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CDX-P1250

1. SAFETY INFORMATION

1.1 CDX-P1250/X1N/UC

CAUTION

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.
If you are not qualified to perform the repair of this product properly and safely; you should not risk trying to do so
and refer the repair to a qualified service technician.

WARNING

This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of

California to cause cancer, birth defects or other reproductive harm.

Health & Safety Code Section 25249.6 - Proposition 65

1.2 CDX-P1250/X1N/EW

1. Safety Precautions for those who Service this Unit.
• Follow the adjustment steps (see pages 29 through 34)in the service manual when servicing this unit. When check-

ing or adjusting the emitting power of the laser diode exercise caution in order to get safe, reliable results.

Caution:

1. During repair or tests, minimum distance of 13cm from the focus lens must be kept.
2. During repair or tests, do not view laser beam for 10 seconds or longer.

2. A “CLASS 1 LASER PRODUCT” label is affixed to the

rear of the player.

3. The triangular label is attached to the mechanism

unit frame.

4. Specifications of Laser Diode

Specifications of laser radiation fields to which human access is possible during service.
Wavelength

=

800 nanometers

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Содержание CDX-P1250

Страница 1: ...O CRT2318 MULTI COMPACT DISC PLAYER CDX P1250 X1N UC Service Manual CONTENTS 1 SAFETY INFORMATION 3 2 EXPLODED VIEWS AND PARTS LIST 4 3 SCHEMATIC DIAGRAM 12 4 PCB CONNECTION DIAGRAM 20 5 ELECTRICAL PARTS LIST 26 6 ADJUSTMENT 29 7 GENERAL INFORMATION 35 7 1 IC 35 7 2 DIAGNOSIS 40 7 2 1 DISASSEMBLY 40 7 2 2 TEST MODE 42 7 3 BLOCK DIAGRAM 48 8 OPERATIONS AND SPECIFICATIONS 50 See the separate manual ...

Страница 2: ...since these screws protects the mechanism during transport be sure to affix it when it is transported for repair etc Transport screw Attach to the original position before transporting the set Seal After removing the transport screw cover the hole with the supplied seal Transportation of multi CD Player A transport screw has been attached to the set in order to protect it during transportation Aft...

Страница 3: ...arts contain chemicals which are known to the state of California to cause cancer birth defects or other reproductive harm Health Safety Code Section 25249 6 Proposition 65 1 2 CDX P1250 X1N EW 1 Safety Precautions for those who Service this Unit Follow the adjustment steps see pages 29 through 34 in the service manual when servicing this unit When check ing or adjusting the emitting power of the ...

Страница 4: ...4 CDX P1250 2 EXPLODED VIEWS AND PARTS LIST 2 1 PACKING 12 11 11 12 8 9 15 19 10 7 13 5 4 3 1 6 2 14 21 20 16 ...

Страница 5: ...RD2895 CRD2896 CRD2898 14 2 Owner s Manual Not used CRD2897 CRB1533 14 3 Warranty Card Not used CRY1087 Not used 14 4 Caution Card CRP1201 CRP1203 CRP1202 14 5 Caution Card CRP1205 CRP1205 CRP1205 15 Magazine Assy CXB4028 CXB4028 CXB4028 16 Angle Assy CXB3589 CXB3590 CXB3590 17 18 19 Cord CDE5831 CDE5830 CDE5831 20 Caution Card CRP1090 CRP1090 CRP1090 21 Caution Card CRP1196 CRP1196 CRP1196 Owner ...

Страница 6: ...6 CDX P1250 2 2 EXTERIOR ...

Страница 7: ... 2 33 CD Mechanism Module See Contrast table 2 34 Screw IMS20P035FZK 35 Screw IMS26P040FMC 36 Sheet See Contrast table 2 37 Transistor Q910 2SD2396 38 Seal See Contrast table 2 39 Caution Card CRP1196 1 EXTERIOR SECTION PARTS LIST Mark No Description Part No Mark No Description Part No Part No Mark No Symbol and Description CDX P1250 X1N UC CDX P1250 X1N EW CDX P1250 X1N ES 8 Cord CDE5831 CDE5830 ...

Страница 8: ...8 CDX P1250 2 3 CD MECHANISM MODULE ...

Страница 9: ... 45 Bracket CNC8355 46 Plate CNC8375 47 Cover CNC8434 48 Sheet CNM6009 49 Spacer CNM6146 50 Sheet CNM6296 51 PCB CNP5227 52 PCB CNP5228 53 Ball CNR1189 54 Gear CNR1531 55 Belt CNT1086 56 Gear CNV5472 57 Gear CNV5473 58 Rail CNV5474 59 Lever CNV5475 60 Gear CNV5477 61 Arm CNV5478 62 Holder CNV5480 63 Guide CNV5481 64 Guide CNV5482 65 Holder CNV5483 66 Holder CNV5484 67 Clamper CNV5485 68 Gear CNV54...

Страница 10: ...o transistor Q851 PT4800 102 Spring Switch S851 S853 CSN1051 103 LED D851 CN504 2 104 Spring Switch S852 CSN1052 Mark No Description Part No 2 CONTRAST TABLE CDX P1250 X1N UC CDX P1250 X1N EW and CDX P1250 X1N ES are constructed the same except for the following Part No Mark No Symbol and Description CDX P1250 X1N UC CDX P1250 X1N EW CDX P1250 X1N ES 2 CD Core Unit C8 CWX2262 CWX2263 CWX2262 ...

Страница 11: ...11 CDX P1250 2 4 MAGAZINE ASSY 1 Magazine Assy CXB4028 2 Tray CNV5341 3 Label CRW1396 MAGAZINE ASSY SECTION PARTS LIST Mark No Description Part No ...

Страница 12: ...rts be sure to refer to EXPLODED VIEWS AND PARTS LIST or ELECTRICAL PARTS LIST M853 CXB3005 M852 CXB3006 M851 CXB3003 M854 CXB3004 PICKUP UNIT SERVICE CXX1285 CSN1051 CSN1051 CSN1052 CN504 2 PT4800 10k 680 B C MECHANISM PCB D SWITCH PCB E MOTOR PCB MOT 4CH SERVO DRIV RF A DSP 1 12 6 8 13 21 1 4 CN801 CN802 C D E A1 2 ...

Страница 13: ...13 CDX P1250 5 6 7 8 5 6 7 8 D C B A A CD CORE UNIT A 2 2 MOTOR DRIVER DRIVER RF AMP SERVO DSP DAC 18 7 2 5 19 20 15 17 16 12 3 9 11 10 EWmodel UC ES model A1 2 ...

Страница 14: ...14 CDX P1250 1 2 3 4 1 2 3 4 D C B A A2 2 A 1 2 SYSTEM CONTROLLER EWmodel UC ESmodel ...

Страница 15: ...15 CDX P1250 5 6 7 8 5 6 7 8 D C B A A2 2 GGC1257 SRM2B256SLTMX70 B CN911 LER SRAM IP BUS DRIVER POWER UNIT EWmodel UC ESmodel ...

Страница 16: ...iv 9 CH2 TD 0 5V div Test mode 32 tracks jump REV 0 5ms div 8 CH1 TE 0 5V div 9 CH2 TD 0 5V div Test mode Single jump REV 0 5ms div 8 CH1 TE 0 5V div 9 CH2 TD 0 5V div Test mode 100 tracks jump REV 5ms div 6 CH1 FE 0 1V div 3 CH2 FD 0 2V div Normal mode Play 20ms div 3 CH1 FD 0 5V div 0 CH2 MD 1V div Normal mode Focus close 12cm 0 5s div 3 CH1 FD 0 5V div 0 CH2 MD 1V div Normal mode Focus close 8c...

Страница 17: ...v 5µs div Normal mode Play 8 CH1 TE 1V div CH2 TEC 1V div Test mode Focus close Tracking open 2ms div 8 CH1 TE 0 5V div 6 CH2 FE 0 5V div Normal mode AGC after focus close 0 2s div 20ms div SCKO 2V div 1µs div Normal mode Play DOUT 2V div 10µs div Normal mode Play LRCK 2V div 20µs div Normal mode Play VD 5V div 50ms div Normal mode No disc GND REFO REFO GND REFO REFO REFO REFO REFO REFO REFO REFO ...

Страница 18: ...5V div Normal mode During AGC 1 CH1 RFI 1V div CH2 HOLD 5V div Normal mode The defect part passes 800µm B D 500µs div 1ms div 0 5ms div 3 CH1 FD 1V div CH2 HOLD 5V div Normal mode The defect part passes 800µm B D 0 5ms div 9 CH1 TD 0 1V div CH2 HOLD 5V div Normal mode The defect part passes 800µm B D 0 5ms div REFO REFO REFO REFO REFO REFO REFO REFO REFO REFO REFO REFO ...

Страница 19: ...19 CDX P1250 1 2 3 4 1 2 3 4 D C B A B 3 2 POWER UNIT 470 16 470 16 1SR139 400 CTH1047 1mH 1SR139 400 220000 5R5 HZS6L B1 MUTE 8V REG CEK1018 Yellow B A ...

Страница 20: ...CDX P1250 1 2 3 4 1 2 3 4 D C B A A SIDE A CD CORE 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 dia gram CN911 B C CN801 ...

Страница 21: ...RESET EJECT MAG 21 CDX P1250 D C B A 1 2 3 4 1 2 3 4 A SIDE B CD CORE UNIT A Capacitor Connector P C Board Chip Part SIDE A SIDE B 2 Viewpoint of PCB diagrams ...

Страница 22: ...22 CDX P1250 1 2 3 4 1 2 3 4 D C B A SIDE A B POWER UNIT B CN701 A CORD 4 2 POWER UNIT IP BUS ...

Страница 23: ...23 CDX P1250 D C B A 1 2 3 4 1 2 3 4 B POWER UNIT B SIDE B ...

Страница 24: ...24 CDX P1250 1 2 3 4 1 2 3 4 D C B A D 4 4 SWITCH PCB SWITCH PCB D C C 4 3 MECHANISM PCB A CN101 E D MECHANISM PCB C M M854 CRG M M851 SPDL HOME TRP DSP D851 PICKUP UNIT SERVICE ...

Страница 25: ...25 CDX P1250 D C B A 1 2 3 4 1 2 3 4 E 4 5 MOTOR PCB MOTOR PCB E C ...

Страница 26: ...1J R 259 RS1 16S102J R 260 RS1 16S681J R 298 RS1 16S681J R 301 RS1 16S103J R 302 RS1 16S153J R 303 RS1 16S103J R 304 RS1 16S153J R 305 RS1 16S103J R 306 RS1 16S752J R 307 RS1 16S103J R 308 RS1 16S752J R 309 RA4C332J R 311 RS1 16S102J R 501 RS1 16S102J R 651 RSK1 16S153J R 652 RSK1 16S153J R 653 RSK1 16S153J R 654 RSK1 16S153J R 659 RSK1 16S123J R 660 RSK1 16S123J R 661 RSK1 16S123J R 662 RSK1 16S1...

Страница 27: ...0V CCH1300 C 273 CKSQYB334K16 C 301 CEV101M10 C 302 CKSQYB224K16 C 501 EW model CKSQYB104K25 C 502 EW model CKSRYB471K50 C 651 CCSRCH391J50 C 652 CCSRCH391J50 C 653 CCSRCH181J50 C 654 CCSRCH181J50 C 655 CCSRCH181J50 C 656 CCSRCH181J50 C 661 CKSQYB104K25 C 664 CKSRYB103K25 C 665 CEV470M6R3 C 666 CKSRYB103K25 C 701 CKSRYB103K25 C 702 CKSQYB473K16 C 703 CKSQYB473K16 C 707 CKSRYB103K25 C 708 CKSQYB104...

Страница 28: ... Unit Number Unit Name Mechanism PCB Q 851 Photo transistor PT4800 S 853 Spring Switch HOME CSN1051 Unit Number Unit Name Switch PCB D 851 LED CN504 2 S 851 Spring Switch DSP CSN1051 S 852 Spring Switch TAP CSN1052 Unit Number Unit Name Motor PCB M 853 Motor TRAY CXB3005 Miscellaneous Parts List Pickup Unit P8 Service CXX1285 M 851 Motor SPINDLE CXB3003 M 852 Motor ELV CXB3006 M 854 Motor CARRIAGE...

Страница 29: ... buttons move the pickup unit to the innermost track 3 Press key 9 to close focus the display should read 91 Press key 9 2 times Enter Rough Servo mode Press key 8 to implement the tracking balance adjustment the display should now read 81 4 As shown in the diagram above monitor the LPF outputs using the oscilloscope and check that the phase differ ence is within 75 Refer to the photographs suppli...

Страница 30: ...30 CDX P1250 Grating waveform 45 0 75 60 30 90 Echt Xch 20mV div AC Fcht Ych 20mV div AC ...

Страница 31: ...loscope One L P F Measuring Points EREF EPVO Setting Without a magazine in Test mode With the mechanism placed upside down Place the CD mechanism module so that the CD core unit is above Confirmation Procedure 1 Enter Test mode then select Multi CD player 2 Press key 7 to enter Mechanism Test mode 3 Press key 12 twice to specify the amount of movement 6 2 ADJUSTMENT OF ELEVATION WHEN THE CD CORE U...

Страница 32: ... CD core unit below Take care not to short cir cuit the PCB 11 Confirm the height of the stage Use the DISC key to select Disc No 6 Check if the stopper bend of the clamp lever is engaged in the groove of the frame stopper Fig 2 4 Note The stopper bend will be pressed downward into the groove for final clamping Confirm the engagement position of the stopper bend If the stopper bend is engaged in t...

Страница 33: ...the volt age of EREF adjusted in step 8 by 10 mV 13 Place the mechanism horizontal Go back to step 11 to reconfirm the stage height 14 When adjustment of the stage height is completed proceed as fol lows 15 Press the EJECT switch 16 Once operation of the mechanism has stopped turn the power OFF 17 Wait more than one minute after the power is turned off then turn the power ON and insert a magazine ...

Страница 34: ...mp lever Frame stopper OK Engaged in the center and pressed downward NG Fig 1 Dislocated toward the first CD Adjust the insertion gate of magazine to the sixth scale Dislocated toward the twelfth CD Fig 2 Fig 3 Fig 4 E 1 2 3 4 6 5 7 8 9 B C ...

Страница 35: ...sub Q code 28 FLAG O Flag output pin to indicate that audio data currently being output consists of noncorrectable data 29 DIN I Serial data input to internal DAC 30 DOUT O Serial audio data output 31 SCKIN I Serial clock input to internal DAC 32 SCKO O Audio data that is output from DOUT changes at rising edge of this clock 33 LRCKIN I LRCK signal input to internal DAC 34 LRCK O Signals to distin...

Страница 36: ... regulation 75 AGCO O RF signal output of after gain adjustment 76 AGCI I RF AGC amplifier input 77 RFO O RF summing amplifier output 78 EQ2 RF amplifier equalizer parts additional pin 79 EQ1 RF amplifier equalizer parts additional pin 80 RF I RF summing amplifier inverted input 81 A GND Analog circuit GND 82 A I Photo detector A input 83 C I Photo detector C input 84 B I Photo detector B input 85...

Страница 37: ...y electrostatic induction BA05FP Reference voltage Vcc GND OUT 1 2 3 VCC 28 27 26 25 PreVcc OPIN4 OPIN4 OPOUT4 24 23 22 OPIN3 OPIN3 OPOUT3 21 20 19 18 GND STBY PowVcc VO3 17 16 15 VO3 VO4 VO4 1 2 3 4 BIAS IN OPIN1 OPIN1 OPOUT1 5 6 7 OPIN2 OPIN2 OPOUT2 8 9 10 11 GND MUTE PowVcc VO2 12 13 14 VO2 VO1 VO1 Stand by Mute Level shift Level shift Level shift Level shift BA5986FM ...

Страница 38: ...W I When there is SRAM H 26 CCS O C IP BUS chip select 27 28 NC Not used 29 IPIN I Data input from IP BUS interface IC 30 IPOUT O C Data output for IP BUS interface IC 31 32 NC Not used 33 FMIPSW I FM IP BUS select switch 34 testin I Test program mode input 35 XSO O NM LSI data output 36 XSI I LSI data input 37 XSCK O NM LSI clock output 38 M6M12 I 6 12 disc select input 39 43 NC Not used 44 rd O ...

Страница 39: ...er control output 79 I2 O C Motor driver control output 80 I4 O C Motor driver control output 81 88 D0 D7 I O C SRAM data bus 89 90 NC Not used 91 DSP I DISC detect timing input 92 disk I Disc detector input 93 ELVPVO I Voltage input from ELV position sense 94 ELVREF I ELV reference voltage input 95 TRP I Tray position input 96 AVSS I A D GND 97 VDIN Power supply short sensor input 98 VREF I A D c...

Страница 40: ...e Upper Case Removing the CD Mechanism Module Remove the four dampers Fig 5 Disconnect the connector Fig 5 Remove the two springs Fig 5 Disconnect the connector and then remove the CD Mechanism Module Fig 6 Removing the Grille Unit not shown 1 Press the two tabs indicated by arrows and then pull out the Grille Unit Fig 7 CD Mechanism Module Fig 5 Fig 6 7 2 DIAGNOSIS 7 2 1 DISASSEMBLY Power Unit ...

Страница 41: ...e make sure that the flexible tray motor printed circuit board and flexible relay card are not pulled exces sively 6 Remove screw A and then remove the carriage motor assy lighting conductor feed screw holder feed screw and belt see Fig 9 7 Remove screw B on the main side and the pickup unit together with the guide shaft see Fig 9 Fig 8 Flexible card Erect Flexible relay card han dle with care Fle...

Страница 42: ...em when making adjustment Disc detection during tray extraction and return oper ations is performed by means of the photo transistor in this unit Consequently if the inside of the unit is exposed to a strong light source with the outer casing removed for repairs or adjustment the following mal functions may occur Even with a disc loaded the unit detects no disc and cannot start play Although a 12 ...

Страница 43: ...isplay T Close and F T AGC and RF AGC and Fit Servo Display Power ON Not adjustment for T Offset Display Display 8 RF AMP Gain Select 8 Power OFF Power OFF Power OFF 8x 8x 8x TRK SEC MIN 9x 9x 9x TRK SEC MIN 8x 8x 8x TRK SEC MIN 9x 9x 9x TRK SEC MIN or 8x 8x 8x TRK SEC MIN 9x 9x 9x TRK SEC MIN or 00 00 00 TRK SEC MIN 99 99 99 TRK SEC MIN or 00 00 00 TRK SEC MIN 99 99 99 TRK SEC MIN or 00 00 00 TRK...

Страница 44: ... inner diameter CRG can t be moved from inner diameter Failure on home switch or CRG move mechanism 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 Failure on spindle stains or damages on disc or excessive vibrations Subcode NG A disc not contain...

Страница 45: ...ouble analysis 1 Shifting to the New Test Mode 1 Turn on the current test mode by starting the reset from the 4 and 6 keys together 2 Select M CD for the source through the specified procedure including use of the SOURCE key Then press the 12 key while maintaining the regulator turned off 3 After the above operations the new test mode remains on irrespective of whether the M CD is turned on or off...

Страница 46: ...tup Status No Contents Protective action 00 CD 5V ON process in progress None 01 Servo LSI initialization 1 3 in progress None 02 Servo LSI CRAM initialization in progress None 03 Servo LSI initialization 2 3 in progress None 04 Offset adjustment 1 3 in progress None 05 Offset adjustment 2 3 in progress None 06 Offset adjustment 3 3 in progress None 07 FZD adjustment in progress None 08 Servo LSI ...

Страница 47: ...s closed Off focus Carriage closing in progress 41 Focus tracking AGC started Off focus 42 Focus AGC started Off focus 43 Focus AGC in progress Off focus 44 Tracking AGC in progress Off focus 45 Standing by after focus tracking AGC are over Off focus 46 Spindle processes applicable servo Off focus 47 Check for servo close is started Off focus 48 Check of LOCK pin started Off focus or spindle not l...

Страница 48: ...48 CDX P1250 7 3 BLOCK DIAGRAM A C D E ...

Страница 49: ...49 CDX P1250 B ...

Страница 50: ... switch is set to the ON or ACC position the CD title display and ITS memory are cleared Clear button 8 2 SPECIFICATIONS General System Compact disc audio system Usable discs Compact Disc Signal format Sampling frequency 44 1 kHz Number of quantization bits 16 linear Power source 14 4 V DC 10 8 15 1 V allowable Max current consumption 1 0 A Weight 2 2 kg 4 9 lbs Dimensions 257 W 94 H 172 D mm 10 1...

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