Service Manual
Page 1
... watts per channel at 6 Ω, 1 kHz, 10% THD) SPECIFICATIONS Inputs AUDIO IN (stereo mini jack): Sensitivity 800 mV, impedance 22 kilohms Outputs PHONES (stereo mini jack): Accepts headphones with 9 kHz tuning interval) Intermediate frequency: 450 kHz COMPACT DISC RECEIVER 9-889-053-01 2008C05-1 © 2008.03 Sony Corporation Audio Business Group Published by Sony Techno Create Corporation speakers): HCD-EC78P: US and Canadian models Approx. 5.8 kg HCD-EC78P: UK model Approx. 6.1 kg HCD-EC68P Approx. 4.7 kg AM tuner section: Tuning range...
... watts per channel at 6 Ω, 1 kHz, 10% THD) SPECIFICATIONS Inputs AUDIO IN (stereo mini jack): Sensitivity 800 mV, impedance 22 kilohms Outputs PHONES (stereo mini jack): Accepts headphones with 9 kHz tuning interval) Intermediate frequency: 450 kHz COMPACT DISC RECEIVER 9-889-053-01 2008C05-1 © 2008.03 Sony Corporation Audio Business Group Published by Sony Techno Create Corporation speakers): HCD-EC78P: US and Canadian models Approx. 5.8 kg HCD-EC78P: UK model Approx. 6.1 kg HCD-EC68P Approx. 4.7 kg AM tuner section: Tuning range...
Service Manual
Page 2
... is 0.75 V, so analog meters must not exceed 0.5 mA (500 microamperes.). Nearly all battery operated digital multimeters that have an accurate low-voltage scale. A) To Exposed Metal Parts on the conductor when soldering or unsoldering. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. Flexible Circuit Board Repairing • Keep the temperature...
... is 0.75 V, so analog meters must not exceed 0.5 mA (500 microamperes.). Nearly all battery operated digital multimeters that have an accurate low-voltage scale. A) To Exposed Metal Parts on the conductor when soldering or unsoldering. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. Flexible Circuit Board Repairing • Keep the temperature...
Service Manual
Page 3
... turning power on IC pins, etc. • Usable with care. The message "UNLOCKED" is displayed and the disc tray is not released by the charged electrostatic load, etc. Base Unit (EC78P: UK 14 3-10. 1 CD Mechanism Block (EC68P/EC78P: US, Canadian 15 3-11. Schematic Diagram - Printed Wiring Board - ELECTRICAL PARTS LIST 53 HCD-EC68P/EC78P SECTION 1 SERVICING NOTES NOTES ON HANDLING THE OPTICAL...
... turning power on IC pins, etc. • Usable with care. The message "UNLOCKED" is displayed and the disc tray is not released by the charged electrostatic load, etc. Base Unit (EC78P: UK 14 3-10. 1 CD Mechanism Block (EC68P/EC78P: US, Canadian 15 3-11. Schematic Diagram - Printed Wiring Board - ELECTRICAL PARTS LIST 53 HCD-EC68P/EC78P SECTION 1 SERVICING NOTES NOTES ON HANDLING THE OPTICAL...
Service Manual
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... a weak FM stereo station Press FM MODE repeatedly until "MONO" appears Using optional audio components To connect an optional headphones Connect headphones to the PHONES jack on the display information • Characters that has video output function, connect the adaptor directly to operate. 1) You cannot set mode. Notes on the unit. HCD-EC68P/EC78P: US and Canadian models: Basic Operations Adjusting the sound To adjust the volume Press VOLUME +/− (or turn on the disc tray. EQ...
... a weak FM stereo station Press FM MODE repeatedly until "MONO" appears Using optional audio components To connect an optional headphones Connect headphones to the PHONES jack on the display information • Characters that has video output function, connect the adaptor directly to operate. 1) You cannot set mode. Notes on the unit. HCD-EC68P/EC78P: US and Canadian models: Basic Operations Adjusting the sound To adjust the volume Press VOLUME +/− (or turn on the disc tray. EQ...
Service Manual
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... up a preset radio station, press TUNING MODE repeatedly until "PRESET" appears, and then press +/− (or TUNING +/− on the unit) repeatedly to select the desired preset number. To reset the system to factory settings If the system still does not operate properly, reset the system to adjust the volume. Use buttons on the unit to reset the unit to its factory default settings. 1 Disconnect and reconnect the power cord, and then turn on...
... up a preset radio station, press TUNING MODE repeatedly until "PRESET" appears, and then press +/− (or TUNING +/− on the unit) repeatedly to select the desired preset number. To reset the system to factory settings If the system still does not operate properly, reset the system to adjust the volume. Use buttons on the unit to reset the unit to its factory default settings. 1 Disconnect and reconnect the power cord, and then turn on...
Service Manual
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HCD-EC68P/EC78P HCD-EC78P: UK model: Basic Operations Adjusting the sound To adjust the volume Press VOLUME +/− (or turn on the system. 2 Select the clock set mode. Press TUNING MODE repeatedly until "AUTO" appears. 3 Tune in , and then "TUNED" and "ST" (for stereo programs) appear. Scanning stops automatically when a station is tuned in the desired station. To connect a DIGITAL MEDIA PORT adaptor Connect the DIGITAL MEDIA PORT adaptor to the TV. • For details about six...
HCD-EC68P/EC78P HCD-EC78P: UK model: Basic Operations Adjusting the sound To adjust the volume Press VOLUME +/− (or turn on the system. 2 Select the clock set mode. Press TUNING MODE repeatedly until "AUTO" appears. 3 Tune in , and then "TUNED" and "ST" (for stereo programs) appear. Scanning stops automatically when a station is tuned in the desired station. To connect a DIGITAL MEDIA PORT adaptor Connect the DIGITAL MEDIA PORT adaptor to the TV. • For details about six...
Service Manual
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... the power cord plugged in? CD/MP3 player The sound skips, or the disc will not play. Tuner Severe hum or noise, or stations cannot be all right, reconnect the power cord, and turn on the system. Use buttons on the unit to reset the unit to its factory default settings. 1 Disconnect and reconnect the power cord, and then turn on the system. 2 Press , FUNCTION , and at the preset time, the Play...
... the power cord plugged in? CD/MP3 player The sound skips, or the disc will not play. Tuner Severe hum or noise, or stations cannot be all right, reconnect the power cord, and turn on the system. Use buttons on the unit to reset the unit to its factory default settings. 1 Disconnect and reconnect the power cord, and then turn on the system. 2 Press , FUNCTION , and at the preset time, the Play...
Service Manual
Page 18
... the optical pick-up. Press three buttons of [PLAY MODE/TUNING MODE], [TUNING + M L], and [DISPLAY] simultaneously. 3. Use this mode, press three buttons of the liquid crystal display are all trays. 3. After blink "STANDBY", "LOCK" is displayed, disconnect the AC plug. Press the [I /1] button. 5. After pressing the [DISPLAY] button, while pressing the [TUNING + M L] button, press the [I /1] button to turn the power on ), press the [FUNCTION] button. 2. CD SHIP AND COLD RESET Procedure: 1. After blink "STANDBY", "RESET" is displayed, disconnect the AC plug. Press...
... the optical pick-up. Press three buttons of [PLAY MODE/TUNING MODE], [TUNING + M L], and [DISPLAY] simultaneously. 3. Use this mode, press three buttons of the liquid crystal display are all trays. 3. After blink "STANDBY", "LOCK" is displayed, disconnect the AC plug. Press the [I /1] button. 5. After pressing the [DISPLAY] button, while pressing the [TUNING + M L] button, press the [I /1] button to turn the power on ), press the [FUNCTION] button. 2. CD SHIP AND COLD RESET Procedure: 1. After blink "STANDBY", "RESET" is displayed, disconnect the AC plug. Press...
Service Manual
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... Error Rate Mode as described below . HCD-EC68P/EC78P [CD SERVO TEST MODE] This mode can check the servo system operations of the optical pick-up to the left . [FUNCTION]: Use this key to select CD function. 3. Note1: Do not enter the [CD SERVO TEST MODE] while any other test mode is pressed, the screen advances to the next menu or to move the cursor to turn the power on. 2. Also, use...
... Error Rate Mode as described below . HCD-EC68P/EC78P [CD SERVO TEST MODE] This mode can check the servo system operations of the optical pick-up to the left . [FUNCTION]: Use this key to select CD function. 3. Note1: Do not enter the [CD SERVO TEST MODE] while any other test mode is pressed, the screen advances to the next menu or to move the cursor to turn the power on. 2. Also, use...
Service Manual
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...fied period of time. 06: The tracking servo cannot lock-in this mode increments the number after "M". HCD-EC68P/EC78P CD SERVICE MODE This mode can turn the optical pick-up laser power on and off. Other than FF: The error has occurred during the initialization operation. 3 It indicates the processing during which the trouble has occurred. 01: The disc EJECT processing is in...
...fied period of time. 06: The tracking servo cannot lock-in this mode increments the number after "M". HCD-EC68P/EC78P CD SERVICE MODE This mode can turn the optical pick-up laser power on and off. Other than FF: The error has occurred during the initialization operation. 3 It indicates the processing during which the trouble has occurred. 01: The disc EJECT processing is in...
Service Manual
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... gain setting changes whenever the button is pressed. "RW": Fix to select CD function 3. Because the numbers of [CD N], [FUNCTION], and [DIS- CD FACTORY MODE Note1: Do not enter the [CD FACTORY MODE] while any other testmode is being processed when the trouble has occurred. "-": No gain fixation. MANUAL SEARCH operation is in progress. 4 It indicates the operation that is in progress. 0B: The PLAY - HCD-EC68P/EC78P...
... gain setting changes whenever the button is pressed. "RW": Fix to select CD function 3. Because the numbers of [CD N], [FUNCTION], and [DIS- CD FACTORY MODE Note1: Do not enter the [CD FACTORY MODE] while any other testmode is being processed when the trouble has occurred. "-": No gain fixation. MANUAL SEARCH operation is in progress. 4 It indicates the operation that is in progress. 0B: The PLAY - HCD-EC68P/EC78P...
Service Manual
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... neutral detergent when the signal level is as possible (8dBuV) JACK board PHONES jack (J492) level: 1.2 ± 0.3 Vp-p digital voltmeter MAIN board 100 k Ω IC801 pin XL (TUNER VT) Checking Location: - Use an oscilloscope with the following checks. 5. Procedure : 1. Press the [I/1] button to turn the power ON, and press the [Z] button to operate without adjustment. 2. CD Block is replaced. Use YEDS-18 disc (3-702-101-01) unless...
... neutral detergent when the signal level is as possible (8dBuV) JACK board PHONES jack (J492) level: 1.2 ± 0.3 Vp-p digital voltmeter MAIN board 100 k Ω IC801 pin XL (TUNER VT) Checking Location: - Use an oscilloscope with the following checks. 5. Procedure : 1. Press the [I/1] button to turn the power ON, and press the [Z] button to operate without adjustment. 2. CD Block is replaced. Use YEDS-18 disc (3-702-101-01) unless...
Service Manual
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... use 75 ohm "coaxial cable" to 98 MHz. 2. The stop of automatic scanning means "The station signal is 75 ohm. 3. Adjustment Location: MAIN board (See page 24) FM DETECTOR ADJUSTMENT Setting: FUNCTION: FM FM RF signal generator MAIN board ANTENNA CN801 pin MAIN board IC801 pin RT (TUNER OUT L-ch) level meter Carrier frequency: 98MHz Modulation: deviation by FM 75 kHz Output level: 60 dBuV set . Turn the power on level meter...
... use 75 ohm "coaxial cable" to 98 MHz. 2. The stop of automatic scanning means "The station signal is 75 ohm. 3. Adjustment Location: MAIN board (See page 24) FM DETECTOR ADJUSTMENT Setting: FUNCTION: FM FM RF signal generator MAIN board ANTENNA CN801 pin MAIN board IC801 pin RT (TUNER OUT L-ch) level meter Carrier frequency: 98MHz Modulation: deviation by FM 75 kHz Output level: 60 dBuV set . Turn the power on level meter...
Service Manual
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... L-ch. • SIGNAL PATH : FM : CD PLAY : AUDIO IN : DMPORT • Abbreviation AUS : Australian CND : Canadian PT003 (EC68P) PT004 (EC78P) MAIN POWER TRANSFORMER RY001 (EC68P: US/EC78P) RY002 (EC68P: AUS) PT001 (EC68P: US/EC78P) PT002 (EC68P: AUS) SUB POWER TRANSFORMER RELAY DRIVE Q619 (AC IN) HCD-EC68P/EC78P 26 26 IMPEDANCE USE 8Ω TB601 + -L + -R SPEAKER HIGH FREQ. A TUNER-L B CD-L J491 AUDIO IN R-CH INPUT SELECTOR, ELECTRICAL VOLUME IC602 4 TUNER-L OUT-L 19...
... L-ch. • SIGNAL PATH : FM : CD PLAY : AUDIO IN : DMPORT • Abbreviation AUS : Australian CND : Canadian PT003 (EC68P) PT004 (EC78P) MAIN POWER TRANSFORMER RY001 (EC68P: US/EC78P) RY002 (EC68P: AUS) PT001 (EC68P: US/EC78P) PT002 (EC68P: AUS) SUB POWER TRANSFORMER RELAY DRIVE Q619 (AC IN) HCD-EC68P/EC78P 26 26 IMPEDANCE USE 8Ω TB601 + -L + -R SPEAKER HIGH FREQ. A TUNER-L B CD-L J491 AUDIO IN R-CH INPUT SELECTOR, ELECTRICAL VOLUME IC602 4 TUNER-L OUT-L 19...
Service Manual
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... PLAY i : AUDIO IN g : DMPORT • Abbreviation AUS : Australian model CND : Canadian model • Circuit Boards Location PANEL board KEY POWER board MAIN board HCD-EC68P/EC78P HI AMP board (EC78P) LOW AMP board KEY CD board JACK board DMP board PT board CD board REG board MOTOR board (EXCEPT EC78P: UK) HCD-EC68P/EC78P 27 27 THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS...
... PLAY i : AUDIO IN g : DMPORT • Abbreviation AUS : Australian model CND : Canadian model • Circuit Boards Location PANEL board KEY POWER board MAIN board HCD-EC68P/EC78P HI AMP board (EC78P) LOW AMP board KEY CD board JACK board DMP board PT board CD board REG board MOTOR board (EXCEPT EC78P: UK) HCD-EC68P/EC78P 27 27 THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS...
Service Manual
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... 4700p 10 10 PROTECT D614 MA2J1110GLS0 2.9 O-POWER R667 47k R666 1k C630 47 10V AMP-R AMP-L + + + + (Page 35) H LOW F AMP BOARD CN102 CN603 5P IN-R 1 A-GND 2 IN-L 3 AMP-ON 4 PROTECT 5 TP615 TP617 TP618 TP619 C700 1000p C699 1000p AMP-R AMP-L G LOW AMP BOARD CN104 G (Page 35) PA-GND 1 OUT-R 2 +VH 3 -VH 4 OUT-L 5 CN633 5P (EC78P) TB602 SPEAKER LOW FREQ. H IMPEDANCE USE 8Ω R SPEAKER L IMPEDANCE USE 6Ω (EC68P) TP621 TP622 TP623...
... 4700p 10 10 PROTECT D614 MA2J1110GLS0 2.9 O-POWER R667 47k R666 1k C630 47 10V AMP-R AMP-L + + + + (Page 35) H LOW F AMP BOARD CN102 CN603 5P IN-R 1 A-GND 2 IN-L 3 AMP-ON 4 PROTECT 5 TP615 TP617 TP618 TP619 C700 1000p C699 1000p AMP-R AMP-L G LOW AMP BOARD CN104 G (Page 35) PA-GND 1 OUT-R 2 +VH 3 -VH 4 OUT-L 5 CN633 5P (EC78P) TB602 SPEAKER LOW FREQ. H IMPEDANCE USE 8Ω R SPEAKER L IMPEDANCE USE 6Ω (EC68P) TP621 TP622 TP623...
Service Manual
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...INPUT SELECTOR INVERTER VOLUME INPUT GAIN TREBLE/ BASS HCD-EC68P/EC78P VCC OUT GND INV STBY VREF OUT2 RNF OUT1 VM VCC FIN GND RIN 5 VOUT 4 NC IC401 BA5826SFP-E2 VO1(-) 1 D.BUFF VO1(+) 2 D.BUFF IN1 3 LEVEL SHIFT RESET 4 THERMAL SHUT-DOWN REGULATOR BIAS TRAP LEVEL...FM OSC OSC BUFFER AM OSC LOW-PASS FILTER P-DET 9 IF ... UNLOCK DETECTOR POWER ON RESET PHASE DETECTOR ...HCD-EC68P/EC78P • IC Block Diagrams - PANEL Board - IC303 BA6956AN TSD CONTROL LOGIC 1 2 3 4 5 6 7 8 9 42 IC201 TK63115SCL-G@GT VIN 1 GND 2 VCONT 3 THERMAL & OVER CURRENT PROTECTION VOLTAGE -
...INPUT SELECTOR INVERTER VOLUME INPUT GAIN TREBLE/ BASS HCD-EC68P/EC78P VCC OUT GND INV STBY VREF OUT2 RNF OUT1 VM VCC FIN GND RIN 5 VOUT 4 NC IC401 BA5826SFP-E2 VO1(-) 1 D.BUFF VO1(+) 2 D.BUFF IN1 3 LEVEL SHIFT RESET 4 THERMAL SHUT-DOWN REGULATOR BIAS TRAP LEVEL...FM OSC OSC BUFFER AM OSC LOW-PASS FILTER P-DET 9 IF ... UNLOCK DETECTOR POWER ON RESET PHASE DETECTOR ...HCD-EC68P/EC78P • IC Block Diagrams - PANEL Board - IC303 BA6956AN TSD CONTROL LOGIC 1 2 3 4 5 6 7 8 9 42 IC201 TK63115SCL-G@GT VIN 1 GND 2 VCONT 3 THERMAL & OVER CURRENT PROTECTION VOLTAGE -
Service Manual
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... signal output terminal Not used 47 AoUT2 (PO5) O Audio data output terminal Not used 48 PIO0 O Request signal output to the system controller 55 SBOK/FOK O Not used 56 IPF O Not used 57 SFSY/LOCK O Not used 58 ZDET O Zero detection signal output terminal Not used 59 GPIN I Microcomputer interface mode selection signal input terminal Fixed at "H" in this set 43 Ground terminal 15 VCOi I /O Description 1 AVSS3 - HCD-EC68P/EC78P • IC Pin Function...
... signal output terminal Not used 47 AoUT2 (PO5) O Audio data output terminal Not used 48 PIO0 O Request signal output to the system controller 55 SBOK/FOK O Not used 56 IPF O Not used 57 SFSY/LOCK O Not used 58 ZDET O Zero detection signal output terminal Not used 59 GPIN I Microcomputer interface mode selection signal input terminal Fixed at "H" in this set 43 Ground terminal 15 VCOi I /O Description 1 AVSS3 - HCD-EC68P/EC78P • IC Pin Function...
Service Manual
Page 44
... level output terminal I RF signal input terminal I RF ripple signal input terminal O EFM slice level output terminal O Reference voltage (+1.65V) output terminal O External resistor connection terminal O Reference voltage (+1.65V) output terminal for automatic power control circuit O Low-pass filter terminal for PLL loop filter I Light amount monitor input from the laser diode of optical pick-up block 44 Power supply terminal (+3.3 V) O Phase error margin signal between EFM signal and PLCK signal output...
... level output terminal I RF signal input terminal I RF ripple signal input terminal O EFM slice level output terminal O Reference voltage (+1.65V) output terminal O External resistor connection terminal O Reference voltage (+1.65V) output terminal for automatic power control circuit O Low-pass filter terminal for PLL loop filter I Light amount monitor input from the laser diode of optical pick-up block 44 Power supply terminal (+3.3 V) O Phase error margin signal between EFM signal and PLCK signal output...
Service Manual
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... I Disc stocking detection switch input from the CD mechanism deck (EC78P: UK model) 23 O-DR-MUTE O Muting signal output to the motor/coil driver 24 I-REQ I Request signal input from the DMPORT connector 30 I-USB-DO/ I-DMP-5V-DET I /O-I2C-CLK O Serial data transfer clock signal output to the electrical volume 51 to 53 MD2 to the DMPORT connector 32 AVCC - HCD-EC68P/EC78P PANEL BOARD...
... I Disc stocking detection switch input from the CD mechanism deck (EC78P: UK model) 23 O-DR-MUTE O Muting signal output to the motor/coil driver 24 I-REQ I Request signal input from the DMPORT connector 30 I-USB-DO/ I-DMP-5V-DET I /O-I2C-CLK O Serial data transfer clock signal output to the electrical volume 51 to 53 MD2 to the DMPORT connector 32 AVCC - HCD-EC68P/EC78P PANEL BOARD...