Service Manuals, User Guides, Schematic Diagrams or docs for : Pioneer Car Audio DEH-M6067_DEH-M6106

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DEH-M6067_DEH-M6106


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                                                                                                                                ORDER NO.
                                                                                                                             CRT2423

CD MECHANISM MODULE



CX-958
- This service manual describes the operation of the CD mechanism incorporated in models listed in the
   table below.
- When performing repairs use this manual together with the specific manual for model under repair.


   Model No.                                 Order No.                           CD Mechanism Module                  Mechanism Unit
   DEH-P410/X1N/UC                           CRT2414                             CXK5201                              CXB4800
   DEH-P4100/X1N/UC
   DEH-P310/X1N/UC
   DEH-P41/X1N/UC                            CRT2415                             CXK5201                              CXB4800
   DEH-P3100/X1N/UC
   DEH-P4150/X1N/ES                          CRT2416                             CXK5201                              CXB4800
   DEH-P3150/X1N/ES
   DEH-P4100R/X1N/EW                         CRT2417                             CXK5201                              CXB4800
   DEH-3110/X1N/EE
   DEH-3130R/X1N/EW                          CRT2418                             CXK5201                              CXB4800
   DEH-3100R-B/X1N/EW
   DEH-3100R/X1N/EW




                              CONTENTS
                                1. CIRCUIT DESCRIPTIONS ...........................................2
                                2. MECHANISM DESCRIPTIONS.................................17
                                3. DISASSEMBLY .........................................................18

PIONEER CORPORATION              4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, 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
CX-958




1. CIRCUIT DESCRIPTIONS
The LSI (UPD63711GC) used on this unit comprises six main blocks ; the pre-amp section, servo, signal processor,
DAC, CD text decoder (not used on this model) and LPF. It also equips with nine automatic adjustment functions.



1.1 PRE-AMP SECTION
This section processes the pickup output signals to                        EFM 71

create the signals for the servo, demodulator and                          ASY 72

control.
The pickup output signals are I-V converted by the pre-
                                                                            RFI 74
amp with the built-in photo-detector in the pickup, then                                                              Vref
                                                                                                                                                                                     EFM

added by the RF amp to obtain RF, FE, TE, TE zero cross
                                                                          AGCO 75
and other signals.                                                                                                            PEAK DET.
                                                                                                                                                                                     MIRR
                                                                          AGCI 76                                                                                                                To the
This pre-amp section is built in the servo LSI                                                       Vref                  BOTTOM DET.                                                           following stage
                                                                           RFO 77                                                                                                    DEFECT      of the LSI
UPD63711GC (IC201). The following describes function
                                                                           EQ2 78                                          S/H     LPF                                               A3T
of each section.
                                                                           EQ1 79                                                   Vref                            73 C-3T
                                                                                                     Vref
Since this system has a single power supply (+5V), the                                                      Vref
                                                                                                                                                                                     FOK
                                                                            RF- 80
reference voltage for this LSI and pickup are set to                                                                                Vref
                                                                                                                                                                    91 FEO
                                                                                        Vref
REFO (2.5V). The REFO is obtained by passing the                                                                   Vref                                             90 FE-
                                                                                A 82
                                                                                                                                                              A/D
REFOUT from the LSI through the buffer amplifier. The                           C 83
                                                                                        Vref
                                                                                                                                   D/A
REFO is output from Pin 89 of this LSI. All                                     B 84

measurements are done using this REFO as reference.                             D 85                                                Vref
                                                                                                                                                                    93 TEO
                                                                                        Vref
Note : During the measurement, do not try to short the                                                                                                              92 TE-
                                                                                F 86                         Vref
                                                                                                                                                              A/D
REFO and GND.                                                                           Vref                                                                        94 TE2
                                                                                                                                   D/A
                                                                                E 87                                                       Vref


                                                                                                                    Vref
                                                                                                                                                                    98 LD
                                                                            PD 97
                                                                                         VREG

                                                                                    GND
                                                                                    APN
                                                                                   LDON



1) APC Circuit (Automatic Power Control)                                    PN 99

When the laser diode is driven with constant current,                                                                                                                  



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