Pioneer AVX-7000 Service Manual
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Pioneer AVX-7000 Service Manual

Pioneer AVX-7000 Service Manual

7 inch wide av system display /cd player, 7 inch wide av system display
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Service
Manual
7 INCH WIDE AV SYSTEM DISPLAY /CD PLAYER
AVX-P7000CD
7 INCH WIDE AV SYSTEM DISPLAY
AVX-7000
- This service manual should be used together with the following manual(s):
Model
AVX-P7000CD/UC,EW,ES CRT2379
AVX-7000/UC,EW,ES
- This manual contains the information on the LCD module and the Drive mechanism unit used in the
AVX-P7000CD and AVX-7000. For the other information, refer to the main manuals listed above.
CONTENTS
1. EXPLODED VIEWS AND PARTS LIST ......................2
2. SCHEMATIC DIAGRAM.............................................4
3. PCB CONNECTION DIAGRAM..................................6
4. ELECTRICAL PARTS LIST........................................10
5. GENERAL INFORMATION.......................................12
5.1 DISASSEMBLY ..................................................12
PIONEER CORPORATION
PIONEER ELECTRONICS SERVICE INC.
PIONEER ELECTRONIC [EUROPE] N.V.
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER CORPORATION 1999
Order No.
Mech. Module
CRT2380
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
UC,EW,ES
Remarks
ORDER NO.
CRT2276
UC,EW,ES
K-ZZU. JULY 1999 Printed in Japan

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  • Page 1 CRT2380 - This manual contains the information on the LCD module and the Drive mechanism unit used in the AVX-P7000CD and AVX-7000. For the other information, refer to the main manuals listed above. CONTENTS 1. EXPLODED VIEWS AND PARTS LIST ......2 2.
  • Page 2 AVX-P7000CD,AVX-7000 1. EXPLODED VIEWS AND PARTS LIST 1.1 DRIVE MECHANISM UNIT - DRIVE MECHANISM UNIT SECTION PARTS LIST Mark No. Description Part No. MarkNo.Description Part No. ScrewM2X3 FB1521 Guide 376Y ScrewM2X9 FB1523 ScrewM2.6X2.5 FB1519 Spring FS1573 Shaft FD1233 ScrewM2X5.5 FB1522...
  • Page 3 AVX-P7000CD,AVX-7000 1.2 LCD MODULE - LCD MODULE SECTION PARTS LIST Mark No. Description Part No. 181 Video Unit NMP70-8398-112 182 TFT-LCD Module TFD70W14A 183 B/L Unit NMP75-8376-211...

  • Page 4: Schematic Diagram

    AVX-P7000CD,AVX-7000 2. SCHEMATIC DIAGRAM 2.1 VIDEO UNIT...
  • Page 5 AVX-P7000CD,AVX-7000...

  • Page 6: Pcb Connection Diagram

    AVX-P7000CD,AVX-7000 3. PCB CONNECTION DIAGRAM 3.1 VIDEO UNIT IC,Q Q881 Q801 Q206 Q201 Q202 Q203 Q601 Q107 Q106 Q602 Q804 Q201 Q105 Q208 Q104 Q108 Q103 Q653 Q652 Q102 Q651 Q101...
  • Page 7 AVX-P7000CD,AVX-7000 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. SIDE A 2. Viewpoint of PCB diagrams...
  • Page 8 AVX-P7000CD,AVX-7000...
  • Page 9 AVX-P7000CD,AVX-7000 SIDE B...
  • Page 10 AVX-P7000CD,AVX-7000 5. ELECTRICAL PARTS LIST NOTE: - Parts whose parts numbers are omitted are subject to being not supplied. - The part numbers shown below indicate chip components. Chip Resistor RS1/_S___J,RS1/__S___J Chip Capacitor (except for CQS..) CKS.., CCS.., CSZS..=====Circuit Symbol and No.===Part Name Part No.
  • Page 11 AVX-P7000CD,AVX-7000 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S105J CKSRYB103K50 RS1/16S272J CEHV4R7M50 RS1/8S561J CCSRCH030C50 RS1/4S122J CKSRYF104Z25 RS1/16S101J CEHV1R0M50 RS1/16S105J CKSRYF104Z25 RS1/16S101J CKSRYF104Z25 RS1/16S102J CKSRYB103K50 RS1/16S822J CKSRYB103K50 RS1/16S562J...
  • Page 12 AVX-P7000CD,AVX-7000 5. GENERAL INFORMATION 5.1 DISASSEMBLY - Removing the Back Light Unit 1. Remove the four screws. 2. Disconnect the two connectors. 3. Remove the rear shield and front shield. Rear Shield Front Shield 4. Disconnect the connector and remove the PCB.
  • Page 13 AVX-P7000CD,AVX-7000 - CWX2389 LCD module troubleshooting No images with the composite signal No images with the composite signal Go to Item 2 Back light doesn't turn ON. Back light turns ON? Circuit current flows normally? Go to Item3 No power.
  • Page 14 AVX-P7000CD,AVX-7000 RGB signal for LCD is obtained at Pin-48, Replace Q201 (NJW1300A). Pin-50, and Pin-52 of Q201 (NJW1300A)? Blanking (BLK) signal is obtained at Check CN003 (30-pin flexible connector) and its periphery. Pin-9 to Pin-11 of Q208 (74HC4053)? RGB signal for LCD is obtained at Pin-2 to Check Q208 (74HC4053) and its periphery.
  • Page 15 AVX-P7000CD,AVX-7000 3No power No power F801 (fuse) is broken out? Replace F801. 18.5V is obtained at TP02? If not, the resistance Check 18.5V line to remove short-cir- cuits. (CN003 and its periphery) between TP02 and GND is 100k ohms or more? 7V is obtained at TP03? if not, the resistance Check 7V line to remove short-circuits.
  • Page 16 AVX-P7000CD,AVX-7000 Sync pulses in synchronization with Input signal are Check Q201 (NJW1300A) and replace it. obtained at Pin-62 and Pin-63 of Q201 (NJW1300A)? Check CN003 and LCD. 5No color with Composite signal No color with composite signal Video signal is obtained at Q653 (TR)? Check input flexible cables, Q651 and their periphery.

  • Page 17: Table Of Contents

    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 ELECTRONIC CORPORATION 1999 K-ZZU. APR. 1999 Printed in Japan...

  • Page 18: Safety Information

    AVX-P7000CD - CD Player Service Precautions 2. During disassembly, be sure to turn the power off 1. For pickup unit(CXX1290) handling, please refer since an internal IC might be destroyed when a to"Disassembly"(see page 55). connector is plugged or unplugged. During replacement, handling precautions shall be 3.

  • Page 19: Exploded Views And Parts List

    AVX-P7000CD 2. EXPLODED VIEWS AND PARTS LIST 2.1 PACKING...
  • Page 20 AVX-P7000CD NOTE: - Parts marked by “*”are generally unavailable because they are not in our Master Spare Parts List. ∇ mark on the product are used for disassembly. - Screws adjacent to - PACKING SECTION PARTS LIST Part No. Mark No. Description AVX-P7000CD/UC AVX-P7000CD/EW AVX-P7000CD/ES 1 Carton...
  • Page 21 AVX-P7000CD 2.2 EXTERIOR(1/2)
  • Page 22 AVX-P7000CD EXTERIOR(2/2)
  • Page 23 AVX-P7000CD (1) EXTERIOR SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Screw BMZ26P050FZK 46 IC(IC1) SBX8035-H 2 IC(IC24) PNA4603H00LB 47 Spacer CNM6200 3 Screw BSZ26P040FMC 48 Rack CNV5737 4 Screw BSZ30P040FMC 49 Rack CNV5738 5 Transistor(Q1801,Q1809) 2SD2396 50 Chassis Unit CXB3769...
  • Page 24 AVX-P7000CD Mark No. Description Part No. 91 Cover CNM6470 92 Panel Keyboard Unit See Contrast table(2) 93 Connector(CN1) CKS4054 94 Spacer CNM6272 95 Grille Unit See Contrast table(2) 96 Detach Grille Assy See Contrast table(2) 97 Screw BPZ20P060FZK 98 Button(Detach) See Contrast table(2) 99 Button(+) See Contrast table(2)

  • Page 25: Contrast Table

    AVX-P7000CD (2) CONTRAST TABLE AVX-P7000CD/UC , AVX-P7000CD/EW and AVX-P7000CD/ES are constructed the same except for the following: Part No. Mark No. Description AVX-P7000CD/UC AVX-P7000CD/EW AVX-P7000CD/ES Panel CNS5427 CNS5427 CNS5550 Cord Assy CDE5934 CDE5934 Not used Cord Assy CDE6030 CDE6030 Not Used CWM6430 CWM6431 CWM6430...

  • Page 26: Cd Mechanism Module

    AVX-P7000CD 2.3 CD MECHANISM MODULE...
  • Page 27 AVX-P7000CD - CD MECHANISM MODULE SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Control Unit CWX2350 51 Spring CBH2039 2 Connector(CN701) CKS1968 52 Rack CNV5471 3 Connector(CN802) CKS3477 53 Bracket Unit CXB1674 4 Connector(CN801) CKS3481 54 Screw Unit CXB1676...

  • Page 28: Block Diagram And Schematic Diagram

    AVX-P7000CD 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM MECHANISM FPC UNIT PHOTO FPC UNIT...
  • Page 29 AVX-P7000CD...
  • Page 30 AVX-P7000CD 3.2 SYSTEM MICRO COMPUTER UNIT Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS LIST”. CD MICRO COMPUTER UNIT SYSTEM MICRO COMPUTER CD REGULATOR VDD REGULATOR VIDEO REGU...
  • Page 31 AVX-P7000CD SYSTEM MICRO COMPUTER UNIT V.SEL I.SENS 1K(1/2W) C1818 C1817 DEO REGULATOR MOTOR DRIVER...
  • Page 32 AVX-P7000CD 3.3 CD MICRO COMPUTER UNIT IP-BUS:2.2dBs AUDIO SELECT IP-BUS:2.2dBs S-CD:2.52dBs S-CD:0.22dBs CONTROL UNIT CN701 CD MICRO COMPUTER CN1601 CN1603 CN1602...
  • Page 33 AVX-P7000CD CD MICRO COMUTER UNIT UC,EW model RELAY UNIT CN51 SYNCHRONIZING SEPARATION...

  • Page 34: Encoder Unit

    AVX-P7000CD 3.4 RELAY UNIT AND ENCODER UNIT BACK SENSOR ANGLE SENSOR FX2484 FX2484 10k(B) ENCODER UNIT CN2902 8R2K RELAY UNIT...
  • Page 35 AVX-P7000CD LCD KEYBOARD UNIT CN21 MODULE...
  • Page 36 AVX-P7000CD 3.5 LCD KEYBOARD UNIT LCD KEYBOARD UNIT CINEMA NORMAL FULL ZOOM JUST S21-S23 EW model:CSG1113 CN55 UC,ES model:CSG1112 EW model...
  • Page 37 AVX-P7000CD 3.6 PANEL KEYBOARD UNIT PANEL KEYBOARD UNIT EW model S52 CSN1052 SENSOR SW UC,ES model CN2602 UC,ES model SW UNIT EW model...

  • Page 38: Cd Mechanism Module(Guide Page)

    AVX-P7000CD 3.7 CD MECHANISM MODULE(GUIDE PAGE) Large size SCH diagram PICKUP UNIT (SERVICE) Guide page Detailed page MECHANISM FPC UNIT PHOTO FPC UNIT...
  • Page 39 AVX-P7000CD CONTROL UNIT NOTE 1) . . . CD LSI (AGND Analog, DGND Digital) PGND . . . Actuator, Motor Driver AAGND . . . Audio These GND's are not connected to each other on PCB, though they use same symbols in this schematic. PGND is connected to a chassis by a screw.
  • Page 40 G-a G-b PICKUP UNIT CONTROL UNIT (SERVICE)
  • Page 41 MECHANISM FPC UNIT PHOTO FPC UNIT NOTE 1) NOTE 2) G-a G-b...
  • Page 42 AVX-P7000CD...
  • Page 43 CN2601 AVX-P7000CD...
  • Page 44 AVX-P7000CD Note:1. The encircled numbers denote measuring pointes in the circuit diagram. 2. Reference voltage REFO:2.5V - Waveforms 1 RFO 1 CH1: RFO 1 CH1: RFO 0.5V/div. 0.5µs/div. 1V/div. 1V/div. 0.5ms/div. 0.5ms/div. 2 CH2: MIRR 2 CH2: MIRR Normal mode: play 5V/div.
  • Page 45 AVX-P7000CD 8 CH1: TEY 8 CH1: TEY 0 SIN 0.2V/div. 0.5V/div. 0.5V/div. 0.1s/div. 20ms/div. 5ms/div. 9 CH2: TIN ! CH2: SD 0.2V/div. 0.5V/div. Normal mode: play Normal mode: Play (12cm) → REFO → REFO → REFO → → REFO REFO 0 SIN @ EFM 8 CH1: TEY...
  • Page 46 AVX-P7000CD ( CH1: R OUT 6 CH1: FEY 8 CH1: TEY 0.2V/div. 1V/div. 0.2V/div. 0.2ms/div. 1ms/div. 1ms/div. ) CH2: L OUT 9 CH2: TIN 3 CH2: FIN 1V/div. 0.5V/div. 0.5V/div. Normal mode: Play (1kHz 0dB) Normal mode: During AGC Normal mode: During AGC →...

  • Page 47: Pcb Connection Diagram

    NOTE FOR PCB DIAGRAMS 1. The parts mounted on this PCB Capacitor Connector include all necessary parts for SIDE A several destination. For further information for respective destinations, be sure SIDE B P.C.Board Chip Part to check with the schematic diagram.
  • Page 48 CD MICRO COMPUTER UNIT SIDE A CN701 CN1601 CN1603 CN1602 CN51 IP-BUS IP-BUS SIDE B CD MICRO COMPUTER UNIT...
  • Page 49 AVX-P7000CD 4.3 RELAY UNIT RELAY UNIT SIDE B RELAY UNIT CN2902 SIDE A CN56 LCD MODULE CN21 4.4 ENCODER UNIT ENCODER UNIT CN57...
  • Page 50 LCD KEYBOARD UNIT SIDE A WIDE ANGLE- ANGLE+ SIDE B LCD KEYBOARD UNIT...
  • Page 51 PANEL KEYBOARD UNIT SIDE A CD EJECT BRIGHT- BRIGHT- BRIGHT+ DSEN OPEN/CLOSE RESET SIDE B PANEL KEYBOARD UNIT...

  • Page 52: Cd Mechanism Module

    AVX-P7000CD 4.7 CD MECHANISM MODULE SIDE A CONTROL UNIT...
  • Page 53 AVX-P7000CD SIDE B CONTROL UNIT REFO PICKUP UNIT PICKUP UNIT (SERVICE) CN2601 SPINDLE MOTOR...
  • Page 54 AVX-P7000CD...
  • Page 55 AVX-P7000CD...
  • Page 56 AVX-P7000CD 4.8 SW UNIT...

  • Page 57: Electrical Parts List

    AVX-P7000CD 5. ELECTRICAL PARTS LIST NOTE: - Parts whose parts numbers are omitted are subject to being not supplied. - The part numbers shown below indicate chip components. Chip Resistor RS1/_S___J,RS1/__S___J Chip Capacitor (except for CQS..) CKS.., CCS.., CSZS..=====Circuit Symbol and No.===Part Name Part No.
  • Page 58 AVX-P7000CD =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- 1801 RS1/4S221J 2004 Transistor DTA114EU 1802 RS1/10S911J 2601 Transistor 2SC4081 1803 RS1/16S822J 2602 Transistor DTC114TU 1805 RS1/16S473J 2603 Transistor 2SC4081 1806 RS1/10S272J...
  • Page 59 AVX-P7000CD =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- 2615 RS1/16S102J 2605 CKSRYB103K50 2616 RS1/16S473J 2606 CKSRYB103K50 2617 RS1/16S102J 2607 CCSRCH220J50 2618 RS1/16S473J 2608 CKSRYB102K50 2619 RS1/16S223J 2609 CCSRCH220J50 2620 RS1/16S223J...
  • Page 60 AVX-P7000CD =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- Unit Number : CWM6426(UC,ES model) Unit Number : CWX2350 CWM6427(EW model) Unit Name : Control Unit Unit Name : LCD Keyboard Unit MISCELLANEOUS MISCELLANEOUS UPC2572GS...
  • Page 61 AVX-P7000CD =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S681J Unit Number : RS1/16S681J Unit Name : Photo FPC Unit RS1/16S102J RS1/16S102J Photo-transistor CPT-230S-X RS1/16S0R0J Photo-transistor CPT-230S-X Photo-transistor CPT-230S-X RS1/16S0R0J RS1/16S102J...

  • Page 62: Adjustment

    AVX-P7000CD 6. ADJUSTMENT 6.1 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT • Note : Unlike previous CD mechanism modules the grating angle of the PU unit cannot be adjusted after the PU unit is changed. The PU unit in the CD mechanism module is adjusted on the production line to match the CD mechanism module and is thus the best adjusted PU unit for the CD mechanism module.
  • Page 63 AVX-P7000CD Ech → Xch 20mV/div, AC Grating waveform Fch → Ych 20mV/div, AC 0° 30° 45° 60° 75° 90°...

  • Page 64: General Information

    AVX-P7000CD 7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 TEST MODE - CD Test Mode 1)Precautions • This unit uses a single power supply (+5V) for the • Disc detection during loading and eject operations is regulator. The signal reference potential, therefore, is performed by means of a photo transistor in this connected to REFO(approx.

  • Page 65: Flow Chart

    AVX-P7000CD - Flow Chart ACC,Back-up ON Regulator OFF CD Player Select SOURCE During regulator off, press the 12 key TRACK FUNCTION and the system will be put into the ' " Display new test mode. Regulator ON BAND Power ON TRACK FUNCTION 00 00'00"...

  • Page 66: Test Mode

    AVX-P7000CD 7.2.2 TEST MODE - Error Number Indication The system enters error mode to display the cause of error with a number when the system cannot operate CD or stops operation because of an error. The purpose of this measure is to reduce frequency of calls from users asking help for problems that are caused by incorrect operation by user, as well as to assist analysis and repair in servicing.
  • Page 67 AVX-P7000CD - New Test Mode When S-CD is specified as the source, basically the system plays as normal operation. After setup, the system displays the cause and time (absolute time) of an error if focus search is improper, spindle lock is removed, subcode cannot be read, or sound is skipped.

  • Page 68: Disassembly

    AVX-P7000CD 7.1.2 DISASSEMBLY Removing the Detach Grille Assy (Fig.1) 1. Remove the detach grille assy. Removing the Grille Assy (Fig.1) 1. Remove the two screws. 2. Disengage the stopper eight of the grille assy. 3. Disconnect the connector. Grille Assy Detach Grille Assy Fig.1 Case...
  • Page 69 AVX-P7000CD Removing the CD Micro Computer Unit (Fig.4) 1. Remove the solder at the 2 points marked with Arrow X inthe figure. 2. Straighten the two tabs indicated by Arrow V. 3. Remove the two screws A. 4. Disconnect the three connectors indicated by Arrow Z. CD Micro 5.
  • Page 70 AVX-P7000CD Removing the Relay Unit (Fig.7) 1. Remove the connector B , connector C and connector D. 2. Straighten the two tabs indicated by Arrow (I). Holder 3. Remove the relay unit. Encoder Removing the Angle Motor Section (Fig.7) Unit 1.
  • Page 71 AVX-P7000CD When removing the floating unit, stop the mechanism during playback (to unlock the mechanism). - Removing the damper and frame (Fig.10) - Removing the floating unit (Fig.10) - Removing the clamper arm (Fig.10) Frame A Remove this. Floating unit Frame B damper Fig.10...
  • Page 72 AVX-P7000CD - Removing the Loading motor (Fig.12) Gliss cover Carriage motor Removing the belt Removing the solder Fig.12 - Removing the PU unit (Fig.13) Removing the Guide arm Loading arm Photo FPC unit Removing the flexible PCB Gear cover Gear B Removing Removing the the solder...
  • Page 73 AVX-P7000CD When tighten screw (1), tighten with a torque of 1.8 kg-cm. (Fig.14) PU unit Short pin Install the short pin for protection or the PU unit before removing the flexible PCB from the connector(CN101). Fig.14 - How to hold the CD mechanism module (Fig.15,Fig.16) Do not hold the parts indicated in dark color.
  • Page 74 AVX-P7000CD Cautions on assembling (Fig.17) 1. When installing the display assy in the case, use the reference scale on the surface of the case to set the display assy properly (not slantingly), as shown in the Fig.17. Case Reference scale Reference scale Display Assy Fig.17...

  • Page 75: Pcb Locations

    AVX-P7000CD 7.1.3 PCB LOCATIONS CD MICRO COMPUTER UNIT KEYBOARD RELAY UNIT UNIT SYSTEM MICRO COMPUTER UNIT ENCODER UNIT PANEL LCD MODULE KEYBOARD UNIT SW UNIT CONTROL UNIT PHOTO FPC UNIT MECHANISM FPC UNIT...
  • Page 76 AVX-P7000CD 7.2 PARTS 7.2.1 IC BA6247FP BA00ASFP LB1930M BA7071F OUT1 OUT2 P-GND S-GND...
  • Page 77 AVX-P7000CD - Pin Functions(PE5046B) Pin No. Pin Name Format Function and Operation Focus OK input MIRR Mirror detect input LOCK Spindle lock input AVss A/D GND electric potential Not used EMPH Pre-emphasis output AVREF1 A/D Reference electric potential input Decode IC serial data input Not used TSCK Decode IC serial clock output...

  • Page 78: Brightness Control

    AVX-P7000CD Pin No. Pin Name Format Function and Operation VDSENS VD short sense input TEMP Temperature sense input Not used *PE5046B Format Meaning C MOS IC's marked by* are MOS type. Be careful in handling them because they are very liable to be damaged by electrostatic induction.
  • Page 79 AVX-P7000CD - Pin Functions (PE5038A) Pin No. Pin Name Format Function and Operation Not used AVSS BRIGHT Bright control output DIMMER Dimmer control output AVREF1 D/A converter reference voltage (Connects to VDD) LEDDT Data output for the WIDE MODE indicating LED driver LEDCLK Clock output for the WIDE MODE indicating LED driver LEDLCK...
  • Page 80 AVX-P7000CD Pin No. Pin Name Format Function and Operation VSELIN2 VSEL input 2 REMIN Remote controlling signal input asens ACC sensor input bsens Backup input Not used Oscillator output Oscillator input Connection to grounding circuit Sub-clock terminal TESTIN Test mode AVDD Analog power for A/D converter AVREF0...
  • Page 81 AVX-P7000CD - Pin Functions (BA6797FM) Pin No. Pin Name Function and Operation OUT1-A Driver CH1 output OUT1-B Driver CH1 output PRE-OUT1 CH1 pre-amplifier output IN1(-) CH1 pre-amplifier inverted input IN1(+) CH1 pre-amplifier input REG-B External Tr base connection REG-OUT Fixed voltage output (External Tr collect connection) BIAS-IN Bias input MUTE...

  • Page 82: Mechanism Descriptions

    AVX-P7000CD 7.3 MECHANISM DESCRIPTIONS - Electric conditions - Outlines of the hardwares Sensor signals Drive motors Encoder Discharge (position) motor ANGLEIN: Angle sensing analog sensor Angle raising (angle) motor Sensor signals Sensors (PUSH) Angle detection rotary encoder LIFT SW: End of discharge detecting sensor (“L” End of discharge detecting switch (“L”...

  • Page 83: Storage Operation

    AVX-P7000CD - Discharging operations 1. When the OPEN key or the ACC is turned “ON”(or detach grille installing ), (2 sec. after) the position motor will be activated under the high speed mode. 2. When the longitudinal position sensing switch (PUSH SW)/(LIFT SW) turns H - L, the position motor will be stopped and, at the same time, the angle motor will be activated at high speed.

  • Page 84: Angle Adjustment

    AVX-P7000CD - Angle adjustment 1. For example, from the initial position (about 90°), when the UP key is pressed, the position motor will be activated at high speed for the time during the UP key is being pressed and held. When the UP key has been released, or when a second has passed after the hard-stopper is activated, the system will go under the braking mode.
  • Page 85 AVX-P7000CD - Precautions 1. The angular position will be kept updated while the angle adjusting key is being pressed and held and the last angle will be memorized. 2. When the angular potential does not change toward the expected direction, the system deems it a functional failure to stop the movement at the position.

  • Page 86: Operations And Specifications

    Basic Operation of the CD Player This Product The following diagram shows the display when it is deployed. Track Number Indicator Elapsed Play Time Indicator Display WIDE button Wide mode indicators Disc loading slot ANGLE button Signal Receptor EJECT button BRIGHTNESS OPEN/CLOSE button...

  • Page 87: Connection Diagram

    AVX-P7000CD - CONNECTION DIAGRAM 1. This Product 2. Yellow 5. Fuse holder To terminal always supplied with power regardless of ignition switch position. 6. Fuse resistor 3. Orange To lighting switch terminal. 4. Black (ground) To vehicle (metal) body. Connecting the Power Cord 1.
  • Page 88 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. 501 Orchard Road, #10-00, Lane Wheelock Place, Singapore 238880 C PIONEER ELECTRONIC CORPORATION 1998 K-FES. MAY. 1998 Printed in Japan...

  • Page 89: Circuit Descriptions

    CX-680 1. CIRCUIT DESCRIPTIONS 1.1 Preamplifier (UPC2572GS: IC101) The preamplifier processes pickup output signals to EFM comparator EFM-IN FE-BAL generate signals to be sent to the servo, demodula- envelope AGC-OUT TE-BAL tor, and controller. The preamplifier with built-in C AGC Detection photodetector converts signals from the pickup into intermediate voltage in the pickup.
  • Page 90 CX-680 2) RF amplifier and RF AGC amplifier 4) DFCT (defect) circuit Photodetector outputs (A+C and B+D) are added, am- DFCT signal detects mirror defect in discs, and is out- plified and equalized in IC101, and output to the RFI put from Pin 33.
  • Page 91 CX-680 6) Focus-error amplifier REFO (+2.5V) CONDUCTANCE The system outputs photodetector output (A+C and B+D) as FE signal (A+C-B-D) from Pin 28 via the dif- 20kΩ C114 10kΩ 390pF ference amplifier, then via the error amplifier. 9.3kΩ Low-frequency components of voltage FEY is: 10kΩ...
  • Page 92 CX-680 9) MIRR (mirror) circuit UPC2572GS MIRR signal shows ON and OFF track information. Detection The signal is output from Pin 31. (Peak) – (Bottom) The status of MIRR signal is as follows: RFIN Peak Laser beam ON track: MIRR = “L” MIRR Laser beam OFF track: MIRR = “H”...
  • Page 93 CX-680 1.2 Servo (UPD63702AGF: IC201) The servo consists of mainly two parts. The first part is the servo processing unit to equalize error signals and control track jump, carriage move, in focus, etc. The second part is the signal processing unit to per- form data decoding, error correction, and interpola- tion.
  • Page 94 CX-680 When the conditions mentioned above are satisfied and focus is closed, the XSO terminal changes from “H” to “L.” Then, the microcomputer starts monitor- ing RFOK signal through L.P.F after 40 ms. REFO If the system judges RFOK signal as “L,” the micro- computer takes actions, including protection.

  • Page 95: Track Jump

    CX-680 2) Tracking servo system IC 201 UPD63702AGF The main equalizer of tracking servo is located in the IC301 UPD63702AGF. Fig. 11 shows block diagram of the TRACKING BA6797FM ERROR tracking servo. DIGITAL EQUALIZER LENS CONTROL R304 JUMP 20kΩ PARAMETERS R303 30kΩ...

  • Page 96: Brake Circuit

    CX-680 b) Brake circuit Servo withdrawal will deteriorate during setting and track jump. Thus, the system uses the brake circuit to provide stable withdrawal to servo loop. The brake circuit detects the direction of lens move- ment, and outputs only drive signal in the opposite direction from the lens movement.
  • Page 97 CX-680 3) Carriage servo system Output from low-frequency components (lens posi- tion information) of the tracking equalizer is input to IC 201 UPD63702AGF the carriage equalizer by the carriage servo. After IC301 BA6797FM obtaining a certain gain, the system outputs drive FROM DIGITAL TRACK...
  • Page 98 CX-680 4) Spindle servo system The spindle servo has the following modes: IC 201 UPD63702AGF (1) Kick mode: To be used for accelerating disc rota- IC301 tion during setting. SPEED and BA6797FM PHASE ERROR SIGNAL (2) Offset mode: a) To be used after completion of kick until com- DIGITAL pletion of spindle lock during setting.
  • Page 99 CX-680 1.3 Automatic Adjustment Function Constant RF level System With this system, all circuit adjustments are automat- microcomputer ically performed by using the preamplifier Corrected Transfer RF signal voltage of amount (UPC2572GS) and servo LSI (UPD63702AGF). All ad- output of correction circuit justments are automatically performed whenever TE.O, T.BAL...
  • Page 100 CX-680 5) Auto gain control (AGC) 7) Display of coefficients of adjustment results AGC adjustment is already used in the CD modules of Results of automatic adjustments can be displayed in the previous generation. This function automatically Test mode for confirmation. Display of coefficients in adjusts servo loop gain of focus and tracking.
  • Page 101 CX-680 1.4 Power Supply and Loading Unit The power supply of the system uses VD (8.3 V) sup- CN701 plied from the mother board, and generates power supply VM (7.6 V) for the loading motor driver and 5 V Q102 Circuit RegIC power supply (7.6 V).

  • Page 102: Mechanism Descriptions

    CX-680 2. MECHANISM DESCRIPTIONS - Disc loading 4. The clamper arm has the disc centering mecha- 1. Three phototransistors are provided in front and nism to determine disc size and clamp the disc to rear of the rubber roller for disc transfer. Light is the center of the spindle motor.
  • Page 103 CX-680 Detection arm - Clamp operation When the rack lever in contact with the detection lever is driven by the loading motor, the rack lever engages Detection lever with the gear to move the clamp UP lever, mechanical lock arm, and mechanical lock lever toward the direc- Rack lever tions indicated with arrows in Fig.
  • Page 104 CX-680 3. DISASSEMBLY When removing the floating unit, stop the mechanism during playback (to unlock the mechanism). - Removing the damper and frame - Removing the floating unit Frame A Remove this. Floating unit Frame B damper Fig. 23 - Removing the clamper arm - Removing the spindle motor clamper arm Spindle motor...
  • Page 105 CX-680 - Removing the Carriage Motor Gliss cover Carriage motor Removing the belt Removing the solder Fig. 25 - Removing the Loading motor Removing the Loading arm Guide arm Photo FPC unit R e m o v i n g the flexible Gear cover Removing...
  • Page 106 CX-680 - Removing the PU unit When tighten screw (1), tighten with a torque of 1.8 kg-cm. PU unit Short pin Install the short pin for protection of the PU unit before removing the flexible PCB from the connec- tor (CN101). Fig.

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