Sony HCD-LX9AV, HCD-LX10AV, HCD-LX90AV Service manual

HCD-LX9AV/LX10AV/LX90AV

SERVICE MANUAL

• HCD-LX9AV/LX10AV/LX90AV are the Amplifier, CD player, Tape Deck adn Tuner section in LBT-LX9AV/LX10AV/LX90AV

Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol ; are trademarks of Dolby Laboratories Licensing Corporation.

Photo: HCD-LX9AV

Section

Tape deck

Section

US Model

HCD-LX90AV

AEP Model

UK Model

HCD-LX9AV

E Model

Australian Model

HCD-LX10AV

Model Name Using Similar Mechanism HCD-DR8AV/

W900AV

CD Mechanism Type CDM37M-5BD32L

Base Unit Name BU-5BD32L

Optical Pick-up Name KSS-213D/Q-NP

Model Name Using Similar Mechanism HCD-DR8AV/

W900AV

Tape Transport Mechanism Type TCM-230PWR1

SPECIFICATIONS

COMPACT HI-FI STEREO SYSTEM

— Continued on next page —

SAFETY-RELATED COMPONENT WARNING!!

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.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ! LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

TABLE OF CONTENTS

SECTION 1

SERVICE NOTES

1. SERVICING NOTES .................................................. 3

2. GENERAL ...................................................................... 5

3. DISASSEMBLY............................................................. 8

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

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

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

7. DIAGRAMS

7-1. Circuit Board Locations.................................................... 20

7-2. Block Diagrams

Display/Power Section...................................................... 21

Main Section ..................................................................... 22

Display/Power Section...................................................... 23

7-3. Printed Wiring Board – BD Board –................................. 24

7-4. Schematic Diagram – BD Board – .................................. 25

7-5. Printed Wiring Boards – CD MOTOR Section –............. 26

7-6. Schematic Diagram – CD MOTOR Section –................. 27

7-7. Printed Wiring Board – AUDIO Board –......................... 28

7-8. Schematic Diagram – AUDIO Board – ........................... 29

7-9. Printed Wiring Board – LEAF SW Board – .................... 30

7-10.Schematic Diagram – LEAF SW Board –....................... 30

7-11.Printed Wiring Board – MAIN Board – .......................... 31

7-12.Schematic Diagram – MAIN Board (1/3) – .................... 32

7-13.Schematic Diagram – MAIN Board (2/3) – .................... 33

7-14.Schematic Diagram – MAIN Board (3/3) – .................... 34

7-15.Printed Wiring Board – PANEL FL Board –................... 36

7-16.Schematic Diagram – PANEL FL Board – ...................... 37

7-17.Printed Wiring Board – PANEL VR Board – .................. 38

7-18.Schematic Diagram – PANEL VR Board – ..................... 39

7-19.Printed Wiring Boards – TC-A/TC-B/CD-L/

CD-L2/CD-R/CD-R2 Boards – ........................................ 40

7-20.Schematic Diagram – TC-A/TC-B/CD-L/

CD-L2/CD-R/CD-R2 Boards – ........................................ 41

7-21.Printed Wiring Boards – FRONT INPUT/

HEADPHONE/MIC Boards – .......................................... 42

7-22.Schematic Diagram – FRONT INPUT/

HEADPHONE/MIC Boards – .......................................... 43

7-23.Printed Wiring Board – PA Board – ................................ 44

7-24.Schematic Diagram – PA Board – ................................... 45

7-25.Printed Wiring Board – SURROUND Board – ............... 46

7-26.Schematic Diagram – SURROUND Board –.................. 47

7-27.Printed Wiring Boards

– TRANS/SUB TRANS Boards – ................................... 48

7-28.Schematic Diagram – TRANS/SUB TRANS Boards – .. 49

SAFETY CHECK-OUT

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 AC 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)

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)

8. EXPLODED VIEWS ................................................... 55

9. ELECTRICAL PARTS LIST ................................... 63

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

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

The following caution label is located inside the unit.

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.

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

Flexible Circuit Board Repairing

• Keep the temperature of the 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.

CAUTION

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

LOCATION OF CONTROLS – Front Panel –

SECTION 2

GENERAL

234

Photo: HCD-LX9AV

qa qs

qfqgqhqj

1 ?/1 (POWER) button 2 DAILY button

REC button

SLEEP button c/CLOCK SET button

3 TUNER/BAND button

TUNING +/– button

ENTER/NEXT button

TUNER MEMORY button

STEREO/MONO button

TUNING MODE button

PTY button

4 Display 5 v/B/V/b button 6 SYNC EQ button

SYNC BASS button

SURROUND button

MIX GUITAR/KARAOKE button

7 FUNCTION button 8 VOLUME control 9 PHONES jack 0 DECK B operating button

g button G button x button m button M button X button z REC button HI SPEED DUB button

CD SYNC button

qa . AMS > control qs CD operating button

G X button x button m button M button DISC SKIP button

qd VIDEO 2 INPUT jack qf PLAY MODE button

REPEAT button

qg DECK B qh Z A EJECT

Z B EJECT

qj DECK A qk DISC1-5 button ql LOOP button

FLASH button

NON-STOP button

EDIT button

w; SUPPER WOOFER MODE button

MIC LEVEL control

GUITAR LEVEL contro

wa DECK A operating button

g button G button x button m button M button

DIRECTION button

DOLBY NR button

ws MIC MIX jack

GUITAR jackl

wd EFFECT button

GROOVE button

SUPER WOOFER button

wf POWER SAVE/DEMO (STAND BY) button

DISPLAY button

SPECTRUM ANALYZER button

– Rear Panel –

1 qs qa 0

9 8 7

Photo: HCD-LX9AV

1 DJ MIX jack 2 ANTENNA terminal 3 SURROUND SPEAKER terminal 4 FRONT SPEAKER terminal 5 CD DIGITAL OUT terminal 6 DVD INPUT FRONT jack

DVD INPUT REAR jack

DVD INPUT WOOFER jack

DVD INPUT CENTER jack

7 DVD INPUT VIDEO jack 8 VIDEO OUT jack 9 VIDEO 1 jack 0 MD IN/OUT jack qa PHONO IN jack qs WOOFER OUT jack

This section is extracted from instruction manual.

SECTION 3

)

DISASSEMBLY

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

3-1. UPPER CASE

1 Three screws

(CASE3 TP2)

5 Upper case

(Remove in the direction of the arrows)

4Three screws

(BVTT 3 × 6)

3 Four screws (BVTP3 × 8

2 Three screws (CASE3 TP2)

3-2. FRONT PANEL SECTION

Two screws

(BVTP3 × 8)

Lug

Wire (flat type) (17 core) (CN304)

Wire (flat type) (13 core) (CN431)

Wire (flat type) (15 core) (CN303)

Two connectors

(CN452, 702)

Connector (CN802)

Screw

(BVTP3 × 8)

Two lugs

Screw (BVTP3 × 8)

Claw

Front panel section (Be careful in has claws)

Four screws

(BVTP3 × 8)

3-3. TAPE MECHANISM DECK (TCM-230PWR1)

Two screws

(BVTP3 × 8)

Two screws

(BVTP3 × 8)

Tape mechanism deck

(TCM-230PWR1)

3-4. MAIN BOARD

Wire (flat type)

(19 core) (CN411)

Eleven screws

(BVTP3 × 8)

Back panel

Connector

(CN102)

Wire (flat type) (CN441)

Main board

Two screws

(BVTP3 × 8)

Five screws

(BVTP3 × 8)

Two screws

(BVTP3 × 8)

Connector

(CN903)

LX10AV Model

Connector

(CN412)

Two connector

(CN803, CN804)

3-5. CD MECHANISM DECK (CDM37M-5BD32L)

Eeven screws

(BVTP3 × 8)

Five screws

(BVTP3 × 8)

Wire (flat type)

(19 core) (CN411)

Connector

(CN412)

Wire (flat type) (CN441)

Open the two

cable clamps

Two screws

(BVTP3 × 8)

Five screws

(BVTP3 × 8)

Two screws

(BVTP3 × 8)

Connector

(CN903)

LX10AV Model

Two screws

(BVTP3 × 8)

CD mechanism deck

(CDM37M-5BD32L)

Five screws

(BVTP3 × 8)

3-6. BASE UNIT (BU-5BD32L)

3 Base unit

(BU-5BD32L)

2 Boss

1 BU fitting screw

3-7. 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.

1 Two screws (BVTP3 ¥ 8)

2 Two brackets (BU)

3 Step screw

4 Disc table

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 c/CLOCK SET , ENTER , and ?/1 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 button to turn the set ON.

2. Press LOOP button and ?/1 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 power cord is plugged in and out.

Procedure:

1. Press three buttons c/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 button to turn the set ON.

2. Press three buttons c/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 c/CLOCK SET , ENTER , and ?/1 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 button to turn the set ON.

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

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

4. Press ENTER and ?/1 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 c/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 button is pressed, “K”value increases.

However, 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.

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 button to turn the set ON.

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

3. Press the three buttons c/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 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 c/CLOCK SET , ENTER , and DISC 4 button simultaneously.

7. Aging starts.

8. To end aging, press the ?/1 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.

• 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 button to turn the set ON.

2. Press the three buttons c/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 mechanical errors, press the PLAY MODE button. When checking errors after chucking, press the

REPEAT button to switch the display.

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

6. To erase the error history, perform COLD reset.

(Press the three buttons c/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

* : Invalid

• 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) * : Invalid

SECTION 5

MECHANICAL ADJUSTMENTS

SECTION 6

ELECTRICAL ADJUSTMENTS

Precaution

1. Clean the following parts with a denatured alcoholmoistened 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 R-CH.

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

L-CH peak

screw position

R-CH peak

so that outputs match within 1 dB of peak.

output

within

level

1 dB

L-CH peak

R-CH peak

within 1dB

screw position

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

90°

135°

180°

wrong

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

Adjustment Location: Playback Head (Deck A)

Record/Playback/Erase Head (Deck B)

Procedure:

With the power turned ON, press the c/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 button.

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

2. Press the H 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

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

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 (Lch) RV301

RV351 Record Level (Rch)

IC301

1 3

Record Level Adjustment (Deck B)

Procedure:

INTRODUCTION

When set to the test mode performed in Tape 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 m 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 z REC button, and then press the H 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

When set to the test mode performed in Tape 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 m 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 z REC button, and then press the H button to start recording.

3. Mode: Record

4. Mode: Playback

5. Confirm playback the signal recorded in step 2 become adjustment level as follows.

recorded position

set

MD OUT

level meter

If these levels do not adjustment level, adjust the RV341 (LCH) and RV441 (R-CH) on the AUDIO board to repeat steps 3 and 4.

Adjustment level: The playback output of 10 kHz level difference

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 adjustment level as follows.

recorded position

set

MD OUT

level meter

If these levels do not adjustment level, adjust the RV301 (LCH) and RV351 (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

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 button to turn the set ON.

4. With the disc (YEDS-18) loaded, press the HX 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 button to turn the unit ON.

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

4. Press the HX 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 sweep 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 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

SECTION 7

DIAGRAMS

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS (In addition to this, the necessary note is printed in each block)

Note on Printed Wiring Board:

• X : parts extracted from the component side.

•

• b : Pattern from the side which enables seeing.

Caution: Pattern face side: Parts on the pattern face side seen from (Side B) the pattern face are indicated. Parts face side: Parts on the parts face side seen from (Side A) the parts face are indicated.

• Indication of transisitor.

: internal component.

These are omitted.

Note on Schematic Diagram:

• 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.

•

• 2 : nonflammable resistor.

• 5 : fusible resistor.

• C : panel designation.

• U : B+ Line.

• V : B – Line.

• H : adjustment for repair.

• Voltages are taken with a VOM (Input impedance 10 MΩ).

• Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

• Abbreviation

: internal component.

The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.

Voltage variations may be noted due to normal production tolerances.

F : TUNER (FM/AM) E : PLAYBACK (DECK A) d : PLAYBACK (DECK B) G : RECORD J : CD PLAY (ANALOG OUT) c : CD PLAY (DIGITAL OUT) N : MIC INPUT

AUS : Australian model AR : Argentine model EA : Saudi Arabia model MY : Malaysia model MX : Mexican model SP : Singapore model

W or less unless otherwise

7-1. CIRCUIT BOARDS LOCATION

SUB TRANS board

TRANS board

MIC board

TC-A board

CD-L board

PANEL FL board

PANEL VR board

CD-R board

TUNER UNIT (FM/AM)

SURROUND board

MAIN board

PA board

HEADPHONE board

TC-B board

FRONT INPUT board

CD MOTOR board

LEAF SW board

TABLE SENSOR board

BD boar

AUDIO board

LED board

HCD-LX9AV/LX10AV/LX90AV

7-2. BLOCK DIAGRAMS

TUNER/CD/DECK SECTION

LX10AV:EA MODEL

COAXIAL FM 75Ω

ANTENNA

OPTICAL PICK-UP

(KSS-213D/Q-NP)

FM 75Ω

BLOCK

FOCUS

COIL

TRACKING

COIL

• RCH is omitted

• Signal Path

TUNER UNIT

ST-L

ST-R

ST DOUT

ST DIN

ST CLK

STCE

TUNED

STEREO

MUTE

RDS DATA

RDS INT

D+5V

GND

F-

F+

T-

T+

M102

SLED

MOTOR

M101

SPINDLE

MOTOR

Q101

DRIVE

: FM

: CD

: DIGITAL OUT

: PB (DECK A)

: PB (DECK B)

: REC (DECK B)

R-CH

TUNED

STEREO

ST MUTE

RDS DATA

RDS INT

LX9AV MODEL

ST-L

RF AMP

IC103

RFO

RFI

HOLD SW

IC102

MOTOR/COIL DRIVE

CH1RI

CH1RO

CH1FI

CH1FO

CH2RI

CH2RO

CH2FI

CH2FO

CH3RO

CH3FO

CH4INS

CH4RO

CH4FO

MUTE

MAIN

SECTION

(Page 22)

13TE

22LD ON

23CH3RI

24CH3FI

DIGITAL SERVO

DIGITAL SIGNAL PROC.

D/A CONV.

IC101

D OUT

RFAC

RFDC

XLON

FRDR

FFDR

TRDR

TFDR

SRDR

SFDR

MDP

L OUT

XLAT

SQCK

SCLK

SCOR

SQSO

SSTP

XTAI

XRST

DECK-A

HP101

HEAD

R-CH

DECK-B

HRPE101

REC/PB HEAD

R-CH

ERASE

HEAD

IC781

CD-L

S101 LIMIT

IN SW

DIGITAL

OUT

R-CH

75R OUT

5DATA

7CLOK

67XTAO

X101

16.9344MHz

DIGITAL OUT

MAIN

SECTION

(Page 22)

OPTICAL

PB EQ

AMP

IC611

PB EQ

AMP

IC601

RV341

BIAS

REC

T621

L331,C332

BIAS TRAP

TUNED

STEREO

ST MUTE

RDS DATA

RDS INT

RV311

RV301

BIAS

OSC

Q621,622

PB(L)

LEVEL

PB(L)

LEVEL

REC/PB SWITCH

IC602

Q623

MASTER CONTROL

IC501(1/3)

ST DOUT

TC RELAY

ST DIN

ST CLK

ST CE

TUNED

REC MUTE

STEREO

NR ON/OFF

ST MUTE

R/PB PAS

RDS DATA

TC MUTE

RDS INT

CD DATA

CD CLK

XLT

SQ CLK

SCOR

SQ DATA

CAP M H/L 76

CAP M CONT2

CAP M CONT1

XRST

HOLD

DISC LED

R CH

+7V

PB A/B

EQ H/N

ALC

BIAS

AMS IN

A PLAY

B PLAY

A HALF

B HALF

A SHUT

B SHUT

A TRIG

B TRIG

TBL-L

TBL-R

T SENS

100

REC

B NORM/CROM/METAL

LM ON/OFF

A120/70

MS OUT

Q335

DRIVE

Q333,334

Q331,332

RV1002

NORM S

RV1001 HIGH S

A TRIG DRIVE

B TRIG DRIVE

Q1001

MOTOR

CONT

DECK A/B SELECT

PB/REC EQ AMP

REC

NORM

IC201

MOTOR

DRIVE

IC202

DISC

SENSOR

LED DRIVE

Q201

BIAS

CROM

M201

TURN

MOTOR

D201 DISC

120

IC301

RV301

REC(L) LEVEL

REC

DOLBY

PB A/B

NORM/HIGH

ALC ON/OFF

DOL

PAS

BIAS ON/OFF

RM ON/OFF

NR ON/OFF

REC /PB/PASS

Q336-339

CAP MOTOR

SPEED CONT

Q340-343

CAP MOTOR

+5V

TC REC-L

IC1001

A REEL

DET

IC1002

B REEL

DET

TC PB-L

+5V

A TRG M+

B TRG M+

CAPSTAN

MOTOR

S1004

A 120/70

S1008

B 120/70

S1001

A PLAY

S1002

B PLAY

S1003

A HALF

S1006

B HALF

S1005 REC A

S1009 REC B

MAIN

SECTION

(Page 22)

MAIN

SECTION

(Page 22)

ENC3/UP SW

S201

UP SW

2121

HCD-LX9AV/LX10AV/LX90AV

MAIN SECTION

TUNER

SECTION

(Page 21)

SECTION

(Page 21)

DECK

SECTION

(Page 21)

DECK

SECTION

PHONO IN

VIDEO 1 IN

DVD

INPUT

CD OUT

CD IN

(AUDIO)

MD IN

MD OUT

AUDIO

VIDEO

VIDEO 1 IN

(VIDEO)

VIDEO IN

(Page 21)

FRONT

REAR

CENTER

WOOFER

DVD

VIDEO

OUT

LX9AV/LX10AV:MX/LX90AV

MIX

VIDEO 2

INPUT

MODEL

J705

J701

J804

J703

J702

R CH

MUTE Q805

LX10AV MODEL

INPUT SELECT/

GRAPHIC EQ CONT/

ELECTRICAL VOLUME

ST-L

LX10AV: E,EA,MY,S,AR,AUS

CD-L

TC REC-L

TC PB-L

PHONO AMP

IC601

JW704

VIDEO SELECT

IC191

IN3

IN1

IN2

VD OUT

AUDIO SELECT

IC181

V MUTE

FUNC SEL045FUNC SEL1

DATA

CLK

LAT

DATA

PL DATA

CLK

LAT

PL CLK

PL LAT

DOLBY

SURROUND PROCESSOR

IC201

VR SW IN

LT IN

SL IN

C IN

SW IN

DATA

SCK

REQ

SL OUT

C OUT

SW OUT

DATA

CLOCK

CLK

DATA

CLOCK

LATCH

LAT

INB2

IND2

RECA2

INC2

INA2

INE2

RECB2

INF2

KEYIN2

SWNF

DATA

CLOCK

LATCH

IC101

OUT2

BB A2

BB B2

L+R

37IN2

2MIC IN

LINE MUTE

Q115

MUTE CONT

Q803

SW MODE

MUTE Q113

Q111

MASTER CONTROL

IC501(2/3)

DBFB CONT

Q112

DBFB H/L

PROTECT

POWER AMP

IC901

PROTRCT

Q431,432 Q437,439

MUTE Q281

MUTE Q271

OVER LOAD

DETECT

Q801

D803

D401

HP MUTE

R-CH

DC DET

Q433,434

OVER HEAT

DETECT

Q831,832

MUTE CONT

Q833

32.768kHz

TH831

X501

XC IN

+7V

XC OUT

X502

16MHz

X IN

X OUT

F RELAY

RELAY DRIVE

Q401,402

RELAY DRIVE

Q403,407

RELAY DRIVE

Q404,406

MUTE CONT

Q804

REAR RELAY

RY401

RY402

RY403

D807

MUTE Q731

HP IN

FAN DRIVE

Q961,962

R CH

SPA SIG

MIC SIG

TA MUTE

FAN

TM401

TM402

J704

• RCH is omitted

• Signal Path

: FM

: CD

: PB (DECK A)

: PB (DECK B)

: REC (DECK B)

HEADPHONS

FRONT

SPEAKER

REAR SURROUND

SPEAKER

CENTER

SPEAKER

WOOFER

OUT

DISPLAY SECTION

(Page 23)

DISPLAY SECTION

(Page 23)

POWER

SECTION

(Page 23)

J803

: VIDEO

2222

DISPLAY/POWER SECTION

HCD-LX9AV/LX10AV/LX90AV

MAIN

SECTION

(Page 22)

MAIN

SECTION

(Page 22)

MAIN

SECTION

(Page 22)

J801

MIC 1

J802

MIC 2

SPA SIG

MIC SIG

TA MUTE

MASTER CONTROL

IC501(3/3)

IIC DATA

WAKE UP

CD POWER

POWER

AC CUT

STK POWER

STBY RELAY

IC850

RV750

MIC

VOL

IC852

RV751

LX10AV/LX90AV MODEL

IIC CLK

RESET

MUTE CONT

Q802

RESET

SWITCH

Q801

STBY

SWITCH

Q803,804

DISPLAY CONTROL

IC601

EVER +5V

BPF0

BPF1

BPF2

BPF3

BPF4

ALL BAND

KEY0

KEY1

KEY2

KEY3

KEY4

DSW

VOL A

VOL B

JOG A

JOG B

SIRCS

I2C DATA

I2CCLOCK

WAKE UP

RESET

SEG1

SEG23

GR2

GR14

GR1

GR15

GR16

ECO LED

DAILY LED

REC LED

LED SCK

LED LATCH

XOUT

F1 F2

JW605

Q605-607 77

5LED DATA

7LED SEL

XIN

X601

12.5MHz

68VKK

SPEANA

BPF

IC603

LX9AV ONLY

S601-604, 605

S606-615

FUCTION

KEY

S641-647 S651-658

FUCTION

KEY

S621-624,626-630

S633,634,636,637,659

FUCTION

KEY

S617-619,654-659

S676-682

FUCTION

KEY

S620,632,635

S651-653

FUCTION

KEY

S691

DOOR

S701

VOLUME

S701

CD JOG

IC702

EVR +5V

REMOTE

IC801

RESET

CONTROL RECEIVER

D803

D805

JW606

LED

DRIVER

LED DRIVER

IC701

DATA

CLK

STB

Q601

FL601

FLOURESCENT

INDICATOR TUBE

LX10AV/LX90AV

MODEL

GRID BUFF

Q608-610

GRID BUFF

Q608

D601-603

D631,632,635-638,641,700

. 7

P16

LED +B

SWITCH

Q602,603

LED +5V

A+7V

A-7V

LX9AV MODEL

LX10AV/LX90AV

D604-607,611-613 614

D616-621,623-627

MODEL

D671-677

ST +10V

PL A+10V

CD M+7V

FAN +B

TC M+12V

EVER +5V

µCOM +B

CD A+5V SW

D+5V SW

AU D+5V

CD +5V

RDS D+5V UNSW

D+5V UNSW

LED +5V

AU +7V

ST A+7V

TC +7V

MIC +7V

LED +7V

AU -7V

ST A-7V

TC -7V

MIC -7V

LED -7V

LX9AV/LX90AV

MODEL

D802

LX10AV MODEL

JW904

LX10AV MODEL

JR910

JR907

Q914

LX10AV MODEL

JW229

CD +B SW

Q913

Q906

TUNER +B

SWITCH

Q931,932

IC933

+7V

REG

+B SW

Q911,912

+B SW

Q901,902

-B SW

Q903,904

D913

D931

D912

Q905

IC931

+10V

REG

Q834

JW807

JW808

D913

D833-836

D841-844

D832

D831

IC901

+5.6V

REG

-B SW Q902

IC932

+12V

REG

IC911

+5V

REG

+VL

IC901

+7V

REG

POWER

AMP

-VL

-VH

+VH

+VCC

IC951

-7V

REG

EVER +5V

DISPLAY VP(-35V)

-VCC

NEGATIVE

VOL REG

Q903

T951

MAIN TRANS

RELAY DRIVE

Q901

D902-905

D907-910

240V

230V

120V

RY901

F951

LX9AV/LX10AV: MX LX90AV MODEL

LX9AV/LX90AV MODEL

T901

SUB TRANS

LX10AV:AR,AUS,E,MY,SP

JW952

JW953

MODEL

S901

VOLTAGE

SELECTOR

240V

230V

120V

AC IN

FL OFF

Q907

Q906

Q904,905

2323

HCD-LX9AV/LX10AV/LX90AV

7-3. PRINTED WIRING BOARD – BD Board – • See page 20 for Circuit Boards Location.

)(

TP(GND)

TP(VC)

TP(RF)

(AGCCON)

TP(FE)

TP(TE)

TP(FE1)

31,,

)(

(Page 31)

31,,

• Semiconductor Location (Side A)

Ref. No. Location

Q101 C-3

KSS-213D/Q-NP

• Semiconductor Location (Side B)

Ref. No. Location

IC101 C-2 IC102 B-1 IC103 B-1

2424

7-4. SCHEMATIC DIAGRAM – BD Board – • See page 35 for Waveforms. • See page 50 for IC Block Diagrams.

HCD-LX9AV/LX10AV/LX90AV

(Page 33)

IC102

• Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : CD STOP ( ) : CD PLAY

The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.

2525

+ 57 hidden pages