Pioneer DEH-P4900IB - Radio / CD Service Manual Download Page 5

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DEH-P490IB/XN/UC

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

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.

• 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.)

Summary of Contents for DEH-P4900IB - Radio / CD

Page 1: ...E PTE LTD 253 Alexandra Road 04 01 Singapore 159936 PIONEER CORPORATION 2006 DEH P490IB XN UC CRT3846 CD RECEIVER DEH P490IB XN UC DEH P4900IB XN UC 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 ...

Page 2: ...4 CD MECHANISM MODULE GUIDE PAGE 26 4 PCB CONNECTION DIAGRAM 34 4 1 TUNER AMP UNIT 34 4 2 KEYBOARD UNIT 38 4 3 PANEL UNIT 39 4 4 CD CORE UNIT S10 5COMP2 40 5 ELECTRICAL PARTS LIST 42 6 ADJUSTMENT 50 6 1 CD ADJUSTMENT 50 6 2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT 52 6 3 ERROR MODE 54 6 4 IPOD TEST MODE 55 6 5 SYSTEM MICROCOMPUTER TEST PROGRAM 56 7 GENERAL INFORMATION 57 7 1 DIAGNOSIS 5...

Page 3: ...DEH P490IB XN UC 5 5 6 7 8 5 6 7 8 C D F A B E 1 SPECIFICATIONS DEH P490IB XN UC Backup current 5 mA or less ...

Page 4: ...DEH P490IB XN UC 6 1 2 3 4 1 2 3 4 C D F A B E DEH P4900IB XN UC Backup current 5 mA or less ...

Page 5: ...ponent 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 1 3 4 21 20 23 22 6 8 14 17 16 18 19 1...

Page 6: ...e Contrast table 2 8 Accessory Assy XEA7011 9 Polyethylene Bag CEG1160 10 Holder CND1249 11 Holder CND1250 12 Handle CND3707 13 Bush CNV3930 14 Screw Assy CEA5317 15 Polyethylene Bag CEG 127 16 Screw BPZ20P060FTB 17 Screw CBA1650 18 Screw CRZ50P090FTC 19 Screw TRZ50P080FTC 20 Unit Box See Contrast table 2 21 Contain Box See Contrast table 2 22 Protector XHP7016 23 Protector XHP7017 Mark No Descrip...

Page 7: ...66 73 60 65 59 77 79 80 58 58 58 58 78 76 71 72 70 56 62 63 69 67 74 68 4 4 4 1 1 82 64 36 86 29 28 27 22 23 34 26 85 33 84 83 83 32 19 3 19 17 87 35 20 18 25 24 11 10 12 2 2 15 2 2 61 8 9 7 5 37 38 38 38 38 42 44 49 47 48 46 45 40 43 55 50 53 54 41 39 52 88 30 31 18 13 90 89 A A B D 91 16 ...

Page 8: ...6 41 Spring XBH7001 42 Cover XNS7180 43 Lighting Conductor XNV7033 44 Connector CN1901 CKS5207 45 Button UP DOWN L R See Contrast table 2 46 Double side Tape CNM8673 47 OLED Unit MXS8233 48 Holder XNC7028 49 Holder XNV7034 50 Knob Assy XXA7472 51 52 Sub Grille Assy See Contrast table 2 53 Plate XNS7184 54 Grille Unit See Contrast table 2 55 Button Unit AUDIO FUNC XXA7491 56 Button CAC7752 57 Screw...

Page 9: ...wing Mark No Description DEH P490IB XN UC DEH P4900IB XN UC 16 Panel XNS7182 XNS7181 17 Tuner Amp Unit XWM7175 XWM7176 37 Detachable Assy XXA7476 XXA7475 45 Button UP DOWN L R XAC7150 XAC7147 52 Sub Grille Assy XXA7483 XXA7482 54 Grille Unit XXA7464 XXA7463 88 Button 1 6 SW EQ XAC7151 XAC7148 89 Holder Not used CNV7619 90 Screw Not used BMZ40P140FTC ...

Page 10: ...DEH P490IB XN UC 14 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 CNV7218 45 Gear CNV7219 46 Guide CNV7361 47 Gear CNV7595 48 Guide CNV7799 49 Arm CNV7805 50 Rack CNV8342 51 Roller CNV8343 52 Holder CNV8344 53 Arm CNV834...

Page 12: ...87 PID IPTX IPRX PVSENS 2 IC641 NJM2885DL1 33 VDD 3 3V REGULATOR 3 1 CDRST 4 18 SWVDD CONTR Q8 Q8 O ILB CONTRO PSENS S802 DETACH SENSE SW 39 DSENS EJTIN SL CE1 CE2 B UP 65 PPW Q701 Q703 Q705 Q702 VDD FMRF ANT adj RF adj FM ANT T51 CF52 RFGND OSCGND DGND AUDIOGND NC VCC VDD_3 3 3 3V 2 5V IC4 3 3V 2 5V IC2 2 5V CE2 ROM_VDD SL DI CK CE1 NC DO NC NC NC NC 7 6 13 5 10 9 8 11 14 18 19 20 21 1 3 2 12 15 ...

Page 13: ... SENSE Q822 Q821 20 OELPW Q852 Q851 IC851 NJM2360M 6 7 1 BZ621 BUZZER 13 13 9 12 12 7 ROT1 ROT0 35 ROT1 36 ROT0 VDD CN801 8 8 S1970 EJECT 9 9 DGND B UP 5 6 5 6 Q801 FLPILM 40 RL Q351 2 CN352 RL OEL B FL FL RL RL B UP GND ACC B REM ILM SL 4 4 3 91 CSENS AUDIO8V B UP SYS B REGULATOR 1 2 IC 901 NJM2388F84 4 6 DC DC CONVERTER B UP FILM FILM ILM B UP MUTE VCC FL FL RL RL E MUTE B REM EJECT 3 9 11 12 10...

Page 14: ...NER UNIT For resistors and capacitors in the circuit diagrams their resistance values or capacitance values are expressed in codes Ex Resistors Code Practical value 123 12k ohms 103 10k ohms Capacitors Code Practical value 103 0 01uF 101 10 100uF 10V Symbol indicates a resistor No differentiation is made between chip resistors and discrete resistors NOTE Symbol indicates a capacitor No differentia...

Page 15: ... L CH FRONT R CH REAR L CH REAR R CH A TUNER AMP UNIT 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 P4900IB P490IB DETACH SYSTEM CONTROLLER FM AM 21 1 dBs IPBUS 36 3 dBs CD 36 1 dBs AUX IPOD 35 3 dBs FM AM 4 9 dBs IPBUS 10 3 dBs CD 10 1 dBs AUX IPOD 9 3 dBs ...

Page 16: ... 600uH 3A 100 25 100 25 100 25 100 25 100 25 100 25 NC NC NC NC NC NC NC NC PPOWER SUB WOOFER R CH SUB WOOFER L CH FRONT L CH FRONT R CH REAR L CH REAR R CH A TUNER AMP UNIT P4900IB P490IB SYSTEM CONTROLLER FM AM 4 9 dBs IPBUS 10 3 dBs CD 10 1 dBs AUX IPOD 9 3 dBs ...

Page 17: ...A b 3 4 5 10A NC NC NC 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 DETACH FM AM 21 1 dBs IPBUS 36 3 dBs CD 36 1 dBs AUX IPOD 35 3 dBs ...

Page 18: ...DEH P490IB XN UC 22 1 2 3 4 1 2 3 4 C D F A B E A b A a A a A b 1 2 NC NC FM AM TUNER UNIT P4900IB P490IB IPBUS 2 2 dBs FM AM 400 Hz 30 24 dBs AUX IPOD 2 2 dBs ...

Page 19: ... or capacitance values are expressed in codes Ex Resistors Code Practical value 123 12k ohms 103 10k ohms Capacitors Code Practical value 103 0 01uF 101 10 100uF 10V 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 CD 0 dBs ...

Page 20: ...DEH P490IB XN UC 24 1 2 3 4 1 2 3 4 C D F A B E 3 3 KEYBOARD UNIT B DEH P490IB XN UC DEH P4900IB XN UC FUNC TION DISP LAY CLOCK D CN1951 ...

Page 21: ...DEH P490IB XN UC 25 5 6 7 8 5 6 7 8 C D F A B E B B KEYBOARD UNIT OLED UNIT ...

Page 22: ...OR 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 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 P490IB XN UC 27 5 6 7 8 5 6 7 8 C D F A B E C b C C CD CORE UNIT S10 5COMP2 A CN651 F SIGNAL LINE FOCUS SERVO LINE TRACKING SERVO LINE CARRIAGE SERVO LINE SPINDLE SERVO LINE T C S 6 ...

Page 24: ...DEH P490IB XN UC 28 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 P490IB XN UC 29 5 6 7 8 5 6 7 8 C D F A B E C a C b C b 2 3 A CN651 6 ...

Page 26: ...4 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 F F T T F F T T F F T T F F T T ...

Page 27: ...XC7134 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 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 Tra...

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 Jump...

Page 30: ...nector 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 CORD ASSY IP BUS AUX INPUT DETACH 1 3 4 2 5 6 ...

Page 31: ...DEH P490IB XN UC 35 5 6 7 8 5 6 7 8 C D F A B E A SIDE A FRONT D CN1950 ANTENNA FM AM TUNER UNIT iPOD PCL TESTIN REAR OUTPUT FRONT OUTPUT SUBWOOFER OUTPUT 1 1 7 8 3 5 2 2 4 6 ...

Page 32: ...DEH P490IB XN UC 36 1 2 3 4 1 2 3 4 C D F A B E A A TUNER AMP UNIT ...

Page 33: ...DEH P490IB XN UC 37 5 6 7 8 5 6 7 8 C D F A B E A SIDE B ...

Page 34: ...DEH P490IB XN UC 39 5 6 7 8 5 6 7 8 C D F A B E 4 3 PANEL UNIT D D PANEL UNIT D PANEL UNIT SIDE A SIDE B B CN1901 A CN801 EJECT ...

Page 35: ...DEH P490IB XN UC 40 1 2 3 4 1 2 3 4 C D F A B E 4 4 CD CORE UNIT S10 5COMP2 C SIDE A C CD CORE UNIT S10 5COMP2 PICKUP UNIT P10 5 SERVICE A CN651 M2 LOADING CARRIAGE MOTOR M1 SPINDLE MOTOR ...

Page 36: ...DEH P490IB XN UC 41 5 6 7 8 5 6 7 8 C D F A B E C SIDE B C CD CORE UNIT S10 5COMP2 ...

Page 37: ...08FUS1 IC 703 A 123 76 IC TC4066BFT IC 704 A 125 59 IC NJM2794V IC 851 B 38 18 IC NJM2360M IC 901 A 5 120 IC NJM2388F84 Q 101 B 42 105 Transistor 2SA1576A Q 102 A 33 87 Transistor DTC114EUA Q 201 A 36 50 Transistor 2SC4081 Q 202 A 43 46 Transistor RT3T22M Q 301 A 142 100 Transistor DTC124EUA Q 351 A 132 127 Transistor RT3C99M Q 352 B 137 126 Transistor RT3C99M Q 353 B 161 128 Transistor RT3C99M Q ...

Page 38: ...72 55 RS1 16S103J R 164 A 74 62 RS1 16S103J R 172 A 69 99 RS1 16S223J R 175 A 66 99 RS1 16S223J R 201 A 82 87 RS1 16S102J R 202 A 90 85 RS1 16S102J Circuit Symbol and No Part No R 203 A 86 83 RS1 16S102J R 212 A 41 48 RS1 16S391J R 213 B 51 90 RS1 16S0R0J R 214 B 66 81 RS1 16S0R0J R 215 B 88 82 RS1 16S0R0J R 216 B 90 85 RS1 16S0R0J R 217 A 79 88 RS1 16S0R0J R 218 B 79 94 RS1 16S0R0J R 301 A 145 84...

Page 39: ...J R 808 B 113 24 RS1 16S222J R 809 A 104 21 RD1 4PU222J R 810 B 129 26 RS1 16S102J R 811 B 112 33 RS1 16S102J R 812 B 107 32 RS1 16S102J Circuit Symbol and No Part No R 813 A 77 15 RS1 16S1R0J R 814 B 109 24 RS1 16S222J R 815 B 97 38 RS1 16S473J R 816 B 111 24 RS1 16S473J R 817 B 102 28 RS1 16S473J R 818 B 131 25 RS1 16S104J R 819 A 108 23 RS1 16S473J R 820 A 110 26 RS1 16S682J R 821 A 40 44 RD1 4...

Page 40: ...B152K50 C 653 B 87 30 CKSRYB152K50 C 659 A 48 41 CEJQ101M16 C 660 B 67 45 CKSRYB105K10 C 661 B 54 23 CKSRYB103K50 Circuit Symbol and No Part No C 662 A 48 25 CEJQ470M6R3 C 663 A 70 44 CEJQ4R7M35 C 666 B 55 67 CKSRYB105K10 C 701 A 131 73 CKSRYB105K10 C 702 A 130 87 CKSRYB104K16 C 703 A 115 124 CKSYB475K16 C 705 A 131 64 CKSRYB105K10 C 706 A 132 64 CKSRYB105K10 C 708 A 141 92 CKSRYB103K50 C 709 A 12...

Page 41: ...391J R 1951 B 30 24 RS1 16S331J R 1952 B 33 124 RS1 16S331J R 1953 B 36 131 RS1 16S331J R 1954 B 36 136 RS1 16S331J R 1955 B 27 154 RS1 16S391J R 1957 B 28 33 RS1 16S391J R 1958 B 32 33 RS1 16S391J Circuit Symbol and No Part No R 1960 B 36 43 RS1 16S391J R 1961 B 33 35 RS1 16S391J R 1962 B 36 33 RS1 16S181J R 1963 B 36 45 RS1 16S181J R 1965 B 27 157 RS1 16S0R0J R 1975 B 9 36 RS1 16S822J R 1976 B 1...

Page 42: ...55 S 1983 A 40 114 Push Switch CSG1155 S 1984 A 40 125 Push Switch CSG1155 S 1985 A 40 136 Push Switch CSG1155 S 1986 A 40 142 Push Switch CSG1155 S 1987 A 40 157 Push Switch CSG1155 Circuit Symbol and No Part No S 1988 A 21 45 Rotary Encoder YSD5009 RESISTORS R 1902 B 5 135 RS1 16S222J R 1903 B 6 135 RS1 16S222J R 1905 B 8 123 RS1 16S103J R 1906 B 21 63 RS1 16S101J R 1907 B 16 60 RS1 16S103J R 19...

Page 43: ... 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 RS1 16SS103J R 244 ...

Page 44: ...M8758 Unit Name Panel Unit MISCELLANEOUS D 1970 LED CL220PGC S 1970 Push Switch CSG1112 RESISTORS R 1970 RS1 16S101J R 1971 RS1 16S101J R 1972 RS1 16S0R0J CAPACITORS C 1970 CKSRYB104K16 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 45: ...re 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 th...

Page 46: ...e 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 47: ...de 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 oscil...

Page 48: ...DEH P490IB XN UC 53 5 6 7 8 5 6 7 8 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 49: ... 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 foun...

Page 50: ...een iPod and H U before you can enter the test mode This will disable the iPod operation from the iPod body To enable the iPod operation during the test mode from the iPod body make sure to disconnect the iPod body from H U 2 Press 4 and 6 together to reset and start the test mode 3 Press such as the SOURCE key to switch to the iPod source 4 Connect the iPod body to H U as need Cancellation of tes...

Page 51: ...witched 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 20 MHz 32 The clock signal should be 625 kHz 25 Hz If the clock signal is out of the range the X tal X601 should be replaced with new one ...

Page 52: ...e Assy Fig 1 1 Remove the Case CD Mechanism Module 1 1 1 1 Fig 2 Tuner Amp Unit Removing the Tuner Amp Unit Fig 2 Remove the screw 1 Remove the four screws Disconnect the connector and then remove the CD Mechanism Module 2 Remove the two screws and then remove the Grille Assy 2 2 1 2 2 2 3 3 3 3 Remove the three screws 2 Straighten the tabs at three locations indicated and then remove the Tuner Am...

Page 53: ...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 54: ...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 Gear...

Page 55: ... 3 2 1 1 B UP 2 GROUND 3 ACC 4 NC 5 ILM 6 B REM 7 NC 8 TEL MUTE 9 RL 10 FL 11 RL 12 FL 13 RR 14 FR 15 RR 16 FR E SHIELD GND 13 AUDIO GND 12 NC 11 IPOD GND 10 ACC POWER 9 D GND 8 AUDIO R 7 NC 6 DOCK RX 5 AUDIO L 4 ACC ID 3 DOCK TX 2 F W POWER 1 F W GND 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 IP BUS INPUT REAR OUTPUT SUBWOOFER OUTPUT FRONT OUTPUT WIRED REMOTE INPUT ANTENNA AUX iPod ...

Page 56: ...DEH P490IB XN UC 61 5 6 7 8 5 6 7 8 C D F A B E 7 2 IC NJM2794V OUT2 OUT1 IN1 IN1 IN2 IN2 Vref GND V 14 13 12 11 10 9 8 1 2 3 4 5 6 7 IN1 NC IN1 NC IN2 NC IN2 OUT1 NC GND VREF V NC OUT2 ...

Page 57: ...m 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 FI...

Page 58: ...3 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 amp_vcc ...

Page 59: ...sor mode change input Not used Not used Reset input Main clock output GND Main clock input Power supply input NMI input Not used VD power supply control Not used OEL power supply control Not used P BUS Reception enable input output P BUS Reset output BEEP sound output Not used P BUS Service request input IPBUS Input IPBUS Output OEL display microcomputer communication data output OEL display micro...

Page 60: ...elect output ACC sense input Backup sense input ROM correction clock output ROM correction data input output EVOL Strobe output EVOL Data output EVOL Clock output IPBUS Driver power supply control output IPBUS Slave ACC sense output Illumination sense Model select input 1 0 Not used System mute output Test program input iPod short circuit sense Not used Wired remote control AD input Not used Flap ...

Page 61: ...tal oscillator Power supply input Terminal for debug OELD controller data input Remote control input Reset for OELD controller DISP data input from sytem KEY data output to system OELD master clock output AD KEY input 2 AD reference voltage input VCC AD KEY input 1 0 General purpose port DIMMER output Command select for OELD controller Pin Functions PEG268A Format C C C C C C C PE5547A 144 37 72 1...

Page 62: ...ower 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 sel...

Page 63: ...udio 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 Output...

Page 64: ...nection 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 N...

Page 65: ...n operation After that proceed to each source operation SYSPW H Pin 1 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 CSENS Pin 91 ASENBO H Pin 80 2 V CSENS 3 V Last source returns CD loading functions are available Keys except...

Page 66: ...DEH P490IB XN UC 71 5 6 7 8 5 6 7 8 C D F A B E 8 OPERATIONS Press and hold to select bass boost setting menu ...

Page 67: ...DEH P490IB XN UC 72 1 2 3 4 1 2 3 4 C D F A B E CND1249 BPZ20P060FTB CND1250 ...

Page 68: ...DEH P490IB XN UC 73 5 6 7 8 5 6 7 8 C D F A B E Connection Diagram ...

Page 69: ...eaning 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 p Name Jig No Remarks Grease List Grease Grease GEM1024 GEM1045 CD Mechanism Module CD Mechanism Module Name Grease No Remarks ...

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