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Sony HCD-GTX888 Service Manual
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Sony HCD-GTX888 Service Manual

Cd deck receiver
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HCD-GTX777/GTX787/GTX888
SERVICE MANUAL
Ver. 1.1 2008. 05
• HCD-GTX777/GTX787/GTX888
are the tuner, deck, CD and
amplifi er section in
MHC-GTX777/GTX787/GTX888.
AUDIO POWER SPECIFICATION
Amplifi er section
MHC-GTX888 (HCD-GTX888)
The following are measured at
Mexican model:
AC 127 V, 60 Hz
Other models:
AC 120, 220, 230 – 240 V, 50/60 Hz
Front/Surround speaker
Power Output (rated):
190 W + 190 W (at 8
1 kHz, 1% THD, at LINK MODE)
RMS output power (reference):
295 W + 295 W (per channel at 8
24 , 1 kHz, 10% THD, at LINK MODE)
Subwoofer
RMS output power (reference):
160 W + 160 W (per channel at 6 ,
100 Hz, 10% THD)
9-890-504-02
Sony Corporation
2008E08-1
Audio Business Group
© 2008. 05
Published by Sony EMCS (Malaysia) PG Tec
Photo : HCD-GTX888 (E Model)
Model Name Using Similar Mechanism
CD
CD Mechanism Type
Section
Optical Pick-up Name
Tape Deck Model Name Using Similar Mechanism
Section
Tape Mechanism Type
SPECIFICATIONS
and 24 ,
and
HCD-GTX777/GTX787/GTX888
HCD-GTX777/GTX787/GTX888
Australian Model
MHC-GTX787 (HCD-GTX787)
The following are measured at
Mexican model:
AC 127 V, 60 Hz
Other models:
AC 120, 220, 230 – 240 V, 50/60 Hz
Front speaker
Power Output (rated):
230 W + 230 W (at 4 , 1 kHz, 1% THD)
RMS output power (reference):
380 W + 380 W (per channel at 4 , 1 kHz, 10% THD)
MHC-GTX777 (HCD-GTX777)
European model only
The following are measured at
AC 230 V, 50/60 Hz
Front/Surround speaker
Power Output (rated):
235 W + 235 W (at 8
1% THD, at LINK MODE)
RMS output power (reference):
380 W + 380 W (per channel at 8
8 , 1 kHz, 10% THD, at LINK MODE)
CD DECK RECEIVER
AEP Model
HCD-GTX777
E Model
HCD-GTX888
HCD-GTX66/GTX77/GTX88
CDM74KF-K6BD93-WOD//M
KSM-213DCP/C2NP
NEW
CFP42608
and 8 , 1 kHz,
and
– Continued on next page –
1

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  • Page 1 380 W + 380 W (per channel at 8 8 , 1 kHz, 10% THD, at LINK MODE) – Continued on next page – CD DECK RECEIVER 9-890-504-02 Sony Corporation 2008E08-1 Audio Business Group © 2008. 05 Published by Sony EMCS (Malaysia) PG Tec...
  • Page 2 Compact disc and digital audio system (11 1/8 × 14 3/8 × 17 7/8 inches) Laser Semiconductor laser Mass (Approx.) HCD-GTX888: 14.0 kg (30 lb 14 oz) ( = 770 – 810 nm) HCD-GTX787/HCD-GTX777: Emission duration: continuous 12.0 kg (26 lb 8 oz) Laser Output Max.
  • Page 3 HCD-GTX777/GTX787/GTX888 Notes on Chip Component Replacement NOTES ON LASER DIODE EMISSION CHECK • Never reuse a disconnected chip component. The laser beam on this model is concentrated so as to be focused on • Notice that the minus side of a tantalum capacitor may be the disc refl...
  • Page 4 HCD-GTX777/GTX787/GTX888 MODEL IDENTIFICATION • Abbreviation : 120V AC area in E model – MODEL NUMBER LABEL – : Middle Easten, African and Indian model E51 : Chilean and Peruvian model : Argentina model AUS : Australian model PART NO MX : Mexican model (GTX888 ONLY) (GTX888 ONLY) MODEL...

  • Page 5: Table Of Contents

    HCD-GTX777/GTX787/GTX888 TABLE OF CONTENTS 1. GENERAL 6-7. Circuit Boards Location ............. 37 6-8. Printed Wiring Board — BD93 Board — ......40 Guide to parts and controls ............6 6-9. Schematic Diagram — BD93 Board — ......41 6-10. Printed Wiring Boards — Driver Board — ....... 42 2.

  • Page 6: General

    HCD-GTX777/GTX787/GTX888 SECTION 1 Note: This section is extracted GENERAL from instruction manual. Guide to parts and controls This manual mainly explains operations using the buttons on the unit, but the same operations can also be performed using the buttons on the remote having the same or similar names.
  • Page 7 HCD-GTX777/GTX787/GTX888 Remote METER MODE (page 32) Press to select a preset display pattern. Function buttons: CD (pages 15, 20, 24, 32, 33, 36) TUNER/BAND (pages 22, 32) Unit: TAPE (pages 29, 32) Unit: AUDIO (pages 29, 32) Unit: VIDEO (pages 29, 32) Unit: (pages 25, 27, 32, 33) Remote: USB (pages 25, 27, 33)
  • Page 8 HCD-GTX777/GTX787/GTX888 PUSH OPEN/CLOSE MIC (jack) (pages 39, 42, 53) (page 29) Connect an optional microphone. Press to insert or eject a tape. MIC LEVEL (pages 37, 39, 42) Tape deck (pages 29, 36, 40, 47) Turn to adjust the microphone volume.
  • Page 9 HCD-GTX777/GTX787/GTX888 F CLOCK/TIMER SELECT OPTIONS (pages 30, 31) (page 40) Press to select the display pattern, MP3 BOOSTER+ function and USB CLOCK/TIMER SET (pages 19, SELECT. Press to set the clock and the timers. DISPLAY (pages 19, 32, 32, 36) Press to change the information in F[ REPEAT/FM MODE (pages 20, the display.
  • Page 10 HCD-GTX777/GTX787/GTX888 – Display “ ” lights up during playback. Lights up when the timer is set “ ” lights up when playback is (page 39). paused. Lights up when the Sleep Timer is Indicates the activated sound effect activated (page 39). (pages 30, 31, 38).
  • Page 11 HCD-GTX777/GTX787/GTX888 Using the subwoofers (MHC-GTX888 only) You can use the subwoofers to enhance the bass. Subwoofer A (SS-WG888A) Press SUBWOOFER ON/OFF on the subwoofer A to light up the indicator. The subwoofers are turned on. Turn SUBWOOFER LEVEL on the subwoofer A to adjust the level.

  • Page 12: Disassembly

    HCD-GTX777/GTX787/GTX888 SECTION 2 DISASSEMBLY Note : This set can be disassembled in the order shown below. 2-1. CASE (TOP) (Page 13) 2-8. COVER (CDM) (Page 16) 2-2. LOADING PANEL (Page 13) 2-16. DRIVER BOARD, 2-15. BD93 BOARD 2-3. CD BLOCK SECTION SW BOARD, (Page 20) (Page 14)

  • Page 13: Case (Top)

    HCD-GTX777/GTX787/GTX888 Note : Follow the disassembly procedure in the numerical order given. 2-1. CASE (TOP)  two screws RB two screws (+BVTP 3 x 10) (+BVTP 3 x 10)  panel (side-L)  two RE case (top) screws (case 3 TP2)  panel (side-R)  two screws  screw...

  • Page 14: Cd Block Section

    HCD-GTX777/GTX787/GTX888 Ver. 1.1 2-3. CD BLOCK SECTION  w i r e ( f l a t t y p e ) ( 1 1 c o r e )  w i r e ( f l a t t y p e ) ( 1 3 c o r e ) ( C N 4 1 0 ) ( C N 7 0 1 )  w i r e ( f l a t t y p e ) ( 1 3 c o r e )

  • Page 15: Tape Mechanism Deck, Mic Board, Usb Connector Board

    HCD-GTX777/GTX787/GTX888 2-5. TAPE MECHANISM DECK, MIC BOARD, USB CONNECTOR BOARD  tape mechanism deck  four screws (+BVTP 2.6 (3CR))  three screws (+BVTP 2.6 (3CR)) bracket (MIC shield)  three screws (+BVTP 2.6 (3CR))  USB CONNECTOR board  MIC board  knob (MIC)  two screws (+BVTP 2.6 (3CR))

  • Page 16: Cd-Sw Board

    HCD-GTX777/GTX787/GTX888 Ver. 1.1 2-7. CD-SW BOARD  two screws (+BVTP 2.6 (3CR)) escucheon (CD) CD-SW board  three screws (+BVTP 2.6 (3CR)) 2-8. COVER (CDM), TC BOARD CD mechanism deck  cover (CDM)  one screw (+BVTP 3 s 10)  two screws (+BVTP 3 s 10)  TC board...

  • Page 17: Tuner Pack

    HCD-GTX777/GTX787/GTX888 Ver. 1.1 2-9. TUNER PACK  t u n e r p a c k  w i r e ( f l a t t y p e ) ( 9 c o r e ) ( C N 1 )  t w o s c r e w s ( + B V T P 3 x 8 ) 2-10.

  • Page 18: Main Board

    HCD-GTX777/GTX787/GTX888 2-11. MAIN BOARD P O W E R b o a r d a s s y  M A I N b o a r d C N 8 0 9 ( 9 p i n ) C N 6 1 0 ( 8 p i n ) C N 6 1 1 ( 8 p i n )

  • Page 19: Subwoofer Board, Power Board

    HCD-GTX777/GTX787/GTX888 2-13. SUBWOOFER BOARD, POWER BOARD  two screws (+BV3 (3-CR))  SUBWOOFER board  two screws (transistor)  heat sink assy  POWER board  two screws (transistor) 2-14. POWER TRANSFORMER (T1200) TRANS board  power transfomer (T1200)  three screws (+BVTT 4 x 8)  three screws (+BVTT 4 x 8)

  • Page 20: Bd93 Board

    HCD-GTX777/GTX787/GTX888 Ver. 1.1 2-15. BD93 BOARD  BD93 board  wire (flat type) (16 core)  Remove the four solders. (CN301) 2-16. DRIVER BOARD, SW BOARD, USB R BOARD  two screws (+BVTT (M2.6))  CN703 (4P)  DRIVER board  screw (+BVTT (M2.6))  two screws...

  • Page 21: Optical Pick-Up

    HCD-GTX777/GTX787/GTX888 2-17. OPTICAL PICK-UP  optical pick-up (BU-K6BD93UR)  two insulators  two insulators  two coil springs  two coil springs (insulator) (insulator)  two floating screws (+PTPWH M2.6)  two floating screws (+PTPWH M2.6) 2-18. SENSOR BOARD  floating screw (+PTPWH M2.6)  t ray  one screw...

  • Page 22: Motor (Tb) Board

    HCD-GTX777/GTX787/GTX888 2-19. MOTOR (TB) BOARD  stopper table  stopper  t able motor assy (M741)  wire (flat type) (5 core) (CN742)  MOTOR (TB) board  Remove the two solderings of motor.  two screws (+BTTP (M2.6)) 2-20. MOTOR (LD) BOARD  two screws (+BTTP (M2.6))  Remove the two solderings of motor.

  • Page 23: Test Mode

    HCD-GTX777/GTX787/GTX888 SECTION 3 TEST MODE 3. Press [EQ BAND/MEMORY] button repeatedly until a message [GC TEST MODE] “GEQ FLAT” appears on the fl uorescent indicator tube. GEQ • This mode is used to check the fl uorescent indicator tube, LEDs, is set to fl...
  • Page 24 HCD-GTX777/GTX787/GTX888 [CD SERVICE MODE] • Aging mode sequence: • This mode let you move the CD sled motor freely. Use this mode when you want to clean the optical pick-up. START Procedure: 1. Press ?/1 button to turn on the system. 2.
  • Page 25 HCD-GTX777/GTX787/GTX888 [CD ERROR CODE MODE] : The process when trouble occurs : Process ejecting DISC • Display the CD error code when an error occurred. : Process waiting for inserting DISC Procedure: : Process sending request to insert a disc to upper 1.
  • Page 26 HCD-GTX777/GTX787/GTX888 [CD REPEAT 5 LIMIT OFF MODE] [CD TRAY LOCK MODE] • The number of repeat for CD playback is 5 times when the re- • This mode let you lock the disc tray. When this mode is activated, the disc tray will not open when [OPEN/CLOSE] button or [DISC peat mode is “REPEAT ALL”.

  • Page 27: Mechanical Adjustments

    HCD-GTX777/GTX787/GTX888 [METER SWITCH TOUCH COUNT DISPLAY] SECTION 4 • This mode is used to display the total count of meter pointer MECHANICAL ADJUSTMENTS touch initial switch and max switch. Procedure: Precaution 1. Press button to turn on the system. 1. Clean the following parts with a denatured alcohol-moistened 2.

  • Page 28: Electrical Adjustments

    HCD-GTX777/GTX787/GTX888 SECTION 5 ELECTRICAL ADJUSTMENTS 0 dB = 1 µV 0 dB = 0.775 V TUNER SECTION DECK SECTION [FM Tune Level Check] 1. Demagnetize the record/playback head with a head demagnetizer. FM signal generator 2. Do not use a magnetized screwdriver for the adjustments. 3.
  • Page 29 HCD-GTX777/GTX787/GTX888 3. Mode: Playback CD SECTION test tape [TEST DISC LIST] P-4-A100 oscilloscope (10 kHz, –10 dB) Use the following test disc on test mode. L-CH • CD: YEDS-18 (PART No. 3-702-101-01) PATD-012 (PART No. 4-225-203-01) Note: R-CH 1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given.
  • Page 30 HCD-GTX777/GTX787/GTX888 [RF LEVEL CHECK] oscilloscope BD93 board TP123(RFO) TP124(VC) – Procedure : 1. Connect an oscilloscope to TP123 (RFO) and TP124 (VC). 2. Turn the power on. 3. Load a disc (YEDS-18) and playback. 4. Confi rm that oscilloscope waveform is clear and check if RF signal level is correct or not.

  • Page 35: Block Diagram - Amp/Subwoofer Section

    RELAY LINK EEP_SCA EEP_SDA SPEED RELAY FRONT PROTECTOR SW-RELAY VACS THERMAL MUTE...

  • Page 37: Circuit Boards Location

    HCD-GTX777/GTX787/GTX888 6-7. CIRCUIT BOARDS LOCATION SENSOR board BD93 board SW board MOTOR (TB) board MOTOR (LD) board USB R board TC board PANEL FUNCTION board DRIVER (F) board ILLUMINATION board METER DISPLAY board JOG board LED board USB CONNECTOR board MAIN board MIC board SUB TRANS board...
  • Page 38 HCD-GTX777/GTX787/GTX888 • Note For Printed Wiring Boards And Schematic Diagrams 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) • Y : parts extracted from the conductor side. 50 WV or less are not indicated except for electrolytics •...

  • Page 40: Printed Wiring Board - Bd93 Board

    R134 R140 C201...

  • Page 42: Printed Wiring Boards - Driver Board

    CN721...

  • Page 44: Printed Wiring Board - Main Board

    R123 JW192 R104 R105 R101 R151 R103 R153 C152 C102 R212 JW189 JW144 JW481 JW493 JW417 JW504 Q151 JW336 JW495 JW496 JW514 R157 R107 JW302 JW113 JW483 JW172 JW252 JW349 JW601 JW468 JW148 JW112 JW308 JW183 JW397 JW153 JW133 JW194 JW473 JW170 JW361...

  • Page 45: Schematic Diagram - Main Board (1/4)

    A+9V MIC-SIGNAL 10 11 12 13 14 MIC-GND CD-R AUDIO-R AUX-R A-GND ST-R TONEOUTR AUDIO-L CD-R VOLINR AUX-L DETECT VIDEO-R BB1R 10k R16 VIDEO-R DPLR/SURR BB2R 0.047 C23 DPLL/SURL OUTR AGCOUTR DATA 10k R12 REFIN REFOUT SWOUT USB-REC-R 50V 0.47 C12 AGCC AGCOUTL USB-REC-L...

  • Page 46: Schematic Diagram - Main Board (2/4)

    CENTER MAIN AC-CUT MUTE RELAY FRONT 0.068 C2055 RELAY LINK PROTECT 0.068 C2058 VACS THERMAL MUTE 2SC3052EF-T1-LEF FAN- UNREG RELAY SW-RLY NJM4558M-TE2 IC2030 STK-MUTE SW-R-IN AGND SW-L-IN 0.068 C2008 0.068 C2005 0.12 C2003 DBFB RELAY 0.1 C656 UNREG 50V 10 C654 GTX888 A+9V MUTE...

  • Page 47: Schematic Diagram - Main Board (3/4)

    JL109 RESET JL108 JL107 RXD1 JL106 CLK1 JL105 JL104 JL103 RTS1 JL102 TXD1 JL101 C217 D-GND C216 JL100 11C-DATA 11C-CLK D+3.3V D-GND OPEN D+3.3V TBL-SENSE TM-F TM-R R102 R100 MGND MC2836 MGND D209 M+9V R208 C202 R209 AC-CUT EVER+10 STBY STBY DETECT BUS3_Z...

  • Page 48: Schematic Diagram - Main Board (4/4)

    VF+4V FAN-ON IIC-DATA LINE-MUTE CENTER MAIN IIC-CLK FRONT-RELAY R452 100p C428 LATCH LINK-RELAY R428 R453 SW-RELAY R427 R454 100p C426 PROTECT R426 R355 TBL-SENSE SPEED R425 OPEN-SW R2A15216FP-CLK 10k R324 R2A15216FP-DATA R423 TUNED R422 10k R359 RELAY R421 R460 AC-CUT MUTE R420 R461...

  • Page 50: Schematic Diagram - Usb Board

    MAZ8068GMLS0 D904...

  • Page 51: Printed Wiring Board - Panel Function Board

    D905 R923 (RED) (GREEN) D906 Q902 JW935 CN965 JW936 JW929 JW985 JW940 JW924 JW925 JW926 JW928 JW986 JW944 JW933 R985 JW983 JW971 JW984 JW967 JW988 JW987 JW907 JW908 D918 D942 D943 JW968 C951 C953 JW961 JW956 JW937 JW957 JW958 JW973 JW939 JW938 JW960...

  • Page 52: Schematic Diagram - Panel Function Board

    680 R933 680 R931 (SURROUND) 1L034FV22D0DAC09 D914 LATCH 680 R929 LED_USB (USB) D913 JW908 680 R927 PGND LED_VIDEO (VIDEO) MA8027-H-TX LGND D912 D918 680 R925 LED_AUDIO (AUDIO) D911 680 R923 MA8027-H-TX D941 LED_TAPE MA8027-H-TX D942 680 R921 LED_TUNER/BAND 680 R919 LED_CD WHITE A/LED...

  • Page 53: Printed Wiring Board - Power Board

    C612 C613 JW698 C614 C615 JW691 JW656 EXCEPT JW642 R719 JW655 C654 C604 L690 R624 JW638 D612 D611 JW654 JW712 JW653 R631 R653 R650 R652 JW686 L680 C650 C652 C609 JW647 RY665 JW646 RY646 C667 C600 JW636 C695 C602 C616 R600 R602 R603...

  • Page 54: Schematic Diagram - Power Board

    LIM2 R674 TP052 R624 LIM1 TP051 TP050 R650 TP049 L-IN 100k R696 TP048 R652 100k R695 L-NF TP047 100k R617 BIAS TP046 R-NF R602 TP045 R600 R-IN TP044 100V C609 33k R670 +PRE TP043 1k R669 100k R671 -PRE TP042 +OUTPUT2 TP041 -OUTPUT2...

  • Page 55: Printed Wiring Board - Sub Woofer Board

    NO801 CN811 JW832 TP801 R865 JL001 R861 JL007 R860 C833 JL003 D812 TB001 JL008 C883 JL009 RY862 JL004 JL005 JL006 D811 JW807 R892 JW822 JW880 C888 R867 JW823 C889 JW816 JW834 C838 JW803 C839 JW820 R866 C826 JW833 JW815 JL025 LP701 JL012 C825...

  • Page 56: Schematic Diagram - Sub Woofer Board

    0.68 C801 0.68 C851 JL024 68k R851 JL023 JL022 ST-BY JL021 JL020 JL019 1/4W 1 R805 JL018 1/4W 100 R828 1/4W 1 R804 JL017 +PRE JL016 -RE2 63V 100 C825 JL015 +RE2 5W 0.22 R888 JL014 -RE1 JL013 +RE1 5W 0.22 R838 JL012 +VCC JL025...

  • Page 57: Printed Wiring Boards - Trans Board

    R1221 TP047 JW1215 JW1214 NO1201 C1211 R1213 R1215 R1216 R1217 JW1206 JW1213 D1200 JW1205 CN1200 JW1208 JW1201 AUS, JW1203 120V/127V 220V 230-240V JW1246 JW1248 JW1243 JW1245 Q1291 CN1296 JW1242 CN1294...

  • Page 58: Schematic Diagram - Trans Board

    120V/127V 220V 230-240V MC2838-T112-1 D1210 BRACKET EP1203 T2AL/250V F1282 JW1294 TP10...

  • Page 59: Printed Wiring Board - Illumination Board

    NO954 D958 TP989 JL984 R1057 CN952 R954 R962 R963 R950 JW1010 JW1006 R951 JW996 JW1012 R965 D921 R953 R952 R960 R961 R1051 N0905...

  • Page 60: Schematic Diagram - Illumination Board

    1L034FV22D0DAC09 R975 D925 R973 1L034FV22D0DAC09 D924 R971 1L034FV22D0DAC09 D923 R969 1L034FV22D0DAC09 D922 R967 1L034FV22D0DAC09 D921 R965 1L034FV22D0DAC09 D920 R1056 R1054 UDZW-TE17-6.8B D958...

  • Page 61: Printed Wiring Board - Mic Board

    C1177 R1188 C1162 R1137 C1161 C1113 C1112 R1183 R1180 C1163 C1116 JL1008 JW1102 C1164 R1189 C1190 JL1009 C1189 JW1104 JW1108 JW1105 R1100 JW1106 R1170 JL1012 JL1011 C1105 C1106...

  • Page 62: Schematic Diagram - Mic Board

    220k 100k R1142 R1145 8.2k 4.7k R1140 R1141 220p C1160 C1110 R1181 100k R1177 4.7k 4.7k R1182 R1183...

  • Page 63: Printed Wiring Boards - Tc Board

    CN400 C456 JW413 R443 R438 JW411 Q402 Q113 Q456 JW460 Q403 C355 JW412 JW410 R432 C354 R431 Q406 R429 C353 C452 R450 C454 C453 Q453 C328 JW454 JW453 R458 JW452 JW451 C329 C330 C351 R451 R454 JW408 C352 D301 C409 JW407 R423 R427...

  • Page 64: Schematic Diagram - Tc Board

    C356 R444 100k R443 R452 R440 100k R424...

  • Page 65: Printed Wiring Boards - Meter Display Board

    R015 R014 JR102 R016 R017 JR103 JR104 R011 R010 CN011 TP19 TP09 TP20 CN003 CN001 CN004 CN031 TP41 TP40 C001 JW006 JW005 CN002...

  • Page 66: Schematic Diagram - Meter Display Board

    1L434FV22D0TD801 D014 R015 SELT2WA10CLF62 D013 R014 R013 SELT2WA10CLF62 D012 R012 R011 SELT2WA10CLF62 D011 R010 TP15 OUT3 TP14 OUT2 TP13 OUT1 TP12 JW004 OUT4 JW002...
  • Page 67 HCD-GTX777/GTX787/GTX888 • IC Block Diagrams IC501 AK5358AET-E2 (BD93 Board) SCLK Decimation · AINR Filter Modulator Serial I/O Interface · Decimation AINL Modulator Filter Clock CKS1 MCLK Divider Voltage LRCK VCOM Reference SDTO IC401 BA5826SFP-E2 (BD93 Board) SP– D.BUFF SL– D.BUFF LEVEL D.BUFF SHIFT...
  • Page 68 HCD-GTX777/GTX787/GTX888 IC502 TC74VHC157FT(EKJ) (BD93 Board) IC200 TC74VHC157FT(EKJ) (MAIN Board) SELECT 11 1 1A 2 STROBE INPUT INPUT OUTPUT 11 12 OUTPUT INPUT INPUT OUTPUT GND 8 OUTPUT IC201 TK63115SCL-G@GT (BD93 Board) VIN 1 VOUT GND 2 V REF ON/OFF THERMAL & CONTROL OVER CURRENT PROTECTION...
  • Page 69 HCD-GTX777/GTX787/GTX888 IC001 LB1846M (METER DISPLAY Board) 10µF 30k7 30k7 OUT 4 OUT 3 30k7 30k7 Stepping Motor 30k7 30k7 OUT 1 OUT 2 30k7 30k7 IC915 R5523N001B-TR-F (USB Board) GATE CURRENT CONTROL LIMIT UVLO FLAG DELAY THERMAL SHUTDOWN...
  • Page 70 HCD-GTX777/GTX787/GTX888 IC921 IS61LV6416-10TLT (USB Board) Decoder I/O0 I/O15 I/O Data I/O Data Circuit Circuit I/O1 I/O14 (Lower Byte) (Upper Byte) I/O2 I/O13 I/O3 I/O12 Column I/O I/O4 I/O11 Control I/O5 I/O10 64k x 16 Circuit Memory Array I/O9 I/O6 I/O8 I/O7 Decoder IC501 M65850FP-E1 (MAIN Board)
  • Page 71 HCD-GTX777/GTX787/GTX888 IC601 STK412-150C (POWER Board) IC602 STK412-150C (POWER Board) COM1 DRIVER DRIVER CURRENT CURRENT LIMITER LIMITER COM2 IC1100 NJM4558V-TE2 (MIC Board) IC51 NJM4558M-TE2 (MAIN Board) IC100 NJM4558M-TE2 (MAIN Board) IC502 NJM4558M-TE2 (MAIN Board) IC2030 NJM4558M-TE2 (MAIN Board) IC2031 NJM4558M-TE2 (MAIN Board) IC301 NJM4558M-TE2 (TC Board) IC401 NJM4558M-TE2 (TC Board) (Top View)
  • Page 72 HCD-GTX777/GTX787/GTX888 IC201 TC74HC4066AFT(EL) (MAIN Board) IC202 TC74HC4066AFT(EL) (MAIN Board) 1I/O 1O/I 2 2O/I 3 4I/O 2I/O 4 4O/I 2C 5 3O/I 3C 6 GND 7 3I/O IC500 TC74LVX4051FT (MAIN Board) 12 13 14 15 16 IC800 STK433-130E (SUB WOOFER Board) Pre Driver Pre Driver Bias Circuit...
  • Page 73 HCD-GTX777/GTX787/GTX888 IC900 BU2099FV (PANEL FUNCTION Board) IC902 BU2099FV (PANEL FUNCTION Board) Latch Controller Shift Write Register Buffer IC675 S-24CS16A01-J8T1G (MAIN Board) DATA OUTPUT ACK OUTPUT CONTROLLER Y DECODER SELECTOR ADDRESS PROM X DECODER COUNTER LOAD DEVICE ADDRESS DATA REGISTER COMPARATOR LOAD COMP HIGH-VOLTAGE GENERATOR...
  • Page 74 HCD-GTX777/GTX787/GTX888 • IC Pin Function Descriptions IC401 R5F3640MDFAR (System Controller) Main board Pin No. Pin Name Pin Description Zipang decoder request pin to master control. Reset signal output to the Zipang IC (digital signal processor) “L”:reset M-MUTE Control port for Zipang motor driver mute. SIRCS Remote control signal input Chip enable contor port to Zipang IC.
  • Page 75 HCD-GTX777/GTX787/GTX888 Pin No. Pin Name Pin Description SW-SPK-RELAY Relay drive signal output for the passive sub woofer “H”:relay on Speaker protect detection signal input from speaker protect circuit “L”:protector on PROTECTOR FAN HI SPEED Fan high speed control signal for Themal VACS, “L”: Fan high speed on. R2A15216FP - CLK Serial data transfer clock signal output to audio signal IC, R2A15216FP R2A15216FP - DATA...
  • Page 76 HCD-GTX777/GTX787/GTX888 • IC Pin Function Descriptions IC101 TC94A70FG-101 (RF AMP, FOCUS/TRACKING ERROR AMP, DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR, DIGITAL FILTER, D/A CONVERTER) (BD93 BOARD) Pin No. Pin Name Pin Description AVSS3 — Ground pin RFZi RF ripple zero crossing signal input RFRP RF ripple signal output Sub beam addition signal or RF peak detection signal output...
  • Page 77 HCD-GTX777/GTX787/GTX888 Pin No. Pin Name Pin Description SBSY Subcode block sync signal output to the system controller SBOK/FOK Not used in this set. (Open) Not used in this set. (Open) SFSY/LOCK Not used in this set. (Open) ZDET Zero detection signal output Not used in this set. (Open) GPIN Fixed at “L”...
  • Page 78 HCD-GTX777/GTX787/GTX888 • IC Pin Function Descriptions IC901 TMP92CD28AFG-6VD8 (USB CONTROLLER) (USB BOARD) Pin No. Pin Name Pin Description RESET Reset signal input from the system controller “L”: reset PC0/INT0 Ready to send signal input from the system controller PC1/INT1 Not used in this set. Connected to ground. PC2/INT2/TB1IN0 Not used in this set.
  • Page 79 HCD-GTX777/GTX787/GTX888 Pin No. Pin Name Pin Description PF2/SCLK0/CTS0/ Serial data transfer clock signal output CLK/TB0OUT0 PF3/TXD1/SPDO Serial data signal output to the system controller PF4/RXD1/SPDI Serial data signal input from the system controller PF5/SCLK1/CTS1/SPCLK Not used in this set. (Open) PN1/SDA0/TA3OUT/SO0 Two-way EEPROM IIC data bus Not used in this set.

  • Page 80: Exploded Views

    HCD-GTX777/GTX787/GTX888 SECTION 7 EXPLODED VIEWS NOTE: • Accessories are given in the last of this • The mechanical parts with no reference parts list. The components identifi ed by mark 0 or dotted line with mark number in the exploded views are not 0 are critical for safety.

  • Page 81: Back Panel Section

    HCD-GTX777/GTX787/GTX888 Ver. 1.1 7-2. BACK PANEL SECTION T U 9 0 1 n o t s u p p l i e d ( S u b T r a n s B o a r d ) C D b l o c k s e c t i o n M 8 9 1 n o t s u p p l i e d M 8 9 2...

  • Page 82: Front Panel Section (1)

    HCD-GTX777/GTX787/GTX888 7-3. FRONT PANEL SECTION (1) not supplied not supplied (USB CONNECTOR board) not supplied front panel section (2) (MIC board) Ref. No. Part No. Description Remark 1-921-201-91 WIRE (FLAT TYPE) (11 CORE) 3-087-053-01 +BVTP2.6 (3CR) 1-840-020-11 MECHA DECK 2-895-507-01 KNOB (MIC)

  • Page 83: Front Panel Section (2)

    HCD-GTX777/GTX787/GTX888 Ver. 1.1 7-4. FRONT PANEL SECTION (2) METER DISPLAY ASSY not supplied (PANEL FUNCTION board) not supplied (CD-SW board) not supplied (ILLUMINATION board) not supplied (JOG board) not supplied supplied with S935 not supplied Ref. No. Part No. Description Remark Ref.

  • Page 84: Meter Display Assy

    HCD-GTX777/GTX787/GTX888 7-5. METER DISPLAY ASSY not supplied (METER DISPLAY board) not supplied (METER SWITCH board) not supplied (METER LED board) Ref. No. Part No. Description Remark 4-218-253-42 SCREW (M2-6), +BTTP 1-787-718-11 STEPPING MOTOR A-1486-921-A METER DISPLAY ASSY 7-685-853-04 SCREW +BVTT 2X6 (S)

  • Page 85: Chassis Section

    HCD-GTX777/GTX787/GTX888 Ver. 1.1 7-6. CHASSIS SECTION not supplied not supplied (Trans board) (Subwoofer board) F1271 F1261 F1281 not supplied F1251 F1241 F1282 PT1201 M893 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-785-504-11 Adaptor, Conversion (E2, E3, E51) A-1471-087-A POWER BOARD, COMPLETE (AEP) 1-777-071-83 CORD, POWER (AEP, E2, E3, E51) A-1471-108-A POWER BOARD, COMPLETE (GTX787: E2)

  • Page 86: Cd Mechanism Section (1)

    HCD-GTX777/GTX787/GTX888 7-7. CD MECHANISM SECTION (1) (CDM74KF-K6BD93UR-WOD) M741 CD mechanism section-2 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-218-253-42 SCREW (M2.6), +BTTP 4-243-820-01 GEAR (TABLE) 1-828-938-11 WIRE (FLAT TYPE) (5 CORE) (EXCEPT MX) 4-243-819-01 GEAR (GENEVA) 1-832-798-21 CABLE, FLEXIBLE FLAT (5 CORE) (MX) 4-243-816-11 TRAY 1-687-134-12 MOTOR (TB) BOARD...

  • Page 87: Cd Mechanism Section (2)

    HCD-GTX777/GTX787/GTX888 Ver. 1.1 7-8. CD MECHANISM SECTION (2) (CDM74KF-K6BD93UR-WOD) RE701 M751 S201 n o t s u p p l i e d ( T C B o a r d ) Ref. No. Part No. Description Remarks Ref. No. Part No.

  • Page 88: Electrical Parts List

    HCD-GTX777/GTX787/GTX888 SECTION 6 BD93 ELECTRICAL PARTS LIST The components identifi ed by mark 0 or Note: • COILS dotted line with mark 0 are critical for safety. • Due to standardization, replacements in uH: µH Replace only with part number specifi ed. the parts list may be different from the parts specifi...
  • Page 89 HCD-GTX777/GTX787/GTX888 BD93 CD SW Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark IC502 6-707-870-01 IC TC74VHC157FT (EKJ) R222 1-216-845-11 METAL CHIP 100K 1/10W R223 1-216-845-11 METAL CHIP 100K 1/10W < TRANSISTOR > R224 1-216-809-11 METAL CHIP 1/10W Q301 6-551-120-01...
  • Page 90 HCD-GTX777/GTX787/GTX888 DRIVER (F) ILLUMINATION Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-1103-756-B DRIVER (F) BOARD, COMPLETE (MX) ILLUMINATION BOARD A-1126-591-A DRIVER (F) BOARD, COMPLETE (EXCEPT MX) **************************** ************************ < CONNECTOR > < CAPACITOR > CN968 1-784-737-11 CONNECTOR, FFC 15P C715...
  • Page 91 HCD-GTX777/GTX787/GTX888 Ver. 1.1 ILLUMINATION MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark S924 1-771-410-21 SWITCH, TACTILE (PRESET EQ) (EXCEPT AEP) 1-126-964-11 ELECT 10uF S925 1-762-875-21 SWITCH, KEYBOARD 1-126-964-11 ELECT 10uF (FAST FORWARD/FOLDER +) (AEP) 1-126-964-11 ELECT 10uF S925...
  • Page 92 HCD-GTX777/GTX787/GTX888 Ver. 1.1 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C120 1-126-963-11 ELECT 4.7uF C416 1-126-916-11 ELECT 1000uF 6.3V C417 1-115-416-11 CERAMIC CHIP 0.001uF C121 1-126-961-11 ELECT 2.2uF C437 1-107-826-11 CERAMIC CHIP 0.1uF C144 1-126-964-11 ELECT 10uF...
  • Page 93 HCD-GTX777/GTX787/GTX888 Ver. 1.1 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C2057 1-107-826-11 CERAMIC CHIP 0.1uF < IC > (GTX888) C2058 1-110-563-11 CERAMIC CHIP 0.068uF IC50 6-712-027-01 IC R2A15216FP (GTX888) IC51 8-759-100-96 IC NJM4558M-TE2 IC100 8-759-100-96 IC NJM4558M-TE2 <...
  • Page 94 HCD-GTX777/GTX787/GTX888 Ver. 1.1 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark JR136 1-216-296-11 SHORT CHIP Q221 8-729-620-07 TRANSISTOR 2SC3052EF-T1-LEF Q222 8-729-027-44 TRANSISTOR DTC114TKA-T146 JR137 1-216-296-11 SHORT CHIP Q223 8-729-027-44 TRANSISTOR DTC114TKA-T146 JR138 1-216-296-11 SHORT CHIP JR139 1-216-296-11 SHORT CHIP...
  • Page 95 HCD-GTX777/GTX787/GTX888 Ver. 1.1 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-216-821-11 METAL CHIP 1/10W R131 1-249-401-11 CARBON 1/4W 1-216-833-11 METAL CHIP 1/10W R132 1-216-809-11 METAL CHIP 1/10W 1-216-821-11 METAL CHIP 1/10W R133 1-216-833-11 METAL CHIP 1/10W R134 1-249-401-11...
  • Page 96 HCD-GTX777/GTX787/GTX888 Ver. 1.1 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R331 1-216-825-11 METAL CHIP 2.2K 1/10W R461 1-216-809-11 METAL CHIP 1/10W R465 1-216-821-11 METAL CHIP 1/10W R341 1-216-833-11 METAL CHIP 1/10W R466 1-216-809-11 METAL CHIP 1/10W R346 1-216-833-11...
  • Page 97 HCD-GTX777/GTX787/GTX888 MAIN METER DISPLAY Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R536 1-216-841-11 METAL CHIP 1/10W METER DISPLAY BOARD ****************************** R538 1-216-825-11 METAL CHIP 2.2K 1/10W R539 1-216-845-11 METAL CHIP 100K 1/10W < CAPACITOR > R540 1-216-821-11 METAL CHIP...
  • Page 98 HCD-GTX777/GTX787/GTX888 MOTOR METER DISPLAY PANEL FUNCTION Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark METER DISPLAY SW BOARD R1170 1-216-821-11 METAL CHIP 1/10W *********************************** R1173 1-216-833-11 METAL CHIP 1/10W < RESISTOR > R1175 1-216-821-11 METAL CHIP 1/10W R1177 1-216-845-11...
  • Page 99 HCD-GTX777/GTX787/GTX888 PANEL FUNCTION Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D915 6-502-469-01 DI SLI-325URT31 (GROOVE) R988 1-216-821-11 METAL CHIP 1/10W D918 8-719-032-28 DIODE MA8027-H-TX R1070 1-216-833-11 METAL CHIP 1/10W D940 6-501-730-01 DIODE MAZ8051GMLS0 R1071 1-216-833-11 METAL CHIP 1/10W D941...
  • Page 100 HCD-GTX777/GTX787/GTX888 PANEL JOG POWER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CONNECTOR > PANEL JOG BOARD ************************ CN601 1-785-315-11 PIN, CONNECTOR (STRAIGHT) 3P < CAPACITOR > * CN610 1-774-876-21 CONNECTOR, BOARD TO BOARD 8P * CN611 1-774-876-21 CONNECTOR, BOARD TO BOARD 8P...
  • Page 101 HCD-GTX777/GTX787/GTX888 Ver. 1.1 POWER SENSOR SUB TRANS Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R609 1-216-843-11 METAL CHIP 1/10W R692 1-216-841-11 METAL CHIP 1/10W R695 1-216-845-11 METAL CHIP 100K 1/10W R611 1-216-839-11 METAL CHIP 1/10W R696 1-216-845-11 METAL CHIP...
  • Page 102 HCD-GTX777/GTX787/GTX888 SUB TRANS SUB WOOFER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D1202 6-501-579-01 DIODE MC2837 < IC > D1210 6-500-335-01 DIODE MC2838-T112-1 IC800 6-710-842-01 IC STK433-130-E < TRANSFORMER > < TRANSISTOR > PT1200 1-443-927-21 TRANSFORMER, POWER (MX) PT1200 1-443-928-21...
  • Page 103 HCD-GTX777/GTX787/GTX888 Ver. 1.1 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-687-669-12 SW BOARD < DIODE > ************** D301 6-501-722-01 DIODE MAZ8043GMLS0 < SWITCH > D401 6-500-335-01 DIODE MC2838-T112-1 S751 1-786-514-11 SWITCH, LEVER (SLIDE) < IC > (OPEN/CLOSE DETECT) IC301 8-759-100-96...
  • Page 104 HCD-GTX777/GTX787/GTX888 Ver. 1.1 TRANS USB R Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R404 1-216-841-11 METAL CHIP 1/10W TRANS BOARD R405 1-216-841-11 METAL CHIP 1/10W ****************** R406 1-216-841-11 METAL CHIP 1/10W < CAPACITOR > R407 1-218-867-11 METAL CHIP 6.8K...
  • Page 105 HCD-GTX777/GTX787/GTX888 Ver. 1.1 USB R USB CONNECTOR Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C913 1-107-826-11 CERAMIC CHIP 0.1uF R934 1-216-833-11 METAL CHIP 1/10W C914 1-107-826-11 CERAMIC CHIP 0.1uF R937 1-216-809-11 METAL CHIP 1/10W C915 1-107-826-11 CERAMIC CHIP 0.1uF R938...
  • Page 106 HCD-GTX777/GTX787/GTX888 Ver. 1.1 USB CONNECTOR Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < RESISTOR > R1054 1-216-819-11 METAL CHIP 1/10W R1056 1-216-819-11 METAL CHIP 1/10W R1057 1-216-864-11 SHORT CHIP R1058 1-216-864-11 SHORT CHIP *********************************************************************************************** MISCELLANEOUS ********************** 1-828-953-11 WIRE (FLAT TYPE) (9 CORE) (EXCEPT AEP)
  • Page 107 HCD-GTX888/GTX777/GTX787 MEMO...

  • Page 108: Revision History

    HCD-GTX777/GTX787/GTX888 REVISION HISTORY Checking 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 2008.04 2008.05 Correction of “Tape Mechanism Type”, “Disassembly”, Part No.

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