Service manual

ManualsBrandsMagnavox ManualsCRT TV20MT1331-37R

ORDER NO.

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

DEH-P6950IB/XN/ES

CRT3853

CD RECEIVER

DEH-P6950IB

/XN/ES

DEH-P6950IB

/XN/ES1

This service manual should be used together with the following manual(s):

Model No. Order No. Mech.Module Remarks

CX-3195 CRT3815 S10.5COMP2 CD Mech. Module : Circuit Descriptions, Mech. Descriptions, Disassembly

For details, refer to "Important Check Points for Good Servicing".

K-ZZU. DEC. 2006 Printed in Japan

Summary of content (70 pages)

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ORDER NO. CRT3853 DEH-P6950IB/XN/ES CD RECEIVER DEH-P6950IB /XN/ES DEH-P6950IB /XN/ES1 This service manual should be used together with the following manual(s): Model No. CX-3195 Order No. CRT3815 Mech.Module S10.5COMP2 Remarks CD Mech. Module : Circuit Descriptions, Mech. Descriptions, Disassembly For details, refer to "Important Check Points for Good Servicing". PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS (USA) INC. P.O.
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1 2 3 4 SAFETY INFORMATION CAUTION A 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.
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5 6 7 8 [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. A 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. 1 Use specified parts for repair. Use genuine parts.
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1 2 3 4 CONTENTS SAFETY INFORMATION ..................................................................................................................................... 2 1. SPECIFICATIONS ............................................................................................................................................ 5 2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................ 6 2.1 PACKING ...................
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6 7 8 1. SPECIFICATIONS A Backup current ....................
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1 2 3 4 2. EXPLODED VIEWS AND PARTS LIST NOTES : • 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. • 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.
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5 6 7 8 (1) PACKING SECTION PARTS LIST Mark No. * * * Description Part No. Mark No. Description Part No.
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1 2 3 4 2.
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5 6 7 8 EXTERIOR SECTION PARTS LIST Mark No. > Description Mark No. Part No. 1 2 3 4 5 Screw Screw Screw Screw Earth Plate BMZ30P040FTB BSZ26P060FTC BSZ30P060FTC BSZ30P200FTC CNC8915 6 7 8 9 10 Holder Cushion Remote Control Unit Cover CD Mechanism Module(S10.
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1 2 3 4 3 4 2.
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5 6 7 8 CD MECHANISM MODULE SECTION PARTS LIST Mark No. Description Mark No. Part No. 1 2 3 4 5 CD Core Unit(S10.
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1 2 3 4 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM A TUNER AMP UNIT A OSC ANTENNA CN401 AM ANT 1 1 TUNPDI NC NC NC NC 18 19 20 21 DO 14 NC TUNPCK DI CK SL 5V 11 CE1 10 9 8 IC3 EEPROM 5.0V B CE1 SL TUNPDO 5 ROM_VDD 13 CE2 NC 7 6 FM/AM TUNER UNIT IC5 3.3V ← CE2 VDD LPF FMRF ATT 2 IC2 2.5V IC1 3.3V FM ANT 3 ATT FMRF Lch MIXER, IF AMP 23 DET, FM MPX, RF adj ANT adj T51 DGND AUDIOGND NC 15 22 16 VDD_3.
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5 6 7 8 A RESET 1 IC602 S-80835CNMC-B8U 2 VDD CN352 MUTE RL RL 2 Q351 10 RESET CE2 TUNPDO TUNPCK FL FL XIN XOUT 95 SL 11 B X601 20.00MHz Q352 VDD REGULATOR SYSTEM CONTROLLER IC 601(1/2) PEG274A VDD Q912 67 DALMON BACKUP SENSE BSENS ASENS B.UP ACC EMUTE TELIN SML ILM 8 CDL 9 IN2_L 7 IN4+_L 6 IN4-_L 10 IN1_L BUSL+ BUSLSEL-L Front_L IC201 PML016B Rear_L 13 58 ILM 8 TEL 2 GND 10 FL- 12 FL+ 9 RL- 11 RL+ 6 B.
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1 2 3 4 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". A-a A A-a Large size SCH diagram A-b FM,AM(22.5 kHz,30 %) : -24 dBs A-a A-a A-b Guide page Detailed page A-b FM/AM TUNER UNIT IPBUS:2.2 dBs B C AUX1/IPOD : 2.2 dBs D EJECT B CN1801 E C CN701 D PANEL UNIT CD:0.6 dBs NOTE : Symbol indicates a resistor.
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5 6 7 8 A A-b A TUNER AMP UNIT SUB WOOFER L CH SUB WOOFER R CH B FRONT L CH > FRONT R CH REAR L CH 3A FM,AM:-0.9 dBs IPBUS:14.3 dBs CD:14.7 dBs AUX1/IPOD:13.3 dBs REAR R CH C 600uH SYSTEM CONTROLLER > CEK1208 10A D FM,AM:21.1 dBs IPBUS:36.3 dBs CD:36.7 dBs AUX1/IPOD:35.
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E A 16 1 A-b 1 2 600uH 3A > TUNER AMP UNIT B SYSTEM CONTROLLER FM,AM:-0.9 dBs IPBUS:14.3 dBs CD:14.7 dBs AUX1/IPOD:13.
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A-a A-b FM,AM:21.1 dBs IPBUS:36.3 dBs CD:36.7 dBs AUX1/IPOD:35.
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F FM/AM TUNER UNIT E 18 AUX1/IPOD : 2.2 dBs IPBUS:2.2 dBs A FM,AM(22.
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C 5 6 7 A-a A-b 7 8 DEH-P6950IB/XN/ES 8 *Capacitors Code Practical value 103 0.01uF 101/10 100uF/10V 7 Ex. *Resistors Code Practical value 123 12k ohms 103 10k ohms 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. 6 Symbol indicates a resistor. No differentiation is made between chip resistors and discrete resistors. Symbol indicates a capacitor.
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1 2 3 4 3.
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5 6 7 B 8 A KEYBOARD UNIT B C D PD8168A E OEL UNIT F B DEH-P6950IB/XN/ES 5 6 7 8 21
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1 2 3 4 3.4 CD MECHANISM MODULE(GUIDE PAGE) A C-a PICKUP UNIT(P10.5)(SERVICE) B F % T F T F F T T F F F F T T T T C # @ 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.
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5 6 7 8 A C-b C CD CORE UNIT(S10.
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! C-a C-b C B C C-b 24 1 2 S C T F SPINDLE SERVO LINE CARRIAGE SERVO LINE TRACKING SERVO LINE FOCUS SERVO LINE SIGNAL LINE CD CORE UNIT(S10.
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7 8 A 6 A 6 CN651 5 ^ & B C-a C-b C D E F 2 C-b 3 DEH-P6950IB/XN/ES 5 6 7 8 25
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F 26 1 2 3 T F T # T @ T F T F T F B F % 2 F T F T F C-b 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 PICKUP UNIT(P10.
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5 M2 CXC4026 LOADING/CARRIAGE MOTOR M1 CXC7134 SPINDLE MOTOR 6 C C S S F T C-a c-b 0 9 CD DRIVER S C $ 8 7 5 4 6 1 2 3 The underlined indicates the switch position. SWITCHES: CD CORE UNIT(S10.5COMP2) S901:HOME SWITCH..........ON-OFF S903:DSCSNS SWITCH......ON-OFF S904:12EJ SWITCH.............ON-OFF S905:8EJ SWITCH...............
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1 2 - Waveforms 3 4 Note : 1. The encircled numbers denote measuring points in the circuit diagram. 2. Reference voltage REFO1(1.65 V) A 1DSCSNS 28SNS 312SNS 4LOEJ B 500 ms/div 1DSCSNS 28SNS 312SNS 4LOEJ 5 V/div 5 V/div 5 V/div 5 V/div 8 cm CD Loading operation Ref.: GND Ref.: GND Ref.
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5 6 500 μs/div 1 V/div 500 mV/div 500 mV/div %RFAGC @TE 9TIN %RFAGC @TE 9TIN 7 500 μs/div 1 V/div 500 mV/div 500 mV/div 8 %RFAGC @TE 9TIN 2 ms/div 1 V/div 500 mV/div 500 mV/div 4 Tracks Jump waveform 10 Tracks Jump waveform 32 Tracks Jump waveform Ref.: REFO Ref.: REFO Ref.
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1 2 3 4 4. PCB CONNECTION DIAGRAM 4.1 TUNER AMP UNIT A NOTE FOR PCB DIAGRAMS 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 diagram. 2.Viewpoint of PCB diagrams A i Po TUNER AMP UNIT AUX JACK WIRED REMOTE INPUT CORD ASSY IP-BUS INPUT Capacitor Connector B SIDE A Chip Part P.C.
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5 6 7 8 A i Pod CONNECTOR SIDE A REAR OUTPUT FRONT OUTPUT SUBWOOFER OUTPUT Y 8 ANTENNA JACK 7 6 4 2 5 3 1 B CN352 2 1 FM/AM TUNER UNIT C D TESTIN PCL E D C CN1950 CN701 F FRONT A DEH-P6950IB/XN/ES 5 6 7 8 31
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1 2 3 4 3 4 A A TUNER AMP UNIT >FU 352 (B,128,136) Fuse 3 A CEK1286 B C D E F A 32 DEH-P6950IB/XN/ES 1 2
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5 6 7 8 A SIDE B B C D E F A DEH-P6950IB/XN/ES 5 6 7 8 33
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1 2 3 4 4.
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5 6 7 8 4.
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1 2 3 4 4.4 CD CORE UNIT(S10.5COMP2) C CD CORE UNIT(S10.5COMP2) SIDE A A A CN651 PICKUP UNIT(P10.
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5 C 6 7 8 CD CORE UNIT(S10.
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1 2 3 4 5. ELECTRICAL PARTS LIST A B 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.
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5 Circuit Symbol and No. 6 7 Part No. Circuit Symbol and No.
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1 Circuit Symbol and No. A B C D E F 2 3 Part No. 4 Circuit Symbol and No. Part No.
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5 Circuit Symbol and No. 6 7 Part No. 8 Circuit Symbol and No. Part No.
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1 Circuit Symbol and No. A 2 3 Part No. Circuit Symbol and No. L 1882 TH1881 (A,28,115) Inductor (A,26,138) Thermistor CTF1617 CCX1037 X S S S S 1841 1803 1804 1805 1806 (B,22,55) Ceramic Resonator 16.
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5 Circuit Symbol and No. 6 7 Part No.
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1 2 3 4 6. ADJUSTMENT 6.1 CD ADJUSTMENT A 1) Cautions on adjustments • In this product the single voltage (3.3 V) is used for the regulator. The reference voltage is the REFO1 (1.65 V) instead of the GND. If you should mistakenly short the REFO1 with the GND during adjustment, accurate voltage will not be obtained, and the servo’s misoperation will apply excessive shock to the pickup. To avoid such problems: a. Do not mix up the REFO1 with the GND when connecting the (-) probe of measuring instruments.
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5 6 7 8 - Flow Chart [Key] [LIST] + [CLOCK] + Reset or [LIST] + [CLOCK] + BU + ACC Contents Test Mode In A Display Head Unit Remote Control [CD] or [SOURCE] Source On TRK MIN SEC [BAND] [3] Power On (T.Offset is adjusted) TRK MIN SEC 00 [BAND] MIN SEC [BAND] MIN SEC [BAND] Power Off TRK MIN 91 91 [1] T.
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1 2 3 4 6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT A • 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. Changing the PU unit is thus best considered as a last resort. However, if the PU unit must be changed, the grating should be checked using the procedure below.
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5 6 7 8 Ech → Xch 20 mV/div, AC Fch → Ych 20 mV/div, AC Grating waveform A 0° 30° B 45° 60° C D 75° 90° E F DEH-P6950IB/XN/ES 5 6 7 8 47
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1 2 3 4 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.
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5 6 7 8 6.4 IPOD TEST MODE [Built-in iPod Test Mode Specification (Test mode for service representatives)] A [Purpose of this test mode] This is a specialized mode that aims to check malfunction condition of H/U and measure the product performance.
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1 2 3 4 6.5 SYSTEM MICROCOMPUTER TEST PROGRAM A - 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 86) terminal to H. The clock signal is output from the PCL terminal IC601(Pin 41). The frequency of the clock signal is 625 kHz that is one 32th of the fundamental frequency. The clock signal should be 625 kHz(±25 Hz).
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5 6 7 8 7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 DISASSEMBLY A - Removing the Case (not shown) 1. Remove the Case. CD Mechanism Module - Removing the CD Mechanism Module (Fig.1) 1 Remove the four screws. B 1 Disconnect the connector and then remove the CD Mechanism Module. 1 - Removing the Grille Assy (Fig.1) 2 Remove the two screws and then remove the Grille Assy. 1 1 2 C 2 Fig.1 Grille Assy - Removing the Tuner Amp Unit (Fig.2) 1 Remove the screw. 2 Remove the three screws.
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1 2 3 4 - 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. A B Do not squeeze this area. - Removing the Upper and Lower Frames 1. With a disc inserted and clamped in the mechanism, remove the two Springs (A), the six Springs (B), and the four Screws. 2. Turn the Upper Frame using the part "a" as a pivot, and remove the Upper Frame. 3.
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5 6 7 8 - 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. A Screw B CD Core Unit Solder - How to remove the Pickup Unit 1. Make the system in the carriage mechanism mode, and have it clamped. 2.
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REAR OUTPUT E 54 1 2 SUBWOOFER OUTPUT 3 1 2 3 4 5 6 7 8 B. UP GROUND ACC NC ILM B. REM NC TEL MUTE 9 10 11 12 13 14 15 16 16 14 12 10 8 6 4 15 13 11 9 7 5 3 C SHIELD GND AUDIO GND NC IPOD GND ACC POWER D GND AUDIO R NC DOCK RX AUDIO L ACC ID DOCK TX F/W POWER F/W GND D FRONT OUTPUT RLFLRL+ FL+ RRFRRR+ FR+ 2 1 B 1. BUS+ 2. GND 3. GND 4. NC 5. BUS6. GND 7. BUS L+ 8. ASENB 9. BUS R+ 10. BUS R11.
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5 6 7 8 7.
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GND & Reference Vcc Vref Block Digital LPF MIC Amp Supply CLK DATA STB MUTE Noise_DET_out DC_filter MIC_in Vp mute Secondary Volume Anti-Rad. Filter Anti-Alias Filter Primary Volume Spectrum Analyzer & Level Meter Tout_FL SVin_FL SA_clk Pref Soft step Blocks ( S.S. EQ2 M.S.S. ) HPF Secondary Volume mute Secondary Volume mute LPF EQ7 BASS HPF mute mute Anti-Rad. Filter ASL Secondary Volume LOUD Isolator IN4+_R IN4-_R Secondary Volume Anti-Rad. Filter Phase inv.
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5 6 7 8 DEH-P6950IB/XN/ES IN/OUT1 1 14 VDD OUT/IN1 2 13 CONT1 OUT/IN2 3 12 CONT4 IN/OUT2 4 11 IN/OUT4 CONT2 5 10 OUT/IN4 CONT3 6 9 OUT/IN3 VSS 7 8 IN/OUT3 57 F E sw_vcc TC4066BFT Protector; Over voltage 1 TAB Reference amp_vcc 3 Offset Detection 4 5 24 25 23 22 20 21 19 18 17 16 15 14 IN4 12 13 S-GND 11 IN1 10 SVR 9 OUT1+ 8 P-GND1 7 OUT1- 6 VCC Protector; Thermal Offset Detection Protector; Short circuit Offset Detection -+ IN3 +- AC-GND Offset Dete
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1 2 3 4 - Pin Functions (PEG274A) Pin No.
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5 Pin No.
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1 2 3 4 - Pin Functions (PE5547A) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32-36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 A B C D E Pin Name ROMDATA ROMCK ROMCS NC LOEJ DSCSNS *sns !@sns home TEMP VDSENS adena ADC.VDD ADC.GND FLMD0 reset PULLDOWN NC testin NC BSI BSO bsck FTxD FRxD BRXEN bsrq NC fmode FLRQ ROM NC MCKRQ LRCKOK puen CD3VON CONT VDCONT CLCONT CDMUTE TEST brst REGS C.VDD C.GND XTAL X.GND xtal X.VDD DA.
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5 Pin No. 60 61 62 63 64 65 66 67-69 70 71 72 73 74 75 76 77 78 79-94 95 96 97-108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123,124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 Pin Name DA.VDD D.GND D.VDD REG16 LRCK SCKO DOUT SVMON0-2 SVMON3 C33M (rcs) (CKE) ras cas)(LDQM) cas!(UDQM) we oe(cas) RDB0-15 IO.GND IO.VDD RA0-11 FD TD SD MD EFM ASY ATEST A.VDD A.GND RFI AGCO C3T AGCI RFO EQ2,1 RF2RFA.GND A.VDD A B F E REFOUT FEFEO ADCIN TETEO TE2 TEC LD PD AD.
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1 2 3 4 - Pin Functions (PEG272A) Pin No.
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5 Pin No.
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1 2 3 4 - FM/AM Tuner Unit A NC NC NC 18 19 20 21 NC DO NC DI CK SL 14 ← OSC 1 11 IC 5 5 V 3.3 V IC 3 EEPROM 5.0 V AM ANT 10 9 8 CE1 5 ROM_VDD 13 CE2 NC 7 6 LPF FMRF ATT Rch IC 1 3.3 V FM ANT ATT FMRF ANT adj Lch MIXER, IF AMP RF adj No.
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5 6 7 8 7.3 OPERATIONAL FLOW CHART A Power ON Vcc=5 V Pin 14 bsens Pin 73 B bsens=L asens Pin 72 asens=L dsens Pin 39 C dsens=L ASENBO←H Pin 80 CSENS Pin 91 - 2 V < CSENS < 3 V Last source returns. CD loading functions are available. Keys except for EJECT key are not available. 2 V < CSENS < 3 V D Starts communication with Grille microcomputer. 300 ms SWVDD←H Pin 38 Source keys operative 300 ms E In case of the above signal, the communication with Grille microcomputer may fail.
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1 2 3 4 3 4 8.
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5 6 7 8 A B C D E F DEH-P6950IB/XN/ES 5 6 7 8 67
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1 2 3 4 3 4 A CXX1645 CXX1644 B C D XXX7020 E F 68 DEH-P6950IB/XN/ES 1 2
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5 6 7 8 - Connection Diagram A B C D E F DEH-P6950IB/XN/ES 5 6 7 8 69
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1 2 3 4 - Jigs List Name Test Disc L.P.F. A Jig No. TCD-782 Remarks Checking g the g grating g Checking g the g grating g ((Two pieces) p ) Grease No.