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Sony HCD-DX155 Service Manual

Super audio cd/dvd receiver.
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HCD-DX155/DX255

SERVICE MANUAL

Ver. 1.2 2006.04
HCD-DX155/DX255 are the amplifier, DVD/CD
and tuner section in DAV-DX155/DX255.
This system incorporates with Dolby*
adaptive matrix surround decoder and the DTS*
System.
*1 Manufactured under license from Dolby Laboratories.
"Dolby," "Pro Logic," and the double-D symbol are trademarks of
Dolby Laboratories.
*2 Manufactured under license from Digital Theater Systems, Inc.
"DTS" and "DTS Digital Surround" are trademarks of Digital
Theater Systems, Inc.
AUDIO POWER SPECIFICATIONS
for the US model
DX155
POWER OUTPUT AND
TOTAL HARMONIC
DISTORTION
(FTC Output Power):
FL/FR/LS/RS/C: 84 W/ch
3 ohm at 170 - 20,000 Hz,
0.7 % THD
SW: 80 W 3 ohm at 40 -
170 Hz, 0.7 % THD
DX255
POWER OUTPUT AND
TOTAL HARMONIC
DISTORTION
(FTC Output Power):
FL/FR/LS/RS/C: 84 W/ch
3 ohm at 170 - 20,000 Hz,
0.7 % THD
SW: 160 W 1.5 ohm at 40 -
170 Hz, 0.7 % THD
Amplifier section
DX155
US models:
Surround mode (reference) RMS output power, 10 %
THD
Front: 142 W + 142 W
(with SS-TS52)
Sony Corporation
9-887-098-03
Home Audio Division
2006D16-1
Published by Sony Techno Create Corporation
© 2006.04
Photo : HCD-DX255
1
Digital and Dolby Pro Logic (II)
2
Digital Surround
SPECIFICATIONS
Mexican and other models:
Stereo mode (rated)
Surround mode (reference) RMS output power, 10 %
Latin American models:
Stereo mode (rated)
Surround mode (reference) RMS output power, 10 %
Model Name Using Similar Mechanism
Mechanism Type
Optical Pick-up Name
Center*: 142 W
(with SS-CT51)
Surround*: 142 W + 142
W
(with SS-TS51)
Subwoofer*: 140 W
(with SS-WS52)
108 W + 108 W (3 ohms at
1 kHz, 1 % THD)
DX255
US models:
THD
Surround mode (reference) RMS output power, 10 %
Front: 142 W + 142 W
(with SS-TS52)
Center*: 142 W
(with SS-CT51)
Surround*: 142 W + 142
W
(with SS-TS51)
Subwoofer*: 140 W
(with SS-WS52)
100 W + 100 W (3 ohms at
1 kHz, 1 % THD)
THD
SUPER AUDIO CD/DVD RECEIVER
US Model
Canadian Model
HCD-DX155/DX255
E Model
Australian Model
HCD-DX155
HCD-DX150
CDM81C-DVBU101
KHM-310CAB
Front: 133 W + 133 W
(with SS-TS52)
Center*: 133 W
(with SS-CT51)
Surround*: 133 W + 133
W
(with SS-TS51)
Subwoofer*: 135 W
(with SS-WS52)
THD
Front: 143 W + 143 W
(with SS-TS52)
Center*: 143 W
(with SS-CT51)
Surround*: 143 W + 143
W
(with SS-TS51)
Subwoofer*: 285 W
(with SS-WS52B)
— Continued on next page —

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Table of Contents

   Summary of Contents for Sony HCD-DX155

  • Page 1: Service Manual

    HCD-DX155/DX255 E Model Ver. 1.2 2006.04 Australian Model HCD-DX155 Photo : HCD-DX255 HCD-DX155/DX255 are the amplifier, DVD/CD and tuner section in DAV-DX155/DX255. This system incorporates with Dolby* Digital and Dolby Pro Logic (II) Model Name Using Similar Mechanism HCD-DX150 adaptive matrix surround decoder and the DTS*...
  • Page 2 HCD-DX155/DX255 General Other models: Tuner section Stereo mode (rated) 108 W + 108 W (3 ohms at Power requirements System PLL quartz-locked digital 1 kHz, 1 % THD) synthesizer system North American and Mexican models: Surround mode (reference) RMS output power, 10 %...
  • Page 3 LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
  • Page 4: Table Of Contents

    HCD-DX155/DX255 TABLE OF CONTENTS SERVICING NOTE 6-6. Printed Wiring Board – MAIN Board (Side A) – .... 35 ........... 5 6-7. Printed Wiring Board – MAIN Board (Side B) – .... 36 6-8. Schematic Diagram – MAIN Board (1/10) – ....37 GENERAL ..............
  • Page 5: Servicing Note

    [VER.X.XX] (X is a number) may seconds again. appear on the screen. Although this is not a 2. The message “UNLOCKED” is displayed and the tray is malfunction and for Sony service use only, unlocked. normal system operation will not be possible. Note : When “LOCKED”...
  • Page 6 HCD-DX155/DX255 HOW TO OPEN THE DISC TABLE WHEN POWER SWITCH TURNS OFF tweezers Insert tip of tweezers through the hole gear of bottom plate, and roate the gear in the counter-clockwise direction. DVD lid tape Attach an adhesive tape on the DVD LID and draw it out.
  • Page 7 HCD-DX155/DX255 Fix the capacitors with adhesive agent as follows Fixing the capacitors with adhesive agent is required by the safety regulation. Be sure to fix the capacitors with adhesive agent when part or circuit board is replaced. POWER BOARD Precaution on the connector processing of the POWER board.
  • Page 8: General

    HCD-DX155/DX255 SECTION 2 This section is extracted from instruction manual. GENERAL Front panel A "/1 (on/standby) (29) G PHONES jack (29) H VOLUME control (29) B Front panel display (92) I AUDIO IN/A.CAL MIC jack (19, 31) C A (open/close) (29)
  • Page 9 HCD-DX155/DX255 Front panel display About the indications in the front panel display A Lights up when the time information of G Playing status (DVD function only) a title or chapter appears in the front H Lights up when the DYNAMIC BASS is panel display.
  • Page 10: Remote Control

    HCD-DX155/DX255 Remote control ALPHABETICAL ORDER BUTTON DESCRIPTIONS [/1 (on/standby) 1 (19, 22, 29, A – O P – Z 37, 58) AMP MENU wg (22, 31, 60, 62, PICTURE NAVI 6 (37, 60) TV [/1 (on/standby) ej (60) PRESET +/– wk es (58)
  • Page 11: Disassembly

    HCD-DX155/DX255 SECTION 3 DISASSEMBLY 3-1. DISASSEMBLY FLOW • This set can be disassembled in the order shown below. • The dotted square with arrow ( ) prompts you to move to the next job when all of the works within the dotted square ( ) are completed.
  • Page 12: Case, Front Panel Assy

    HCD-DX155/DX255 Note: Follow the disassembly procedure in the numerical order given. 3-2. CASE, FRONT PANEL ASSY 4 two screws (CASE3 TP2) 6 five screws (+BVTP 3 × 8) 7 case 9 w ire (flat type) 5 two screws 23core (CN509)
  • Page 13: Fl Board, Sw Board

    HCD-DX155/DX255 3-3. FL BOARD, SW BOARD When reassembling, route the harness and flexible cable as shown in the illustration. 9 wire (flat type) 23core (CN801) 7 connector (CN811) qf button (power) 8 connector (CN805) hold plate (FFC) qd SW board qs two screws (+BVTP 2.6)
  • Page 14: I/o Board, Tuner

    HCD-DX155/DX255 Ver. 1.2 3-5. I/O BOARD, TUNER wire (flat type) 3 tuner 9core(CN203) I/O board connector 1 two screws (CN312) (+BVTT 3 × 6) wire (flat type) 2 wire (flat type) 13core(CN311) 9core wire (flat type) 7core(CN202) wire (flat type)
  • Page 15: Main Board

    HCD-DX155/DX255 Ver. 1.2 3-7. MAIN BOARD 6 wire (flat type) 13core (CN1301) When assembling, 7 connector clamp the three harnesses with 5 wire (flat type) 7core (CN1302) (CN303) a lead pin or a similar tool so 8 connector that they do not touch this screw.
  • Page 16: Power Board

    HCD-DX155/DX255 Ver. 1.2 3-8. POWER BOARD 6 five screws (+PWH 3 × 8) 7 POWER board 4 two screws (+BV 3) 5 shield (H/L) 1 connector (CN515) q; pc board holder 2 connector (CN3002) Installing the pc board holder two claws...
  • Page 17: Dvd Mechanism Deck (cdm81c-dvbu101)

    HCD-DX155/DX255 3-9. DVD MECHANISM DECK (CDM81C-DVBU101) 3 four screws (+BV 3) 4 MD COVER 2 Remove the harness and flexible cable. harness flexible cable 1 wire (flat type) 21core (CN508) 5 four screws (+BVTP 3 × 10) 6 DVD mechanism deck...
  • Page 18: Tray

    HCD-DX155/DX255 3-10. TRAY 2 two screws (+BTTP 2.6) 1 two screws 3 bracket (+BTTP 2.6) 5 tray 3-11. MOTOR BOARD M761 (LD/ST MOTOR), M762 (BU U/D MOTOR) 1 screw (+BTTP 2.6) 3 screw (+BTTP 2.6) 2 bracket 4 MOTOR board 5 Remove soldering from the two points.
  • Page 19: Base Unit (dvbu101)

    HCD-DX155/DX255 3-12. BASE UNIT (DVBU101) 1 two floating screws (+PTPWH2.6) 3 base unit (DVBU101) 2 floating screw (+PTPWH2.6) 3-13. OPTICAL PICK-UP (KHM-310CAB) qa insulator 7 insulator screw 3 insulator screw qs insulator 9 insulator 8 insulator screw 4 insulator screw...
  • Page 20: Gear (sub Tray 1), Gear (sub Tray 2)

    HCD-DX155/DX255 3-14. GEAR (SUB TRAY 1), GEAR (SUB TRAY 2) PRECAUTION DURING GEAR (SUB TRAY 1/2) INSTALLATION 1 five screws (+PTPWH 2.6 × 8) Align the marks of the gears as shown in the illustration. 4 three gears (sub tray 1)
  • Page 21: Stocker Section

    HCD-DX155/DX255 3-16. STOCKER SECTION 2 stocker section 1 Rotate the gear (SS3) in the direction of the arrow. 3-17. CAM (STOCKER) PRECAUTION DURING CAM (STOCKER) INSTALLATION Before installing the cams (stocker), fix the gear (stocker 3) in the manner so that the hole of the gear (stocker 3) should be...
  • Page 22: Gear (stocker 3)

    HCD-DX155/DX255 3-18. GEAR (STOCKER 3) PRECAUTION DURING GEAR (STOCKER 3) INSTALLATION 1 screw (+PTPWH 2.6 × 8) Be sure to align the rib of the gear (stocker 3) with the groove of the rotary encoder. 2 gear (stocker 3) groove...
  • Page 23: Gear (bu1)

    HCD-DX155/DX255 3-20. GEAR (BU1) 1 belt (sub tray) PRECAUTION DURING GEAR (BU1) INSTALLATION 4 screw 2 screw Before re-assembling, slide the cam (BU) in the direction of (+PTPWH 2.6 × 8) (+PTPWH 2.6 × 8) the arrow. Assemble the gear (BU1) in such a manner that the groove 3 pulley (BU) of the cam (BU) is aligned with the rib of the gear (BU1).
  • Page 24: Test Mode

    HCD-DX155/DX255 Ver. 1.2 SECTION 4 TEST MODE 3. Disc Tray Lock Note 1: Regarding the notification symbol “R” The disc tray lock function for the antitheft of an demonstration Because the number of the operating buttons of this product disc in the store is equipped.
  • Page 25: Dvd Section

    HCD-DX155/DX255 Ver. 1.2 8-4. MIRROR TIME ADJUSTMENT DVD SECTION To enter Mir ror Time Adjustment, press 5 “R” button on the r emote [TEST DISC LIST] commander . The scr een will a ppear as belo w. Be sur e to use the D VD disc tha t ma tches the signal standar ds of MIRR time Adjust Menu your r egion.
  • Page 26 HCD-DX155/DX255 (3) Select “5. MIRR time Adjust”. (14) Confirm the same values are displayed. If it is not same, return to step 7. Drive Manual Operation MIRR time Adjust Menu 1. Servo Control 2. Track/Layer Jump 1. CD MIRR time Check: 3.
  • Page 27 HCD-DX155/DX255 8-5. EXECUTING IOP MEASUREMENT (5) Wait until a hexadecimal number appear. Manual Adjust In order to execute mirror time adjustment, the following standard procedures must be followed. 1. Track Balance Adjust: 2. Track Gain Adjust: and A buttons (1) In standby mode, While pressing the 3.
  • Page 28: Electrical Adjustment

    HCD-DX155/DX255 SECTION 5 ELECTRICAL ADJUSTMENT Checking Location: MAIN board (Side A) DVD SECTION MAIN BOARD (SIDE A) When the base unit is replaced, perform the adjustment and the measurement as shown below in this order. IC501 1) MIRROR TIME ADJUSTMENT (See page 25)
  • Page 29: Diagrams

    HCD-DX155/DX255 SECTION 6 DIAGRAMS • Circuit Boards Location THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) For Schematic Diagrams. For Printed Wiring Boards. Note: Note: •...
  • Page 30: Block Diagram - Rf Section

    HCD-DX155/DX255 6-1. BLOCK DIAGRAM – RF SECTION – • Signal Path CN1105 : CD PLAY RFMON V2REFO V2REFO : DVD PLAY DVDRFIP TO DIAG JIG : SACD PLAY DVDA DVDB DETECTOR DVDC DVDD 8 NA IC504 IC701 9 NB LD/ST MOTOR DRIVE...
  • Page 31: Block Diagram - Amp Section

    HCD-DX155/DX255 6-2. BLOCK DIAGRAM – AMP SECTION – IC352 AUDIO INPUT SELECTOR IC353 11 X3 IC401 15 X2 IC2200 A/D CONVERTER L-CH 14 X1 – 1 LIN BOUT J401 – AMP LRCKO 12 X0 LRCK AUDIO IN AMP BCKO AMP MCKO...
  • Page 32: Block Diagram - Audio Section

    HCD-DX155/DX255 6-3. BLOCK DIAGRAM – AUDIO SECTION – IC3001 COMPARATOR J402 – PHONES – PLUG DET2 Q450,451 HPMUTE Q3081 Q460,461 MUTE SW IC3500 MUTE DX255 S-MASTER DIGITAL AMP • Signal Path PWMB OUTB : AUDIO PWMA OUTA RESET IC3030 S-MASTER PROCESSOR...
  • Page 33: Block Diagram - Video Section

    HCD-DX155/DX255 6-4. BLOCK DIAGRAM – VIDEO SECTION – IC201 VIDEO AMP, 75Ω DRIVE 2 CIN YUV2 J201 COUT S VIDEO 6 YIN YUV1 (DVD ONLY) YOUT YUV3 4 CVBSIN VIDEO CVBSOUT 10 CYIN YUV4 YUV5 12 CBIN CYOUT J202 COMPONENT...
  • Page 34: Block Diagram - Power Section

    HCD-DX155/DX255 6-5. BLOCK DIAGRAM – POWER SECTION – POWER Thermistor F901 T901 D901 TRANSFORMER(MAIN) AC IN LINE FILTER D931 IC901 D905 +31.5V Q901 T801 POWER VOLTAGE DC/DC PROTECTION CONTROLLER IC931 CONVERTER VOLTAGE DETECT PC901 TO FLUORESCENT PHOTO INDICATOR TUBE D801,802...
  • Page 35: Printed Wiring Board - Main Board (side A)

    HCD-DX155/DX255 Ver. 1.2 • See page 29 for Circuit Boards Location. 6-6. PRINTED WIRING BOARD – MAIN BOARD (SIDE A) – :Uses unleaded solder. New part of EEP ROM (IC1103) on the MAIN board cannot be used. FL BOARD Therefore, if the mounted MAIN board (A-1151-985-A, etc.) is replaced, CN801 exchange new EEP ROM (IC1103) with that used before the replacement.
  • Page 36: Printed Wiring Board - Main Board (side B)

    HCD-DX155/DX255 Ver. 1.2 • See page 29 for Circuit Boards Location. 6-7. PRINTED WIRING BOARD – MAIN BOARD (SIDE B) – :Uses unleaded solder. POWER BOARD JACK BOARD POWER BOARD CN902 CN403 CN904 (Page 54) (Page 49) (Page 54) (CHASSIS)
  • Page 37: Schematic Diagram - Main Board (1/10)

    HCD-DX155/DX255 Ver. 1.2 • See page 56 for IC Block Diagrams. 6-8. SCHEMATIC DIAGRAM – MAIN BOARD (1/10) – (CHASSIS) EB3001 TERMINAL BOARD MAIN BOARD (2/10) (Page 38) R3060 R3062 R3063 R3064 R3059 TP3003 R3065 C3035 C3034 TP3004 ICT3063 R3066...
  • Page 38: Schematic Diagram - Main Board (2/10)

    HCD-DX155/DX255 Ver. 1.2 6-9. SCHEMATIC DIAGRAM – MAIN BOARD (2/10) – DX255 MAIN BOARD (1/10) (Page 37) ICT3010 C3406 C3403 0.033 ICT3011 C3551 1 50V ICT3060 R3061 R3403 TP3410 C3413 C3412 R3404 R3551 ICT3061 100k 1/10W R3407 C3415 L3402 27.8 11.9 11.9 0...
  • Page 39: Schematic Diagram - Main Board (3/10)

    HCD-DX155/DX255 • See page 56 for Waveform. • See page 56, 57 for IC Block Diagrams. 6-10. SCHEMATIC DIAGRAM – MAIN BOARD (3/10) – R3055 C3015 C3014 R3011 470 1/10W R3050 ICT3003 ICT3004 R3012 Q3081 TP3011 1/10W RT1P141C-TP-1 R3151 C3083...
  • Page 40: Schematic Diagram - Main Board (4/10)

    HCD-DX155/DX255 Ver. 1.2 6-11. SCHEMATIC DIAGRAM – MAIN BOARD (4/10) – Q3202 Q3252 2SA1235TP-1EF 2SA1235TP-1EF ICT3027 C3206 C3203 0.033 Q3201 Q3251 2SA1235TP-1EF ICT3028 2SA1235TP-1EF R3203 C3213 TP3210 C3212 C3221 C3271 R3204 R3207 C3215 C3220 0.0022 50V B L3202 ICT3056 ICT3055...
  • Page 41: Schematic Diagram - Main Board (5/10)

    HCD-DX155/DX255 Ver. 1.2 • See page 56 for Waveform. • See page 59 for IC Pin Function Description. 6-12. SCHEMATIC DIAGRAM – MAIN BOARD (5/10) – DX155 DX155 DX155 DX155: CND, US/DX255 DX255 DX155 DX155: AUS, E3 DX155 /DX255 DX155: SP...
  • Page 42: Schematic Diagram - Main Board (6/10)

    HCD-DX155/DX255 Ver. 1.2 6-13. SCHEMATIC DIAGRAM – MAIN BOARD (6/10) – C582 IC516 IC TA7805LS C580 2200 6.3V C601 C602 C603 100 10V C517 0.001 C525 C506 C598 C510 C511 R506 C504 FB501 C507 C505 Q502 RSR025N03 FL501 FL502 R507...
  • Page 43: Schematic Diagram - Main Board (7/10)

    HCD-DX155/DX255 6-14. SCHEMATIC DIAGRAM – MAIN BOARD (7/10) – IC1107 TK11133CSC L-G ICT1129 C1193 C1195 0.22 0.22 C1192 FL1101 0.01 25V B C1101 CN1101 0.01 JL1139 C1120 1 10V B JL1140 C1121 1 10V B C1122 1 10V B C1123...
  • Page 44: Schematic Diagram - Main Board (8/10)

    HCD-DX155/DX255 • See page 56 for Waveforms. • See page 62 for IC Pin Function Description. 6-15. SCHEMATIC DIAGRAM – MAIN BOARD (8/10) – R2120 R2121 R2122 R2123 C1163 R2124 C1137 C1139 C1140 C1146 C1161 0.01 R1171 0.01 R2125 R1136...
  • Page 45: Schematic Diagram - Main Board (9/10)

    HCD-DX155/DX255 Ver. 1.2 6-16. SCHEMATIC DIAGRAM – MAIN BOARD (9/10) – New part of EEP ROM (IC1103) on the MAIN board cannot be used. Therefore, if the mounted MAIN board (A-1151-985-A, etc.) is replaced, exchange new EEP ROM (IC1103) with that used before the replacement.
  • Page 46: Schematic Diagram - Main Board (10/10)

    HCD-DX155/DX255 6-17. SCHEMATIC DIAGRAM – MAIN BOARD (10/10) – R1234 ICT550 R1223 R1225 100k 100k 1/10W 1/10W 0.5% 0.5% C1209 R1230 0.033 1/10W C1228 C1212 0.5% 0.0047 0.01 R1221 1/10W 0.5% R1220 C1214 ICT551 0.001 C1215 ICT549 0.01 25V B...
  • Page 47: Printed Wiring Board - I/o Board

    HCD-DX155/DX255 • See page 29 for Circuit Boards Location. 6-18. PRINTED WIRING BOARD – I/O BOARD – :Uses unleaded solder. • Semiconductor COMPONENT Location VIDEO OUT Ref. No. Location VIDEO IC201 MONITOR OUT IC352 TV/VCR IC353 S VIDEO IC360 (DVD ONLY)
  • Page 48: Schematic Diagram - I/o Board

    HCD-DX155/DX255 Ver. 1.2 • See page 56 for Waveforms. • See page 57 for IC Block Diagrams. 6-19. SCHEMATIC DIAGRAM – I/O BOARD – CN203 CN312 AMP-S 5P C345 R381 R382 TP353 C349 R356 TP354 4.7k TP355 C346 22 25V...
  • Page 49: Printed Wiring Boards - Panel Section

    HCD-DX155/DX255 Ver. 1.2 • See page 29 for Circuit Boards Location. 6-20. PRINTED WIRING BOARDS – PANEL SECTION – :Uses unleaded solder. MAIN BOARD CN509 (Page 35) IC801 IC802 I/O BOARD CN312 (Page 47) FUNCTION > VOLUME – IC803 DISC 5...
  • Page 50: Schematic Diagram - Panel Section

    HCD-DX155/DX255 Ver. 1.2 • See page 57, 58 for IC Block Diagrams. 6-21. SCHEMATIC DIAGRAM – PANEL SECTION – Q814 Q815 RT1P141C-TP-1 RT1P141C-TP-1 R835 R834 R833 R836 D812 D813 SML79423C-TP15 SML79423C-TP15 R852 R851 R827 R828 R829 R830 R841 2.2k Q816 2.2k...
  • Page 51: Printed Wiring Board - Speaker Board

    HCD-DX155/DX255 • See page 29 for Circuit Boards Location. 6-22. PRINTED WIRING BOARD – SPEAKER BOARD – 6-23. SCHEMATIC DIAGRAM – SPEAKER BOARD – :Uses unleaded solder. SPEAKER EP301 EARTH PLATE TB301 DICS 4P (CHASSIS) FRONT R FRONT L CENTER...
  • Page 52: Printed Wiring Boards - Cd Mechanism Section

    HCD-DX155/DX255 • See page 29 for Circuit Boards Location. 6-24. PRINTED WIRING BOARDS – CD MECHANISM SECTION – :Uses unleaded solder. • Semiconductor MOTOR BOARD Location Ref. No. Location D701 D711 IC701 IC711 IC751 Q751 SENSOR BOARD M761 M762 1-861-240-...
  • Page 53: Schematic Diagram - Cd Mechanism Section

    HCD-DX155/DX255 6-25. SCHEMATIC DIAGRAM – CD MECHANISM SECTION – • See page 58 for IC Block Diagrams. (5/10) CN508 (Page 41) HCD-DX155/DX255...
  • Page 54: Printed Wiring Board - Power Board

    HCD-DX155/DX255 • See page 29 for Circuit Boards Location. 6-26. PRINTED WIRING BOARD – POWER BOARD – :Uses unleaded solder. • Semiconductor (CHASSIS) Location Ref. No. Location D901 B-11 DX155: US, CND, MX/DX255 IC901 D905 D906 D907 D908 D909 D910...
  • Page 55: Schematic Diagram - Power Board

    HCD-DX155/DX255 6-27. SCHEMATIC DIAGRAM – POWER BOARD – DX155: US, CND/DX255 D931 FCU20UC20 DX155: E3, SP, AUS C938 DX155: MX DX155: MX DX155: E3, SP, AUS CN902 C931 EB905 (CHASSIS) TP903 WIRE 3P 47000p CN901 C965 TH901 FH901 FH902 0.001...
  • Page 56 HCD-DX155/DX255 • IC Block Diagrams • Waveforms – I/O Board – – MAIN Board – – MAIN Board – IC1101 6 (DVDRFIP) IC201 wd (CVBS) IC201 w; (CYOUT) IC2200 PCM1803DBR 2.5 Vp-p 2.2 Vp-p 5 th Order Single-End Delta-Sigma MODE1...
  • Page 57: Main Board

    HCD-DX155/DX255 – MAIN Board – – LED Board – IC3050 TK11118CSCL-G IC803 BU2099FV 17 16 15 14 13 12 12 BIT CONTROL SHIFT OVER HEAT & CIRCUIT REGISTER OVER CURRENT PROTECTION OUTPUT 12 BIT BUFFER CONTROL STORAGE (OPEN DRAIN) CIRCUIT...
  • Page 58: Relay Board

    HCD-DX155/DX255 – FL Board – IC802 PT6315 Grid driver Multiplexed driver SEG19/GRID10 Command decoder LED1 SEG18/GRID11 LED2 Display memory LED3 SEG17/GRID12 24 bits x 12 words LED4 Timing generator key scan DOUT SEG16/KS16 Key data memory Serial SEG15/KS15 (2 x 16 bits)
  • Page 59 HCD-DX155/DX255 • IC Pin Function Description MAIN BOARD IC501 M30622MEP-A61FPU0 (SYSTEM CONTROLLER) Pin No. Pin Name Description DAMP_SCDT/ DAMP processor and Diat data output DIAT_SDATA DAMP_SHIFT/ DAMP processor and Diat clock output DIAT_SCLK DSP_INTR DSP interrupt (not used) SIRCS_IN Sircs input...
  • Page 60 HCD-DX155/DX255 Pin No. Pin Name Description DRIVE_OCP (DIAG) DAMP driver shut down OVERFLOW1 DAMP processor F/C/S over flow detect OVERFLOW2 DAMP processor SW over flow detect WRITE CE Flash write CE (not used) DAMP LATCH1 DAMP processor latch1 DAMP LATCH2...
  • Page 61 HCD-DX155/DX255 Pin No. Pin Name Description IO_DO I/O expander IC data input IO_CLK I/O expander IC clock output MONO/ST_DET Front jack MONO or STEREO detect A.CAL MIC LEVEL MIC level detect fot auto calibration DESTINATION Destination select input MODEL Model select input...
  • Page 62 HCD-DX155/DX255 MAIN BOARD IC1101 CXD9849R (CD/DVD RF AMP, FOCUS/TRACKING ERR AMP, DVD SYSTEM PROCESSOR, DIGITAL SERVO PROCESSOR) Pin No. Pin Name Description AGND — Ground terminal DVDA AC coupled input path A DVDB AC coupled input path B DVDC AC coupled input path C...
  • Page 63 HCD-DX155/DX255 Pin No. Pin Name Description DSEL — Not used WIDE Wide switch signal input tenminal Mute signal control input MAMUTE MAMUTE signal output to system controller (IC501) (not used) DVDD18 — Power supply (+1.8V from IC1109) 53 to 58...
  • Page 64 HCD-DX155/DX255 Pin No. Pin Name Description DQMO DQM0 signal output to SD-RAM (IC1104) MREQ DQM signal input (not used) Data bus 7 from SD-RAM (IC1104) DVSS — Ground terminal 117, 118 RD 6, 5 Data bus 6, 5 from SD-RAM (IC1104) DVSS —...
  • Page 65 HCD-DX155/DX255 Pin No. Pin Name Description LIMSW LIMSW signal output to optical pick-up OCSW SEN signal input from system controller (IC501)/OCSW signal input REW signal output to IC1201 CKSW CKSW signal input (not used) — Not used — Not used DVDD3 —...
  • Page 66 HCD-DX155/DX255 Pin No. Pin Name Description SDPIF — SPDIF output (not used) RFGND18 — Ground terminal RFVDD18 — Power supply (RF+1.8V) XTALO Oscillator output signal (27MHz) XTALI Oscillator input signal (27MHz) JITFO RF jitter meter output JITFN Negative input of operation amplifier for RF jigger meter PLLVSS —...
  • Page 67: Exploded Views

    HCD-DX155/DX255 SECTION 7 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • The mechanical parts with no reference The components identified by mark 0 or may have some difference from the original number in the exploded views are not supplied.
  • Page 68: Front Panel Section

    HCD-DX155/DX255 7-2. FRONT PANEL SECTION supplied supplied supplied supplied S800 including S800 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 2-654-836-01 KNOB (VOL) 2-653-941-01 BUTTON (POWER) 2-654-835-01 RING (VOL) 3-087-053-01 +BVTP2.6 (3CR) 2-653-097-01 ORNAMENT (RIGHT) 2-653-091-01 BUTTON (DISC)
  • Page 69: Chassis Section

    HCD-DX155/DX255 Ver. 1.2 Note: If the wire (flat type) was replaced, fold it some as the wire (flat type) before replacement. 7-3. CHASSIS SECTION not supplied supplied 103 104 supplied supplied F901 supplied (DX155 : SP, AUS, E3) (Except DVD mechanism...
  • Page 70: Dvd Mechanism Deck Section-1 (cdm81c-dvbu101)

    HCD-DX155/DX255 7-4. DVD MECHANISM DECK SECTION-1 (CDM81C-DVBU101) not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-251-849-01 LEVER (SW2) 4-251-829-02 TRAY (SUB) 4-251-991-01 SPRING (SW2), TORSION 4-251-860-01 LEVER (LOCK) 4-985-672-01 SCREW (+PTPWH M2.6), FLOATING 4-251-867-01 SPRING (LOCK), TORSION...
  • Page 71: Dvd Mechanism Deck Section-2 (cdm81c-dvbu101)

    HCD-DX155/DX255 7-5. DVD MECHANISM DECK SECTION-2 (CDM81C-DVBU101) not supplied not supplied M761 M762 S771 not supplied not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-251-870-01 BELT (BU) 4-251-854-01 GEAR (BU1) 4-251-869-01 BELT (MAIN TRAY)
  • Page 72: Dvd Mechanism Deck Section-3 (cdm81c-dvbu101)

    HCD-DX155/DX255 7-6. DVD MECHANISM DECK SECTION-3 (CDM81C-DVBU101) not supplied CDM81C-DVBU101 not supplied not supplied S781 not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-985-672-01 SCREW (+PTPWH M2.6), FLOATING 4-251-823-01 CHASSIS (CDM81) 4-251-873-01 SPRING (MODE), COMPRESSION...
  • Page 73: Base Unit (dvbu101)

    HCD-DX155/DX255 7-7. BASE UNIT (DVBU101) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-4956-097-1 HOLDER (310) ASSY 3-087-599-01 INSULATOR SCREW 0 302 8-820-291-02 OPTICAL PICK-UP (KHM-310CAB/C2RP) 7-685-534-19 SCREW +BTP 2.6X8 TYPE2 N-S 2-634-618-01 INSULATOR...
  • Page 74: Electrical Parts List

    HCD-DX155/DX255 SECTION 8 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • RESISTORS When indicating parts by reference number, parts list may be different from the parts All resistors are in ohms. please include the board name.
  • Page 75 HCD-DX155/DX255 Ver. 1.2 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < TRANSFORMER > CN311 1-779-281-11 CONNECTOR, FFC (LIF (NON-ZIF)) 13P CN312 1-785-317-11 PIN, CONNECTOR (STRAIGHT) 5P T801 1-443-645-11 TRANSFORMER, DC CONVERTER < IC > *************************************************************...
  • Page 76 HCD-DX155/DX255 Ver. 1.2 JACK Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D493 6-501-193-01 DIODE 1SS355WTE-17 R349 1-216-833-11 METAL CHIP 1/10W D496 6-501-193-01 DIODE 1SS355WTE-17 R350 1-216-833-11 METAL CHIP 1/10W R356 1-216-829-11 METAL CHIP 4.7K 1/10W...
  • Page 77 HCD-DX155/DX255 JACK Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R415 1-216-821-11 METAL CHIP 1/10W < TRANSISTOR > R420 1-216-845-11 METAL CHIP 100K 1/10W R421 1-216-817-11 METAL CHIP 1/10W Q811 8-729-027-23 TRANSISTOR RT1P141C-TP-1 Q812 8-729-027-23 TRANSISTOR...
  • Page 78 HCD-DX155/DX255 Ver. 1.2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-1151-985-A MAIN BOARD, COMPLETE (DX155: US, CND) A-1152-007-A MAIN BOARD, COMPLETE (DX155: SP) C1117 1-126-964-11 ELECT 10uF A-1152-028-A MAIN BOARD, COMPLETE (DX255) C1118 1-126-964-11 ELECT...
  • Page 79 HCD-DX155/DX255 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C1187 1-126-947-11 ELECT 47uF C1188 1-128-934-91 CERAMIC CHIP 0.33uF C3025 1-164-156-11 CERAMIC CHIP 0.1uF C1190 1-126-947-11 ELECT 47uF C3026 1-164-156-11 CERAMIC CHIP 0.1uF C3027 1-164-156-11 CERAMIC CHIP 0.1uF...
  • Page 80 HCD-DX155/DX255 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C3113 1-104-329-11 CERAMIC CHIP 0.1uF C3114 1-136-177-00 FILM C3259 1-112-246-11 ELECT 100uF C3115 1-136-177-00 FILM C3262 1-112-246-11 ELECT 100uF C3263 1-104-329-11 CERAMIC CHIP 0.1uF C3116 1-112-831-11 ELECT...
  • Page 81 HCD-DX155/DX255 Ver. 1.2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C3504 1-164-156-11 CERAMIC CHIP 0.1uF D3201 6-500-885-01 DIODE P6SMBJ33A-5 (DX255) D3202 6-500-885-01 DIODE P6SMBJ33A-5 C3505 1-107-725-11 CERAMIC CHIP 0.1uF D3251 6-500-885-01 DIODE P6SMBJ33A-5 (DX255)
  • Page 82 HCD-DX155/DX255 Ver. 1.2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark IC511 6-708-922-01 IC PST3635NR L3302 1-456-680-11 INDUCTOR 10uH L3401 1-456-680-11 INDUCTOR 10uH IC516 6-703-547-01 IC TA7805LS L3402 1-456-680-11 INDUCTOR 10uH IC1101 6-707-535-01 IC CXD9849R...
  • Page 83 HCD-DX155/DX255 Ver. 1.2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R596 1-216-841-11 METAL CHIP 1/10W R789 1-216-809-11 METAL CHIP 1/10W (DX155: US, CND, MX/DX255) R790 1-216-809-11 METAL CHIP 1/10W R597 1-216-809-11 METAL CHIP 1/10W...
  • Page 84 HCD-DX155/DX255 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R2151 1-216-827-11 METAL CHIP 3.3K 1/10W R1205 1-216-833-11 METAL CHIP 1/10W R2152 1-216-827-11 METAL CHIP 3.3K 1/10W R1206 1-216-833-11 METAL CHIP 1/10W R2161 1-216-864-11 SHORT CHIP...
  • Page 85 HCD-DX155/DX255 Ver. 1.2 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R3054 1-216-801-11 METAL CHIP 1/10W R3153 1-216-797-11 METAL CHIP 1/10W R3154 1-216-864-11 SHORT CHIP R3055 1-216-809-11 METAL CHIP 1/10W R3157 1-216-835-11 METAL CHIP 1/10W...
  • Page 86 HCD-DX155/DX255 Ver. 1.2 MAIN MOTOR POWER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R3324 1-216-833-11 METAL CHIP 1/10W RB1107 1-234-372-11 RES, NETWORK 100 (1005X4) R3325 1-216-845-11 METAL CHIP 100K 1/10W RB1108 1-234-372-11 RES, NETWORK 100 (1005X4)
  • Page 87 HCD-DX155/DX255 POWER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < DIODE > 0 C923 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 0 C924 1-126-961-11 ELECT 2.2uF 0 D901 8-719-082-57 DIODE D5SBA60F01 0 C925 0 D905 1-107-974-81 CERAMIC...
  • Page 88 HCD-DX155/DX255 POWER Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark L948 1-414-398-11 INDUCTOR 10uH (DX155: E3, SP, AUS) L951 1-414-398-11 INDUCTOR 10uH 0 R929 1-249-478-11 CARBON 1/2W < LINE FILTER > R931 1-218-859-11 METAL CHIP 3.3K 0.5%...
  • Page 89 HCD-DX155/DX255 RELAY SENSOR SPEAKER SW (1) SW (2) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-4750-232-A RELAY BOARD, COMPLETE C313 1-163-021-91 CERAMIC CHIP 0.01uF C314 1-163-021-91 CERAMIC CHIP 0.01uF ********************** C315 1-163-021-91 CERAMIC CHIP 0.01uF <...
  • Page 90 HCD-DX155/DX255 Ref. No. Part No. Description Remark 1-828-301-11 WIRE (FLAT TYPE) (7 CORE) 1-828-327-11 WIRE (FLAT TYPE) (13 CORE) 0 109 1-827-226-41 CORD, POWER (DX155: MX) 0 109 1-829-259-11 CORD, POWER (DX155: AUS) 0 109 1-830-188-11 CORD, POWER (DX155: E3, SP)
  • Page 91 HCD-DX155/DX255 MEMO...
  • Page 92: Revision History

    HCD-DX155/DX255 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 2006.02...

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