Sony HCD-EA20 Service Manual

HCD-EA20

SERVICE MANUAL

Ver 1.0 2003.10

HCD-EA20 is the amplifier, D VD/CD and tuner section in DAV-EA20.

SPECIFICATIONS

Amplifier section

Stereo mode (rated) 25 W + 25 W (6 ohms at 1

kHz, THD 10 %)

Surround mode (reference)Front: 25 W + 25 W

Center*: 25 W Surround*: 25 W + 25 W (6 ohms at 1 kHz, THD 10 %) Subwoofer*: 50 W (8 ohms at 100 Hz, THD 10 %)

*Depending on the sound field settings and the source,

there may be no sound output.

Inputs VIDEO:

Sensitivity: 150 mV Impedance: 50 kilohms SAT: Sensitivity: 300 mV Impedance: 50 kilohms AUDIO IN: sensitivity: 150 mV Impedance: 50 kilohms

Outputs VIDEO (AUDIO OUT):

Voltage: 1 V Impedance: 1 kilohm

Phones Accepts low-and high-

impedance headphones.

DVD system

Laser Semiconductor laser

(DVD: λ = 650 nm) (CD: λ = 780 nm) Emission duration:

continuous Signal format system NTSC or NTSC/PAL Frequency response (at 2CH STEREO mode)

DVD (PCM): 2 Hz to 22

kHz (±1.0 dB)

CD: 2 Hz to 20 kHz (±1.0

dB) Harmonic distortion Less than 0.03 %

Tuner section

System PLL quartz-locked digital

synthesizer system FM tuner section Tuning range 87.5 – 108.0 MHz (50 kHz

step) Aerial FM wire aerial Aerial terminals 75 ohms, unbalanced Intermediate frequency 10.7 MHz AM tuner section Tuning range 531 – 1,602 kHz (with the

interval set at 9 kHz) Aerial AM loop aerial Intermediate frequency 450 kHz

AEP Model

UK Model

Model Name Using Similar Mechanism HCD-SA30 Mechanism T ype Optical Pick-up Name

Video section

Inputs Video: 1 Vp-p 75 ohms Outputs Video: 1 Vp-p 75 ohms

General

Power requirements 230 V AC, 50/60 Hz Power consumption 130 W (230 V AC)

Dimensions (approx.) 355 × 80 × 395 mm (w/h/d)

Mass (approx.) 6.4 kg Operating temperature 5°C to 35°C Operating humidity 5 % to 90 %

Design and specifications are subject to change without notice.

CDM77A-DVBU20 TDP022W

0.3 W (230 V AC) (at the Power Saving Mode)

incl. projecting parts

9-961-254-01

CD/DVD RECEIVER

Sony Corporation

Home Audio Company Published by Sony Engineering Corporation

HCD-EA20

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.

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.

Unleaded solder

Boards requiring use of unleaded solder are printed with the leadfree mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size.)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40°C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350°C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful!

• Strong viscosity Unleaded solder is more viscous (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc.

• Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder.

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.

HCD-EA20

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

2. GENERAL ·········································································· 7

3. DISASSEMBLY ································································ 9

3-1. CASE ··········································································· 10 3-2. FRONT PANEL SECTION ········································· 11 3-3. PANEL BOARD, STANDBY BOARD ······················· 11 3-4. UCOM BOARD··························································· 12 3-5. DMB03 BOARD·························································· 12 3-6. I/O BOARD ································································· 13 3-7. AMP BOARD, SUB TRANSFORMER BOARD······· 14 3-8. DVD MECHANISM (CDM77A-DVBU20) ··············· 15 3-9. TRAY (AU) ·································································· 15 3-10. MS-128 BOARD························································ 16 3-11. BASE UNIT ······························································· 16 3-12. OPTICAL PICK-UP (TDP022W) ····························· 17

4. TEST MODE···································································· 18

5. ELECTRICAL ADJUSTMENT ·································· 26

6. DIAGRAMS

6-1. CIRCUIT BOARDS LOCATION······························· 27 6-2. BLOCK DIAGRAMS – RF/SERVO SECTION – ······ 29

– VIDEO SECTION –················································· 30 – AUDIO SECTION –················································· 31 – AMP SECTION –·····················································32

– POWER SUPPLY SECTION –································ 33 6-3. PRINTED WIRING BOARD – RF SECTION –········ 34 6-4. SCHEMATIC DIAGRAM – RF SECTION –············· 35 6-5. PRINTED WIRING BOARD

– LOADING SECTION – ··········································· 36 6-6. SCHEMATIC DIAGRAM

– LOADING SECTION – ··········································· 36 6-7. PRINTED WIRING BOARD

– DMB SECTION (SIDE A) –···································· 37 6-8. PRINTED WIRING BOARD

– DMB SECTION (SIDE B) –···································· 38 6-9. SCHEMATIC DIAGRAM

– DMB SECTION (1/8) – ·········································· 39 6-10.SCHEMATIC DIAGRAM

– DMB SECTION (2/8) – ··········································· 40 6-11.SCHEMATIC DIAGRAM

– DMB SECTION (3/8) – ··········································· 41 6-12.SCHEMATIC DIAGRAM

– DMB SECTION (4/8) – ··········································· 42 6-13.SCHEMATIC DIAGRAM

– DMB SECTION (5/8) – ··········································· 43 6-14.SCHEMATIC DIAGRAM

– DMB SECTION (6/8) – ··········································· 44 6-15.SCHEMATIC DIAGRAM

– DMB SECTION (7/8) – ··········································· 45 6-16.SCHEMATIC DIAGRAM

– DMB SECTION (8/8) – ··········································· 46 6-17.PRINTED WIRING BOARD

– UCOM SECTION – ················································· 47 6-18.SCHEMATIC DIAGRAM

– UCOM SECTION – ················································· 48 6-19. PRINTED WIRING BOARD

– I/O SECTION –························································ 49 6-20.SCHEMATIC DIAGRAM

– I/O SECTION (1/2) – ··············································· 50 6-21.SCHEMATIC DIAGRAM

– I/O SECTION (2/2) – ··············································· 51

6-22.PRINTED WIRING BOARD

– AMP/SUB TRANSFORMER SECTION – ············· 52

6-23.SCHEMATIC DIAGRAM

– AMP/SUB TRANSFORMER SECTION (1/2) – ····53

6-24.SCHEMATIC DIAGRAM

– AMP/SUB TRANSFORMER SECTION (2/2) – ····54

6-25.PRINTED WIRING BOARD

– PANEL SECTION –················································· 55

6-26.SCHEMATIC DIAGRAM

– PANEL SECTION –················································· 56 6-27.IC BLOCK DIAGRAMS ············································ 59 6-28.IC PIN FUNCTION DESCRIPTION ························· 68

7. EXPLODED VIEWS

7-1. CASE SECTION························································· 80 7-2. FRONT PANEL SECTION·········································81 7-3. CHASSIS SECTION··················································· 82 7-4. DVD MECHANISM SECTION

(CDM77A-DVBU20)·················································· 83

8. ELECTRICAL PARTS LIST······································· 84

HCD-EA20

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.

JIG ON REPAIRING

When repairing this set, etc., connect the extension cable as the figure shown below.

• Service position of mechanism block

MODEL IDENTIFICATION

— BACK PANEL —

Part No.

Model

AEP, UK models Russian model

PARTS No.

4-249-697-0s 4-249-697-1s

J-2501-212-A (1mm/5P/L300)

MS-128 board

DVD mechanism section (CDM77A-DVBU20)

• Service position of UCOM board

HCD-EA20

UCOM board

J-2501-212-A (1mm/5P/L300)

• Service position of AMP board

J-2501-200-A (1mm/11P/L300)

J-2501-198-A (1mm/17P/L300)

AMP board

HCD-EA20

• Service position of DMB03 board

J-2501-167-A (1.25mm/17P/L300)

UCOM board

DMB03 board

J-2501-188-A (1mm/15P/L400)

UCOM board

J-2501-075-A (1mm/21P/L500)

Front Panel

SECTION 2

GENERAL

HCD-EA20

This section is extracted from instruction manual.

A "/1 (power) (21) B STANDBY indicator (21) C (remote sensor) (11) D Disc tray (21) E Front panel display (70) F VOLUME control (21, 62) G FUNCTION (21, 52, 53, 54)

Rear Panel

VIDEO/SAT

COAXIAL

VIDEO OUT

AUDIO OUT

VIDEO

AUDIO IN

S VIDEO

(DVD ONLY)

VIDEO

MONITOR OUT

AUDIO IN

H PHONES jack (21) I ./>, PRE V/ N EX T , PRESET –/+

(22, 23, 52, 54)

J x (stop) (22) K X (pause) (22) L H (play) (21) M A (open/close) (21)

FRONT R FRONT L

WOOFERCENTER

SURR R

SPEAKER

SURR L

A AM terminals (15) B VIDEO (ANALOGUE OUT) jacks (17) C VIDEO/SAT (ANALOGUE IN) jacks (17) D TV jacks (17)

E MONITOR OUT (VIDEO/S VIDEO) jacks

(17)

F SPEAKER jacks (12) G FM 75Ω COAXIAL jack (15)

HCD-EA20

Remote

123 456 7

8 9

10/0

L ./>, PREV/NEXT, TV CH –/+ ,

PRESET –/+ (22, 23, 51, 52, 53, 54)

M H PLAY/SELECT (21, 23, 28, 29, 30,

47)

N DVD TOP MENU/ALBUM– (23, 25, 26) O DVD DISPLAY (25, 26, 30, 32, 37, 38, 39,

44, 45)

P C/X/x/c/ENTER (23, 25, 26, 27, 28, 30,

32, 39, 44, 45, 46, 47, 52, 54)

Q DVD SETUP (47, 57) R "/1 (standby) (21, 52) S DISPLAY (34, 37, 53) T DDSG (43) U MUTING (22) V NIGHT MODE (43) W AUTO FORMAT DIRECT (41) X SOUND FIELD +/– (41, 42) Y Number buttons (23, 28, 32, 44, 46, 47,

51) Z FUNCTION (21, 52, 53, 54) wj TUNER/BAND (52, 53)

Note

This remote control glows in the dark. However, before glowing, the remote must be exposed to light for a while.

A TV [/1 (on/standby) (51) B SLEEP (56) C TV/VIDEO (51) D PLAY MODE (28, 29) E MENU (52, 54) F REPEAT/FM MODE (28, 30, 53) G CLEAR (28, 29, 30, 32) H AUDIO (39) I ANGLE (44) J SUBTITLE (45)

wk ENTER (51, 52) wl COMMAND MODE switch (11, 51) e; m/M// SLOW, TUNING –/+ (31,

52)

ez x STOP (23, 46) es X PAUSE (22) ed DVD MENU/ALBUM+ (23, 25, 26) ef O RETURN (23, 25, 26, 28, 32, 46, 47) eg DIMMER (56)

K VOL +/– (51, 53)

SECTION 3

DISASSEMBLY

• The equipment can be removed using the following procedure.

SET

CASE

HCD-EA20

FRONT PANEL SECTION

PANEL BOARD, STANDBY BOARD

UCOM BOARD

DMB03 BOARD

AMP BOARD, SUB TRANSFORMER BOARD

I/O BOARD

DVD MECHANISM (CDM77A-DVBU20)

TRAY (AU)

MS-128 BOARD BASE UNIT

OPTICAL PICK-UP

(TDP022W)

HCD-EA20

)

3-1. CASE

two screws (CASE 3 TP2)

case

two screws (CASE 3 TP2)

five screws (+BVTP3

3-2. FRONT PANEL SECTION

)

front panel section

two claws

connector (CN401)

HCD-EA20

3-3. PANEL BOARD, STANDBY BOARD

front panel assy

vol knob

nut

three screws (+BVTP3 × 8)

ire (flat type)

17core (CN601)

ire (flat type)

17core (CN801)

STANDBY board

chassis groun

PANEL board

five screws (BVTP2.6

two screws (BVTP2.6

HCD-EA20

3-4. UCOM BOARD

connector (CN651)

ire (flat type)

5core (CN654)

connector (CN652)

connector (CN653)

11core (CN621)

ire (flat type)

17core (CN601)

ire (flat type)

17core(CN631)

four screws (+BVTP3

ire (flat type)

UCOM board

3-5. DMB03 BOARD

two screws (+BVTP3

ire (flat type)

5core (CN611)

two screws

heat sink

connector (CN102)

(+BVTP3

ire (flat type)

29core (CN501)

DMB03 board

ire (flat type)

21core (CN107)

ire (flat type)

5core (CN101)

ire (flat type)

15core (CN105)

3-6. I/O BOARD

ire (flat type)

9core (CN102)

ire (flat type)

17core (CN101)

I/O board

connector (CN421)

DC fan

HCD-EA20

back panel

ire (flat type)

15core (CN103)

ire (flat type)

11core (CN104)

tuner unit

four screws (+BVTP3

two screws (+BVTP3

four screws (+BVTP3

two screws (+BVTP3

HCD-EA20

3-7. AMP BOARD, SUB TRANSFORMER BOARD

four screws

power transformer

(main) (T101)

five screws (+BVTP3

SUB TRANSFORMER board

connector (CN902)

connector (CN951)

power cord

two screws (sumitite 3

five screws (+BVTP3

AMP board

connector (CN401)

connector (CN651)

connector (CN652)

ire (flat type)

11core (CN952)

ire (flat type)

25core (CN302)

3-8. DVD MECHANISM (CDM77A-DVBU20)

two screws (+BVTP2.6 × 8)

ire (flat type)

29p (CN002)

cover

CD lid

two claws

three screws (sumitite 3 × 6)

5core (CN001)

DVD mechanism (CDM77A-DVBU20)

ire (flat type)

HCD-EA20

3-9. TRA Y (AU)

bottom side

two claws

tray (AU)

HCD-EA20

3-10. MS-128 BOARD

belt

MS-128 board

3-11. BASE UNIT

gear

puley

four claws

belt

chuck cam

two claws

claw

base unit

3-12. OPTICAL PICK-UP (TDP022W)

claw

holder (DVU1)

three insulators

HCD-EA20

three step screws (M)

flexible board

(CN003)

RF board

ire (flat type)

24p (CN001)

optical pick-up

(TDP022W)

HCD-EA20

SECTION 4

TEST MODE

[KEY TEST]

*Key check and volume check.

Procedure:

1. Press the POWER button to turn the set on.

2. To enter the test mode, press three buttons of x , A and FUNCTION simultaneously.

3. In the key check mode, the fluorecent indicator displays “KEY00 V OL0”. Each time a button is pressed, “KEY**” value increases. However, once a button is pressed, it is no longer taken into account.

4. “VOL*” value increases like 0, 1, 2, 3, ... if rotating the VOLUME knob clockwise, or it decreases like 0, 9, 8, 7, ... if rotating counter-clockwise.

5. To exit from this mode, press three buttons x , A and FUNCTION simultaneously.

[VERSION DISPLAY MODE]

*The software version is displayed.

Procedure:

1. Press three buttons of X , NEXT > and FUNCTION simultaneously.

2. The microcomputer version and destination are displayed.

3. Press the DISPLAY button on the remote commander. The STR version is displayed.

4. Press the DISPLAY button on the remote commander. The DVD version is displayed.

5. Each time the DISPLAY button on the remote commander is pressed, the display changes in the order of microcomputer version/destination, STR and DVD.

6. To exit from this mode, press the POWER button.

[DISPLA Y TEST MODE]

* Fluorescent segments are tested when this test is activated.

Procedure:

1. Press three buttons of X , . PREV and FUNCTION simultaneously.

2. All segments are turned on.

VCDJPEG

MP3 MULTIPGM

AUTO

ALBM

MONO

SHUF

STEREOREP 1 TUNED

3. When the DISPLAY button on the remote commander is pressed, all segments are turned off.

4. Press the DISPLAY button on the remote commander, the display will light up as follows and confirm the display.

MP3PGM

ALBM

SHUF REP TUNED

PBC

NTSCTRAKTITLE CHAP DDSG

NIGHTALBM

PBCTRAK CHAP NIGHT

dts

IIPRO LOGIC

DIGITAL

MUTING

kHz MHz

SLEEP

kHz

MUTING

[AMP TEST MODE]

* SOUND FIELD and volume function is tested.

Note: In advance of Amp test mode SOUND FIELD is set except AFD

AUTO.

Procedure:

1. Press three buttons of x , NEXT > and H simultaneously.

2. Every time the SOUND FIELD + or SOUND FIELD - button on the remote commander is pressed, the following items changes in the order as shown below.

“SW AP F2S” (Lch/Rch inputs are output to both FR ONT Lch/ Rch and SURR Lch/Rch.)

“SWAP F2CW” (Lch input is output to CENTER and Rch input is output to WOOFER.)

“SWAP FLL” (Lch or Rch input is output to all speakers.)

“EQ MIN” (Bass and treble equalizers are set to -6dB.)

“EQ MAX” (Bass and treble equalizers are set to +6dB.)

“SRAM CHECK” (Not for service)

3. In the case of headphone inserted, every time the SOUND FIELD + or SOUND FIELD - button on the remote commander is pressed, the following items changes in the order as shown below.

“HP 2CH”

“HP SURR”

4. Each time the DDSG button on the remote commander is pressed, DDSG will change to on or off.

5. Each time the NIGHT MODE button on the remote commander is pressed, NIGHT MODE will change to on or off.

6. When the V OLUME knob is turned clockwise or the VOL + button on the remote commander is pressed, volume goes from “VOLUME MIN” to “VOLUME 21”.

7. When the V OLUME knob is turned clockwise or the VOL + button on the remote commander is pressed again, volume goes to “VOLUME MAX”.

8. When the V OLUME knob is turned counter -clockwise or the VOL - button on the remote commander is pressed, volume goes to “VOLUME 21”.

9. When the V OLUME knob is turned counter -clockwise or the VOL - button on the remote commander is pressed again, volume goes to “VOLUME MIN”.

10. To exit from this mode, press the POWER button.

5. Press the DISPLAY button on the remote commander, the display will light up as follows and confirm the display.

AUTO

MONO

CDJPEG

STEREO1

NTSCTITLE DDSGALBM MULTI

PRO LOGIC

MHz

DIGITAL

SLEEP

6. Every pressing of the DISPLAY button on the remote commander turns on each segments in the same order.

7. To exit from this mode, press the POWER button.

[FORCED RESET MODE]

Procedure:

1. Press three buttons of X , FUNCTION and A simultaneously.

2. The set is turned off and microcomputer is reset.

[DVD REPEAT 5 TIMES LIMIT RELEASE MODE]

Procedure:

1. Set the FUNCTION to DVD.

2. Press three buttons of x , NEXT > and FUNCTION simultaneously.

3. DVD repeat 5 times limit is released.

HCD-EA20

[COLOR SYSTEM SELECTION]

* Color system can be changed to PAL or NTSC.

Procedure:

1. Set the FUNCTION to DVD.

2. Turn off the main power.

3. Press two buttons . PREV and PO WER simultaneously.

4. The color system is changed to PAL or NTSC.

[DISC TRA Y LOCK]

The disc tray lock function for the antitheft of an demonstration disc in the store is equipped.

Setting Procedure :

1. Press the POWER button to turn the set on.

2. Press two buttons of x and A simultaneously for five seconds.

3. The message “LOCKED” is displayed and the tray is locked.

Releasing Procedure :

1. Press two buttons of x and A simultaneously for five seconds again.

2. The message “UNLOCKED” is displayed and the tray is unlocked.

Note: When “LOCKED” is displayed, the tray lock is not released

by turning power on/off with the POWER button.

[DVD SERVICE MODE (OSD)]

Procedure:

1. Press the POWER button on the main unit or the ?/1 button on the remote commander to turn the set on.

2. Set the FUNCTION to DVD.

3. While pressing two buttons of x and A , turn the VOLUME knob clockwise to enter the test mode.

4. The message “SERVICE IN” is displayed on the display. The Test Mode Menu is displayed on the TV screen.

5. To execute each function, select the number on the remote commander.

6. See the following section for explanation in detail.

7. To exit from this mode, press the POWER button.

[INTERLACE FORCED SETTING MODE]

* The video signal format is forced to set to interlace.

Procedure:

1. Set the FUNCTION to DVD.

2. Press three buttons of x , . PREV and FUNCTION simultaneously.

3. The video signal format is forced to set to interlace.

[GENERAL DESCRIPTION]

The T est Mode allows you to make diagnosis and adjustment easily using the remote commander and monitor TV. The instructions, diagnostic results, etc. are given on the on-screen display (OSD).

[TEST DISC LIST]

Use the following test disc on test mode. TDV-520CSO (DVD-SL): PART No. J-2501-236-A LUV-P01 (CD): PART No. 4-999-032-01 TDV-540C (DVD-DL): PART No. J-2501-235-A

Note: Do not use exiting test disc for DVD.

[STARTING TEST MODE]

1. Press the POWER button to turn the power on, and set the function to DVD.

2. While pressing the x and A button, turn the VOLUME knob clockwise to enter the test mode.

3. It displays “SERVICE IN” on the fluorescent indicator tube, and displays the Test Mode Menu on the monitor screen as follows. (At the bottom of the menu screen, the model name and revision number are displayed)

Test Mode Menu

0. Syscon Diagnosis

1. Drive Auto Adjustment

2. Drive Manual Operation

3. Mecha Aging

4. Emergency History

5. Mecha Error History

6. Version Information

7. Video Level Adjustment Exit: POWER Key

Model :DAV-EA20 xx Revision :x.xx

4. To e xecute each function, select the desired menu and press its number on the remote commander (RM-SS200).

5. To release from test mode, press the PO WER button and turn the power off.

[OPERATING TEST MODE]

0. SYSCON DIAGNOSIS

The same contents as board detail check by serial interface can be checked from the remote commander operation. On the Test Mode Menu screen, press [10/0] key on the remote commander, and the following Check Menu will be displayed.

### Syscon Diagnosis ###

Check Menu

0. Quit

1. All

2. Version

3. EEPROM

4. GPIO

5. SD Bus

6. Video

0-0. Quit

Quit the Syscon Diagnosis and return to the Test Mode Menu.

HCD-EA20

0-1. All (All items continuous check)

This menu checks all diagnostic items continuously. Normally, all items are checked successively one after another automatically unless an error is found, but at a certain item that requires judgment through a visual check to the result, the following screen is displayed for the key entry.

• Example display

### Syscon Diagnosis ###

Diag All Check

No.2 Version

2-3. ROM Check Sum

Check Sum = 7BC6

Press NEXT Key to Continue Press PREV Key to Repeat

For the ROM Check, the check sum calculated by the Syscon is output, and therefore you must compare it with the specified value for confirmation. Following the message, press the [NEXT ] button to go to the next item, or press the [ PREV] button to repeat the same operation again. To quit the diagnosis and return to Check Menu screen, press the

[RETURN] key on the remote commander to display Check Menu.

• Error occurred

If an error occurred, the diagnosis is suspended and error is displayed. Press the diagnosis, or press the [ PREV] button to repeat the same check where an error occurred, or press the [NEXT ] button to continue the check from the item next to faulty item.

[RETURN] key on the remote commander to quit the

0-2-4. Model Type

Model name is displayed. (DAV-EA20)

0-2-5. Region

Model destination code is displayed. (2 digits number)

0-3. EEPROM Check

0-3-1. Sampling Check

EEPROM check at every 64 words. It compares read data with write data of each address. When there are discrepancies between two data, it displays error.

0-3-2. Detail Check

EEPROM check at every 1 word. It compares read data with write data of each address. When there are discrepancies between two data, it displays error.

0-4. GP I/O Check

Pull up/down setting check of the DVD system processor (IC207) pin 150, 151 and 154 (for clock setting port).

0-5. SD Bus Check

SD bus data check between DVD decoder (IC701) and D-RAM (IC706).

0-6. Video Check

Output the color bars for video level adjustment.

1. DRIVE AUTO ADJUSTMENT

On the Test Mode Menu screen, press the [1] key on the remote commander, and the Adjustment Menu will be displayed.

## Drive Auto Adjustment ##

Adjustment Menu

0. ALL

1. DVD-SL

2. CD

3. DVD-DL

General Description of Checking Method

Selecting 2 and subsequent items calls the submenu screen of each item. And selecting 2 and subsequent items executes respective menus and outputs the results. For the contents of each submenu, see “Check Items List” as below .

Check Items List:

0-2. Version

0-2-1. All 0-2-2. Revision 0-2-3. ROM Check Sum 0-2-4. Model Type 0-2-5. Region

0-3. EEPROM Check

0-3-1. Sampling Check

0-3-2. Detail Check 0-4. GP I/O Check 0-5. SD Bus Check 0-6. Video Check

0-2. Version

0-2-2. Revision

The revision number of ROM (IC206) that the program for the DVD system processor (IC207) is stored.

0-2-3. ROM Check Sum

Check sum is calculated. (4 digits hexadecimal number)

Exit: RETURN

Normally, DVD (dual layer) in this order . But, individual items can be adjusted for the case where adjustment is suspended due to an error. In this mode, the adjustment can be made easily through the operation following the message displayed on the screen. The disc used for adjustment must be the one specified for adjustment.

1-0. ALL

Press the [10/0] key on the remote commander, and the servo set data in EEPROM will be initialized. Then, 1. DVD-SL disc, 2. CD disc and 3. DVD-DL disc are adjusted in this order. Each time one disc was adjusted, it is ejected. Replace it with the specified disc following the message. You can finish the adjustment by pressing the [RETURN] button on the remote commander.

Note: During adjustment of each disc, the measurement for disc type judg-

[10/0] is selected to adjust DVD (single layer), CD and

ment is made. As automatic adjustment does not judge the disc type unlike conventional models, take care not to insert wrong type discs. Also, do not give a shock during adjustment.

HCD-EA20

1-1. DVD-SL (single layer)

Press the [1] key on the remote commander and insert a D VD single layer disc following the message. Then the adjustment will be made through the steps below , then adjusted values will be written to the EEPROM.

DVD Single Layer Disc Adjustment Steps:

1. Sled tilt reset

2. Disc check memory SL

3. Wait 300 msec

4. Set disc type SL

5. LD on

6. Spindle start

7. Wait 1 sec

8. Focus servo on 0

9. Auto track offset adjust

10. CLVA on

11. Wait 500 msec

12. Tracking on

13. Wait 1 sec

14. Sled on

15. Check CLV on

16. Auto LFO adjust

17. Auto focus offset adjust

18. Auto tilt position adjust

19. Auto focus gain adjust

20. Auto focus offset adjust

21. EQ boost adjust

22. Auto loop filter offset adjust

23. Auto track gain adjust Search Check

24. 32 track jump forward

25. 32 track jump reverse

26. 500 track jump forward

27. 500 track jump reverse

28. All servo stop

29. EEP copy loop filter offset

1-2. CD

Press the following the message. Then the adjustment will be made through the steps below , then adjusted values will be written to the EEPR OM.

CD Adjustment Steps

[2] key on the remote commander and insert a CD disc

1. Sled tilt rest

2. Disc check memory CD

3. Wait 500 msec

4. Set disc type CD

5. LD on

6. Spindle start

7. Wait 500 msec

8. Focus servo on 0

9. Auto track offset adjust

10. CLVA on

11. Wait 500 msec

12. Tracking on

13. (TC display start)

14. Wait 1 sec

15. Jitter display start

16. Sled ON

17. Check CLV on

18. Auto loop filter offset adjust

19. Auto focus offset adjust

20. Auto focus gain adjust

21. Auto focus offset adjust

22. EQ boost adjust

23. Auto LFO Adjust

24. Auto track gain adjust Search Check

25. 32Tj forward

26. 32Tj reverse

27. 500Tj forward

28. 500Tj reverse

29. All servo stop

1-3. DVD-DL (dual layer)

Press the layer disc following the message. Then the adjustment will be made through the steps below, then adjusted values will be written to the EEPROM.

DVD Dual Layer Disc Adjustment Steps:

Layer 1 Adjust

Layer 0 Adjust

[3] key on the remote commander and insert a DVD dual

1. Sled tilt reset

2. Disc check memory DL

3. Wait 500 msec

4. Set disc type DL

5. LD on

6. Spindle start

7. Wait 1 sec

8. Focus servo on 0

9. Auto track offset adjust

10. CLVA on

11. Wait 500 msec

12. Tracking on

13. Wait 500 msec

14. Sled on

15. Check CLV lock

16. Auto loop filter offset adjust, Auto focus adjust

17. Auto focus gain adjust

18. Auto focus offset adjust

19. EQ boost adjust

20. Auto loop filter offset adjust

21. Auto Track Gain Adjust Search Check

22. 32 track jump forward

23. 32 track jump reverse

24. 500 track jump forward

25. 500 track jump reverse

26. Focus jump (L1 t L0)

27. Auto track offset adjust L0

28. CLVA on

29. Wait 500 msec

30. Tracking on

31. Wait 500 msec

32. Sled on

33. Check CLV lock

34. Auto focus filter offset adjust

35. Auto Focus Adjust

36. Auto focus gain adjust

37. Auto focus offset adjust

38. EQ boost adjust

39. Auto Loop Filter Offset

40. Auto track gain adjust Search Check

41. 32 track jump forward

42. 32 track jump reverse

43. 500 track jump forward

44. 500 track jump reverse

Layer Jump Check

45. Layer jump (L0 t L1)

46. Layer jump (L1 t L0)

47. All servo stop

HCD-EA20

2. DRIVE MANUAL OPERATION

Note: This mode is used for design, and not used in service fundamen-

tally.

On the Test Mode Menu screen, press the [2] key on the remote commander, and the Operation Menu will be displayed. For the manual operation, each servo on/off control and adjustment can be executed manually.

## Drive Manual Operation ##

Operation Menu

1. Disc Type

2. Servo Control

3. Track/Layer Jump

4. Non EEPROM Write Adjust

5. EEPROM Write Adjust

6. Memory Check

7. Disc Check Memory

8. Error Rate Display

9. SACD Water Mark

Exit: RETURN

In using the manual operation menu, take care of the following points. These commands do not provide protection, thus requiring correct operation. The sector address or time code field is displayed when a disc is loaded.

Note:

1. Set correctly the disc type to be used on the Disc Type screen.

2. In case of an alarm, immediately press the x button to stop the servo operation, and press the POWER button to turn the po wer off.

2-1. Disc Type

Disc Type

Disc Type Select

1. Disc Type Auto Check

2. Set Disc Type DVD

3. Set Disc Type CD

4. Set Disc Type Hybrid

Exit: RETURN

2-1-1. Disc Type Auto Check

1) Press the [1] ke y on the remote commander to display the Disc Type Auto Check screen.

2) Insert a disc and press the [ENTER] key on the remote commander.

3) It judges the type of inserted disc automatically and displays the disc type and so on as below.

Disc Type Auto Check

Disc Type xx Layer xx Mirr Time xx Mirr Count xx FZC Count xx PI Reference xx PI Peak xx

Basic operation:

(controllable from front panel or remote commander) POWER / @/1 :Power OFF (release the Test Mode)

x : Servo stop

A : Stop and eject/Loading

[RETURN] : Return to Operation Menu or Test

Mode Menu

[ PREV], [NEXT ] :Transition between sub modes of menu

[1] to [9], [10/0] : Selection of menu items

Cursor o/

: Increase/Decrease in manually

adjusted value

ENTER.Execute

Exit: RETURN

Disc Type : CD, DVD or Hybrid (SACD) Layer : SINGLE, DUAL or HYBRID Mirr Time : Mirror time of between disc surface and record

surface when disc type judgment. (hexadecimal number)

Mirr Count : The number of times which mirror counts between

disc surface and record surface when disc type judging. (hexadecimal number)

FZC Count : The number of times which focus zero cross points

of each layer when lens down. (hexadecimal number)

PI Reference : The average of PI reference voltage. (hexadecimal

number)

PI Peak : PI peak level voltage. It performs only when disc

type judgment is successful. (hexadecimal number)

2-1-2. Disc Type DVD It sets up so that it may judge as a disc type of specification of the disc with which the set was inserted.

[1]: DVD single layer disc (12 cm) [2]: DVD dual layer disc (0 layer, 12 cm) [3]: DVD dual layer disc (1 layer, 12 cm) [4]: DVD-RW disc (12 cm) [5]: DVD single layer disc (8 cm) [6]: DVD dual layer disc (0 layer, 8 cm) [7]: DVD dual layer disc (1 layer, 8 cm)

HCD-EA20

2-1-3. Disc Type CD It sets up so that it may judge as a disc type of specification of the disc with which the set was inserted.

[1]: CD disc (normal speed, 12 cm) [2]: CD disc (double speed, 12 cm) [3]: CD disc (normal speed, 8 cm) [4]: CD disc (double speed, 8 cm) [5]: CD-RW disc (normal speed, 12 cm) [6]: CD-RW disc (double speed, 12 cm) [7]: CD-RW disc (normal speed, 8 cm) [8]: CD-RW disc (double speed, 8 cm)

2-1-4. Disc Type Hybrid It sets up so that it may judge as a disc type of specification of the disc with which the set was inserted.

[1]: SACD Hybrid disc (SACD layer, 12 cm) [2]: SACD Hybrid disc (CD layer, normal speed, 12 cm) [3]: SACD Hybrid disc (CD layer, double speed, 12 cm) [4]: SACD Hybrid disc (SACD layer, 8 cm) [5]: SACD Hybrid disc (CD layer, normal speed, 8 cm) [6]: SACD Hybrid disc (CD layer, double speed, 8 cm)

2-2. Servo Control

Note: Be sure to perform the disc type setup before performing this item.

Servo Control

1.LD off R.Sled FWD

2.Focus off L.Sled REV

3.SPDL off U.Sled Reset

4.CLVA off D.Sled Limit

5.Trk. off

6.Sled off

7.Fcs.Srch off

2-3. Track/Layer Jump

Track/Layer Jump

1. 1Tj FWD R.Lj L0>L1

2. 1Tj REV L.Lj L1>L0

3.500Tj Fine FWD U.Fj L0>L1

4.500Tj Fine REV D.Fj L1>L0

5.10kTj Dirc FWD

6.10kTj Dirc REV

7.20kTj Dirc FWD

8.20kTj Dirc REV

0. All Servo Off

Exit: RETURN

On this screen, track jump, etc. can be performed. Only for the DVD dual layer disc, the focus jump and layer jump are displayed in the right field

[1] 1Tj FWD : 1 track jump forward. [2] 1Tj REV : 1 track jump reverse. [3] 500Tj FWD: 500 track jump (fine search)forward. [4] 500Tj REV : 500 track jump (fine search) reverse. [5] 10kTj FWD: 10k track jump (direct search) forward. [6] 10kTj REV : 10k track jump (direct search) reverse. [7] 20kTj FWD: 20k track jump (direct search) forward. [8] 20kTj REV : 20k track jump (direct search) reverse. [10/0] : All servo off.

2-4. Non EEPROM Write Adjust

Non EEPROM Write Adjust

0.All Servo Off

Exit: RETURN

On this screen, the servo on/off control necessary for replay is executed. Normally, turn on each servo from 1 sequentially and when CLVA is turned on, the usual trace mode becomes active. In the trace mode, DVD sector address or CD time code is displayed. This is not displayed where the spindle is not locked. The spindle could run overriding the control if the spindle system is faulty or RF is not present. In such a case, do not operate CLVA.

[1] LD :Turn on/off the laser. [2] Focus :Search the focus and turn on the focus. [3] SPDL : Turn on/off the spindle. [4] CLVA : Turn on/off normal servo of spindle servo. [5] Trk. : Turn on/off the tracking servo. [6] Sled : Turn on/off the sled servo. [7] FCS. Srch :Turn on/off the focus search. [8] FCS. OppL : Turn on/off the focus search to another layer

of designated layer in Disc T ype setting. (dual layer disc only)

[10/0] :All servo off. [R] Sled FWD (right cursor) : Move the sled forward. [L] Sled REV (left cursor) : Move the sled reverse. [U] Sled FWD (up cursor) : Reset the sled. [D] Sled REV (down cursor):Limit in the sled.

1. Focus Offset

2. Focus Gain

3. Trk. Offset Coarse

4. Trk. Offset Fine

5. Trk. Gain

6. EQ Boost

0.All Servo Off

Exit: RETURN

On this screen, each item can be adjusted manually. Select the desired number setting for the selected item will be displayed, then increase or decrease numeric value with theOkey or okey. This value is stored in the EEPROM. If CLV has been applied, the jitter is displayed for reference for the adjustment.

[1] to [10/0] from the remote commander, and current

[1] Focus Offset: Adjusts focus offset. [2] Focus Gain : Adjusts focus gain. [3] TRK. Offset : Adjusts tracking offset of the RF amp

(IC001) side.

[4] TRK. Offset : Adjusts tracking offset of the DSP (IC401)

side.

[5] TRK. Gain : Adjusts track gain. [6] EQ Boost : Adjusts amount of boost of equalizer. [10/0] : All servo off.

HCD-EA20

2-5. EEPROM Write Adjust

EEPROM Write Adjust

1. Focus Offset

2. Focus Gain

3. Trk. Offset Coarse

4. ——————

5. Trk. Gain

6. EQ Boost

0.All Servo Off

Exit: RETURN

On this screen, each item can be adjusted automatically. Select the desired number [1] to [10/0] from the remote commander, and selected item is adjusted automatically.

[1] Focus Offset: Adjusts focus offset. [2] Focus Gain : Adjusts focus gain. [3] TRK. Offset : Adjusts tracking offset of the RF amp

(IC001) side.

[5] TRK. Gain : Adjusts track gain. [6] EQ Boost : Adjusts amount of boost of equalizer. [10/0] : All servo off.

2-6. Memory Check

Display images are shown as follows, and all two screens are able to switch by theOkey (UP) or okey (DW).

EEPROM Data 1/2 CD SL L0 L1 Focus Gain xx xx xx xx Trk. Gain xx xx xx xx Focus Offset xx xx xx xx Trk. Offset xx xx xx xx EQ. Boost xx xx xx xx PI Level xx xx -- -Fcs. Balance -- xx -- -Jitter xx xx xx xx Mirror Time xx xx xx -FE Level -- xx -- -Traverse Lv1. -- xx -- -Next:DW Default:CLR Exit:RET

2-7. Disc Check Memory

Disc Check Memory

1. SL Disc check

2. CD Disc check

3. DL Disc check

Exit: RETURN

On this screen, measure the mirror time of chucked disc, and write to the EEPROM.

2-8. Error Rate Display

Error Rate Display

UC CR Address

PI1 Err Now xx xxxx xxxxxxxx

Max xx xxxx xxxxxxxx Avg xx xxxx

PI2 Err Now xx xxxx xxxxxxxx

Max xx xxxx xxxxxxxx Avg xx xxxx

PO Err Now xx xxxx xxxxxxxx

Max xx xxxx xxxxxxxx Avg xx xxxx

Start:ENTER Exit: RETURN

On this screen, measure and display the error rate.

UC : Incorrect value CR : Correct value

2-9. SACD Water Mark Check (Not used)

SACD Water Mark Check

EEPROM Data 2/2 CDRW DVDRW Focus Gain xx xx Trk. Gain xx xx Focus Offset xx xx Trk. Offset xx xx EQ. Boost xx xx

Prev:UP Default:CLR Exit:RET

On this screen, current servo adjusted data stored in the EEPROM are displayed. The adjusted data are initialized by pressing the

[CLEAR] key, but be careful that they are not recoverable after

initialization. Before clearing the adjusted data, make a note of the set data. This screen will also appear if [0]-All is selected in the Drive Auto Adjustment. In this case, default setting cannot be made.

PSP AMP PSN

Start: ENTER Exit: RETURN

On this screen, measure the PSP AMP v alue and PSN value of SA CD water mark.

HCD-EA20

3. MECHA AGING

On the T est Mode Menu screen, selecting [3] executes the aging of the mechanism deck.

### Aging Test MENU ###

** Pls use over 40min. CD **

Operation Menu

1. Open/Close Test

Exit: RETURN

1) On the Aging Test MENU screen, press the [1] key on the remote commander to display the Open/Close Test screen.

2) Insert discs and press the [ENTER] key on the remote commander.

3) Is starts the aging. During aging, the disc number, operating status and repeat c ycle are displayed. Aging can be aborted at any time by pressing the [RETURN] key. After the operation is stopped, press the

[RETURN] key to return to the Aging Test MENU.

4. EMERGENCY HISTORY

On the Test Mode Menu screen, selecting [4] displays the information such as servo emergency history. The history information from last 1 up to 10 can be scrolled with theOkey orokey. Also, specific information can be displayed by directly entering that number with ten keys.

• Code list of Emergency History

10: Communication to RF AMP (IC001) failed. 11: Each servo for focus, tracking, and spindle is unlocked. 12: Check sum error of EEPROM (IC204). 14: Communication to servo DSP (IC509) failed, or servo DSP

(IC509) is faulty.

15: Communication to DVD decoder (IC701) failed, or DVD

decoder (IC701) is faulty.

16: Communication to DSD decoder failed, or DSD decoder is

faulty. (Not used)

20: Initialization of sled servo failed. It is not placed in the ini-

tial position. 23: Sled servo operation error. 24: Made a request to move the sled servo to wrong position. 30: Tracking balance adjustment error. 31: Tracking gain adjustment error. 33: Focus bias adjustment error. 34: Focus gain adjustment error. 35: Equalizer adjustment error. 40: Focus servo does not operate. 41: With a DVD dual layer disc, focus jump failed. 50: CLV (spindle) servo does not operate. 51: Spindle does not stop. 60: Made a request to seek nonexistent address. 61: Seek error of retry more than regulated times. 70: Control data could not be read. 80: Disc reading failed.

5. MECHA ERROR HISTORY

On the T est Mode Menu screen, selecting [5] displays the information of mechanism deck error history. The history information from last 1 up to 8 can be scrolled with the

key orokey.

### Mecha Error History ###

### EMG. History ###

Laser Hours CD xxxxhxxm

DVD xxxxhxxm

a. bb xx xx xx xx xx xx xx

xx xx xx xx xx xx xx xx

a. bb xx xx xx xx xx xx xx

xx xx xx xx xx xx xx xx

Select:1-9 Scroll:UP/DOWN (1.Latest EMG.) Exit: RETURN

xxxxhxxm: The laser on total hours. Data below minutes are

omitted. a. : Error number. bb : Error code. xx : Not used.

• Clearing History Information

Clearing laser hours:

Press the Then both CD and DVD data are cleared.

Clearing emergency history:

Press the [DVD TOP MENU] and [CLEAR] keys in this order.

Initializing set up data:

Press [DVD MENU] and [CLEAR] keys in this order. The data have been initialized when “EEPROM Initialize Finished.”. message is displayed. The EMG. History screen will be restored soon.

[DVD DISPLAY] and [CLEAR] keys in this order.

1. aa bb cc xx xx xx xx xx

2. aa bb cc xx xx xx xx xx

3. aa bb cc xx xx xx xx xx

4. aa bb cc xx xx xx xx xx

5. aa bb cc xx xx xx xx xx

6. aa bb cc xx xx xx xx xx

7. aa bb cc xx xx xx xx xx

8. aa bb cc xx xx xx xx xx

Scroll:UP/DOWN

(1.Latest Err.) Exit: RETURN

aa: Initialization is completed or not.

FF : Complete. other number : Not complete.

bb:Operating status of mechanism deck at an error occurred.

(lod sq jcp) 00 : Initializing. 10 to 15 : Open operating. 16 to 19 : Kicking cause open failed. 1A to 1F : Open operating. 20 to 27 : Complete the open operation. 28 : No disc and complete the open operation. 29 to 2F : Complete the open operation. 30 to 3F : Close requesting. 40 to 4F : Open requesting. 50 to 5F : Close operating. 60 to 6F : Complete the chucking operation. 80 to 8F : Complete the release operation.

(BU is home position)

HCD-EA20

SECTION 5

ELECTRICAL ADJUSTMENT

90 to 9F : BU down operating. A0 to AF : Opening/closing the shutter. Or stationary state in

open/close the shutter is enablement. B0 to BF : BU up requesting. C0 to CF : BU down requesting. D0 to DF : BU upping. E0 to EF : No disc checking in disc loading.

cc: Operating status of mechanism deck at an error occurred.

(lod oq jcp) 00 : Complete the operation. 10 to 1F : Open operating. 20 to 2F : Close operating. 30 to 3F : Release operating. 60 to 6F : Chucking operating. 70 to 7F : Kicking operating. 80 to 8F : Returning the BU to home position. (after kicking)

6. VERSION INFORMATION

On the Test Mode Menu screen, selecting [6] displays the ROM version and region code. The parenthesized hexadecimal number in version field is checksum value of ROM.

## Version Information ##

IF con. Ver.x. xx

[TEST DISC LIST]

Use the following test disc on test mode. TDV-520CSO (DVD-SL): PART No. J-2501-236-A LUV-P01 (CD): PART No. 4-999-032-01 TDV-540C (DVD-DL): PART No. J-2501-235-A

Note: Do not use exiting test disc for DVD.

AUTO SERVO ADJUSTMENT

After parts related to the servo circuit (RF amplifier (IC001), DSP (IC501), motor driver (IC501), EEPROM (IC903) so on) are replaced, re-adjusting the servo circuit is necessary. Select “ALL” at “1. DRIVE AUTO ADJUSTMENT” (Refer to page 28 in TEST MODE) and adjust DVD-SL (single layer), CD and D VD-DL (dual layer).

SYScon. Ver.x. xx (xxxx)

Model DAV-EA20 Region 0x Config xxxxxxxx

Front End Ver.x.xx

Exit: RETURN

IF con. : The version of system controller (IC501). SYScon. : The version of DVD system processor (IC207). Front End: The version of mechanism controller (IC901).

7. VIDEO LEVEL ADJUSTMENT

On the Test Mode Menu screen, selecting [7] displays color bars for video level adjustment. During display of color bars, OSD disappears but the menu screen will be restored if pressing the

[RETURN] key.

6-1. CIRCUIT BOARDS LOCATION

HCD-EA20

SECTION 6

DIAGRAMS

SUB TRANSFORMER board

STANDBY board

MS-128 board

RF board

PANEL board

I/O board

AMP boar

UCOM board

DMB03 board

HCD-EA20

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.

•

• C : panel designation.

Note: The components identified by mark 0 or dotted line

• A : B+ Line.

• B : B– Line.

•Voltages and waveforms are dc with respect to ground

•Voltages and wavef orms are dc with respect to ground in

•Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

•Abbreviation

: internal component.

with mark 0 are critical for safety. Replace only with part number specified.

under no-signal (detuned) conditions. service mode. Voltage variations may be noted due to normal produc-

tion tolerances. no mark : STOP

F : AUDIO J : CD PLAY c : DVD PLAY d : TUNER L : VIDEO a : CHROMA E : Y e : AUX IN

RU : Russian model

W or less unless otherwise

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.)

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

: Through hole.

• Indication of transistor

CEB

These are omitte

6-2. BLOCK DIAGRAMS – RF/SERVO SECTION –

DVDRFP

RFSIN

ATOP

ATON

HCD-EA20

117

RFIN

FNP

AIP

AIN

FNN

535254

DIP

DIN

RFAC

PCMD

160

MDAT

32, 30, 27, 24

HDB0 – HDB7

44, 41, 39, 35,

SD0 – SD7

VIDEO

SECTION

DETECTOR

OPTICAL PICK-UP

BLOCK

(TDP022W)

LASER

CD LD

DIODE

(FOR CD)

LASER

DVD LD

DIODE

(FOR DVD)

INLIM

FCS+ FCS–

2AXIS DEVICE FOCUS/

COIL

TRK+ TRK–

TRACKING

A B C D

AUTOMATIC POWER

CONTROL (FOR CD)

AUTOMATIC POWER

CONTROL (FOR DVD)

LASER DIODE

(SPINDLE)

Q901

SELECT

(SLED)

Q002

Q001

CBA

CD E

CD F

CD A

CD B

CD C

CD D

CDLD

CDPD DVDPD

DVDLD

V125

FOCUS/TRACKING COIL DRIVER, SPINDLE, SLED MOTOR DRIVER

36 48 37 1

34 3 35 4

32 31 30 29

27 28

47 46

IC501

BUFFER

FOCUS COIL

DRIVE

TRACKING COIL

DRIVE

SLED MOTOR

DRIVE

SLED MOTOR

DRIVE

SPINDLE MOTOR

DRIVE

BUFFER

IC001

CD/DVD/SACD RF AMP,

FOCUS/TRACKING ERROR AMP

4042

MUTE12 MUTE34

MUTE5 TSD-M

39 19 20 21 22

POWER SAVE

(1.65V)

AVC

SDATA

SCLK SDEN

MIRR

LDON

FF FR

47 46 48

42MNTR

FCS_JMP_1

FCS_JMP_2

SLED_B

SLED_A

MUTE_2D

SP_ON

TSD-M

76 31

LDON

LDSEL

SLED

DATA_RF

CLK_RF

SDEN

MIRR

INLIM

TE FE

FE PI

CLK_RF

DATA_RF

SDCLK_RF

SDATA_RF

IC503

SDEN

AMP

BCK LRCK C2PO

WDCK

WFCK SBSO EXCK

IC509

CD DECODER,

DIGITAL SERVO PROCESSOR

XTAI

MDP

MD2

SCOR

DATA CLOK

XLAT

SSTP

SE FE

39 43

RFDC

FFDR

FRDR

TFDR

TRDR

SFDR

SRDR

MIRR

67PI66

IC901 (1/2)

MECHANISM

CONTROLLER

SENS

SQSO SQCK

XRST

LOCK

GFS

MUTE

COUT SCLK

FOK MIRR

LRCK

C2PO

GSCOR

WFCK

SBSO

EXCK

SCOR

IC906

CLOCK

GENERATOR

13 3

49 50 27

9 52 54

75 71 59

30 72 74 29

IC703 (2/2)

DOCTRL/ ISBTEST

SCOR

DATA_CD CLOK_CD LAT_CD SENS_CD SQSO SQCK

XDRST

LOCK_CD GFS_CD MUTE_CD

COUT_CD SCLK_CD FOK_CD MIRR

4 6 5

7 76 77

24 13

8 22 20

7 8

XTI

SO3

MO1

27M

BUFFER

X902

27MHz

XTO

SO2

XRD

XWR

XCS_DVD INIT0_DVD INIT1_DVD

GFS_DVD

XRST_1882

SCK_DSD

MNT1

SDA_EEP

SCL_EEP

WP_EEP

JIT

14-21

D0 – D7

89-96

A0 – A7

85 84 12 22 23

100

BCLK

BCLK LRCK C2PO GSCOR

WFCK SBSO EXCK SCOR

IC703 (1/2)

COMPARATOR

SDA

SCL

158

BCLK

163

LRCK

155

C2PO

146

GSCOR

151

WFCK

148

SBIN

147

EXCK

150

SCOR

DVD DECODER

167

XTAL

169

XTL2

170

XTL1

137

MDIN2

135

SPO

D0 – D7

172-176, 1, 2, 4

A0 – A7

5, 7, 9-14

XRD

XWR

XCS

XINT0

XINT1

107

GFS

164

XRST

IC903

EEPROM

XHWR

HDRQ

HDB8

IC701

MDB0 – MDB9,

XMWR

XMOE

XRAS XCAS

APE0

MNT1

109

• SIGNAL PATH

48 46 26

MDBA – MDBF

99, 101, 102, 104-106

66-69, 71, 73-75, 96, 97,

89, 91

MA0 – MA9

79, 80, 82-87,

76 94 78 95

XHAC

: CD

: DVD

XDCK XSAK

SDEF

2-5, 7-10,

21-24,

17 33 18 34 35

I/O0 – I/O15A0 – A9

41-44, 46-49

IC706 16Mbit D-RAM

27-32

WE OE RAS UCAS LCAS

XDCK, XSAK, SDEF

27M

XSRQ-ZIVA

: AUDIO

: VIDEO

VIDEO

SECTION

VIDEO

SECTION

VIDEO

SECTION

2929

HCD-EA20

– VIDEO SECTION –

RF SERVO

SECTION

RF SERVO

SECTION

AUDIO

SECTION

AUDIO

SECTION

IC256

D-FF

IC258

D-FF

IC259

D-FF

AV0 AV1 AV2 AV3 AV4 AV5 AV6 AV7

XSAK# SDEF# XDCK#

IC255

177-174, 171-168

SDDATA0 – SDDATA7

SDEN

179

SDERROR

182

SDCLK

183

INT/EXT

192

DAI_DATA

157

LRCK

148

BCK

149

XCK

147

DATA0(DM)

150

DATA1(FLR)

151

DATA2(SLR)

152

DATA3(CSW)

153

VDAC_0

VDAC_2

VDAC_1

J102(1/2)

VIDEO

VIDEO IN

131

125

128

VIDEO INPUT

SELECTOR

IN1

IN3

IC151

SW1

2 4

OUT

SW2

IC106

VIDEO SELECTOR

12 7

CT2

CT3

OUT2

OUT3

OUT1

CT1

IC251

75Ω DRIVER

IC252

VIDEO AMP, 75Ω DRIVER

YIN

CIN

VIN

MUTE1

YOUTB YOUTA

COUT

VOUTB VOUTA

MUTE2

28 27

31 30

VOUT

AV SEL2 AV SEL0 AV SEL1

Q251, 252

WIDE SWITCH

J101 (1/2)

VIDEO

VIDEO OUT

S VIDEO

(DVD ONLY)

VIDEO

J251

MONITOR OUT

AV SEL0 – AV SEL2

AUDIO

SECTION

XSAK SDEF XDCK

ADC_DATA BCK

LRCK

LRCK-ZIVA BCK-ZIVA

XCK DATA0 DATA1 DATA2 DATA3

SD0 SD1 SD2 SD3 SD4 SD5 SD6 SD7

RE SERVO

SECTION

RE SERVO

SECTION

AMP

SECTION

AUDIO

SECTION

AMP

SECTION

27M

XSRQ_ZIVA

SYS RESET, MUTE REQ

MDI, MC, ML

I2CDATA, I2CCLK

I2CDATA

I2CCLK

SYS RESET

MUTE REQ

MDI MC ML

Q904

SWITCH

Q903

SWITCH

XIN

139

195

CEWEOE

HCS0

107

VS/WIDE

WEN.UDS

HREAD

2,4,5,7,8,10,11,13,74,76,77,79,80,82,83,85,31,

33,34,36,37,39,40,42,45,47,48,50,51,53,54,56

MD0 – MD31

57-60, 64-71, 75-78, 81-84, 88-95, 99-102

DQ0 – DQ31 A0 – A11

CKE

MA0 – MA11

42-33, 45, 46

25-27,

60-66,24,21

IC203

128Mbit SD-RAM

• SIGNAL PATH

BA0

BA1

BS0

BS1

: AUDIO

: VIDEO : Y : CHROMA

: TUNER

MCLK

CLK

MCS0

MWE

MRAS

RAS

MCAS

CAS

MDQM0

MDQM1

DQM0

DQM1

MDQM2

DQM2

MDQM3

DQM3

SDREQ

178

RESET

202

MREQ

110

MDI

143

144

145

I2C_DA

161

160

I2C_SIO

41 40

I2C_CL

I2C_SCL

EXTAL

X901

20MHz

DRVTX

186

SO_ZIVA

187

XTAL

DRVRX

DRVCLK

185

SI_ZIVA

SCK_ZIVA

HIRQ1

184

DRVIRQ

DRVRDY

188

IC904

FLIP-FLOP

DRVRDY

IC901 (2/2)

MECHANISM CONTROLLER

IC902

SWITCHING

6 5 4

HIRQ2

WRITE_CTRL(ZIVA_E2P)

116

165

1 8

R/B

DO DI SK

IC204

EEPROM

Q202

CS_(ZIVA_E2P)

191

162

CS_ZIVA

RST_SPC

RST

DATA & ADDRESS BUS

HAD0 – HAD15

29,31,33,35,38,40,42,44,

30,32,34,36,39,41,43,45

DQ0 – DQ15

IC207

DVD SYSTEM PROCESSOR

22, 19-14, 11-3 2, 207, 206

HAD0 – HAD15 HA1 – HA3

DATA & ADDRESS BUS

HAD0 – HAD15 HA1 – HA3

55, 54, 52, 51,

49-47, 45-40, 38-36

1D1 – 1D10, 2D1 – 2D6

1Q1 – 1Q10, 2Q1 – 2Q9

2, 3, 5, 6, 8-10, 12-17,

19-21, 23, 24, 26

HA1 –

HA3

25-23

A0 – A2

PROGRAMMABLE ROM

HA1 – HA3HAD0 – HAD15

34, 33, 31

2D7 – 2D9

ADDRESS BUS

22-18, 8-1, 48,

17, 16, 9, 10, 13

A3 – A21

IC206

190

56 29

BUS INTERFACE

HA4 –HA22

ALE

1LE

2LE

IC216

28OE11

3030

+ 72 hidden pages

Sony HCD-EA20 Service Manual

TABLE OF CONTENTS

3-1. CASE

3-2. FRONT PANEL SECTION

3-3. PANEL BOARD, STANDBY BOARD

3-4. UCOM BOARD

3-5. DMB03 BOARD

3-6. I/O BOARD

3-7. AMP BOARD, SUB TRANSFORMER BOARD

3-8. DVD MECHANISM (CDM77A-DVBU20)

3-9. TRA Y (AU)

3-10. MS-128 BOARD

3-11. BASE UNIT

3-12. OPTICAL PICK-UP (TDP022W)

6-1. CIRCUIT BOARDS LOCATION

6-2. BLOCK DIAGRAMS – RF/SERVO SECTION –

– VIDEO SECTION –