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SERVICE MANUAL
Ver. 1.1 2005.04
• MHC-GX355/GX555/RG270/RG475S/RG575S are
composed of the following models.
As service manuals are issued for each component
model, please refer to them.
COMPONENT MODEL NAME
Compact Disc Deck Receiver
Front Speaker
Sub woofer
SPECIFICATIONS
Power requirements
North American model:
120 V AC, 60 Hz
European and Russian models:
230 V AC, 50/60 Hz
Australian model:
230 – 240 V AC, 50/60 Hz
Argentine model:
220 V AC, 50/60 Hz
Mexican model:
127 V AC, 60 Hz
Saudi Arabian model:
120 – 127, 220 or
230 – 240 V AC, 50/60 Hz
Adjustable with voltage
selector
Other models:
120 V, 220 V or
230 – 240 V AC, 50/60 Hz
Adjustable with voltage
selector
Power consumption
USA model:
MHC-GX555:
285 watts
MHC-GX355:
210 watts
Canadian model:
MHC-GX555:
380 VA
MHC-GX355:
290 VA
European and Russian models:
MHC-RG475S:
300 watts
0.25 watts (at the Power
Saving Mode)
MHC-RG270:
190 watts
0.25 watts (at the Power
Saving Mode)
Mexican model:
MHC-RG575S:
300 watts
MHC-RG270:
210 watts
Other models:
MHC-RG575S:
300 watts
MHC-RG475S:
300 watts
MHC-RG270:
210 watts
Sony Corporation
9-879-534-02
Personal Audio Group
2005D05-1
Published by Sony Engineering Corporation
© 2005.04
MHC-GX355/GX555/RG270/
MHC-GX355
MHC-GX555
HCD-GX355
HCD-GX555
SS-GX555
SS-WG555
Dimensions (w/h/d) (excl. speakers)
Approx. 280 × 325 ×
430 mm
Mass (excl. speakers)
North American model:
MHC-GX555:
Approx. 10.5 kg
MHC-GX355:
Approx. 10.0 kg
Canadian model:
MHC-GX555:
Approx. 10.5 kg
MHC-GX355:
Approx. 10.0 kg
European and Russian models:
MHC-RG475S:
Approx. 10.5 kg
MHC-RG270:
Approx. 8.7 kg
Other models:
MHC-RG575S:
Approx. 10.5 kg
MHC-RG475S:
Approx. 10.5 kg
MHC-RG270:
Approx. 10.0 kg
Supplied accessories
Remote Commander (1)
R6 (Size AA) batteries (2)
AM loop antenna (1)
FM lead antenna (1)
Video cable (Mexican
model only) (1)
Speaker pads
MHC-GX555/RG575S/
RG475S (12)
MHC-GX355/RG270 (8)
Design and specifications are subject to change
without notice.
RG475S/RG575S
MHC-RG270
MHC-RG475S
HCD-RG270
HCD-RG475
SS-RG475
(Except Mexican)
SS-RG475AV
(Mexican)
ACCESSORIES
Part No.
Description
1-754-102-31 ANTENNA, LOOP (LW.MW)
1-754-243-11 ANTENNA (FM)
1-751-619-13 CORD, CONNECTION (VIDEO CABLE) (MX)
2-055-382-01 BATTERY COVER (for RM-SC3)
2-159-896-01 CUSHION (FOOT) (SPEAKER PADS) (8 pieces)
2-580-011-13 MANUAL, INSTRUCTION (ENGLISH) (EXCEPT EE, MX)
2-580-011-23 MANUAL, INSTRUCTION (FRENCH)
2-580-011-33 MANUAL, INSTRUCTION (SPANISH)
2-580-011-42 MANUAL, INSTRUCTION (GERMAN, DUTCH) (AEP)
2-580-011-52 MANUAL, INSTRUCTION (ITALIAN, PORTUGUESE) (AEP)
2-580-011-62 MANUAL, INSTRUCTION (SWEDISH, DANISH, FINNISH)
2-580-011-72 MANUAL, INSTRUCTION (POLISH, CZECH, HUNGARIAN,
2-580-011-82 MANUAL, INSTRUCTION (RUSSIAN) (RU)
2-580-011-92 MANUAL, INSTRUCTION (ARABIC) (E3, EA)
2-580-012-12 MANUAL, INSTRUCTION (TRADITIONAL CHINESE) (SP)
2-593-196-01 CUSHION (FOOT-12) (SPEAKER PADS) (12 pieces)
A-1060-760-A OVERALL ASSY (RM-SC3)
• Abbreviation
CND : Canadian model
AR : Argentine model
E2
: 120V AC Area in E model
E3
: 240V AC Area in E model
E51 : Chilean and Peruvian model
MINI HI-FI COMPONENT SYSTEM
US Model
Canadian Model
MHC-GX355/GX555
AEP Model
UK Model
Australian Model
MHC-RG270/RG475S
E Model
MHC-RG270/RG475S/RG575S
MHC-RG575S
HCD-RG575
SS-RG575
(Except Mexican)
SS-RG475
SS-RG575AV
(Mexican)
SS-WG475
SS-WG575
Remark
(MHC-GX355/RG270)
(CND, AEP, E2, E3, SP, EA)
(AEP, E51, MX, E2, SP, AR)
GREEK) (EE)
(MHC-GX555/RG475S/RG575S)
EA : Saudi Arabia model
EE
: East European model
MX : Mexican model
RU : Russian model
SP
: Singapore model
(EE)

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Summary of Contents for Sony MHC-RG270

  • Page 1 MX : Mexican model : 240V AC Area in E model RU : Russian model E51 : Chilean and Peruvian model : Singapore model MINI HI-FI COMPONENT SYSTEM Sony Corporation 9-879-534-02 Personal Audio Group 2005D05-1 Published by Sony Engineering Corporation © 2005.04...
  • Page 2 Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2005.03 2005.04 Addition of Argentine and Saudi Arabia models (MHC-RG270) Addition of Argentine and Singapore models (MHC-RG575S)
  • Page 3 MHC-GX555. HCD-RG270/RG475/RG575 • HCD-RG270 is the amplifier, CD player, tape deck and tuner section in MHC-RG270. • HCD-RG475 is the amplifier, CD player, tape deck and tuner section in MHC-RG475S. • HCD-RG575 is the amplifier, CD player, tape Photo: HCD-RG575 deck and tuner section in MHC-RG575S.
  • Page 4 1 kHz, DIN) Power consumption Frequency response 50 – 13,000 Hz (±3 dB), Continuous RMS power output (reference): USA model: using Sony TYPE I 125 + 125 watts (6 ohms at cassettes HCD -GX555: 285 watts 1 kHz, 10% THD)
  • Page 5 FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS • Usable with ordinary solder QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT It is best to use only unleaded solder but unleaded solder may DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
  • Page 6: Table Of Contents

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 TABLE OF CONTENTS SERVICING NOTES EXPLODED VIEWS ..........5 7-1. Overall Section ..............66 GENERAL 7-2. Back Panel Section ............67 ..............6 7-3. Front Panel Section ............68 7-4. Key Section ..............69 DISASSEMBLY 7-5. Chassis Section ..............70 3-1.
  • Page 7: Servicing Notes

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 SECTION 1 SERVICING NOTES • MODEL IDENTIFICATION NOTES ON HANDLING THE OPTICAL PICK-UP – Back Panel – BLOCK OR BASE UNIT Model number label The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc.
  • Page 8: General

    HCD-GX355/GX555/RG270/RG475/RG575 SECTION 2 This section is extracted from instruction manual. GENERAL • Location of Controls Main unit ALPHABETICAL ORDER BUTTON DESCRIPTIO ?/1 (power) 1 A – O P – Z X (pause) qs ALBUM +/– qs P FILE 4 x (stop) qs AUDIO IN wl PHONES jack w;...
  • Page 9 HCD-GX355/GX555/RG270/RG475/RG575 Remote control ALPHABETICAL ORDER BUTTON DESCRIPT ?/1 (power) 1 A – E F – Z m/M (rewind/fast forward) ALBUM + qa FM MODE 4 ALBUM – qd FUNCTION 6 N (play) 8 CD qk PLAY MODE w; X (pause) 8 CLEAR qg REPEAT 4 x (stop) 8...
  • Page 10: Disassembly

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 SECTION 3 DISASSEMBLY • This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW 3-2. CASE (TOP) (Page 9) 3-3. DOOR (CD) (Page 9) 3-4. FRONT PANEL SECTION (Page 10) 3-6. CD MECHANISM DECK 3-5.
  • Page 11: Case (Top)

    HCD-GX355/GX555/RG270/RG475/RG575 Note: Follow the disassembly procedure in the numerical order given. 3-2. CASE (TOP) 0 case (top) 5 two screws (B3) 6 case (side-R) 7 two screws 2 two screws (B3) 4 three screws (case 3 TP2) 3 case (side-R) 1 three screws (case 3 TP2) 3-3.
  • Page 12: Front Panel Section

    HCD-GX355/GX555/RG270/RG475/RG575 3-4. FRONT PANEL SECTION • Abbreviation AR : Argentina model E2 : 120V AC Area in E model E51 : Chilean and Peruvian models MX : Mexican model 1 connector (CN061) (E2, E51, AR, MX) 5 connector (CN066) 8 screw (B3) 7 screw (B3) 4 connector (CN065)
  • Page 13: Cd Mechanism Deck (Cdm74Kfs-F1Bd81C (Except Mx Model)/Cdm74Kfs-F1Bd84 (Mx Model))

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 3-6. CD MECHANISM DECK (CDM74KFS-F1BD81C (EXCEPT MX MODEL)/CDM74KFS-F1BD84 (MX MODEL)) 7 CD mechanism deck (CDM74KFS-F1BD81C (except MX)/CDM74KFS-F1BD84 (MX)) (MX) 6 connector (CN1004) 1 three screws (B3) (MX) 5 wire (flat type) (13 core) (CN331) • Abbreviation MX : Mexican model 3 wire (flat type) (13 core) (CN701) 4 wire (flat type) (27 core) (CN201) (Except MX) wire (flat type) (31 core) (CN201) (MX)
  • Page 14: Main Board

    HCD-GX355/GX555/RG270/RG475/RG575 3-8. MAIN BOARD 4 connector (CN441) 5 MAIN board MAIN board 1 connector (CN907) 2 connector 3 two screws (B3) (CN905) 3-9. BD BOARD/CD BOARD 2 screw (+BVTP 2.6) • Abbreviation MX : Mexican model 5 BD board (MX)/ 3 gap tube CD board (except MX) 1 wire (flat type) (16 core) (CN101)
  • Page 15: Driver Board, Sw Board

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 3-10. DRIVER BOARD, SW BOARD 1 two screws (+BTTP (M2.6)) 3 connector 4p (CN703) 4 DRIVER board 5 screw (+BTTP (M2.6)) 6 SW board 2 wire (flat type) 5p (CN702) 3-11. OPTICAL PICK-UP BLOCK (KSM-215DCP) • Abbreviation MX : Mexican model 1 floating screw (+PTPWH M2.6)
  • Page 16: Sensor Board

    HCD-GX355/GX555/RG270/RG475/RG575 3-12. SENSOR BOARD 1 floating screw (+PTPWH M2.6) 2 t ray 8 s crew (+BTTP (M2.6)) 3 b elt (table) 0 SENSOR board 4 floating screw (+PTPWH M2.6) 5 p ulley (table) 6 floating screw 9 connector (+PTPWH M2.6) ( CN731) 7 g ear (geneva) 3-13.
  • Page 17: Motor (Ld) Board

    HCD-GX355/GX555/RG270/RG475/RG575 3-14. MOTOR (LD) BOARD 2 two screws (+BTTP (M2.6)) 4 Remove the two solderings of motor. 3 MOTOR (LD) board 5 l oading motor assy (M751) 1 b elt (loading)
  • Page 18: Test Mode

    HCD-GX355/GX555/RG270/RG475/RG575 SECTION 4 TEST MODE MC COLD RESET AMP TEST MODE The cold reset clears all data including preset data stored in the This mode is used to display the parameter of amplifier IC and RAM to initial conditions. Execute this mode when returning the display the VACS status.
  • Page 19 HCD-GX355/GX555/RG270/RG475/RG575 AGING MODE 3. Tape Deck Section The sequence during the aging mode is following as below. This mode can be used for operation check of CD section and tape If an error occurred, stop display that step. deck section. CD section and tape deck section work in parallel.
  • Page 20 HCD-GX355/GX555/RG270/RG475/RG575 MC TEST MODE 1. Mechanism Deck Error Code Mode When this mode is entered, mechanism deck error code is displayed This mode is used to check operations of microprocessor. with the 10-character format on the fluorescent indicator tube. Procedure: 1.
  • Page 21 HCD-GX355/GX555/RG270/RG475/RG575 The 7th and 8th digit from the left indicates: The 5th and 6th digit from the left indicates: (Motor status display) (Error step display) The 7th and 8th digit from the left indicates which motor output The 5th and 6th digit from the left indicates which processing when status when an error occurred is indicated.
  • Page 22: Electrical Adjustment

    HCD-GX355/GX555/RG270/RG475/RG575 SECTION 5 ELECTRICAL ADJUSTMENTS CD SECTION RF signal waveform VOLT/DIV : 200mV Note: TIME/DIV : 500ns 1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given. 2. Use YEDS-18 (3-702-101-01) unless otherwise indicated. level : 1.3 ±...
  • Page 23: Block Diagram - Cd Servo Section

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 SECTION 6 DIAGRAMS 6-1. BLOCK DIAGRAM – CD SERVO Section – FILTER CD DSP XTSL IC101 (1/2) (EXCEPT MX) XTAO IC101 (1/2) (MX) CLOCK X171 51 53 50 52 DETECTOR XTAI CD +3V GENERATOR 16.9344MHz XTACN CD-L RFACO RFACI AOUT1...
  • Page 24: Block Diagram - Audio/Video Section

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 6-2. BLOCK DIAGRAM – AUDIO/VIDEO Section – (MX) VR801 MIC LEVEL (MX) JK801 CD GRAPHICS MIC AMP MIC AMP DECODER MIC 1 IC801 (1/2) IC801 (2/2) IC1001 MUTING (MX) J803 SBSO VIDEO AMP Q801 3 DATA VOUT SCHMIT VIDEO OUT IC1006...
  • Page 25: Block Diagram - Amp Section

    HCD-GX355/GX555/RG270/RG475/RG575 6-3. BLOCK DIAGRAM – AMP Section – HP IN (Page 22) DBFB J701 R-CH (Page 22) R-CH PHONES JK441 POWER VOL OUT1 BUFFER (Page 22) IC251 IC441 – FRONT SPEAKER IMPEDANCE MUTING R-CH USE 6 – 16Ω Q251 – STANDBY R-CH SWITCH...
  • Page 26: Block Diagram - Panel, Power Supply Section

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 6-4. BLOCK DIAGRAM – PANEL, POWER SUPPLY Section – FL/LED DRIVER SYSTEM CONTROLLER IC701 IC901 (4/4) • Abbreviation E2 : 120V AC Area in E model S1 – S21 FL701 (MX) 36 I-VFD-DATA E3 : 240V AC Area in E model FLUORESCENT 35 O-VFD-DATA INDICATOR...
  • Page 27 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 • Note For Printed Wiring Boards and Schematic Diagrams • Circuit Boards Location Note on Printed Wiring Board: Note on Schematic Diagram: CD-G board (MX) • X : parts extracted from the component side. • All capacitors are in µF unless otherwise noted. (p: pF) •...
  • Page 28: Printed Wiring Board - Cd Board - (Except Mx Model)

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 • See page 25 for Circuit Boards Location. 6-5. PRINTED WIRING BOARD – CD Board – (Except MX model) : Uses unleaded solder. CD BOARD CD BOARD M101 (SPINDLE) (COMPONENT SIDE) (CONDUCTOR SIDE) IC303 S101 (LIMIT) C302 C303 C305 C501...
  • Page 29: Schematic Diagram - Cd Board - (Except Mx Model)

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 6-6. SCHEMATIC DIAGRAM – CD Board – (Except MX model) • See page 50 for Waveforms. • See page 50 for IC Block Diagrams. C131 100p TP423 IOP1 C142 1500p C134 C125 R131 R121 R143 C151 TP10 R203 C143 3.3k...
  • Page 30: Printed Wiring Board - Bd Board - (Mx Model)

    HCD-GX355/GX555/RG270/RG475/RG575 • See page 25 for Circuit Boards Location. 6-7. PRINTED WIRING BOARD – BD Board – (MX model only) : Uses unleaded solder. BD BOARD M101 (COMPONENT SIDE) BD BOARD (SPINDLE) S101 (CONDUCTOR SIDE) (LIMIT) C302 IC303 C305 C303 R405 C255 C315...
  • Page 31: Schematic Diagram - Bd Board - (Mx Model)

    HCD-GX355/GX555/RG270/RG475/RG575 6-8. SCHEMATIC DIAGRAM – BD Board – (MX model only) • See page 50 for Waveforms. • See page 50 for IC Block Diagrams. C131 100p TP423 IOP1 C142 1500p C134 C125 R131 R121 R143 C151 TP10 R203 C143 3.3k TP424 100k...
  • Page 32: Printed Wiring Boards - Changer Section

    HCD-GX355/GX555/RG270/RG475/RG575 • See page 25 for Circuit Boards Location. 6-9. PRINTED WIRING BOARDS – CHANGER Section – : Uses unleaded solder. • Semiconductor Location Ref. No. Location D701 SENSOR BOARD SW BOARD D711 IC701 IC712 IC731 CN751 Q731 IC731 S751 OPEN/CLOSE (Page 32) DETECT...
  • Page 33: Schemtic Diagram - Changer Setion

    HCD-GX355/GX555/RG270/RG475/RG575 6-10. SCHEMATIC DIAGRAM – CHANGER Section – • See page 50 for IC Block Diagrams. LOADING MOTOR DRIVE IC701 BA6956AN R702 R701 CN721 CN704 LM-2 LM-2 D701 M751 C751 LM-1 LM-1 MTZJ-T-77 0.01 (LOADING) 5.1A S711 DISC TRAY ADDRESS DETECT CN703 TABLE MOTOR DRIVE...
  • Page 34: Printed Wiring Board - Main Board

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 • See page 25 for Circuit Boards Location. 6-11. PRINTED WIRING BOARD – MAIN Board – : Uses unleaded solder. • Semiconductor Location Ref. No. Location (EXCEPT MX) (MX) BD BOARD CD-G BOARD CD BOARD DRIVER BOARD D001 CN201 CN201...
  • Page 35: Schematic Diagram - Main Board (1/3)

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 6-12. SCHEMATIC DIAGRAM – MAIN Board (1/3) – • See page 50 for Waveforms. • See page 60 for IC Pin Function Description. (1/3) R1971 (AEP,UK,EE,E2,E51,AR) R1972 (US,CND,AEP,UK,EE,RU,E2,E51,AR) R1973 (AEP,UK,EE,RU,EA,MX) R1974 (EXCEPT E3,EA,AUS,SP) R1976 (GX555,RG475) R1977 (GX355,RG270) CN991 R953 (MX)
  • Page 36: Schematic Diagram - Main Board (2/3)

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 6-13. SCHEMATIC DIAGRAM – MAIN Board (2/3) – • See page 50 for Waveforms. • See page 50 for IC Block Diagrams. (Page 33) (2/3) Q111,112 BAND-PASS FILTER (E2,E51,MX,AR) C114 (Page 41) CN066 R107 R108 Q112 R116 R106 R069 2SC3052...
  • Page 37: Schematic Diagram - Main Board (3/3)

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 6-14. SCHEMATIC DIAGRAM – MAIN Board (3/3) – (Page 33) CN381 (3/3) 11P(AEP,UK,EE) 15P(EXCEPT AEP,UK,EE) RDS DATA RDS CLK ANTENNA JW040 (AEP,UK,EE) +3.3V TU-MUTE R384 T-MU FN 75Ω TUNER-R TU-R COAXIAL FM/AM ∗R251,252 TUNER PACK RG270:AEP,UK,EE,RU/ TUNER-L TU-L RG475:AEP,UK,EE,RU/RG575 SUPPLIED WITH...
  • Page 38: Printed Wiring Board - Power Board

    HCD-GX355/GX555/RG270/RG475/RG575 • See page 25 for Circuit Boards Location. 6-15. PRINTED WIRING BOARD – POWER Board – : Uses unleaded solder. JK441 SPEAKER IMPEDANCE USE 6 – 16Ω – – POWER BOARD (AEP, UK, EE, RU) (AEP, UK, EE, RU) (CHASSIS) (AEP, UK, EE, RU) (AEP, UK, EE, RU)
  • Page 39: Schematic Diagram -Power Board

    HCD-GX355/GX555/RG270/RG475/RG575 6-16. SCHEMATIC DIAGRAM – POWER Board – R447 JW422 C441 R441 JW401 2.2k L441 R461 R411 R413 R412 IC441(1/2) STK403-130 L442 JR441 C445 100p R462 R414 R497 R466 R465 Q481,482 Q483,484 R451 100k 100k R416 R415 0.22 DC DETECT TEMPERATURE DETECT POWER AMP C451...
  • Page 40: Printed Wiring Board - Sub Woofer Board - (Gx555/Rg475/Rg575 Only)

    HCD-GX355/GX555/RG270/RG475/RG575 • See page 25 for Circuit Boards Location. 6-17. PRINTED WIRING BOARD – SUB WOOFER Board – (GX555/RG475/RG575 only) : Uses unleaded solder. JK501 SUB WOOFER OUT IMPEDANCE USE 6– 16Ω SUB WOOFER – BOARD JK501 R527 IC501 R512 Q502 C512 R515...
  • Page 41: Schematic Diagram - Sub Woofer Board - (Gx555/Rg475/Rg575 Only)

    HCD-GX355/GX555/RG270/RG475/RG575 6-18. SCHEMATIC DIAGRAM – SUB WOOFER Board – (GX555/RG475/RG575 only) POWER AMP IC501 STK404-130 Q507 2SC3052 TEMPERATURE DETECT R511 R506 0.22 R530 R507 C508 4.7k 220p JW521 R510 0.22 R508 C507 4.7k R513 JR501 C516 C505 C502 C513 Q501 220p R509 2SC5625...
  • Page 42: Printed Wiring Boards - Audio, Mic, Headphone Boards

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 • See page 25 for Circuit Boards Location. 6-19. PRINTED WIRING BOARDS – AUDIO IN, MIC, HEADPHONE Boards – : Uses unleaded solder. MAIN BOARD (Page 32) MIC BOARD CN066 (MX) (MX) (CHASSIS) (Page 32) AUDIO IN MAIN BOARD BOARD CN065...
  • Page 43 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 6-20. SCHEMATIC DIAGRAM – AUDIO IN, MIC, HEADPHONE Boards – • See page 50 for IC Block Diagrams. (E2,E51,MX,AR) R856 C863 C862 (MX) 0.047 C865 4700p VR851 (E2,E51,AR) C870 C869 JR801 R859 (E2,E51,AR) ECHO LEVEL C867 MIC AMP 0.047 (MX) R855...
  • Page 44: Printed Wiring Boards - Cd-G Section - (Mx Model Only)

    HCD-GX355/GX555/RG270/RG475/RG575 • See page 25 for Circuit Boards Location. 6-21. PRINTED WIRING BOARDS – CD-G Section – (MX model only) : Uses unleaded solder. CD-G BOARD CD-G BOARD (CONDUCTOR SIDE) (COMPONENT SIDE) J803 VIDEO VIDEO OUT BOARD FB1001 R1031 C1019 11, 21 R1036 R1037...
  • Page 45: Schematic Diagram - Cd-G Section - (Mx Model Only)

    HCD-GX355/GX555/RG270/RG475/RG575 6-22. SCHEMATIC DIAGRAM – CD-G Section – (MX model only) • See page 50 for Waveforms. • See page 50 for IC Block Diagrams. • See page 60 for IC Pin Function Description. SCOR WFCK SCHMIT TRIGGER IC1005 SN74AHCT04NSR R1038 470P SBSO...
  • Page 46: Printed Wiring Board - Panel Section (1/2)

    HCD-GX355/GX555/RG270/RG475/RG575 • See page 25 for Circuit Boards Location. 6-23. PRINTED WIRING BOARD – PANEL Section (1/2) – : Uses unleaded solder. PANEL BOARD R627 JW605 R628 C621 C622 R625 JW629 JW636 JW637 R607 R621 R622 (GX555/RG475/RG575) D611 JW628 JW635 JW638 JW639 STANDBY...
  • Page 47: Printed Wiring Board - Panel Section (2/2)

    HCD-GX355/GX555/RG270/RG475/RG575 • See page 25 for Circuit Boards Location. 6-24. PRINTED WIRING BOARD – PANEL Section (1/2) – : Uses unleaded solder. VOL BOARD S638 EQ BAND S626 S625 S637 ROTARY ENCODER MASTER VOLUME S624 ALBUM + S636 l – EQ + L –...
  • Page 48: Schematic Diagram - Panel Section (1/2)

    HCD-GX355/GX555/RG270/RG475/RG575 • See page 60 for IC Pin Function Description. 6-25. SCHEMATIC DIAGRAM – PANEL Section (1/2) – (1/2) FL701 FLUORESCENT INDICATOR TUBE REMOTE CONTROL RECEIVER IC610 RPM7240-H18 R619 R620 C631 C621 R622 R625 R621 R623 4.7k 4.7k C622 C712 22 50V C711 0.01...
  • Page 49: Schematic Diagram - Panel Section (2/2)

    HCD-GX355/GX555/RG270/RG475/RG575 6-26. SCHEMATIC DIAGRAM – PANEL Section (2/2) – (Page 46) (2/2) R652 R650 R667 R666 R665 R664 R663 R662 R660 2.2k 4.7k 4.7k 2.2k 2.2k S616 S615 S614 S613 S612 S611 R651 R661 S602 S601 S617 S660 MASTER VOLUME DISPLAY CD SYNC REC PAUSE...
  • Page 50: Printed Wiring Boards - Trans Section

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 • See page 25 for Circuit Boards Location. 6-27. PRINTED WIRING BOARDS – TRANS Section – : Uses unleaded solder. • Semiconductor Location Ref. No. Location SUB TRANS BOARD D901 (E2, E3, E51, EA, SP) D902 D903 D904 D905 D906...
  • Page 51: Schematic Diagram - Trans Section

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 6-28. SCHEMATIC DIAGRAM – TRANS Section – PT901 MAIN POWER TRANSFORMER (AUS) CN905 F904 250V JW907 CN904 EXCEPT E2, CN903 (E2,E3,E51,EA,SP) E3,E51,EA,SP EXCEPT E2, AEP,UK, E3,E51,EA,SP EXCEPT E2, JW902 JW901 EE,RU,AR (E2,E3,E51,EA,SP) EXCEPT E2, (Page 37) E3,E51,EA,SP NEUTRAL 4P (E2,E3,E51,EA,SP) E3,E51,EA,SP...
  • Page 52 HCD-GX355/GX555/RG270/RG475/RG575 • Waveforms • IC Block Diagrams – CD Board – – CD Board – (Except MX model) IC101 CXD3059AR IC101 yd (LRCK) IC101 yh (BCK) Q201 (Collector) (REC mode) 119 118 116 115 114 112 111 110 109 103 102 101 100 CPU INTERFACE 4.5 Vp-p...
  • Page 53 HCD-GX355/GX555/RG270/RG475/RG575 IC251 BA5947FM-E2 MUTING + – INTERFACE LEVEL SHIFT INTERFACE INTERFACE VREF...
  • Page 54 HCD-GX355/GX555/RG270/RG475/RG575 IC301 TC94A34FG-002 Timing Generator VDDP PO5/AD5 /RESET PO6/AD6 STANDBY PO7AD7 /MICS /MILP MIDIO AD10 VDDT /MICK /MIACK/ SRMSTB AD16 VDDT VDDM PO8/AD11 SDO0 PO9/AD12 /CCE/ PO10/ BCKO AD13 BUCK/ PO11/ LRCKO AD14 SDO3/ SDI0 Interrupt Timer Control Switch General Input/ PO12/ Output...
  • Page 55 HCD-GX355/GX555/RG270/RG475/RG575 IC303 BH15FB1WG THERMAL PROTECTION OVER CURRENT PROTECTION VOLTAGE CONTROL REFERENCE BLOCK...
  • Page 56 HCD-GX355/GX555/RG270/RG475/RG575 – BD Board – IC101 CXD3059AR 119 118 116 115 114 112 111 110 109 103 102 101 100 CPU INTERFACE SERVO INTERFACE 90 RMUT 89 IOVDD0 88 NC 87 AVDD2 86 AOUT2 COVERTER 85 VREFR MIRR MIRR DFCT 84 AVSS2 DFCT 83 AVSS1...
  • Page 57 HCD-GX355/GX555/RG270/RG475/RG575 IC251 BA5947FM-E2 MUTING + – INTERFACE LEVEL SHIFT INTERFACE INTERFACE VREF...
  • Page 58 HCD-GX355/GX555/RG270/RG475/RG575 IC301 TC94A34FG-002 Timing Generator VDDP PO5/AD5 /RESET PO6/AD6 STANDBY PO7AD7 /MICS /MILP MIDIO AD10 /MICK VDDT /MIACK/ SRMSTB AD16 VDDT VDDM PO8/AD11 SDO0 PO9/AD12 /CCE/ PO10/ BCKO AD13 BUCK/ PO11/ LRCKO AD14 SDO3/ SDI0 Interrupt Timer Control Switch General Input/ PO12/ Output...
  • Page 59 HCD-GX355/GX555/RG270/RG475/RG575 – DRIVER Board – IC303 BH15FB1WG IC701, 712 BA6956AN THERMAL PROTECTION OVER CURRENT PROTECTION CONTROL LOGIC VOLTAGE CONTROL REFERENCE BLOCK – CD-G Board – IC1002 MSM514400E-60TS-K WRITE DATA INPUT DATA OUTPUT CLOCK BUFFER BUFFER GENERATOR CLOCK GENERATOR 4M BIT SENSE AMP COLUMN MEMORY...
  • Page 60 HCD-GX355/GX555/RG270/RG475/RG575 – MAIN Board – IC101 BD3401KS2 56 55 54 53 52 51 48 MNF2 SOFT 47 MOUT2 SWITCH 46 MOUT1 45 MNF1 44 BNF1 43 BOUT1 − 42 BOUT2 41 BNF2 INPUT − SELECT PBNF2 PBOUT2 BUFFER PBOUT1 − MIC AMP PBNF1 40 AMS OUT...
  • Page 61 HCD-GX355/GX555/RG270/RG475/RG575 – MIC Board – IC802 M65850FP-E1 OSCILLATOR LPF2 1/2 VCC CLOCK AUTO MAIN 20KBIT RESET RESET CONTROL SRAM LPF1...
  • Page 62 HCD-GX355/GX555/RG270/RG475/RG575 • IC Pin Function Description MAIN BOARD M30302MCP-A02FPU0 (SYSTEM CONTROLLER) Pin No. Pin Name Description O-BD3401- Serial data output to the electrical volume DATA O-BD3401-CLK Serial data transfer clock signal output to the electrical volume O-VFD-RESET System reset signal output to the FL/LED driver O-VFD-CE Chip enable signal output to the FL/LED driver I-AC-CUT...
  • Page 63 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 Pin No. Pin Name Description O-MP3-STB Standby signal output to the MP3 decoder I-MP3-REQ Data send request signal input from the MP3 decoder O-MP3-LP Latch pulse signal output to the MP3 decoder O-XLT Latch pulse signal output to the CD DSP Not used O-XRST System reset signal output to the CD DSP and motor/coil driver...
  • Page 64 HCD-GX355/GX555/RG270/RG475/RG575 Pin No. Pin Name Description O-BIAS REC bias on/off control signal output terminal Auto music sensor detection signal input from the electrical volume I-TAPE-AMS "L": music is present, "H": music is not present I-STREAM Audio signal input for stream LED (A/D input) I-VACS VACS signal input terminal (A/D input) I-PROTECTOR...
  • Page 65 HCD-GX355/GX555/RG270/RG475/RG575 CD-G BOARD IC1001 TC9411AFG (BS, K) (CD GRAPHICS DECODER) Pin No. Pin Name Description SESUB Not used CLCK Serial data transfer clock signal output to the CD DSP DATA Serial data input from the CD DSP SBSY Subcode Q sync (SCOR) input from the CD DSP SFSY WFCK signal input from the CD DSP MUTE...
  • Page 66 HCD-GX355/GX555/RG270/RG475/RG575 Pin No. Pin Name Description System clock input terminal (17.734475 MHz) (for PAL) Not used System clock output terminal (17.734475 MHz) (for PAL) Not used System clock input terminal (14.31818 MHz) (for NTSC) System clock output terminal (14.31818 MHz) (for NTSC)
  • Page 67 HCD-GX355/GX555/RG270/RG475/RG575 PANEL BOARD IC701 µPD780232GC-508-8BT-A (FL/LED DRIVER) Pin No. Pin Name Description VDD1 Power supply terminal (+3.3V) VSS1 Ground terminal System clock input terminal (4.19 MHz) System clock output terminal (4.19 MHz) Not used RESET System reset signal input from the system controller "L": reset SCK1 Serial data transfer clock signal input from the system controller Serial data output to the system controller...
  • Page 68: Exploded Views

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 SECTION 7 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark 0 are may have some difference from the original are seldom required for routine service.
  • Page 69: Back Panel Section

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 7-2. BACK PANEL SECTION supplied (MX) (MX) CD mechanism section-1 supplied M001 not supplied chassis section Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-254-142-01 SCREW (B3), (+) BV TAPPING 3-254-143-11 SCREW (B3), (+) BV TAPPING A-1094-102-A SUB TRANS BOARD, COMPLETE (GX555) 2-549-976-01 PANEL, BACK (GX555: US) A-1094-103-A SUB TRANS BOARD, COMPLETE...
  • Page 70: Front Panel Section

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.2 7-3. FRONT PANEL SECTION (E2, E51, AR, MX) supplied not supplied PANEL board FL701 key section (EXCEPT MX) supplied supplied supplied supplied (MX) supplied supplied (E2, E51, AR, MX) (E2, E51, AR, (MX) 119 103 not supplied supplied Ref.
  • Page 71: Key Section

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.2 7-4. KEY SECTION Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 2-348-864-03 DOOR (A), CASSETTE 2-348-868-02 KEY (DISPLAY) 2-549-974-01 SPRING (C-DOOR-L) 2-348-872-02 KEY (EQ) (GROOVE, PRESET EQ, P FILE, 4-238-631-11 TAPE SPRING SURROUND, EFFECT ON/OFF, ENTER) X-2067-223-1 PANEL (S) ASSY, FRONT (GX555: US) 2-348-869-02 KEY (MODE) (MX) X-2067-224-1 PANEL (S) ASSY, FRONT...
  • Page 72: Chassis Section

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 7-5. CHASSIS SECTION (GX555/RG475/RG575) (MX) not supplied not supplied supplied transformer section Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-254-142-01 SCREW (B3), (+) BV TAPPING A-1094-134-A POWER BOARD, COMPLETE (RG475: E3, AUS) A-1093-929-A MAIN BOARD, COMPLETE (GX555) A-1094-136-A POWER BOARD, COMPLETE (GX355) A-1093-930-A MAIN BOARD, COMPLETE...
  • Page 73: Transformer Section

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 7-6. TRANSFORMER SECTION PT901 F904 F905 F906 F907 supplied supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-701-748-00 CLAMP (RG270: MX) A-1102-772-A AC1 BOARD, COMPLETE 4-242-539-01 BVIT 3B+3-8R W/O SLOT (RG270: AEP, UK, EE, RU) A-1094-068-A TRANSFORMER BOARD, COMPLETE (GX555) A-1094-069-A TRANSFORMER BOARD, COMPLETE A-1102-773-A AC1 BOARD, COMPLETE (EA)
  • Page 74: Cd Mechanism Deck Section-1 (Cdm74Kfs-F1Bd81C) (Except Mx Model)/ (Cdm74Kfs-F1Bd84) (Mx Model)

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 7-7. CD MECHANISM DECK SECTION-1 (CDM74KFS-F1BD81C) (EXCEPT MX model)/ (CDM74KFS-F1BD84) (MX model) M741 CD mechanism deck section-2 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-218-253-62 SCREW (M2.6), +BTTP 4-243-820-01 GEAR (TABLE) 1-776-182-11 WIRE (FLAT TYPE) (5 CORE) 1-687-134-12 MOTOR (TB) BOARD 4-243-819-01 GEAR (GENEVA) 4-243-815-11 TABLE (LOADING)
  • Page 75 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 7-8. CD MECHANISM DECK SECTION-2 (CDM74KFS-F1BD81C) (EXCEPT MX model)/ (CDM74KFS-F1BD84) (MX model) S711 M751 S101 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-1103-756-A DRIVER BOARD, COMPLETE X-2102-809-1 PULLEY (KH) ASSY 4-218-253-52 SCREW (M2.6), +BTTP 4-231-189-01 PULLEY (B), CHUCKING 1-687-669-12 SW BOARD X-2055-190-1 HOLDER (213) ASSY...
  • Page 76: Electrical Parts List

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 SECTION 8 AUDIO IN ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark 0 are parts list may be different from the parts are seldom required for routine service.
  • Page 77 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C252 1-164-360-11 CERAMIC CHIP 0.1uF R151 1-216-864-11 SHORT CHIP C255 1-164-360-11 CERAMIC CHIP 0.1uF R161 1-216-809-11 METAL CHIP 1/10W R162 1-216-841-11 METAL CHIP 1/10W C257 1-164-360-11 CERAMIC CHIP 0.1uF R163...
  • Page 78 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C311 1-164-360-11 CERAMIC CHIP 0.1uF 1-126-246-11 ELECT CHIP 220uF C312 1-164-360-11 CERAMIC CHIP 0.1uF 1-162-964-11 CERAMIC CHIP 0.001uF C313 1-164-360-11 CERAMIC CHIP 0.1uF C111 1-162-967-11 CERAMIC CHIP 0.0033uF 10% C112 1-164-315-11 CERAMIC CHIP...
  • Page 79 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 CD-G Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R204 1-216-864-11 SHORT CHIP C1024 1-126-206-11 ELECT CHIP 100uF 6.3V R205 1-216-864-11 SHORT CHIP C1025 1-162-970-11 CERAMIC CHIP 0.01uF R251 1-216-833-11 METAL CHIP 1/10W C1026 1-110-530-11 ELECT CHIP 1000uF...
  • Page 80 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 CD-G DRIVER HEADPHONE MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R1031 1-218-285-11 METAL CHIP 1/10W R751 1-249-425-11 CARBON 4.7K 1/4W R1032 1-216-833-11 METAL CHIP 1/10W ************************************************************ R1033 1-216-825-11 METAL CHIP 2.2K 1/10W R1034 1-216-825-11 METAL CHIP...
  • Page 81 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C044 1-162-964-11 CERAMIC CHIP 0.001uF C151 1-107-826-11 CERAMIC CHIP 0.1uF (GX555/RG475/RG575) C045 1-164-156-11 CERAMIC CHIP 0.1uF C152 1-164-227-11 CERAMIC CHIP 0.022uF C063 1-164-156-11 CERAMIC CHIP 0.1uF (GX555/RG475/RG575) C064...
  • Page 82 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C222 1-126-947-11 ELECT 47uF < CONNECTOR > C223 1-131-679-31 FILM 0.01uF C224 1-130-479-00 MYLAR 0.0047uF 5% CN031 1-778-982-21 CONNECTOR, BOARD TO BOARD 13P C225 1-130-479-00 MYLAR 0.0047uF 5% CN041...
  • Page 83 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < IC > Q344 8-729-037-13 TRANSISTOR KTA1271Y Q345 6-551-276-01 TRANSISTOR RT1N431C-TP-1 IC006 6-702-771-01 IC TA78033LS IC011 8-759-701-59 IC NJM78M09FA Q346 8-729-037-13 TRANSISTOR KTA1271Y IC021 8-759-701-59 IC NJM78M09FA Q901 8-729-120-28 TRANSISTOR...
  • Page 84 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R113 1-216-829-11 METAL CHIP 4.7K 1/10W R175 1-216-821-11 METAL CHIP 1/10W R114 1-216-825-11 METAL CHIP 2.2K 1/10W R176 1-216-821-11 METAL CHIP 1/10W R116 1-216-809-11 METAL CHIP 1/10W R177 1-216-821-11 METAL CHIP...
  • Page 85 HCD-GX355/GX555/RG270/RG475/RG575 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R257 1-216-837-11 METAL CHIP 1/10W R341 1-216-833-11 METAL CHIP 1/10W (RG270: AEP, UK, EE, RU) R258 1-216-841-11 METAL CHIP 1/10W R342 1-216-821-11 METAL CHIP 1/10W (GX355/GX555/RG270: AEP, UK, EE, RU/RG575) R343 1-216-833-11 METAL CHIP 1/10W...
  • Page 86 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R996 1-216-809-11 METAL CHIP 1/10W R926 1-216-809-11 METAL CHIP 1/10W R997 1-216-809-11 METAL CHIP 1/10W R927 1-216-809-11 METAL CHIP 1/10W R998 1-216-809-11 METAL CHIP 1/10W R928 1-216-809-11 METAL CHIP...
  • Page 87 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C833 1-164-156-11 CERAMIC CHIP 0.1uF R802 1-216-825-11 METAL CHIP 2.2K 1/10W (E2, E51, MX, AR) (E2, E51, MX, AR) C851 1-126-160-11 ELECT R803 1-216-829-11 METAL CHIP 4.7K 1/10W (MX)
  • Page 88 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 MOTOR (LD) MOTOR (TB) PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < VARIABLE RESISTOR > D606 8-719-063-93 LED SLR325VC-N-T32 (STREAM) (GX555/RG475/RG575) VR801 1-223-983-11 RES, VAR, CARBON 50K (MIC LEVEL) D608 8-719-063-92 LED SLR325MC-M-T31-NP (E2, E51, MX, AR) (SUB WOOFER ON/OFF) (GX555/RG475/RG575) VR851...
  • Page 89 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 PANEL POWER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R627 1-216-801-11 METAL CHIP 1/10W R628 1-216-801-11 METAL CHIP 1/10W < SWITCH > R629 1-216-833-11 METAL CHIP 1/10W (GX555/RG475/RG575) S601 1-762-875-21 SWITCH, KEYBOARD (I/1) S602 1-762-875-21 SWITCH, KEYBOARD (DISPLAY) R631...
  • Page 90 HCD-GX355/GX555/RG270/RG475/RG575 POWER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C411 1-162-964-11 CERAMIC CHIP 0.001uF L442 1-422-009-13 COIL, AIR-CORE (AEP, UK, EE, RU) C411 1-162-970-11 CERAMIC CHIP 0.01uF < TRANSISTOR > (EXCEPT AEP, UK, EE, RU) C441 1-126-964-11 ELECT 10uF...
  • Page 91 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 POWER SENSOR SUB TRANS SUB WOOFER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R461 1-216-797-11 METAL CHIP 1/10W A-1094-102-A SUB TRANS BOARD, COMPLETE (GX555) A-1094-103-A SUB TRANS BOARD, COMPLETE R462 1-216-797-11 METAL CHIP 1/10W (RG475: AEP, UK, EE, RU) R465...
  • Page 92 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 SUB WOOFER TRANSFORMER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C503 1-162-968-11 CERAMIC CHIP 0.0047uF 10% R512 1-216-797-11 METAL CHIP 1/10W C504 1-104-662-91 ELECT 22uF R513 1-216-821-11 METAL CHIP 1/10W C505 1-162-915-11 CERAMIC CHIP 10PF 0.5PF R514...
  • Page 93 HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.1 TRANSFORMER VIDEO OUT Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C908 1-128-553-11 ELECT 220uF SW601 1-786-289-31 SWITCH, DETECTION C909 1-126-964-11 ELECT 10uF (l – EQ + L, – TUNING +) C910 1-126-968-11 ELECT 100uF ************************************************************ C911...
  • Page 94 HCD-GX355/GX555/RG270/RG475/RG575 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark ACCESSORIES ************ 1-770-019-61 ADAPTOR, CONVERSION PLUG (UK, EA) 1-573-856-12 ADAPTOR, CONVERSION 2P (E3) 1-569-008-21 ADAPTOR, CONVERSION (E51, SP)
  • Page 95 HCD-GX355/GX555/ RG270/RG475/RG575 US Model Canadian Model HCD-GX355/GX555 SERVICE MANUAL AEP Model UK Model Ver. 1.3 2005.09 Australian Model HCD-RG270/RG475 E Model HCD-RG270/RG475/RG575 SUPPLEMENT-1 Subject: • Change of CD Mechanism Block (CDM74KF-K6BD83S) • Change of MAIN board • Change of HEADPHONE board Changing Destination HCD-GX355/GX555 : US, CND models HCD-RG270...
  • Page 96 HCD-GX355/GX555/RG270/RG475/RG575 TABLE OF CONTENTS NEW/FORMER TYPE DISCRIMINATION ..3 ELECTRICAL ADJUSTMENT ......4 DIAGRAMS 3-1. Printed Wiring Board – CD Board – ....... 6 3-2. Schematic Diagram – CD Board – ........7 3-3. Printed Wiring Board – MAIN Board – ......8 3-4.
  • Page 97: New/Former Type Discrimination

    HCD-GX355/GX555/RG270/RG475/RG575 Ver. 1.4 NEW/FORMER TYPE DISCRIMINATION • Method to Distinguished by Test Mode New/former type can be distinguished in the version display mode of the test mode. Procedure: 1. Press the button to turn the power on. , [ILLUMINATION] and [DISC 2] 2.
  • Page 98: Electrical Adjustment

    HCD-GX355/GX555/RG270/RG475/RG575 ELECTRICAL ADJUSTMENT Checking Location: CD SECTION – CD Board (Conductor Side) – Note: 1. CD Block is basically constructed to operate without adjustment. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10 MΩ impedance. 4.
  • Page 99: Diagrams

    HCD-GX355/GX555/RG270/RG475/RG575 DIAGRAMS • Note For Printed Wiring Boards and Schematic Diagrams • Waveforms – MAIN Board – – CD Board – Note on Printed Wiring Board: Note on Schematic Diagram: IC201 1 (LRCK), 2 (LRCKI) IC901 qa • X : parts extracted from the component side. •...
  • Page 100: Printed Wiring Board - Cd Board

    HCD-GX355/GX555/RG270/RG475/RG575 3-1. PRINTED WIRING BOARD – CD Board – : Uses unleaded solder. M401 (SPINDLE) CD BOARD (COMPONENT SIDE) CD BOARD (CONDUCTOR SIDE) S201 (LIMIT) R280 C405 C406 R451 M402 (SLED) IC402 R104 R105 C104 R110 C109 R277 R108 R275 C404 C271 C424...
  • Page 101: Schematic Diagram - Cd Board

    HCD-GX355/GX555/RG270/RG475/RG575 • See page 5 for Waveforms. • See page 13 for IC Block Diagrams. • See page 15 for IC Pin Function Description. 3-2. SCHEMATIC DIAGRAM – CD Board – C210 C208 (RFACI) C230 R256 100p C257 C274 CN301 R266 R321 C303...
  • Page 102 HCD-GX355/GX555/RG270/RG475/RG575 3-3. PRINTED WIRING BOARD – MAIN Board – : Uses unleaded solder. • Semiconductor (Page 6) CD BOARD Location MAIN BOARD CN102 (GX355/RG270/RG575) (US, CND, RU) Ref. No. Location ANTENNA R958 JW127 R923 (GX555/RG475/RG575) D001 I-11 R387 R931 (US, CND, E2, E51) R981 R953 JW128...
  • Page 103: Schematic Diagram - Main Board (1/3)

    HCD-GX355/GX555/RG270/RG475/RG575 3-4. SCHEMATIC DIAGRAM – MAIN Board (1/3) – • See page 5 for Waveforms. • See page 15 for IC Pin Function Description. (1/3) R1971 (AEP,UK,EE,E2,E51) R1972 R1973 (AEP,UK,EE,RU) R1974 R1976 (GX555/RG475) R1977 (GX355/RG270) CN991 R953 R958 R971 (US,CND,RU) -VFL VFL- D-GND...
  • Page 104: Schematic Diagram - Main Board (2/3)

    HCD-GX355/GX555/RG270/RG475/RG575 3-5. SCHEMATIC DIAGRAM – MAIN Board (2/3) – • See page 5 for Waveforms. • See page 13 for IC Block Diagrams. (Page 9) (2/3) Q111,112 (E2,E51) BAND-PASS FILTER (E2,E51) C114 CN066 R107 R108 Q112 R116 (Refer to page 41 R106 R069 C070...
  • Page 105: Schematic Diagram - Main Board (3/3)

    HCD-GX355/GX555/RG270/RG475/RG575 3-6. SCHEMATIC DIAGRAM – MAIN Board (3/3) – (Page 9) (3/3) (AEP,UK,EE) RDS DATA R386 RDS CLK R385 ANTENNA R391 JW040 +3.3V R390 TU-MUTE R384 ∗ T-MU FM 75Ω TUNER-R TU-R COAXIAL ∗R251,252 TUNER RG270:AEP,UK,EE,RU/ (FM/AM) TUNER-L TU-L RG475:RG575 SUPPLIED WITH ∗...
  • Page 106: Printed Wiring Board - Headphone Board

    HCD-GX355/GX555/RG270/RG475/RG575 3-7. PRINTED WIRING BOARD – HEADPHONE Board – 3-8. SCHEMATIC DIAGRAM – HEADPHONE Board – : Uses unleaded solder. HEADPHONE BOARD JW701 CN701 MAIN BOARD CN061 C782 C781 L-OUT 1000p 1000p (Page 8) J701 HP-GND CN701 PHONES R-OUT D-GND HP CTL (Page 10) JW701...
  • Page 107 HCD-GX355/GX555/RG270/RG475/RG575 • IC Block Diagram – CD Board – IC402 BA5947FM-E2 MUTING + – INTERFACE LEVEL SHIFT INTERFACE INTERFACE VREF...
  • Page 108 HCD-GX355/GX555/RG270/RG475/RG575 – MAIN Board – IC101 BD3401KS2 56 55 54 53 52 51 48 MNF2 SOFT 47 MOUT2 SWITCH 46 MOUT1 45 MNF1 44 BNF1 43 BOUT1 − 42 BOUT2 41 BNF2 INPUT SELECT − PBNF2 PBOUT2 BUFFER PBOUT1 − MIC AMP PBNF1 40 AMS OUT...
  • Page 109 HCD-GX355/GX555/RG270/RG475/RG575 • IC Pin Function Description CD BOARD IC201 CXD3014A-201R (CD DSP) Pin No. Pin Name Description LRCK L/R sampling clock signal output terminal LRCKI L/R sampling clock signal input terminal PCMD Serial data output terminal PCMDI Serial data input terminal Bit clock signal output terminal BCKI Bit clock signal input terminal...
  • Page 110 HCD-GX355/GX555/RG270/RG475/RG575 Pin No. Pin Name Description FFDR Focus servo drive signal (+) output to the coil/motor driver FRDR Focus servo drive signal (-) output to the coil/motor driver IOVDD1 Power supply terminal (+3.3V) AVDD0 Power supply terminal (+3.3V) AVSS0 Ground terminal E signal input from the optical pick-up block F signal input from the optical pick-up block Tracking error signal input terminal...
  • Page 111 HCD-GX355/GX555/RG270/RG475/RG575 Pin No. Pin Name Description CLK2 MP3 serial data transfer clock signal input from the system controller SVSS Ground terminal SVDD Power supply terminal (+2.5V) JTAGTCK Not used JTAGTDI Not used JTAGTDO Not used JTAGTMS Not used TRST Not used Ground terminal Power supply terminal (+1.8V) IOVDD2...
  • Page 112 HCD-GX355/GX555/RG270/RG475/RG575 MAIN BOARD M30302MCP-A05FPU0 (SYSTEM CONTROLLER) Pin No. Pin Name Description O-BD3401- Serial data output to the electrical volume DATA O-BD3401-CLK Serial data transfer clock signal output to the electrical volume O-VFD-RESET System reset signal output to the FL/LED driver O-VFD-CE Chip enable signal output to the FL/LED driver I-AC-CUT...
  • Page 113 HCD-GX355/GX555/RG270/RG475/RG575 Pin No. Pin Name Description O-XLAT CD serial data latch pulse signa output to the CD DSP I-REQ-MP3 MP3 data request signal input from the CD DSP O-REQ-MP3 MP3 data request signal output to the CD DSP O-SSTB-MP3 Muting on/off control signal output to the motor/coil driver "L": muting on /M-MUTE Not used Not used...
  • Page 114 HCD-GX355/GX555/RG270/RG475/RG575 Pin No. Pin Name Description I-PROTECTOR Protector operating detection signal input terminal AVSS Ground terminal I-POWER, Front panel key input terminal (A/D input) DISPLAY VREF Reference voltage input terminal AVCC Power supply terminal (+3.3V) Not used...
  • Page 115: Exploded Views

    HCD-GX355/GX555/RG270/RG475/RG575 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark 0 are may have some difference from the original are seldom required for routine service.
  • Page 116: Chassis Section

    HCD-GX355/GX555/RG270/RG475/RG575 4-2. CHASSIS SECTION (GX555/RG475/RG575) not supplied not supplied supplied transformer section (Refer to page 71 of service manual) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-254-142-01 SCREW (B3), (+) BV TAPPING A-1094-138-A POWER BOARD, COMPLETE (RG270: E2, E51) A-1138-291-A MAIN BOARD, COMPLETE (GX555) A-1094-148-A POWER BOARD, COMPLETE (RG575) A-1138-292-A MAIN BOARD, COMPLETE...
  • Page 117: Cd Mechanism Deck Section-1 (Cdm74Kf-K6Bd83S)

    HCD-GX355/GX555/RG270/RG475/RG575 4-3. CD MECHANISM DECK SECTION-1 (CDM74KF-K6BD83S) M741 CD mechanism deck section-2 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-218-253-62 SCREW (M2.6), +BTTP 4-243-820-01 GEAR (TABLE) 1-776-182-11 WIRE (FLAT TYPE) (5 CORE) 1-687-134-12 MOTOR (TB) BOARD 4-243-819-01 GEAR (GENEVA) 4-243-815-11 TABLE (LOADING) 4-243-816-11 TRAY...
  • Page 118: Cd Mechanism Deck Section-2 (Cdm74Kf-K6Bd83S)

    HCD-GX355/GX555/RG270/RG475/RG575 4-4. CD MECHANISM DECK SECTION-2 (CDM74KF-K6BD83S) S711 M751 S101 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-1103-756-A DRIVER BOARD, COMPLETE 4-243-822-02 LEVER (LIFTER) 4-218-253-52 SCREW (M2.6), +BTTP X-2102-809-1 PULLEY (KH) ASSY 1-687-669-12 SW BOARD 4-231-189-01 PULLEY (B), CHUCKING 4-244-034-11 BELT (LOADING) X-2055-190-1 HOLDER (213) ASSY...
  • Page 119: Electrical Parts List

    HCD-GX355/GX555/RG270/RG475/RG575 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark are seldom required for routine service. parts list may be different from the parts 0 or dotted line with mark 0 are Some delay should be anticipated when specified in the diagrams or the components...
  • Page 120 HCD-GX355/GX555/RG270/RG475/RG575 HEADPHONE MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark IC402 6-705-808-01 IC BA5947FM-E2 A-1138-327-A HEADPHONE BOARD, COMPLETE < TRANSISTOR > (GX355/GX555/RG270/RG475) A-1138-328-A HEADPHONE BOARD, COMPLETE (RG575) Q321 6-551-120-01 TRANSISTOR 2SA2119K *************************** < RESISTOR/FERRITE BEAD > <...
  • Page 121 HCD-GX355/GX555/RG270/RG475/RG575 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C070 1-162-915-11 CERAMIC CHIP 10PF 0.5PF (AEP, UK, EE, RU) C163 1-126-965-11 ELECT 22uF C101 1-126-960-11 ELECT C171 1-126-956-11 ELECT 0.1uF C102 1-126-960-11 ELECT C172 1-126-956-11 ELECT 0.1uF C173 1-162-966-11 CERAMIC CHIP...
  • Page 122 HCD-GX355/GX555/RG270/RG475/RG575 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark CN201 1-564-705-11 PIN, CONNECTOR (SMALL TYPE) 3P C254 1-162-949-11 CERAMIC CHIP 47PF * CN203 1-564-710-11 PIN, CONNECTOR (SMALL TYPE) 8P C255 1-162-945-11 CERAMIC CHIP 22PF CN301 1-779-291-11 CONNECTOR, FFC (LIF (NON-ZIF)) 23P C256 1-162-945-11 CERAMIC CHIP...
  • Page 123 HCD-GX355/GX555/RG270/RG475/RG575 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark JR172 1-216-864-11 SHORT CHIP R034 1-216-837-11 METAL CHIP 1/10W JR174 1-216-864-11 SHORT CHIP R035 1-216-829-11 METAL CHIP 4.7K 1/10W JR901 1-216-864-11 SHORT CHIP R036 1-216-829-11 METAL CHIP 4.7K 1/10W R037...
  • Page 124 HCD-GX355/GX555/RG270/RG475/RG575 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R140 1-216-837-11 METAL CHIP 1/10W R205 1-216-833-11 METAL CHIP 1/10W R141 1-216-849-11 METAL CHIP 220K 1/10W R206 1-216-833-11 METAL CHIP 1/10W R207 1-216-837-11 METAL CHIP 1/10W R142 1-216-849-11 METAL CHIP 220K...
  • Page 125 HCD-GX355/GX555/RG270/RG475/RG575 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R280 1-216-829-11 METAL CHIP 4.7K 1/10W R383 1-216-817-11 METAL CHIP 1/10W (GX555/RG475/RG575) (AEP, UK, EE, RU) R283 1-216-833-11 METAL CHIP 1/10W R384 1-216-809-11 METAL CHIP 1/10W (GX555/RG475/RG575) (US, CND, E2, E51) R301...
  • Page 126 HCD-GX355/GX555/RG270/RG475/RG575 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R941 1-216-825-11 METAL CHIP 2.2K 1/10W MISCELLANEOUS R942 1-216-833-11 METAL CHIP 1/10W ************** R943 1-216-829-11 METAL CHIP 4.7K 1/10W R944 1-216-849-11 METAL CHIP 220K 1/10W 1-829-003-11 WIRE (FLAT TYPE) (19 CORE) R945 1-216-813-11 METAL CHIP 1/10W...
  • Page 127 HCD-GX355/GX555/RG270/RG475/RG575 MEMO...
  • Page 128 HCD-GX355/GX555/RG270/RG475/RG575 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2005.03 2005.04 Addition of Argentine and Saudi Arabia models (HCD-RG270)
  • Page 129 R-ch Photo: SS-GX555 Photo: SS-WG555 • SS-GX555 is the front speaker in MHC-GX355/GX555. • SS-RG475 is the front speaker in MHC-RG270/RG475S (Except Mexican model). • SS-RG475AV is the front speaker in MHC-RG270 (Mexican model only). • SS-RG575 is the front speaker in MHC-RG470/RG575S (Except Mexican model).
  • Page 130 Nominal impedance 6 ohms Dimensions (w/h/d) Approx. 245 × 380 × Sub woofer SS-WG475 for MHC-RG475S Front speaker SS-RG475 for MHC-RG270 290 mm Speaker system Bass-reflex type Mass Approx. 5.9 kg net per Speaker system 3-way, 3-unit, bass-reflex...
  • Page 131 SS-GX555/RG475/RG475AV/RG575/RG575AV/WG475/WG555/WG575 PARTS LIST Part No. Description Remark A-1097-956-A OVERALL ASSY (SS-WG555) A-1097-966-A SYSTEM (L) ASSY (L-ch) (SS-GX555) A-1097-967-A SYSTEM (R) ASSY (R-ch) (SS-GX555) A-1102-711-A SYSTEM (L) ASSY (L-ch) (SS-RG475) A-1102-712-A SYSTEM (R) ASSY (R-ch) (SS-RG475) A-1102-713-A OVERALL ASSY (SS-WG475) A-1102-901-A OVERALL ASSY (SS-RG575) A-1102-905-A OVERALL ASSY (SS-WG575) A-1107-097-A OVERALL ASSY (SS-RG575AV) A-1107-099-A SYSTEM (L) ASSY (L-ch) (SS-RG475AV)
  • Page 132 SS-GX555/RG475/RG475AV/RG575/RG575AV/WG475/WG555/WG575 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2005.03...

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