SONY HCD VX880AV Service Manual

HCD-VX880AV

SERVICE MANUAL

HCD-VX880AV is the Amplifier, Video CD player, Tape Deck and Tuner section in MHC-VX880A V.

Model Name Using Similar Mechanism NEW

CD

SECTION

T APE DECK

SECTION

Mechanism Type CDM38LH-26BD36L Base Unit Type BU-26BD36L Optical Pick-up Type KSS-213D/Q-NP Model Name Using Similar Mechanism HTC-5550 T ape Transport Mechanism Type TCM-230AWR2

Chinese Model

SPECIFICATIONS

— Continued on next page —

MICROFILM

MINI Hi-Fi COMPONENT SYSTEM

1

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.

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

SAFETY-RELATED COMPONENT WARNING !!

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

2

TABLE OF CONTENTS

1. SERVICING NOTES ...................................................4

2. GENERAL ..................................................................10

3. DISASSEMBLY

3-1. Loading Panel ..................................................................... 12

3-2. Front Panel .......................................................................... 12

3-3. Cassette Lid and Tape Mechanism......................................13

3-4. CD SW Board and Panel Board.......................................... 13

3-5. Disc Tray............................................................................. 14

4. MECHANICAL ADJUSTMENTS............................ 15

5. ELECTRICAL ADJUSTMENTS ............................. 15

6. DIAGRAMS

6-1. Circuit Boards Location ...................................................... 20

6-2. Block Diagrams

• CD Section ....................................................................... 21

• Video Section...................................................................22

• Deck Section .................................................................... 23

• Main Section .................................................................... 24

• Power Section .................................................................. 25

• Display Section ................................................................ 26

6-3. Printed Wiring Board – BD Section –................................. 28

6-4. Schematic Diagram – BD Section – ................................... 29

6-5. Schematic Diagram – Deck Section – ................................ 30

6-6. Printed Wiring Board – Deck Section –.............................. 31

6-7. Printed Wiring Board – Video Section – ............................. 32

6-8. Schematic Diagram – Video (1/2) Section – ....................... 33

6-9. Schematic Diagram – Video (2/2) Section – ....................... 34

6-10. Schematic Diagram – Main (1/4) Section – .................... 35

6-11. Schematic Diagram – Main (2/4) Section – .................... 36

6-12. Schematic Diagram – Main (3/4) Section – .................... 37

6-13. Schematic Diagram – Main (4/4) Section – .................... 38

6-14. Printed Wiring Board – Main Section –........................... 39

6-15. Printed Wiring Board – Panel Section – .......................... 40

6-16. Schematic Diagram – Panel (1/2) Section – ....................41

6-17. Schematic Diagram – Panel (2/2) Section – ....................42

6-18. Printed Wiring Board – Leaf SW Section –..................... 43

6-19. Schematic Diagram – Leaf SW Section – ....................... 43

6-20. Schematic Diagram – Surround Section – ....................... 44

6-21. Printed Wiring Board – Surround Section – .................... 44

6-22. Schematic Diagram – Power Section –............................ 44

6-23. Printed Wiring Board – Power Section –......................... 44

6-24. Schematic Diagram – Trans Section –............................. 45

6-25. Printed Wiring Board – Trans Section – .......................... 45

6-26. Schematic Diagram – Front Amp Section – ....................46

6-27. Printed Wiring Board – Front Amp Section –.................. 47

6-28. Schematic Diagram – CD Motor Section – .....................48

6-29. Printed Wiring Board – CD Motor Section – ..................49

6-30. IC Block Diagrams .......................................................... 50

6-31. IC Pin Functions .............................................................. 52

7. EXPLODED VIEWS

7-1. Case Section........................................................................ 63

7-2. Chassis Section ................................................................... 64

7-3. Front Panel Section ............................................................. 65

7-4. CD Mechanism Deck Section-1 (CDM38LH-26BD36L) ..66 7-5. CD Mechanism Deck Section-2 (CDM38LH-26BD36L) ..67

7-6. Base Unit Section (BU-26BD36L) .....................................68

7-7. TC Mechanism Section-1 (TCM230AWR2) ......................69

7-8. TC Mechanism Section-2 (TCM230AWR2) ......................70

8. ELECTRICAL PARTS LIST ....................................71

3

SECTION 1

SERVICING NOTES

HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF

1

Remove the Case.

3

Pull-out the disc tray.

2

Turn the cam to the direction

of arrow.

Note for Installation (ROTARY ENCODER)

BU cam

Groove

Note:When attaching the Base unit, Insert the section A into the groove of BU cam.

Section A

Note:When attaching the BU cam, engage the Rotary encoder switch as shown in the figure.

CD-TEXT

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.

4

SELF-DIAGNOSIS

3

This unit is equipped with a self-diagnosis function. The function is used for diagnosing the conditions of the circuits of the VIDEO board. The circuits can be determined if normal or abnormal by the lighting of D502 of the VIDEO board.

Lighting of D502

When lit : Operates normally Blinks repeatedly : The circuit may be faulty.

[VIDEO BOARD] (SIDE B)

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.

31

50

IC505

51

CN502

130

80

D502

CN501

100

81

SL501

SL502

SL50

5

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 p , ENTER/NEXT , 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 optical 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 CD 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 power cord is plugged in and out.

Procedure:

1. Press three buttons p , ENTER/NEXT , 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 optical pick-up.

Procedure:

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

2. Press three buttons p , ENTER/NEXT , and § 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 ) + button is pressed, the optical pick-up moves outside. When – 0 button is pressed, it

moves inside.

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

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

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

Note:

• Always move the optical 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

• 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/NEXT 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 p , ENTER/NEXT , 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 0 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” V alue increases like 1, 2, 3 ... if rotating 0 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.

6

AMS Test Mode

H

g

H

g

3

• 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 unit ON.

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

3. Press the three buttons p , ENTER/NEXT , 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 SYNC 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.

Note: The p button of CD section will become effective and the aging of CD section will stop sometime, if the buttons described in step 3

are not pressed simultaneously. In that case, press ^ button and operate the CD section.

SELF-DIAGNOSIS

This model has the self-diagnosis function for the VIDEO and AUDIO decoder sections. Immediately after the power on, the self-diagnosis function searches each operation of IC’s around the mechanism control microcomputer (IC701). The results can be checked by D502 of the VIDEO board.

Oscilloscope (Waveform) Symptom

No error

Li

ht

L

MPEG decoder (IC506)

L

2 time blinkin

error

MPEG decoder (IC506) or

3 time blinkin

L

DRAM (IC507) error

[VIDEO BOARD] (SIDE B)

(GND)

CT503 VIDEO

Frequency

Adjustment

Check point

(27 MHz)

31

50

51

IC505

80

130

CN501

100

81

SL501

SL502

CN502

D502

SL50

7

Aging Mode

This mode can be used for operation check of tape deck section.

• If an error occurred: The aging operation stops and display then status.

• If no error occurs: The aging operation continues repeatedly.

• The sequence during the aging mode is following as below.

• If an error occurred, stop display that step.

Aging mode sequence:

Procedure:

1. Load the tapes into the decks A and B respectively.

2. Press the FUNCTION button to select the function “CD”.

3. Press the PLAY MODE button to set the “ALL DISCS” mode,

and press the REPEAT button to “REPEAT” off.

4. Press three buttons of p , ENTER/NEXT , and DISC SKIP/

EX-CHANGE simultaneously.

5. The aging mode is activated, if the indicator of disc tray number

on the fluorescent indicator tube is blinking.

6. To exit from the aging mode, press the 1/u button to turn the

power OFF and operate the cold reset. (Refer to the “MC Cold Reset”)

Rewind the tape A and B

“TAPE A AG-1”

Shut off

FWD piay the tape A

“TAPE A AG-2”

2 mimutes

Fast forward the tape A

“TAPE A AG-3”

Shut off or 20 seconds

REV play the tape A

“TAPE A AG-4”

2 minutes

Rewind the tape A

“TAPE A AG-5”

Shut off

FWD play the tape B

“TAPE B AG-2”

2 minutes

Fast forward the tape B

“TAPE B AG-3”

Shut off or 20 seconds

REV play the tape B

“TAPE B AG-4”

2 minutes

Rewind the tape B

“TAPE B AG-5”

Shut off

Note: “T APE * AG_*” is display of each step.

8

VIDEO CD COLOR-BARS MODE

On this mode, the data of the color-bars signal as a picture signal and the 1kHz sine wave signal as a sound signal are output by the mechanism control microcomputer (IC505) for video CD signal check. When measurement of the voltage and waveform on the VIDEO board, perform it in this mode. For reference, the color-bars signal can be observed at J502 (VIDEO OUT) and the sound signal can be observed at J101 (VIDEO/MD (AUDIO) OUT) using an oscilloscope.

1. Connect the lead wire to both ends of the land of SL503 of the VIDEO board.

2. Turn the power on. Press FUNCTION button to select CD.

3. After 2 or 3 seconds later, connect the lead wire.

4. After measuring, remove the lead wire connected.

[VIDEO BOARD] (SIDE B)

3150

51

30

CN502

SL503

SL502

80

81

SL501

IC505

1

100

CN501

9

SECTION 2

GENERAL

Front Panel

44 4345

321

64

63

62 61

60 56575859

55

51525354

47484950

46

42 39

4041 3738

36

4567

15 14 13

20

22 21

8

9 10 11

12

1819 17 16

23 24

3435

LOCATION OF PARTS AND CONTROLS

1 1/u button and indicator 2 DEMO (ST ANDBY) button 3 DISC 1 button and indicator 4 DISC 2 button and indicator 5 DISC 3 button and indicator 6 DISC SKIP/EX–CHANGE button 7 § (Eject) button 8 SYNC BASS H indicator 9 SVIDEO/VCD indicator 10 PBC indicator 11 PBC OFF indicator 12 SYNC BASS L indicator 13 TUNER/BAND button 14 ^ (CD) button and indicator 15 p button 16 SYNC BASS button 17 SYNC EQ button 18 KARAOKE PON/MPX button 19 CD NON-STOP button and indicator 20 REC P AUSE/START button and

indicator

21 DSP button and indicator

22 DBFB button 23 HI-DUB button 24 CD SYNC button 25 PHONES jack 26 VOLUME knob 27 ENTER/NEXT button and indicator 28 ) + button and indicator 29 PRO LOGIC button and indicator 30 JOG/0x) dial and indicator 31 GROOVE button and indicator 32 0 – button and indicator 33 DVD 5.1 CH button 34 CD FLASH button 35 CD LOOP button 36 MIC 2 jack 37 TIMER SELECT button and indicator 38 CLOCK/TIME SET button 39 MIC 1 jack 40 SPECTRUM ANALYZER button 41 DISPLAY button 42 MIC LEVEL knob 43 REPEA T/STEREO/MONO button

10

25

26

27

28

29

30

33 32 31

44 PLAY MODE/DOLBY NR button 45 EDIT DIRECTION TUNER MEMORY

button

46 ECHO LEVEL knob 47 P FILE MEMORY button 48 GEQ CONTROL button 49 FILE SELECT button 50 EFFECT button 51 NEXT button 52 PREV button 53 RETURN button 54 SELECT button 55 ( (TAPE B) button and indicator 56 9 (TAPE B) button and indicator 57 ( (TAPE A) button and indicator 58 9 (TAPE A) button and indicator 59 FUNCTION button 60 SYNC EQ indicator 61 Remote sensor 62 EFFECT indicator 63 Display Window 64 Disc tray

This section is extracted from instruction manual.

11

SECTION 3

)

DISASSEMBLY

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

3-1. LOADING PANEL

Claws

3

Loading panel

assembly

2

Pull-out the disc tray.

1

Turn the cam to the direction

of arrow.

3-2. FRONT PANEL

2

Screw (BVTT 3x6)

6

Screw (BVTP 3x10)

0

Front panel

4

8

(CN131)

Lead wire

Screw (BVTT 3x8)

9

(CN132)

Flat type wire

5

(BVTP3x10)

!¢

Screw (BVTP 3x8)

!™

Flat type wire

(CN502)

Flat type wire

Screw

7

Flat type wire

(CN141)

!∞

Video board

!¡

(CN501)

Lead wire

1

Screw (BVTT 3x6)

Flat type wire

!£

Two screws (BVTP 3x8)

12

3

Screw (BVTT 3x8

3-3. CASSETTE LID AND TAPE MECHANISM

6

T ension spring

4

Cassette holder (L)

assembly

2

Release

9

T ape mechanism

8

Three screws

(BVTP2.6x8)

7

T wo screws

(BVTP2.6x8)

Note for installation

Portion

B

3

Cassette holder (R)

assembly

Portion

A

3-4. CD SW BOARD AND PANEL BOARD

3

CD SW board

4

Knob (Jog)

1

Release

Portion

B

5

T ension spring

1

Three screws

(BVTP2.6x8)

2

Three screws

(BVTP2.6x8)

9

Three screws

(BVTP2.6x8)

Portion

8

Flat type wire

(CN601)

A

6

Nut

5

Knob (Vol)

7

Nut

!™

Panel board

0

Six screws

(BVTP2.6x8)

!¡

Four screws

(BVTP2.6x8)

13

3-5. DISC TRAY

(Perform after removing the front panel.) Note:When installing the Disc tray, pull around the flat type wire to

3

Flat type wire (8 core)

4

Two claws

2

Pull-out the disc tray.

5

Remove the disc tray.

pass through the claw

Claw

A

and claw B, as shown in the figure.

Claw

B

1

Turn the cam the

direction of arrow.

14

SECTION 4

MECHANICAL ADJUSTMENTS

SECTION 5

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 FWD

back tension REV

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 damagnetizer.

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.

Signal

P-4-A100

WS-48B

P-4-L300

10 kHz, –10 dB

3 kHz, 0 dB

315 Hz, 0 dB

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

Note: Perform this adjustments for both decks.

Procedure:

1. Mode : Playback

Used forT ape

Azimuth Adjustment

Tape Speed Adjustment

Level Adjustment

test tape P-4-A100 (10kHz, –10dB)

set

MD OUT (J101)

level meter

+ –

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 B)

)

test tape P-4-A100 (10kHz, –10dB)

oscilloscope MD OUT (J101)

set

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 DUB button is pressed.

Procedure:

With the power turned ON, press the p button, ENTER/NEXT button, and DISC 3 button simultaneously. (The “CD TYPE INDICA T OR” on the fluorescent display tube will blink while in the test mode.) T o exit the test mode, press the 1/u button.

Waveform of oscilloscope

in phase 45

good

°

135

90

°

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)

Reverse Foward

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

2. Press the ^ button of deck B.

3. Press the HI 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 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 (J101)

level meter

16

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:

J101 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 (AUDIO) IN (J101) 315Hz 50 mV (–23.8 dB)

blank tape CS-123

set

attenuator

600

Ω

IC301

Record Level (L CH) RV301

CN303

RV351 Record Level (R CH)

56

43

42

29

28

15

14

1

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. (After recording, press the – 0 button without stopping will return to the position where recording was started.)

1. Press FUNCTION button to select VIDEO. (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

VIDEO (AUDIO) IN (J101)

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. (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

5. Confirm playback the signal recorded in step 2 become adjust-

Adjustment level: The playback output of 10 kHz level difference

Adjustment Location: AUDIO board

Adjustment Location:

[AUDIO BOARD] (Conductor Side)

recorded position

set

MD OUT (J101)

level meter

ment level as follows. If these levels do not adjustment level, adjust the R V341 (L-CH) and R V441 (R-CH) on the AUDIO board to repeat steps 3 and 4.

against 315 Hz reference should be ± 1.0 dB.

RV341(Lch),RV441(Rch) Record Bias

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

4. Mode: Playback

recorded position

set

MD OUT (J101)

level meter

5. Confirm playback the signal recorded in step 2 become adjustment level as follows. If these levels do not adjustment level, adjust the R V301 (L-CH) and R V351 (R-CH) on the MAIN board to repeat steps 3 and 4.

Adjustment level:

J301 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

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 ± 0.3 Vp-p

S Curve Check

oscilloscope

BD board

TP (FE) TP (VC)

+ –

Adjustment Location: BD board

Procedure :

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

2. Connect TP (FE1) and TP (VC), 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 ^ 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

A

Within 4.0

B

±

1.0 Vp-p

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.

Adjustment Location: BD board

E-F Balance (Traverse) Check

oscilloscope

BD board

TP (TE) TP (VC)

+ –

Adjustment Location: BD board

Procedure :

1. Connect oscilloscpe to test point TP (TE) and TP (VC) on BD board.

2. Short-circuit SL502 of the video board to GND.

3. Turned Power switch on. Press FUNCTION button to select CD.

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

5. Press the PLAY MODE/DOLBY NR button. (The tracking servo and the sledding servo are turned OFF .)

6. Check the level B of the oscilliscope's waveform and the A (DC voltage) of the center of the Traverse waveform. Confirm the following : A/B x 100 = less than ± 22%

Traverse waveform

0V

Center of the waveform

B

A (DC voltage)

level : 1.3 ± 0.6 Vp-p

7. Press the PLAY MODE/DOLBY NR button. (The tracking servo and sledding servo are turned ON.) Confirm the C (DC voltage) is almost equal to the A (DC voltage) is step 7.

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 5track.

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.

18

Traverse waveform

0V

Tracking servo Sled servo OFF

Tracking servo Sled servo ON

8. Desolder the short-land (SL502) short-circuited at step 2.

Adjustment Location: BD board

C (DC voltage)

Adjustment Location :

3

[BD BOARD] (SIDE B)

TP (RF)

TP (VC)

TP (AGCCON)

IC102

TP (FE)

VIDEO SECTION

IC103

TP (TE)

IC101

Frequency adjustment

1. Connect the frequency counter to check point (27MHz) of the VIDEO board.

2. Adjust CT503 of the VIDEO board so that the frequency counter read 27MHz ± 80Hz at STOP condition.

Adjustment Location :

[VIDEO BOARD] (SIDE B)

(GND)

CT503 VIDEO

Frequency

Adjustment

31

Check point

(27 MHz)

50

51

130

IC505

80

CN501

100

81

SL501

SL502

VIDEO board (27 MHz)

frequency counter

+ –

CN502

D502

SL50

19

6-1. CIRCUIT BOARDS LOCATION

CD SW board

PANEL board

SECTION 6

DIAGRAMS

5V power board

VIDEO board

TUNER unit

TRANS board

SENSOR board

MAIN board

TUNER unit is supplied as the assembled block.

MOTOR (TURN) board

CONNECTOR board

BD board

MOTOR (SLIDE) board

20

3CH AMP board

LEAF SW board

FRONT AMP board

AUDIO board

6-2. BLOCK DIAGRAMS

– CD SECTION –

OPTICAL PICK-UP BLOCK

(KSS-213D/Q-NP)

DETECTOR

E

A

C

D

B

F

C

D

B

VCC

VC

HCD-VX880AV

IC421

CD DIGITAL

IC101

IC103

RF AMP

A

5

C

7

D

8

B

6

RF

SUMMING

AMP

FOCUS

ERROR

AMP

RF EQ

AMP

RFD

RFI

FE

16

17

14

INTEGRATOR

DIGITAL SERVO

DIGITAL SIGNAL PROCESSOR

RF AC

50

ASYI

49

ASYO

48

ASYMMETRY CORRECTION

DEMODULATOR

DIGITAL

PLL

EFM

32K RAM

REGISTER

SUB CODE

PROCESSOR

DATA BUS

ERROR

CORRECTOR

D/A

INTERFACE

DIGITAL

OUT

MD2

D OUT

PCM-D

BCLK

LRCK

C2PO

MUTE

63

D+5V

64

66

67

65

14

3

OPTICAL

1

OUT

DOUT

ADATA

BCLK

LRCK

C2PO

MUTE

LD

PD

TRACKING

COIL

FOCUS

COIL

LASER DIODE

LD

POWER

M102 SLED

MOTOR

M101

SPINDLE

MOTOR

E

F

LD

DRIVE

Q101

T+

T

F+

F

SD+

M

SD

SP+

M

SP

E

11

F

10

LD

3

PD

4

FOCUS/TRACKING COIL DRIVE

SPINDLE/SLED MOTOR DRIVE

12

11

14

13

17

18

15

16

IC102

APC LD

AMP

TRACKING

ERROR

AMP

5

6

2

3

24

23

25

27

TFDR

TRDR

FFDR

FRDR

SFDR

SRDR

BUFFER

21

VC

REF

LD ON

TE

13

DIGITAL

CLV

IC104

4

A+5V

(XTAL 33.8MHz)

MCK

2

CTRL1

SENS

DATA

XLT

CLK

SCOR

SUBQ

SQCK

SCLK

LPH

XRST

LD ON

• SIGNAL PATH

: CD

: VIDEO

A

VIDEO

SECTION

(Page 22)

CLOCK

12

VC

38

INTEGRATOR

VC

RFDC

43

FE

39

TE

41

CE

42

VC

SE

40

TFDR

31

TRDR

32

FFDR

33

FRDR

34

SFDR

29

SRDR

30

MDP

25

OP AMP

ANALOG SW

PWM

GENERATOR

TRACKING

PWM

GENERATOR

FOCUS

PWM

GENERATOR

SLED

PWM

GENERATOR

CONVERTER

22

A/D

CONTROL SIGNAL

BLOCK

SERVO

BLOCK

SERVO DSP

TRACKING

SERVO

FOCUS

SERVO

SLED

SERVO

DETECTOR

MIRR DFCT

FOK

GENERATOR

SERVO

AUTO

SEQUENCER

SERVO

INTERFACE

CPU

INTERFACE

XTAI

XTSL

SENS

DATA

XLAT

CLOK

SCOR

SQSO

SQCK

S STOP

SCLK

XRST

71

69

7

4

5

6

15

76

77

26

S101

LIMIT SW

8

82

MUTE

M701 TURN

M

MOTOR

M801

SLIDE

MOTOR

09

7 2

4

M

7

MOTOR DRIVER

OUT1 OUT2

MOTOR DRIVER

OUT2 OUT1

TURN

IC701

SLIDE

IC801

RIN

IN1 IN2

FIN

TABLE

SENSOR

IC702

3 6

S801

OPEN/CLOSE

2

10

DET

DISC

SENSOR

IC703

ROTARY

ENCODER

S811

Q701

T. SENS

DISC SENS

ENC 1 ENC 2 ENC 3

OPEN

TBL.L TBL.R

LOAD IN

LOAD OUT

C

MAIN

SECTION

(Page 24)

XRST

20

21 21

HCD-VX880AV

– VIDEO SECTION –

MCLK 33.8MHz

DIGITAL FILTER, D/A CONVERTER

IC509

A

CD

SECTION

(Page 21)

A DATA BCK LRCK

C2PO

LEVEL SHIFT

IC503

MPEG VIDEO/AUDIO DECODER,

VIDEO SIGNAL PROCESSOR

IC506

CD-DATA

180

CD-BCK

184

CD-LRCK

182

CD-C2PO

185

100,98,114,116,118,120,121,122,124

ADDRESS BUS

DATA BUS

CD-ROM

INTERFACE

CIRCUIT

MA0 – MA10

104,110,112,111,108,105,102,99,96,

A0 – A18

MPEG

SYSTEM

DECODER

D-RAM/ROM INTERFACE

MD0 – MD15

54,58,60,64,68,72,74,78,

76,73,70,66,62,59,56,53

MPEG AUDIO

DECODER

MPEG VIDEO

DECODER

D0 – D15

MCE

128

VIDEO

PROCESS

CIRCUIT

SD-RAS

MWE

82 86 85

AUDIO

INTERFACE

CIRCUIT

SD-CAS

SD-CSO

90

VDATA0 – 7

CPU INTERFACE

INT

RESET

13 16

DA-DATA

DA-BCK

DA-LRCK

DA-XCLK

SYS CLK

VCK-IN

HSYNC

VSYNC

161 167 166

169

178

150,152,154,155

142,143,145,148,

177 157

158

DATA

CLK

OSC

BUFFER

IC510

VIDEO FREQUENCY

CT503

(27MHz)

DATA

18

BCK

17

LRCK

19

768FSO

21

384FSO

20

MCKO

4

INPUT

INTERFACE

CIRCUIT

TIMING CONTROL/

CLOCK GENERATOR

XT2

X503

27MHz

XT1

DIGITAL FILTER,

NOISE SHAPER CIRCUIT

D/A

CONVERTER

MODE

CONTROL

MC

MD

9 724 1

8

R-CH

CD-L

C

MAIN

SECTION

LOW-PASS

FILER

VOUTL

VOUTR

14

11

LOW-PASS

FILER IC515

(Page 24)

• R CH: Same as L ch

ML

RSTB

10

PCL

4

DATA

3

CLK

1

HSYNC

20

VSYNC

19

D/A

V-B

V-G V-R

18 17 16

• SIGNAL PATH : CD : CHROMA : Y : VIDEO

21 – 24, 27 – 32,20

D-RAM

IC507

(Page 21)

A

CD

SECTION

(Page 24)

C

MAIN

SECTION

F

MAIN

SECTION

(Page 24)

A0 – A10

A0 – A10 BA

SENS DATA XLT CLK MUTE CTRL1 SCOR LD ON SUBQ SQCK

XRST

I2C CLK I2C DATA

A11

2,3,5,6,8,9,11,12,39,

19

40,42,43,45,46,48,49

RAS

WE

CAS

17 1516

D0 – D15

DQ0 – DQ15

HSY

28

VSY

27

VCLK

51

2

–

8 ,

10

NTB

22

D/A CONVERTER

IC511

YUV0 – 7

DIGITAL RGB ENCORDER

IC514

64 157

ROSD

GOSD

OSD

TIMING

CONTROL

Y/C

FILTER

BOSD

D/A

COUT

YOUT

VOUT

J301

S VIDEO OUT

37

45

39

C

Y

1

3

4

2

J302

VIDEO OUT

DF LATCH

NT/PAL

TEST LED

XOUT

22

77

27MHz

VD0 – VD7

21

NTSC

S501

93

+5V

73

SYSTEM

SELECT

D502 (SELF DIAGNOSIS)

AUTO

PAL

A0 – A10

12 – 5, 27, 26, 23

A0 – A10

CS

18

PROGRAM ROM

IC508

D0 – D7

13 – 15, 17 – 21

O0 – O7

A11–A17

25, 4, 28, 29, 3, 2, 30

A11 – A17

CE

22

CLK1

33

DATA1O

31

20

CL680 HINT

24

8830 RESET

CD MECHANISM CONTROLLER

1

SENSE

3

DSP DATA

4

DSP LATCH

5

DSP CLK

10

DSP MUTE

11

CTRL1

18

SCOR

28

LD ON

36

SUBQ DATA

37

SUBQ CLK

12

XRESET

29

I2C/RX

30

I2C/TX

DEVICE RESET

IC505

NT/PAL OUT

XIN

1315

09

22

X501

10MHz

– DECK SECTION –

HCD-VX880AV

HP101 PB HEAD (DECK A)

REC/PB HEAD

(DECK B)

HRPE101

ERASE HEAD

PB A/B

MS OUT

MAIN SECTION

PB L

LM ON/OFF

NORM/HIGH

NR ON/OFF

REC/PB/PASS

REC L

BIAS ON/OFF RM ON/OFF

ALC ON/OFF

RELAY

CAPM CNT1

CAPM CNT2

CAP M H / L

A SHUT

B SHUT

A PLAY

B PLAY

A HALF

B

MAIN

SECTION

(Page 24)

17

2

DOLBY NR

RECOUT

C

32 33

S1008 B CrO

19

B 120/70

PAS

BIAS SW

M

2

DOL

DOLBY TYPE B

M1

CAPSTAN

MOTOR

28

27

M

MS

26

PB OUT

LM ON/

OFF

NORM/

HIGH

NR ON/

OFF

PB

RIN

BIAS ON/OFF

RM ON/OFF

ALC ON/OFF

CAP MOTOR CONTROL Q336-343

CONTROL

RV1002

NORMAL

SPEED

Q1001

40

25

18

23

24

44

20 22 15

RV1001

HIGH

SPEED

+5V

SWITCH

Q335

REEL

DETECT

IC1001

REEL

DETECT

IC1002

S1001 (A PLAY)

S1002 (B PLAY)

S1004 A CrO

RV311

4

PLAYBACK

LEVEL

DECK A

RV301

PLAYBACK

LEVEL

DECK B

RV341

REC BIAS

BIAS OSC

T621, Q621, 622

IC611

L

R

L

R

X

R CH

3

P

ERASE BIAS

IC601

1

IC602

R

REC/PB

16

PB-A/B

A IN

48

B IN

46

RV301

REC LEVEL

+7.5V

Q623

EQIN

38

EQOUT

36

A 120/70

70

120

DOLBY NR IC301

39

• R CH : Same as L ch

• SIGNAL PATH : PB (DECK A) : PB (DECK B) : REC (DECK B)

S1003

(A HALF)

+5V

S1005

09

• PLUNGER SOLENOID is supplied as the MECHANICAL BLOCK ASSY.

A DECK/ B DECK PLUNGER

MAIN SECTION

TRIGGER MOTOR CONTROL Q331-334

(REC A)

S1006

(B HALF)

S1009

(REC B)

B HALF/REC A/REC B

B TRIG

A TRIG

23 23

HCD-VX880AV

– MAIN SECTION –

VIDEO/IN

(AUDIO) L

MD IN L

MD/VIDEO

(AUDIO) OUT L

FRONT

DVD

REAR

SW

CENTER

B HALF/REC A/REC B

B

DECK

SECTION

(Page 23)

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

C

CD

SECTION

(Page 21)

IC712(1/2)

J711

MIC 1

J712

MIC 2

J101

J102

PB L

REC L

RELAY A SHUT B SHUT

A HALF A PLAY B PLAY

PB A / B

NORM/HIGH

BIAS ON/OFF

RM ON/OFF

NR ON/OFF

REC/PB PASS

CAPM CNT1 CAPM CNT2

ALC ON/OFF

LM ON/OFF

CAP M H/L

A TRG

B TRG

MS OUT

ST L

ST-DOUT

ST-DIN

STEREO

TUNED

ST CE

ST-MUTE

ST-CLK

L CH

TBL. L

TBL. R

SCOR

TRAY SENS

HOLD

SENS

X RST

CD DATA

DISC SENS

X LAT

OUT-OPEN

ENC-1 ENC-2 ENC-3

LD IN

LD OUT

IC711

ECHO PROCESSOR

LPF 1 IN LPF 2 OUT

2 9

1

76

RV712

MIC

LEVEL

68 69 64 66 67 65

60

V

MD DVD

TC TU

CD

KEY IN2

IC712(2/2)

SELECT SWITCH

MICON INTERFACE

34

33 32

1 2 3

41

2

R-CH

1 2 3

L+R

IC101(1/2)

EQ

DOUT2

59

30

EQ

AMP

58

57

Lch

42

23

PL-CLK

24

PL-DATA PL-LAT

25

100

TC RELAY A SHUT

91

90

B SHUT

89

B HALF

88

A HALF

87

A PLAY SW

86

B PLAY SW

84

PB A/B

83

EQ H//N BIAS

82 81

REC MUTE

80

NR ON/OFF

R/PB PASS

79

CAPM CNT1

75

CAPM CNT2

74

85

ALC TC MUTE

78

76

CAP M H/L

73

A TRG

72

B TRG

77

AMS IN

38

493-LAT

47

493-DATA

48

493-CLK

ST DIN

54 50

STEREO

TUNED

51 52

ST CE

49

ST MUTE

53

ST DOUT ST CLK

55

63

TBL L

65

TBL R

SCOR

19

T SENS

61

HOLD

57

SENS

56

XRST

59

CD DATA

35

DISC SENS

60

XLT

58

OUT OPEN

71

ENC1

70

ENC2/DISC-LED

69

ENC3/UP-SW

68

LOAD IN

67

LOAD OUT

66

80

10

16

4

TRIM

MCU INTERFACE DATA SCK REQ

74

77

79

76

1

11

15

5

IC201

SOUND PROCESSOR

IC101(2/2)

VOLUME

VOL

242322

IC501

MASTER CONTROL

38 39

SW

17

REAR L-IN

9

CENTER IN

3

DBFB SWITCH Q112,113

BASS FRQ.

DBFB H/L

LINE MUTE

F RELAY

ST-BY LED/CLOCK OUT

WAKE UP

IIC DATA

IIC CLK

TIMER LED

RESET

AC CUT

(CHECK)

X-OUT

X-IN

XC-IN

XC-OUT

RY-SW

POWER

CD POWER

STK MUTE

HP-MUTE

PROTECTOR

Q111

44

18

39

30 29

26

12

22

13

15

10

11

36

93

27

Lch

36

72

37

J191

SUPER

WOOFER

MUTE

Q114

MUTE

Q191

7 6

3

RESET

SWITCH

Q501

3

RESET

IC502

1

D503

+5.6V (STBY)

X613

16MHz

X601

32.768KHz

2

5

1

MUTE

Q281, 282

MUTE SW

Q503

MUTE SW

Q502

2

I

C DATA

2

I

C CLK

SPE SIG

WAKE UP STANDBY LED

IIC DATA IIC CLK

TIMER LED RESET

FRONT L IN

FRONT L-OUT

REAR IN

CENTER IN

FRONT RELAY

RY-SW

POWER ON/OFF

CD POWER

STK MUTE

HP MUTE

SPEAKER PROTECT IN

F

VIDEO

SECTION

(Page 22)

E

DISPLAY SECTION

(Page 26)

D

POWER

SECTION

(Page 25)

• R CH: Same as L ch

• SIGNAL PATH : FM : CD : PB : REC : VIDEO/MD

09

24

– POWER SECTION –

D

MAIN

SECTION

(Page 24)

IC506 +3.3V

RY-SW

FRONT L-IN

STK MUTE

FRONT RELAY

AC DET

SPEAKER PROTECT IN

PROLOGIC RELAY

REAR L-IN

CENTER-IN

IC504

+3.3V/REG

POWER ON/OFF

VREF

+5.6V (STBY)

RECTIFIER

+5V (STBY)

(DISPLAY)

D502

20 21

–VH

PROTECT OUT

12 13

THERMAL DET

Q1023, 1024

18 17

+VL –VL

D509

IC801

2CH

15

16

–VH SUPP

Q831

+VH BUFF

Q821

Q822

MUTE

Q825, 826

IC1001 (1/2)

1CH

8

67

IC1001 (2/2)

3CH

20

CCC

14

+VL BUFF

Q1021

Q1022 MUTE

JW909

RDS D+5V UN SW

+5V (LED)

(DISPLAY)

D+5V UNREG

CDM D+5V SW

SWITCH

Q907

SWITCH

Q904, 905

+VH

Lch

Rch

CD D+5V (SW)

RECTIFIER

D918

+5V OUT

Q906

OVER LOAD DET

Q801

PROTECT SW

Q828 – 830

OVER LOAD DET

Q1001

Rch

OVER LOAD DET

Q1001

CD A+5V (SW)

PROTECT

Q832, 827

Rch

5V-POWER BOARD

IC101

42

+5V/REG

1

+5V OUT

Q915

A+7V

IC905

31

+5V/REG

Q916

IC901

31

REG

+7V REG

Q901,902,903

A–7V

REAR L OUT

OVER LOAD DETECT

CENTER OUT

+VH

–VH

+VL

–VL

AC DET

–7V REG

Q951,952,953

+VH

Q421 Q411

MUTE

RECT

D881

RECT D883

RECTIFIER D931, 932

RECT

D901-904

RELAY DRIVE

Q881

SWITCH

Q882

RY881

T951

POWER TRANSFORMER

AC1

AC2

AC2 AC1

AC3

+VH

A-7V

X6

RELAY DRIVE

SWITCH

RELAY DRIVE

SWITCH

Q883

Q884

Q885

Q886

FAN DET

FAN MOTOR

SWITCH

Q431, 432

RY882

RY883

TM801

Rch R-ch

Rch

Lch

RY-SW

Rch

TM802

FRONT

L-ch

J701

PHONES

SURROUND

REAR L-ch

REAR R-ch

CENTER

HCD-VX880AV

ST A+10V

CD POWER

09

+10V OUT

Q910

IC904

31

12V REG

A+10V

CD MOTOR +7V

TC MOTOR +12V

+10V REG

Q913

SWITCH

Q914

CD MOTOR +12V

IC902

31

+7V REG

IC903

31

+12V REG

RECT

D908-911

AC4

AC IN

25 25

HCD-VX880AV

– DISPLAY SECTION –

IIC DATA

IIC CLK

RESET

X601

12.5MHz

78 79

73

72

70

2

C DATA

I

2

C CLK

I

RESET

XOUT

XIN

DISPLAY CONTROL

IC601

L/P SCK

LED LA

L/P DAT

L SEL

SIRCS

S LOW (F01)

BPF1 (F02)

BPF2 BPF3 BPF4

ALL B (L+R)

JOG A JOG B

KEY 0

KEY 3

IC604

1

|

5

•

3 4 5

7

1 16 17 18 19

20

21

2

8

11

14

13

SWITCH

15

LED

7

•

10

•

11

•

17

•

19

|

23

LED

CONTROL

Q603

REMOTE CONTROL RECEIVER

IC602

S601 (JOG)

ROTARY

ENCODER

KEY

MATRIX

PANEL LED

Q601,602

+5V (LED)

E

MAIN

SECTION

(Page 24)

WAKE UP

SPE SIG

STANDBY LED

VF

D804 ECO

22

4

6

WAKE UP

SEG1-SEG22

LINE IN

REC IN

GR2-GR12

33 - 40, 42 - 4446 - 67

FLUORESCENT INDICATOR TUBE

SPEANA BPF FILTER

IC603

FL601

F01 F02 F04 F05 F06 L+R

GR1, GR13-GR18

27 - 32, 45

IND BUFF

Q607-613

S LOW

17

BPF1

16

BPF2

14

BPF3

13

BPF4

12

ALLB

11

VOL A VOL B

9

10

VF

ROTARY

ENCODER

S602

VOLUME

TIMER LED

09

LED SWITCH

Q605

D635

TIMER SELECT

+5V (STBY)

26

HCD-VX880AV

0.15µsec

4.8Vp-p

45µsec

5.0Vp-p

16.7ms

5.0Vp-p

H

3.5Vp-p

36nsec

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.

• 2 : nonflammable resistor.

• 1 : fusible resistor.

• 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) m : CHROMA n : Y o : VIDEO J : CD c : digital out

4

W or less unless otherwise

Note:

WAVEFORMS – CD SECTION –

1

IC101 %º RFAC

2

APPROX 500mVp-p

IC101 $¡ TE

3

APPROX 200mVp-p

IC101 #ª FE

4

7.5µsec

IC101 @∞ MDP

1.3Vp-p

2.6Vp-p

2.5V

– VIDEO SECTION –

1

0.47µsec

IC503 4 (CD-LRCK)

(CD Play mode)

2

0.47µsec

IC503 8 (CD-LRCK)

3

12.5µsec

IC503 !º (CD-BCK)

4

10MHz

IC505 !£ (XOUT)

5

10MHz

IC502 !∞ (XIN)

6

7.5µsec

IC511 1 (CLK)

4.8Vp-p

4.0Vp-p

3.0Vp-p

4.8Vp-p

7

IC511 8 (OSC IN)

8

IC511 !∞!§!¶!• (CD Stop mode)

9

IC514 @¶ (VSY)

0

IC514 @• (HSY)

!¡

IC514 2-8, !º (YUVO-YUV7)

!™

2.0Vp-p

H

J301 4 (YOUT)

!£

H

J301 3 (COUT)

!¢

37µsec

IC509 4 (MCKO)

!∞

IC509 @º (384FSO)

!§

30nsec

IC509 @¡ (768FSO)

59µsec

1.8Vp-p

4.6Vp-p

4.8Vp-p

4.2Vp-p

– MAIN (3/4) SECTION –

1

5.2Vp-p

32.768kHz

IC501 !¡ XC-OUT

2

5.5Vp-p

16MHz

IC501 !£ X-OUT

– PANEL (1/2) SECTION –

1

3.4Vp-p

12.5MHz

IC601 &™ X OUT

For printed wiring boards.

Note:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

®

•

: Through hole.

• b : Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

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

• Indication of transistor

C

Q

C

EB

These are omitted

EB

27 27