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Aiwa 6ZG-1 Service Manual

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SERVICE MANUAL
CD MECHANISM
6ZG-1
BASIC CD MECHANISM :
TYPE
YSDFNSHCM
VOS1NDSM
YVOS1NDM
YSDNSHM
SDFNSHM
S/M Code No. 09-994-326-2N2
English
3ZG-2 E1

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  • Page 1 6ZG-1 English SERVICE MANUAL CD MECHANISM BASIC CD MECHANISM : 3ZG-2 E1 TYPE YSDFNSHCM VOS1NDSM YVOS1NDM YSDNSHM SDFNSHM S/M Code No. 09-994-326-2N2...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS PROTECTION OF EYES FROM LASER BEAM DURING SERVICING ..........3 Precaution to replace Optical block......................3 DISASSEMBLY INSTRUCTIONS ......................4-6 ELECTRICAL MAIN PARTS LIST ....................... 7-9 TRANSISTOR ILLUSTRATION ......................10 BLOCK DIAGRAM-1 (YSDFNSHCM, YSDNSHM, SDFNSHM) ............. 11, 12 BLOCK DIAGRAM-2 (VOS1NDSM, YVOS1NDM) .................

  • Page 3: Protection Of Eyes From Laser Beam During Servicing

    PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs laser. Therefore, be sure to follow carefully the CAUTION instructions below when servicing. Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous WARNING! radiation exposure.

  • Page 4: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1. How to replace PICK UP. Open the TRAY. PICKUP Push the stopper to arrow direction and release half of the SHAFT SLED. Turn GEAR MAIN CAM to the counterclockwise (arrow “a”) direction, and lift up CD mechanism. (Fig-1) Remove SHAFT SLED.
  • Page 5 3. The disassemble and reassemble the TRAY 3-1. Disassembling procedure. Push the PLATE GEAR’S Boss at the bottom part of CHAS MECHA strongly to the outside (arrow “b” direction). (Fig-3) (Confirm that TRAY appears a little in the front.) BOSS Draw TRAY to the open position.
  • Page 6 4. How to reassemble the TURN TABLE. (Fig-7) Push LEVER TT in the direction of “C”, and put in the TURN TABLE 5CD. (Fig-7) After reassembly, one of the TURN TABLE DISC TRAY (can be either one of the five disc trays) must be aligned with TURN TABLE 5CD.

  • Page 7: Electrical Main Parts List

    ELECTRICAL MAIN PARTS LIST REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C101 87-010-263-040 CAP,E 100-10 C102 87-010-178-080 CHIP CAP 1000P 87-A20-547-010 C-IC,CXA1992AR<EXCEPT YSDFNSHCM> C103 87-010-550-040 CAP,E 100-6.3 GAS 87-A20-919-040 C-IC,BA5915FP<YVOS1NDM,VOS1NDSM> C104 87-010-182-080 C-CAP,S 2200P-50 B 87-A20-917-010 C-IC,CXD2540Q-1/2 C105...
  • Page 8 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C508 87-016-459-040 CAP,E 470-10 SMG C121 87-010-596-080 CAP, S 0.047-16 C509 87-010-196-080 CHIP CAPACITOR,0.1-25 C123 87-016-669-080 C-CAP,S 0.1-25 K B C510 87-010-196-080 CHIP CAPACITOR,0.1-25 C125 87-010-198-080 CAP, CHIP 0.022 C601 87-010-197-080 CAP, CHIP 0.01 DM...

  • Page 9: Transistor Illustration

    REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION • Regarding connectors, they are not stocked as they are not the initial order items. The connectors are available after they are supplied from connector manufacturers upon the order is received. C815 87-010-318-080 C-CAP,S 47P-50 CH...

  • Page 10: Block Diagram-1 (Ysdfnshcm, Ysdnshm, Sdfnshm)

    BLOCK DIAGRAM-1 (YSDFNSHCM, YSDNSHM, SDFNSHM)

  • Page 11: Block Diagram-2 (Vos1Ndsm, Yvos1Ndm)

    BLOCK DIAGRAM-2 (VOS1NDSM, YVOS1NDM)

  • Page 12: Wiring-1 (Ysdfnshcm, Ysdnshm, Sdfnshm)

    WIRING-1 (YSDFNSHCM, YSDNSHM, SDFNSHM) PIN3 S601 OPEN DIGITAL (OPTICAL)

  • Page 13: Schematic Diagram-1 (Ysdfnshcm, Ysdnshm, Sdfnshm)

    SCHEMATIC DIAGRAM-1 (YSDFNSHCM, YSDNSHM, SDFNSHM)

  • Page 14: Wiring-2 (Vos1Ndsm, Yvos1Ndm)

    WIRING-2 (VOS1NDSM, YVOS1NDM)

  • Page 16: Schematic Diagram-2 (Vos1Ndsm, Yvos1Ndm 1/2)

    SCHEMATIC DIAGRAM-2 (VOS1NDSM, YVOS1NDM 1/2)

  • Page 17: Schematic Diagram-3 (Vos1Ndsm, Yvos1Ndm 2/2)

    SCHEMATIC DIAGRAM-3 (VOS1NDSM, YVOS1NDM 2/2)

  • Page 18: Wave Form

    WIRING-3 WAVE FORM SYSTEM CLOCK VOLT/DIV: 2V TRACKING TIME/DIV: 1mS f=16.9344MHz TIME/DIV: 0.1µS 4.4V FOCUS SEARCH VOLT/DIV: 500mV TIME/DIV: 0.5µS 1.3±0.2V FOCUS VOLT/DIV: 200mV TIME/DIV: 2mS...
  • Page 19 IC905 Pin (XTL20) VOLT/DIV: 2V IC851 Pin = (FLDOUT) VOLT/DIV: 2V TIME/DIV: 10nS TIME/DIV: 10mS IC905 Pin 2 (XTL00) VOLT/DIV: 2V IC851 Pin + (OSDCLK) VOLT/DIV: 2V TIME/DIV: 10nS TIME/DIV: 50nS IC906 Pin 6 IC801 Pin 3 (CKO) VOLT/DIV: 2V VOLT/DIV: 2V TIME/DIV: 20nS TIME/DIV: 20nS...
  • Page 20 IC952 Pin 9 (A8) VOLT/DIV: 2V IC851 Pin (PAL60) VOLT/DIV: 200mV TIME/DIV: 1mS PAL DISC PAL TIME/DIV: 10µS IC931 Pin % (VBLK) VOLT/DIV: 2V IC851 Pin (PAL60) VOLT/DIV: 200mV TIME/DIV: 20µS NTSC DISC PAL AUTO TIME/DIV: 10µS _______________ IC931 Pin * (VB) IC851 Pin &...
  • Page 21 _______________ ______________ IC851 Pin & (H SYNC) VOLT/DIV: 2V IC851 Pin * (V SYNC) VOLT/DIV: 2V TIME/DIV: 50µS TIME/DIV: 10mS ______________ IC851 Pin * (V SYNC) VOLT/DIV: 2V CN6 Pin ! (O-DISH, SENS) VOLT/DIV: 2V NTSC TIME/DIV: 10mS TIME/DIV: 200mS ______________ IC851 Pin * (V SYNC) VOLT/DIV: 2V...

  • Page 22: Ic Description

    IC DESCRIPTION IC, CXD2589Q Pin No. Pin Name Description 1, 20, 45, 60 — GND. LMUT Lch-“0” detect flag. RMUT Rch-“0” detect flag. SQCK Clock input for SQSO read out. SQSO SubQ 80 bit serial output. SENS SENS signal output to CPU. DATA Serial data input from CPU.
  • Page 23 Pin No. Pin Name Description D/A interface bit clock output. BCKI D/A interface bit clock input. XUGF XUGF output, MNT1 or RPCK output by switching command. XPCK XPLCK output, MNT0 output by switching command. GFS output, MNT3 or XRAOF output by switching command. C2PO C2PO output, GTOP output by switching command.
  • Page 24 IC, CXA1992AR Pin No. Pin Name Description Output terminal for focus error amplifier. Internally connected to window comparator input for bias condition. Input terminal for focus error. FDFCT Capacitor connection terminal for time constant used when there is defect. This pin is connected to GND via capacitor when high frequency gain of the focus servo is attenuated.
  • Page 25 Pin No. Pin Name Description RF_I Input terminal by capacity combination of RF summing amplifier. RF_O Output terminal of RF summing amplifier. Checkpoint of Eye pattern. Anti-reverse input terminal for RF summing amplifier. RF_M The gain of RF amplifier is decided by the connection resistance between RF_M and RFO terminals.
  • Page 26 IC, CXD2540Q Pin No. Pin Name Description Focus OK input. Used for SENS output and the servo auto sequencer. Spindle motor output filter switching output. Spindle motor on/off control output. Spindle motor servo control. High, when sampled value of GFS at 460Hz is high. LOCK Low, when sampled value of GFS at 460Hz is low by 8 times successively.
  • Page 27 Pin No. Pin Name Description DA11 DA11 output when PSSL=1. GTOP output when PSSL=0. DA10 DA10 output when PSSL=1. XUGF output when PSSL=0. DA09 DA09 output when PSSL=1. XPLCK output when PSSL=0. DA08 DA08 output when PSSL=1. GFS output when PSSL=0. DA07 DA07 output when PSSL=1.
  • Page 28 Pin No. Pin Name Description DATO Serial data output to SSP. XLTO Serial data latch output to SSP. Latched at the falling edge. CLKO Serial data transfer clock output to SSP. Mirror signal input. Used when the number of tracks is 128 or more for the 2N-track MIRR jump and M track move of the auto sequencer.
  • Page 29 IC, SM5878M Pin No. Pin Name Description MODE = H: Soft mute ON/OFF terminal. (Mute at H). MUTE MODE = L: Attenuator level DOWN/UP terminal. (DOWN at H). DEEM De-emphasis ON/OFF terminal. (De-emphasis ON at H). Oscillator clock output. (16.9344 MHz). DVSS —...
  • Page 30 IC, CXD1856R Pin No. Pin Name Description — GND. Video decoder master clock. Input the clock signal to the XTL0I or connect an 2, 3 XTL0O, XTL0I external oscillator between XTL0I and XTL 0O. The recommend frequency is 27 MHz, 28.3636 MHz (NTSC 8fs) or 65.4686 MHz (PAL 8fs). —...
  • Page 31 Pin No. Pin Name Description — GND. OSD enable signal terminal. Polarity to enable the OSD can be changed by setting the OSDEN register. OSD data input terminal. The color that is registered in the color table and specified 57-59 OSDB, OSDG, OSDR by the three inputs (3 bits), is output when the signal that is input to the OSDEN terminal is in the enable state.
  • Page 32 Pin No. Pin Name Description This terminal is used for the two signals of the composite blanking signal (CBLNK) and the fsc signal. Use of this terminal is determined by the register setting. When set to CBLNK, this terminal is used as output terminal when the internal sync CBLNK/FSC generator is used, and is used as input terminal when the internal sync generator is not used.
  • Page 33 Pin No. Pin Name Description This is the interrupt request signal output terminal. The pull up resistor is required XHIRQ since this terminal operates in the open drain configuration. This is the hardware reset signal input terminal. All operations are initialized when XRST this terminal is set to “L”.
  • Page 34 IC, RL5C293 Pin No. Pin Name Description Charge pump output/VCO input terminal (Connect an external capacitor for loop filter, VCOIN to this terminal). 2, 19, 39, 59 — Digital ground. Video mode selection control terminal (LVTTL level). NTSC mode when PALMODE PALMODE = 0.
  • Page 35 Pin No. Pin Name Description Internal trap filter control terminal (LVTTL level). Trap filter display is disabled when TRAPFEN TRAPFEN = 0. Trap filter is enabled when TRAPFEN = 1. (This terminal has the pull- up function). The G data or Y data input terminal (LVTTL level). The data input range is from 16 to 22-29 G7-G0 235 or from 0 to 255 in the case of the G data (as controlled by the DICNT terminal),...
  • Page 36 Pin No. Pin Name Description The OSD background video control terminal. (LVTTL level). This input signal sampled by PXCLK and displays the data that is supplied from the RGB input terminal when VSW = 0, and displays the data that is supplied from the OSCD 0-2 input terminal when VSW = 1.
  • Page 37 IC, CXP84548-112Q Pin No. Pin Name Description CLV-W Fixed to CLV-W: 1, CLV-N. HSTSTP Cause of STOP. 1: STOP by the stop request from the host. DISC type. 1: When no in the VCD DISC XRST SSP/DSP reset output. Reset at “L”. XHRST CXD1856 reset output.
  • Page 38 Pin No. Pin Name Description HALT HALT input. 1: HALT detected (A/D conversion value is 80 H or higher). Pick up inside switch input. “L” when INSIDE is detected. EMPH Emphasis input. ON only (CD-DA) at “H”. VMODE NTSC/PAL AUTO/PAL selection. (Analog input). O-BUSY Busy input to host microprocessor.

  • Page 39: Ic Block Diagram

    IC BLOCK DIAGRAM IC, TA7291S STOP BRAKE : HI IMPEDANCE NOTE : INPUT “H” ACTIVE PROTECTOR CIRCUIT (TSD) IC, BA6897...
  • Page 40 IC, SN74LS245APW IC, M5291FP IC, BA5915 6.65K 6.65K 6.65K 6.65K MUTE T.S.D: Thermal shut-down Resistors are in units of Ω.
  • Page 41 IC, BU2874AFV CYCLE DETECTOR CIRCUIT V. SYNC SEPARATOR CIRCUIT VIDEO SIGNAL BLUE-BACK VIDEO OUTPUT ANALOG SYNTHESIZER SWITCH CLAMP RAM WRITE CIRCUIT ADDRESS COUNTER DATA SELECTOR CHARACTER CHARACTER HIGH-LIGHT DATA COMPOSITE SYNC 6BITS 288WORDS SEPARATOR 1BIT*288 WORDS CIRCUIT CHARACTER GENERATOR 12*18 BITS 256 WORDS...

  • Page 42: Test Mode

    TEST MODE < How to Enter the Test Mode > Pressing the [E] key decreases the track number to -1. Pressing the [F] key increases the track number to +1. While pressing the PROGRAM key, insert the AC power Pressing OPEN/CLOSE key opens or closes the tray. cord to AC wall outlet.
  • Page 43 1. How to Activate CD Test Mode 2. How to Cancel CD Test Mode Insert the AC plug while pressing the function CD button. Either one of the following operations will cancel the CD test FL display tubes will show the “start mode” display mode.

  • Page 44: Mechanical Exploded View 1/1

    MECHANICAL EXPLODED VIEW 1/1 P.C.B P.C.B P.C.B P.C.B 3ZG-2 E2...

  • Page 45: Mechanical Parts List 1/1

    MECHANICAL PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 86-ZG1-001-310 TRAY,5CD 30 83-ZG3-602-010 RING,MAG<YVOS1NDM,VOS1NDSM> 2 84-ZG1-267-010 PULLEY,LOAD MO 8 30 84-ZG1-300-010 MAGNET,CLAMPER 4P 3 87-A90-036-010 MOT ASSY,RF-300CA-11 <EXCEPT YVOS1NDM,VOS1NDSM> 4 86-ZG1-228-110 GEAR,TT-B 31 86-ZG1-215-010 HLDR,CHUCK 5 86-ZG1-227-110...

  • Page 46: Cd Mechanism Exploded View 1/1

    CD MECHANISM EXPLODED VIEW 1/1 (3ZG-2 E2) DRIVE C.B CD MECHANISM PARTS LIST 1/1 (3ZG-2 E2) REF. NO PART NO. KANRI DESCRIPTION 1 83-ZG2-243-110 CHAS ASSY,SHT 2 83-ZG2-235-010 GEAR,A3 3 83-ZG2-205-210 GEAR,B 4 83-ZG2-236-010 GEAR MOTOR 3 5 83-ZG2-240-010 SHAFT,SLIDE 3 6 87-A90-836-010 PICKUP,KSS-213F 8 83-ZG2-233-010...

  • Page 47: Reference Name List

    REFERENCE NAME LIST ELECTRICAL SECTION MECHANICAL SECTION DESCRIPTION REFERENCE NAME DESCRIPTION REFERENCE NAME ANTENNAS ADHESHIVE SHEET ADHESHIVE CHIP AZIMUTH C-CAP CAP, CHIP BAR-ANT BAR-ANTENNA C-CAP TN CAP, CHIP TANTALUM BATTERY C-COIL COIL, CHIP BATT BATTERY C-DI DIODE, CHIP BEARING C-DIODE DIODE, CHIP BUTTON C-FET...
  • Page 48 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 Printed in Singapore 931261...

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