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Sony HCD-GT22 Service Manual

Compact disc deck receiver.
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HCD-GT22/GT44/GT55
SERVICE MANUAL
Ver. 1.0 2007.06
HCD-GT22 is the amplifier, USB, CD player, tape
deck and tuner section in MHC-GT22.
HCD-GT44 is the amplifier, USB, CD player, tape
deck and tuner section in MHC-GT44.
HCD-GT55 is the amplifier, USB, CD player, tape
deck and tuner section in MHC-GT55.
Amplier section
HCD-GT55
The following are measured at AC 120, 127,
220, 240V 50/60Hz
Front speaker
Power output (rated): 110 W + 110 W
(at 6 , 1 kHz, 1% THD)
RMS output power (reference):
200 W + 200 W (per channel at 6 ,
1 kHz, 10% THD)
Subwoofer
RMS output power (reference): 190 W
(at 6 , 80 Hz, 10% THD)
HCD-GT44
The following are measured at AC 120, 127,
220, 240V 50/60Hz
Front speaker
Power output (rated): 90 W + 90 W
(at 6 , 1 kHz, 1% THD)
RMS output power (reference):
150 W + 150 W (per channel at 6 ,
1 kHz, 10% THD)
Subwoofer
RMS output power (reference): 150 W
(at 6 , 80 Hz, 10% THD)
Sony Corporation
9-887-722-01
Personal Audio Division
2007F05-1
Published by Sony Techno Create Corporation
© 2007.06
Photo: HCD-GT55
Model Name Using Similar Mechanism
CD
CD Mechanism Type
Section
Base Unit Name
Optical Pick-up Block Name
TAPE
Model Name Using Similar Mechanism
Section
Tape Transport Mechanism Type
SPECIFICATIONS
HCD-GT22
The following are measured at AC 120, 127,
220, 240V 50/60Hz
Power output (rated): 110 W + 110 W
(at 6 , 1 kHz, 1% THD)
RMS output power (reference):
200 W + 200 W (per channel at 6 ,
1 kHz, 10% THD)
Inputs
AUDIO (phono jack): voltage 250 mV,
impedance 47 kilohms
MIC (phone jack): sensitivity 1 mV,
impedance 10 kilohms
(USB) port: Type A
Outputs
PHONES (stereo mini jack): accepts
headphones of 8
or more
SPEAKER: accepts impedance of 6 to 16
SUB WOOFER OUT (HCD-GT55/GT44
only): accepts impedance of 6 to 16
COMPACT DISC DECK RECEIVER
E Model
HCD-GT22/GT44/GT55
Australian Model
HCD-GT22/GT44
NEW
CDM74KF-K6BD91UR-WOD
BU-K6BD91UR-WOD74
KSM-213DCP
NEW
CWN42FF609
USB section
Supported bit rate
MP3 (MPEG 1 Audio Layer-3):
32 – 320 kbps, VBR
Sampling frequencies
MP3 (MPEG 1 Audio Layer-3):
32/44.1/48 kHz
Transfer speed
Full-Speed
Supported USB device
Mass Storage Class
Maximum current
500 mA
CD player section
System: Compact disc and digital audio
system
Laser: Semiconductor laser ( =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
– Continued on next page –

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Table of Contents

   Also See for Sony HCD-GT22

   Summary of Contents for Sony HCD-GT22

  • Page 1 HCD-GT22/GT44/GT55 Australian Model Ver. 1.0 2007.06 HCD-GT22/GT44 HCD-GT22 is the amplifier, USB, CD player, tape deck and tuner section in MHC-GT22. HCD-GT44 is the amplifier, USB, CD player, tape deck and tuner section in MHC-GT44. HCD-GT55 is the amplifier, USB, CD player, tape deck and tuner section in MHC-GT55.
  • Page 2 WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN as a CLASS 1 THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. LASER product. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE This marking is PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR located on the rear IN SUPPLEMENTS PUBLISHED BY SONY.
  • Page 3: Table Of Contents

    HCD-GT22/GT44/GT55 TABLE OF CONTENTS SERVICING NOTES 7-24. Printed Wiring Boards ..........4 – SUB WOOFER Section (GT44/GT55) – ..... 48 7-25. Schematic Diagram GENERAL ..............6 – SUB WOOFER Section (GT44/GT55) – ..... 49 7-26. Printed Wiring Boards – PANEL Section – ..... 50 DISASSEMBLY 7-27.
  • Page 4: Servicing Notes

    HCD-GT22/GT44/GT55 SECTION 1 SERVICING NOTES MODEL IDENTIFICATION NOTES ON HANDLING THE OPTICAL PICK-UP – Model Number Label – BLOCK OR BASE UNIT 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 5 HCD-GT22/GT44/GT55 SERVICE POSITION In checking the CD mechanism deck, prepare jig (extension cable J-2501-248-A (27 core/300 mm))/J-2501-077-A (13 core/300 mm) MAIN board Connect jig (extension cable J-2501-248-A) to the flexible flat cable (27 core) and CD board (CN202). CD mechanism deck...
  • Page 6: General

    HCD-GT22/GT44/GT55 SECTION 2 This section is extracted from instruction manual. GENERAL Location of Controls Unit Remote HCD-GT55 Unit: PRESET EQ, Press to select the CD function. GROOVE, SURROUND Remote: EQ TUNER/BAND Press to select the sound effect. Press to select the TUNER function.
  • Page 7: Disassembly

    HCD-GT22/GT44/GT55 SECTION 3 DISASSEMBLY This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW 3-2. CASE (SIDE-L), CASE (SIDE-R) (Page 8) 3-3. CASE (TOP) (Page 8) 3-4. LID (CD) (Page 9) 3-5. CD MECHANISM DECK (CDM74KF-K6BD91UR-WOD) (Page 9) 3-6.
  • Page 8: Case (side-l), Case (side-r)

    HCD-GT22/GT44/GT55 Note: Follow the disassembly procedure in the numerical order given. 3-2. CASE (SIDE-L), CASE (SIDE-R) 3 case (side-L) 2 two screws 1 three screws (BVTP3 (case 3 TP2) 6 case (side-R) 5 two screws (BVTP3 4 three screws (case 3 TP2) 3-3.
  • Page 9: Lid (cd)

    HCD-GT22/GT44/GT55 3-4. LID (CD) 3 four claws 4 lid (CD) 1 Turn the gear (loading A) to the direction of the arrow. 3-5. CD MECHANISM DECK (CDM74KF-K6BD91UR-WOD), USB BOARD 8 CD mechanism deck (CDM74KF-K6BD91UR-WOD) 1 flexible flat (13 core) cable...
  • Page 10: Front Panel Block

    HCD-GT22/GT44/GT55 3-6. FRONT PANEL BLOCK 6 front panel block 4 two connectors (CN301, CN302) 1 flexible flat cable (27 core) (CN901) 2 flexible flat cable (11 core) (CN201) 3 flexible flat cable (13 core) 5 four screws (CN061) (BVTP3 × 8) 3-7.
  • Page 11: Back Panel Block

    HCD-GT22/GT44/GT55 3-8. BACK PANEL BLOCK 5 back panel block 1 flexible flat cable (9 core) (tuner (FM/AM)) 3 connector (CN701) (except Australian model) 2 connector (CN041) 4 two screws (BVTP3 (GT44/GT55) 4 two screws (BVTP3 4 two screws (BVTP3 3-9. MAIN BOARD...
  • Page 12: Cd Board

    HCD-GT22/GT44/GT55 3-10. CD BOARD 1 screw 2 screw (BVTP3 × 8) (BVTP2.6) 6 CD board 3 cover (OP) 4 flexible flat (16 core) cable (CN301) 5 Remove soldering from the four points. CD machanism deck (bottom side) 3-11. DRIVER BOARD, SW BOARD 1 two screws (BTTP (M2.6))
  • Page 13: Optical Pick-up Block (ksm-213d)

    HCD-GT22/GT44/GT55 3-12. OPTICAL PICK-UP BLOCK (KSM-213D) 1 floating screw (PTPWH M2.6) 5 two insulators 2 h older (213) assy qd optical pick-up block 4 two coil springs (KSM-213D) (insulator) 8 two insulators 7 two coil springs 3 two floating screws (insulator) (PTPWH M2.6)
  • Page 14: Motor (tb) Board

    HCD-GT22/GT44/GT55 3-14. MOTOR (TB) BOARD 2 stopper 1 stopper 7 t able motor assy (M741) 3 wire (flat type) (5 core) (CN742) 8 MOTOR (TB) board 6 Remove the two solderings of motor. 5 two screws (BTTP (M2.6)) 3-15. MOTOR (LD) BOARD 2 two screws (BTTP (M2.6))
  • Page 15: Test Mode

    HCD-GT22/GT44/GT55 SECTION 4 TEST MODE 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 16 Table operation time-out (Table does not move to the target are displayed on the fluorescent indicator tube. position within the specified time) *1) GRL2H : HCD-GT22 In the chucking down operation, the operation was retried GRL2HS : HCD-GT44 by the maximum number of times but the operation could...
  • Page 17 HCD-GT22/GT44/GT55 The 9th and 10 th digit from the left indicates: 5 REPEAT LIMIT CANCEL MODE (Tray status display) Number of repeat for CD playback is 5 times when the repeat mode The 9th and 10th digit from the left indicates which target processing is “REPEAT”.
  • Page 18 HCD-GT22/GT44/GT55 PANEL TEST MODE This mode is used to check the fluorescent indicator tube, LEDs, phones jack, keys and control knobs. Procedure: 1. Press the button to turn the power on. , [SURROUND] and [TUNER] simultaneously. 2. Press three buttons of 3.
  • Page 19: Mechanical Adjustments

    HCD-GT22/GT44/GT55 SECTION 5 MECHANICAL ADJUSTMENTS PRECAUTION 1. Clean the following parts with a denatured-alcohol-moistened swab : record/playback head pinch roller erase head rubber belts capstan idlers 2. Demagnetize the record/playback head with a head demagnetizer. (Do not bring the head magnetizer close to the erase head.)
  • Page 20: Electrical Adjustments

    HCD-GT22/GT44/GT55 SECTION 6 ELECTRICAL ADJUSTMENTS 4. After the adjustments, apply suitable locking compound to DECK SECTION 0 dB=0.775 V the pats adjusted. 1. Demagnetize the record/playback head with a head Adjustment Location: Playback Head (DECK-A) demagnetizer. Record/Playback/Erase Head (DECK-B) 2. Do not use a magnetized screwdriver for the adjustments.
  • Page 21 HCD-GT22/GT44/GT55 TUNER SECTION CD SECTION FM TUNE LEVEL CHECK Note: 1. CD Block is basically constructed to operate without adjustment. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. signal generator 3. Use an oscilloscope with more than 10 MΩ impedance.
  • Page 22 HCD-GT22/GT44/GT55 MEMO...
  • Page 23: Diagrams

    HCD-GT22/GT44/GT55 SECTION 7 DIAGRAMS 7-1. BLOCK DIAGRAM – CD SERVO, USB Section – DETECTOR BD+3.3V FNi1 (A) 97 FPi1 (B) CD-L (Page 24) AGCi RFEQo 81 RFi 94 FNi2 (C) 82 RFRPi R-CH 96 FPi2 (D) RFRP RFZi USB CONTROLLER...
  • Page 24: Block Diagram - Main Section

    HCD-GT22/GT44/GT55 7-2. BLOCK DIAGRAM – MAIN Section – AUDIO+9V R-ch is omitted due to same as L-ch. • Abbreviation RV801 SIGNAL PATH AR : Argentina model MIC LEVEL E2 : 120V AC Area in E model J801 : TUNER (FM/AM)
  • Page 25: Block Diagram - Amp Section

    HCD-GT22/GT44/GT55 7-3. BLOCK DIAGRAM – AMP Section – HP IN (Page 24) AUDIO+9V J803 R-CH PHONES BASS AGC R-CH (Page 24) IC441 (GT22/GT55) IC441 (GT44) JK441 –1 BUFFER POWER AMP IC251 (Page 24) – SPEAKER – –2 R-CH MUTING STANDBY SWITCH...
  • Page 26: Block Diagram - Panel, Power Amp Section

    HCD-GT22/GT44/GT55 7-4. BLOCK DIAGRAM – PANEL, POWER AMP Section – PT901 MAIN POWER TRANSFORMER FLUORESCENT INDICATOR D908 TUBE –27V –VFL REGULATOR FLUORESCENT INDICATOR Q902 TUBE DRIVER SYSTEM CONTROLLER IC701 IC901 (4/4) F908 O-NJM3427A-DATA RECT F909 D401 –VH O-NJM3427A2-CLK DR35 [S0] –...
  • Page 27 HCD-GT22/GT44/GT55 • Note For Printed Wiring Boards and Schematic Diagrams • Circuit Boards Location Note on Printed Wiring Board: Note on Schematic Diagram: • X : parts extracted from the component side. • All capacitors are in µF unless otherwise noted. (p: pF)
  • Page 28: Printed Wiring Board - Cd Board

    HCD-GT22/GT44/GT55 7-5. PRINTED WIRING BOARD – CD Board – See page 27 for Circuit Boards Location. : Uses unleaded solder. CD BOARD (CONDUCTOR SIDE) CD BOARD (COMPONENT SIDE) M401 (SLED) S201 (LIMIT) C404 C403 R402 IC401 TP124(VC) C122 R139 M402...
  • Page 29: Schematic Diagram - Cd Board

    HCD-GT22/GT44/GT55 7-6. SCHEMATIC DIAGRAM – CD Board – • See page 36 for Waveforms. • See page 58 for IC Block Diagrams. • See page 61 for IC Pin Function Description. C107 C136 R142 R139 R129 Q301 CN202 R143 C112...
  • Page 30: Printed Wiring Boards - Changer Section

    HCD-GT22/GT44/GT55 • See page 27 for Circuit Boards Location. 7-7. PRINTED WIRING BOARDS – CHANGE Section – : Uses unleaded solder. • Semiconductor Location Ref. No. Location D701 D711 MOTOR (LD) BOARD IC701 IC712 IC731 Q731 M751 (LOADING) DRIVER BOARD...
  • Page 31: Schematic Diagram - Changer Section

    HCD-GT22/GT44/GT55 7-8. SCHEMATIC DIAGRAM – CHANGE Section – • See page 58 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 ROTARY ENCODER DISC TABLE...
  • Page 32: Printed Wiring Board - Usb Board

    HCD-GT22/GT44/GT55 7-9. PRINTED WIRING BOARD – USB Board – See page 27 for Circuit Boards Location. : Uses unleaded solder. USB BOARD (CONDUCTOR SIDE) USB BOARD (COMPONENT SIDE) (NC) CN904 R928 R921 C901 C914 IC915 R938 RB922 RB921 R945 R983...
  • Page 33: Schematic Diagram - Usb Board

    HCD-GT22/GT44/GT55 7-10. SCHEMATIC DIAGRAM – USB Board – • See page 36 for Waveforms. • See page 58 for IC Block Diagrams. • See page 61 for IC Pin Function Description. S-RAM IC921 IS61LV6416-10T C912 C910 C909 R916 CN907 BOOT...
  • Page 34: Printed Wiring Board - Tc Board

    HCD-GT22/GT44/GT55 7-11. PRINTED WIRING BOARD – TC Board – • See page 27 for Circuit Boards Location. : Uses unleaded solder. • Semiconductor Location Ref. No. Location D301 (Page 37) D401 MAIN BOARD IC301 CN202 IC401 TC BOARD Q301 Q302...
  • Page 35: Schematic Diagram - Tc Board

    HCD-GT22/GT44/GT55 7-12. SCHEMATIC DIAGRAM – TC Board – See page 36 for Waveforms Q301 2SJ461 TC BOARD PB SWITCH(DECK-A) IC301(1/3) R309 C301 <<4>> NJM14558V-TE2 <<4>> <<4>> 1000p <<4>> {4.2} {4.2} {4.2} {4.2} CN301 R321 JR315 R301 L-CH R305 R317 220k 4<<4>>{4.2}...
  • Page 36 HCD-GT22/GT44/GT55 • Waveforms – CD Board – – TC Board – – PANEL Board – IC101 ia (RFi) Q453 (Base) (REC mode) IC701 rh (XTb) (CD play mode) 3.2 Vp-p 2.1 Vp-p 0.5 to 1.3 Vp-p 30.4 µs 800 ns 1 V/DIV, 20 µ...
  • Page 37: Printed Wiring Boards - Main Section

    HCD-GT22/GT44/GT55 • See page 27 for Circuit Boards Location. 7-13. PRINTED WIRING BOARDS – MAIN Section – : Uses unleaded solder. • Semiconductor Location Ref. No. Location Ref. No. Location D001 IC901 X902 M001 D005 E-10 IC902 X901 (FAN) D006...
  • Page 38: Schematic Diagram - Main Section (1/4)

    HCD-GT22/GT44/GT55 7-14. SCHEMATIC DIAGRAM – MAIN Section (1/4) – See page 36 for Waveforms. See page 61 for IC Pin Function Description. MAIN BOARD (1/4) G-OUT R963 R958 R957 V-OUT R996 R962 R994 B-OUT R961 R992 Q922 Q923 R999 R925...
  • Page 39: Schematic Diagram - Main Section (2/4)

    HCD-GT22/GT44/GT55 See page 58 for IC Block Diagrams. 7-15. SCHEMATIC DIAGRAM – MAIN Section (2/4) – MAIN BOARD (2/4) MAIN R124 2.2k BOARD MAIN (3/4) BOARD (1/4) R128 (Page R232 R126 R229 R234 R130 (Page 6.8k TAPE-STAT (GT55) C167 C168...
  • Page 40: Schematic Diagram - Main Section (3/4)

    HCD-GT22/GT44/GT55 7-16. SCHEMATIC DIAGRAM – MAIN Section (3/4) – • See page 58 for IC Block Diagrams. MAIN BOARD (3/4) CN301 DATA DO(RST) R330 DI(CTS) USB-SO(TXD) USB-SI(RXD) R332 A-IN R327 GATE REQ-U BOARD ST-REQ CN907 USB-RST USB-RST (Page R328 LRCK DVSS DVDD+3.3V...
  • Page 41: Schematic Diagram - Main Section (4/4)

    HCD-GT22/GT44/GT55 7-17. SCHEMATIC DIAGRAM – MAIN Section (4/4) – MAIN BOARD (4/4) ∗ R254 10k(GT22/GT55) C273 (GT44/GT55) R278 R279 ∗ 4.7k(GT44) 0.01 R279 4.7k 18k(GT44) 15k(GT55) C274 ∗ R252 C277 R285 IC252(1/3) 120k 5.6k(GT22) C260 C258 2.7k(GT44) NJM4558V-TE2 R256 R252 R254 4.7k(GT55)
  • Page 42: Printed Wiring Board - Mic Board

    HCD-GT22/GT44/GT55 • See page 27 for Circuit Boards Location. 7-18. PRINTED WIRING BOARD – MIC Board – : Uses unleaded solder. (Page 37) (Page 32) USB BOARD MAIN BOARD CN903 MIC BOARD CN061 (CHASSIS) (CHASSIS) R816 R842 R843 C821 R841...
  • Page 43: Schematic Diagram - Mic Board

    HCD-GT22/GT44/GT55 7-19. SCHEMATIC DIAGRAM – MIC Board – MIC BOARD R802 C807 C805 C806 R807 4.7k C810 R811 C804 R803 220p IC801 1000p 100k 0.022 0.022 100k Q801 NJM4558V-TE2 R809 2SC3052EF-T1-LEF MUTING R810 220k R806 J801 RV801 R808 C809 C802...
  • Page 44: Printed Wiring Board

    HCD-GT22/GT44/GT55 • See page 27 for Circuit Boards Location. 7-20. PRINTED WIRING BOARD – AMP Board (GT22/GT55) – : Uses unleaded solder. • Semiconductor Location Ref. No. Location D401 JK441 D402 SPEAKER D441 D443 D445 D446 AMP BOARD D447 D448...
  • Page 45: Schematic Diagram - Amp Board (gt22/gt55)

    HCD-GT22/GT44/GT55 • See page 58 for IC Block Diagrams. 7-21. SCHEMATIC DIAGRAM – AMP Board (GT22/GT55) – IC441 STK415-130 AMP BOARD IC441 IC B/D POWER AMP D447 30PRA20FC D446 D448 UDZW-TE17-16B 30PRA20FC C446 100p R459 100k C445 D443 MA111-TX 100p...
  • Page 46: Printed Wiring Board - Amp Board (gt44)

    HCD-GT22/GT44/GT55 • See page 27 for Circuit Boards Location. 7-22. PRINTED WIRING BOARD – AMP Board (GT44) – : Uses unleaded solder. JK441 SPEAKER AMP BOARD R407 R417 JW465 JL413 R418 R419 IC441 L442 JL403 R491 D443 JW646 JL401 Q489...
  • Page 47: Schematic Diagram - Amp Board (gt44)

    HCD-GT22/GT44/GT55 • See page 58 for IC Block Diagrams. 7-23. SCHEMATIC DIAGRAM – AMP Board (GT44) – IC B/D IC441 AMP BOARD POWER AMP IC441 STK403-130-E R449 1/2W L441 1.7uH RY441 R461 R467 C490 R415 R413 JL411 R496 C489 R495...
  • Page 48: Printed Wiring Boards - Sub Woofer Section (gt44/gt55)

    HCD-GT22/GT44/GT55 • See page 27 for Circuit Boards Location. 7-24. PRINTED WIRING BOARDS – SUB WOOFER Section (GT44/GT55) – : Uses unleaded solder. (GT55) (GT44) (Page 44) (Page 46) SW-SP BOARD BOARD BOARD SUB WOOFER BOARD CN443 CN443 CN504 CN502...
  • Page 49: Schematic Diagram - Sub Woofer Section (gt44/gt55)

    HCD-GT22/GT44/GT55 • See page 58 for IC Block Diagrams. 7-25. SCHEMATIC DIAGRAM – SUB WOOFER Section (GT44/GT55) – SUB WOOFER BOARD IC501 STK404-130S IC501 IC B/D POWER AMP D507 R531 4.7k MA111-TX R511 0.22 Q507 2SC3052EF-T1-LEF TEMPERATURE DETECT R510 Q502 0.22...
  • Page 50: Printed Wiring Boards - Panel Section

    HCD-GT22/GT44/GT55 • See page 27 for Circuit Boards Location. 7-26. PRINTED WIRING BOARDS – PANEL Section – : Uses unleaded solder. PANEL BOARD Q714 R714 JW603 C732 R713 FL701 R715 JW602 JW601 JW605 Q713 FLUORESCENT INDICATOR TUBE JW604 R754 R752...
  • Page 51: Schematic Diagram - Panel Section

    HCD-GT22/GT44/GT55 7-27. SCHEMATIC DIAGRAM – PANEL Section – • See page 36 for Waveforms. • See page 58 for IC Block Diagrams. FL701 PANEL BOARD FLUORESCENT INDICATOR TUBE 10 11 12 21 22 23 24 49 50 C732 CN601 C731...
  • Page 52: Printed Wiring Boards - Key Section

    HCD-GT22/GT44/GT55 • See page 27 for Circuit Boards Location. : Uses unleaded solder. 7-28. PRINTED WIRING BOARDS – KEY Section – KEY LEFT BOARD KEY RIGHT BOARD S602 – 608, S628, 631 – 638 S641 – 649 R655 S631 DISC 1...
  • Page 53: Schematic Diagram - Key Section

    HCD-GT22/GT44/GT55 7-29. SCHEMATIC DIAGRAM – KEY Section – KEY TOP BOARD R644 R645 R647 R641 R642 R643 R646 R648 1.5k 2.2k 4.7k S641 S642 S643 S644 S645 S646 S647 S648 S649 ENTER FORCUS GUITAR VOCAL FORCUS FORCUS BASS (GUITAR) (VOCAL)
  • Page 54: Printed Wiring Board

    HCD-GT22/GT44/GT55 7-30. PRINTED WIRING BOARD – TRANS Board (GT22/GT55) – See page 27 for Circuit Boards Location. : Uses unleaded solder. JL914 R915 Q903 R904 Q902 JW923 D906 FH916 JL916 FH915 C909 F908 C910 TRANS BOARD JL923 RY901 C908 FH907...
  • Page 55: Schematic Diagram

    HCD-GT22/GT44/GT55 7-31. SCHEMATIC DIAGRAM – TRANS Board (GT22/GT55) – TRANS BOARD GT22:MX,AR,AUS/ GT55:MX,AR PT901 (GT22:AUS) MAIN POWER JW907 JW902 TRANSFORMER F909 T8AL 250V FH910 JL919 FH909 JW901 GT22:E2,E3,E13,E51/ F905 GT55:E2,E51 T6.3AL 250V JL920 CN903 FH912 GT22:MX,AR,AUS/ JL901 FH911 230-240V 220V...
  • Page 56: Printed Wiring Board - Trans Board (gt44)

    HCD-GT22/GT44/GT55 • See page 27 for Circuit Boards Location. : Uses unleaded solder. 7-32. PRINTED WIRING BOARD – TRANS Board (GT44) – TRANS BOARD RY901 CN901 R910 R911 R908 JL914 (AC IN) Q903 R915 JW900 FH909 F909 FH910 (E2, E3, E13, E51)
  • Page 57: Schematic Diagram - Trans Board (gt44)

    HCD-GT22/GT44/GT55 7-33. SCHEMATIC DIAGRAM – TRANS Board (GT44) – TRANS BOARD (AUS) (MX,AR,AUS) JW907 JW902 (AR) JW908 (E2,E3,E13,E51) (E2,E3,E13,E51) JW912 JW901 PT901 (E2,E3,E13,E51,MX) MAIN POWER JW909 TRANSFORMER (E2,E3,E13,E51) F909 CN903 T8AL 250V 230-240V T 220V 120V JL903 FH910 FH909 JL904...
  • Page 58 HCD-GT22/GT44/GT55 • IC Block Diagrams – MAIN Board – – CD Board – IC401 BA5826SFP-E2 IC201 TK63115SCL-G@GL IC102 R2S15208SP VO1(–) REFIN 1 REF AMP REFOUT VIN 1 D.BUFF VO4(–) THERMAL & VO1(+) D.BUFF OVER CURRENT LEVEL D.BUFF LIN 2 LOUT...
  • Page 59 HCD-GT22/GT44/GT55 IC301, 302 TC74HC4066AFT (EL) IC303 TC74VHC157FT (EKJ) SELECT 11 1 1I/O 1A 2 STROBE INPUT 1O/I 2 INPUT OUTPUT 2O/I 3 4I/O 11 12 OUTPUT INPUT 2I/O 4 4O/I INPUT OUTPUT 2C 5 3O/I GND 8 OUTPUT 3C 6...
  • Page 60: Panel Board

    HCD-GT22/GT44/GT55 – PANEL Board – IC701 NJU3427FA2 51 50 49 48 46 45 RESET SERIAL CIRCUIT BUFFER INSTRUCTION TIMING DUTY DECODER COUNTER COUNTER ADDRESS DISPLAY DR35 COUNTER DATA RAM DR34 DR33 DR32 SEGMENT TIMING DR31 DATA LATCH DECODER DR30 DR29...
  • Page 61 HCD-GT22/GT44/GT55 IC Pin Function Description CD BOARD IC101 TC94A70FG-008 (S, D) (CD-MP3 PROCESSOR) Pin No. Pin Name Description AVSS3 Ground terminal RFZi RF ripple zero crossing signal input terminal RFRP RF ripple signal output terminal SBAD/RFDC Sub beam addition signal or RF peak detection signal output terminal Not used...
  • Page 62 HCD-GT22/GT44/GT55 Pin No. Pin Name Description PIO0 Request signal output to the system controller or USB controller 49, 50 PIO1, PIO2 Not used PIO3 Gate signal input from the USB controller VSS1 Ground terminal VDDT3 Power supply terminal (+3.3 V)
  • Page 63 HCD-GT22/GT44/GT55 Pin No. Pin Name Description FNi1 (A) Main beam (A) input from the optical pick-up block FPi2 (D) Main beam (D) input from the optical pick-up block FPi1 (B) Main beam (B) input from the optical pick-up block TPi (F)
  • Page 64 HCD-GT22/GT44/GT55 USB BOARD IC901 TMP92CD28AFG-2CB4 (USB CONTROLLER) Pin No. Pin Name Description /RESET Reset signal input from the system controller "L": reset Ready to send signal input from the system controller 3, 4 NO USE Not used Function selection signal input terminal Fixed at "H" in this set DVCC Power supply terminal (+3.3 V)
  • Page 65 HCD-GT22/GT44/GT55 Pin No. Pin Name Description NO USE Not used DVSS Ground terminal Clear to send signal output to the system controller DATA Audio data input from the CD-MP3 processor CLOCK Audio data transfer clock signal input from CD-MP3 processor...
  • Page 66 HCD-GT22/GT44/GT55 MAIN BOARD IC901 uPD78F1165GF (S)-GAS-AX (SYSTEM CONTROLLER) Pin No. Pin Name Description O-SYS-MUTE Muting on/off control signal output terminal "L": muting on O-SWR Sub woofer speaker on/off relay drive signal output terminal (GT44/GT55) O-FRONT-SP- Power on/off control signal output for speaker relays...
  • Page 67 HCD-GT22/GT44/GT55 Pin No. Pin Name Description Serial data transfer clock signal output to the electrical volume and parametric equalizer (GT55) O-AUDIO-CLK Serial data transfer clock signal output to the electrical volume (GT22/GT44) Deck-A/B selection and recording/playback selection signal output terminal O-REC/PB "L": deck-B and playback, "H": deck-A and recording...
  • Page 68 HCD-GT22/GT44/GT55 Pin No. Pin Name Description Sub system clock output terminal (32.768 kHz) Sub system clock input terminal (32.768 kHz) FLMD0 Not used Main system clock output terminal (20 MHz) Main system clock input terminal (20 MHz) REGC External capacitor connection terminal for regulator...
  • Page 69: Exploded Views

    HCD-GT22/GT44/GT55 SECTION 8 EXPLODED VIEWS NOTE: -XX and -X mean standardized parts, so they Items marked “*” are not stocked since they : 120V AC area in E model may have some difference from the original are seldom required for routine service. Some : 240V AC area in E model one.
  • Page 70: Key Top Board Section

    Remark Ref. No. Part No. Description Remark 3-087-053-01 +BVTP2.6 (3CR) 4-217-485-21 EMBLEM (5-A), SONY 2-892-160-01 PANEL (HEAD-B) (GT22/GT44) X-2179-679-1 BUTTON FOCUS ASSY 2-892-159-01 PANEL (HEAD-A) (GT55) (BASS, VOCAL, GUITAR, ENTER, –) (GT55) 2-892-297-01 BUTTON (FOCUS) TOP (FOCUS, FOCUS, FOCUS, +) (GT55)
  • Page 71: Tc Mecha Deck Section

    HCD-GT22/GT44/GT55 8-3. TC MECHA DECK SECTION not supplied not supplied supplied not supplied not supplied PANEL board section Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-417-656-22 MECHA DECK (CWN42FF609) 2-683-560-01 BELT (BF) 1-832-826-21 CABLE, FLEXIBLE FLAT (11 CORE) 4-235-777-01 BELT (FR) 3-087-053-01 +BVTP2.6 (3CR)
  • Page 72: Panel Board Section

    HCD-GT22/GT44/GT55 8-4. PANEL BOARD SECTION not supplied (KEY LEFT borad) not supplied (VOLUME board) not supplied (KEY RIGHT board) S651 supplied with S651 not supplied not supplied (MIC board) front panel section Ref. No. Part No. Description Remark Ref. No.
  • Page 73: Front Panel Section

    HCD-GT22/GT44/GT55 8-5. FRONT PANEL SECTION not supplied not supplied Note 1: Ref. No. 203 and Ref. No. 233 are parts glued together. When you exchange Ref. No. 203 or Ref. No. 233, exchange simultaneously. Note 2: Ref. No. 213 and Ref. No. 214 are parts glued together.
  • Page 74: Main Board Section

    HCD-GT22/GT44/GT55 8-6. MAIN BOARD SECTION not supplied (GT22: E2, E3, E13, E51, MX, AR/ GT44: E2, E3, E13, E51, MX, AR/ GT55) not supplied (D-LIGHT SYNC board) (GT44/GT55) not supplied M001 POWER board, SUB WOOFER board section not supplied (SW-SP board)
  • Page 75: Power Board, Sub Woofer Board Section

    HCD-GT22/GT44/GT55 8-7. POWER BOARD, SUB WOOFER BOARD SECTION (GT44/GT55) not supplied not supplied (SUB WOOFER board) not supplied not supplied not supplied (5V REG board) not supplied (AMP board) not supplied not supplied Ref. No. Part No. Description Remark Ref. No.
  • Page 76: Chassis Section

    HCD-GT22/GT44/GT55 8-8. CHASSIS SECTION (GT22/GT55) F908 F904 F905 PT901 (GT22/GT55) not supplied (TRANS board) F907 F909 F906 not supplied not supplied not supplied (TC board) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 0 F904 1-832-824-21 CABLE, FLEXIBLE FLAT (11 CORE) 1-532-506-33 FUSE (T6.3AL/250V) (GT22/GT55)
  • Page 77: Cd Mechanism Deck Section-1 (cdm74kf-k6bd91ur-wod)

    HCD-GT22/GT44/GT55 8-9. CD MECHANISM DECK SECTION-1 (CDM74KF-K6BD91UR-WOD) M741 optical pick-up section Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-218-253-62 SCREW (M2.6), +BTTP 4-243-819-01 GEAR (GENEVA) 1-828-938-51 WIRE (FLAT TYPE) (5 CORE) 4-243-816-11 TRAY 1-687-134-12 MOTOR (TB) BOARD...
  • Page 78: Cd Mechanism Deck Section-2 (cdm74kf-k6bd91ur-wod)

    HCD-GT22/GT44/GT55 8-10. CD MECHANISM DECK SECTION-2 (CDM74KF-K6BD91UR-WOD) S711 not supplied M751 S201 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-1103-756-B DRIVER BOARD, COMPLETE 4-243-822-02 LEVER (LIFTER) 4-218-253-52 SCREW (M2.6), +BTTP X-2102-809-3 PULLEY (KH) ASSY 1-687-669-12 SW BOARD...
  • Page 79: Electrical Parts List

    HCD-GT22/GT44/GT55 SECTION 9 5V REG ELECTRICAL PARTS LIST NOTE: : 220V – 230V AC area in E model Due to standardization, replacements in the RESISTORS : Chilean and Peruvian models parts list may be different from the parts All resistors are in ohms.
  • Page 80 HCD-GT22/GT44/GT55 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D402 6-500-360-01 DIODE D10XB20 (GT22/GT55) R411 1-216-797-11 METAL CHIP 1/10W D441 6-500-334-01 DIODE MC2836-T112-1 (GT22/GT55) D443 8-719-404-50 DIODE MA111-TX D445 6-501-179-01 DIODE UDZW-TE17-16B (GT22/GT55) R412 1-216-797-11 METAL CHIP...
  • Page 81 HCD-GT22/GT44/GT55 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R467 1-216-797-11 METAL CHIP 1/10W C108 1-164-360-11 CERAMIC CHIP 0.1uF (GT44) C109 1-164-360-11 CERAMIC CHIP 0.1uF 0 R468 1-215-871-11 METAL OXIDE 2.2K (GT22/GT55) C110 1-164-360-11 CERAMIC CHIP 0.1uF...
  • Page 82 HCD-GT22/GT44/GT55 D-LIGHT SYNC Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CONNECTOR > R208 1-216-809-11 METAL CHIP 1/10W CN202 1-784-835-51 CONNECTOR, FFC (LIF (NON-ZIF)) 27P R209 1-216-809-11 METAL CHIP 1/10W CN301 1-770-425-51 CONNECTOR, FFC/FPC 16P...
  • Page 83 HCD-GT22/GT44/GT55 D-LIGHT SYNC DRIVER KEY RIGHT KEY LEFT Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < RESISTOR > R751 1-249-425-11 CARBON 4.7K 1/4W ************************************************************ R701 1-216-849-11 METAL CHIP 220K 1/10W R702 1-216-842-11 METAL CHIP 1/10W...
  • Page 84 HCD-GT22/GT44/GT55 KEY RIGHT KEY TOP MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R637 1-216-829-11 METAL CHIP 4.7K 1/10W A-1271-844-A MAIN BOARD, COMPLETE (GT44: E51, AR) A-1271-845-A MAIN BOARD, COMPLETE (GT44: E3, E13) < SWITCH >...
  • Page 85 HCD-GT22/GT44/GT55 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C144 1-137-374-11 MYLAR 0.047uF C182 1-126-947-11 ELECT 47uF (GT44/GT55) C145 1-162-968-11 CERAMIC CHIP 0.0047uF 10% C211 1-126-961-11 ELECT 2.2uF C146 1-162-968-11 CERAMIC CHIP 0.0047uF 10% C212 1-126-957-11 ELECT 0.22uF...
  • Page 86 HCD-GT22/GT44/GT55 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CONNECTOR > IC303 6-707-870-01 IC TC74VHC157FT (EKJ) CN002 1-815-444-11 PIN, CONNECTOR (PWB) 3P IC901 (Not supplied) IC uPD78F1165GF (S)-GAS-AX * CN031 1-573-094-11 SOCKET, CONNECTOR 13P...
  • Page 87 HCD-GT22/GT44/GT55 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q921 8-729-620-07 TRANSISTOR 2SC3052EF-T1-LEF (GT55) R129 1-216-842-11 METAL CHIP 1/10W Q922 8-729-620-07 TRANSISTOR 2SC3052EF-T1-LEF (GT55) (GT22: E3, E13, E51, MX, AR, AUS/GT44: E3, E13, E51, MX, AR, AUS/GT55: E51, MX, AR)
  • Page 88 HCD-GT22/GT44/GT55 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R202 1-216-825-11 METAL CHIP 2.2K 1/10W R279 1-216-836-11 METAL CHIP 1/10W R211 1-216-832-11 METAL CHIP 8.2K 1/10W (GT44) R212 1-216-825-11 METAL CHIP 2.2K 1/10W R280 1-216-821-11 METAL CHIP...
  • Page 89 HCD-GT22/GT44/GT55 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R913 1-216-821-11 METAL CHIP 1/10W R914 1-216-833-11 METAL CHIP 1/10W R974 1-216-809-11 METAL CHIP 1/10W R975 1-216-809-11 METAL CHIP 1/10W R915 1-216-833-11 METAL CHIP 1/10W R976...
  • Page 90 HCD-GT22/GT44/GT55 MOTOR (LD) MOTOR (TB) PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C817 1-164-156-11 CERAMIC CHIP 0.1uF R844 1-216-841-11 METAL CHIP 1/10W C821 1-164-156-11 CERAMIC CHIP 0.1uF R845 1-216-836-11 METAL CHIP 1/10W C822 1-164-156-11 CERAMIC CHIP 0.1uF...
  • Page 91 HCD-GT22/GT44/GT55 PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D604 6-501-691-01 LED 1L434FV22D0TDF01 (STREAM) R666 1-216-821-11 METAL CHIP 1/10W (GT22/GT44) R671 1-216-821-11 METAL CHIP 1/10W D605 6-501-451-01 LED 1L4344B22COCDT02 (STREAM) (GT55) R672 1-216-821-11 METAL CHIP...
  • Page 92 HCD-GT22/GT44/GT55 PANEL SENSOR SUB WOOFER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < IC > < SWITCH > IC501 6-600-091-01 IC STK404-130S S601 1-762-875-21 SWITCH, KEYBOARD (DISPLAY) S611 1-762-875-21 SWITCH, KEYBOARD (ILLUMINATION) < JUMPER RESISTOR >...
  • Page 93 HCD-GT22/GT44/GT55 SW-SP Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-687-669-12 SW BOARD C456 1-130-483-00 MYLAR 0.01uF C461 1-164-315-11 CERAMIC CHIP 470PF ********* C462 1-164-315-11 CERAMIC CHIP 470PF S751 1-786-514-11 SWITCH, LEVER (SLIDE) C466 1-162-968-11 CERAMIC CHIP 0.0047uF 10%...
  • Page 94 HCD-GT22/GT44/GT55 TRANS Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R440 1-216-833-11 METAL CHIP 1/10W < RESISTOR > R441 1-216-864-11 SHORT CHIP R442 1-216-841-11 METAL CHIP 1/10W R301 1-216-841-11 METAL CHIP 1/10W R443 1-216-845-11 METAL CHIP...
  • Page 95 HCD-GT22/GT44/GT55 TRANS Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < FUSE HOLDER > C910 1-162-919-11 CERAMIC CHIP 22PF FH907 1-533-217-41 HOLDER, FUSE C912 1-162-915-11 CERAMIC CHIP 10PF 0.5PF FH908 1-533-217-41 HOLDER, FUSE C913 1-107-826-11 CERAMIC CHIP 0.1uF...
  • Page 96 HCD-GT22/GT44/GT55 VOLUME Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R932 1-216-809-11 METAL CHIP 1/10W < ROTARY ENCODER > R933 1-216-864-11 SHORT CHIP R934 1-216-833-11 METAL CHIP 1/10W S651 1-480-109-11 ENCODER, ROTARY (MASTER VOLUME) R937 1-216-809-11 METAL CHIP...
  • Page 97 HCD-GT22/GT44/GT55 MEMO...
  • Page 98: Revision History

    HCD-GT22/GT44/GT55 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...

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  • ANDRES ZAPATA Dec 23, 2016 01:25:
    Thanks for helping me with this service manual..
  • ANDRES ZAPATA Dec 23, 2016 01:57:
    THANKS FOR THIS INTERESTIN​G SERVICE MANUAL