SONY HCD DR8AV, HCD W900AV Service Manual

HCD-DR8AV/W900AV

SERVICE MANUAL

Ver 1.1 2003. 05

HCD-DR8AV/W900A V is the tuner , deck, CD and amplifier section in LBT-DR8AV/W900AV.

Photo: HCD-DR8AV

Model Name Using Similar Mechanism

Section

Tape deck

Section

CD Mechanism Type CDM37M-5BD32L Base Unit Name BU-5BD32L Optical Pick-up Name KSS-213D/Q-N Model Name Using Similar Mechanism NEW Tape Transport Mechanism T ype TCM-230AWR2/230PWR2

US Model

Canadian Model

HCD-W900AV

E Model

Australian Model

HCD-DR8AV

HCD-DR4/DR5/DR6/DR440/ W300/W5000/XB500

Amplifier section

LBT-W900AV

Front Speaker: Continuous RMS power output (Reference)

100 + 100W (8 Ω at 1 kHz, 10% THD)

Total harmonics distortion Less than 0.07%

(8 Ω at 1 kHz, 50W) Center Speaker: Continuous RMS power output (Reference)

45W

(8 Ω at 1 kHz, 10% THD) Rear Speaker: Continuous RMS power output (Reference)

40 + 40W

(8 Ω at 1 kHz, 10% THD)

LBT-DR8AV

Front Speaker: The following measured at AC 120/220/240V, 50Hz DIN power output (Rated) 130 + 130W

(6 Ω at 1 kHz, DIN) Continuous RMS power output (Reference)

160 +160W

(6 Ω at 1 kHz, 10% THD) Center Speaker: DIN power output (Rated) 30W

(8 Ω at 1 kHz, DIN) Continuous RMS power output (Reference)

40W

(8 Ω at 1 kHz, 10% THD)

SPECIFICATIONS

Rear Speaker: DIN power output (Rated) 30 + 30W

(8 Ω at 1 kHz, DIN)

Continuous RMS power output (Reference)

40 + 40W (8 Ω at 1 kHz, 10%

THD) Inputs PHONO IN (phono jacks): sensitivity 3mV,

impedance 47k Ω MIX MIC (phone jack): sensitivity 1mV,

impedance 10k Ω VIDEO1 IN (phono jacks): sensitivity 250mV,

impedance 47k Ω VIDEO2 IN (phono jacks): sensitivity 250mV,

impedance 47k Ω MD IN (phono jacks): sensitivity 450mV,

impedance 47k Ω (LBT-DR8AV/W900AV) DVD IN (phono jacks): sensitivity 450mV,

impedance 47kΩ

Outputs PHONES (stereo phone jack):

accepts headphones of 8

Ω or more VIDEO OUT (phono jack): voltage 250mV,

impedance 1k Ω

COMPACT DISC DECK RECEIVER

MD OUT (phono jacks): voltage 250mV, impedance

1k Ω

WOOFER OUT (phono jack):

voltage 1V, impedance

1k Ω FRONT SPEAKER: (LBT-W900AV) accepts impedance of 8 to

16 Ω (LBT-DR8AV) accepts impedance of 6 to

16 Ω CENTER SPEAKER: accepts impedance of 8 to

16 Ω REAR SPEAKER: accepts impedance of 8 to

16 Ω

Video section

Inputs VIDEO1 IN (phono jacks): 1Vp-p, 75 Ω VIDEO2 IN (phono jacks): 1Vp-p, 75 Ω Output VIDEO OUT (phono jack): 1Vp-p, 75 Ω

— Continued on next page —

9-928-902-12

Sony Corporation

Home Audio Company Published by Sony Engineering Corporation

CD player section

System Compact disc and digital audio system Laser Semiconductor laser

(λ=780nm) Emission duration: continuous

Laser output Max. 44.6µW*

* This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical

Pick-up Block with 7 mm aperture. Wavelength 780 – 790 nm Frequency response 2Hz – 20kHz (±0.5dB) Signal-to-noise ratio More than 90 dB Dynamic range More than 90 dB CD DIGITAL OUT (square optical connector jack, rear panel) Wave length: 660 nm Output level: –18dBm

Tape player section

Recording system 4-track 2-channel stereo Frequency response (DOLBY NR OFF)

40 – 13,000Hz (±3dB),

using a Sony TYPE I

cassette

40 – 14,000Hz (±3dB),

using a Sony TYPE II

cassette

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range (2 band model) North American model: 87.5 – 108.0 MHz

(100 kHz step) Other models: 87.5 – 108.0 MHz

(50 kHz step) (3 band model) FM: 87.5 – 108.0 MHz

(50 kHz step) UKV: 65.0 – 74.0 MHz

(10kHz step) STEREO PLUS Antenna FM wire antenna Antenna terminals 75 Ω unbalanced Intermediate frequency 10.7 MHz

AM tuner section

Tuning range North American model: 530 – 1,710 kHz

(with the tuning interval set at 10 kHz)

531 – 1,710 kHz

(with the tuning interval set at 9 kHz) European model: 531 – 1,602 kHz

(with the tuning interval set at 9 kHz) Middle Eastern model: 531 – 1,602 kHz

(with the tuning interval set at 9 kHz) Other models: 531 – 1,602 kHz

(with the tuning interval set at 9 kHz)

530 – 1,710 kHz

(with the tuning interval set at 10 kHz) Antenna AM loop antenna terminals Intermediate frequency 450 kHz

General

Power requirements North American model: 120 V AC, 60 Hz Mexican model: 120 V AC, 50/60 Hz Australian model: 230 – 240 V AC, 50/60 Hz Other models: 120 V, 220V, or 230 – 240 V AC, 50/60 Hz

Adjustable with voltage selector Power consumption (LBT -DR8AV) 260 W (LBT -W900AV) 190 W Dimensions (w/h/d) Approx. 356 × 423 × 446 mm

(141/8 × 163/4 × 175/8 in) incl. projecting

parts and controls Mass (LBT-DR8AV) Approx. 15.0 kg (33 lb 2 oz.) (LBT-W900AV) Approx. 13.5 kg (29 lb 13 oz.) Supplied accessories AM loop antenna (1)

Remote RM-SR11AV (1)

R6 (size AA) batteries (2)

FM wire antenna (1)

Speaker cords (2)

Design and specifications are subject to change without notice.

— 2 —

CAUTION

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be damaged by heat.

Flexible Circuit Board Repairing

• Keep the temperature of soldering iron around 270˚C during repairing.

• Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or unsoldering.

Laser component in this product is capable of emitting radiation exceeding the limit for Class 1.

SAFETY CHECK-OUT

(US model only)

After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for A C leakage. Check leakage as described below.

LEAKAGE

The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes). Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA WT -540A. Follo w the manufacturers’ instructions to use these instruments.

2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC v oltmeter . The “limit” indication is 0.75 V, so analog meters must have an accurate lo w-v oltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A)

This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior.

T o Exposed Metal

Parts on Set

0.15

Fig. A. Using an AC voltmeter to check AC leakage.

1.5 k

Ω

Earth Ground

Voltmeter (0.75 V)

SAFETY-RELA TED COMPONENT WARNING!!

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

— 3 —

A TTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ! LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE ! SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT . NE REMPLACER CES COMPOSANTS Q UE PAR DES PIÈSES SONY DONT LES NUMÉR OS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPÉMENTS PUBLIÉS P AR SONY.

SECTION 1

SERVICING NOTE

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.

LASER DIODE AND FOCUS SEARCH OPERATION CHECK

Carry out the “S curve check” in “CD section adjustment” and check that the S curve waveform is output four times.

About CD-TEXT display

This unit is provided with a simple CD-TEXT display function. The CD-TEXT contents of 20 tracks are displayed on the fluorescent display tube. Since the function is simple, some special characters may not be displayed, or may be displayed as other characters.

MODEL IDENTIFICATION — BACK PANEL —

Parts No.

PARTS No. MODEL

4-214-785-5π W900AV: US 4-214-785-6π W900AV: CND 4-214-790-0π DR8AV: E, AR 4-214-790-1π DR8AV: SP 4-214-790-2π DR8AV: MX 4-214-790-3π DR8AV: EA 4-214-790-4π DR8AV : A US

• Abbreviation CND : Canadian model AUS : Australian model EA : Saudi Arabia model MX : Mexican model SP : Singapore model AR : Argentina model

— 4 —

TABLE OF CONTENTS

1. SERVICING NOTE ·························································· 4

2. GENERAL ·········································································· 6

3. DISASSEMBLY

3-1. Front Panel ········································································· 8 3-2. Main Board ········································································· 8 3-3. Sub Panel ············································································ 9 3-4. CD-L/CD-R Board and CD Lid Assembly························· 9 3-5. Tape Mechanism Deck and Cassette Lid·························· 10 3-6. CD Mechanism Deck ······················································· 10 3-7. Base Unit ·········································································· 10 3-8. Disc Table ········································································· 11

4. SERVICE MODE···························································· 12

5. MECHANICAL ADJUSTMENTS ····························· 15

6. ELECTRICAL ADJUSTMENTS ······························· 15

7. DIAGRAMS

7-1. Circuit Boards Location ··················································· 19 7-2. Block Diagrams

BD Section ······································································· 21 Deck Section····································································· 23 Main (1/2) Section···························································· 25 Main (2/2) Section···························································· 27 Power Section (DR8AV model) ······································· 29 Power Section (W900AV model) ····································· 31

Display Section································································· 33 7-3. Printed Wiring Board BD Section ································ 37 7-4. Schematic Diagram BD WSection ······························· 39 7-5. Printed Wiring Board Main Section ····························· 41 7-6. Schematic Diagram Main (1/5) Section ·······················43 7-7. Schematic Diagram Main (2/5) Section ·······················45 7-8. Schematic Diagram Main (3/5) Section ·······················47 7-9. Schematic Diagram Main (4/5) Section ·······················49 7-10. Schematic Diagram Main (5/5) Section ······················· 51 7-11. Schematic Diagram Deck Section ································ 53 7-12. Printed Wiring Board Deck Section ····························· 55 7-13. Schematic Diagram Power (1/2) Section

(DR8AV model)································································ 57 7-14. Schematic Diagram Power (2/2) Section

(DR8AV model)································································ 59

7-15. Printed Wiring Board Power Section

(DR8AV model)································································ 61

7-16. Schematic Diagram Power (1/2) Section

(W900AV model) ····························································· 63

7-17. Schematic Diagram Power (2/2) Section

(W900AV model) ····························································· 65

7-18. Printed Wiring Board Power Section

(W900AV model) ····························································· 67 7-19. Schematic Diagram FL Section···································· 69 7-20. Printed Wiring Board FL Section································· 71 7-21. Schematic Diagram Panel VR Section ·························73 7-22. Printed Wiring Board Panel VR Section ······················ 75 7-23. Schematic Diagram TC Panel Section ························· 77 7-24. Printed Wiring Board TC Panel Section ·······················79 7-25. Schematic Diagram CD Panel Section ·························81 7-26. Printed Wiring Board CD Panel Section ······················ 83 7-27. Schematic Diagram CD Motor Section ························85 7-28. Printed Wiring Board CD Motor Section····················· 87 7-29. Schematic Diagram Jack Section ································· 89 7-30. Printed Wiring Board Jack Section ······························ 91 7-31. Schematic Diagram Trans Section

(W900AV model) ····························································· 93 7-32. Printed Wiring Board Trans Section

(W900AV model) ····························································· 95 7-33. Schematic Diagram Trans Section

(DR8AV model)································································ 97 7-34. Printed Wiring Board Trans Section

(DR8AV model)································································ 99 7-35. Schematic Diagram Leaf SW Section ························ 100 7-36. Printed Wiring Board Leaf SW Section ····················· 100 7-37. Schematic Diagram Surround Section ······················· 101 7-38. Printed Wiring Board Surround Section····················· 101 7-39. IC Block Diagrams ························································· 103 7-40. IC Pin Functions ····························································· 104

8. EXPLODED VIEWS

8-1. Case and Back Panel Section ········································· 107 8-2. Front Panel Section 1 ····················································· 108 8-3. Front Panel Section 2 ····················································· 109 8-4. Chassis Section······························································· 110 8-5. TC Mechanism Section 1 (TCM230AWR2/230PWR2) 111 8-6. TC Mechanism Section 2 (TCM230AWR2/230PWR2) 112 8-7. CD Mechanism Section (CDM37M-5BD32L) ·············· 113 8-8. Base Unit Section (BU-5BD32L)··································· 114

9. ELECTRICAL PARTS LIST ····································· 115

— 5 —

Front Panel

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SECTION 2

GENERAL

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Location of Parts and Controls

1 1/u (Power) button and indicator 2 DEMO (STANDBY) button (DR8AV)

POWER SAVE/DEMO (STANDBY) button (W900AV)

3 DISPLAY button 4 SPECTRUM AN ALYZER button 5 Display window 6 GEQ control button 7 SYNC BASS button 8 SYNC EQ button 9 Remote sensor 0 TUNING MODE button !¡ STEREO/MONO button !™ ENTER/NEXT button and indicator !£ TUNER MEMORY button !¢ TUNER/BAND button !∞ TUNING - button !§ TUNING + button !¶ FUNCTION button !• VOLUME knob !ª PHONES jack @º MIC LEVEL knob @¡ MIX MIC jack @™ GROOVE button and indicator @£ SUPER WOOFER button and indicator

$£$¢$∞$§$¶$•

@¢ MODE button @∞ ª (B Deck) button and indicator @§ · (B Deck) button and indicator @¶ p (B Deck) button @• 0 (B Deck) button @ª ) (B Deck) button #º P (B Deck) button #¡ r REC (B Deck) button #™ HI-SPEED DUB button #£ CD SYNCHRO button #¢ PLAY MODE button #∞ REPEAT button #§ 0 (CD) button #¶ ) (CD) button #• ·P (CD) button and indicator #ª p (CD) button $º DISK SKIP button $¡ = AMS + knob $™ VIDEO2 INPUT jacks $£ PRO LOGIC button and indicator $¢ DVD 5.1 CH $∞ EDIT button $§ NON-STOP button and indicator $¶ LOOP button $• FLASH button

$ª DISC 5 button %º DISC 4 button %¡ DISC 3 button %™ DISC 2 button %£ DISC 1 button %¢ DOLBY NR button %∞ DIRECTION button %§ ) (A Deck) button %¶ 0 (A Deck) button %• p (A Deck) button %ª · (A Deck) button ^º ª (A Deck) button ^¡ KARAOKE PON/MPX button ^™ DSP button and indicator ^£ EFFECT button and indicator ^¢ ENTER button and indicator ^∞ GEQ CONTROL button ^§ P. FILE MEMORY ^¶ Equalizer indicators ^• t/CLOCK SET button ^ª SLEEP button &º REC button and indicator &¡ DAILY button and indicator

• AMS is the abbreviation for Automatic Music Sensor.

— 6 —

This section is extracted from instruction manual.

— 7 —

SECTION 3

)

DISASSEMBL Y

Note : Follow the disassembly procedure in the numerical order given.

3-1. FRONT PANEL

Connector (CN452)

Connector (CN702)

Three flat type wires

(CN303,CN304,CN431)

Front panel

Connector (CN802)

3-2. MAIN BOARD

!¢

Back panel

!£

Power cord

!™

Screw (BVTP 3x8)

(HCD-W900AV)

Four screw (BVTP 3x8)

Two screws (BVTP 3x8)

Screw (BVTP 3x8

Four screws (BVTP 3x8)

Two screws (BVTP 3x8)

(HCD-DR8AV)

Five screws (BVTP 3x8)

Seven screws (BVTP 3x8)

!§

Main board

Connector (CN903)

(HCD-DR8AV)

Flat type wire (CN1

!¡

Fan motor

(HCD-DR8AV)

Flat type wire (CN411)

Connector (CN412)

— 8 —

!∞

T uner unit

Two screws (BVTP 3x8

3-3. SUB PANEL

Open the CD lid assembly

Sub panel block

Two screws (BTP 2.6x6)

Screw (BVTP 3x8)

Three screws (BVTP 2.6x8)

Two screws (BVTP 2.6x8)

Front input board

Two screws (BVTP 2.6x8)

Bracket (CD-R2)

3-4. CD-L/CD-R BOARD AND CD LID ASSEMBLY

Three screws (BVTP 2.6x8)

Bracket (CD-L)

CD-L board

Three screws

(BVTP 2.6x8)

Torsion spring (CD-L)

!£

CD lid assembly

!™

Torsion spring (CD-L)

Sub panel assembly

Knob (CD)

Nut

CD-R board

!¡

Torsion spring (CD-R)

Three screws

(BVTP 2.6x8)

Bracket (CD-R)

Two screws (BVTP 2.6x8)

Sub panel assembly

CD lid assembly

— 9 —

3-5. TAPE MECHANISM DECK AND CASSETTE LID

)

Claw

Holder assembly

Claw

Holder (A) assembly

(Refer to lower figure)

Torsion spring (TC-A)

Three screws (BVTP 2.6x8)

Three screw

(BVTP 2.6x8

Cassette lid assembly

Cassette lid (A) assembly

(Refer to upper figure)

Claw

Cassette lid (B) assembly

(Refer to upper figure)

3-6. CD MECHANISM DECK

Portion

3-7. BASE UNIT

Torsion spring (TC-B)

Holder (B) assembly

(Refer to lower figure)

Portion

T ape mechanism

CD mechanism

deck

Five screws (BVTP3x8)

Base uni

Boss

Yoke fitting

— 10 —

3-8. DISC TABLE

Note:

When the disc table is installed, adjust the positions of roller cam and mark ” as shown in the figure, then set to the groove of disc table.

Screw (BVTP3X8)

Bracket (BU)

Screw (BVTP3X8)

Stop screw

Disc table

— 11 —

SECTION 4

SERVICE MODE

MC Cold Reset

• The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to the customer.

Procedure:

1. Press three buttons t/CLOCK SET , ENTER , and 1/u simultaneously.

2. “COLD RESET” is displayed on the fluorescent display tube and reset is executed.

CD Delivery Mode

• This mode moves the pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair.

Procedure:

1. Press 1/u button to turn the set ON.

2. Press LOOP button and 1/u button simultaneously.

3. A message “LOCK” is displayed on the fluorescent indicator tube, and the CD delivery mode is set.

MC Hot Reset

• This mode resets the set with the preset data kept stored in the memory . The hot reset mode functions same as if the po wer cord is plugged in and out.

Procedure:

1. Press three buttons t/CLOCK SET , ENTER , and DISC 1 simultaneously.

2. The fluorescent indicator tube becomes blank instantaneously, and the set is reset.

Sled Servo Mode

• This mode can run the CD sled motor freely. Use this mode, for instance, when cleaning the pick-up.

Procedure:

1. Press 1/u button to turn the set ON.

2. Press three buttons t/CLOCK SET , ENTER , and DISC 5 simultaneously.

3. The Sled Servo mode is selected, if “CD” is blanking on the fluorescent indicator tube.

4. With the CD in stop status, When the = AMS + knob is rotated in the clockwise direction, the pick-up moves outside. When

rotated counterclockwise, it moves inside.

5. To exit from this mode, perform as follows:

1) Move the pick-up to the most inside track.

2) Execute MC cold reset. (Press the three buttons t/CLOCK SET , ENTER , and 1/u button simultaneously.)

Note:

• Always move the pick-up to most inside track when exiting from this mode. Otherwise, a disc will not be unloaded.

• Do not run the sled motor excessively, otherwise the gear can be chipped.

Change-over of AM Tuner Step between 9kHz and 10kHz (DR8AV Only)

• A step of AM channels can be changed over between 9kHz and 10kHz.

Procedure:

1. Press 1/u button to turn the set ON.

2. Select the function “TUNER”, and press TUNER/BAND button to select the BAND “AM”.

3. Press 1/u button to turn the set OFF.

4. Press ENTER and 1/u buttons simultaneously, and the display of fluorescent indicator tube changes to “AM 9k STEP” or “AM 10k

STEP”, and thus the channel step is changed over.

LED and Fluorescent Indicator Tube All Lit, Key Check Mode

Procedure:

1. Press three buttons t/CLOCK SET , ENTER , and DISC 2 simultaneously.

2. LEDs and fluorescent indicator tube are all turned on.

Press DISC 2 button, and the key check mode is activated.

3. In the key check mode, the fluorescent indicator tube displays “K @ V0 J0”. Each time a b utton is pressed, “K”value increases. Ho wever ,

once a button is pressed, it is no longer taken into account. “J” Value increases like 1, 2, 3 ... if rotating = AMS + knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction. “V” Value increases like 1, 2, 3 ... if rotating VOLUME knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “-” direction.

4. To exit from this mode, press three buttons in the same manner as step 1, or disconnect the power cord.

– 12 –

AMS Test Mode

• This mode is used for checking the AMS operations of the tape deck.

JIG 7-819-039-12 Alignment tape, AMS-110A

Procedure:

1. Press the 1/u button to turn the set ON.

2. Set the tape (AMS-110A).

3. Press the three buttons t/CLOCK SET , ENTER , and DISC 3 button simultaneously.

4. “TEST MODE” is displayed on the fluorescent display tube.

5. Press the FUNCTION button and switch the function to the deck with the tape (AMS-110A).

6. Press the CD SYNCHRO button. “AMS CHECK” is displayed on the fluorescent display tube and the tape is rewound.

7. AMS starts in the normal direction. If the AMS count is 2 at shut down, proceed to step 8. “NG” is displayed at other times, and the deck stops.

8. AMS starts in the opposite direction. If the AMS count is 2 at shut down again, “OK” is displayed. “NG” is displayed at other times.

Aging Mode

During the aging mode, both the CD player and tape deck are executed together.

• If an error occurs:

Aging stops, and the error state is displayed on the fluorescent display tube.

• If no error occurs:

Aging is repeated.

Procedure:

1. Press the 1/u button to turn the set ON.

2. Load 10 minute tapes with unbent rec-proof tabs in decks A and B.

3. Set CDs on the DISC 1 and DISC 4 tables.

4. Set the CD mode REPEAT to OFF and PLAY MODE to ALL DISCS. (Press the PLAY MODE and REPEAT buttons to set these modes.)

5. Press the FUNCTION button to switch the function to “CD”.

6. Press the three buttons t/CLOCK SET , ENTER , and DISC 4 button simultaneously.

7. Aging starts.

8. To end aging, press the 1/u button to turn the set OFF.

Aging Sequence:

Aging is performed in the following sequence.

• Tape Deck

1. The tape in deck A is rewound. “TAPE A AG-1” is displayed.

2. The FWD side of deck A is played for two minutes. “TAPE A AG-2” is displayed.

3. The tape in deck A is fast forwarded. “TAPE A AG-3” is displayed. Fast forward is carried out for 20 seconds or to the tape end.

4. The RVS side of deck A is played for two minutes. “TAPE A AG-4” is displayed.

5. The tape in deck A is rewound. “TAPE A AG-5” is displayed.

6. The FWD side of deck B is played for two minutes. “TAPE B AG-2” is displayed.

7. The tape in deck B is fast forwarded. “TAPE B AG-3” is displayed. Fast forward is carried out for 20 seconds or to the tape end.

8. The RVS side of deck B is played for two minutes. “TAPE B AG-4” is displayed.

9. The tape in deck A is rewound. “TAPE A AG-5” is displayed.

10. Repeated from step 2.

• CD

1. The tray rotates.

2. DISC 1 is chucked.

3. The TOC is read.

4. The first track is played for 2 seconds.

5. The last track is played for 2 seconds.

6. The tray rotates.

7. DISC 4 is chucked.

8. The TOC is read.

9. The first track is played for 2 seconds.

10. The last track is played for 2 seconds.

11. Repeated from step 1.

– 13 –

• Display when ended abnormally When the tape deck is abnormal:

The state when ended abnormally is displayed. The contents of display are the same as that during aging.

When the CD player is abnormal:

A message indicating that errors such as “CD MEC ERR” have occurred. Check the error contents in the following error history display mode.

Error History Display Mode

Mode which enables the history of error occurring in the CD player to be checked. Execute this mode after ending the aging mode.

Procedure:

1. Press the 1/u button to turn the set ON.

2. Press the three buttons t/CLOCK SET , ENTER , and CD SYNCHRO simultaneously.

3. A message such as “EMC@@EDC**” is displayed. @@ : Number of mechanical errors (Up to three past errors) ** : Number of errors (NO DISC ERROR) which occurs after chucking (Up to three past errors)

4. When checking the history of mec hanical errors, press the PLAY MODE button. When checking errors after chucking, press the REPEAT button to switch the display.

5. Press the 1/u button to end and turn the set OFF.

6. To erase the error history, perform COLD reset. (Press the three buttons t/CLOCK SET , ENTER , and DISC 1 simultaneously.

• Viewing the mechanical error history display

(Switch the history by pressing the PLAY MODE button.)

Display E@@M#*****

@@ : Error number. 00 is the newest.

# : Operating state of table

0 : Currently in the INITIAL mode 7 : Currently rotating to the right 8 : Currently rotating to the left A : Currently chucking down B : Currently chucking up

* : In valid

• Viewing the NO DISC ERROR history display (Switch the history by pressing the REPEAT button.)

Display E@@D##$$%*

@@ : Error number. 00 is the newest

## : Error contents

01: Focus error 02: GFS error 03: Setup error

$$ : Retries

00: NO DISC is determined without attempting chucking

retry

02: NO DISC is determined after chucking retry.

% : State when determined as NO DISC 1 : When stopped 2 : At setup 3 : At TOC READ 4 : When accessing 5 : When playing 6 : When pausing 7 : When manual searching (during play) 8 : When manual searching (during pausing) * : In valid

– 14 –

SECTION 5

MECHANICAL ADJUSTMENTS

SECTION 6

ELECTRICAL ADJUSTMENTS

Precaution

1. Clean the following parts with a denatured alcohol-moistened swab:

record/playback heads pinch rollers erase head rubber belts capstan idlers

2. Demagnetize the record/playback head with a head demagnetizer.

3. Do not use a magnetized screwdriver for the adjustments.

4. After the adjustments, apply suitable locking compound to the parts adjusted.

5. The adjustments should be performed with the rated power supply voltage unless otherwise noted.

Torque Measurement

Mode

FWD

back tension

REV

back tension

FF/REW

FWD tension

REV tension

Torque meter

CQ-102C

CQ-102RC

CQ-201B

CQ-403A

CQ-403R

Meter reading

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

31 to 71 g • cm

(0.43 – 0.98 oz • inch)

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

71 to 143 g • cm

(0.98 – 1.99 oz • inch)

100 g or more

(3.53 oz or more)

100 g or more

(3.53 oz or more)

DECK SECTION 0 dB=0.775V

1. Demagnetize the record/playback head with a head demagnetizer.

2. Do not use a magnetized screwdriver for the adjustments.

3. After the adjustments, apply suitable locking compound to the parts adjusted.

4. The adjustments should be performed with the rated power supply voltage unless otherwise noted.

5. The adjustments should be performed in the order given in this service manual. (As a general rule, playback circuit adjustment should be completed before performing recording circuit adjustment.)

6. The adjustments should be performed for both L-CH and RCH.

7. Switches and controls should be set as follows unless otherwise specified.

Tape Signal Used for

P-4-A100

WS-48B

P-4-L300

Record/Playback Head Azimuth Adjustment (Deck A, Deck B)

Note: Perform this adjustments for both decks.

Procedure:

1. Mode : Playback

test tape P-4-A100 (10kHz, –10dB)

10 kHz, –10 dB

3 kHz, 0 dB

315 Hz, 0 dB

MD OUT

Azimuth Adjustment

Tape Speed Adjustment

Level Adjustment

level meter

set

+ –

2. Turn the adjustment screw and check output peaks. If the peaks do not match for L-CH and R-CH, turn the adjustment screw so that outputs match within 1 dB of peak.

L-CH peak

screw position

R-CH peak

output level

within 1 dB

L-CH peak

R-CH peak

within 1dB

screw position

— 15 —

3. Mode: Playback Tape Speed Adjustment (Deck A)

)

test tape P-4-A100 (10kHz, –10dB)

oscilloscope

MD OUT

Note: Set the test mode using the following method and begin tape

speed adjustment. In the test mode, the speed will switch to double speed or normal speed each time the HI-SPEED DUB button is pressed.

set

Waveform of oscilloscope

in phase 45

good

135

wrong

180

4. After the adjustments, apply suitable locking compound to the parts adjusted.

Adjustment Location: Playback Head (Deck A)

Record/Playback/Erase Head (Deck B)

Remove the cassette lid.

Procedure:

With the power turned ON, press the t/CLOCK SET button, ENTER button, and DISC 3 button simultaneously. (The “VOLUME” on the fluorescent display tube will blink while in the test mode.) To exit the test mode, press the 1/u button.

1. Insert the WS-48B into deck B.

2. Press the · button of deck B.

3. Press the HI-SPEED DUB button and play the tape at double speed.

4. Adjust RV1001 of the LEAF SW board so that the reading of the frequency counter becomes 6000 ± 180 Hz.

5. Press the HI-SPEED DUB button and play the tape at normal speed.

6. Adjust RV1002 of the LEAF SW board so that the reading of the frequency counter becomes 3000 ± 90 Hz.

Adjustment Location: LEAF SW board

Sample Value of Wow and flutter

W.RMS (JIS) less than 0.3% (test tape: WS-48B)

Playback Level Adjustment (Deck A, Deck B)

Procedure:

Mode: Playback

Reverse Foward

test tape P-4-L300 (315Hz, 0dB)

set

MD OUT

level meter

Deck A is RV311 (L-CH) and RV411 (R-CH), deck B is RV301 (L-CH) and RV401 (R-CH) so that adjustment within the following adjustment level.

Adjustment level:

CN301 playback level: 301.5 to 338.3 mV (–8.2 to –7.2 dB) level difference between the channels: within ± 0.5 dB Adjustment Location: AUDIO board

Adjustment Location [LEAF SW BOARD]

RV1001(High Speed) RV1002(Normal Speed

RV1002 RV1001

— 16 —

Record Bias Adjustment (Deck B)

AF OSC

VIDEO 1 (AUDIO) IN 315Hz 50 mV (–23.8 dB)

blank tape CS-123

set

attenuator

600

Ω

Record Level Adjustment (Deck B)

Procedure:

INTRODUCTION

When set to the test mode performed in T ape Speed Adjustment, when the tape is rewound after recording, the “REC memory mode” which rewinds only the recorded portion and playback is set. This “REC memory mode” is convenient for performing this adjustment. During recording, the input signal FUNCTION will automatically switch to VIDEO 1. (After recording, press the 0 button without stopping will return to the position where recording was started.)

1. Press FUNCTION button to select VIDEO 1. (This step is not necessary if the above test mode has already been set.)

2. Insert a tape into deck B, press the r REC button, and then press the · button to start recording.

3. Mode: Record

4. Mode: Playback

VIDEO 1 (AUDIO) IN

1) 315 Hz

2) 10 kHz

AF OSC

attenuator

600

Ω

} 50 mV (–23.8 dB)

blank tape CS-123

set

Procedure:

INTRODUCTION

1. Press FUNCTION button to select VIDEO 1. (This step is not necessary if the above test mode has already been set.)

2. Insert a tape into deck B, press the r REC button, and then press the · button to start recording.

3. Mode: Record

4. Mode: Playback

5. Confirm playback the signal recorded in step 2 become

recorded position

set

MD OUT

level meter

adjustment level as follows. If these levels do not adjustment level, adjust the RV341 (LCH) and R V441 (R-CH) on the A UDIO board to repeat steps 3 and 4.

Adjustment level: The playback output of 10 kHz lev el dif ference

against 315 Hz reference should be ± 1.0 dB.

Adjustment Location: AUDIO board

Adjustment Location:

[AUDIO BOARD] (Conductor Side)

RV341(Lch),RV441(Rch) Record Bias

RV311(Lch),RV411(Rch) Playback Level (Deck A)

5. Confirm playback the signal recorded in step 2 become

recorded position

set

MD OUT

level meter

adjustment level as follows. If these levels do not adjustment level, adjust the RV301 (LCH) and R V351 (R-CH) on the MAIN board to repeat steps 3 and 4.

Adjustment level:

CN403 playback level: 47.2 to 53.0 mV (–24.3 to –23.3 dB)

Adjustment Location: MAIN board

[MAIN BOARD] (Conductor Side)

RV301 RV401

RV441 RV341

RV301(Lch),RV401(Rch) Playback Level (Deck B)

RV311

RV411

— 17 —

Record Level (Lch) RV301

1 3

IC301

RV351 Record Level (Rch)

CD SECTION

Note:

1. CD Block is basically constructed 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. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.

Note: Clear RF signal waveform means that the shape “◊” can be

clearly distinguished at the center of the waveform.

RF signal waveform

VOLT/DIV : 200mV TIME/DIV : 500ns

level : 1.45 ± 0.25 Vp-p

S Curve Check

BD board

TP (FE) TP (VC)

oscilloscope

+ –

Procedure :

1. Connect the oscilloscope to test points TP (FE) and TP (VC).

2. Connect TP (FEI) and GND, and TP (AGCCON) and GND of the BD board with lead wires.

3. Press the 1/u button to turn the set ON.

4. With the disc (YEDS-18) loaded, press the ·P button and perform focus search. (Focus search will be performed in the same way even while the disc table is pushed in and out.)

5. Check the symmetry and peak to peak level of the oscilloscope waveform (S curve) at this time.

S-curve waveform

symmetry

Within 4

1 Vp-p

E-F Balance (1 Track Jump) check

oscilloscope

BD board

TP (TE) TP (VC)

+ –

Procedure:

1. Connect oscilloscope to test point TP (TE) on BD board.

2. Press the 1/u button to turn the unit ON.

3. Put disc (YEDS-18) in to play the number five track.

4. Press the ·P button.

5. Check the level B of the oscilloscope's waveform and the A (DC voltage) of the center of the Traverse waveform. Confirm the following:

• A/B x 100 = less then ± 22 (%)

• B = 1.3 ± 0.6 Vp-p

1 track jump waveform

Center of the waveform

A (DC voitage)

6. After check, remove the lead wire connected in step 2. Note: • Try to measure several times to make sure than the ratio of

A : B or B : A is more than 10 : 7.

• Take swee p time as long as possible and light up the brightness to obtain best waveform.

RF Level Check

oscilloscope

BD board

TP (RF) TP (VC)

+ –

Procedure :

1. Connect oscilloscope to test point TP (RF) and TP (VC) on BD board.

2. Connect TP (AGCCON) and GND of the BD board with lead wires.

3. Press the 1/u button to turn the set ON.

4. Put disc (YEDS-18) in and playback 5 track.

5. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not.

6. After check, remove the lead wire connected in step 2.

level : 1.3

0.6 Vp-p

Adjustment Location :

[ BD BOARD ] — SIDE A —

TP (VC)

TP (RF)

TP (AGCCON)

TP (FE)

TP (TE)

TP (FE1)

Symmetry

— 18 —

7-1. CIRCUIT BOARDS LOCATION

SECTION 7

HCD-DR8AV/W900AV

DIAGRAMS

TC-A board

FL board

PANEL VR board

SURROUND AMP board

TC-B board

FRONT INPUT board

TUNER UNIT

JACK board

SUB TRANS board

(W900AV)

TRANS board

LEAF SW board

LED (PANEL) board

CD-L board

DOOR SW board

TABLE SENSOR board

CD-R board

MAIN boar

PA board

AUDIO board

CD MOTOR board

LED (CD) board

BD board

— 19 —

HCD-DR8AV/W900AV

7-2. BLOCK DIAGRAMS

BD SECTION

OPTICAL PICK-UP BLOCK

(KSS-213D/Q-NP)

DETECTOR

LASER DIODE

POWER

MOTOR

SPINDLE

MOTOR

M102 SLED

M101

• SIGNAL PATH : CD : Digital out

ABC

TRACKING

COIL

FOCUS

COIL

VCC VC

DRIVE

Q101

FOCUS/TRACKING COIL DRIVE SPINDLE/SLED MOTOR DRIVE

T+

CH2OUTR

T–

CH2OUTF

F+

CH1OUTF

F–

CH1OUTR

SD+

CH3OUTF

SD–

CH3OUTR

SP+

CH4OUTF

SP–

CH4OUTR

IC101

IC103

RF AMP

VREF

IC102

CH2FIN

CH2RIN

CH1FIN

CH1RIN

CH3RIN

CH3FIN

CH4SIN CH4BIN

MUTE

SUMMING

TRACKING

APCLD/PD

AMP

5 6

2 3

23 24

25 27

AMP

FOCUS ERROR

AMP

ERROR

AMP

TFDR TRDR

FFDR FRDR

SRDR SFDR

BUFFER

HOLD SW

RF EQ

AMP

14 49

LDON

REF

1521

INTEGRATOR

DIGITAL SERVO

DIGITAL SIGNAL PROCESSOR

RF AC

ASYI

ASYMMETRY CORRECTION

ASYO

RFDC

43 39

40 41 42

30 31

32 33

29 28

SE TE CE

TFDR TRDR

FFDR FRDR

SRDR SFDR

MDP

OPERATIONAL

AMPLIFIER

ANALOG SWITCH

PWM

GENERATOR

TRACKING

PWM

GENERATOR

FOCUS

PWM

GENERATOR

SLED PWM

GENERATOR

DIGITAL

CLV

DIGITAL

PLL

A/D

CONVERTER

SERVO DSP

TRACKING

SERVO

FOCUS SERVO

SLED

SERVO

16K

RAM

EFM

DEMODULATION

SUBCODE

PROCESSOR

SERIAL IN

INTERFACE

OVER SAMPLING

DIGITAL FILTER

3rd ORDER

NOISE SHAPER

PWM PWM

DATA BUS

ERROR

CORRECTOR

D/A

INTERFACE

SERVO

AUTO

SEQUENCER

TIMING

LOGIC

DIGITAL

CPU

INTERFACE

SERVO

INTERFACE

OUT

XTAI

XTAO

D OUT

XRST SQSO SQCK

SENS

DATA

XLAT

CLOK

SCOR XLON

SCLK SSTP

AOUT1

AIN1

LOUT1

AOUT2

AIN2

LOUT2

3 1 2

5 6

20 14

70 71 72

77 76 75

X101

16.9344MHz

+5V

DOUT

XRST SQSO SQCK

SENS

DATA XLT

CLOK

SCOR

LIMIT SW

L OUT

R OUT HOLD

S101

MAIN

SECTION

(Page 25, 27)

— 21 — — 22 —

DECK SECTION

HCD-DR8AV/W900AV

HP101 PB HEAD (DECK A)

REC/PB HEAD

(DECK B)

HRPE101

ERASE HEAD

PB A/B

MS OUT

TC PB L LM ON/OFF

NORM/HIGH NR ON/OFF REC/PB/PASS

TC REC L

BIAS ON/OFF RM ON/OFF ALC ON/OFF

RELAY CAPM CNT1 CAPM CNT2

CAP M H / L

A SHUT

MAIN

SECTION

(Page 25,

26, 27)

120

DOLBY NR IC301

S1008 B CrO

DOLBY NR

RECOUT

BIAS SW

32 33

PAS

CAPSTAN

MOTOR

DOL

DOLBY

TYPE B

CN301

R CH

PB OUT

40 25

LM ON/OFF

NORM/HIGH

REC/PB/PASS

BIAS ON/OFF

RM ON/OFF

ALC ON/OFF

NR ON/OFF

LIN

CAP MOTOR CONTROL Q336-343

SPEED

CONTROL

Q1001

RV1002

NORMAL

SPEED

18 23 24

20 22 15

RV1001

HIGH

SPEED

SWITCH

Q335

REEL

DETECT

IC1001

S1004 A CrO

RV311

PLAYBACK

LEVEL

DECK A

RV301

PLAYBACK

LEVEL

DECK B

RV341

REC

BIAS

REC BIAS

BIAS OSC

T621, Q621, 622

IC611

R CH

ERASE BIAS

IC601

IC602

REC/PB

PB-A/B

A IN

B IN

+7.5V

EQIN

Q623

EQOUT

A 120/70 B NORM/CROM/METAL

RV301

REC LEVEL

REEL

DETECT

IC1002

S1001 (A PLAY)

• R CH : Same as L ch

• SIGNAL PATH

+5V

S1002 (B PLAY)

: PB (DECK A) : PB (DECK B) : REC (DECK B)

• PLUNGER SOLENOID is supplied as the MECHANICAL BLOCK ASSY.

A DECK/ B DECK PLUNGER

TRIGGER MOTOR CONTROL Q331-334

S1003

(A HALF)

S1005

(REC A) S1006

(B HALF)

S1009

(REC B)

+5V

B SHUT

A PLAY

B PLAY

A HALF

B HALF/REC A/REC B

B TRIG

A TRIG

— 23 — — 24 —

HCD-DR8AV/W900AV

MAIN (1/2) SECTION

VIDEO 2

DVD VIDEO

VIDEO 1

PHONO

(L IN)

FM/AM TUNER TUNER UNIT IS SUPPLED AS THE ASSEMBLED BLOCK

DECK

SECTION

(Page 24)

SECTION

(Page 22)

POWER

SECTION

(Page 30,

32)

B A

MD (L IN)

V1, AU, L-CH IN

V2, AU, L-CH IN

FRONT

(L IN)

J804

J702

J701

ST-L

TC PB L

CD-L

J701

MIC-SIG

J701

J804

J703

AV SWITCH

IC191

IN3

IN2

IN1

2 3 5

46 45 28

IC181 SELECTOR

10 9

46 45

VD OUT

J702

J701

TC REC L

F-RELAY

SPEANA

L-CH SIG

DBFB

VIDEO

OUT

MD OUT

B D

(Page 29, 31)

DECK

SECTION

(Page 24)

DISPLAY

SECTION

(Page 33)

POWER

SECTION

POWER

SECTION

(Page 32)

POWER

SECTION

CBA

IC601

PHONO AMP

SOUND PROCESSOR 1

IN A2

IN B2

IN C2

IN D2

IN E2

MIC IN

IN F2 KEY IN2

D OUT 2

SUPER WOOFER

IC101

REC B2

REC A2

L+R

BUS OUT2

BUF IN2

BBB2 BBA2

LATCH

DATA

CLOCK

36 37 38 39

MAIN CONTROL

DBFB-H/L SW-MODE 493-LAT 493-DATA 493-CLK PL-CLK PL-DATA PL-LAT V_MUTE FUNC_SEL1 FUNC_SEL0

IC501 (1/2)

F-RELAY

LINE-MUTE

RESET

Q115

SWITCH

38 47 48

Q111

SWITCH

Q112

SWITCH

28 45 46

7 34 38 47 48 23 24 25 28 45 46

MUTE

SWITCH

Q113

INV

Q804

INV

Q803

CENTER

REAR

(R IN)

WOOFER

J703

SURROUND PROCESSOR

IC201

LT-IN

C-IN

SL-IN

SW-IN

VRSW-IN

SCK

DATA

REQ

VOLOUT C

VOLOUT SL

VOLOUT SW

D805

23 22 24

EVER+5V

IC800

RESET

1 3

GEN

MUTE

SWITCH

Q731

INV

Q801

MUTE

SWITCH

Q281

INV

Q802

MUTE

SWITCH

Q271

J704

RESET

REAR-L

CENTER

WOOFER

OUT

DISPLAY

SECTION

(Page 33)

POWER

SECTION

(Page 29, 31)

• R CH: Same as L ch

• SIGNAL PATH : FM : CD : PB : REC

: VIDEO/MD

— 25 — — 26 —

MAIN (2/2) SECTION

POWER

SECTION

(Page 29, 31)

POWER

SECTION

(Page 30, 32)

TRANSMITTING

BD (CD)

SECTION

(Page 22)

CAPM-CNT 2 CAPM-CNT 1

CAP-M-H/L

LM ON/OFF

REC/PB/PASS

NR ON/OFF RM ON/OFF

DECK

SECTION

(Page 24)

FM/AM TUNER TUNER UNIT IS SUPPLED AS THE ASSEMBLED BLOCK

BIAS ON/OFF

NORM/HIGH

ALC ON/OFF

B-HALF/REC A/REC B

PL-RELAY

FAN.DET

HP.SW

IC781 OPTIC

D.OUT

DOUT SCOR

SQ-DATA

SQ-CLK

CD-DATA

CD-CLK

SENS

HOLD X-LAT X-RST

B TRG A TRG

MS OUT

PB A/B

B PLAY A PLAY A-HALF

B SHUT A SHUT

RELAY

RDS-INT

RDS-DATA

ST-MUTE

STEREO

TUNED

ST-CE

ST-DOUT

ST-DIN ST-CLK

19 32 33 35 37 56 57 58 59

72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 100

20 21 49 50 51 52 53 54 55

PL-RELAY H/P IN

SCOR SQ-DATA SQ-CLK CD-DATA CD-CLK SENS HOLD XLT XRST

B-TRG A-TRG CAPM-CNT 2 CAPM-CNT 1 CAP-M-H/L AMS IN TC-MUTE R/PB/PAS NR-ON/OFF REC-MUTE BIAS EQ-H/N PB-A/B ALC B-PLAY-SW A-PLAY-SW A-HALF B-HALF B-SHUT A-SHUT TC-RELAY

RDS-INT RDS-DATA ST-MUTE STEREO TUNED ST-CE ST-DOUT ST-DIN ST-CLK

MAIN CONTROL

IC501 (2/2)

STK-POWER

STBY RELAY

ENC 3/UP-SW

ENC 2/DISC-LED

HP MUTE PROTECT

FL OFF

WAKE UP

IIC-CLK

IIC-DATA

TBL-L

TBL-R

DISC-SENS

XC-IN

XC-OUT

X-OUT

X-IN

POWER

CD-POWER

61 4

X501

32.768kHz

X502

16MHz

W900AV ONLY

MOTOR DRIVER

IC201

TABLE SENSOR

IC202

LED DRIVER

Q201

S201

UP SWITCH

HCD-DR8AV/W900AV

DR8AV ONLY

FAN901

FAN SWITCH

Q932 SWITCH

Q904

SWITCH

Q902

SWITCH

Q911

SWITCH

Q913

SWITCH

Q961, 962

IC933

+7V

1 3

REG

Q912 SWITCH

(LED–7V)

(LED+7V)

(D+5V SW)

(CD D+5V SW)

(CD A+5V SW)

PL A+10V ST +10V

TC MOTOR+12V

M+7V (UNSW) 7V

A–7.5V –V BIAS

–7

TC–7V –7V

A+7.5V +V BIAS

–7

TC–7V –7V

LED 5V LED 5V

D+5V UNSW

5V AU D+5V

D+5V (SW) A+5V (SW)

POWER

1 93 27

STK POWER HP MUTE PROTECT

SECTION

(Page 29, 31)

POWER

SECTION

+UNREG, 17V

(Page 31)

POWER

ECO

DATA

CLOCK

WAKE UP

M201

TABLE

MOTOR

D201

DISC No.

DISPLAY SECTION

(Page 33)

UN–10V

UN+10V

IC931

+10V

1 3

REG

IC932

+12V

1 3

REG

IC951

–7V

2 3

REG

Q905

SWITCH

IC901

+7V

1 3

REG

Q906

INV

IC911

+5V

1 3

REG

Q914

SWITCH

IC921

Q931

SWITCH

Q903

SWITCH

Q901

SWITCH

EVER +5V

FAN

POWER

SECTION

(Page 29, 31)

+5V

1 3

REG

• R CH : Same as L ch

Q921

SWITCH

CD D+5V SW CD A+5V SW

— 27 — — 28 —

HCD-DR8AV/W900AV

POWER SECTION (DR8AV model)

MAIN 1

SECTION

(Page 26)

MAIN 1

SECTION

(Page 26)

MAIN 2

SECTION

(Page 27)

MAIN 2

SECTION

(Page 28)

G E

J801

MIX MIC

F-RELAY

L-CH IN

STK-POWER

PROTECT HP-MUTE

EVER +5V

D804

MIC AMP

IC850 (1/2)

POWER AMP & VOLUME CONTROL

VOLUME

CONTROL

VOLUME CONTROL D802, 852

MUTE

SWITCH Q803,804

SWITCH

Q833

MUTE

SWITCH Q103,104

IC801

PRE

-VCC

-VH

THERMAL

SENSOR

OVERHEAT

Q831,832

Q834 SWITCH

OVERHEAT

Q131,132

DET

MIC VOLUME

RV850

OVERLOAD

DET

Q801

OVERLOAD

DET

Q101

R-CH

PROTECT

DC DET

Q433,434

OVERLOAD

DET

Q151

PROTECT

DET

Q432

PROTECT

BUFFER

Q439

RELAY

DRIVER

Q401-402

PROTECT

DRIVER

Q437

RY401

RELAY

SWITCH

Q431

R-CH

MIC AMP

IC850 (2/2)

HEADPHONE

MUTE

Q805

FAN DET

D405-409

R-CH

DBFB

DET

D803

R-CH

MIC-SIG

TM401

DBFB

HP.SW

FAN.DET

FRONT

J803

PHONES

C K

MAIN 1

SECTION

(Page 25)

DISPLAY

SECTION

(Page 33)

MAIN 1

SECTION

(Page 26)

MAIN 2

SECTION

(Page 27)

MAIN 1

SECTION

(Page 26)

MAIN 2

SECTION

(Page 29)

• R CH : Same as L ch

• SIGNAL PATH : FM

REAR-L

CENTER

PL-RELAY

CCC

SURROUND AMP

IC101

THERMAL

SENSOR

RY402

RELAY

DRIVER

VF (–35V)

+VH

-VH

–35V REG Q903,904

RECT D831

Q403, 407

-VH

+UNREG. 12V

UN +10V UN –10V

+VL

-VL

RECT

D833-836

RECT

D841-844

RECT D832

F963 F964

TRANSFORMER

F961

F962

POWER

T951

240V - 220V - 120V

VOLTAGE SELECTOR

JW969

JW971

R-CH

E, EA, AR, SP MODEL

VS901

JW967

JW965 JW966

F951

E, EA, AR, SP MODEL

TM402

AUS MODEL

MX MODEL

CENTER

AC IN

SURROUND

REAR

• Abbreviation AUS : Australian model EA : Saudi Arabia model MX : Mexican model SP : Singapore model AR : Argentina model

— 29 — — 30 —

POWER SECTION (W900AV model)

J801

MIX MIC

MAIN 1

SECTION

(Page 26)

MAIN 1

SECTION

(Page 26)

MAIN 2

SECTION

(Page 27)

MAIN 2

SECTION

(Page 28)

F-RELAY

L-CH IN

STK-POWER

PROTECT

HP-MUTE

EVER +5V

D804

MIC AMP

IC850 (1/2)

POWER AMP & VOLUME CONTROL

VOLUME

CONTROL

VOLUME CONTROL D802, 852

MUTE

SWITCH Q803,804

SWITCH

Q833

IC801

PRE

-VCC

-VH

THERMAL

OVERHEAT

Q831,832

Q834 SWITCH

SENSOR

1216

DET

MIC VOLUME

RV850

OVERLOAD

DET

Q801

R-CH

PROTECT

DC DET

Q433,434

PROTECT

DET

Q432

PROTECT

BUFFER

Q439

RELAY

DRIVER

Q401-402

PROTECT

DRIVER

Q437

RY401

RELAY

SWITCH

Q431

MIC AMP

IC850 (2/2)

HEADPHONE

MUTE Q805

R-CH

DBFB

DET

D803

R-CH

MIC-SIG

TM401

DBFB

HP.SW

FRONT

J803

PHONES

C K

O H

MAIN 1

SECTION

(Page 25)

DISPLAY

SECTION

(Page 33)

MAIN 1

SECTION

(Page 26)

MAIN 2

SECTION

(Page 27)

HCD-DR8AV/W900AV

(Page 26)

(Page 29)

MAIN 1

SECTION

MAIN 2

SECTION

• R CH : Same as L ch

• SIGNAL PATH : FM

REAR-L

CENTER

PL-RELAY

MUTE

SWITCH Q103,104

CCC

SURROUND AMP

IC101

OVERHEAT

DET

Q131,132

THERMAL

SENSOR

OVERLOAD

DET

Q101

VF (–35V)

+VH

OVERLOAD

DET

Q151

-VH

–35V REG

Q903,904

RECT D831

+5.6V

RELAY

DRIVER

Q403, 407

-VH

+UNREG. 12V

UN +10V UN –10V

+5.6V REG

IC901

RY402

+VL

-VL

TM402

R-CH

POWER

TRANSFORMER

RECT

D833-836

RECT

D841-844

RECT D832

RECT

D902-905

F963 F964

T951

F961

F962

SUB-TRANSFORMER

T901

SURROUND

REAR

CENTER

MAIN 2

SECTION

(Page 27)

ECO

POWER

VF VF

POWER SWITCH

Q902

D912

RECT

D907-910

SWITCH

Q904,905

RELAY

SWITCH

Q901

STANDBY

RELAY RY901

AC IN

SWITCH

Q907

SWITCH

Q906

–30V REG

Q903

— 31 — — 32 —

HCD-DR8AV/W900AV

DISPLAY SECTION

(Page 26)

MAIN 1 SECTION

MAIN 2 SECTION

RESET

DATA

CLOCK

WAKE UP

A +7V

A –7V

D671 – D675

X601

12.5MHz

73 78 79 22

X IN

X OUT

RESET

C DATA

C CLK

I WAKE UP

DISPLAY CONTROL

IC601

LED SEL

LED SCK

LED LATCH

LED DAT

SIRCS

D-SW

JOG A JOG B

VOLUME A VOLUME B

Q602

S701

VOLUME

LED POWER

CLK

STB

DATA

SWITCH

SERIAL

PARALLEL

CONVERTER

IC604

P10 P11 P12 P13 P14 P15

D632 D635 D637

D700

P1 P2

19 20

5 7 8

9 10 11

D611 D614 D616 D618 D621 D623 D625 D627 D604 D606

D641 D631 D636 D638 D612 D613 D617 D620 D619 D624 D626 D605 D607

S691

6

LED5V

S702

JOG

Q603

Q601 SWITCH

LED POWER

SWITCH

REMOTE

CONTROL

RECIEVE

IC602

OPEN

ROTARY

ENCODER

ROTARY

ENCODER

LED5V

3 4 5

2 8

(Page 27)

(Page 30, 32)

POWER SECTION

MAIN 1 SECTION

(Page 26)

MIC–SIG

SPE–ANA

LINE IN

REC IN

REC LEVEL

SPEANA

IC603

REC LEVEL

F06 F05 F04 F02 F01

S601-604,606-615

KEY 0

KEY 1

KEY 2

KEY 3

KEY 4

DAILY LED

REC LED LED-EC0

GR-1 GR-15 GR-16

74 75 77

43 28 27

12 13 14 16 17

21 20 19 18 17 16

ALL BAND

BPF 4 BPF 3 BPF 2 BPF 1 BPF 0

SEG-1

45 67

FLUORESCENT INDICATOR TUBE

GR-2 14

42,40

FL601

KEY

Q608 – Q610

DRIVER

S617-620,641-647,672-674

S625-630,632-637

S651-659,676-679,681-683

S661-666

EVER5V

LED SWITCH

Q605 – Q607

D601 – D603

— 33 — — 34 —

HCD-DR8AV/W900AV

(

)

2.5V

APPROX 200m Vp-p (PLAY)

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.

Note:

• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/ specified.

•

: internal component.

• C : panel designation.

Note:

The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.

• U : B+ Line.

• V : B– Line.

• H : adjustment for repair.

• Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions.

• Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances.

• Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F : FM g : VIDEO/MD E : PB (DECK A) d : PB (DECK B) G : REC (DECK B) J : CD c : digital out I : PHONO

• Abbreviation CND : Canadian model AUS : Australian model EA : Saudi Arabia model MX : Mexican model SP : Singapore model AR : Argentina model

W or less unless otherwise

Note:

Les composants identifiés par une marque ! sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro spécifié.

Waveforms – BD SECTION –

16.9MHz

IC101 ^¶ XTAI

(PLAY)

IC101 %¡ RF AC

APPROX 500mVp-p

IC101 $¡ TE

IC101 #ª FE

7.5µsec

IC101 @§ MDP

PLAY

3.1Vp-p

1.2Vp-p

2.4Vp-p

2.5V

– MAIN (2/5) Section –

5.5Vp-p

16MHz

IC501 !£ X-OUT

5.2Vp-p

32.768kHz

IC501 !¡ XC-OUT

– FL Section –

3.4Vp-p

12.5MHz

IC601 &™ X-OUT

For printed wiring boards.

Note:

• X : parts extracted from the component side.

•

• b : Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

• Indication of transistor

: Through hole.

: internal component.

These are omitted

— 35 — — 36 —

HCD-DR8AV/W900AV

7-3. PRINTED WIRING BOARD BD SECTION

• Refer to page 19 for Circuit Boards Location.

(VC)

(RP)

(AGCCON)

(FE)

(TE)

(FF1)

(Page 42)

— 37 — — 38 —

+ 64 hidden pages