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Sony HCD-NEZ31 Service Manual
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Sony HCD-NEZ31 Service Manual

Mexican model compact disc deck receiver
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SERVICE MANUAL
Ver. 1.0 2006.08
• HCD-NEZ31 is the amplifier, CD player, tape deck
and tuner section in CMT-NEZ31.
Amplifier section
Continuous RMS power output (reference): 15 + 15 W (6 ohms at 1 kHz,
10% THD)
The following are measured at AC 120 V, 60 Hz
DIN power output (rated): 11 + 11 W (6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference): 15 + 15 W (6 ohms at 1 kHz,
10% THD)
Inputs
AUDIO IN: Sensitivity 250 mV, impedance 47 kilohms
Outputs
PHONES: Accepts headphones with an impedance of 8 ohms or more
SPEAKER: Accepts impedance of 6 to 16 ohms
CD player section
System: Compact disc and digital audio system
Laser Diode Properties
Emission Duration: Continuous
Laser Output*: Less than 44.6µW
* This output is the value measurement at a distance of 200 mm from the
objective lens surface on the Optical Pick-up Block with 7mm aperture.
Tape deck section
Recording system: 4-track 2-channel, stereo
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section:
Tuning range
87.5 – 108.0 MHz (50 kHz step)
Antenna: FM lead antenna
Antenna terminals: 75 ohms unbalanced
Intermediate frequency: 10.7 MHz
Sony Corporation
9-887-362-01
Personal Audio Division
2006H05-1
Published by Sony Techno Create Corporation
© 2006.08
HCD-NEZ31
Model Name Using Similar Mechanism
CD Section
Base Unit Name
Optical Pick-up block Name
Model Name Using Similar Mechanism
TAPE Section
Tape Transport Mechanism Type

SPECIFICATIONS

COMPACT DISC DECK RECEIVER
Mexican Model
HCD-NEZ30
BU-K8BD83S-WOD
KSM-213CDP
HCD-NEZ30
CMAL5Z235A
AM tuner section:
Tuning range
530 – 1,710 kHz (with 10 kHz tuning interval)
531 – 1,710 kHz (with 9 kHz tuning interval)
Antenna: AM loop antenna, external antenna terminal
Intermediate frequency: 450 kHz
General
Power requirements
AC 120 V, 60 Hz
Adjustable with voltage selector
Power consumption:
45 watts
Dimensions (w/h/d) (excl. speakers):
Approx. 164 × 235 × 265 mm
Mass (excl. speakers):
Approx. 3.3 kg
Design and specifications are subject to change without notice.

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Summary of Contents for Sony HCD-NEZ31

  • Page 1: Specifications

    HCD-NEZ31 SERVICE MANUAL Mexican Model Ver. 1.0 2006.08 • HCD-NEZ31 is the amplifier, CD player, tape deck and tuner section in CMT-NEZ31. Model Name Using Similar Mechanism HCD-NEZ30 CD Section Base Unit Name BU-K8BD83S-WOD Optical Pick-up block Name KSM-213CDP Model Name Using Similar Mechanism...

  • Page 2: Table Of Contents

    COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

  • Page 3: Servicing Notes

    HCD-NEZ31 SECTION 1 SERVICING NOTES LASER DIODE AND FOCUS SEARCH OPERATION NOTES ON HANDLING THE OPTICAL PICK-UP CHECK BLOCK OR BASE UNIT During normal operation of the equipment, emission of the laser The laser diode in the optical pick-up block may suffer electrostatic...
  • Page 4 HCD-NEZ31 SERVICE POSITION – CD BOARD – CD board cabinet (top) section – TAPE MECHANICAL DECK – tape mechanical deck...

  • Page 5: General

    HCD-NEZ31 SECTION 2 This section is extracted from instruction manual. GENERAL Basic Operations To stop automatic scanning Set the sound effect on the remote Press (stop) repeatedly to select “BASS” or “TREBLE,” and then To tune in a station with a weak signal press If “TUNED”...

  • Page 6: Other Operations

    HCD-NEZ31 Other Operations Select the sound source or prepare the tape. Creating your own CD program Recording onto a tape For Play Timer: (Program Play) You can record on a TYPE I (normal) tape in two ways: Press repeatedly until the desired sound source appears, and then press ENTER .

  • Page 7: Disassembly

    HCD-NEZ31 SECTION 3 DISASSEMBLY • This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW 3-2. CABINET (Page 7) 3-3. CABINET (TOP) SECTION (Page 8) 3-5. FRONT PANEL SECTION 3-4. BASE UNIT (BU-K8BD83S-WOD) (Page 9) (Page 8) 3-6.

  • Page 8: Cabinet (Top) Section

    HCD-NEZ31 3-3. CABINET (TOP) SECTION 6 cabinet (top) section 5 connector (S820) 4 wire (flat type) (23 core) (CN317) 1 screw 2 claw (BVTP2.6) 2 claw 1 screw (BVTP2.6) 3-4. BASE UNIT (BU-K8BD83S-WOD) 5 vibration proof rubber 2 four screws (green) (PWH2.6 ×...

  • Page 9: Front Panel Section

    HCD-NEZ31 3-5. FRONT PANEL SECTION 5 connector (CN301) 4 flexible flat cable (9 core) (FFC803) (CN900) 9 front panel section 2 flexible flat cable (11 core) (FFC804) (CN320) 3 flexible flat cable (17 core) (FFC805) (CN321) 1 flexible flat cable (13 core) (FFC501)

  • Page 10: Main Board

    HCD-NEZ31 3-7. MAIN BOARD 2 screw (BVTT3 × 8) 4 wire (flat type) (9 core) 9 heat sink (CN319) 0 Remove two solders. 1 two connectors 5 screw (CN902, CN903) 7 IC bracket (BVTP3 × 8) 6 screw (BVTP3 × 12) 8 screw (BVTP3 ×...

  • Page 11: Test Mode

    HCD-NEZ31 SECTION 4 TEST MODE COLD RESET CD ERROR HISTORY The cold reset clears all data including preset data stored in the When this mode is entered, optical pick-up error code is displayed RAM to initial conditions. Execute this mode when returning the with the 8-character format on the fluorescent indicator tube.

  • Page 12: Mechanical Adjustments

    HCD-NEZ31 SECTION 5 MECHANICAL ADJUSTMENTS CD POWER MANEGE PRECAUTION This mode is for switch the CD power supply on/off. Even if this 1. Clean the following parts with a denatured-alcohol-moistened state pulls out AC plug, it is held. swab :...

  • Page 13: Electrical Adjustments

    HCD-NEZ31 SECTION 6 ELECTRICAL ADJUSTMENTS 2. Turn the adjustment screw and check output peaks. If the peaks DECK SECTION 0 dB=0.775 V do not match for L-CH and R-CH, turn the adjustment screw so that outputs match within 1dB of peak.
  • Page 14 HCD-NEZ31 CD SECTION Note: 1. CD Block is basically constructed to operate without adjustment. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10 MΩ impedance. 4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.

  • Page 15: Diagrams

    HCD-NEZ31 SECTION 7 DIAGRAMS 7-1. BLOCK DIAGRAM – CD SERVO Section – OPTICAL PICK-UP BLOCK (KSM-213CDP) RFACO RFACI AOUT1 112 AOUT2 117 R-CH (Page 16) XTAI 109 AUTOMATIC X201 POWER CONTROL 16.9344MHz Q321 XTAO 108 • R-ch is omitted due to same as L-ch.

  • Page 16: Block Diagram - Main Section

    HCD-NEZ31 7-2. BLOCK DIAGRAM – MAIN Section – J321 19 AUX-L R-CH AUDIO IN OUT-L POWER J500 PHONES IC501 21 CD-L R-CH (Page 15) TUNER (FM/AM) FM 75Ω • R-ch is omitted due to same as L-ch. FM ANT L-OUT...
  • Page 17 HCD-NEZ31 • Note for Printed Wiring Boards and Schematic Diagrams • Circuit Boards Location Note on Printed Wiring Board: Note on Schematic Diagram: • X : parts extracted from the component side. • All capacitors are in µF unless otherwise noted. (p: pF) •...

  • Page 18: Printed Wiring Board - Cd Board

    HCD-NEZ31 • See page 17 for Circuit Boards Location. 7-3. PRINTED WIRING BOARD – CD Board – : Uses unleaded solder. CD BOARD (COMPONENT SIDE) CD BOARD M401 (SPINDLE) (CONDUCTOR SIDE) S201 (LIMIT) C403 R280 C405 C406 IC402 R451 R104...

  • Page 19: Schematic Diagram - Cd Board

    HCD-NEZ31 • See page 23 for Waveforms. • See page 23 for IC Block Diagrams. • See page 29 for IC Pin Function Description. 7-4. SCHEMATIC DIAGRAM – CD Board – C210 C208 (RFACI) C230 R256 100p C257 C274 CN301...

  • Page 20: Printed Wiring Boards - Main Section

    HCD-NEZ31 • See page 17 for Circuit Boards Location. 7-5. PRINTED WIRING BOARDS – MAIN Section – : Uses unleaded solder. (Page 24) (Page 18) (Page 26) PANEL CD BOARD DC BOARD MAIN BOARD BOARD CN102 CN903 C354 Q344 R226...

  • Page 21: Schematic Diagram - Main Section (1/2)

    HCD-NEZ31 7-6. SCHEMATIC DIAGRAM – MAIN Section (1/2) – (Page 22) (1/2) R236 C309 CN317 D304 D303 FB306 1000 1N4002B 1N4002B VM(7V) J321 C226 R237 C227 FB317 220p 4.7k 470p AUDIO IN MGND SCOR SCOR C126 R137 C127 SENS C321...

  • Page 22: Schematic Diagram - Main Section (2/2)

    HCD-NEZ31 7-7. SCHEMATIC DIAGRAM – MAIN Section (2/2) – • See page 23 for Waveforms. • See page 23 for IC Block Diagrams. (2/2) R135 R235 C218 R543 R547 100k 100k 47000p C118 HP-L R233 R234 R133 47000p HP-L R527...
  • Page 23 HCD-NEZ31 • Waveforms • IC Block Diagrams – CD Board – – MAIN Board – – PANEL Board – – CD Board – IC402 BA5947FM-E2 IC201 1 (LRCK) T301 4 IC801 qf (X1A) (CD PLAY mode) (REC mode) 3.3 Vp-p 81.6 Vp-p...

  • Page 24: Printed Wiring Board - Panel Board

    HCD-NEZ31 • See page 17 for Circuit Boards Location. 7-8. PRINTED WIRING BOARD – PANEL Board – : Uses unleaded solder. • Semiconductor Location (Page 20) (Page 20) Ref. No. Location MAIN BOARD MAIN BOARD D801 CN321 CN320 PANEL BOARD...

  • Page 25: Schematic Diagram - Panel Board

    HCD-NEZ31 • See page 23 for Waveforms. • See page 29 for IC Pin Function Description. 7-9. SCHEMATIC DIAGRAM – PANEL Board – LCD801 LIQUID CRYSTAL DISPLAY D804,805 (LCD BACK LIGHT) D804 SELU2B10A-SLF62 R725 R721 DATA R701 MP3-CLK R710 MP3-SSTB...

  • Page 26: Printed Wiring Boards - Dc Section

    HCD-NEZ31 • See page 17 for Circuit Boards Location. 7-10. PRINTED WIRING BOARDS – DC Section – : Uses unleaded solder. • Semiconductor Location (Page 27) Ref. No. Location BOARD D322 D911 D912 D913 D914 D916 CONNECT BOARD D917 D918...

  • Page 27: Printed Wiring Board - Ac Board

    HCD-NEZ31 • See page 17 for Circuit Boards Location. 7-11. PRINTED WIRING BOARD – AC Board – : Uses unleaded solder. AC BOARD 1-869-179- (14) CONNECT BOARD (Page 26) • Semiconductor Location Ref. No. Location D906 D907 D-10 D908 D-10...

  • Page 28: Schematic Diagram - Power Supply Section

    HCD-NEZ31 7-12. SCHEMATIC DIAGRAM – POWER SUPPLY Section – C914 D922 1SS355WTE-17 ACDET C922 +UNREG(SUB) C930 R906 GND(CT) C921 1000 RELAY R911 D910 D909 1N4002B 1N4002B R904 +4V REGULATOR IC903 4.7k TA7804LS D907 T901 CN903 D908 1N4002B R912 1N4002B R908...
  • Page 29 HCD-NEZ31 • IC Pin Function Description CD BOARD IC201 CXD3014A-201R (CD DSP) Pin No. Pin Name Description LRCK L/R sampling clock signal output terminal LRCKI L/R sampling clock signal input terminal PCMD Serial data output terminal PCMDI Serial data input terminal...
  • Page 30 HCD-NEZ31 Pin No. Pin Name Description AVDD0 Power supply terminal (+3.3V) AVSS0 Ground terminal E signal input from the optical pick-up block F signal input from the optical pick-up block Tracking error signal input terminal Tracking error signal output terminal...
  • Page 31 HCD-NEZ31 Pin No. Pin Name Description TRST Not used Ground terminal Power supply terminal (+1.8V) IOVDD2 Power supply terminal (+3.3V) DOUT Digital audio signal output terminal Not used TEST Test terminal Normally: fixed at "L" TES1 Test terminal Normally: fixed at "L"...
  • Page 32 HCD-NEZ31 PANEL BOARD IC801 MB90803PF-G-115E1 (SYSTEM CONTROLLER) Pin No. Pin Name Description SEG32 Segment drive signal output to the liquid crystal display STK-ON Standby control signal output to the power amplifier O-CD-XRST System reset signal output to the CD DSP...
  • Page 33 HCD-NEZ31 Pin No. Pin Name Description O-POWER Power relay drive signal output terminal "H": on I-SUFFIX Model destination setting terminal I-RE-VOL Dial pulse input of the rotary encoder (for VOLUME control) I-MP3-REQ MP3 data request signal input from the CD DSP...

  • Page 34: Exploded Views

    HCD-NEZ31 SECTION 8 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark 0 are may have some difference from the original are seldom required for routine service.

  • Page 35: Mechanical Deck Section

    HCD-NEZ31 8-2. MECHANICAL DECK SECTION not supplied not supplied not supplied PANEL board section not supplied (WIRE200) not supplied (EPT500) FFC501 HEAD PHONE board Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-2103-436-1 LID ASSY, CASSETTE 4-933-134-11 SCREW (+PTPWH M2.6X8)

  • Page 36: Panel Board Section

    HCD-NEZ31 8-3. PANEL BOARD SECTION FFC803 PANEL board FFC804 D804, D805 LCD801 FFC805 FFC801 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 2-581-385-21 KNOB (VOL) D804 6-501-139-01 LED SELU2B10A-SLF62 (LCD BACK LIGHT) X-2149-351-1 PANEL ASSY, FRONT...

  • Page 37: Cabinet (Top) Section

    HCD-NEZ31 8-4. CABINET (TOP) SECTION not supplied S820 (including spindle motor (M401), sled motor (M402)) included in (sled motor (M402)) included in (spindle motor (M401)) S201 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark X-2103-437-1 LID ASSY, CD...

  • Page 38: Main Board Section

    HCD-NEZ31 8-5. MAIN BOARD SECTION not supplied AC board, MAIN board DC board section not supplied not supplied (SHIELD board) not supplied not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 0 208 A-1158-557-A MAIN BOARD, COMPLETE...

  • Page 39: Ac Board, Dc Board Section

    HCD-NEZ31 8-6. AC BOARD, DC BOARD SECTION not supplied (CONNECT board) DC board T902 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-1158-136-A DC BOARD, COMPLETE 2-633-205-01 INSULATED PLATE 2-586-961-21 HEAT SINK A-1158-562-A AC BOARD, COMPLETE...

  • Page 40: Electrical Parts List

    HCD-NEZ31 SECTION 9 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark 0 are parts list may be different from the parts are seldom required for routine service.
  • Page 41 HCD-NEZ31 CONNECT Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C264 1-162-964-11 CERAMIC CHIP 0.001uF R252 1-216-833-11 METAL CHIP 1/10W C265 1-107-826-11 CERAMIC CHIP 0.1uF R253 1-216-821-11 METAL CHIP 1/10W C266 1-162-915-11 CERAMIC CHIP 10PF 0.5PF...
  • Page 42 HCD-NEZ31 HEAD PHONE MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < CONNECTOR > < JACK > CN900 1-568-828-11 CONNECTOR, FFC 9P J500 1-785-448-21 JACK (PHONES) CN902 1-819-135-11 PIN, CONNECTOR 7P CN903 1-819-132-11 PIN, CONNECTOR 4P <...
  • Page 43 HCD-NEZ31 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C202 1-162-966-11 CERAMIC CHIP 0.0022uF 10% C357 1-164-360-11 CERAMIC CHIP 0.1uF C203 1-162-927-11 CERAMIC CHIP 100PF C358 1-130-483-00 MYLAR 0.01uF C204 1-104-665-11 ELECT 100uF C206 1-164-227-11 CERAMIC CHIP 0.022uF...
  • Page 44 HCD-NEZ31 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark FB306 1-216-864-11 SHORT CHIP R114 1-216-829-11 METAL CHIP 4.7K 1/10W FB317 1-216-864-11 SHORT CHIP R116 1-216-841-11 METAL CHIP 1/10W FB318 1-216-864-11 SHORT CHIP R117 1-216-825-11 METAL CHIP 2.2K...
  • Page 45 HCD-NEZ31 PANEL MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R230 1-216-793-11 METAL CHIP 1/10W R383 1-216-813-11 METAL CHIP 1/10W R231 1-216-821-11 METAL CHIP 1/10W R384 1-216-813-11 METAL CHIP 1/10W R232 1-216-821-11 METAL CHIP 1/10W...
  • Page 46 HCD-NEZ31 PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C818 1-126-518-11 ELECT 470uF < TRANSISTOR > C819 1-162-919-11 CERAMIC CHIP 22PF Q801 8-729-120-28 TRANSISTOR 2SC1623-L5L6 C820 1-164-315-11 CERAMIC CHIP 470PF Q802 8-729-037-13 TRANSISTOR KTA1271Y C821...
  • Page 47 HCD-NEZ31 PANEL SHIELD Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R829 1-216-833-11 METAL CHIP 1/10W S802 1-786-050-21 SWITCH, KEY BOARD (DSGX) R830 1-216-829-11 METAL CHIP 4.7K 1/10W S803 1-786-050-21 SWITCH, KEY BOARD (CD SYNC) R831...

  • Page 48: Revision History

    HCD-NEZ31 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision...

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