Sony HCD-GN77D Service Manual
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Sony HCD-GN77D Service Manual

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3 7 63 1515 0
SERVICE MANUAL
Ver 1.1 2003.08
HCD-GN77D is the amplifier, DVD
player, tape deck and tuner section in
MHC-GN77D.
TE
L 13942296513
Amplifier section
The following are measured at AC 120, 127, 220, 240V 50/60 Hz
DIN power output (rated)
Front speaker:
Center speaker:
Surround speaker:
Continuous RMS power output (reference)
Front speaker:
Center speaker:
Surround speaker:
Inputs
GAME (VIDEO):
GAME (AUDIO):
(phono jacks)
MD/VIDEO (AUDIO) IN: voltage 450 mV/250 mV,
(phono jacks)
MIC:
(phone jack)
Outputs
AUDIO OUT:
(phono jacks)
VIDEO OUT:
(phono jack)
COMPONENT VIDEO
www
OUT: Y:
PB/CB:
PB/CR:
.
Sony Corporation
9-877-454-02
2003H02-1
Home Audio Company
C 2003.08
Published by Sony Engineering Corporation
http://www.xiaoyu163.com
Model Name Using Similar Mechanism
DVD Mechanism Type
DVD
Section
Base Unit Name
Optical Pick-up Name
Tape
Model Name Using Similar Mechanism
Section
Tape Transport Mechanism Type
110 + 110 watts (6 ohms at 1 kHz, DIN)
30 watts (8 ohms at 1 kHz, DIN)
30 + 30 watts (8 ohms at 1 kHz, DIN)
150 + 150 watts (6 ohms at 1 kHz, 10% THD)
40 watts (8 ohms at 1 kHz, 10% THD)
40 + 40 watts (8 ohms at 1 kHz, 10% THD)
1 Vp-p, 75 ohms (phono jack)
Voltage 250 mV,
impedance 47 kilohms
impedance 47 kilohms
sensitivity 1 mV,
impedance 10 kilohms
Voltage 250 mV
impedance 1 kilohms
max. output level 1 Vp-p,
unbalanced, Sync.
negative load impedance 75 ohms
1 Vp-p, 75 ohms
0.7 Vp-p, 75 ohms
x
ao
u163
0.7 Vp-p, 75 ohms
y
i
http://www.xiaoyu163.com
HCD-GN77D
2 9
8
Q Q
3
6 7
1 3
1 5
SPECIFICATIONS
S VIDEO OUT
(4-pin/mini-DIN jack):
PHONES:
(stereo mini jack)
FRONT SPEAKER:
SUBWOOFER OUT:
(phono jack)
SURROUND SPEAKER: accepts impedance of 8 ohms to 16 ohms
CENTER SPEAKER:
Disc player section
Laser
Frequency response
Video color system format NTSC, PAL
(except Latin American models)
DVD DIGITAL OUT (OPTICAL)
(Square optical connector jack, rear panel)
Wave length
MiNi Hi-Fi COMPONENT SYSTEM
co
.
9 4
2 8
E Model
NEW
CDM74D-DVBU23
DVBU23
TDP022W
HCD-GN800
CWM43RR23
0 5
8
2 9
9 4
2 8
Y: 1 Vp-p, unbalanced, Sync negative
C: 0.286 Vp-p load impedance 75 ohms
accepts headphones of 8 ohms or more
accepts impedance of 6 to 16 ohms
Voltage 250 mV
impedance 1 kilohms
accept impedance of 8 ohms to 16 ohms
Semiconductor laser
(DVD: λ = 650 nm, CD: λ = 780 nm)
Emission duration: continuous
DVD (PCM 48 kHz): 2 Hz – 22 kHz = (±1dB)
CD: 2 Hz – 20 kHz (±0.5 dB)
660 nm
– Continued on next page –
m
9 9
9 9

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Do you have a question about the HCD-GN77D and is the answer not in the manual?

Questions and answers

Israil
May 17, 2025

Sound problem hai sir

User image 682855fe08cea
0
1 comments:
Mr. Anderson
May 22, 2025

Common sound problems with the Sony HCD-GN77D may include:

1. Muted Output – Controlled by components like Q503, Q504, Q581, Q621, Q671, and Q652 in the muting circuit.
2. No Sound Due to Overload – Overload detection circuits (Q301, Q341, Q351, Q501, Q551) may cut audio output.
3. Thermal Cutoff – Thermal sensors (e.g., TH502) may shut down audio if the system overheats.
4. Speaker Relay Issues – Faulty relay drive circuits (e.g., Q516, Q517) may prevent speaker output.
5. Incorrect Impedance – Use of speakers outside the 6–16Ω range may cause audio failure or distortion.

These issues are linked to the system's protective and control circuits for audio output.

This answer is automatically generated

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Summary of Contents for Sony HCD-GN77D

  • Page 1 HCD-GN77D 3 7 63 1515 0 SERVICE MANUAL E Model Ver 1.1 2003.08 HCD-GN77D is the amplifier, DVD player, tape deck and tuner section in MHC-GN77D. Model Name Using Similar Mechanism DVD Mechanism Type CDM74D-DVBU23 Section Base Unit Name...
  • Page 2 Recording system 4-track 2-channel stereo • Never reuse a disconnected chip component. Frequency response 50 – 13,000 Hz (±3 dB), using Sony TYPE I • Notice that the minus side of a tantalum capacitor may be dam- cassette aged by heat.

  • Page 3: Table Of Contents

    HCD-GN77D 3 7 63 1515 0 TABLE OF CONTENTS SERVICING NOTES 7-7. Printed Wiring Board – DMB03 Board (Side A)– ..36 ..........4 Printed Wiring Board – DMB03 Board (Side B)– ..37 7-8. Schematic Diagram – DMB03 Board (1/8) – ....38 GENERAL 7-9.

  • Page 4: Servicing Notes

    HCD-GN77D SECTION 1 SERVICING NOTES 3 7 63 1515 0 • MODEL IDENTIFICATION NOTES ON HANDLING THE OPTICAL PICK-UP – Back Panel – BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electro- static break-down because of the potential difference generated PART No.

  • Page 5: General

    HCD-GN77D SECTION 2 This section is extracted from instruction manual. GENERAL 3 7 63 1515 0 Main unit ALPHABETICAL ORDER A - D SYMBOLS O - R ALBUM +/– qg OPEN/CLOSE Z 5 @/1 (power) 1 hH (play) qa...

  • Page 6: Remote Control

    HCD-GN77D This section is extracted from instruction manual. 3 7 63 1515 0 Remote Control ALPHABETICAL ORDER SYMBOLS T - Z A - D ALBUM +/– eg TAPE A/B 6 @/1 (power) 5 AMP MENU rd TUNER BAND rl...

  • Page 7: Disassembly

    HCD-GN77D SECTION 3 DISASSEMBLY 3 7 63 1515 0 • This set can be disassembled in the order shown below. CASE LOADING (PANEL) FRONT PANEL ASSY TUNER PACK, GAME IN BOARD, DVD MECHANISM DECK SUB TRANS BOARD TAPE MECHANISM DECK...

  • Page 8: Case

    HCD-GN77D 3 7 63 1515 0 Note: Follow the disassembly procedure in the numerical order given. 3-1. CASE 2 Five screws (+BVTT3 x 6) 7 Case Catcher 5 Slightly push down the edge of front panel not to break the catcher.

  • Page 9: Front Panel Assy

    HCD-GN77D 3 7 63 1515 0 3-3. FRONT PANEL ASSY 8 Front panel ASSY 3 Screw (BVTP3 x 10) 1 Two wires (flat type) 7 From CN607 on Game in board MAIN board CN402 CN304 4 From deck B head...

  • Page 10: Dvd Mechanism Deck

    HCD-GN77D 3 7 63 1515 0 3-5. DVD MECHANISM DECK 6 Connector 5 Connector (CN710) (CN711) 4 Wire (flat type) (20 core) 3 Two screws (BVTP3 x 10) qa Connector qs DVD mechanism deck 1 Three screws (BVTP3 x 10)

  • Page 11: Cd Switch Board, Display Board

    HCD-GN77D 3 7 63 1515 0 3-7. CD SWITCH BOARD, DISPLAY BOARD 1 Six screws 4 Five screws (+BVTP2.6 x 8) (+BVTP2.6 x 8) 2 CD SWITCH board 5 DISPLAY board 4 Five screws (+BVTP2.6 x 8) 3 Wire (flat type) (17 core)

  • Page 12: Back Panel, Subwoofer Board

    HCD-GN77D 3 7 63 1515 0 3-9. BACK PANEL, SUBWOOFER BOARD 6 Back panel with fan 1 Two screws qa Screw (+BVTT3 x 6) (+BVTP3 x 10) 2 Two screws qd SURROUND board (+BVTP3 x 10) 7 Connector CN303...

  • Page 13: Power Amp Board

    HCD-GN77D 3 7 63 1515 0 4 Two screws 3-11. POWER AMP BOARD (+BVTP3 x 10) 6 Two screws (+BVTP3 x 10) 3 Bracket (HS) 5 Three screws (+BVTP3 x 10) 2 Two screws (+BVTP3 x 10) 7 POWER AMP board...

  • Page 14: Sw Board, Driver Board

    HCD-GN77D 3 7 63 1515 0 3-13. SW BOARD, DRIVER BOARD 0 CN702 (flat type) 7 CN703 5 SW board 9 DRIVER board 6 CN704 4 Screw (+BTTP (M2.6)) 8 Two screws (+BTTP (M2.6)) 1 Screw (+BVTP 3x8) 1 Screw...

  • Page 15: Sensor Board

    HCD-GN77D 3 7 63 1515 0 3-15. SENSOR BOARD 1 Floating screw (+PTPWH M2.6) 2 Tray 8 Screw (+BTTP (M2.6)) 3 Belt (table) 9 SENSOR board 4 Foating screw (+PTPWH M2.6) 5 Pulley (table) 6 Floating screw (+PTPWH M2.6)

  • Page 16: Motor (Ld) Board

    HCD-GN77D 3 7 63 1515 0 3-17. MOTOR (LD) BOARD 2 Two screws (+BTTP (M2.6)) 4 Remove the two solderings of motor. 3 MOTOR (LD) board 5 Loading motor ASSY (M751) 1 Belt (loading) L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 17: Test Mode

    HCD-GN77D SECTION 4 TEST MODE 3 7 63 1515 0 [GC TEST MODE] * Check of Amplifier • This mode is used to check the fluorescent indicator tube, LED, 1. When button is pressed, GEQ increases to its maximum and model, destination, software version, volume, key and VACS a message “GEQ MAX”...
  • Page 18 HCD-GN77D 3 7 63 1515 0 [COLD RESET] [DVD SHIP MODE (WITHOUT MEMORY CLEAR)] • The cold reset clears all data including preset data stored in the • This mode moves the optical pick-up to the position durable to RAM to initial conditions.

  • Page 19: Mechanical Adjustments

    HCD-GN77D SECTION 5 SECTION 6 3 7 63 1515 0 MECHANICAL ADJUSTMENTS ELECTRICAL ADJUSTMENTS Precaution DECK SECTION 0 dB=0.775 V 1. Clean the following parts with a denatured alcohol-moistened swab: 1. Demagnetize the record/playback head with a head record/playback heads pinch rollers demagnetizer.
  • Page 20 HCD-GN77D 3 7 63 1515 0 2. Turn the adjustment screw and check output peaks. If the peaks Tape Speed Adjustment do not match for L-CH and R-CH, turn the adjustment screw DECK B so that outputs match within 1dB of peak.
  • Page 21 HCD-GN77D 3 7 63 1515 0 4. Mode: Record REC BIAS ADJUSTMENT DECK B Procedure: MAIN board In the MC test mode, the “REC memory mode” is convenient for MD/VIDEO (AUDIO) IN (J117) this adjustment. In the “REC memory mode” , when the REC starts 315 Hz, 50 mV (–23.8 dB)

  • Page 22: Video Section

    HCD-GN77D Ver 1.1 2003.08 3 7 63 1515 0 VIDEO SECTION RE-ADJUSTMENT OF THE SERVO CIRUIT The re-adjustment of the servo circuit is necessary when the part which relates to the servo circuit is replaced. Referring to SUPPLEMENT-1 “1. DRIVE AUTO ADJUSTMENT”...

  • Page 23: Diagrams

    HCD-GN77D SECTION 7 3 7 63 1515 0 DIAGRAMS Note on Schematic Diagram: Note on Printed Wiring Boards: • All capacitors are in µF unless otherwise noted. pF: µµF • X : parts extracted from the component side. •...

  • Page 24: Circuit Board Location

    HCD-GN77D 3 7 63 1515 0 7-1. CIRCUIT BOARD LOCATION TUNER PACK DMB03 board VIDEO board REGULATOR board CD SWITCH board SURROUND board SUB TRANS board TRANS board POWER AMP board L 13942296513 SENSOR board RF board SW board...
  • Page 25 HCD-GN77D 3 7 6 3 1 5 1 5 0 WAVEFORMS – MAIN BOARD – – DMB03 BOARD – – DISPLAY BOARD – – RF Board – IC501 qa XC-OUT IC901 r; XTAL IC601 is X OUT IC207 VDAC_1 IC001 1 DVD RFP 3.3 Vp-p...

  • Page 26: Block Diagram - Dvd Dsp (1/2) Section

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-2. BLOCK DIAGRAM – DVD DSP (1/2) Section – OPTICAL PICK-UP IC509 DOUT BLOCK IC001 CD DECODER (TDP022W) DVD/CD RF AMP SERVO DSP IC701 DVDRFP RFAC 50 RFAC DOUT...
  • Page 27 HCD-GN77D 3 7 6 3 1 5 1 5 0 – DVD DSP (2/2) Section– IC252 IC201 DATA OUT SELECTOR DOUT OPTICAL DOUT DOUT CD DIGITAL OUT DIGITAL OPTICAL IC302 D/A CONVERTER DVD DSP (1/2) IC207 VOUT7 DOWNMIX-L SECTION...

  • Page 28: Block Diagram - Tuner/Tape Deck Section

    HCD-GN77D 3 7 6 3 1 5 1 5 0 – TUNER/TAPE DECK Section – IC303 AMS DETECT R-CH Q390, 398, 399 MUTE Q306,389 DECK-A AIN1 L – CH EQ OUT1 MAIN TAPE L-CH PB OUT1 TAI1 SECTION HEAD (Page 29) R –...

  • Page 29: Block Diagram - Main Section

    HCD-GN77D 3 7 6 3 1 5 1 5 0 – MAIN Section – +5V REG. A+9V Q721 (+5V) RV722 MIC LEVEL J721 REC-L MIC OUT TUNER/TAPE MIC AMP MIC AMP (Page 28) IC722(1/2) IC722 (2/2) SECTION VC (+5V)

  • Page 30: Block Diagram - Amp Section

    HCD-GN77D 3 7 6 3 1 5 1 5 0 – AMP Section – MAIN J631 SECTION PHONES (Page 29) DBFB IC501 POWER AMP TM501(1/2) FRONT SPEAKER IMPEDANCE USE 6-16Ω RY501 PROTECT SWITCH OVER LOAD Q511 DETECT MUTING Q501, 551...

  • Page 31: Block Diagram - Display Section

    HCD-GN77D 3 7 6 3 1 5 1 5 0 – DISPLAY Section – M+9V Q606 Q601 Q707 P1 – 36 SELECTOR Q605 FL601 FLUORESCENT BUFFER INDICATOR TUBE Q807, 808 D603, 605, 601 LED DRIVE D1002, 1004, 1006 Q602 – 604, D1008, 1010, 1012 Q1001 –...

  • Page 32: Printed Wiring Board - Rf Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7 - 3 . PRINTED WIRING BOARD – RF Board – • See page 24 for Circuit Boards Location. IC001 DMB03 BOARD (Page 36) (TDP022W) 1 3 9 4 2 2 9 6 5 1 3 (TDP022W) •...

  • Page 33: Schematic Diagram - Rf Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-4. SCHEMATIC DIAGRAM – RF Board – CN002 C027 C031 R026 R023 1000p JL005 C030 C025 R025 C029 JL004 CN001 C013 R024 JL007 C006 C008 C019 5600p R027 C009...

  • Page 34: Printed Wiring Board - Dvd Mechanism Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-5. PRINTED WIRING BOARDS — DVD MECHANISM Board — • Refer to page 24 for Circuit Boards Location. 1 3 9 4 2 2 9 6 5 1 3...

  • Page 35: Schematic Diagram - Dvd Mechanism Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-6. SCHEMATIC DIAGRAM – DVD MECHANISM Board – 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 36: Printed Wiring Board - Dmb03 Board (Side A)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7 - 7 . PRINTED WIRING BOARDS – DMB03 Board (SIDE A) – • See page 24 for Circuit Boards Location. : Uses unleaded solder. MAIN BOARD VIDEO BOARD...

  • Page 37: Printed Wiring Board - Dmb03 Board (Side B)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 PRINTED WIRING BOARDS – DMB03 Board (SIDE B) – • See page 24 for Circuit Boards Location. : Uses unleaded solder. C326 R313 IC252 C307 R307 R306 R303 R305...

  • Page 38: Schematic Diagram - Dmb03 Board (1/8)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-8. SCHEMATIC DIAGRAM – DMB03 Board (1/8) – µPC2933T-E2 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 39: Schematic Diagram - Dmb03 Board (2/8)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-9. SCHEMATIC DIAGRAM – DMB03 Board (2/8) – 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 40: Schematic Diagram - Dmb03 Board (3/8)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7 - 1 0 . SCHEMATIC DIAGRAM – DMB03 (3/8) Boards – • See page 71 for Pin Function Description. 1 3 9 4 2 2 9 6 5 1 3...

  • Page 41: Schematic Diagram - Dmb03 Board (4/8)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-11. SCHEMATIC DIAGRAM – DMB03 (4/8) Boards – 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 42: Schematic Diagram - Dmb03 Board (5/8)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7 - 1 2 . SCHEMATIC DIAGRAM – DMB03 (5/8) Boards – • See page 74 for Pin Function Description. 1 3 9 4 2 2 9 6 5 1 3...

  • Page 43: Schematic Diagram - Dmb03 Board (6/8)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-13. SCHEMATIC DIAGRAM – DMB03 (6/8) Boards – 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 44: Schematic Diagram - Dmb03 Board (7/8)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7 - 1 4 . SCHEMATIC DIAGRAM – DMB03 (7/8) Boards – • See page 68 for Pin Function Description. 1 3 9 4 2 2 9 6 5 1 3...

  • Page 45: Schematic Diagram - Dmb03 Board (8/8)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-15. SCHEMATIC DIAGRAM – DMB03 (8/8) Boards – 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 46: Printed Wiring Board - Video, Regulator Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7 - 1 6 . PRINTED WIRING BOARD – VIDEO, REGULATOR Boards – • See page 24 for Circuit Boards Location. REGULATOR BOARD VIDEO BOARD MAIN DMB03 BOARD BOARD...

  • Page 47: Schematic Diagram - Video, Regulator Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-17. SCHEMATIC DIAGRAM – VIDEO, REGULATOR Board – 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 48: Printed Wiring Boards - Main Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7 - 1 8 . PRINTED WIRING BOARD – MAIN Board – • See page 24 for Circuit Boards Location. VIDEO DMB03 BOARD (FOR CHECK) (FOR CHECK) TUNER (Page 46)

  • Page 49: Schematic Diagram - Main Board (1/4)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-19. SCHEMATIC DIAGRAM – MAIN (1/4) Board – 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 50: Schematic Diagram - Main Board (2/4)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-20. SCHEMATIC DIAGRAM – MAIN (2/4) Board – 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 51: Schematic Diagram - Main Board (3/4)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-21. SCHEMATIC DIAGRAM – MAIN (3/4) Board – 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 52: Schematic Diagram - Main Board (4/4)

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-22. SCHEMATIC DIAGRAM – MAIN (4/4) Board – • See page 76 for Pin Function Description. 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 53: Printed Wiring Boards - Game In, Cd Switch Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7 - 2 3 . PRINTED WIRING BOARD – GAME IN, CD SWITCH Board – • See page 24 for Circuit Boards Location. GAME IN BOARD DISPLAY BOARD VOLUME BOARD...

  • Page 54: Schematic Diagram - Game In, Cd Switch Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-24. SCHEMATIC DIAGRAM – GAME IN, CD SWITCH Board – 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 55: Printed Wiring Board - Display Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7 - 2 5 . PRINTED WIRING BOARD – DISPLAY Board – • See page 24 for Circuit Boards Location. DISPLAY BOARD CD SWITCH BOARD (Page 53) TUNER/BAND TAPE A/B >...

  • Page 56: Schematic Diagram - Display Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7 - 2 6 . SCHEMATIC DIAGRAM – DISPLAY Board – • See page 78 for Pin Function Description. MAIN BOARD 1 3 9 4 2 2 9 6 5 1 3...

  • Page 57: Printed Wiring Board - Power Amp Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7 - 2 7 . PRINTED WIRING BOARDS – POWER AMP Board – • See page 24 for Circuit Boards Location. FRONT SPEAKER SURROUND CENTER (IMPEDANCE SPEAKER SPEAKER USE 6–16Ω) (IMPEDANCE USE 8Ω)

  • Page 58: Schematic Diagram - Power Amp Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-28. SCHEMATIC DIAGRAM – POWER AMP Board – 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 59: Printed Wiring Board - Surround Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7 - 2 9 . PRINTED WIRING BOARDS – SURROUND Board – • See page 24 for Circuit Boards Location. POWER BOARD SURROUND BOARD (Page 57) 1 3 9 4 2 2 9 6 5 1 3...

  • Page 60: Schematic Diagram - Surround Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-30. SCHEMATIC DIAGRAM – SURROUND Board – 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 61: Printed Wiring Boards - Trans Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7 - 3 1 . PRINTED WIRING BOARDS – TRANS Board – • See page 24 for Circuit Boards Location. MAIN BOARD AC IN (Page 48) SUB TRANS BOARD •...

  • Page 62: Schematic Diagram - Trans Board

    HCD-GN77D 3 7 6 3 1 5 1 5 0 7-32. SCHEMATIC DIAGRAM – TRANS Board – 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 http://www.xiaoyu163.com...

  • Page 63: Ic Block Diagram

    HCD-GN77D 3 7 63 1515 0 7-33. IC Block Diagrams IC216 SN74ALVCH16841DGGR (DMB03 BOARD) IC252 TC7WH157FK (TE85R) (DMB03 BOARD) 56 1LE 11 7 11 6 SELECT EN G GND 4 LATCH 1D10 1Q10 LATCH L 13942296513 2D10 2Q10 29 2LE...
  • Page 64 HCD-GN77D 3 7 63 1515 0 IC509 CXD3068Q (DMB03 BOARD) 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 DVDD2 ASYE DIGITAL ASYMMETRY CORRECTOR DIGITAL DOUT LRCK D/A DIGITAL...
  • Page 65 HCD-GN77D 3 7 63 1515 0 IC903 BR24C16F-E2 (DMB03 BOARD) 1 A0 16 K bit EEPROM ARRAY 11 bit 8 bit TEST 2 A1 ADDRESS SLAVE WORD DATA 11 bit DECODER ADDRESS REGISTER REGISTER START STOP 3 A2 CONTROL CIRCUIT...
  • Page 66 HCD-GN77D 3 7 63 1515 0 IC001 SP3723BDA0PM (RF BOARD) 64 63 62 61 60 59 55 54 53 52 FAST ATTACK INPUT OUTPUT HOLD FULL WAVE AGC CHARGE INHIBIT RECTIFER PUMP PROGRAMMABLE FROM S-PORT EQUALIZER INPUT DVDRFP FILTER...
  • Page 67 HCD-GN77D 3 7 63 1515 0 IC710 NJM2244M-TE2 (VIDEO BOARD) IC721 M65850P (GAME IN BOARD) VIN1 OSCILLATOR LPF2 VOUT 75 Ω DRIVER 1/2 VCC CLOCK AUTO MAIN VIN2 BIAS 20KBIT RESET RESET CONTROL SRAM VIN3 (MUTE) LPF1 IC711 MM1568AJBE (VIDEO BOARD)

  • Page 68: Ic Pin Function Description

    HCD-GN77D 3 7 63 1515 0 7-34. IC Pin Function Description • IC207 ZIVA5X-C1F (DVD SYSTEM PROCESSOR)(DMB03 BOARD) Pin No. Pin Name Description VDDP — Power supply terminal (+3.3V) (I/O signal) Address bus 3 to 11 HD15 to HD7...
  • Page 69 HCD-GN77D 3 7 63 1515 0 Discription Pin No. Pin Name GND25 — Ground terminal (SDRAM I/O signal) VDD25 — Power supply terminal (+3.3V) (SDRAM I/O signal) VCLK System clock (not used) XCK_I/O_SEL 5.1ch/downmix switch signal output S1 signal output...
  • Page 70 HCD-GN77D 3 7 63 1515 0 Pin Name Description Pin No. DAI_BCK BCK signal input from ADC (not used) DAI_LRCK LRCK signal input from ADC (not used) I2C_CL I2C clock bus I2C_DA I2C data bus CS(ZIVA_E2P) Chip select signal output to the EEPROM (IC204)
  • Page 71 HCD-GN77D 3 7 63 1515 0 • IC701 TMC57929PGF-RDP (DVD DECODER) (DBM03 Board) Pin No. Pin Name Description 1, 2 D5, D6 Two-way data bus with CXP973064-226R — Ground Two-way data bus with CXP973064-226R Address signal input from CXP973064-226R —...
  • Page 72 HCD-GN77D 3 7 63 1515 0 Pin No. Pin Name Description XPDI Not used (Pull up) VDDS — Power supply (+5V) 59, 60 HA0, HA2 Not used (Pull up) — Ground (open) 62, 63 HCS0, HCS1 Not used —...
  • Page 73 HCD-GN77D 3 7 63 1515 0 Pin No. Pin Name Description 128, 129 VCCA3, VCCA2 — Power supply (+3.3V) Signal output from the charge pump for phase comparator PDHVCC Middle point voltage input terminal for RF PLL Signal output from the charge pump for frequency comparator...
  • Page 74 HCD-GN77D 3 7 63 1515 0 • IC901 CXP973064-226R (MECHANISM CONTROLLER) (DBM03 Board) Pin No. Pin Name Description NO_USE Not used (open) SDEN Serial data enable signal output to CXD1881AR DOCTRL/ Digital out on/off control signal output to CXD3068Q...
  • Page 75 HCD-GN77D 3 7 63 1515 0 Pin No. Pin Name Description CONTROL_1 Not used (open) GFS_DVD Guard frame sync signal input from CXD1882R MUTE_CD Muting on/off control signal output to CXD3068Q MUTE_2D Muting on/off control signal output to FAN8035L...
  • Page 76 HCD-GN77D 3 7 63 1515 0 • IC501 M30620MCN-A05FP (SYSTEM CONTOL) (MAIN Board) (E3, E15, EA) • IC501 M30620MCN-A27FP (SYSTEM CONTOL) (MAIN Board) (SP, MY, TH) Description Pin No. Pin Name STEREO Stereo signal input from tuner ––––––––––––––––– TUNED...
  • Page 77 HCD-GN77D 3 7 63 1515 0 Discription Pin No. Pin Name REC-MUTE REC mute signal output TC-MUTE TC line mute signal output PB-A/B TC A/B select signal output ––––––––––– ALC signal output TC-RELAY TC relay control signal output REC BIAS...
  • Page 78 HCD-GN77D 3 7 63 1515 0 • IC601 MB90M407PF-G-130-BND (DISPLAY CONTROL) (DISPLAY Board) Pin No. Pin Name Description 1 to 7 G7 to G1 FLD grid output 8 to 10 P1 to P3 FLD segment output VSS-IO — Ground...

  • Page 79: Exploded Views

    HCD-GN77D SECTION 8 EXPLODED VIEWS 3 7 63 1515 0 NOTE: • -XX and -X mean standardized parts, so they • Abbreviation may have some difference from the original : 240 V AC Area in E model The components identified by one.

  • Page 80: Front Panel Section

    A-4734-533-A GAME IN BOARD, COMPLETE(TH) u163 4-244-089-21 COVER (AL-STR) 1-796-487-31 DECK, MECHANICAL (CDM43RR23) 4-951-620-01 SCREW (2.6X8), +BVTP 4-243-609-01 BELT (AF) 4-963-404-21 EMBLEM (5-A), SONY 4-243-610-01 BELT (AL) 4-224-104-11 DAMPER 4-244-094-01 SPRING (L) 4-243-608-01 BELT (BR) 1-751-688-11 WIRE (FLAT TYPE) (13 CORE)

  • Page 81: Chassis Section

    HCD-GN77D 3 7 63 1515 0 8-3. CHASSIS SECTION supplied supplied supplied F979 T910 F974 F978 F975 F976 F977 L 13942296513 supplied supplied The components identified by mark 0 or dotted line with mark 0 are critical for safety.

  • Page 82: Dvd Mechanism Deck Section-1 (Cdm74D-Dvbu43)

    HCD-GN77D 3 7 63 1515 0 8-4. DVD MECHANISM DECK SECTION-1 (CDM74D-DVBU23) M741 L 13942296513 chassis assy Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-218-253-21 SCREW (M2.6), +BTTP 1-687-132-11 SENSOR BOARD 1-776-182-11 WIRE (FLAT TYPE) (5 CORE)

  • Page 83: Dvd Mechanism Deck Section-2 (Cdm74D-Dvbu43)

    HCD-GN77D 3 7 63 1515 0 8-5. DVD MECHANISM DECK SECTION-2 (CDM74D-DVBU23) RE701 M751 L 13942296513 The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified. Ref. No.

  • Page 84: Electrical Parts List

    HCD-GN77D SECTION 9 CD SWITCH DISPLAY ELECTRICAL PARTS LIST 3 7 63 1515 0 NOTE: Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks • SEMICONDUCTORS • Due to standardization, replacements in the The components identified by In each case, u: µ, for example:...
  • Page 85 HCD-GN77D DISPLAY 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C711 1-162-306-11 CERAMIC 0.01uF R114 1-249-419-11 CARBON 1.5K 1/4W F C712 1-162-306-11 CERAMIC 0.01uF R115 1-249-419-11 CARBON 1.5K 1/4W F...
  • Page 86 HCD-GN77D DISPLAY DMB03 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R756 1-249-421-11 CARBON 2.2K 1/4W F C230 1-164-947-11 CERAMIC CHIP 0.01uF R757 1-247-843-11 CARBON 3.3K 1/4W C231 1-164-947-11 CERAMIC CHIP 0.01uF...
  • Page 87 HCD-GN77D DMB03 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C323 1-107-820-11 CERAMIC CHIP 0.1uF C701 1-126-209-11 ELECT CHIP 100uF C324 1-107-820-11 CERAMIC CHIP 0.1uF C702 1-117-370-11 CERAMIC CHIP 10uF...
  • Page 88 HCD-GN77D DMB03 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C902 1-164-947-11 CERAMIC CHIP 0.01uF FL204 1-234-177-21 FERRITE C903 1-126-209-11 ELECT CHIP 100uF FL205 1-234-177-21 FERRITE C904 1-164-947-11 CERAMIC CHIP 0.01uF...
  • Page 89 HCD-GN77D DMB03 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks L405 1-216-296-11 SHORT CHIP R264 1-218-285-11 METAL CHIP 1/10W L406 1-216-296-11 SHORT CHIP R265 1-218-285-11 METAL CHIP 1/10W L412 1-216-296-11 SHORT CHIP...
  • Page 90 HCD-GN77D DMB03 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R531 1-216-864-11 METAL CHIP 1/10W R695 1-216-864-11 METAL CHIP 1/10W R696 1-216-864-11 METAL CHIP 1/10W R532 1-216-864-11 METAL CHIP 1/10W...
  • Page 91 HCD-GN77D DMB03 DRIVER 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R776 1-216-864-11 METAL CHIP 1/10W R992 1-216-864-11 METAL CHIP 1/10W R777 1-216-864-11 METAL CHIP 1/10W R994 1-216-864-11 METAL CHIP...
  • Page 92 HCD-GN77D DRIVER GAME IN 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < CONNECTOR > C729 1-126-160-11 ELECT C730 1-161-494-00 CERAMIC 0.022uF CN701 1-785-338-11 PIN, CONNECTOR(LIGHT ANGLE)12P C731 1-162-305-11 CERAMIC 0.0068uF 30%...
  • Page 93 HCD-GN77D GAME IN MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R733 1-249-431-11 CARBON 1/4W C163 1-136-171-00 FILM 0.33uF R734 1-247-807-31 CARBON 1/4W C167 1-126-961-11 ELECT 2.2uF R735 1-247-885-00 CARBON...
  • Page 94 HCD-GN77D MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C395 1-162-919-11 CERAMIC CHIP 22PF C828 1-136-171-00 FILM 0.33uF C396 1-126-965-91 ELECT 22uF C829 1-136-169-00 FILM 0.22uF C397 1-126-964-11 ELECT...
  • Page 95 HCD-GN77D MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks D394 8-719-988-61 DIODE 1SS355TE-17 < COIL > D501 8-719-988-61 DIODE 1SS355TE-17 D502 8-719-988-61 DIODE 1SS355TE-17 L201 1-414-189-31 INDUCTOR 100uH D503...
  • Page 96 HCD-GN77D MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 0 R344 R103 1-220-373-11 METAL CHIP 1/10W 1-219-787-17 FUSIBLE 1/4W R104 1-216-821-11 METAL CHIP 1/10W R345 1-216-836-11 METAL CHIP 1/10W...
  • Page 97 HCD-GN77D MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R448 1-216-809-11 METAL CHIP 1/10W R588 1-216-809-11 METAL CHIP 1/10W R589 1-216-809-11 METAL CHIP 1/10W R450 1-216-809-11 METAL CHIP 1/10W...
  • Page 98 HCD-GN77D MAIN MOTOR (LD) MOTOR (TB) POWER AMP 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R805 1-216-833-11 METAL CHIP 1/10W R916 1-216-845-11 METAL CHIP 100K 1/10W R806 1-216-825-11 METAL CHIP 2.2K...
  • Page 99 HCD-GN77D POWER AMP 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C545 1-130-777-00 MYLAR 0.1uF 100V R502 1-249-437-11 CARBON 1/4W C546 1-137-843-11 ELECT 2200uF 100V R503 1-249-410-11 CARBON 1/4W F...
  • Page 100 HCD-GN77D POWER AMP REGULATOR 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R570 1-249-429-11 CARBON 1/4W Q906 8-729-113-13 TRANSISTOR FA1A4M-T1L33 R572 1-249-441-11 CARBON 100K 1/4W R577 1-247-807-31 CARBON 1/4W < RESISTOR >...
  • Page 101 HCD-GN77D SENSOR SUB TRANS 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks CN003 1-784-861-21 CONNECTOR, FFC(LIF(NON-ZIF))9P A-4749-088-A SUB TRANS BOARD, COMPLETE(E3,E15,SP,MY) A-4747-641-A SUB TRANS BOARD, COMPLETE (EA) < DIODE >...
  • Page 102 HCD-GN77D SURROUND 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks A-4732-880-A SURROUND BOARD, COMPLETE (EXCEPT TH) < RESISTOR > A-4734-255-A SURROUND BOARD, COMPLETE (TH) *********************** R301 1-249-417-11 CARBON 1/4W F...
  • Page 103 HCD-GN77D TRANS VIDEO 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 1-686-930-11 TRANS BOARD C725 1-128-551-11 ELECT 22uF *********** C726 1-126-935-11 ELECT 470uF 6.3V < CAPACITOR > C727 1-128-551-11 ELECT...
  • Page 104 HCD-GN77D VIDEO VOLUME 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < TRANSISTOR > C751 1-164-159-21 CERAMIC 0.1uF 50V(TH) Q215 8-729-802-80 TRANSISTOR 2SC3661-TB C751 1-164-159-11 CERAMIC 0.1uF Q216 8-729-802-80 TRANSISTOR 2SC3661-TB...
  • Page 105 HCD-GN77D VOLUME 3 7 63 1515 0 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R777 1-249-435-11 CARBON 1/4W MISCELLANEOUS ************* R1001 1-249-413-11 CARBON 1/4W F R1002 1-249-413-11 CARBON 1/4W F 1-569-007-11 ADAPTOR, CONVERSION (E15)
  • Page 106 HCD-GN77D 3 7 63 1515 0 E Model SERVICE MANUAL Ver 1.1 2003.08 SUPPLEMENT-1 File this supplement with the service manual. Subject: DVD OSD Test Mode L 13942296513 u163 9-877-454-81 http://www.xiaoyu163.com...

  • Page 107: General Description

    HCD-GN77D 3 7 63 1515 0 DVD OSD Test Mode • Example display [GENERAL DESCRIPTION] ### Syscon Diagnosis ### The Test Mode allows you to make diagnosis and adjustment eas- ily using the remote commander and monitor TV. The instructions, Diag All Check diagnostic results, etc.
  • Page 108 HCD-GN77D 3 7 63 1515 0 Note: During adjustment of each disc, the measurement for disc type judg- 0-2-5. Region ment is made. As automatic adjustment does not judge the disc Model destination code is displayed. (2 digits number) type unlike conventional models, take care not to insert wrong type discs.
  • Page 109 HCD-GN77D 3 7 63 1515 0 1-3. DVD-DL (dual layer) In using the manual operation menu, take care of the following points. These commands do not provide protection, thus requiring Press the key on the remote commander and insert a DVD correct operation.
  • Page 110 HCD-GN77D 3 7 63 1515 0 Mirr Count : The number of times which mirror counts between : Turn on/off the laser. disc surface and record surface when disc type judg- Focus : Search the focus and turn on the focus.
  • Page 111 HCD-GN77D 3 7 63 1515 0 Focus Offset : Adjusts focus offset. Focus Gain : Adjusts focus gain. EEPROM Data 2/2 CDRW DVDRW Focus Gain TRK. Offset coares : Trk. Gain Adjusts tracking offset of the RF amp Focus Offset (IC001) side.
  • Page 112 HCD-GN77D 3 7 63 1515 0 2-9. SACD Water Mark Check (Not used) xxxxhxxm : The laser on total hours. Data below minutes are omitted. : Error number. SACD Water Mark Check : Error code. : Not used. • Clearing History Information...
  • Page 113 HCD-GN77D 3 7 63 1515 0 VERSION INFORMATION aa: Initialization is completed or not. : Complete. On the Test Mode Menu screen, selecting displays the ROM other number: Not complete. version and region code. bb: Operating status of mechanism deck at an error occurred.
  • Page 114 HCD-GN77D 3 7 63 1515 0 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.

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