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HCD-EC55/EC77/GX99
SERVICE MANUAL
Ver. 1.2 2007.07
• HCD-EC55 (US and Canadian models) and HCD-EC77/
GX99 (US and Canadian models) are the Amplifier, CD
player and Tuner section in MHC-EC55/EC77/GX99.
• HCD-EC55 (Except US and Canadian models) and
HCD-EC77/GX99 (Except US and Canadian models)
are the Amplifier, CD player, Tape Deck and Tuner
section in MHC-EC55/EC77/GX99.
Main unit
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
(HCD-GX99, HCD-EC77 The United States model only)
Low channel
With 8 ohm loads, both channels driven, from 120 – 10,000 Hz; 60 watts
per channel minimum RMS power, with no more than 0.7% total harmonic
distortion from 250 milliwatts to rated output.
High channel
With 8 ohm loads, both channels driven, from 2,000 – 13,000 Hz; 60 watts
per channel minimum RMS power, with no more than 0.7% total harmonic
distortion from 250 milliwatts to rated output.
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
(HCD-EC55 The United States model only)
With 6 ohm loads, both channels driven, from 120 – 10,000 Hz; 45 watts
per channel minimum RMS power, with no more than 0.7% total harmonic
distortion from 250 milliwatts to rated output.
Amplifier section
HCD-GX99
Front speaker:
RMS output power (reference):
Low channel
95 W + 95 W (per channel at 8 Ω, 1 kHz, 10% THD)
High channel
95 W + 95 W (per channel at 8 Ω, 8 kHz, 10% THD)
Subwoofer:
RMS output power (reference):
150 W (at 6 Ω, 80 Hz, 10% THD)
HCD-EC77
North American model:
RMS output power (reference):
Low channel
95 W + 95 W (per channel at 8 Ω, 1 kHz, 10% THD)
High channel
95 W + 95 W (per channel at 8 Ω, 8 kHz, 10% THD)
Sony Corporation
9-887-532-03
Personal Audio Division
2007G16-1
Published by Sony Techno Create Corporation
© 2007.07
Photo : HCD-EC55 (E model)
Model Name Using Similar Mechanism
CD
Base Unit Name
Section
Optical Pick-up Name
TAPE
Model Name Using Similar Mechanism
Section
Tape Transport Mechanism Type

SPECIFICATIONS

European and Russian models:
Power output (rated):
Low channel
45 W + 45 W (at 8 Ω, 1 kHz, 1% THD)
High channel
45 W + 45 W (at 8 Ω, 8 kHz, 1% THD)
RMS output power (reference):
Low channel
65 W + 65 W (per channel at 8 Ω, 1 kHz, 10% THD)
High channel
65 W + 65 W (per channel at 8 Ω, 8 kHz, 10% THD)
Other models:
The following are measured at AC 120, 127, 220, 240 V, 50/60 Hz
Power output (rated):
Low channel
50 W + 50 W (at 8 Ω, 1 kHz, 1% THD)
High channel
50 W + 50 W (at 8 Ω, 8 kHz, 1% THD)
RMS output power (reference):
Low channel
70 W + 70 W (per channel at 8 Ω, 1 kHz, 10% THD)
High channel
70 W + 70 W (per channel at 8 Ω, 8 kHz, 10% THD)
HCD-EC55
North American model:
RMS output power (reference):
65 W+ 65 W (per channel at 6 Ω, 1 kHz, 10% THD)
European and Russian models:
Power output (rated): 45 W + 45 W (at 6 Ω, 1 kHz, 1% THD)
RMS output power (reference):
65 W + 65 W (per channel at 6 Ω, 1 kHz, 10% THD)
Other models:
The following are measured at AC 120, 127, 220, 240 V, 50/60 Hz
Power output (rated): 45 W + 45 W (at 6 Ω, 1 kHz, 1% THD)
RMS output power (reference):
65 W + 65 W (per channel at 6 Ω, 1 kHz, 10% THD)
COMPACT DISC DECK RECEIVER
US Model
Canadian Model
HCD-EC55/EC77/GX99
AEP Model
HCD-EC55/EC77
UK Model
HCD-EC55
E Model
Australian Model
HCD-EC55/EC77
NEW
BU-K6BD90-WOD
KSM-213DCP
NEW
CS-21SC-901TP
Inputs
AUDIO IN (stereo mini jack): Sensitivity 800 mV,
impedance 47 kilohms
Outputs
PHONES (stereo mini jack): Accepts headphones with
an impedance of 8 Ω or more
SPEAKER: Accepts impedance of 6 to 8 Ω
SUBWOOFER OUT (HCD-GX99 only)
CD player section
System: Compact disc and digital audio system
Laser: Semiconductor laser (λ=770 – 810 nm)
Emission duration: continuous
Frequency response: 20 Hz – 20 kHz
Signal-to-noise ratio: More than 90 dB
Dynamic range: More than 88 dB
Tape deck section (Except for North American model)
Recording system: 4-track 2-channel, stereo
Tuner section
FM stereo, FM/AM superheterodyne tuner
Antenna:
FM lead antenna
AM loop antenna
FM tuner section:
Tuning range
North American model: 87.5 – 108.0 MHz (100 kHz step)
Other models: 87.5 – 108.0 MHz (50 kHz step)
Intermediate frequency: 10.7 MHz
— Continued on next page —

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Table of Contents

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   Summary of Contents for Sony HCD-EC55

  • Page 1: Specifications

    AEP Model HCD-EC55/EC77 UK Model HCD-EC55 E Model • HCD-EC55 (US and Canadian models) and HCD-EC77/ GX99 (US and Canadian models) are the Amplifier, CD Australian Model player and Tuner section in MHC-EC55/EC77/GX99. HCD-EC55/EC77 • HCD-EC55 (Except US and Canadian models) and...
  • Page 2 LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
  • Page 3: Table Of Contents

    HCD-EC55/EC77/GX99 Ver. 1.2 TABLE OF CONTENTS SERVICING NOTES 7-4. Printed Wiring Board — BD90 Board — ...... 33 ..........4 7-5. Schematic Diagram — BD90 Board — ......34 7-6. Printed Wiring Boards — MAIN Section — ....35 GENERAL ..............
  • Page 4: Servicing Notes

    HCD-EC55/EC77/GX99 SECTION 1 SERVICING NOTES This appliance is classified as a CLASS 1 LASER product. CAUTION The CLASS 1 LASER PRODUCT MARKING is located on Use of controls or adjustments or performance of procedures the rear exterior. (Except for Korean model) other than those specified herein may result in hazardous radiation exposure.
  • Page 5 HCD-EC55/EC77/GX99 HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF Turn the bottom rib (not the gear) with a flathead screwdriver in the direction of arrow A, and draw out the tray in the direction of arrow B.
  • Page 6: General

    HCD-EC55/EC77/GX99 SECTION 2 This section is extracted from instruction manual. GENERAL Notes on playing multisession discs Basic Operations Adjusting the sound If the disc begins with a CD-DA (or MP3) session, it is recognized as a CD-DA (or MP3) disc, and playback continues until another session is encountered.
  • Page 7: Other Operations

    HCD-EC55/EC77/GX99 Using optional audio components Recording onto a tape (Except for North American model) To connect an optional headphones Use a TYPE I (normal) tape only. Connect headphones to the PHONES jack on the unit. You can record just the portions you like from a sound source, including connected audio components.
  • Page 8: Disassembly

    HCD-EC55/EC77/GX99 Ver. 1.2 SECTION 3 DISASSEMBLY 3-1. DISASSEMBLY FLOW • This set can be disassembled in the order shown below. 3-2. SIDE PANEL (R) , SIDE PANEL (L) (Page 9) 3-3. TOP PANEL ASSY 3-4. TOP PANEL (US, CND) (EXCEPT US, CND)
  • Page 9: Side Panel (r), Side Panel (l)

    HCD-EC55/EC77/GX99 Note: Follow the disassembly procedure in the numerical order given. 3-2. SIDE PANEL (R), SIDE PANEL (L) 5 two screws (+BVTP3 × 10 ) 4 four screws (TP3 × 12 ) 2 two screws (+BVTP3 × 10 ) 6 side panel (L)
  • Page 10: Top Panel Assy (except Us, Cnd)

    HCD-EC55/EC77/GX99 3-3. TOP PANEL ASSY (EXCEPT US, CND) 7 dowel 4 two screws 6 two 5 wire (flat type) (+BVTP3 × 10 ) claws 9core (CN606) 8 Remove the top panel assy 3 two screws (+BVTP3 × 10 ) in the direction of the arrow.
  • Page 11: Front Panel Assy

    HCD-EC55/EC77/GX99 3-5. FRONT PANEL ASSY 1 Turn the bottom rib (not the gear) with a flathead screwdriver in the direction of arrow A, and draw out the tray in the direction of arrow B. tray gear bottom rib flathead screwdriver...
  • Page 12: Mechanical Deck (except Us, Cnd)

    HCD-EC55/EC77/GX99 3-6. MECHANICAL DECK (EXCEPT US, CND) 2 four screws (+BVTP 2.6 × 8 ) 1 Open the cassette box. 8 mechanical deck 5 connector (CN501) 6 DECK board 7 Slide the lever in the 3 two screws direction of the arrow.
  • Page 13: Key-left Board

    HCD-EC55/EC77/GX99 3-8. KEY-LEFT BOARD 2 connector (CN401) 3 KEY-LEFT board 1 four screws (+BVTP 2.6 × 8 ) 3-9. KEY-RIGHT BOARD, KEY-CD BOARD, PANEL BOARD 7 knob (VOL) 2 connector (CN403) qa PANEL board 9 claw 0 wire (flat type)
  • Page 14: Jack Board

    HCD-EC55/EC77/GX99 3-10. JACK BOARD 4 JACK board 2 JACK HOLD board 1 three screws (+BVTP 2.6 × 8 ) 3 wire (flat type) 9core (CN605)
  • Page 15: Main Board

    HCD-EC55/EC77/GX99 3-11. MAIN BOARD 8 screw (+BVTP3 × 10 ) qa Remove the soldering. qs REG board qd MAIN board 3 wire (flat type) 21core (CN608) 7 two screws (+BVTP3 × 6 ) 4 connector (CN601) (EC77/GX99) 9 two screws (+BVTP3 ×...
  • Page 16: Cd Mechanical

    HCD-EC55/EC77/GX99 3-12. CD MECHANICAL 1 wire (flat type) 21core (CN608) 2 four screws (+BVTP3 × 10 ) 3 Remove the CD mechanical in the direction of the arrow. 8 CD mechanical 4 wire (flat type) 21core 5 wire (flat type)
  • Page 17: Optical Pick-up (ksm-213dcp), Bd90 Board

    HCD-EC55/EC77/GX99 3-13. OPTICAL PICK-UP (KSM-213DCP), BD90 BOARD 1 two screws (+PTPWHM 2.6) 2 two coil springs (insulator) 3 two insulators 4 two screws (+PTPWHM 2.6) 5 two coil springs (insulator) 6 two insulators 9 optical pick-up (KSM-213DCP) 7 wire (flat type) (16 core) (CN301) q;...
  • Page 18: Belt (dlm3a)

    HCD-EC55/EC77/GX99 3-14. BELT (DLM3A) 1 two screws 2 two screws 3 cover 4 belt (DLM3A) 5 belt (DLM3A) 3-15. CHASSIS 0 four screws (+BVTP4 × 12 ) 1 clamp 5 heatsink support 4 two screws (+BVTP3 × 10 ) 8 back panel 3 six screws (+BVTP3 ×...
  • Page 19: Pt Board (except Ec55:us, Cnd), Pt (u) Board (ec55:us, Cnd), Power Transformer

    HCD-EC55/EC77/GX99 Ver. 1.2 3-16. PT BOARD (EXCEPT EC55:US, CND), PT (U) BOARD (EC55:US, CND), POWER TRANSFORMER 1 four screws (+BV4 × 8 ) 2 PT (U) board, power transformer (EC55:US,CND) 2 PT board, power transformer (EXCEPT EC55:US,CND) 3-17. LOW-AMP BOARD, HI-AMP BOARD (EC77/GX99) 1 screw (+BVTP3 ×...
  • Page 20: Hi-amp Board (ec55)

    HCD-EC55/EC77/GX99 3-18. HI-AMP BOARD (EC55) 1 screw (+BV3 × 10 ) 2 two transisitor screws 3 HI-AMP board 3-19. DC FAN 1 four screws (+BVTP3 × 10 ) 2 DC fan...
  • Page 21: Test Mode

    HCD-EC55/EC77/GX99 Ver. 1.1 SECTION 4 TEST MODE [MC COLD RESET] [CD SLOT LOCK] The cold reset clears all data including preset data stored in the This mode is for the antitheft of CD disc in shop. (not for transport) memory to initial conditions. Execute this mode when returning Procedure: 1.
  • Page 22 HCD-EC55/EC77/GX99 [CD SERVO TEST MODE] CD Servo Test Mode Tree: Higher layer Lower layer of menu hierarchy This mode can check the servo system operations of the optical S Curve Mode LD ON pick-up system (= optical unit + BD board).
  • Page 23 HCD-EC55/EC77/GX99 [CD SERVICE MODE] Contents of “CDM Errors” Error display example This mode can move the SLED of the optical pick-up, and also can M 0 FF 11 42 turn the optical pick-up laser power on and off. 1 2 3 4 Procedure: 1.
  • Page 24 HCD-EC55/EC77/GX99 3 It indicates the on-going processing of optical pick-up system (= optical unit + BD board) when the trouble has occurred. 01: The CD SHIP mode processing is in progress. 02: The POWER OFF processing is in progress. 03: The INITIALIZE processing is in progress.
  • Page 25: Mechanical Adjustments

    HCD-EC55/EC77/GX99 SECTION 5 SECTION 6 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS • Precaution DECK SECTION 0 dB=0.775 V (EXCEPT US, CND) 1. Clean the following parts with a denatured-alcohol-moistened swab : 1. Demagnetize the record/playback head with a head record/playback head pinch roller demagnetizer.
  • Page 26 HCD-EC55/EC77/GX99 Adjustment Location: Record/Playback/Erase Head CD SECTION 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. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.
  • Page 27 HCD-EC55/EC77/GX99 Ver. 1.1 0 dB=1 µV AM FREQUENCY COVERAGE ADJUSTMENT TUNER SECTION (US, Canadian, Australian models) [AM] Adjustment Part Frequency Display Reading on Digital Voltmeter Setting: 1.5 ± 0.1 V L801 530 kHz FUNCTION: TUNER 8 ± 0.5 V Confirmation...
  • Page 28 HCD-EC55/EC77/GX99 [FM Auto Stop Check] Adjustment Location and Connecting Points generator – MAIN BOARD (Component Side) – CN801 AM Tracking ANTENNA Adjustment L805 75 Ω FM Frequency L801 L804 Coverage Adjustment AM Frequency FM Tracking Coverage Adjustment Adjustment Procedure: 1. Turn the power on.
  • Page 29: Diagrams

    HCD-EC55/EC77/GX99 Ver. 1.2 SECTION 7 DIAGRAMS • Circuit Boards Location THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) EC77/GX99 DECK board (EXCEPT US, CND) HI-AMP board...
  • Page 30: Block Diagram - Bd/driver Section

    HCD-EC55/EC77/GX99 7-1. BLOCK DIAGRAM — BD/DRIVER SECTION — SYSTEM CONTROLLER IC301 (1/2) OPTICAL PICK-UP BLOCK CD MECHANISM DECK (KSM-213DCP) DETECTOR +3.3V I-SW3 IC101 I-CD-SW3 +1.7V RF AMP,DSP,MP3 I-SW1 IC201 I-CD-SW1 I-CHACK I-CD-CHACK FN11(A) +1.5V 3.3V +1.5V FP11(B) I-SW2 FN12(C) I-CD-SW2...
  • Page 31: Block Diagram - Tuner Section

    HCD-EC55/EC77/GX99 7-2. BLOCK DIAGRAM — TUNER SECTION — AM TRACKING L805 IC801 TUNER AM/FM ,DET,OSC AM RF-IN L-CH L-CH MIX, PLL ,IF AMP IF TRANSFORMER L-OUT T801 CF801 D801 450kHz FM DETECTOR L801 AM-MIX AM IF-IN CN801 AM FREQUENCY TUNER...
  • Page 32: Block Diagram - Main Section

    HCD-EC55/EC77/GX99 Ver. 1.1 7-3. BLOCK DIAGRAM — MAIN SECTION — AUDIO SELECTOR IC101 TONE CONTROLLER IC602 IC102 J401 R-CH R-CH J402 POWER AUDIO IN AUDIO-L L-OUT PHONES (HIGH) SYSTEM CONTROLLER R-OUT R-CH TUNER-L IC301(2/2) EC77/GX99 TAPE-L O-FUNC-CLK TB601 CD-L DATA...
  • Page 33: Printed Wiring Board - Bd90 Board

    HCD-EC55/EC77/GX99 Ver. 1.2 7-4. PRINTED WIRING BOARD — BD90 BOARD — • See page 29 for Circuit Boards Location. :Uses unleaded solder. BD90 BOARD (SIDE B) BD90 BOARD (SIDE A) M401 (SPINDLE) S201 (LIMIT) C403 C404 R402 M402 (SLED) C122...
  • Page 34: Schematic Diagram - Bd90 Board

    HCD-EC55/EC77/GX99 Ver. 1.2 7-5. SCHEMATIC DIAGRAM — BD90 BOARD — • See page 48 for Waveforms. • See page 48 for IC Block Diagram. • See page 51 for IC Pin Function Description. R127 C107 C136 R126 R125 R142 R139...
  • Page 35: Printed Wiring Boards - Main Section

    HCD-EC55/EC77/GX99 Ver. 1.2 7-6. PRINTED WIRING BOARDS — MAIN SECTION — • See page 29 for Circuit Boards Location. :Uses unleaded solder. HI-AMP BOARD DC FAN MAIN BOARD CN101 (Page 41) • Semiconductor Location Ref. No. Location CN801 R803 D802...
  • Page 36: Schematic Diagram - Main Section (1/2)

    HCD-EC55/EC77/GX99 Ver. 1.2 7-7. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • See page 48 for Waveform. • See page 49 for IC Block Diagram. (1/2) MAIN BOARD R724,R725,R726 AM FREQUENCY 15 EC77 : US,CND/GX99 COVERAGE 22 EXCEPT EC77 : US,CND/GX99...
  • Page 37: Schematic Diagram - Main Section (2/2)

    HCD-EC55/EC77/GX99 Ver. 1.2 7-8. SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — • See page 48 for IC Block Diagram. MAIN BOARD (1/2) MAIN BOARD (1/2) (Page 36) (Page 36) 1 2 3 4 9 10 12 13 16 17 18...
  • Page 38: Printed Wiring Board - Panel Board

    HCD-EC55/EC77/GX99 7-9. PRINTED WIRING BOARD — PANEL BOARD — • See page 29 for Circuit Boards Location. :Uses unleaded solder. KEY-LEFT BOARD PANEL BOARD CN401 (Page 40) • Semiconductor Location W304 LCD301 (LIQUID CRYSTAL DISPLAY) Ref. No. Location R382 D301...
  • Page 39: Schematic Diagram - Panel Board

    HCD-EC55/EC77/GX99 Ver. 1.2 7-10. SCHEMATIC DIAGRAM — PANEL BOARD — • See page 48 for Waveforms. • See page 54 for IC Pin Function Description. PANEL BOARD X302 5MHz TP301 R301 O-TU-CE O-TU-CE TP302 R302 100 O-TU-DI O-TU-DI TP303 R303 100...
  • Page 40: Printed Wiring Boards - Key Section

    HCD-EC55/EC77/GX99 7-11. PRINTED WIRING BOARDS — KEY SECTION — • See page 29 for Circuit Boards Location. 7-12. SCHEMATIC DIAGRAM — KEY SECTION — :Uses unleaded solder. KEY-LEFT BOARD KEY-LEFT BOARD R404 T P409 KEY- 0 T P410 T P411...
  • Page 41: Printed Wiring Board - Hi-amp Board

    HCD-EC55/EC77/GX99 7-13. PRINTED WIRING BOARD — HI-AMP BOARD — • See page 29 for Circuit Boards Location. :Uses unleaded solder. HI-AMP BOARD IC101 IC102 EC55/EC77 : EC77:US,CND/GX99 AEP,RU,E2,E3,E51,MX C153 C106 C105 C104 C103 EC55:AEP,UK/ R151 R119 EC77:AEP,RU R106 R105 C113...
  • Page 42: Schematic Diagram - Hi-amp Board

    HCD-EC55/EC77/GX99 Ver. 1.2 7-14. SCHEMATIC DIAGRAM — HI-AMP BOARD — • See page 50 for IC Block diagram. HI-AMP BOARD IC101 IC102 IC101 IC B/D IC102 POWER AMP POWER AMP EC77 EC55 GX99 EXCEPT US,CND US,CND IC101 STK433-060 STK433-070 IC102...
  • Page 43: Printed Wiring Board - Low-amp Board (ec77/gx99)

    HCD-EC55/EC77/GX99 7-15. PRINTED WIRING BOARD — LOW-AMP BOARD (EC77/GX99) — • See page 29 for Circuit Boards Location. :Uses unleaded solder. EC77/GX99 LOW-AMP BOARD IC101 IC102 EC77:EXCEPT US,CND EC77:US,CND/GX99 C153 C106 C105 C104 C103 R151 R105 R106 R119 C113 R152...
  • Page 44: Schematic Diagram - Low-amp Board (ec77/gx99)

    HCD-EC55/EC77/GX99 Ver. 1.2 7-16. SCHEMATIC DIAGRAM — LOW-AMP BOARD (EC77/GX99) — • See page 50 for IC Block diagram. EC77/GX99 LOW-AMP BOARD IC101 IC102 IC101 IC B/D IC101 STK433-070 EC77 : EXCEPT US,CND IC102 POWER AMP POWER AMP IC102 STK433-090-E EC77 : US,CND/GX99...
  • Page 45: Printed Wiring Boards - Deck Section (except Us,cnd)

    HCD-EC55/EC77/GX99 Ver. 1.1 7-17. PRINTED WIRING BOARDS — DECK SECTION (EXCEPT US, CND) — 7-18. SCHEMATIC DIAGRAM — DECK SECTION (EXCEPT US, CND) — • See page 29 for Circuit Boards Location. :Uses unleaded solder. EXCEPT US,CND C546 C516 DECK BOARD R544 0 .
  • Page 46: Printed Wiring Board - Pt Board (except Ec55: Us,cnd)

    HCD-EC55/EC77/GX99 Ver. 1.2 7-19. PRINTED WIRING BOARD — PT BOARD (EXCEPT EC55: US, CND) — 7-20. SCHEMATIC DIAGRAM — PT BOARD (EXCEPT EC55: US, CND) — • See page 29 for Circuit Boards Location. :Uses unleaded solder. EXCEPT EC55 : US,CND...
  • Page 47: Printed Wiring Board Pt (u) Board (ec55: Us,cnd)

    HCD-EC55/EC77/GX99 Ver. 1.2 7-21. PRINTED WIRING BOARD — PT (U) BOARD (EC55: US, CND) — 7-22. SCHEMATIC DIAGRAM — PT (U) BOARD (EC55: US, CND) — • See page 29 for Circuit Boards Location. :Uses unleaded solder. EC55 : US,CND...
  • Page 48 HCD-EC55/EC77/GX99 • Waveforms • IC Block Diagrams – BD90 Board – – PANEL Board – – BD90 Board – IC101 ia (RFI) IC301 qd (X0A) IC201 TK63115SCL-G@GT IC401 BA5826SFP-E2 (CD PLAY mode) VIN 1 VOUT VO1(-) VOL(-) VO1(+) GND 2 LEVEL 2.1 Vp-p...
  • Page 49 HCD-EC55/EC77/GX99 – MAIN Board – IC801 LV23003VA 36 FM RF-IN AM RF-IN 35 GND2 34 FMRF-OUT 33 VCC2 FM-MIX 32 FM-OSC GND1 AM-MIX 31 AM-OSC VCC1 30 BO2 29 BO1 BUFFER LOW-PASS 28 A-OUT FILTER 27 A-IN 26 PD 25 AGC...
  • Page 50 HCD-EC55/EC77/GX99 – HI-AMP Board – IC101 STK433-060 (EC55)/STK433-070 (EC77: EXCEPT US, CND) IC102 STK433-090-E (EC77: US, CND/GX99) Pre Driver Pre Driver Bias Circuit 10 11 12 – LOW-AMP Board (EC77/GX99) – IC101 STK433-070 (EC77: EXCEPT US, CND) IC102 STK433-090-E (EC77: US, CND/GX99)
  • Page 51 HCD-EC55/EC77/GX99 • IC Pin Function Description BD90 BOARD IC101 TC94A70FG-006 (RF AMP, DSP, MP3) Pin No. Pin Name Description AVSS3 — Ground terminal (Used CD analog 3.3V) RFZi RF ripple zero cross signal input terminal RFRP RF ripple signal output terminal...
  • Page 52 HCD-EC55/EC77/GX99 Pin No. Pin Name Description Pio0 REQ output terminal Pio1 General purpose I/O input terminal (Not used (Open)) Pio2 BSIF GATE signal input terminal (Not used (Open)) Pio3 General purpose I/O input terminal (Not used (Open)) VSS1 — Ground terminal (Digital 3.3V) VDDT3 —...
  • Page 53 HCD-EC55/EC77/GX99 Pin No. Pin Name Description FPi1(B) Main beam input terminal (Connect to pin diode B) TPi(F) Sub beam AMP input terminal (Connect to pin diode F) TNPC Capacitor connect terminal to the middle pointof TNI/TPI input register TNi(E) Sub beam AMP input terminal (Connect to pin diode E)
  • Page 54 HCD-EC55/EC77/GX99 Ver. 1.2 PANEL BOARD IC301 MB90803PF-G-130E1 (SYSTEM CONTROLLER) Pin No. Pin Name Description O-POWER Power relay control signal output terminal O-AMP-ON AMP control signal output terminal O-FUNC-CLK Function select control serial data signal to IC602 O-FUNC-DATA Function select control serial clock signal to IC602...
  • Page 55 HCD-EC55/EC77/GX99 Pin No. Pin Name Description O-CD-ON CD power control signal input terminal No used (Open) — Use write (Not used (Fixed to “L”)) — Use write (Not used (Fixed to “H”)) — Use write (Not used (Fixed to “H”))
  • Page 56 HCD-EC55/EC77/GX99 Pin No. Pin Name Description SEG29 Segment signal output to the LCD SEG30 Segment signal output to the LCD SEG31 Segment signal output to the LCD...
  • Page 57: Exploded Views

    HCD-EC55/EC77/GX99 Ver. 1.1 SECTION 8 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Abbreviation The components identified by mark 0 or may have some difference from the original : Argentine model dotted line with mark 0 are critical for safety.
  • Page 58: Front Panel Section

    HCD-EC55/EC77/GX99 Ver. 1.2 8-2. FRONT PANEL SECTION supplied supplied supplied supplied supplied supplied supplied supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 2-890-817-01 WINDOW A-1218-562-A PANEL BOARD, COMPLETE (EC77: AEP) (EC55: US, CND, AEP, UK, RU, KR, SP, AUS)
  • Page 59: Chassis Section (ec77/gx99)

    HCD-EC55/EC77/GX99 Ver. 1.1 8-3. CHASSIS SECTION (EC77/GX99) supplied supplied supplied supplied supplied supplied supplied TP002 supplied supplied supplied CD mechanism deck section supplied (EC77:US,CND/GX99) supplied supplied supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-832-838-21 CABLE, FLEXIBLE FLAT (13 CORE)
  • Page 60: Chassis Section (ec55)

    HCD-EC55/EC77/GX99 Ver. 1.2 8-4. CHASSIS SECTION (EC55) (EXCEPT US,CND) (US,CND) supplied supplied supplied supplied supplied TP003 TP003 supplied supplied supplied supplied CD mechanism deck section supplied supplied supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark...
  • Page 61: Top Section (except Us, Cnd)

    HCD-EC55/EC77/GX99 Ver. 1.1 8-5. TOP SECTION (EXCEPT US, CND) supplied supplied supplied supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-252-827-01 SCREW (B2.6), (+) BV TAPPING 3-701-748-00 CLAMP 2-649-132-21 BUTTON (CASS) 4-951-620-01 SCREW (2.6X8), +BVTP 3-921-725-01 SCREW (2.6X10), +PWH...
  • Page 62: Cd Mechanism Deck Section

    HCD-EC55/EC77/GX99 Ver. 1.2 8-6. CD MECHANISM DECK SECTION supplied supplied supplied supplied S201 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-1217-914-A BD90 BOARD, COMPLETE 1-832-404-21 CABLE, FLEXIBLE FLAT (16 CORE) 4-985-672-01 SCREW (+PTPWHM2.6), FLOATING 1-797-193-12 MECHANICAL, CD (DLM3A23-11)
  • Page 63: Electrical Parts List

    HCD-EC55/EC77/GX99 SECTION 9 BD90 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they When indicating parts by reference number, parts list may be different from the parts are seldom required for routine service.
  • Page 64 HCD-EC55/EC77/GX99 BD90 DECK Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R108 1-216-864-11 SHORT CHIP R408 1-216-825-11 METAL CHIP 2.2K 1/10W R110 1-216-833-11 METAL CHIP 1/10W R414 1-216-829-11 METAL CHIP 4.7K 1/10W R111 1-216-809-11 METAL CHIP...
  • Page 65 HCD-EC55/EC77/GX99 DECK HI-AMP Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CONNECTOR > R533 1-216-837-11 METAL CHIP 1/10W R534 1-216-835-11 METAL CHIP 1/10W CN501 1-815-449-11 PIN, CONNECTOR (PWB) 8P R535 1-216-829-11 METAL CHIP 4.7K 1/10W <...
  • Page 66 HCD-EC55/EC77/GX99 Ver. 1.2 HI-AMP JACK KEY-CD Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < DIODE > R124 1-216-841-11 METAL CHIP 1/10W (EC55) D121 6-501-730-01 DIODE MAZ8051GMLS0 (EC55) R125 1-216-845-11 METAL CHIP 100K 1/10W D151 6-500-335-01 DIODE MC2838-T112-1...
  • Page 67 HCD-EC55/EC77/GX99 Ver. 1.2 KEY-LEFT KEY-RIGHT LOW-AMP Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark KEY-LEFT BOARD C113 1-126-968-11 ELECT 100uF (EC77: AEP, RU, E2, E3, E51, MX) ************** C113 1-128-576-11 ELECT 100uF < CONNECTOR > (EC77: US, CND/GX99)
  • Page 68 HCD-EC55/EC77/GX99 Ver. 1.2 LOW-AMP MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R111 1-216-841-11 METAL CHIP 1/10W C616 1-100-566-91 CERAMIC CHIP 0.1uF R112 1-216-841-11 METAL CHIP 1/10W (EC77/GX99) R119 1-216-813-11 METAL CHIP 1/10W C617 1-100-566-91 CERAMIC CHIP 0.1uF...
  • Page 69 HCD-EC55/EC77/GX99 Ver. 1.2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C669 1-126-923-91 ELECT 220uF C805 1-117-863-11 CERAMIC CHIP 0.47uF 6.3V C670 1-162-927-11 CERAMIC CHIP 100PF C806 1-162-962-11 CERAMIC CHIP 470PF (EC55: EXCEPT AEP, UK, RU)
  • Page 70 HCD-EC55/EC77/GX99 Ver. 1.2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark CN608 1-779-289-11 CONNECTOR, FFC (LIF (NON-ZIF)) 21P L603 1-456-107-11 COIL, AIR-CORE * CN801 1-506-680-11 PLUG, CONNECTOR (2.5MM) 3P (ANTENNA) L604 1-456-107-11 COIL, AIR-CORE L801 1-456-596-11 COIL, MW OSC <...
  • Page 71 HCD-EC55/EC77/GX99 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R618 1-216-833-11 METAL CHIP 1/10W R677 1-216-833-11 METAL CHIP 1/10W R619 1-216-828-11 METAL CHIP 3.9K 1/10W R678 1-216-841-11 METAL CHIP 1/10W (EC55) R679 1-216-829-11 METAL CHIP 4.7K...
  • Page 72 HCD-EC55/EC77/GX99 MAIN PANEL Ref. No. Ref. No. Part No. Part No. Description Description Remark Remark Ref. No. Part No. Description Remark R727 1-216-829-11 METAL CHIP 4.7K 1/10W R728 1-216-829-11 METAL CHIP 4.7K 1/10W < RELAY > R729 1-216-845-11 METAL CHIP...
  • Page 73 HCD-EC55/EC77/GX99 Ver. 1.2 PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C332 1-162-970-11 CERAMIC CHIP 0.01uF Q306 1-801-806-11 TRANSISTOR DTC144EKA C340 1-165-176-11 CERAMIC CHIP 0.047uF Q307 8-729-600-22 TRANSISTOR 2SA1235-F Q308 1-801-806-11 TRANSISTOR DTC144EKA C341 1-164-156-11 CERAMIC CHIP 0.1uF...
  • Page 74 HCD-EC55/EC77/GX99 Ver. 1.2 PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R344 1-216-826-11 METAL CHIP 2.7K 1/10W R345 1-216-829-11 METAL CHIP 4.7K 1/10W R392 1-216-833-11 METAL CHIP 1/10W (EXCEPT AEP, UK) R346 1-216-841-11 METAL CHIP...
  • Page 75 HCD-EC55/EC77/GX99 Ver. 1.2 PT (U) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < TRANSFORMER > 0 108 1-775-790-81 CORD, POWER (AUS) 0 108 1-790-757-52 CORD, POWER (US, CND) 0 PT001 1-443-846-11 TRANSFORMER, POWER 0 108...
  • Page 76 HCD-EC55/EC77/GX99 MEMO...
  • Page 77 HCD-EC55/EC77/GX99 US Model Canadian Model SERVICE MANUAL HCD-EC55/EC77/GX99 AEP Model HCD-EC55/EC77 Ver. 1.2 2007.07 UK Model HCD-EC55 E Model HCD-EC55/EC77 SUPPLEMENT-1 Australian Model HCD-EC55/EC77 Subject: Board changed to suffix -13, -14 from suffix -12. Parts number of printed wiring board changed to suffix-13, -14 from suffix-12.
  • Page 78 HCD-EC55/EC77/GX99 DIAGRAMS THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) Note on Schematic Diagram: Note on Printed Wiring Boards: • X : parts extracted from the component side.
  • Page 79 HCD-EC55/EC77/GX99 Ver. 1.2 PRINTED WIRING BOARDS — MAIN SECTION — • :Uses unleaded solder. HI-AMP SUPPLEMENT-1 BOARD Page 9 CN101 DC FAN MAIN BOARD • Semiconductor Location Ref. No. Location CN801 D802 R803 L805 R810 D601 D806 EXCEPT ANTENNA JW744...
  • Page 80 HCD-EC55/EC77/GX99 Ver. 1.2 SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • See page 2 for Waveform. (1/2) MAIN BOARD R724,R725,R726 AM FREQUENCY 15 : EC77 : US,CND/GX99 COVERAGE 22 : EXCEPT EC77 : US,CND/GX99 D801 TP601 L801 9 . 2 1 6 .
  • Page 81 HCD-EC55/EC77/GX99 Ver. 1.2 SCHEMATIC DIAGRAM — MAIN SECTION (2/2) — MAIN BOARD (1/2) MAIN BOARD (1/2) SUPPLEMENT-1 SUPPLEMENT-1 Page 4 Page 4 1 2 3 4 9 10 12 13 16 17 18 MAIN BOARD (2/2) AEP,UK,RU,KR Q608 D614 CN603...
  • Page 82 HCD-EC55/EC77/GX99 Ver. 1.2 PRINTED WIRING BOARD — PANEL BOARD — • :Uses unleaded solder. KEY-LEFT BOARD PANEL BOARD CN401 SUPPLEMENT-1 • Semiconductor Page 8 Location W304 LCD301 (LIQUID CRYSTAL DISPLAY) Ref. No. Location R382 D301 JW316 D302 Q301 JW361 JW355...
  • Page 83 HCD-EC55/EC77/GX99 Ver. 1.2 SCHEMATIC DIAGRAM — PANEL BOARD — • See page 2 for Waveforms. PANEL BOARD X302 5MHz TP301 R301 O-TU-CE O-TU-CE TP302 R302 100 O-TU-DI O-TU-DI TP303 R303 100 O-TU-CLK O-TU-CLK TP304 R304 100 I-TU-ANSD I-TU-ANSD TP305 R305 100...
  • Page 84 HCD-EC55/EC77/GX99 Ver. 1.2 PRINTED WIRING BOARDS — KEY SECTION — • :Uses unleaded solder. SCHEMATIC DIAGRAM — KEY SECTION — KEY-LEFT BOARD KEY-LEFT BOARD R404 T P409 KEY- 0 T P410 T P411 PANEL BOARD AVCC SW302 SW301 T P412...
  • Page 85 HCD-EC55/EC77/GX99 Ver. 1.2 PRINTED WIRING BOARD — HI-AMP BOARD — • :Uses unleaded solder. HI-AMP BOARD EC77:US,CND/GX99 EC55-EC77: IC101 IC102 EXCEPT US,CND C153 C106 C105 C104 C103 EC55:AEP,UK,KR R151 R119 EC77:AEP,RU R106 R105 JW116 EC55 R130 R120 EC77/GX99 JW117 EC55:EXCEPT...
  • Page 86 HCD-EC55/EC77/GX99 Ver. 1.2 SCHEMATIC DIAGRAM — HI-AMP BOARD — HI-AMP BOARD IC101 IC102 IC101 IC102 POWER AMP POWER AMP EC77 EC55 GX99 EXCEPT US,CND US,CND IC101 STK433-060 STK433-070 IC102 R159 R155 STK433-090-E R101,R102 R167 R151 2.2k 0.22 EC77 : US,CND/GX99...
  • Page 87 HCD-EC55/EC77/GX99 Ver. 1.2 PRINTED WIRING BOARD — LOW-AMP BOARD (EC77/GX99) — • :Uses unleaded solder. EC77/GX99 LOW-AMP BOARD EC77:US,CND/GX99 IC101 IC102 EC77:EXCEPT US,CND R121 C153 C106 C105 R152 C104 C103 R151 R106 R105 R119 AEP,RU JW116 R120 C113 R130 JW117...
  • Page 88 HCD-EC55/EC77/GX99 Ver. 1.2 SCHEMATIC DIAGRAM — LOW-AMP BOARD (EC77/GX99) — EC77/GX99 LOW-AMP BOARD IC101 IC102 IC101 IC101 STK433-070 EC77 : EXCEPT US,CND IC102 POWER AMP POWER AMP IC102 STK433-090-E EC77 : US,CND/GX99 R159 R155 R167 R151 2.2k 0.22 R161 R101,R102...
  • Page 89 HCD-EC55/EC77/GX99 Ver. 1.2 PRINTED WIRING BOARDS — DECK SECTION (EXCEPT US, CND) — • :Uses unleaded solder. SCHEMATIC DIAGRAM — DECK SECTION (EXCEPT US, CND) — EXCEPT US,CND C546 C516 DECK BOARD R544 0 . 1 R506 R510 C506 R508 EXCEPT US,CND 0 .
  • Page 90 HCD-EC55/EC77/GX99 Ver. 1.2 PRINTED WIRING BOARD — PT BOARD (EXCEPT EC55: US, CND) — • :Uses unleaded solder. SCHEMATIC DIAGRAM — PT BOARD (EXCEPT EC55: US, CND) — EXCEPT EC55 : US,CND PT BOARD AC IN EXCEPT EC55 : US,CND...
  • Page 91 HCD-EC55/EC77/GX99 Ver. 1.2 ELECTRICAL PARTS LIST DECK NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they When indicating parts by reference number, parts list may be different from the parts are seldom required for routine service.
  • Page 92 HCD-EC55/EC77/GX99 Ver. 1.2 DECK HI-AMP Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R512 1-216-845-11 METAL CHIP 100K 1/10W C113 1-128-576-11 ELECT 100uF R513 1-216-845-11 METAL CHIP 100K 1/10W (EC77: US, CND/GX99) R514 1-216-845-11 METAL CHIP...
  • Page 93 HCD-EC55/EC77/GX99 HI-AMP JACK KEY-CD KEY-LEFT KEY-RIGHT Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R104 1-216-830-11 METAL CHIP 5.6K 1/10W C406 1-162-964-11 CERAMIC CHIP 0.001uF (EC55) < JACK > R104 1-216-834-11 METAL CHIP 1/10W (EC77: AEP, RU)
  • Page 94 HCD-EC55/EC77/GX99 Ver. 1.2 KEY-RIGHT LOW-AMP Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark SW316 1-762-875-21 SWITCH, KEYBOARD ( –) < RESISTOR > SW317 1-762-875-21 SWITCH, KEYBOARD (DSGX) SW318 1-762-875-21 SWITCH, KEYBOARD (EQ) R101 1-216-823-11 METAL CHIP 1.5K...
  • Page 95 HCD-EC55/EC77/GX99 Ver. 1.2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-1218-507-A MAIN BOARD, COMPLETE (GX99) C638 1-110-563-11 CERAMIC CHIP 0.068uF A-1218-539-A MAIN BOARD, COMPLETE (EC77: US, CND) C639 1-162-968-11 CERAMIC CHIP 0.0047uF 10% A-1218-580-A MAIN BOARD, COMPLETE (EC77: AEP, RU)
  • Page 96 HCD-EC55/EC77/GX99 Ver. 1.2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C685 1-164-315-11 CERAMIC CHIP 470PF C827 1-165-176-11 CERAMIC CHIP 0.047uF (AEP, UK, RU, KR) C828 1-162-927-11 CERAMIC CHIP 100PF C686 1-162-915-11 CERAMIC CHIP 10PF 0.5PF...
  • Page 97 HCD-EC55/EC77/GX99 Ver. 1.2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D621 6-501-722-01 DIODE MAZ8043GMLS0 Q622 8-729-120-28 TRANSISTOR 2SC1623-L5L6 Q624 8-729-036-86 TRANSISTOR KTC3203Y-AT D622 6-501-752-01 DIODE MAZ8082GMLS0 Q801 8-729-120-28 TRANSISTOR 2SC1623-L5L6 D623 8-719-062-51 DIODE 1PS226-115...
  • Page 98 HCD-EC55/EC77/GX99 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R632 1-216-845-11 METAL CHIP 100K 1/10W R690 1-216-825-11 METAL CHIP 2.2K 1/10W (EC77/GX99) R691 1-216-833-11 METAL CHIP 1/10W R633 1-216-845-11 METAL CHIP 100K 1/10W R692 1-216-829-11 METAL CHIP 4.7K...
  • Page 99 HCD-EC55/EC77/GX99 Ver. 1.2 MAIN PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R806 1-216-841-11 METAL CHIP 1/10W < VIBRATOR > R807 1-216-837-11 METAL CHIP 1/10W R808 1-216-801-11 METAL CHIP 1/10W X801 1-813-917-11 VIBRATOR, CRYSTAL (75kHz)
  • Page 100 HCD-EC55/EC77/GX99 Ver. 1.2 PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CONNECTOR > Q311 8-729-024-43 TRANSISTOR 2SA1365-T112-1EF Q312 8-729-024-43 TRANSISTOR 2SA1365-T112-1EF CN301 1-779-564-21 CONNECTOR, FFC (LIF (NON-ZIF)) 27P Q313 8-729-024-43 TRANSISTOR 2SA1365-T112-1EF CN302 1-784-735-11 CONNECTOR, FFC 13P...
  • Page 101 HCD-EC55/EC77/GX99 Ver. 1.2 PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R348 1-216-841-11 METAL CHIP 1/10W R393 1-216-825-11 METAL CHIP 2.2K 1/10W R349 1-216-817-11 METAL CHIP 1/10W (MX) R350 1-216-841-11 METAL CHIP 1/10W R393 1-216-833-11 METAL CHIP...
  • Page 102 HCD-EC55/EC77/GX99 Ref. No. Part No. Description Remark 0 PT001 1-445-105-11 TRANSFORMER, POWER (E2, E3, E51, MX, KR, AR, SP, AUS) < RELAY > 0 RY001 1-755-334-11 RELAY, AC POWER (EC55: AEP, UK, RU/EC77: US, CND, AEP, RU/GX99) 0 RY002 1-755-496-11 RELAY (E2, E3, E51, MX, KR, AR, SP, AUS) <...
  • Page 103 HCD-EC55/EC77/GX99 MEMO...
  • Page 104: Revision History

    HCD-EC55/EC77/GX99 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the top of the revised page allows you to jump to the next revised page. Ver. Date Description of Revision 2007.01 2007.04...

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