal DEH-1900R/XU/EW5...

  • Page 28: Pcb Connection Diagram

    For further information for respective destinations, be sure WIRED REMOTE INPUT to check with the schematic dia- CORD ASSY gram. 2.Viewpoint of PCB diagrams Capacitor Connector SIDE A SIDE B Chip Part P.C.Board CN702 CN1801 DEH-1900R/XU/EW5...
  • Page 29 SIDE A REAR OUTPUT ANTENNA FRONT DEH-1900R/XU/EW5...
  • Page 30 TUNER AMP UNIT DEH-1900R/XU/EW5...
  • Page 31 SIDE B DEH-1900R/XU/EW5...

  • Page 32: Keyboard Unit

    4.2 KEYBOARD UNIT KEYBOARD UNIT KEYBOARD UNIT SIDE A SIDE B CN831 DEH-1900R/XU/EW5...
  • Page 33 DEH-1900R/XU/EW5...

  • Page 34: Cd Core Unit(S10.5)

    4.3 CD CORE UNIT(S10.5) CD CORE UNIT(S10.5) SIDE A CN651 PICKUP UNIT(P10.5)(SERVICE) LOADING /CARRIAGE MOTOR SPINDLE MOTOR DEH-1900R/XU/EW5...
  • Page 35 CD CORE UNIT(S10.5) SIDE B DEH-1900R/XU/EW5...

  • Page 36: Electrical Parts List

    R 351 (B,163,128) RS1/16S223J R 352 (B,163,132) RS1/16S223J D 912 (A,43,78) Diode MPG06G-6415G3 R 353 (B,145,115) RS1/16S821J D 931 (A,63,106) Diode HZS7L(A1) R 354 (B,163,124) RS1/16S821J D 991 (A,17,110) Diode HZS7L(C3) R 404 (B,155,42) RS1/16S102J L 151 (A,135,103) Inductor LAU2R2K DEH-1900R/XU/EW5...
  • Page 37 C 613 (A,102,56) CEAL101M6R3 R 837 (A,74,16) RD1/4PU103J R 839 (A,86,12) RD1/4PU222J C 614 (B,166,86) CKSRYB102K50 R 840 (A,84,12) RD1/4PU222J C 615 (B,122,59) CKSRYB331K50 R 841 (B,72,25) RS1/16S104J C 616 (B,122,67) CKSRYB105K10 R 851 (B,82,69) RS1/16S472J C 617 (B,128,58) CKSRYB105K10 DEH-1900R/XU/EW5...
  • Page 38 D 1804 (A,15,23) LED(1900R) CL-195SR-CD (A,15,23) LED(1920R) CL-195PG-CD Unit Number : CWX3090 D 1805 (A,27,12) LED(1900R) CL-195SR-CD Unit Name : CD Core Unit(S10.5) (A,27,12) LED(1920R) CL-195PG-CD D 1806 (A,36,62) LED(1900R) CL-195SR-CD (A,36,62) LED(1920R) CL-195PG-CD MISCELLANEOUS D 1807 (A,36,52) LED(1900R) CL-195SR-CD DEH-1900R/XU/EW5...
  • Page 39 C 103 (B,54,64) CEVW101M16 C 203 (A,35,60) CKSSYB104K10 C 205 (B,43,51) CEVW220M6R3 C 206 (A,32,60) CKSSYB103K16 C 209 (A,28,60) CKSRYB104K10 C 210 (A,24,55) CKSSYB104K10 C 211 (A,24,54) CKSSYB104K10 C 212 (A,34,40) CKSSYB104K10 C 213 (A,43,39) CKSSYB103K16 C 214 (A,42,39) CKSSYB104K10 DEH-1900R/XU/EW5...

  • Page 40: Adjustment

    1k ohms in series. • The load and eject operation is not guarantied with the mechanism upside down. If the mechanism is blocked due to mistaken eject operation, reset the product or turn off and on the ACC to restore it. DEH-1900R/XU/EW5...
  • Page 41 • When the power is turned on/off the jump mode is reset to the Single TR (91) while the gain of the RFAMP is reset to 0 dB. At the same time all the self-adjusting values shall return to the default setting. DEH-1900R/XU/EW5...

  • Page 42: Checking The Grating After Changing The Pickup Unit

    Because of eccentricity in the disc and a slight misalignment of the clamping center the grating waveform may be seen to "wobble" ( the phase difference changes as the disc rotates). The angle specified above indicates the average angle. • Hint Reloading the disc changes the clamp position and may decrease the "wobble". DEH-1900R/XU/EW5...
  • Page 43 Ech → Xch 20 mV/div, AC Grating waveform Fch → Ych 20 mV/div, AC 0° 30° 45° 60° 75° 90° DEH-1900R/XU/EW5...

  • Page 44: Error Mode

    Remarks: Mechanical errors are not displayed (because a CD is turned off in these errors). Unreadable TOC does not constitute an error. An intended operation continues in this case. Upper digits of an error code are subdivided as shown below: 1x: Setup relevant errors, 3x: Search relevant errors, Ax: Other errors. DEH-1900R/XU/EW5...

  • Page 45: General Information

    Fig.1 Grille Assy Removing the Tuner Amp Unit (Fig.2) Remove the two screws. Remove the two screws. Straighten the tabs at two locations indicated. Remove the two screws and then remove the Tuner Amp Unit. Tuner Amp Unit Fig.2 DEH-1900R/XU/EW5...
  • Page 46 Upper Frame. 3. While lifting the Carriage Mechanism, remove it from the three Dampers. Caution: When assembling, be sure to apply some alcohol to the Dampers and assemble the mechanism in a clamped state. Damper Damper Carriage Mechanism Lower Frame DEH-1900R/XU/EW5...
  • Page 47 Assemble the sub unit side of the Pickup, taking the plate (Chassis) in-between. When treating the leads of the Load Carriage Motor Assy, do not make them loose over the Feed Screw. Poly Washer Change Arm Pickup Lock Arm Inner Holder Feed Screw Planet Gear Pickup Rack Chassis Pickup DEH-1900R/XU/EW5...

  • Page 48: Connector Function Description

    7.1.2 CONNECTOR FUNCTION DESCRIPTION Pin No. Pin No. B. UP B.REM DEH-1900R/XU/EW5...

  • Page 49: 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-1900R/XU/EW5...
  • Page 50 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-1900R/XU/EW5...
  • Page 51 BU_RESET Backup circuit reset input Terminal for TUNER only DVDD3 DGND2 Terminal for TUNER only Terminal for TUNER only L_OUT Terminal for TUNER only R_OUT Terminal for TUNER only COMP Terminal for TUNER only AVDD2 Terminal for TUNER only DEH-1900R/XU/EW5...
  • Page 52 SELFOUT Not used 117,118 GND for port BVSS BVDD VDD for port DVDDD4 DGND3 E.VOL strobe output E.VOL data output E.VOL clock output CD mechanism power supply output VDCONT Not used Self-rewriting applied voltage input 1(fixed to L) FLMD1 DEH-1900R/XU/EW5...
  • Page 53 - Block Diagram +BUP Overvoltage Overvoltage Protection Protection (All Ourput OFF) (OFF except VDD) Pre Reg Vref SW5VCONT SW5V SYSPW SYS+B - Pin Layout VDDCONT SWVDD +BUP BSENS SYS+B SWVDD Reduced-voltage Detection SW5V SW5VCONT SYSPW BSENS VDDCONT Overvoltage Detection DEH-1900R/XU/EW5...
  • Page 54 Key data output MODA Crystal oscillator connection pin Crystal oscillator connection pin 25,26 KDT2,3 Key data input Not used KST4 Key strobe output 29-32 Not used 33-55 SEG35-13 LCD segment output Power supply 57-64 SEG12-5 LCD segment output PD6340A DEH-1900R/XU/EW5...
  • Page 55 Ground for the digital port IO.GND Power supply for the digital port IO.VDD Focus drive output (PWM) Tracking drive Sled drive Motor drive output (PWM) TEST Test Ground for the A/D converter AD.GND Power supply for the A/D converter AD.VDD EFM signal DEH-1900R/XU/EW5...
  • Page 56 Impedance connection to focus error amp for negative feedback Focus error amp output A/D converter input ADCIN Impedance connection to tracking error amp for negative feedback Tracking error amp output Tracking error amp output multiplied by two Tracking error comparator PE5497B DEH-1900R/XU/EW5...
  • Page 57 Output pin for preamplifier for thread OPINLSL Input pin for preamplifier for thread OPOUT3 CH3 preamplifier output pin OPIN3(-) Input pin for inverting input for CH3 preamplifier OPIN3(+) Input pin for non-inverting input for CH3 preamplifier PREVCC PreVcc BA5839FP DEH-1900R/XU/EW5...
  • Page 58 Chip enable for FE_IC "High" active 18 DO Data Out Data output 19 CE2 Chip Enable-2 Chip enable for EEPROM "Low" active. in power ON/OFF, please turn CE2 into "High" (= VDD). 20 SLOUT Signal Level Output Output of FM/AM signals level (D.C.) DEH-1900R/XU/EW5...

  • Page 59: Display

    7.2.2 DISPLAY - LCD(CAW1930) DEH-1900R/XU/EW5...

  • Page 60: Operational Flow Chart

    In case of the above signal, the communication Source keys with Grille microcomputer may fail. operative If the time interval is not 300 msec, the oscillator may be defective. Source ON SYSPW←H Pin 15 Completes power-on operation.(After that, proceed to each source operation.) DEH-1900R/XU/EW5...

  • Page 61: Operations

    8. OPERATIONS DEH-1900R/XU/EW5...
  • Page 62 (BPZ20P080FTC) DEH-1900R/XU/EW5...
  • Page 63 DEH-1900R/XU/EW5...
  • Page 64 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 Cleaning tools CD pickup lenses Cleaning liquid : GEM1004 Cleaning paper : GED-008 g p p DEH-1900R/XU/EW5...

This manual is also suitable for:

Deh-1920r/xu/ew5Cx-3166

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