Pioneer DEH-4280SD Service Manual
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Pioneer DEH-4280SD Service Manual

Pioneer DEH-4280SD Service Manual

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CD RECEIVER
DEH-4280SD
This service manual should be used together with the following manual(s):
Model No.
Order No.
CX-3269
CRT4488
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 2009
Mech. Module
S11STD-DOUT
CD Mech. Module : Circuit Descriptions, Mech. Descriptions, Disassembly
4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan
DEH-4250SD/XNES
Remarks
ORDER NO.
CRT4505
K-ZZZ NOV. 2009 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 2009 K-ZZZ NOV.

  • Page 2: Panel Facilities

    CAUTION Use an optional Pioneer USB cable (CD-U51E) to connect the USB audio player/USB memory to the USB port. Since the USB audio player/USB memory is projected forward from the unit, it is dangerous to connect directly.
  • Page 3 Display indication Shuffle or shuffle all function is (shuf- on while the iPod source is being fle) selected. The sound retriever function is (sound re- triever) 4 6 8 CTRL (control mode) is set to iPod iPod. Only for ES, ES1, ID memory SD/SDHC memory card is in- Indicator...

  • Page 4: Connection Diagram

    2.4 CONNECTION DIAGRAM DEH-4250SD/XNES, DEH-4250SD/XNES1 DEH-4250SD/XNES...
  • Page 5 DEH-4250SD/XNES...
  • Page 6 DEH-4290SD/XNID Wired remote input Power amp Hard-wired remote control adaptor (sold separately) can be connected (sold separately). Front output Connect with RCA cables This product (sold separately) Power amp (sold separately) Antenna jack Rear output or subwoofer output Fuse (10 A) Yellow Connect to the constant 12 V System remote control...
  • Page 7 DEH-3200UB/XNUC DEH-4250SD/XNES...
  • Page 8 DEH-4250SD/XNES...

  • Page 9: Block Diagram

    4. BLOCK DIAGRAM TUNER AMP UNIT :DEH-4250SD/XNES :DEH-4250SD/XNES1 JA401 :DEH-4290SD/XNID ANTENNA :DEH-3200UB/XNUC SYSTEM M COMPU IC60 PEG640 AMANT FMANT TUNL TUNPCE2 TUNPCE1 TUNPCK TUNPDO TUNPDI RESET SYS8V IC651 TUNER3V REG. ROM_VDD VDD3.3 RESET VDD3.3 S-80827CNNB-B8M VDD_3.3 IC431 SYS8V NJM2885DL1-33 S651 JA661 KEYAD KEYAD...
  • Page 10 E.VOL IC201 PM9012A JA301 TUNL S4B-L OUTFL AUXL S1Q+L OUTRL SYSTEM MICRO Q301 COMPUTER OUTPL S5B+L IC601 PEG640A8 Q303 TUNPCE2 Q382 TUNPCE1 DATA TUNPCK TUNPDO TUNPDI MUTE Q381 VDD5V REG. Q901 VDD5 RESET Q902 DALMON IC351 PA2030A JA981 KEYAD OUT1(+) KEYD OEL+B OUT1(-)
  • Page 11 FM/AM TUNER UNIT 10 9 8 18 19 5V → 3.3V EEPROM 5.0V AM ANT FMRF 3.3V 2.5V MIXER, IF AMP FM ANT DET, FM MPX FMRF RF adj ANT adj CF52 3.3V → 2.5V 2.5V 3.3V DEH-4250SD/XNES...

  • Page 12: Operational Flow Chart

    5. DIAGNOSIS 5.1 OPERATIONAL FLOWCHART Power ON VCC1 = 3.3 V Pin 14 BSENS Pin 16 BSENS = L ASENS Pin 18 ASENS = L DSENS Pin 17 Starts communication with Grille microcomputer. 500 ms SWVDD <- H Pin 47 500 ms In case of the above signal, the communication Source keys...

  • Page 13: Error Code List

    5.2 ERROR CODE LIST ERROR CODES If a CD memory device is inoperable, or operation of such media is stopped by an error, the error mode is established and a cause of the error is displayed by an error code. Indication of error codes is intended to reduce the number of calls from customers and facilitate failure analysis and repair work in servicing.

  • Page 14: Connector Function Description

    5.3 CONNECTOR FUNCTION DESCRIPTION R/SW, F OUTPUT ANTENNA WIRED REMOTE CONTROL 15 13 11 9 7 5 3 1 16 14 12 10 8 6 4 2 9 NC 1 FL+ 10 NC 2 FR+ 3 FL- 11 NC 4 FR- 12 NC 13 ACC 5 RL+...

  • Page 15: Service Mode

    6. SERVICE MODE 6.1 DISPLAY TEST MODE The information such as the system version is checked and the lighting of every segment on the display is checked. [Operation key] Corresponding key Processing Remarks CLK/DISP OFF + LIST Switching to next test display Also used as an entry key [Test item] Test mode is started...

  • Page 16: Cd Test Mode

    6.2 CD TEST MODE - Flow Chart NOTE When a CD-DA (regular music CD) is played in the CD test mode, its sound quality [Key] [3] + [DISP] -> Reset [CD] or [SOURCE] will be temporarily deteriorated. The CD will then repeat normal, deteriorated, Test Mode IN Source ON normal…...
  • Page 17 7. DISASSEMBLY While the photograph shown is slightly different from this model in shape, the disassembly procedure is the same. - Removing the Case (not shown) 1. Remove the Case. - Removing the CD Mechanism Module (Fig.1) CD Mechanism Module Release the two latches and then remove the Panel Assy.
  • Page 18 How to Hold the Mechanism Unit 1. Hold the Upper and Lower Frames at the specified parts (circled with broken blue lines in the photo below). 2. You can hold the tabs of the Lower Frame (circled with broken green lines in the photo below) if you do so only while lifting the Mechanism Unit from the table.
  • Page 19 Mechanism Module: How to Set to the Quasi-Clamp State (Driven by the Motor) 1. Remove the solder from the CRG-motor lead wire (Fig. 1). 2. Push in the Disc Detection Arm while applying 4-V power to the CRG Motor (Fig. 2). (Apply 4-V power to the green lead wire.
  • Page 20 How to Remove the PU Unit 1. Set the unit to the quasi-clamp state, following the procedures described in “Mechanism Module: How to Set to the Quasi- Clamp State (Driven by the Motor).” 2. Temporarily change the engagement position of the bias spring of the feed screw (Fig. 2b). Be careful not to cut yourself on the tip of the spring.
  • Page 21 How to Remove the PU Rack 1. Remove the PU Unit, following the procedures described in “How to Remove the PU Unit.” 2. Remove the PU Rack fixing screw (Fig. 1). 3. Remove the PU Rack, by applying force in the direction of the arrow in Fig. 2. Notes: While handling the PU Unit, be careful NOT to touch the actuator block shown in Fig.
  • Page 22 How to Hold the PU 1. Be sure to hold the PU at the positions shown in “Proper handling.” NEVER hold it as shown in “Improper handling.” Proper handling Improper handling Do not touch the object lens and ACT. Do not touch the VR. Do not touch the Hologram.

  • Page 23: Each Setting And Adjustment

    8. EACH SETTING AND ADJUSTMENT 8.1 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. To enter the test mode. regulator.

  • Page 24: Checking The Grating After Changing The Pickup Unit

    8.2 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 25 Grating waveform Ech -> Xch 20 mV/div, AC Fch -> Ych 20 mV/div, AC 0 degrees 30 degrees 45 degrees 60 degrees 75 degrees 90 degrees DEH-4250SD/XNES...

  • Page 26: Exploded Views And Parts List

    9. 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 27 PACKING SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. Polyethylene Bag CEG-127 Unit Box See Contrast table (2) Screw TRZ50P080FTC Contain Box See Contrast table (2) Screw See Contrast table (2) Protector See Contrast table (2) Case Assy See Contrast table (2) Protector...
  • Page 28 9.2 EXTERIOR(1) DEH-4250SD/XNES...
  • Page 29 EXTERIOR(1) SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. Holder CND5407 Holder CND3598 Double Side Tape CNN1878 Panel CNU1016 Holder CNW1754 Detach Grille Assy See Contrast table (2) Screw BPZ20P100FTC OEL Module See Contrast table (2) Button(DETACH) CAI2688 Grille Unit...
  • Page 30 9.3 EXTERIOR(2) DEH-4250SD/XNES DEH-4250SD/XNES1 DEH-4290SD/XNID DEH-4250SD/XNES...
  • Page 31 EXTERIOR(2) SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. Holder CND4324 Screw ASZ26P050FTC > Fuse(10 A) YEK5001 Screw BSZ26P060FTC Heat Sink YNR5139 Screw BSZ26P100FTC SD Unit See Contrast table (2) Cable CDE9106 Cable See Contrast table (2) Holder See Contrast table (2) Button...

  • Page 32: Cd Mechanism Module

    9.4 CD MECHANISM MODULE ( C ) ( C ) ( C ) ( A ) ( A ) ( D ) ( A ) ( D ) ( C ) ( B ) ( D ) ( A ) ( A ) ( C ) ( A )
  • Page 33 CD MECHANISM MODULE SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. Damper CNW1198 Screw BMZ20P020FTC Screw BSZ20P040FTC CNW1726 Screw(M2 x 4) CBA1835 Motor Unit(M2)(LOAD/CRG) CXC4026 Washer CBF1038 Screw Unit CXC8894 Spring CBH3010 Arm Assy CXC8896 Washer CBF1037 Spring...

  • Page 34: Schematic Diagram

    10. SCHEMATIC DIAGRAM 10.1 TUNER AMP UNIT 1/2 [MAIN] (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 A:DEH-4250SD/XNES E.VOL uCOM_BUS uCOM_BUS B:DEH-4250SD/XNES1 FM:-24.00 dBs AM:-24.00 dBs C:DEH-4290SD/XNID...
  • Page 35 The > mark found on some component parts indicates TUNER AMP UNIT (MAIN) the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. RCA OUT C305 R305 R313 CCG1192-A JA301 10U/10 YKB5011- FM: -6.00 dBs...
  • Page 36 DEH-4250SD/XNES...
  • Page 37 DEH-4250SD/XNES...
  • Page 38 DEH-4250SD/XNES...
  • Page 39 DEH-4250SD/XNES...

  • Page 40: Tuner Amp Unit 2/2 [Media Ucom] (Guide Page)

    10.2 TUNER AMP UNIT 2/2 [MEDIA Ucom] (GUIDE PAGE) MECHA VD Q751 7.63V 2SD2396(K) Q752 R751 R752 C2 3 1608 1608 B1 2 5 B2 VDCONT E1 1 6 C1 RT3T22M VDCONT MECHA VDSENS VDD33 CN701 VKN1192-A X2 3 GND2 R705 220 CDSRQ GND1...
  • Page 41 TUNER AMP UNIT (MEDIA uCOM) A:DEH-4250SD/XNES B:DEH-4250SD/XNES1 C:DEH-4290SD/XNID D:DEH-3200UB/XNUC DACMUTE DEEMPH R185 FORMAT C193 R191 DACCLK R551 C196 680p/50 C181 L501 C190 VTL1145-A 3.28V C182 1000p/10 3.3V CCG1192-A 3.3V 10u/10 DACLRCK 1.2V 1.2V DACDATA C194 R192 DACSCK C183 0.01u/16 0.1u/10 C530 AVCC C184...
  • Page 42 DEH-4250SD/XNES...
  • Page 43 DEH-4250SD/XNES...
  • Page 44 DEH-4250SD/XNES...
  • Page 45 DEH-4250SD/XNES...

  • Page 46: Keyboard Unit

    10.3 KEYBOARD UNIT A:DEH-4250SD/XNES B:DEH-4250SD/XNES1 C:DEH-4290SD/XNID D:DEH-3200UB/XNUC KEYBOARD UNIT R1818 CSX1120-A Phase_B Push S1811 3.29V ILMGND R1815 R1816 3.3k 1.8k Grille MICRO X1901 R1894 CSS1577-A 10.000MHz BAND S.Rtrv CSG1155-A CSG1155-A RESET S1871 S1877 DISP LIST CSG1155-A CSG1155-A R1893 R1891 S1872 S1878 DGND CSG1155-A...
  • Page 47 R1818 CSX1120-A Phase_B Phase_A ILMGND Push Enc_Com ROTARY COMMANDER JA1801 YKN5006-A R1801 5 Com JOYST(V) over~under R1802 A(UP) 0.00 0.16 S1811 AUX:+2.20 dBs B(LEFT) 0.16 0.54 LMGND DGND R1815 C(DOWN) 0.54 1.00 PUSH D(RIGHT) 1.00 1.59 1.8k PUSH 1.59 2.31 RELEASE 2.31 3.16...

  • Page 48: Cd Core Unit(S11Std-Dout)

    10.4 CD CORE UNIT(S11STD-DOUT) CXX1942 PICKUP UNIT(P10.5)(SERVICE) V3R3 E:P5+P10 F:P1+P6 R106 REFO PUEN Q102 UNR511MG Q101 R109 2.2k 2SA1577(QR) R215 V+3A ATEST V+3A P5+P10 P1+P6 REFO VREF A.Vdd1 C221 A.GND1 0.1u/10 C216 1800p/50 RFAGC AGCO C220 HOLOGRAM UNIT C219 0.1u/10 AGCI 0.1u/10 FOCUS ACT...
  • Page 49 CD CORE UNIT(S11STD-DOUT) C232 PUEN 1000p/50 SIGNAL LINE C231 R263 FOCUS SERVO LINE 1000p/50 4.7k TRACKING SERVO LINE CARRIAGE SERVO LINE R262 SPINDLE SERVO LINE 4.7k TEMP TEMP R215 TH201 Q201 TESTIN ATEST ADENA ADENA R721 R225 /WAIT A.Vdd1 Mask Flash R281 R723...
  • Page 50 10.5 SD UNIT A:DEH-4250SD/XNES B:DEH-4250SD/XNES1 C:DEH-4290SD/XNID D:DEH-3200UB/XNUC SD UNIT (A,B,C only) CN1202 VKN1302-A SD_DATA1 SD_DATA0 SD_CLK 3.29V SD33V SD_CMD CN781 SD_DATA3 SD_DATA2 SD_WP SD_CD GND3 GND5 CD/WP GND4 GND6 CN1203 CKS6180-A DEH-4250SD/XNES...

  • Page 51: Electrical Parts List

    12. 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. Therefore, when replacing, be sure to use parts of identical designation.
  • Page 52 Circuit Symbol and No. Part No. Circuit Symbol and No. Part No. D 801 (A,116,14) Diode DZ2S068C R 192 (A,92,104) RS1/16SS821J D 802 (A,119,14) Diode DZ2S068C R 201 (A,69,124) RAB4CQ102J D 803 (A,122,13) Diode DZ2S068C R 202 (A,80,105) RS1/16SS331J D 804 (A,123,13) Diode DZ2S068C R 207...
  • Page 53 Circuit Symbol and No. Part No. Circuit Symbol and No. Part No. R 577 (A,142,33) RAB4CQ221J R 578 (A,138,35) RAB4CQ221J R 784 (A,100,60) (A,B,C) RS1/16SS221J R 591 (A,111,24) RS1/16SS472J R 785 (A,100,59) (A,B,C) RS1/16SS221J R 592 (A,108,28) RS1/16SS101J R 786 (A,100,58) (A,B,C) RS1/16SS221J R 593...
  • Page 54 Circuit Symbol and No. Part No. Circuit Symbol and No. Part No. C 190 (A,119,74) CKSSYB102K10 C 519 (A,127,65) CKSSYB104K10 C 191 (A,89,103) CCSRCH182J50 C 520 (A,124,65) CKSSYB104K10 C 192 (A,90,103) CCSRCH182J50 C 521 (A,124,66) CKSSYB104K10 C 196 (A,99,83) CKSSYB681K50 C 522 (A,119,67) CKSSYB104K10...
  • Page 55 Circuit Symbol and No. Part No. Circuit Symbol and No. Part No. C 901 (A,15,63) CEAT102M16 R 1811 (B,68,16) RS1/10SR102J R 1812 (B,47,12) RS1/10SR102J C 902 (A,14,79) CKSSYB103K10 R 1813 (B,49,13) RS1/10SR103J C 904 (A,16,72) 10 uF CCG1192 C 905 (B,24,66) CKSQYB475K6R3 R 1814...
  • Page 56 Circuit Symbol and No. Part No. Circuit Symbol and No. Part No. S 1880 (A,115,7) Push Switch CSG1155 C 1921 (A,89,25) CKSRYB105K10 S 1881 (A,120,7) Push Switch CSG1155 C 1922 (A,89,23) CKSRYB105K10 S 1882 (A,149,42) Push Switch CSG1155 C 1923 (B,99,22) CKSRYB105K10 CN1801...
  • Page 57 Circuit Symbol and No. Part No. Circuit Symbol and No. Part No. R 232 (A,19,21) RS1/16SS0R0J R 1910 (B,75,24) RS1/10SR473J R 235 (A,45,32) RS1/16SS103J R 1922 (A,89,21) RS1/10SR5102D R 236 (A,46,32) RS1/16SS103J R 1924 (A,107,25) RAB4C101J R 1925 (B,95,22) RAB4C101J R 237 (B,24,25) RS1/16SS221J...
  • Page 58 Circuit Symbol and No. Part No. C 299 (A,17,33) CKSSYB104K10 C 304 (A,60,35) CKSSYB472K25 C 305 (A,58,35) CKSSYB223K16 C 306 (A,68,20) CKSRYB105K10 C 710 (B,43,10) CKSSYB102K50 Unit Number : CWN4816(A,B,C) Unit Name : SD Unit MISCELLANEOUS CN1202 (A,33,43) VKN1302 CN1203 (A,23,19) Connector CKS6180 Miscellaneous Parts List...

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