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Panasonic SC-HC20GA Service Manual

Compact stereo system
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TABLE OF CONTENTS

1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.2. Before Repair and Adjustment ------------------------- 4
1.3. Caution For Fuse Replacement------------------------ 4
1.4. Protection Circuitry ---------------------------------------- 4
1.5. Safety Part Information----------------------------------- 4
2 Warning -------------------------------------------------------------- 6
2.2. Precaution of Laser Diode------------------------------- 7
3 Service Navigation ----------------------------------------------10
3.1. Service Information --------------------------------------10
4 Specifications ----------------------------------------------------11
Model No.
Product Color: (K)...Black Type
PAGE
Operations ------------------------------------------------- 12
6 Operating Instructions ---------------------------------------- 13
6.1. Connections ----------------------------------------------- 13
6.2. Disc operations ------------------------------------------- 13
6.3. Notes on CD-R and CD-RW -------------------------- 14
6.4. External unit (iPod or iPhone)------------------------- 14
7.1. Self Diagnostic Mode ----------------------------------- 15
7.3. Entering Doctor Mode----------------------------------- 17
8 Service Fixture & Tools --------------------------------------- 21
9.1. Disassembly flow chart --------------------------------- 23
9.2. Types of Screws------------------------------------------ 24
9.3. Main Parts Location Diagram ------------------------- 25
© Panasonic Corporation 2010. All rights reserved.
Unauthorized copying and distribution is a violation of
law.
Compact Stereo System
SC-HC20GA
SC-HC20GN
PSG1003030CE
PAGE

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Summary of Contents for Panasonic SC-HC20GA

  • Page 1: Table Of Contents

    9.1. Disassembly flow chart --------------------------------- 23 5 Location of Controls and Components ------------------12 9.2. Types of Screws------------------------------------------ 24 9.3. Main Parts Location Diagram ------------------------- 25 © Panasonic Corporation 2010. All rights reserved. Unauthorized copying and distribution is a violation of law.
  • Page 2 9.4. Disassembly of Stand Unit ----------------------------- 26 17.4. MAIN CIRCUIT (3/4) ------------------------------------ 88 9.5. Disassembly of iPod/iPhone P.C.B. ----------------- 26 17.5. MAIN CIRCUIT (4/4) ------------------------------------ 89 9.6. Disassembly of Sub Rear Panel --------------------- 28 17.6. PANEL CIRCUIT----------------------------------------- 90 9.7. Disassembly of Docking Tub and Tub Cover ----- 29 17.7.

  • Page 3: Safety Precautions

    1 Safety Precautions 1.1. General Guidelines 1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

  • Page 4: Before Repair And Adjustment

    1.2. Before Repair and Adjustment Disconnect AC power, discharge unit AC Capacitors as such C702, C710, C725, C727 and C728 through a 10W, 1W resistor to ground. Caution : DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices. After repairs are completed, restore power gradually using a variac, to avoid overcurrent.

  • Page 5: Safety Part Information

    1.5. Safety Part Information Safety Parts List: There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic Diagrams, Exploded View & Replacement Parts List. It is essential that these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire or other hazards.

  • Page 6: Warning

    2 Warning 2.1. Prevention of Electro Static Discharge (ESD) to Electrostatically Sensi- tive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec- trostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip”...

  • Page 7: Precaution Of Laser Diode

    2.2. Precaution of Laser Diode CAUTION! THIS PRODUCT UTILIZES A LASER. USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. Caution: This product utilizes a laser diode with the unit turned "on", invisible laser radiation is emitted from the pickup lens. Wavelength: 785 nm (CD) Maximum output radiation power from pickup: 100 μW/VDE Laser radiation from the pickup unit is safety level, but be sure the followings:...

  • Page 8: Service Caution Based On Legal Restrictions

    2.3. Service caution based on Legal restrictions 2.3.1. General description about Lead Free Solder (PbF) The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this equipment in considering the globally environmental conservation. The normal solder is the alloy of tin (Sn) and lead (Pb).

  • Page 9: Handling Precaution For Traverse Unit

    2.4. Handling Precaution for Traverse Unit The laser diode in the optical pickup unit may break down due to static electricity of clothes or human body. Special care must be taken avoid caution to electrostatic breakdown when servicing and handling the laser diode in the traverse unit. Cautions to Be Taken in Handling the Optical Pickup Unit 2.4.1.

  • Page 10: Service Navigation

    3 Service Navigation 3.1. Service Information This service manual contains technical information which will allow service personnel’s to understand and service this model. Please place orders using the parts list and not the drawing reference numbers. If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service manual.

  • Page 11: Specifications

    4 Specifications Amplifier Section RMS Output Power Stereo Mode 5 W per channel (6 Ω), 1 kHz, Front Ch (both ch driven) 10 % THD PMPO output power (For GA Only) 95 W Phone jack Terminal Stereo, 3.5 mm jack Output level (CD, 1 kHz, -20 dB) max.

  • Page 12: Location Of Controls And Components

    5 Location of Controls and Components 5.1. Main Unit & Remote Control Key Button Operations...

  • Page 13: Operating Instructions

    6 Operating Instructions 6.1. Connections 6.2. Disc operations...

  • Page 14: Notes On Cd-R And Cd-Rw

    6.3. Notes on CD-R and CD-RW 6.4. External unit (iPod or iPhone)

  • Page 15: Self Diagnostic And Doctor Mode Setting

    7 Self Diagnostic and Doctor Mode Setting This unit is equipped with features of self diagnostic & doctor mode setting for checking the functions & reliability. 7.1. Self Diagnostic Mode Here is the procedures to enter into Self Diagnostic Mode. Step 1 : Turn on the unit, and then press and hold [ ] button for 2 seconds follow by [ ] on the unit.

  • Page 16: Self Diagnostic Function Error Code

    7.2. Self Diagnostic Function Error Code 7.2.1. CD Mechanism Error Code Table Error Code Diagnostic Contents Description of error Automatic FL Display Remarks CD H15 CD Open Abnormal During operation Press [ ] on main unit for POS_SW_R On fail to be next error.

  • Page 17: Entering Doctor Mode

    7.3. Entering Doctor Mode Here is the procedures to enter into Doctor Mode. Step 1 : Turn on the unit, and then pressing and holding [ ] on main unit in order while press [4] and [7] on the remote control. Step 2 : The display show as follow.
  • Page 18 7.3.2. Doctor Mode Table 2 Item Key Operation FL Display Mode Name Description Front Key FL Display Test To check the FL segments In Doctor Mode: display (All segments will 1. Press [1] button on remote con- light up) trol. To cancel, press [0] button on remote control.
  • Page 19 7.3.3. Doctor Mode Table 3 Item FL Display Key Operation Mode Name Description Front Key Cold Start To activate cold start upon In Doctor Mode: next AC power up. 1. Press [SLEEP] button on remote control. To exit Doctor Mode, press button The [NO DISC] display will appear after 3s, on main unit or remote control.

  • Page 20: Sales Demonstration Lock Function Mode

    7.4. Sales Demonstration Lock Function Mode 7.4.1. Setting Here is the procedures to enter into Sales Demonstration Lock. Step 1 : Turn on the unit. Step 2 : Select to any mode function, press and hold [ ] key and follow by [ ] key.

  • Page 21: Service Fixture & Tools

    8 Service Fixture & Tools Prepare service tools before process service position. Service Tools Remarks Main P.C.B. (CN807) - CD Servo P.C.B. (CN7002) REEX1182 (22P FFC)

  • Page 22: Disassembly And Assembly Instructions

    9 Disassembly and Assembly Instructions Caution Note: • This section describes the disassembly and/or assembly procedures for all major printed circuit boards & main compo- nents for the unit. (You may refer to the section of “Main components and P.C.B Locations” as described in the service manual) •...

  • Page 23: Disassembly Flow Chart

    9.1. Disassembly flow chart The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the ser- vicing. To assemble the unit, reverse the steps shown in the chart below.

  • Page 24: Types Of Screws

    9.2. Types of Screws...

  • Page 25: Main Parts Location Diagram

    9.3. Main Parts Location Diagram...

  • Page 26: Disassembly Of Stand Unit

    9.4. Disassembly of Stand Unit 9.5. Disassembly of iPod/iPhone P.C.B. Step 1 : Remove 2 screws. • Refer to “Disassembly of Stand Unit” Step 2 : Lift up the stand unit as arrow shown. Caution : During assembling, ensure the stand unit is Step 1 : Press to open the iPod assembly.
  • Page 27 Step 3 : Lift up Docking Cover as arrow (1) and (2) shown to Step 4 : Flip iPod/iPhone P.C.B.. remove it. Caution : During assembling, ensure that the iPod/iPhone P.C.B. is properly seated onto the 3 locators. Caution : During assembling of Docking Cover, ensure it is Step 5 : Detach 15P FFC at the connector (CN1002) on iPod/ fixed properly.

  • Page 28: Disassembly Of Sub Rear Panel

    9.6. Disassembly of Sub Rear Panel Caution 1 : During assembling, ensure the Sub Rear Panel is properly slot into the holes. • Refer to "Disassembly of Stand Unit” • Refer to "Disassembly of iPod/iPhone P.C.B." Note : Ensure the iPod is closed properly Step 1 : Press to lift up the Sub Rear Panel.

  • Page 29: Disassembly Of Docking Tub And Tub Cover

    9.7. Disassembly of Docking Tub Step 2 : Release Spring from the docking tub hole as arrow shown. and Tub Cover • Refer to "Disassembly of Stand Unit” • Refer to "Disassembly of iPod/iPhone P.C.B." • Refer to "Disassembly of Sub Rear Panel" 9.7.1.
  • Page 30 9.7.2. Disassembly of Tub Cover Step 3 : Remove Spring as arrow shown. Caution : Keep springs in the safe place and place them • Refer to "Disassembly of Docking Tub” back during assembling. Step 1 : Release 2 Guides. Step 2 : Remove Tub Cover.

  • Page 31: Disassembly Of Tuner P.c.b

    9.8. Disassembly of Tuner P.C.B. Caution : Ensure the 9P FFC (CN51) wire is dressed as dia- gram shown. • Refer to "Disassembly of Stand Unit” • Refer to "Disassembly of iPod/iPhone P.C.B." • Refer to "Disassembly of Sub Rear Panel" Step 1 : Remove 1 screw.

  • Page 32: Disassembly Of Smps P.c.b

    9.9. Disassembly of SMPS P.C.B. Step 3 : Desolder 8P cable at the connector (CN905) on the SMPS P.C.B.. • Refer to "Disassembly of Stand Unit” Step 4 : Remove 2 screws. • Refer to "Disassembly of iPod/iPhone P.C.B." Step 5 : Remove SMPS P.C.B.. •...

  • Page 33: Replacement Of Switching Regulator Ic (Ic702)

    9.10. Replacement of Switching Reg- Step 3 : Remove the Switching Regulator IC (IC702). ulator IC (IC702) • Refer to "Disassembly of SMPS P.C.B." 9.10.1. Disassembly of Switching Regula- tor IC (IC702) Caution : Handle the heatsink unit and P.C.B. with caution due to its high temperature after prolonged use.

  • Page 34: Replacement Of Diode (D702)

    9.11. Replacement of Diode (D702) 9.10.2. Assembly of Switching Regulator IC (IC702) • Refer to "Disassembly of SMPS P.C.B." 9.11.1. Disassembly of Diode (D702) Step 1 : Apply grease to the heatsink unit. Step 2 : Install the Switching Regulator IC (IC702) onto SMPS Caution : Handle the heatsink unit and P.C.B.
  • Page 35 9.11.2. Assembly of Diode (D702) Step 3 : Remove the Diode (D702). Step 1 : Apply grease to the heatsink unit. Step 2 : Install the Diode (D702) onto SMPS P.C.B.. Step 3 : Fix the Diode (D702) onto the heatsink unit with 1 screws.

  • Page 36: Disassembly Of Net Frame Unit

    9.12. Disassembly of Net Frame Unit Caution : During assembling of Net Frame Unit (L), ensure it is fixed properly. 9.12.1. Disassembly of Net Frame unit (L) Step 1 : Insert a steel rule in between the Net Frame Unit (L) gently to release the 4 bosses in order as arrows shown.
  • Page 37 9.12.2. Disassembly of Net Frame unit (R) Caution : During assembling of Net Frame Unit (R), ensure it is fixed properly. Step 3 : Insert a steel rule in between the Net Frame Unit (R) gently to release the 4 bosses in order as arrows shown. Step 4 : Remove Net Frame Unit (R) as arrow shown.

  • Page 38: Disassembly Of Front Cabinet Unit

    9.13. Disassembly of Front Cabinet Step 3 : Remove 6 screws. unit • Refer to "Disassembly of Stand Unit” • Refer to "Disassembly of Net Frame Unit” Step 1 : Remove 8 screws. Step 4 : Lift up the Front Cabinet Unit as arrow shown. Step 2 : Remove 8 screws.

  • Page 39: Disassembly Of Motor P.c.b., Bridge 1 P.c.b. & Position Switch P.c.b

    9.14. Disassembly of Motor P.C.B., Step 5 : Detach 6P wire at the connector (P101) on Main P.C.B.. Bridge 1 P.C.B. & Position Step 6 : Remove Front Cabinet Unit. Switch P.C.B. • Refer to "Disassembly of Stand Unit” • Refer to "Disassembly of Net Frame Unit” •...

  • Page 40: Disassembly Of Motor Assembly

    9.15. Disassembly of Motor Assem- Step 5 : Release 1 catch. Step 6 : Remove Position Switch P.C.B. as arrow shown. Step 7 : Remove Motor Assembly. Caution : During assembling of Position Switch P.C.B., • Refer to "Disassembly of Motor P.C.B., Bridge 1 P.C.B. & ensure the P.C.B.
  • Page 41 Step 3 : Remove Gear Fixture. Step 5 : Remove Belt. Step 6 : Remove Belt Pulley. Step 4 : Remove Middle Gear. Step 7 : Remove 2 screws. Step 8 : Remove Motor.

  • Page 42: Replacement Of Cd Door Ornament

    9.16. Replacement of CD Door Orna- 9.16.2. Assembly of CD Door Ornament ment Step 1 : Align the CD Door Ornament onto the CD Door Base • Refer to "Disassembly of Stand Unit” with the bottom end positioned at the dotted line •...

  • Page 43: Replacement Of Cd Door Base

    9.17. Replacement of CD Door Base Step 2 : Slightly lift up the CD Door Base. Step 3 : Slide the CD Door Base towards to the left. • Refer to "Disassembly of Stand Unit” • Refer to "Disassembly of Net Frame Unit” •...
  • Page 44 9.17.2. Assembly of CD Door Base Step 4 : Push the CD Door Base upwards. Step 5 : Lift up and remove the CD Door Base. Caution : Ensure that the 2 catch are inserted into the respective slots of CD Door Base. Step 1 : Place the CD Door Base onto Front Cabinet.

  • Page 45: Replacement Of Door Shaft & Cd Door Slider Bottom

    9.18. Replacement of Door Shaft & Step 3 : Place CD Door Base Onto the CD Door Slider Bottom as diagram shown. CD Door Slider Bottom Caution : During assembling, ensure CD Door Base is properly seated onto the CD Door Slider Bottom. •...
  • Page 46 9.18.2. Assembly of Door Shaft & CD Door Step 3 : Upset the Front Cabinet Unit. Step 4 : Remove Door Shaft. Slider Bottom Step 5 : Remove CD Door Slider Bottom. Step 1 : Slot the CD Door Slider Bottom thru the Door Shaft. Caution : During assembling, ensure CD Door Slider Bot- tom is turned downwards as diagram show.
  • Page 47 Step 2 : Slot in the one end of the Door Shaft into the hole as Step 4 : Upset the Front Cabinet Unit. shown in the diagram above. Step 5 : Push the Door Shaft as arrow shown. Step 6 : Make sure that the Door Shaft is fixed by the Catch. Step 3 : Push the Door Shaft downwards and slot it into the hole.

  • Page 48: Replacement Of Rack Top, Slider Top & Timing Gear Shaft

    9.19. Replacement Rack Top, Step 4 : Remove the Slider Top. Slider Top & Timing Gear Shaft • Refer to "Disassembly of Stand Unit” • Refer to "Disassembly of Net Frame Unit” • Refer to "Disassembly of Front Cabinet unit” •...
  • Page 49 9.19.3. Assembly of Timing Gear Shaft Step 3 : Fix Rack Top. Caution : During assembling, ensure that the Rack Top is properly inserted & seated onto the Front Cabinet Unit. Step 1 : Fix Timing Gear Shaft. Caution : During assembling, ensure that the Timing Gear Shaft is properly inserted &...

  • Page 50: Disassembly Of Speaker Unit

    9.20. Disassembly of Speaker unit 9.21. Disassembly of Speaker P.C.B. & Bridge 2 P.C.B. • Refer to "Disassembly of Stand Unit” • Refer to "Disassembly of iPod/iPhone P.C.B." • Refer to "Disassembly of Stand Unit” • Refer to "Disassembly of Net Frame Unit” •...

  • Page 51: Disassembly Of Traverse Deck

    9.22. Disassembly of Traverse Deck Caution : During assembling of the Speaker unit, ensure that the wire is dressed as shown in the diagram above. • Refer to "Disassembly of Stand Unit” • Refer to "Disassembly of iPod/iPhone P.C.B." • Refer to "Disassembly of Net Frame Unit” •...
  • Page 52 Step 3 : Remove 4 screws. Caution : During assembling, ensure the CD Mecha Bracket is properly slot into the rear cabinet unit. Step 4 : Detach 22P FFC at the connector (CN807) on Main P.C.B.. Step 5 : Remove Traverse Deck.

  • Page 53: Disassembly Of Traverse Cover

    9.23. Disassembly of Traverse Cover Step 5 : Lift up the traverse unitto remove it. • Refer to "Disassembly of Traverse Deck” Step 1 : Release 3 catches. Step 2 : Remove the Traverse Cover. Step 3 : Detach 25P FFC at the connector (CN7002) on the CD Servo P.C.B..

  • Page 54: Disassembly Of Cd Servo P.c.b

    9.24. Disassembly Servo 9.25. Disassembly of LCD Holder P.C.B. Unit and Panel P.C.B. • Refer to "Disassembly of Traverse Deck” • Refer to "Disassembly of Stand Unit” • Refer to "Disassembly of iPod/iPhone P.C.B." Step 1 : Desolder the terminal. •...

  • Page 55: Disassembly Of Headphone/Aux P.c.b

    9.26. Disassembly Headphone/ Step 3 : Detach 3P wire at the connector (P902) on Panel P.C.B.. Aux P.C.B. Step 4 : Remove LCD Holder Unit. • Refer to "Disassembly of Stand Unit” • Refer to "Disassembly of iPod/iPhone P.C.B." • Refer to "Disassembly of Net Frame Unit” •...

  • Page 56: Disassembly Of Top Ornament Unit And Panel Key P.c.b

    9.27. Disassembly of Top Ornament 9.27.2. Disassembly of Panel Key P.C.B. Unit and Panel Key P.C.B. Step 3 : Remove 4 screw. • Refer to "Disassembly of Stand Unit” Step 4 : Remove Panel Key P.C.B.. • Refer to "Disassembly of iPod/iPhone P.C.B." •...

  • Page 57: Disassembly Of Main P.c.b

    9.28. Disassembly of Main P.C.B. Caution: During assembling, ensure 8P wire dressed as diagram shown. • Refer to "Disassembly of Stand Unit” • Refer to "Disassembly of iPod/iPhone P.C.B." • Refer to "Disassembly of Net Frame Unit” • Refer to "Disassembly of Front Cabinet unit” •...

  • Page 58: Replacement Of Transistor (Q512)

    9.29. Replacement Transistor Caution: During assembling of Main P.C.B., ensure that the Main P.C.B. is properly seated on the locators. (Q512) • Refer to "Disassembly of Main P.C.B." 9.29.1. Disassembly of Transistor (Q512) Caution : Handle the heatsink unit and P.C.B. with caution due to its high temperature after prolonged use.
  • Page 59 9.29.2. Assembly of Transistor (Q512) Step 3 : Remove the Transistor (Q512). Step 1 : Apply grease to the heatsink unit. Step 2 : Install the Transistor (Q512) onto Main P.C.B.. Step 3 : Fix the Transistor (Q512) onto the heatsink unit with 1 screws.

  • Page 60: Service Position

    10 Service Position Note: For description of the disassembly procedures, see the Section 9 10.1. Checking & Repairing of SMPS Step 6 : Check and repair SMPS P.C.B. according to the dia- gram shown.. P.C.B. Step 1 : Remove Stand Unit. Step 2 : Remove iPod/iPhone P.C.B..

  • Page 61: Checking & Repairing Of Panel P.c.b

    10.2. Checking & Repairing of Panel Step 10 : Release 1 catch. Step 11 : Remove Position Switch P.C.B. as arrow shown. P.C.B. Step 12 : Remove Motor Assembly. Step 1 : Remove Stand Unit. Step 2 : Remove Net Frame Unit. Step 3 : Detach Front Cabinet Unit.
  • Page 62 Step 13 : Connect 6P wire at the connector (P101) on Main Step 15 : Connect 11P FFC at the connector (CN112) on Main P.C.B.. P.C.B.. Step 14 : Use a tape to keep the close switch (S642) Step 16 : Connect 3P wire at the connector (P902) on Panel depressed.

  • Page 63: Checking & Repairing Of Cd Servo P.c.b

    10.3. Checking & Repairing of CD Step 9 : Release 1 catch. Step 10 : Remove Position Switch P.C.B. as arrow shown. Servo P.C.B. Step 11 : Remove Motor Assembly. Step 1 : Remove Stand Unit. Step 2 : Remove Net Frame Unit. Step 3 : Detach Front Cabinet Unit.
  • Page 64 Step 12 : Connect 6P wire at the connector (P101) on Main Step 14 : Place the Traverse Deck on the Support Block. P.C.B.. Step 15 : Connect 22P extension cable (REEX1182) from Step 13 : Use a tape to keep the close switch (S642) CN807 on the Main P.C.B.

  • Page 65: Checking & Repairing Of Main P.c.b. (Side B)

    10.4. Checking & Repairing of Main Step 9 : Release 1 catch. Step 10 : Remove Position Switch P.C.B. as arrow shown. P.C.B. (Side B) Step 11 : Remove Motor Assembly. Step 1 : Remove Stand Unit. Step 2 : Remove Net Frame Unit. Step 3 : Detach Front Cabinet Unit.
  • Page 66 Step 12 : Connect 6P wire at the connector (P101) on Main Step 14 : Place the Traverse Deck on the Support Block. P.C.B.. Step 15 : Connect 22P extension cable (REEX1182) from Step 13 : Use a tape to keep the close switch (S642) CN807 on the Main P.C.B.

  • Page 67: Checking & Repairing Of Main P.c.b. (Side A)

    10.5. Checking & Repairing of Main Step 11 : Release 1 catch. Step 12 : Remove Position Switch P.C.B. as arrow shown. P.C.B. (Side A) Step 13 : Remove Motor Assembly. Step 1 : Remove Stand Unit. Step 2 : Remove Net Frame Unit. Step 3 : Detach Front Cabinet Unit.
  • Page 68 Step 16 : Remove 4 screws. Step 19 : Connect 11P FFC at the connector (CN112) on Main Step 17 : Flip Over Main P.C.B. & Speaker Unit as arrow P.C.B.. shown. Step 20 : Connect 3P wire at the connector (P902) on Panel P.C.B..
  • Page 69 Step 21 : Connect 6P wire at the connector (P101) on Main P.C.B.. Step 22 : Use a tape to keep the close switch (S642) depressed. Step 23 : Check and repair Main P.C.B. (Side A) according to the diagram shown.

  • Page 70: Voltage Measurement & Waveform Chart

    STANDBY IC7001 REF NO. MODE CD PLAY STANDBY IC7001 REF NO. MODE CD PLAY STANDBY IC7002 REF NO. MODE CD PLAY STANDBY IC7002 REF NO. MODE CD PLAY STANDBY Q7601 REF NO. MODE CD PLAY STANDBY SC-HC20GA/GN CD SERVO P.C.B.

  • Page 71: Main P.c.b. (1/3)

    CD PLAY STANDBY IC103 REF NO. MODE CD PLAY STANDBY IC300 REF NO. MODE CD PLAY STANDBY IC500 REF NO. MODE CD PLAY STANDBY IC503 REF NO. MODE CD PLAY STANDBY IC650 REF NO. MODE CD PLAY STANDBY SC-HC20GA/GN MAIN P.C.B.

  • Page 72: Main P.c.b. (2/3)

    CD PLAY STANDBY IC802 REF NO. MODE CD PLAY STANDBY IC803 REF NO. MODE CD PLAY STANDBY Q101 Q102 Q103 REF NO. MODE CD PLAY STANDBY Q104 Q302 Q382 Q509 Q511 REF NO. MODE CD PLAY STANDBY SC-HC20GA/GN MAIN P.C.B.

  • Page 73: Main P.c.b. (3/3)

    CD PLAY STANDBY IC900 REF NO. MODE CD PLAY STANDBY IC900 REF NO. MODE CD PLAY STANDBY Q900 REF NO. MODE CD PLAY STANDBY SC-HC20GA/GN PANEL 1 P.C.B. 11.6. TUNER P.C.B. IC52 REF NO. MODE CD PLAY STANDBY SC-HC20GA/GN TUNER P.C.B.

  • Page 74: Smps P.c.b

    11.7. SMPS P.C.B. REF NO. IC701 MODE CD PLAY 10.1 STANDBY 10.3 IC702 REF NO. MODE CD PLAY 11.7 165.2 STANDBY 11.7 165.2 SC-HC20GA/GN SMPS P.C.B.

  • Page 75: Waveform Chart

    11.8. Waveform Chart 0.24Vp-p(500nsec/div) 20Vp-p(1usec/div) 0.4Vp-p(100usec/div) 1Vp-p(5usec/div) 0.4Vp-p(200usec/div) 0.4Vp-p(100usec/div) 2.2Vp-p(200usec/div) 4Vp-p(50nsec/div) 2.2Vp-p(50nsec/div) 1.7Vp-p(10usec/div) 2Vp-p(10usec/div) 2.4Vp-p(100nsec/div) 1.9Vp-p(20nsec/div) 4.8Vp-p(20nsec/div)

  • Page 76: Illustration Of Ic's, Transistors And Diodes

    12 Illustration of IC’s, Transistors and Diodes C1BB00001151 (17P) C0DBFYY00049 C0CBCBC00090 C0HBA0000268 (48P) BA5948FPE2 (28P) C1AB00003282 (42P) MFI341S2164 (15P) C0ABBB000179 (8P) MN6627954AMA (100P) RFKWMHC10EB (100P) No.1 No.1 C0GAE0000007 C0DAEJG00001 C0EBE0000434 C3EBFY000006 MIP2G40MDSLJ C0DAEMZ00001 C0ABBB000216 B1BAAJ000003 B1GFGCAA0001 B1BCCG000023 VUEALLPT031 B1ABCF000176 B1ADCF000001 B1GDCFJJ0044 B1GBCFLL0037 B1GBCFJN0033...

  • Page 77: Overall Simplified Block

    13 Overall Simplified Block & & & & &...

  • Page 78: Block Diagram

    NRST 19 NRST LID LEFT 3 LID LEFT FROM/TO PCONT POWER SUPPLY PCONT POW 7 PCONT MOTOR 5V 6 5.5V MOTOR P.C.B. PCONT iPod PCONT iPod 8 PCONT iPod iPod PDET 98 BRIDGE 1 P.C.B. SC-HC20GA/GN SERVO/SYSTEM CONTROL BLOCK DIAGRAM...

  • Page 79: Audio Block Diagram

    SERVO/SYSTEM CONTROL iPod/iPhone P.C.B. QR101 MUTING MUTING MUTE HP CONTROL FROM/TO ASP CLK 18 SCL Q101,Q102 SERVO/SYSTEM CONTROL ASP DA 19 SDA IGOUTL 21 FROM/TO SERVO/SYSTEM CONTROL IC2801 IC2802 C0ABBB000179 C0ABBB000179 OP-AMP OP-AMP AUDIO DET IGOUTR 23 SC-HC20GA/GN AUDIO BLOCK DIAGRAM...

  • Page 80: Power Supply Block Diagram

    OUT 1 NRST SERVO/SYSTEM CONTROL iPod/iPhone P.C.B. IC500 USB5V CN381 CN1002 DOCK5V C0DAEJG00001 D520,D524 VOLTAGE REGULATOR CN905* P100 SYS5V SYS5V 2 VCC USB 5V USB5V OUT 4 VBUS/5V FROM PCONT iPod 1 CTL SERVO/SYSTEM CONTROL COLD SC-HC20GA/GN POWER SUPPLY BLOCK DIAGRAM...

  • Page 81: Wiring Connection Diagram

    15 Wiring Connection Diagram P751 T701 TUNER P.C.B. (Side B) P904* P903* SOLDER SIDE 1... 2 1... 2 P905 AC IN SPEAKER P.C.B. (TRANSFORMER) 220-240V 50Hz...GN SOLDER SIDE 110-240V 50/60Hz...GA TO RIGHT SPEAKER TO LEFT SPEAKER 2....8 SMPS P.C.B. 1....9 CN51 BRIDGE 2 P.C.B.

  • Page 83: Schematic Diagram Notes

    16 Schematic Diagram Notes (All schematic diagrams may be modified at any time with • Voltage and signal line the development of new technology) : +B Signal Line Notes: : -B Signal Line S641: OPEN switch. S642: CLOSE switch. S901: : CD Audio Input Signal Line POWER switch ( S903:...

  • Page 85: Schematic Diagram

    12 11 R7220 R7330 W7002 W7004 5.6K C7335 X7201 C7315 IC7002 0.47 H2B169500005 BA5948FPE2 C7334 4 CH DRIVE IC C7338 10V220 0.056 R7323 R7331 3.3k R7325 R7315 3.3k R7332 R7335 TRAVERSE MOTOR SPINDLE MOTOR M7301* M7302* SC-HC20GA/GN CD SERVO CIRCUIT...

  • Page 86: Main Circuit (1/4)

    REST_SW REST SW R205 NC(LOADING) IC2801~IC2802 C0ABBB000179 R2830 R2841 OP AMP IC 100K 6.8K R2829 C2808 R2834 100K 100K C2826 R2840 C2827 R2827 R2842 100K C2823 R2828 C2821 100K C2828 R2843 R2839 100K TO MAIN SECTION (3/4) SC-HC20GA/GN MAIN CIRCUIT...

  • Page 87: Main Circuit (2/4)

    K6...GA B1GBCFJJ0051 SWITCH C465 0.01 R462 R461 P102 MPORT_L MPORT_L VCC_GND AGND MPORT_R HEADPHONE/ MPORT_R MPORT_SW MPORT_SW AUX CIRCUIT HP_L (P908) IN HP_L HP_GND SCHEMATIC HP_GND HP_R DIAGRAM - 7 TO MAIN HP_R HP_SW SECTION (4/4) HP_SW SC-HC20GA/GN MAIN CIRCUIT...

  • Page 88: Main Circuit (3/4)

    R981 100K C0EBE0000434 C306 R845 4.7K RESET IC R846 4.7K ON/OFF R820 100K VOUT IC802 IPHONE_RST C0DBFYY00049 C302 R303 Q302 VOLTAGE REGULATOR C815 100P B1GBCFLL0037 680P IPHONE RESET SWITCH C828 C827 C816 6.3V100 6.3V220 680P VCC_GND STDBY3.3V SC-HC20GA/GN MAIN CIRCUIT...

  • Page 89: Main Circuit (4/4)

    IC503 VCC_GND VOLTAGE REGULATOR C0CBCBC00090 Vstdby M5.5V LDO REGULATOR R518 1.2K R519 C511 C521 6.3V100 C513 10V10 CN112 DIMMER KEY2 KEY1 7.5V PWRGND PANEL CIRCUIT LCD_CE (CN900) IN LCD_WR SCHEMATIC LCD_DI DIAGRAM - 6 D3.3V REM_IN STDBY3.3V SC-HC20GA/GN MAIN CIRCUIT...

  • Page 90: Panel Circuit

    [22] SEG22 SEG19 COM0 SEG19 C901 SEG20 COM1 SEG20 1000P SEG21 COM2 SEG21 R934 16 17 DGND C922 VREF 1000P R933 IR921 R920 B3RAB0000084 REMOTE SENSOR D993 D995 B3AEA0000129 B0BC6R100010 LED_VCC LED_GND R935 Q900 B1GBCFJN0033 LED DRIVE SC-HC20GA/GN PANEL CIRCUIT...

  • Page 91: Tuner, Panel Key, Headphone/Aux & Position Switch Circuit

    MPORT_R MAIN CIRCUIT MPORT_SW (P102) L222 HP_L C956 JK952 IN SCHEMATIC J0JBC0000014 HP_GND DIAGRAM - 3 HP_R HP_SW L223 J0JBC0000014 HEADPHONE L402 C417 C217 J0JBC0000014 L202 J0JBC0000014 R411 R211 SC-HC20GA/GN TUNER / PANEL KEY / HEADPHONE/AUX / POSITION SWITCH CIRCUIT...

  • Page 92: Motor, Bridge 1, Speaker & Bridge 2 Circuit

    IN SCHEMATIC L_SPKR_+ DIAGRAM - 3 R_SPKR_- BRIDGE 2 R_SPKR_- DIAGRAM - 8 L_SPKR_- CIRCUIT (P907) R_SPKR_+ IN SCHEMATIC R_SPKR_- P903* DIAGRAM - 8 R_SPKR_+ TO RIGHT SPEAKER R_SPKR_- SC-HC20GA/GN MOTOR / BRIDGE 1 / SPEAKER / BRIDGE 2 CIRCUIT...

  • Page 93: Smps Circuit

    50V1 0.33 2.2K F751 T3.15AL 250V...GA P751 L702 T1.6AL 250V...GN G0B453G00003 R728 R729 R730 AC IN C725 110-240V 50/60Hz...GA ZA751 ZA752 1.5M 1.5M 1.5M F0CAF104A105 220-240V 50Hz...GN Z752 ERZVA5Z471...GA C727 C728 ERZV10V511CS...GN F1BAF1020020 F1BAF1020020 1000P 1000P ZJ701 SC-HC20GA/GN SMPS CIRCUIT...

  • Page 94: Ipod/Iphone Circuit

    DIAGRAM - 4 DPORT_AGND L1029 R1011 IN - L DOCK_R OUT J0JFC0000006 L1030 IN - R iPod DET R1001 R1003 R1004 OUT_L L1032 VGND 100K 100K R1002 J0JBC0000015 OUT_R VIDEO AUDIO_RETURN VGND L1009 iPod_DET L1031 R1012 J0JFC0000006 L1008 J0JFC0000006 SC-HC20GA/GN iPod/iPhone CIRCUIT...

  • Page 95: Printed Circuit Board

    R1010 L1007 W7027 L1006 TP11 L1002 L1005 C1002 L1001 0694A 0694A PSW1 L1004 CN1001 R1008 L1011 C1003 C1004 0672AC-1 0672AC-1 0672AC-1 0672AC-1 (SIDE A) (SIDE B) SC-HC20GA/GN NOTE “*” REF IS FOR INDICATION ONLY CD SERVO/ TUNER/ iPod/iPhone P.C.B.

  • Page 96: Main P.c.b

    R803 R893 R801 R829 R820 X802 K5...GN C816 C825 R845 K6...GA R846 R821 R966 R825 R965 C805 R822 C806 R964 R824 C545 0672AA-1 0672AA-1 0672AA-1 0672AA-1 (SIDE A) (SIDE B) SC-HC20GA/GN MAIN P.C.B. NOTE “*” REF IS FOR INDICATION ONLY...

  • Page 97: Panel, Panel Key, Headphone/Aux, Position Switch & Motor P.c.b

    MT1* L401 C956 L202 C954 0673A/CH-1 0673A/CH-1 L220 L222 JK951 JK952 S642 P908 (CLOSE) L223 L402 0673A/CF-1 0673A/CF-1 P642 HEADPHONE P640* D601 0673A/CE-1 0673A/CE-1 SC-HC20GA/GN NOTE “*” REF IS FOR INDICATION ONLY PANEL/ PANEL KEY/ HEADPHONE/AUX/ POSITION SWITCH/ MOTOR P.C.B.

  • Page 98: Bridge 1, Speaker, Bridge 2 & Smps P.c.b

    C710 CN905* IC701 C727 C706 C753 D701 C728 W716 0673A/CA-1 0673A/CA-1 CAUTION RISK OF ELECTRIC SHOCK AC VOLTAGE LINE. PLEASE DO NOT TOUCH THIS P.C.B SC-HC20GA/GN BRIDGE 1/ SPEAKER/ BRIDGE 2/ SMPS P.C.B. NOTE “*” REF IS FOR INDICATION ONLY...

  • Page 99: Terminal Function Of Ic's

    19 Terminal Function of IC’s 19.1. IC801 (RFKWMHC10EB) MICRO PROCESSOR IC Pin No. Mark Function EE_SCL EEPROM Clock Signal Pin No. Mark Function EE_SDA I/O EEPROM Data Signal No connection CRTIMER CR Timer No connection LCD_CE Chip Selection Output No connection OCD_SDA On Chip Debugger Data LID_LEFT...

  • Page 100: Ic7001 (Mn6627954Ama) Ic Servo Processor

    19.2. IC7001 (MN6627954AMA) IC SERVO PROCESSOR Pin No. Mark Function AVDD1 Analog Power Supply Voltage 1 Pin No. Mark Function OUTR Audio O/P (RCH) DRAM address signal O/P 9 DVSS3 GND3 (Digital Circuit) DRAM address signal O/P 11 NSRVMONON Servo Motor O/P Enabling DRAM address signal O/P 8 EXT0 / SRDATA Expansion O/P Port 0...

  • Page 101: Ic7002 (Ba5948Fpe2) Ic 4Ch Drive

    19.3. IC7002 (BA5948FPE2) IC 4CH Drive Pin No. Mark Function Motor Driver Input Turntable Motor Drive Signal (L:ON) Motor Drive (1) Input Traverse Motor Drive Signal (L): N.C. No Connection PGND1 Ground Connection (1) for Drive PVCC1 Power Supply (1) for Drive Motor Drive (1) reverse - action output Motor Drive (1) forward - action...

  • Page 103: Exploded View And Replacement Parts List

    (MOTOR P.C.B.) *P641 NOTE: WHEN CHANGING LOADING MECHANISM PARTS, APPLY SPECIFIED GREASE TO AREAS MARKED "XXX" AS SHOWN. LABEL DESCRIPTION PART NUMBER GREASE RZGGG6AG SC-HC20GA/GN-K NOTE: " * " PART IS NOT SUPPLIED / REF IS FOR INDICATION ONLY. CABINET DRAWINGS...
  • Page 104 CN801 CN112 CN332 (MAIN P.C.B.) (TRAVERSE UNIT) P100 *HEATSINK EXTRUSION P906 P101 (BRIDGE 2 P.C.B.) CN381 CN807 P907 (SPEAKER P.C.B.) *P904 P905 *P903 SC-HC20GA/GN-K NOTE: " * " PART IS NOT SUPPLIED / REF IS FOR INDICATION ONLY. CABINET DRAWINGS...
  • Page 105 TRAVERSE UNIT T701 F751 P751 *HEATSINK B ZJ701 *CN905 (SMPS P.C.B.) CN7001 S7201 CN7002 (CD SERVO P.C.B.) *SMPS HEATSINK SC-HC20GA/GN-K NOTE: " * " PART IS NOT SUPPLIED / REF IS FOR INDICATION ONLY. CABINET / TRAVERSE UNIT DRAWINGS...
  • Page 106 (FOR GA ONLY) AC CORD (FOR GA ONLY) A1-1 AC CORD (FOR GA ONLY) SA-HC20GA/GN AC CORD (FOR GN ONLY) OI BOOK AM LOOP ANTENNA F R O N T FM INDOOR ANTENNA POLYFOAM (LEFT) POLYFOAM (RIGHT) SC-HC20GA/GN-K PACKAGING DRAWINGS...
  • Page 107 20.1.3. Mechanical Replacement Parts List Safety Ref. No. Part No. Part Name & Qty Remarks Description Safety Ref. No. Part No. Part Name & Qty Remarks RGPX1023-K1 CD DOOR BASE Description RGUX1012-S CD EJECT BUTTON RGUX1015-S POWER BUTTON CABINET AND RHD26046 SCREW CHASSIS...
  • Page 108 Safety Ref. No. Part No. Part Name & Qty Remarks Description RMUX1003 TIMING GEAR SHAFT RMXX1007-1 LCD DIFFUSER RSCX1020 SMPS SHIELD PLATE A RSCX1021 SMPS SHIELD PLATE B RXGX1003 DAMPER GEAR RXQ1690 MOTOR ASS’Y RYBX1006-K1 NET FRAME UNIT RYBX1007-K1 NET FRAME UNIT VHD1224-1 SCREW XSN2+4FJ...

  • Page 109: Electrical Replacement Parts List

    20.2. Electrical Replacement Parts List Safety Ref. No. Part No. Part Name & Qty Remarks Description Safety Ref. No. Part No. Part Name & Qty Remarks PCB10 REPX0818EE BRIDGE 1 P.C.B. Description (RTL) REPX0818GE BRIDGE 1 P.C.B. PRINTED CIRCUIT (RTL) BOARDS PCB11 REPX0818GG...
  • Page 110 Safety Ref. No. Part No. Part Name & Qty Remarks Safety Ref. No. Part No. Part Name & Qty Remarks Description Description Q101 B1GFGCAA0001 TRANSISTOR S914 EVQ11G04M SW VOL- Q102 B1GFGCAA0001 TRANSISTOR S915 EVQ11G04M SW VOL+ Q103 B1ABCF000176 TRANSISTOR S7201 RSH1A048-A SW REST Q104...
  • Page 111 Safety Ref. No. Part No. Part Name & Qty Remarks Safety Ref. No. Part No. Part Name & Qty Remarks Description Description L1001 J0JFC0000006 INDUCTOR JK52 K4AC02B00042 JK AM ANT L1002 J0JFC0000006 INDUCTOR JK951 K2HC1YYB0033 JK AUX L1003 J0JHC0000107 INDUCTOR JK952 K2HC1YYB0033 JK HEADPHONE...
  • Page 112 Safety Ref. No. Part No. Part Name & Qty Remarks Safety Ref. No. Part No. Part Name & Qty Remarks Description Description D0GB223JA008 1/16W R461 ERJ6GEYJ330V 1/8W D0GB104JA008 100K 1/16W R462 ERJ6GEYJ330V 1/8W D0GB102JA008 1/16W R463 ERJ6GEYJ104V 100K 1/10W D0GB102JA008 1/16W R464 ERJ6GEYJ273V...
  • Page 113 Safety Ref. No. Part No. Part Name & Qty Remarks Safety Ref. No. Part No. Part Name & Qty Remarks Description Description R854 D0GB101JA008 1/16W R2827 D0GB104JA008 100K 1/16W R855 D0GB101JA008 1/16W R2828 D0GB104JA008 100K 1/16W R856 D0GB564JA008 560K 1/16W R2829 D0GB104JA008 100K...
  • Page 114 Safety Ref. No. Part No. Part Name & Qty Remarks Safety Ref. No. Part No. Part Name & Qty Remarks Description Description F1H1H103A219 0.01uF C414 F1H1A105A025 F1H1H103A219 0.01uF C415 F1H1H221A792 220pF F1H1H103A219 0.01uF C416 F1H1H472A219 4700pF F1H1H120A230 12pF C417 F1H1C104A042 0.1uF F1H1H120A230 12pF...
  • Page 115 Safety Ref. No. Part No. Part Name & Qty Remarks Description C901 F1H1H102A219 1000pF C902 F1H1H221A748 220pF C904 F1H1H221A748 220pF C905 F1H1H221A748 220pF C907 F1H1H103A219 0.01uF C922 F1H1H102A219 1000pF C954 F1H1C104A042 0.1uF C956 F1H1C104A042 0.1uF C1002 F1G1C104A083 0.1uF C1003 F1G1C104A083 0.1uF C1004 F1G1C104A083...

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