Pioneer DEH-1350B Service Manual Download Page 73

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CX-958

3) Carriage Servo System

The carriage servo supplies the tracking equalizer’s

low-frequency component (lens position data) output to

the carriage equalizer, then, after providing a fixed

amount of gain to it, outputs the drive signal from the

LSI. This signal is then applied to the carriage motor via

the driver IC.

When the lens offset reaches a certain level during play,

the entire pickup must be moved into the forward

direction. Therefore, the equalizer gain is set to the

level that allows to generate a voltage higher than the

carriage motor starting voltage. In actual operations, a

certain threshold level is set for the equalizer output by

the servo LSI so that the drive voltage may be output

from the servo LSI only when the equalizer output

exceeds the threshold level. This arrangement helps

reducing power consumption. Also, due to disc

eccentricity or other factors, the equalizer output may

cross the threshold level a number of times. In this

case, the drive voltage output from the LSI will have

pulse-like waveform.

DIG.

COP

COM

IC301

BA5985FM

CARRIAGE

MOTOR

IC201 UPD63711GC

KICK, BRAKE

REGISTERS

DAC

CONTROL

FROM
TRACK. EQ

DRIVE ON/OFF THRESHOLD

CARRIAGE MOVED AT THESE POINTS

TRACKING DRIVE
(LOW FREQUENCY)

LENS POSITION

CRG DRIVE
(INSIDE UPD63711GC)

CRG MOTOR VOLTAGE

Fig.16 : CARRIAGE SERVO BLOCK DIAGRAM

Fig.17 : CARRIAGE SIGNAL WAVEFORM

Summary of Contents for DEH-1350B

Page 1: ...ICS ASIACENTRE PTE LTD 253 Alexandra Road 04 01 Singapore 159936 C PIONEER CORPORATION 2000 K ZZA DEC 2000 Printed in Japan ORDER NO CRT2593 HIGH POWER CD PLAYER WITH FM AM TUNER DEH 1350B X1M ES Service Manual This service manual should be used together with the following manual s Model No Order No Mech Module Remarks DEH 1350 X1M ES CRT2559 CX 958 CRT2423 S8 1 CD Mech Module Circuit Description ...

Page 2: ...10VT D 1704 LED SML210PT SML210VT D 1705 LED SML210PT SML210VT D 1706 LED SML210PT SML210VT D 1707 LED SML210PT SML210VT D 1708 LED SML210PT SML210VT IL 1801 Lamp 14V 40mA CEL1651 CEL1662 IL 1802 Lamp 14V 40mA CEL1651 CEL1662 LCD CAW1633 CAW1688 R 1708 RS1 16S151J RS1 16S181J R 1710 RS1 16S151J RS1 16S181J R 1712 RS1 16S151J RS1 16S181J EXTERIOR Page 4 EXTERIOR SECTION PARTS LIST Part No Mark No S...

Page 3: ...ual CONTENTS 1 SAFETY INFORMATION 2 2 EXPLODED VIEWS AND PARTS LIST 2 3 BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 8 4 PCB CONNECTION DIAGRAM 24 5 ELECTRICAL PARTS LIST 32 6 ADJUSTMENT 35 7 GENERAL INFORMATION 39 7 1 DIAGNOSIS 39 7 1 1 TEST MODE 39 7 1 2 DISASSEMBLY 42 7 1 3 CONNECTOR FUNCTION DESCRIPTION 46 7 2 PARTS 47 7 2 1 IC 47 7 2 2 DISPLAY 54 7 3 OPERATIONAL FLOW CHART 55 8 OPERATIONS AND SPECIFIC...

Page 4: ...ORMATION 2 EXPLODED VIEWS AND PARTS LIST 2 1 PACKING 14 1 16 10 12 13 15 11 5 9 2 8 7 6 4 3 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 r...

Page 5: ...cription Part No Mark No Description Part No 1 PACKING SECTION PARTS LIST NOTE Parts marked by are generally unavailable because they are not in our Master Spare Parts List Screws adjacent to mark on the product are used for disassembly Part No Mark No Symbol and Description DEH 2350 X1M ES DEH 1350 X1M ES 12 Carton CHG4150 CHG4157 13 Contain Box CHL4150 CHL4157 16 Case Assy CXB3520 Not used 2 CON...

Page 6: ...4 DEH 2350 1350 2 2 EXTERIOR B A ...

Page 7: ... Unit CXB4033 44 Chassis Unit CXB4625 45 Detach Grille Assy See Contrast table 2 46 Screw BPZ20P100FZK 47 Button DETACH CAC5789 48 Button EQ LD CAC6821 49 Button 1 6 CLK CAC6822 50 Button A B CAC6823 51 Button EJECT BSM CAC6824 52 Button CROSS CAC6825 53 Button SOURCE CAC6851 54 Spring CBH2210 55 Cover CNS6114 56 Keyboard Unit See Contrast table 2 57 LCD See Contrast table 2 58 Connector CN1801 CK...

Page 8: ...6 DEH 2350 1350 2 3 CD MECHANISM MODULE C D ...

Page 9: ...565 38 Frame CNC8749 39 Lever CNC9265 40 Arm CNC8663 41 Bracket CNC8567 42 43 Spacer CNM3315 44 Sheet CNM6659 45 46 47 Ball CNR1189 48 Belt CNT1086 49 Roller CNV4509 50 Arm CNV6037 51 Arm CNV5247 52 Arm CNV5248 53 Arm CNV5249 54 Guide CNV5254 55 Guide CNV5255 56 Gear CNV5257 57 Gear CNV5256 58 Guide CNV6272 59 Damper CNV6174 60 Arm CNV6096 61 Arm CNV6031 62 Arm CNV6211 63 Guide CNV6012 64 Guide CN...

Page 10: ...4 23 39 X201 TD FD SD MD RF AMP DSP SERVO DAC IC 201 UPD63711GC 16 CN701 CN605 17 1 8 24 CDL IC 301 BA5985FM S801 HOME 12 16 18 11 14 13 10 9 SOP TOP FOP SOM COP COM LOP LOM FWD REV MUTE CD DRIVER 7 18 19 20 14 3 2 4 CLAMP DINC EJTD CDLOAD EJET CONT PDIO TUNER AMP UNIT CONTROL UNIT PICKUP UNIT SERVICE P8 PHOTO UNIT S8 4 VD CD5VON IC 3 EEPROM FM AM TUNER UNIT 28 27 FM AM 1ST IF 10 7MHz T51 Q51 CF51...

Page 11: ...ER IC 601 2 2 PE5196A ASENS 63 BSENS 64 SYSPW 42 MUTE 44 KYDT 8 DPDT 9 RESET 60 SWVDD 41 Frontout_L 10 Rearout_L 11 POWER AMP IC 302 PAL006A 14 12 22 4 5 3 21 23 FL MUTE STBY 25 B REM RL B U bsens asens Q902 Q351 MUTE Q350 B KEYBOARD UNIT CN1801 CN601 LCD 22 23 X1801 20 18 Q650 RESET IC 602 S 80834ANY VDD 1 2 SYSPW GND 5 B REM FUSE 10A CD5VON 31 34 23 80 79 27 22 35 VDCONT CLAMP DSCSNS EJTSNS CDLO...

Page 12: ...ircuit 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 01µF 101 10 100µF 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...

Page 13: ...25 PAL006A DEH 2350 X1M ES TDA7386 DEH 1350 X1M ES 600µH 331 16 CN901 CN301 CN605 CEK1136 DEH 2350 X1M ES DEH 2350 X1M ES DEH 1350 X1M ES FM 100 3 6dBs AM 30 6 9dBs CD 10 2dBs FM 100 29 6dBs AM 30 19 1dBs CD 36 2dBs CD 4 1dBs CD 9 4dBs RESET E VOL FIE EQ POWER AMP A SENS B SENS CONTROL UNIT C A b ...

Page 14: ...12 DEH 2350 1350 1 2 3 4 1 2 3 4 D C B A A a A a A b 1 DSP 201M S00B 183 162 162 183 272 272 CN403 CN402 FM 100 19 5dBs AM 30 30dBs FM AM TUNER UNIT TUNER AMP UNIT A ...

Page 15: ... ohms Capacitors Code Practical value 103 0 01µF 101 10 100µF 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 betw...

Page 16: ...32 16 B REM DEH 2350 X1M ES NC DEH 1350 X1M ES Pin 25 PAL006A DEH 2350 X1M ES TDA7386 DEH 1350 X1M ES 600µH CN901 CN301 CEK1136 DEH 2350 X1M ES FM 100 3 6dBs AM 30 6 9dBs CD 10 2dBs FM 100 29 6dBs AM 30 19 1dBs CD 36 2dBs CD 9 4dBs E VOL FIE EQ POWER AMP 1 ...

Page 17: ...15 DEH 2350 1350 5 6 7 8 5 6 7 8 D C B A A b A a A b 600µH 331 16 CN605 CEK1136 DEH 2350 X1M ES DEH 1350 X1M ES CD 4 1dBs RESET A SENS B SENS CONTROL UNIT C 2 ...

Page 18: ...16 DEH 2350 1350 1 2 3 4 1 2 3 4 D C B A 3 3 KEYBOARD UNIT KEYBOARD UNIT LCD CAW1606 DEH 2350 X1M ES CAW1633 DEH 1350 X1 LCD DRIVER KEY CONTROLLER B B ...

Page 19: ...17 DEH 2350 1350 5 6 7 8 5 6 7 8 D C B A A CN601 50 X1M ES IL1801 1802 CEL1651 14V 40mA R1708 1710 1712 151 D1701 1708 SML210PT CLK BSM EQ LOUD B ...

Page 20: ...P8 PICKUP UNIT PHOTO UNIT S8 CONTROL UNIT SPINDLE MOTOR Q2 CPT230SX TU Q1 CPT230SX TU M3 CXB2562 CARRIAGE MOTOR M1 CXB2190 M2 CXB2195 LOADING MOTOR RF AMP SE 5V REGULATOR CD DRIVER CN101 CN802 CN801 CL203IRXTU CL203IRXTU 3 4 CD MECHANISM MODULE D D C 18 C ...

Page 21: ...DEH 2350 1350 5 6 7 8 5 6 7 8 D C B A MP SERVO DSP DAC LPF SWITCHES CONTROL UNIT S801 HOME SWITCH ON OFF S802 CLAMP SWITCH ON OFF The underlined indicates the switch position CN701 CN605 A 19 C ...

Page 22: ...div 9 CH2 TD 0 5V div Test mode 32 tracks jump FWD 0 5ms div 8 CH1 TE 0 5V div 9 CH2 TD 0 5V div Test mode Single jump FWD 0 5ms div 8 CH1 TE 0 5V div 9 CH2 TD 0 5V div Test mode 100 tracks jump FWD 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 8...

Page 23: ... 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 PLCK 2V div 0 5µs div Normal mode play 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 RE...

Page 24: ... 5V div Normal mode During AGC 1 CH1 RFI 1V div CH2 HOLD 5V div Normal mode The defect part passes 800µm B D 0 2ms div 1ms div 0 5ms div 3 CH1 FD 0 5V 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 ...

Page 25: ...23 DEH 2350 1350 ...

Page 26: ... several destination For further information for respective destinations be sure to check with the schematic diagram 2 Viewpoint of PCB diagrams A Capacitor Connector P C Board Chip Part SIDE A SIDE B 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 16 CN1801 B CN701 C CORD ASSY 4 PCB CONNECTION DIAGRAM 4 1 TUNER AMP UNIT A TUNER AMP UNIT ...

Page 27: ...25 DEH 2350 1350 5 6 7 8 5 6 7 8 D C B A A FRONT 1 2 3 1 2 FM AM TUNER UNIT SIDE A ANTENNA PRE OUT ...

Page 28: ...26 DEH 2350 1350 1 2 3 4 1 2 3 4 D C B A A 4 5 6 3 2 1 1 2 3 6 5 4 A TUNER AMP UNIT ...

Page 29: ...27 DEH 2350 1350 5 6 7 8 5 6 7 8 D C B A A 1 2 3 6 5 4 4 5 6 3 2 1 FRONT SIDE B ...

Page 30: ...28 DEH 2350 1350 1 2 3 4 1 2 3 4 D C B A LOUD VOL VOL SOURCE SOURCE 1 2 3 4 5 6 CLK BSM EJECT BAND AUDIO VOL VOL EQ 4 2 KEYBOARD UNIT SIDE A KEYBOARD UNIT B B ...

Page 31: ...29 DEH 2350 1350 1 2 3 4 1 2 3 4 D C B A B B CN601 A SIDE B KEYBOARD UNIT ...

Page 32: ...EH 2350 1350 1 2 3 4 1 2 3 4 D C B A 4 3 CD MECHANISM MODULE CONTROL UNIT HOME M1 CARRIAGE MOTOR M2 LOADING MOTOR M3 SPINDLE MOTOR PICKUP UNIT SERVICE P8 CN802 CN605 3 2 1 PHOTO UNIT S8 SIDE A D D C C C D A ...

Page 33: ...31 DEH 2350 1350 1 2 3 4 1 2 3 4 D C B A CLAMP SIDE B CONTROL UNIT C C ...

Page 34: ...L B2 D 907 Diode HZS9L B3 D 941 Diode S5688G D 942 Diode S5688G D 981 Diode HZS9L B1 L 310 Ferri Inductor LAU1R0M L 401 Ferri Inductor LAU4R7K L 402 Ferri Inductor LAU2R2K L 403 Inductor LAU100K L 610 Ferri Inductor LAU101K L 611 Ferri Inductor LAU2R2K L 650 Ferri Inductor LAU2R2K L 901 Choke Coil 600µH CTH1221 X 610 Crystal Resonator 4 194304MHz CSS1023 AR 946 Arrester DSP 201M S00B FM AM Tuner U...

Page 35: ...4K16 C 368 CKSQYB474K16 C 369 CKSQYB474K16 C 370 CKSQYB474K16 C 371 CKSQYB474K16 C 372 CKSQYB225K10 C 373 DEH 2350 X1M ES CKSRYB473K25 C 390 CKSRYB104K16 C 391 3300µF 16V CCH1368 C 411 CKSRYB223K25 C 412 CKSRYB223K25 C 413 CKSRYB102K50 C 414 CEJA220M10 C 415 CKSRYB473K16 C 416 CEAL101M10 C 417 CKSRYB472K50 C 419 CCSRCH101J50 C 420 CCSRCH101J50 C 462 CKSRYB183K25 C 463 CKSRYB183K25 C 490 CKSQYB103K...

Page 36: ...16S102J R 502 RA4C681J R 601 RS1 16S102J R 602 RS1 16S102J R 605 RS1 16S0R0J R 606 RS1 16S0R0J R 801 RS1 8S751J R 803 RS1 8S751J R 902 RS1 16S0R0J R 906 RS1 16S0R0J CAPACITORS C 101 CKSRYB102K50 C 102 CKSRYB104K16 C 103 CEV101M6R3 C 104 CEV470M6R3 C 105 CKSQYB334K16 C 106 CKSQYB334K16 C 107 CKSQYB334K16 C 201 CKSRYB104K16 C 202 CKSRYB471K50 C 203 CKSRYB104K16 C 205 CEV101M6R3 C 206 CKSRYB104K16 C ...

Page 37: ... in the unit s software are rendered inoperative in test mode be very careful to avoid mechanical and or electrical shocks to the sys tem when making adjustment Disc detection during loading and eject operations is performed by means of a photo transistor in this unit Consequently if the inside of the unit is exposed to a strong light source when the outer casing is removed for repairs or adjustme...

Page 38: ...isplay Display T Close and F T AGC and RF AGC and Fit Servo Power ON Not adjustment for T Offset Display Display 2 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 SEC MIN 99 99 99 TRK...

Page 39: ...to the innermost track 3 Press key 3 to close focus the display should read 91 Press key 2 to implement the tracking balance adjust ment the display should now read 81 Press key 3 2 times The display will change returning to 81 on the fourth press 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 photograph...

Page 40: ...38 DEH 2350 1350 Grating waveform Ech Xch 20mV div AC Fch Ych 20mV div AC 45 0 75 60 30 90 ...

Page 41: ...ailure 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 containing CD R data is found Turned over disc are found though...

Page 42: ... while maintaining the Acc turned off 2 Key Correspondence Key Test mode New test mode Example Power Off Power On In play Error Production BAND To power on To power off Time Err No switching offset adjustment performed FWD Kick FF TR REV Kick REV TR 1 T Close AGC performed Scan parameter display switching 2 T BAL adjustment Mode T Open 3 To power on F Close RF AGC AGC offset adjustment not perform...

Page 43: ...2 Off focus 25 T balance adjustment 2 2 Off focus 26 Standing by after spindle rough servo is over Off focus 27 Setup before RF AGC first is started Off focus 28 RF AGC first in progress Off focus 29 Setup before RF AGC second is started Off focus 30 RF AGC second in progress Off focus 31 Tracking close in progress Off focus 32 Standing by after tracking is closed Off focus 33 Focus AGC started Of...

Page 44: ... then remove the Tuner Amp Unit Fig 3 Removing the Case Unit not shown 1 Remove the Case Unit Removing the CD Mechanism Module Fig 1 Remove the four screws Disconnect the connector and then remove the CD Mechanism Module not shown Removing the Panel Assy not shown 1 Disconnect the two stoppers and then remove the Panel Assy Fig 1 Fig 2 Fig 3 Tuner Amp Unit Cover CD Mechanism Module 7 1 2 DISASSEMB...

Page 45: ...age and remove the mechanism from the one damper by driving it up aslant into front side direction Note When assembling the Carriage Mechanism coat the dampers with alcohol prior to the assembly Removing the Clamp Arm Assy 1 Remove a Spring A a B and a Spring C 2 Drive the Clamp Arm Assy up into rear side direction then disengage the arm from its current position Finally drive the assembly approxi...

Page 46: ...are must be exercised so that cord may be caught by the gear Removing the LO Arm Assy 1 Remove two Pins to dismount the LO Arm Assy Removing the Control Unit and the Spindle Motor 1 Remove from the connector after mounting the short pin on the flexible PCB of the pickup unit 2 Remove two Soldered joints then remove two Screws A 3 Remove two connectors and a Screw B 4 Disengage the Control Unit fro...

Page 47: ...ve the Belt a Screw B two Screws C a Guide and a Screw Unit 4 Dismount the Carriage Motor Note When assembling the Belt use care so that it may not be contaminated by grease Removing the Pickup Unit 1 Remove two Screws and a Shaft 2 Dismount the Pickup Unit Pickup Unit Shaft C Guide B Screw Unit Carriage Motor A A C Belt Loading Motor ...

Page 48: ... DEH 2350 1350 7 1 3 CONNECTOR FUNCTION DESCRIPTION 5 7 9 1 3 4 6 8 2 10 12 14 16 11 13 15 1 BACK UP 2 GND 3 NC 4 ACC 5 B REM 6 NC 7 NC 8 NC 9 FL 10 RL 11 FL 12 RL 13 FR 14 RR 15 FR 16 RR PRE OUT ANTENNA ...

Page 49: ...a control output 25 xrst O C CD LSI reset control output 26 xstb O C CD LSI strobe output 27 CLAMP I Disc clamp sense input 28 MIRR I Mirror detection input 29 FOK I Focus OK signal input 30 LOCK I Spindle lock detector input 31 CDLOAD O LOAD motor loading control output 32 TELIN I Cellular mute input 33 VSS VSS 34 CDEJECT O LOAD motor eject control output 35 CD5VON O C CD 5V power supply control ...

Page 50: ... connection pin 70 X1 Crystal oscillator connection pin 71 IC VPP IC VPP 72 NC Not used 73 TESTIN I Test program mode input 74 AVDD AVDD 75 AVREF0 AVREF0 76 SL I Signal level input 77 TEMP I Temperature detection input 78 VDSENS I VD power supply sense input 79 DINC I Disc detection input 80 EJTD I Disc eject position detect input 80 1 20 21 40 41 60 61 PE5196A Output Format Meaning C C MOS output...

Page 51: ...ut analogue input 17 REM I Remote control reception 18 DPDT I Display data input 19 NC Not used 20 KYDT O Key data output 21 MODA GND 22 X0 Crystal oscillator connection pin 23 X1 Crystal oscillator connection pin 24 VSS GND 25 26 KDT2 3 I Key data input 27 NC Not used 28 KST4 O Key strobe output 29 32 NC Not used 33 55 SEG35 13 O LCD segment output 56 VDD Power supply 57 64 SEG12 5 O LCD segment ...

Page 52: ...dicate 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 distinguish the right and left channels of the a...

Page 53: ...alizer 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 D I Photo detector D input 86 F I Photo detector F input 87 E I Photo detector E input 88 A VDD Positive power supply terminal to analog circuit 89 REFOUT O...

Page 54: ...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 1CM 1CM 1CM 1CM amp_vcc PAL006A ...

Page 55: ...ed up to the VDD at 47kΩ 16 CE1 I chip enable 1 AF RF chip enable Active at High To be grounded at 47kΩ 17 NC Not used 18 LDET O lock detector Active at Low To be pulled up to the VDD at 47kΩ 19 CREQ I current request Active at Low To be grounded at 47kΩ 20 NC Not used 21 COMP O composite signal FM composite signal output r out 100Ω 22 VCC power supply Analog section power supply pin D C 8 4V 0 3V...

Page 56: ...EG6 SEG5 SEG4 SEG3 SEG2 NC NC SEG19 SEG36 COM2B COM0A COM2C COM3B COM2D COM1B COM0B SEG39 SEG38 COM3A COM2A COM1A 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 21 1 47 46 45 44 43 42 41 39 38 50 49 48 40 COM2B COM0A COM2C COM3B COM2D COM1B COM0B COM3A COM2A COM1A SEGMENT COMMON 7 2 2 DISPLAY CAW1606 DEH 2350 X1M ES CAW1633 DEH 1350 X1M ES ...

Page 57: ...SWVDD L 41pin Source keys operative Completes power on operation After that proceed to each source operation SYSPW H 42pin Starts communication with Grille microcomputer Source ON 300ms 300ms In case of the above signal the communication with Grille microcomputer may fail If the time interval is not 300msec the oscillator may be defective ...

Page 58: ...IONS AND SPECIFICATIONS 8 1 OPERATIONS Key Finder Buttons 1 6 EJECT button CD loading slot AUDIO button 5 2 3 buttons SOURCE button buttons BAND button LOCAL BSM button Detach button EQ button LOUD button CLOCK button Head Unit ...

Page 59: ...p from 9 kHz the factory preset step to 10 kHz when using the tuner in North Central or South America Preset Number Indicator Band Indicator Frequency Indicator Manual and Seek Tuning You can select the tuning method by changing the length of time you press the 2 3 button Manual Tuning step by step 0 5 seconds or less Seek Tuning 0 5 seconds or more Note If you continue pressing the button for lon...

Page 60: ... Track Search and Fast Forward Reverse You can select between Track Search or Fast Forward Reverse by press ing the 2 3 button for a different length of time Track Search 0 5 seconds or less Fast Forward Reverse Continue pressing Note If a disc cannot be inserted fully or playback fails make sure the recorded side is down Push the EJECT button and check the disc for damage before reinserting it If...

Page 61: ...Front speaker Left 15 Rear speaker Left 13 Perform these connections when using a different amp sold separately 12 With a 2 speaker system do not connect anything to the speaker leads that are not connected to speakers 2 Rear output 1 This product 3 Antenna jack 4 Fuse 5 Yellow To terminal always supplied with power regardless of ignition switch position 7 Black ground To vehicle metal body 6 Red ...

Page 62: ...l 12 dB High Level 12 dB Loudness contour Low 3 5 dB 100 Hz 3 dB 10 kHz Mid 10 dB 100 Hz 6 5 dB 10 kHz High 11 dB 100 Hz 11 dB 10 kHz volume 30 dB CD player System Compact disc audio system Usable discs Compact disc Signal format Sampling frequency 44 1 kHz Number of quantization bits 16 linear Frequency characteristics 5 20 000 Hz 1 dB Signal to noise ratio 94 dB 1 kHz IEC A network Dynamic range...

Page 63: ...8654 Japan PIONEER ELECTRONICS SERVICE INC P O Box 1760 Long Beach CA 90801 1760 U S A PIONEER ELECTRONIC EUROPE N V Haven 1087 Keetberglaan 1 9120 Melsele Belgium PIONEER ELECTRONICS ASIACENTRE PTE LTD 253 Alexandra Road 04 01 Singapore 159936 C PIONEER CORPORATION 1999 K ZZA OCT 1999 Printed in Japan ORDER NO CRT2423 CD MECHANISM MODULE CX 958 This service manual describes the operation of the C...

Page 64: ...nts are done using this REFO as reference Note During the measurement do not try to short the REFO and GND 1 APC Circuit Automatic Power Control When the laser diode is driven with constant current the optical output has large negative temperature characteristics Thus the current must be controlled from the monitor diode so that the output may be constant APC circuit is for it The LD current is ob...

Page 65: ...ut may go to 1 5 0 3Vpp The RFO signal is used for the EFM DFCT MIRR and RFAGC adjustment circuits 3 RFOK Circuit This circuit generates the signal that is used for indicating the timing of closing the focus or state of the focus close currently being played This signal is output from Pin 4 as the FOK signal It goes high when the focus close and in play The RFOK signal is generated by holding DC l...

Page 66: ...ing Zero Crossing Amplifier TEC signal the tracking zero crossing signal is obtained by multiplying the TE signal four times It is used for locating the zero crossing points of the tracking error The zero cross point detection is done for the following two reasons 1 To count tracks for carriage moves and track jumps 2 To detect the direction in which the lens is moving when the tracking is closed ...

Page 67: ...gainst that of the FE signal at that time then converting the signal to DC level This signal is used for adjusting bias of the FE signal to be described later This signal is not output from the LSI thus its monitoring is not available 9 MIRR Mirror Circuit The MIRR signal shows the on track and off track data and is output from Pin 3 When the laser beam is On track MIRR L Off track MIRR H This sig...

Page 68: ...ng alone This circuit therefore controls the reference voltage ASY on the EFM comparator by use of the fact that 0 and 1 appear fifty fifty in the EFM signal By this arrangement the comparate level is constantly maintained at almost center of the RFO signal level The reference voltage ASY is generated when the EFM comparator output is passed through the low pass filter The EFM signal is output fro...

Page 69: ...d fed to respective actuators and motors 1 Focus Servo System The focus servo main equalizer is consisted of the digital equalizer Fig 10 shows the focus servo block diagram When implementing the focus close on the focus servo system the lens must be brought within the in focus range Therefore the lens is moved up and down according to the triangular focus search voltage to find the focus point Du...

Page 70: ... operations carried out relevant to the focus close the figure shows the case where focus close is not available You can check the S curve search voltage and actual lens behavior by selecting the Display 01 for the focus mode select in the test mode and then pressing the focus close button REFO FD LENS POSITION RELATIVE TO DISC NEAR FAR JUST FOCUSED MD REFO Expanding around Just Focused Point REFO...

Page 71: ...se for a fixed period of time duration can be specified with the command to stop the lens In this way the tracking is closed and normal play is continued To improve the servo loop retracting performance just after the track jump the brake circuit is turned on for 50 ms after the brake pulse has been terminated to increase gain of the tracking servo Fast forward and reverse operations are realized ...

Page 72: ...wn its move by outputting the drive signal that moves the lens into the opposite direction alone Track slippage direction is determined by referencing the TEC and MIRR signals and their phase TEC TZC TEC SQUARED UP INTERNAL SIGNAL MIRR MIRR LATCHED AT TZC EDGES SWITCHING PULSE EQUALIZER OUTPUT SWITCHED DRIVE DIRECTION Note Equalizer output assumed to hava same phase as TEC FORWARD LENS MOVING FORW...

Page 73: ...ations a certain threshold level is set for the equalizer output by the servo LSI so that the drive voltage may be output from the servo LSI only when the equalizer output exceeds the threshold level This arrangement helps reducing power consumption Also due to disc eccentricity or other factors the equalizer output may cross the threshold level a number of times In this case the drive voltage out...

Page 74: ...tically selected 4 Brake This mode is turned on when stopping the spindle motor The microcomputer outputs the brake voltage through the servo LSI The LSI monitors the EFM waveform and if its longest pattern exceeds a certain interval if the rotation is sufficiently slow the flag is set the LSI and the microcomputer turns off the brake voltage When the flag is not up within a specified period time ...

Page 75: ...he following is the adjustment procedure 1 Make sure the focus close is complete 2 Kick the lens in the radial direction to generate the TE waveform 3 At this time the microcomputer reads the TE signal offset value via the servo LSI being calculated by the LSI 4 The microcomputer determines if the read offset value is positive negative or zero If the offset value 0 the adjustment is terminated If ...

Page 76: ...l 3 The microcomputer sends the corresponding command to the servo LSI so that the above gain value may be set This adjustment takes place at the following timing When the focus close alone is completed during the setup process Just before the setup is completed just before the play takes place After the off focus has been corrected during the play 7 Adjustment of Pre Amp Stage Gain It is used for...

Page 77: ...ts are displayed in multiples of approximately 40 mV An example When FZD cancel coefficient 35 35 32 3 3 40 mV 120 mV Since the corrected value is approximately 120 mV the FE offset before adjustment was 120 mV 2 F and T gain adjustment Reference value Focus Tracking 20 A coefficient displayed indicates an amount of adjustment conducted on the reference value An example When AGC coefficient 40 40 ...

Page 78: ...ns on or off the CD driver and the 5V using CONT and CD5VON respectively The loading drive is turned on or off by the input signals CDEJET and CDLOAD No control terminal is provided for turning the loading drive on or off IC301 BA5985FM 5V LOADING MOTOR R801 750 D801 24 5 11 6 7 CN701 VD CDEJET CONT CDLOAD CD5VON D802 IC701 BA05SFP 21 8 28 1 1 2 4 9 10 M R802 750 Fig 20 POWER SUPPLY AND LOADING SE...

Page 79: ...ch the Lock Lever because the disc leaves the lever before it reaches the Centering Arm 4 Succeeding procedures are the same as that for 12 cm discs Clamping Operation 1 Insert a disc 2 The Detection Arm pushed forward by the Detection Lever turns on rotation of the Jump In Rack 3 The Jump In Rack then engages with the Two Step Gear and moves toward right 4 At the same time the Mode Selector Lever...

Page 80: ...engage and remove the mechanism from the two dampers by driving it up aslant into front side direction Note When assembling the Carriage Mechanism coat the dampers with alcohol prior to the assembly Removing the Clamp Arm Assy 1 Remove a Spring A a B and a Spring C 2 Drive the Clamp Arm Assy up into rear side direction then disengage the arm from its current position Finally drive the assembly app...

Page 81: ... must be exercised so that cord may be caught by the gear Removing the LO Arm Assy 1 Remove two Pins to dismount the LO Arm Assy Removing the Control Unit and the Spindle Motor 1 Remove from the connector after mounting the short pin on the flexible PCB of the pickup unit 2 Remove two Soldered joints then remove two Screws A 3 Remove two connectors and a Screw B 4 Disengage the Control Unit from t...

Page 82: ...e Belt a Screw B two Screws C a Guide and a Screw Unit 4 Dismount the Carriage Motor Note When assembling the Belt use care so that it may not be contaminated by grease Removing the Pickup Unit 1 Remove two Screws and a Shaft 2 Dismount the Pickup Unit Pickup Unit Shaft C Guide B Screw Unit Carriage Motor A A C Belt Loading Motor ...

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