Page 1
HCD-VX33 SERVICE MANUAL E Model Tourist Model • HCD-VX33 is the tuner, deck, CD and amplifier section in MHC- VX33. Model Name Using Similar Mechanism CD Mechanism Type CDM58-K2BD37A Section Base Unit Name BU-K2BD37A Optical Pick-up Name KSM-213DAP Tape deck...
Page 2
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.
TABLE OF CONTENTS 1. SERVICE NOTE ······························································· 4 NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT 2. GENERAL ·········································································· 5 The laser diode in the optical pick-up block may suffer electrostatic 3. DISASSEMBY ·································································· 7 break-down because of the potential difference generated by the charged electrostatic load, etc.
SECTION 1 SERVICE NOTE MODEL IDENTIFICATION — BACK PANEL — PARTS No. 2 Panel board MODEL PARTS No. E, EA, HK, MY, SP, TW, JE models 4-224-547-3s TH model 4-224-547-5s IA model 4-226-245-4s • Abbreviation 1 Cut the fourteen melted-connection points with a cutting plier. :Saudi Arabia model :Malaysia model :Singapore model...
SECTION 2 GENERAL 1 2 3 4 5 – . button MD/VIDEO button and indicator x button TAPE A/B button and indicator gG/SELECT button RETURN button S button PREV button NEXT button > + button CD button and indicator PLAY MODE button TUNER/BAND button and indicator REPEAT button GROOVE button and indicator...
Page 6
This section is extracted from instruction manual. Step 2: Setting the Press . or > repeatedly to set the hour. time Press ENTER. The minute indication flashes. You must set the time before using the timer functions. Press . or > repeatedly to set the minute.
SECTION 3 DISASSEMBY Note : Follow the disassembly procedure in the numerical order given. 3-1. UPPER CASE (TOP) 9 Four screws (+BVTP 3 × 10) Upper case (Top) 5 Two screws (Case) 7 Two screws (+BVTP 3 × 10) Case (L) 6 Screw (Case) Case (R) 3 Two screws...
Page 8
3-3. FRONT PANEL SECTION CD mechanism deck (CDM58) q; Two screws (+BVTP 3 × 10) qd Video Board 4 Screw (+BVTP 3 × 10) 8 Flat type wire 9 Flat type wire (CN502) (CN501) qs Two screws (+BVTP 2.6 × 8) 1 Flat type wire(CN304) 5 Screw(+BVTP 3 ×...
Page 9
3-5. PANEL BOARD 8 Six claws 4 Ring (Vol) 9 Panel board 5 Spring (Jog) 3 Bracket (Volume) 2 Hexagon nut 7 Cut the fourteen melted-connection points with a cutting plier. 1 Knob (Volume) Note: When attching the panel board, refer to "Service Note"...
Page 10
3-7. MAIN BOARD AND AMP BOARD 4 Three screws (+BVTP 3 × 8) 7 Heat sink 6 Two screws (+BVTP 3 × 8) 5 Power AMP board 3 Two screws (+BVTP 3 × 16) 2 Main board 1 Two screws (+BVTP 3 × 8) 3-8.
Page 11
3-9. BASE UNIT 8 Two insulators Base unit 7 Two insulators 5 Four screws (+PTPWH 2.6) 4 BD board 2 Flat type wire (CN102) 1 Flat type wire (CN101) 3 Screw (+BVTT 2.6 × 8) 3-10. DRIVER BOARD, MOTOR BOARD AND ADDRESS SENSOR BOARD 9 Screw (+PTPWH 2.6 ×...
SECTION 4 TEST MODE [MC Cold Reset] [Change-over of AM Tuner Step between 9 kHz and • The cold reset clears all data including preset data stored in the 10 kHz] RAM to initial conditions. Execute this mode when returning •...
Page 13
[MC Test Mode] • This mode is used to check operations of the respective sections of Amplifier, Tuner, CD and Tape. Procedure: Press the three buttons of x , ENTER and DISC 3 simultaneously. A message “TEST MODE” appears on the FL display tube. When f (CURSOR UP) button is pressed, GEQ increases to its maximum and a message “GEQ AMX”...
Page 14
[Tape Aging Mode] 2. Tape Deck Section This mode can be used for operation check of tape deck section. • The sequence during the aging mode is following as below. Tape deck section work in parallel. • If an error occurred, stop display that step. •...
Page 15
[CD Aging Mode] [CD Servo ON/OFF Mode] Procedure: Procedure: Short SL501 by soldering. Short SL502 on the VIDEO board by soldering. Turn on the main power. Set a disc on the DISC1 tray. Select Turn on the main power. Set a disc on the DISC1 tray. Select Press the hH button to play back CD.
SECTION 5 SECTION 6 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. erase head rubber belts 2.
Page 17
2. Turn the adjustment screw and check output peaks. If the peaks DECK B Tape Speed Adjustment do not match for L-CH and R-CH, turn the adjustment screw Note: Start the Tape Speed adjustment as below after setting to the test so that outputs match within 1dB of peak.
Page 18
DECK B REC Bias Adjustment 4. Mode: Record Procedure: MD/VIDEO (AUDIO) IN INTRODUCTION 315 Hz, 50 mV (–23.8 dB) When set to the test mode performed in Tape Speed Adjustment, AF OSC blank tape when the tape is rewound after recording, the “REC memory mode” 600 Ω...
Page 19
FM Tuned Level Adjustment CD SECTION FM RF SSG Note : 75 Ω coaxial 1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given. 2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated. 3. Use an oscilloscope with more than 10MΩ impedance. 4.
Page 20
Note : Clear RF signal waveform means that the shape “ ◊ ” can be clearly Adjustment Location: distinguished at the center of the waveform. [BD BOARD] (Conductor Side) RF signal waveform VOLT/DIV : 200mV TIME/DIV : 500ns level : 1.45 ± 0.3Vp-p TP (RF) TP (VC) E-F Balance (1 Track jump) Check...
Page 21
VIDEO SECTION Frequency Adjustment Connection: frequency counter VIDEO board (27 MHz) Procedure: 1. Connect the frequency counter to check point of the VIDEO board. 2. Turned power switch on. 3. Press the CD button to select the CD. 4. Adjust CT503 on the VIDEO board so that the frequency counter reading 27.0 MHz ±...
HCD-VX33 SECTION 7 DIAGRAMS THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) Note on Schematic Diagram: Note on Printed Wiring Boards: • X : parts extracted from the component side.
HCD-VX33 7-2. BLOCK DIAGRAMS TUNER/CD SECTION EXCEPT JE MODEL AM/FM IF MPX TM601 LPF601 FE601 Q602 IC601 CF601 CF602 RF IF BUFFER L-CH • RCH is omitted ANT IN IF OUT FM IF L OUT Q611 • Signal Path FM 75Ω...
Page 27
HCD-VX33 VIDEO CD SECTION DEVIDE RST SECTION (Page 25) CD DATA/CD BCK/CD LRCK/C2PO SECTION (Page 25) CD MECHA CONT Y AMP VIDEO AMP IC502(2/2) IC303 IC303 RESOLUTION VOUT Y IN Y OUT1 Y OUT2 J301 C AMP IC302 S VIDEO...
HCD-VX33 7-4. SCHEMATIC DIAGRAM BD SECTION • See page 24 for Waveforms. • See page 50 for IC Block Diagrams. The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.
HCD-VX33 • See page 24 for Waveforms. 7-7. SCHEMATIC DIAGRAM MAIN SECTION (2/3) • See page 46 for IC Pin Function Description. • See page 52 for IC Block Diagrams. VIDEO BOARD (PAGE 43)
HCD-VX33 7-10. SCHEMATIC DIAGRAM POWER AMP SECTION The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.
HCD-VX33 7-12. SCHEMATIC DIAGRAM PANEL SECTION • See page 24 for Waveforms. • See page 47 for IC Pin Function Description. PIN FUNCTION 0.9 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.6 0.5 0.4...
HCD-VX33 7-18. SCHEMATIC DIAGRAM VIDEO CD SECTION (1/2) • See page 24 for Waveforms. • See page 48 for IC Pin Function Description. • See page 53 for IC Block Diagrams. PIN FUNCTION...
HCD-VX33 • See page 24 for Waveforms. 7-19. SCHEMATIC DIAGRAM VIDEO CD SECTION (2/2) • See page 48 for IC Pin Function Description. • See page 53 for IC Block Diagrams.
7-21. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC401 M30622MAA-A59 (MASTER CONTROL) Pin No. Pin Name Description Pin No. Pin Name Description SURROUND 1 Not used. Not used. SURROUND 2 Not used. Not used. SURROUND 3 Not used. Not used. 498-DATA Data signal output for IC101 (M61504FP) Not used.
Page 47
• PANEL BOARD IC601 TMP88CS77F-1A68 (DISPLAY CONTROL) Pin No. Pin Name Description VOLUME A VOLUME A signal input. VOLUME B VOLUME B signal input. HEADPHONE Head phone detect signal input. H=ON, L=OFF Not used. TUNER TUNER LED driver output.(high active) CD LED driver output.(high active) TAPE A/B TAPE A/B LED driver output.(high active)
Page 48
VIDEO CD BOARD IC502 M30624MCA-A34FP (CD MECHANISM CONTROLLER) Pin No. Pin Name Description SENSE Internal status (SENSE) signal input from the CXD3008Q (IC101) SENSE CLK Sense serial data reading clock signal output to the CXD3008Q (IC101) RESOLUTION Y resolution output CHROMA LEVEL Chroma level output DSP CLK...
Page 49
Pin No. Pin Name Description OUTSW Disc detection (load out) switch input terminal Not used (fixed at “H”) MODEL1 Destination setting terminal (fixed at “L”) MODEL2 Destination setting terminal (fixed at “L”) TBLL — Not used (open) TBLR — Not used (open) 57 to 59 ENC1 to ENC3 —...
SECTION 8 EXPLODED VIEWS NOTE: • -XX, -X mean standardized parts, so they may • Abbreviation The components identified by mark 0 or have some differences from the original one. : Saudi Arabia model dotted line with mark 0 are critical for safety. •...
8-4. TAPE MECHANISM DECK SECTION (TCM-230PWR11) (1/2) Note: Two different types of tape mechanism are used depending on models. They maintain compatibility as an entire mechanism even though there are some different parts are used. HP101 HRPE101 Ref. No. Part No. Description Remarks Ref.
ADDRESS SENSOR SECTION 9 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • RESISTORS • Abbreviation parts list may be different from the parts All resistors are in ohms. : Saudi Arabia model specified in the diagrams or the components METAL: metal-film resistor : Malaysia model used on the set.
Need help?
Do you have a question about the HCD-VX33 and is the answer not in the manual?
Questions and answers