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Pioneer DEH-P4950MP, Service Manual

The Pioneer DEH-P4950MP offers exceptional audio quality and convenience in a car stereo system. Ensure a seamless user experience with the provided Operation Manual, available for free download from manualshive.com. This comprehensive manual equips users with all the necessary instructions to maximize the potential of this impressive product.

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DEH-P4950MP/XU/CN5

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[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.

1

  Use specified parts for repair.

Use genuine parts.  Be sure to use important parts for safety.

2

  Do not perform modifications without proper instructions.

Please follow the specified safety methods when modification(addition/change of parts)  is required due to interferences such as 
radio/TV interference and foreign noise.

3

  Make sure the soldering of repaired locations is properly performed.

When you solder while repairing, please be sure that there are no cold solder and other debris.
Soldering should be finished with the proper quantity. (Refer to the example)

4

  Make sure the screws are tightly fastened.

Please be sure that all screws are fastened, and that there are no loose screws.

5

  Make sure each connectors are correctly inserted.

Please be sure that all connectors are inserted, and that there are no imperfect insertion.

6

  Make sure the wiring cables are set to their original state.

Please replace the wiring and cables to the original state after repairs.
In addition, be sure that there are no pinched wires, etc.

7

  Make sure screws and soldering scraps do not remain inside the product.

Please check that neither solder debris nor screws remain inside the product.

8

  There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.

Damaged power cords may lead to fire accidents, so please be sure that there are no damages.
If you find a damaged power cord, please exchange it with a suitable one.

9

  There should be no spark traces or similar marks on the power plug.

When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure 
connections and suitable usage.   Please exchange the power cord if necessary.

0

  Safe environment should be secured during servicing.

When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries.  
Please pay attention to your surroundings and repair safely. 

2. Adjustments

To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification.
Adjustments should be performed in accordance with the procedures/instructions described in this manual.

4. Cleaning

For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper 
cleaning should be performed to restore their performances.

3. Lubricants, Glues, and Replacement parts

Use grease and adhesives that are equal to the specified substance. 
Make sure the proper amount is applied.

5. Shipping mode and Shipping screws

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.

Summary of Contents for DEH-P4950MP

Page 1: ...IACENTRE PTE LTD 253 Alexandra Road 04 01 Singapore 159936 PIONEER CORPORATION 2006 DEH P4950MP XU CN5 CRT3817 CD RECEIVER DEH P4950MP XU CN5 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 Se...

Page 2: ... other regulations and should keep the safety during servicing by following the safety instructions described in this manual 2 Before disassembling the unit be sure to turn off the power Unplugging and plugging the connectors during power on mode may damage the ICs inside the unit 3 To protect the pickup unit from electrostatic discharge during servicing take an appropriate treatment shorting sold...

Page 3: ...side the product Please check that neither solder debris nor screws remain inside the product 8 There should be no semi broken wires scratches melting etc on the coating of the power cord Damaged power cords may lead to fire accidents so please be sure that there are no damages If you find a damaged power cord please exchange it with a suitable one 9 There should be no spark traces or similar mark...

Page 4: ...20 3 4 CD MECHANISM MODULE GUIDE PAGE 22 4 PCB CONNECTION DIAGRAM 30 4 1 TUNER AMP UNIT 30 4 2 KEYBOARD UNIT 34 4 3 CD CORE UNIT S10 5COMP2 36 5 ELECTRICAL PARTS LIST 38 6 ADJUSTMENT 43 6 1 CD ADJUSTMENT 43 6 2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT 45 6 3 ERROR MODE 47 6 4 SYSTEM MICROCOMPUTER TEST PROGRAM 48 7 GENERAL INFORMATION 49 7 1 DIAGNOSIS 49 7 1 1 DISASSEMBLY 49 7 1 2 CONNEC...

Page 5: ...DEH P4950MP XU CN5 5 5 6 7 8 5 6 7 8 C D F A B E 1 SPECIFICATIONS ...

Page 6: ...st 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 In the case of no amount instructions apply as you think it appropriate 4 ...

Page 7: ...650 8 Polyethylene Bag CEG 127 9 Screw CRZ50P090FTC 10 Screw TRZ50P080FTC 11 Polyethylene Bag CEG 158 12 Handle CND3707 13 14 15 Bush CNV3930 16 Remote Control Assy CXC5719 17 Battery CEX1065 18 Carton YHG5110 19 Contain Box YHL5098 20 Protector YHP5008 21 Protector YHP5009 22 1 Owner s Manual YRB5029 22 2 Installation Manual YRB5030 22 3 Caution Card CRP1310 22 4 Warranty Card ARY7046 Mark No Des...

Page 8: ...2 2 EXTERIOR C B C A A B A B 67 67 19 25 23 24 66 29 12 13 3 15 31 4 4 4 7 14 60 54 59 58 57 61 62 18 8 6 30 20 16 22 21 28 26 27 63 65 2 1 9 1 1 1 19 19 5 42 52 51 37 36 40 38 36 35 34 43 45 41 39 49 48 53 44 33 33 33 33 32 17 47 46 50 68 10 11 55 56 ...

Page 9: ...in Jack CN351 XKB7001 29 Holder XNC7030 30 Holder YNC5043 31 Chassis Unit YXA5196 32 Detachable Assy YXA5207 33 Screw BPZ20P100FTB 34 Button Detach CAC9941 35 Button AUDIO FUNC CAC9942 36 Button L R CAC9946 37 Button UP CAC9947 38 Button DOWN CAC9948 39 Button EJECT CAC9949 40 Button EQ BAND CAC9950 41 Spring CBH2210 42 Cover CNS8758 43 Knob Unit SOURCE VOLUME CXC7054 44 Spring CBL1761 45 Button 1...

Page 10: ...DEH P4950MP XU CN5 10 1 2 3 4 1 2 3 4 C D F A B E 2 3 CD MECHANISM MODULE ...

Page 11: ... CND2584 30 Lever CND2585 31 Arm CND2586 32 Bracket CND2587 33 Arm CND2588 34 Lever CND2589 35 Holder CNV7201 36 Gear CNV7207 37 Gear CNV7208 38 Gear CNV7209 39 Gear CNV7210 40 Gear CNV7211 41 Gear CNV7212 42 Rack CNV7214 43 Arm CNV7216 44 Roller CNV8189 45 Gear CNV7219 46 Guide CNV7361 47 Gear CNV7595 48 Guide CNV8448 49 Arm CNV7805 50 Rack CNV8342 51 Roller CNV8343 52 Holder CNV8344 53 Arm CNV83...

Page 12: ...EFO 133 REFOUT 3 3 FOM FOM 12 FOM 4 4 TOM TOM 13 TOM 22 LOEJ LOEJ 5 52 50 X201 XTAL XTAL 16 93MHz VDSENS 11 VD IN2 _ IN4 _ IN4 _ IN1_L 2 5 4 ELEC SOU TUNL 1 SYSTEM CON IC 601 2 PEG28 CN401 1 2 CN701 CN101 TUNER AMP UNIT LOUT A CN621 T VDD_3 3V VCC8 VDD5 T C T ANTENNA C TUNPDI TUNPCK TUNPDO 13 9 RX RX2 TX ASENBO IPPW 29 30 40 27 52 IP_BUS Q101 Q102 B UP IN1 B14 7 IN1 B B 11 6 1 5 IC 101 HA12241FP 2...

Page 13: ...4 B UP SYS 8V REGULATOR IC 401 NJM2885DL1 33 CE2 TUNPCE2 B UP B UP 20 6 48 SYSPW 25 1 2 1 3 4 B REM RESET BSENS ASENS VCC8 6 SSENS VDD5 Q852 B UP Q841 SWVDD 7 18 ILMPW 1 DSENS Q842 SWVDD DSENS ILMB ROT1 ROT0 DPDT KYDT SSENSE DSENS ILM ROT1 ROT0 DPDT KYDT IC 1801 PD6538A LCD DRIVER KEY CONTROLLER KEY DATA LCD1801 3 CN1801 KEYBOARD UNIT 7 8 50 49 SI SO B 5 6 D1803 D1805 D1815 D1818 D1824 SWVDD SWVDD...

Page 14: ...A b A b A a A a Large size SCH diagram Guide page Detailed page Note When ordering service parts be sure to refer to EXPLODED VIEWS AND PARTS LIST or ELECTRICAL PARTS LIST 15 000MHz SYSTEM CONTROLLER FM AM TUNER UNIT 180 YSS5002 C CN701 B CN1801 CD 20 dB 19 4 dB FM 10 33 5 dB AM 15 30 0 dB AUX IN 20 dB 17 8 dB IP BUS 20 dB 17 8 dB ...

Page 15: ...safety factor of the part Therefore when replacing be sure to use parts of identical designation A TUNER AMP UNIT CEK1208 10A Symbol indicates a resistor No differentiation is made between chip resistors and discrete resistors NOTE Symbol indicates a capacitor No differentiation is made between chip capacitors and discrete capacitors INPUT FM 37 1 dB AM 33 6 dB CD 22 4 dB IP BUS 20 8 dB AUX IN 20 ...

Page 16: ...b 1 2 3A 3300 16 600µH A TUNER AMP UNIT CEK1208 10A INPUT FM 37 1 dB AM 33 6 dB CD 22 4 dB IP BUS 20 8 dB AUX IN 20 8 dB OUTPUT FM 16 0 dB AM 12 5 dB CD 8 3 dB IP BUS 8 7 dB AUX IN 8 7 dB SUB WOOFER R CH SUB WOOFER L CH FRONT L CH FRONT R CH REAR L CH REAR R CH ...

Page 17: ...tical value 103 0 01uF 101 10 100uF 10V 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 Symbol indicates a resistor No differentiation is made between chip resistors and discrete resistors NOTE Symbol indicates a capacitor No differentiation is made between chip capacitors and di...

Page 18: ...DEH P4950MP XU CN5 18 1 2 3 4 1 2 3 4 C D F A B E A b A a A a A b 1 2 15 000MHz SYSTEM CONTROLLER FM AM TUNER UNIT 180 YSS5002 C CN701 CD 20 dB 19 4 dB FM 10 33 5 dB AM 15 30 0 dB AUX IN 20 dB 17 8 dB ...

Page 19: ...DEH P4950MP XU CN5 19 5 6 7 8 5 6 7 8 C D F A B E A a A b A b A a 3 4 5 6 7 SYSTEM CONTROLLER B CN1801 AUX IN 20 dB 17 8 dB IP BUS 20 dB 17 8 dB ...

Page 20: ...DEH P4950MP XU CN5 20 1 2 3 4 1 2 3 4 C D F A B E 3 3 KEYBOARD UNIT B LCD DRIVER KEY CONTROLLER ...

Page 21: ...DEH P4950MP XU CN5 21 5 6 7 8 5 6 7 8 C D F A B E B D1805 1815 D1822 1824 SML 310PT A CN803 B KEYBOARD UNIT AUX1 INPUT ...

Page 22: ...M2 CXC4026 LOADING CARRIAGE MOTOR PICKUP UNIT P10 5 SERVICE 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 EEPROM CD DRIVER F F T T F F T T F F T T F F T T F T S C C S S C 3 2 1 9 0 4 8 7 5 ...

Page 23: ...DEH P4950MP XU CN5 23 5 6 7 8 5 6 7 8 C D F A B E C b C C CD CORE UNIT S10 5COMP2 A CN701 F SIGNAL LINE FOCUS SERVO LINE TRACKING SERVO LINE CARRIAGE SERVO LINE SPINDLE SERVO LINE T C S 6 ...

Page 24: ...DEH P4950MP XU CN5 24 1 2 3 4 1 2 3 4 C D F A B E C a C b C b 1 C CD CORE UNIT S10 5COMP2 F SIGNAL LINE FOCUS SERVO LINE TRACKING SERVO LINE CARRIAGE SERVO LINE SPINDLE SERVO LINE T C S ...

Page 25: ...DEH P4950MP XU CN5 25 5 6 7 8 5 6 7 8 C D F A B E C a C b C b 2 3 A CN701 6 ...

Page 26: ...1 2 3 4 C D F A B E C b C a C a C b 1 PICKUP UNIT P10 5 SERVICE 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 EEPROM F F T T F F T T F F T T F F T T ...

Page 27: ...7134 SPINDLE MOTOR M2 CXC4026 LOADING CARRIAGE MOTOR 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 EEPROM CD DRIVER F T S C C S S C 3 2 1 9 0 4 8 7 5 ...

Page 28: ... 500 mV div 500 mV div 500 mV div 500 mV div 20 ms div FE 0FIN TE 9TIN 1 V div 500 mV div 500 mV div 500 µs div RFAGC TE 9TIN 500 mV div 500 mV div 2 ms div TE RFAGC 500 mV div 500 mV div 200 ms div 0FIN FE Source On setup operation 12 cm CD DA Source On setup operation CD DA Play operation Spindle waveform during play operation Spindle waveform during play operation Wider Focus Search waveform Tr...

Page 29: ... 1 V div 1 V div 1 V div 500 µs div RFAGC 9TIN TE 0FIN 5 V div 5 V div 5 V div 5 V div 500 ms div 1DSCSNS 28SNS 312SNS 4LOEJ 5 V div 5 V div 5 V div 500 ms div 1DSCSNS 5CLCONT 4LOEJ 12 cm CD Eject operation Analog audio waveform 12 cm CD Eject operation 8 cm CD Eject operation Black dot 800 µm during play Search operation Outter to Inner 4 Tracks Jump waveform 10 Tracks Jump waveform 32 Tracks Jum...

Page 30: ...Capacitor Connector P C Board Chip Part SIDE B SIDE 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 dia gram 2 Viewpoint of PCB diagrams C CN701 IP BUS INPUT CORD ASSY ...

Page 31: ...DEH P4950MP XU CN5 31 5 6 7 8 5 6 7 8 C D F A B E A SIDE A B CN1801 FRONT FM AM TUNER UNIT ANTENNA REAR OUTPUT FRONT OUTPUT SUBWOOFER OUTPUT 1 2 3 5 4 6 7 8 ...

Page 32: ...DEH P4950MP XU CN5 32 1 2 3 4 1 2 3 4 C D F A B E A A TUNER AMP UNIT TEST 1 ...

Page 33: ...DEH P4950MP XU CN5 33 5 6 7 8 5 6 7 8 C D F A B E A SIDE B PCL FU 353 B 131 133 Fuse 3 A CEK1286 ...

Page 34: ...H P4950MP XU CN5 34 1 2 3 4 1 2 3 4 C D F A B E 4 2 KEYBOARD UNIT B SIDE B SIDE A B KEYBOARD UNIT B KEYBOARD UNIT A CN803 EJECT CLOCK SW 6 5 4 3 2 1 FUNCTION BAND AUDIO EQ DISPLAY SOURCE VOLUME AUX1 INPUT ...

Page 35: ...DEH P4950MP XU CN5 35 5 6 7 8 5 6 7 8 C D F A B E ...

Page 36: ...DEH P4950MP XU CN5 36 1 2 3 4 1 2 3 4 C D F A B E 4 3 CD CORE UNIT S10 5COMP2 C SIDE A C CD CORE UNIT S10 5COMP2 PICKUP UNIT P10 5 SERVICE A CN701 M2 LOADING CARRIAGE MOTOR M1 SPINDLE MOTOR ...

Page 37: ...DEH P4950MP XU CN5 37 5 6 7 8 5 6 7 8 C D F A B E C SIDE B C CD CORE UNIT S10 5COMP2 ...

Page 38: ...Q 451 B 122 112 Transistor DTC124EUA Q 453 B 121 118 Transistor UMD2N Q 701 B 24 52 Transistor UMD2N Q 702 A 6 67 Transistor 2SD2396 Q 841 B 119 24 Transistor 2SA1036K Q 842 B 122 32 Transistor DTC114EUA Q 851 B 36 13 Transistor 2SA1036K Q 852 B 30 10 Transistor DTC114EUA Q 911 A 6 102 Transistor 2SD2396 Q 912 B 18 71 Transistor UMD2N Q 931 B 60 88 Transistor UMX1N D 454 A 108 110 Diode 1SS133 D 7...

Page 39: ...98 84 RS1 16S103J R 604 B 120 61 RS1 16S681J R 605 B 153 61 RS1 16S681J R 606 B 114 48 RS1 16S103J R 607 B 144 58 RS1 16S681J Circuit Symbol and No Part No R 608 B 98 44 RS1 16S104J R 609 B 96 44 RS1 16S473J R 610 B 106 52 RS1 16S473J R 613 B 97 77 RS1 16S104J R 615 B 68 64 RS1 16S0R0J R 616 B 35 51 RS1 16S473J R 620 B 94 68 RS1 16S0R0J R 701 A 14 49 RD1 4PU271J R 703 B 47 53 RS1 16S472J R 704 B 4...

Page 40: ... 73 32 CEJQ100M16 C 609 B 144 51 CCSRCH470J50 C 701 B 23 47 CKSRYB473K25 C 703 A 30 29 CEJQ101M10 C 704 B 143 76 CKSRYB105K10 Circuit Symbol and No Part No C 705 B 125 77 CKSRYB105K10 C 708 A 38 76 CEJQ220M10 C 709 B 37 74 CKSRYB105K10 C 710 B 43 64 CKSRYB474K10 C 751 B 112 82 CKSRYB104K25 C 753 B 110 72 CKSRYB472K50 C 754 B 106 76 CKSRYB105K10 C 755 B 107 85 CKSRYB472K50 C 756 B 109 76 CKSRYB105K...

Page 41: ...03J R 222 B 35 32 RS1 16SS103J R 225 A 49 49 RS1 16SS103J Circuit Symbol and No Part No R 226 A 49 50 RS1 16SS393J R 227 B 45 51 RS1 16SS562J R 228 B 42 53 RS1 16SS122J R 229 B 44 53 RS1 16SS472J R 230 B 21 28 RS1 16SS0R0J R 232 B 43 51 RS1 16SS122J R 233 B 29 52 RS1 16SS103J R 234 B 30 61 RS1 16SS473J R 235 A 25 63 RS1 16SS473J R 239 B 26 48 RS1 16SS473J R 240 B 10 31 RS1 16SS473J R 241 B 9 32 RS...

Page 42: ...04K16 C 308 B 10 27 CKSRYB105K10 C 703 B 11 37 CCSSCH101J50 C 704 B 8 36 CKSSYB102K50 C 711 A 25 26 CKSSYB104K10 Miscellaneous Parts List Pickup Unit P10 5 Service CXX1942 M 1 Motor Unit SPINDLE CXC7134 M 2 Motor Unit LOADING CARRIAGE CXC4026 Circuit Symbol and No Part No ...

Page 43: ...are protections will not work Avoid applying any mechanical or electrical shock to the mechanism during adjustment The RFI and RFO signals with a wide frequency range are easy to oscillate When observing the signals insert a resistor of 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 t...

Page 44: ...se S Curve Rough Servo and RF AGC F T RF AGC 4 SPDL 1X 2X switching As for the double speed 2x audio output cannot be supported 5 Error Rate measurement ON ERR 30Counts Start BER display data 6 F Mode switching Tracking Close CRG TR Jump Switching After the Eject key is pressed keys other than the Eject key should not be pressed until disc ejection is complete When the key 2 or 3 is pressed during...

Page 45: ...ode load the disc and switch the 3 V regulator on 2 Using the and buttons move the PU unit to the innermost track 3 Press key 3 to close focus the display should read 91 Press key 2 to implement the tracking balance adjustment the display should now read 81 Press key 3 The display will change returning to 81 on the fourth press 4 As shown in the diagram above monitor the LPF outputs using the osci...

Page 46: ...DEH P4950MP XU CN5 46 1 2 3 4 1 2 3 4 C D F A B E Grating waveform 45 0 75 60 30 90 Ech Xch 20 mV div AC Fch Ych 20 mV div AC ...

Page 47: ...h or CRG move mechanism Communication error between microcomputer and SERVO LSI 11 Electricity Focus Servo NG Focusing not available Stains on rear side of disc or excessive vibrations on REWRITABLE 12 Electricity Spindle Lock NG Spindle not locked Sub code is strange not readable Subcode NG Failure on spindle stains or damages on disc or excessive vibrations A disc not containing CD R data is fou...

Page 48: ...witched ON the standby mode cancelled shift the TESTIN IC601 Pin 88 terminal to H The clock signal is output from the PCL terminal IC601 Pin 39 The frequency of the clock signal is 468 750 Hz that is one 32th of the fundamental frequency The clock signal should be 468 750 Hz 10 Hz 15 Hz If the clock signal is out of the range the X tal X601 should be replaced with new one ...

Page 49: ... Removing the Detachable Assy Fig 1 Removing the Tuner Amp Unit Fig 2 Detachable Assy Remove the four screws 1 Remove the Case Remove the screw Remove the three screws Straighten the tabs at four locations indicated and then remove the Tuner Amp Unit 2 1 1 2 1 1 3 1 3 3 3 2 Disconnect the connector and then remove the CD Mechanism Module Tuner Amp Unit 2 Release the two latchs and then remove the ...

Page 50: ... 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 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 1 Hold the Upper and Lower Frames 2 Do not hold the front...

Page 51: ... the SW in a clamped state so as not to damage it How to remove the Pickup Unit 1 Make the system in the carriage mechanism mode and have it clamped 2 Remove the CD Core Unit and remove the leads from the Inner Holder 3 Remove the Poly Washer Change Arm and Pickup Lock Arm 4 While releasing from the hook of the Inner Holder lift the end of the Feed Screw Caution When assembling move the Planet Gea...

Page 52: ...S 2 GND 3 GND 4 NC 5 BUS 6 GND 7 BUS L 8 ASENB 9 BUS R 10 BUS R 11 BUS L 11 10 9 8 7 6 5 4 3 2 1 IP BUS INPUT REAR OUTPUT SUBWOOFER OUTPUT FRONT OUTPUT ANTENNA 9 RL 10 FL 11 RL 12 FL 13 RR 14 FR 15 RR 16 FR 1 B UP 2 GND 3 ACC 4 NC 5 NC 6 B REM 7 NC 8 NC 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 ...

Page 53: ...STBY 5 OUT2 6 VCC 7 OUT1 8 P GND1 9 OUT1 10 SVR 11 IN1 12 IN2 13 S GND 14 IN4 15 IN3 16 AC GND 17 OUT3 18 P GND3 19 OUT3 20 VCC 21 OUT4 22 MUTE 23 OUT4 24 P GND4 SWITCH 25 Offset Detection Offset Detection Offset Detection Offset Detection Protector Over current limit sw_vcc stby Protector Short circuit Mute circuit amp_vcc Stand by Circuit Protector Over voltage sw_vcc Protector Thermal Reference...

Page 54: ...am Isolator Isolator Auto Zero Gain Adjuster Input Selector TRE BASS LOUDNESS Front_R Rear_R Front_L Rear_L Anti Alias Filter Primary Volume IN1_L IN2_L IN3_L IN4 _L IN4 _L IN4 _R IN4 _R IN3_R IN2_R IN1_R STB DATA CLK GND Vcc Vref MID Level Meter LM_out Secondary Volume Secondary Volume Pre SW_L Pre SW_R Anti Radiation Filter Supply Reference Anti Radiation Filter HPF Digital Block Phase inv LPF F...

Page 55: ...e input Processor mode change input Not used Reset input Main clock output GND Main clock input Power supply input NMI input Detach sense input Backup sense input ACC sense input CD mechanism RESET output VD power supply output P BUS Reset output P BUS Reception enable input output P BUS Service request input Not used IPBUS Input 2 Not used IPBUS Input IPBUS Output PBUS Output PBUS Input PBUS Cloc...

Page 56: ...7 68 69 85 86 87 88 89 91 92 93 94 95 96 97 98 99 100 TUNPCK TUNPDI NC TUNPDO NC TESTIN NC SSENS NC KEYAD MODEL AVSS SL VREF AVCC NC O I O I I I I I I Format C C TUNER Clock output PLL TUNER Data input PLL Not used TUNER Data output PLL Not used Test program input Not used Source key Not used Not used Model select input A D converter GND Connected to VSS Signal level input Field intensity A D conv...

Page 57: ...50 51 52 53 54 55 56 57 58 59 60 63 64 69 70 100 SEG38 0 COM3 0 V1 3 VCC NC TXD RXD MOD0 1 RESET X0 1 VSS REM NC KDT4 1 KST6 1 SEG69 39 O O O O O I I O O O C C C C N LCD segment output LCD common output LCD drive power supply Power supply Not used Communication data output Communication data input Not used Reset Crystal oscillator connection pin Not used Remote control input Not used Key data 4 1 ...

Page 58: ...Power supply for A D converter Ground for A D converter Flash writing control terminal Internal microcomputer reset terminal Pull down Not used Chip check test program start up input Not used P BUS Serial data input P BUS Serial data output P BUS Serial clock input output Tx for flash rewriting Rx for flash rewriting P BUS Reception enable input output P BUS Service request input Not used Flash se...

Page 59: ...audio serial I F clock output 3 wire audio serial I F data output Servo monitor input output 0 2 Servo monitor input output 3 Ext MCK IN DRAM CLOCK DRAM CS DRAM CKE output Output of DRAM RAS DRAM Lower CAS LDQM output DRAM Upper CAS UDQM output Output of DRAM WE DRAM OE CAS output Input output of DRAM data 0 15 Ground for I O terminal Power supply for I O terminal Output of DRAM address 0 11 Outpu...

Page 60: ... 9 MUTE Mute control pin 10 POWVCC1 Power supply pin for CH1 CH2 and CH3 at Power stage 11 VO1 Driver CH1 Negative output 12 VO1 Driver CH2 Positive output 13 VO2 Driver CH2 Negative output 14 VO2 Driver CH2 Positive output 15 VO3 Driver CH2 Positive output 16 VO3 Driver CH2 Negative output 17 VO4 Driver CH4 Positive output 18 VO4 Driver CH4 Negative output 19 POWVCC2 Power supply pin for CH4 at P...

Page 61: ...nnection Not used 12 OSCGND osc ground Ground of oscillator block 13 ROM_VDD power supply Power supply for EEPROM pin 13 is connected with a power supply of micro computer 14 DO O data out Data output 15 DGND digital ground Ground of digital block 16 NC non connection Not used 17 VDD_3 3 power supply The power supply for digital block 3 3 V 0 2 V 18 NC non connection Not used 19 NC non connection ...

Page 62: ...DEH P4950MP XU CN5 62 1 2 3 4 1 2 3 4 C D F A B E 7 2 2 DISPLAY LCD YAW5080 SEGMENT COMMON ...

Page 63: ... 20 dsens Pin 18 SWVDD H Pin 7 ASENBO H Pin 40 Source keys operative Completes power on operation After that proceed to each source operation SYSPW H Pin 48 Starts communication with Grille microcomputer Source ON 300 ms 300 ms In case of the above signal the communication with Grille microcomputer may fail If the time interval is not 300 msec the oscillator may be defective ...

Page 64: ...DEH P4950MP XU CN5 64 1 2 3 4 1 2 3 4 C D F A B E 8 OPERATIONS ...

Page 65: ...DEH P4950MP XU CN5 65 5 6 7 8 5 6 7 8 C D F A B E ...

Page 66: ...DEH P4950MP XU CN5 66 1 2 3 4 1 2 3 4 C D F A B E CXX2204 ...

Page 67: ...DEH P4950MP XU CN5 67 5 6 7 8 5 6 7 8 C D F A B E Connection Diagram ...

Page 68: ...cleaning tools Portions to be cleaned Cleaning tools g CD pickup lenses Cleaning liquid GEM1004 Cleaning paper GED 008 g p p Jigs List Test Disc L P F TCD 782 Checking the grating g g g Checking the grating g g g Two pieces Name Jig No Remarks Grease List Grease Grease GEM1024 GEM1045 CD Mechanism Module CD Mechanism Module Name Grease No Remarks ...

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