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HCD-V919AV SERVICE MANUAL E Model Chinese Model HCD-V919AV is the Amplifier, Video CD player, Tape Deck and Tuner section in MHC-V919AV. This stereo system is equipped with the Dolby B- Model Name Using Similar Mechanism HCD-V717 type noise reduction system and Dolby Pro Logic...
LINE WITH MARK ! 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 PUB- LISHED BY SONY.
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MODEL IDENTIFICATION IC502 OF VIDEO BOARD – Back Panel – IC502 of the VIDEO board consists of the former type and new PART No. type. The following table shows the differences between the two types. Only spare parts for the new type IC502 are supplied. Units using the former IC502 will not function when replaced with the new type without performing the following procedure.
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HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF 1 Remove the case. 3 pull-out the disc tray. 2 Turn the cam to the direction of arrow. NOTE FOR INSTALLATION (ROTARY ENCODER) Note: When attaching the Base unit, Insert the BU cam section A into the groove of BU cam.
SECTION 2 GENERAL LOCATION OF CONTROLS • Front view 1/u (POWER) button DISC 1 button and indicator DISC 2 button and indicator DISC 3 button and indicator DISC SKIP/EX-CHANGE button § button Disc tray Decoration #¢ § button (Deck B) Deck A 9, ( buttons and indicators !¡...
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#§ Display window #¶ PBC OFF indicator #• PBC indicator #§ #ª VIDEO CD indicator $º PLAY MODE, DOLBY NR, TUNER MEMORY button #¶ ^§ $¡ EDIT, DIRECTION button #• ^∞ $™ REPEAT, STEREO/MONO button #ª ^¢ $£ r REC button and indicator $º...
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• Rear view 1 2 3 S VIDEO OUT jack SYSTEM SELECT switch VIDEO OUT jack FM antenna terminal AM antenna terminals VOLTAGE SELECTOR switch SURROUND SPEAKER, CENTER terminals SURROUND SPEAKER, REAR terminals FRONT SPEAKER terminals SUPER WOOFER jack !¢ !£...
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This section is extracted from instruction manual. – 9 –...
SECTION 3 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. LOADING PANEL 4 loading panel 3 two claws 1 Turn the cam to the direction of arrow. 2 Pull-out the disc tray. FRONT PANEL 4 flat type wire (CN107) 4 flat type wire (CN106)
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6 three screws CASSETTE MECHANISM DECK (BVTP2.6 × 8) 7 mechanism deck 6 two screws (BVTP2.6 × 8) 1 two screws 4 Remove the cassette lids. (BVTT2 × 4) 8 two screws (BVTP2.6 × 8) 2 damper, oil 2 damper, oil 1 two screws (BVTT2 ×...
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DISC TRAY Note: When installing the Disc tray, pull around the flat type wire to (Perform after removing the front panel.) pass through the claw A and claw B , as shown in the figure. 3 flat type wire (8 core) 4 two claws 2 Pull-out the disc tray.
SECTION 4 TEST MODE [MC Cold Reset] [Change-over of MW 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 •...
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[Aging Mode] Operations during aging This mode can be used for checking the operations of the CD player • Operations are performed in the following sequence during ag- and tape deck. ing. • When problems occur: Aging stops. If currently aging the tape deck, the state when <CD player>...
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[VIDEO CD Color-bars Mode] On this mode, the data of the color-bars signal as a picture signal and the 1 kHz sine wave signal as a sound signal are output by the mechanism controller (IC502) for the video CD signal check. When measurement of the voltage and waveform on the VIDEO board, perform it in this mode.
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 demagne- record/playback heads pinch rollers tizer. erase head rubber belts 2.
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3. Mode: Playback (FWD) DECK B Tape Speed Adjustment Note: Start the Tape Speed adjustment as below after setting to the test test tape mode. P-4-A100 MAIN board oscilloscope (10 kHz, –10 dB) In the test mode, the tape speed is high during pressing the CN301 [HI-DUB] button.
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DECK B REC Bias Adjustment 4. Mode: Record Procedure: MD/VIDEO (AUDIO) IN INTRODUCTION 315 Hz, 50 mV (–23.8 dB) AF OSC When set to the test mode performed in Tape Speed Adjustment, blank tape when the tape is rewound after recording, the “REC memory mode” 600 Ω...
RF signal waveform CD SECTION VOLT/DIV: 200 mV Notes: TIME/DIV: 500 ns 1. CD block basically constructed to operate without adjustment. There- (with the 10: 1 probe fore, check each item in order given. in use) 2. Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwise indicated. 3.
VIDEO SECTION Frequency Adjustment Connection: frequency counter VIDEO board TP508 (27 MHz) – Procedure: 1. Connect the frequency counter to TP508 (27 MHz) on VIDEO board. 2. Turned power switch on. [FUNCTION] 3. Press the button to select the CD. 4.
HCD-V919AV 7-4. BLOCK DIAGRAM – MAIN Section (1/2) – (Page 33) • SIGNAL PATH REC-L (Page 28) J750 RV751 : CD PLAY MIC 2 ECHO LEVEL : TAPE PLAY J101 (2/2) : RECORD DIGITAL ECHO MD OUT : TUNER (FM/AM)
• Circuit Boards Location 7-7. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS TRANSFORMER board Note on Schematic Diagrams: Note on Printed Wiring Boards: • X : parts extracted from the component side. • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics •...
HCD-V919AV 7-9. SCHEMATIC DIAGRAM – BD Section – • See page 86 for Waveforms. • See page 90 and 91 for IC Block Diagrams. (Page 43) The components identified by mark ! or dotted line with mark ! are critical for safety.
HCD-V919AV 7-11. SCHEMATIC DIAGRAM – VIDEO Section (1/2) – • See page 91 for IC Block Diagram. (Page 39) (Page 62) (Page 45) • Voltages and waveforms are dc with respect to ground in *Note VIDEO CD play mode. When replacing IC502, refer to “IC502 of no mark : VIDEO CD play VIDEO board”...
HCD-V919AV 7-12. SCHEMATIC DIAGRAM – VIDEO Section (2/2) – • See page 86 to 88 for Waveforms. • See page 91 for IC Block Diagram. (Page 43) – 45 – – 46 –...
HCD-V919AV 7-14. SCHEMATIC DIAGRAM – CD MOTOR Section – • See page 92 for IC Block Diagrams. MAIN BOARD CN104 (Page 62) MAIN BOARD CN103 (Page 62) – 49 – – 50 –...
HCD-V919AV 7-16. SCHEMATIC DIAGRAM – TAPE DECK Section – • See page 92 for IC Block Diagram. MAIN BOARD CN106 (Page 60) The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.
HCD-V919AV 7-21. SCHEMATIC DIAGRAM – MAIN Section (2/4) – • See page 88 for Waveforms. (Page 60) (Page 43) (Page 60) (Page 50) (Page 50) (Page 60) • Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions.
HCD-V919AV 7-22. SCHEMATIC DIAGRAM – MAIN Section (3/4) – • See page 93 for IC Block Diagrams. (Page 59) (Page 59) (Page 65) (Page 65) (Page 65) (Page 62) (Page 85) • Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions.
HCD-V919AV • Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. 7-25. SCHEMATIC DIAGRAM – PANEL Section – • See page 89 for Waveforms. • See page 92 for IC Block Diagrams. no mark : FM ∗...
HCD-V919AV 7-27. SCHEMATIC DIAGRAM – DISPLAY Section – (Page 70) (Page 69) (Page 70) • Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM – 73 – – 74 –...
HCD-V919AV 7-31. SCHEMATIC DIAGRAM – POWER AMP Section – (Page 75) (Page 81) (Page 66) (Page 81) (Page 75) (Page 81) (Page 66) (Page 81) (Page 81) • Voltages and waveforms are dc with respect to ground The components identified by mark ! or dotted under no-signal (detuned) conditions.
HCD-V919AV 7-32. SCHEMATIC DIAGRAM – TRANSFORMER Section – • See page 83 for Printed Wiring Board. (POWER BOARD) • See page 83 for Printed Wiring Board. (TRANSFORMER BOARD) (Page 80) (Page 80) (Page 80) (Page 80) (Page (Page 80) • Voltages and waveforms are dc with respect to ground The components identified by mark ! or dotted under no-signal (detuned) conditions.
HCD-V919AV 7-35. SCHEMATIC DIAGRAM – SURROUND Section – (Page 63) (Page • Voltages and waveforms are dc with respect to ground The components identified by mark ! or dotted under no-signal (detuned) conditions. line with mark ! are critical for safety.
– MOTOR (TURN) Board – – PANEL Board – IC701 M54641L IC603 BA3833F-E2 RESET 18 RESET RESET REFERENCE REFFERENCE PREF 17 f01 POWER OUT2 INPUT CURRENT AMP. AMP. CONTROL LINE 16 f02 POWER OUT1 INPUT AMP. AMP. LINE 15 f03 BIAS 13 f Bias...
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– MAIN Board – IC201 LV1041M R BPF2 L BPF2 RECT RECT LOGIC LOGIC R BPF1 RECT RECT L BPF1 LOGIC LOGIC RT IN S DC OUT C DC OUT R DC OUT LT IN L DC OUT CONTROL DC CUT V REF V REF CONTROL...
7-36. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC501 µPD780016AYGF-014-3BA (SYSTEM CONTROLLER) Pin No. Pin Name Function LINE-MUTE Line muting on/off control signal output terminal “L”: muting on DBFB normal/high selection signal output to the M62442FP (IC101) DBFB-H/L “L”: DBFB high, “H”: DBFB low M62442-LATCH Serial data latch pulse output to the M62442FP (IC101) KEYCON-LATCH...
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Pin No. Pin Name Function COM-CLK Serial data transfer clock signal output terminal Not used (open) Power on/off control signal output for the CD and video CD section CD-POWER “H”: power on, “L”: standby CD-DATA Serial data output terminal Not used (open) CD-CLK Serial data transfer clock signal output terminal Not used (open) PL-CLK...
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Pin No. Pin Name Function ENC3 ENC2 Detection signal input from the disc tray address detect rotary encoder (S811) ENC1 Detection signal input from the disc tray open/close detect switch (S801) OUT-OPEN “L”: open, “H”: close High/normal speed selection signal output of the capstan motor (M1) CAP-M-H/L “L”: high speed, “H”: normal speed B-TRG...
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• VIDEO BOARD IC502 (CD MECHANISM CONTROLLER) Former type M30620MC-302FP New type M30620MC-305FP Pin No. Pin Name Function SENSE Internal status (SENSE) signal input from the CXD2545Q (IC101) SENSE CLK Sense serial data reading clock signal output to the CXD2545Q (IC101) DSP DATA Serial data output to the CXD2545Q (IC101) DSP LATCH...
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Pin No. Pin Name Function Not used (open) BUS XHOLD Hold signal input terminal Not used (fixed at “H”) 42, 43 Not used (open) SHIMUKE Destination setting terminal “L”: Chinese, “H”: English Vertical synchronized signal input from the MPEG video/audio decoder (IC505) “L” active BUS XWRL Not used (open) LO.BOOST...
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• VIDEO BOARD IC505 CL680T-D1 (MPEG VIDEO/AUDIO DECODER, VIDEO SIGNAL PROCESSOR) Pin No. Pin Name Function Not used (open) — Ground terminal CD-BCK CD decode bit clock signal (2.8224 MHz) input from the CXD2545Q (IC101) CD-DATA CD decode data input from the CXD2545Q (IC101) CD-LRCK CD decode L/R sampling clock signal (44.1 kHz) input from the CXD2545Q (IC101) CD-C2PO...
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Pin No. Pin Name Function RREF Fix the video signal output level control VREF Reference voltage (+1.235V) output terminal AVDD-DAC — Power supply terminal (+3.3V) (for D/A converter) C-OUT Chrominance video signal output terminal AGND-DAC — Ground terminal (for D/A converter) GCK (pin `⁄‚fi) selection terminal “L”: external clock, “H”: internal clock (fixed at “H”) CLK-SEL0 DA-XCLK (pin *§) selection (1) terminal Fixed at “H”...
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Pin No. Pin Name Function VDD3 — Power supply terminal (+3.3V) HSEL Command selection signal input from the CD mechanism controller (IC502) CDG-SDATA Not used (fixed at “L”) CDG-VFSY Not used (fixed at “L”) CDG-S0S1 Not used (fixed at “L”) 125 to 128 Not used (open) –...
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• PANEL BOARD IC601 TMP87CM74AF-6731 (FLUORESCENT INDICATOR TUBE DRIVE, LED DRIVE, KEY CONTROL) Pin No. Pin Name Function LED3 LED drive signal output terminal (for decoration LED) LED4 LED drive signal output terminal (for decoration LED) LED5 LED drive signal output terminal (DISC 3) LED6 LED drive signal output terminal (DISC 2) LED7...
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Pin No. Pin Name Function Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC603) SPEANA-1 (for low frequency) Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC603) SPEANA-2 (for low and middle frequency) Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC603) SPEANA-3 (for middle and high frequency) Spectrum analyzer drive signal input from the spectrum analyzer band-pass filter (IC603)
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• PANEL BOARD IC801 TMP87CH48DF-4825 (CSV CONTROL, LED DRIVE, KEY CONTROL) Pin No. Pin Name Function — Ground terminal X-OUT System clock output terminal (8 MHz) X-IN System clock input terminal (8 MHz) System reset signal input from the reset signal generator (IC951) “L”: reset RESET For several hundreds msec.
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Pin No. Pin Name Function 41 to 56 Not used (open) 57 to 60 — Ground terminal BPM LED-B LED drive signal output terminal (AUTO BPM) “L”: LED on BPM-LED-A LED drive signal output terminal (AUTO BPM) “L”: LED on BOMBER-LED LED drive signal output terminal (BEAT JAM) “L”: LED on ON/OFF-LED...
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 ! or dotted line with mark may have some difference from the original are seldom required for routine service.
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(2) CHASSIS SECTION not supplied not supplied (SP,MY) (IA) (SP,MY) (IA,TH,CH) T501 not supplied The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref.
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(6) BASE UNIT SECTION (BU-5BD24AL) M101 M102 The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark ! 301 8-820-020-02 OPTICAL PICK-UP KSS-213D/Q-NP...
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(7) TAPE MECHANISM DECK SECTION-1 TCM-230AWR1 TCM-230PWR1 * NOTE: Two types of parts which are not interchangeable are available for the Head deck (A) ASSY and Head deck (B) ASSY. When replacing the parts, refer to the following figure, and use the appropriate part Parts with “P”...
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(8) TAPE MECHANISM DECK SECTION-2 TCM-230AWR1 TCM-230PWR1 * NOTE: Two types of parts which are not interchangeable are available for the mechanical block assembly. When replacing the parts, refer to the following figure, and use the appropriate part. Parts with “P” mark: 230PWR1 Parts without “P”...
SECTION 9 AUDIO ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark ! or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service.