Sony HCD-DX80 User Manual

HCD-DX80

SERVICE MANUAL

Ver 1.1 2001.11

• HCD-DX80 is the tuner, deck, CD and amplifier section in MHC-DX80.

CD CD Mechanism Type CDM58E-30BD60 Section Base Unit Name BU-30BD60

Tape deck Model Name Using Similar Mechanism NEW Section T ape Tr ansport Mechanism Type TCM-230AWR41

E Model

Model Name Using Similar Mechanism HCD-DX50

Optical Pick-up Name A-MAX.3

SPECIFICATIONS

– Continued on next page –

9-929-593-12 Sony Corporation

2001K0500-1 Home Audio Company C 2001.11 Published by Sony Engineering Corporation

MINI HI-FI COMPONENT SYSTEM

HCD-DX80

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 pick-up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objectiv e lens.

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.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIA GRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.

2

HCD-DX80

MODEL IDENTIFICATION

— BACK PANEL —

PARTS No.

MODEL

BR, E2, E51, SP, AR models MX model

• Abbreviation AR : Argentina model BR : Brazilian model E2 : 120 V AC Area in E model E51 : Chilean and Peruvian model SP : Singapore model MX : Mexican model

PARTS No.

4-231-580-4s 4-231-580-5s

GENERAL

This section is extracted from instruction manual.

4

HCD-DX80

5

HCD-DX80

6

• This set can be disassembled in the order shown below.

2-1. DISASSEMBLY FLOW

SET

2-2. CASE (TOP)

(Page 8)

2-3. LOADING PANEL

(Page 8)

2-4. CD MECHANISM DECK

(CDM58E-30BD60) (Page 9)

HCD-DX80

SECTION 2

DISASSEMBLY

2-5. FRONT PANEL SECTION

(Page 9)

2-7. BACK PANEL SECTION

(Page 10)

2-8. MAIN BOARD

(Page 11)

2-6. TAPE MECHANISM DECK

(TCM-230AER41) (Page 10)

2-9. LEAF SW BOARD,

HEAD (A) BOARD, HEAD (B) BOARD (Page 11)

2-10. BASE UNIT (BU-30BD60)

(Page 12)

2-11. DRIVER BOARD,

MOTOR BOARD, ADDRESS SENSOR BOARD (Page 12)

7

HCD-DX80

)

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

2-2. CASE (TOP)

two screws (case 3 TP2)

5

8

side panel (L)

6

screw (case 3TP2)

qa

case (Top)

q;

7

two screws

(+BVTP 3

×

10)

q;

4

side panel (R)

9

four screws

(+BVTP 3

×

12)

2-3. LOADING PANEL

2

Pull-out the disc tray.

3

loading panel

3

(+BVTP 3

1

two screws (case 3 TP2

2

screw (case 3 TP2)

–BOTTOM VIEW– CD mechanism deck (CDM58E-30BD60)

1

Turn the pulley in the direction of the arrow.

two

screws

×

10)

Front panel side

8

2-4. CD MECHANISM DECK (CDM58E-30BD60)

5

CD mechanism deck (CDM58E-30BD60)

4

screw (+BVTP 3

×

10)

1

wire (flat type) (21 core)

2

connector (

CN202)

HCD-DX80

(CN201)

2-5. FRONT PANEL SECTION

2

wire (flat type) (17 core)

8

Screws

(+BVTP 3

9

(CN304)

×

10)

1

connector (

CN607)

3

screw (+BVTP 3

× 10)

two screws

6

(+BVTP 3

× 10

7

screws (+BVTP 3

3

connector (

4

connector (

0

)

front panel section

CN1)

CN2)

5

screw

(+BVTP 3

×

10)

× 10

)

9

HCD-DX80

)

2-6. TAPE MECHANISM DECK (TCM-230AWR41)

2

Tape mechanism deck

(TCM-230AWR41)

1

five

screws

(+BVTP 2.6

×

8

2-7. BACK PANEL SECTION

2

1

connector (CN973)

connector

(CN505)

6

back panel section

3

connector

(CN891)

4

five screws

(+BVTP 3

5

two screws

(+BVTP 3

×

10)

10

2-8. MAIN BOARD

MAIN board

2

MAIN board

HCD-DX80

2-9. LEAF SW BOARD, HEAD (A) BOARD, HEAD (B) BOARD

2

five claws

1

two screws (+BVTP 3

3

LEAF

SW board

1

Remove the four solderings.

×

10)

5

head (A) board

4

screw (+PTT 2

×

7

4)

6

head (B) board

screw (+PTT 2

×

4)

11

HCD-DX80

2-10. BASE UNIT (BU-30BD60)

qs

two insulators (BU-30)

qd

base unit (BU-30BD60)

2

holder assy

qa

1

screw (+PTPWH M2.6)

qs

two insulators (BU-30)

q;

screws (DIA. 12)

8

two stoppers (BU)

7

two screws (+BVTP 2.6

6

BD board

5

rivet

×

8)

2-11. DRIVER BOARD, MOTOR BOARD, ADDRESS SENSOR BOARD

qs

qd

3

wire (flat type) (8 core)

tray

(CN702)

screw (+PTPWH 2.6

qf

screw (+BVTP 2.6

0

×

8)

6

MOTOR board

7

×

8)

two screws (+BVTP 2.6

8

wire (flat type) (8 core)

5

Remove the two solderings of motor.

9

qg

ADDRESS

9

two

4

3

wire (flat type) (21 core)

×

8)

(CN721)

connector

SENSOR board

screws (+PTPWH M2.6)

wire (flat type) (16 core)

(CN102)

(CN101)

12

4

driver board

1

s

crew (+BVTP 2.6

qa

Pull-out the disc tray.

×

2

8)

SECTION 3

TEST MODE

HCD-DX80

[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 x , ENTER , and ?/1 simultaneously.

2. The fluorescent indicator tube becomes blank instantaneously,

and the set is reset.

[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 x , ENTER , and DISPLAY

simultaneously.

2. The fluorescent indicator tube becomes blank instantaneously,

and the set is reset.

[Tuner Step Change]

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

Procedure:

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

2. Select the function “TUNER”, and press TUNER/B AND button

to select the BAND “AM”.

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

4. Press ENTER and ?/1 buttons simultaneously , and the display

of fluorescent indicator tube changes to “AM 9 k STEP” or “AM 10 k STEP”, and thus the channel step is changed over.

[Function Change Mode]

• Select either VIDEO or MD of the external FUNCTION input.

Procedure:

1. Turn on the power.

2. Hold do wn MD (VIDEO) b utton then press ?/1 button , and

release ?/1 button first in order not to switch off the set immediately. The another function of the previous function is selected , the input level is also changed and displayed “ MD ” or “VIDEO”.

[GC Test Mode]

• This mode is used to check the software version, FL tube, LED, keyboard and VACS.

Procedure:

1. Press three buttons x , ENTER , and DISC 2 simultaneously .

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

3. When you want to enter the software version display mode,

press DISC 1 . The model number and destination are displayed.

4. Each time DISC 1 is pressed, the display changes starting

from MC version, GC version, CD version, CDD version, CDM version, BD version, ST version, TC version, TA version and TM version in this order, and returns to the model number and destination display.

5. When DISC 3 is pressed while the v ersion numbers are being

displayed except model number and destination, year, month and day of the software creation appear. When DISC 3 is pressed again, the display returns to the software version display . When DISC 1 is pressed while year, month and day of the software creation are being displayed, the year, month and day of creation of the software versions are displayed in the same order of version display.

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

7. In the key check mode, the fluorescent indicator tube displays

“K0 V0”. Each time a button is pressed, “KEY” value increases. However, once a button is pressed, it is no longer taken into account. “VOL” value increases like 1, 2, 3 ... if rotating VOLUME knob in “+” direction, or it decreases like 0, 9, 8 ... if rotating in “–” direction.

8. Also when DISC 3 is pressed after lighting of all LEDs and FL tubes, value of VACS appears.

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

[MC Test Mode]

• This mode is used to check operations of the respective sections

of Amplifier, Tuner , and Tape.

Procedure:

* To enter MC Test Mode

1. Press the ?/1 button to turn on the set.

2. Press the three buttons of x , ENTER and DISC 3 simultaneously.

3. The messages MUSIC, MOVIE, GAME and P FILE flash on the FL display tube. The input FUNCTION is Changed to VIDEO.

* Check of Amplifier

1. When v (CURSOR UP) button is pressed, GEQ increases to its maximum and a message “GEQ MAX” appears.

2. When V (CURSOR DO WN) button is pressed, GEQ decreases to its minimum and a message “GEQ MIN” appears.

3. When b (CURSOR LEFT) or B (CURSOR RIGHT) b utton is pressed, GEQ is set to flat and a message “GEQ FLAT” appears.

4. When the VOLUME control knob is turned clockwise even slightly, the sound volume increases to its maximum and a message “VOLUME MAX” appears for two seconds, then the display returns to the original display.

5. When the V OLUME control knob is turned counter-clockwise even slightly , the sound volume decreases to its minim um and a message “VOLUME MIN” appears for two seconds, then the display returns to the original display.

* Check of clock frequency

1. To check the frequency of clock used to run the time in the unit, the clock output is available at pin 39 (IC 501, MASTER CONTROL) only during MC test mode.

2. The frequency is 32.768 kHz or so.

* Tuner function

1. In the test mode, the default-preset c hannel is called even w hen the TUNER is selected and an attempt is made to call the preset channel that has been stored in memory. (It means that the memory is cleared.)

2. The minimum, center and maximum frequenc y of each band is set then.

13

HCD-DX80

* Tape function

1. When a tape is inserted in Deck B and recording is started, the input source function selects VIDEO automatically. When CD SYNC/HI-DUB button is pressed during Rec in function, ALC is turned on.

2. When x button is pressed to stop recording, the Tape (Deck)

B is selected and tape is rewound, tape is rew ound using m button, tape is stops at around the record-starting position and playback of the recorded portion of the tape is started. If P AUSE is inserted even once during recording, tape is rewound to the position around the PAUSE position and is played back.

3. When CD SYNC / HI-DUB button is pressed during playback

of Deck B, either normal speed or high speed can be selected by this button.

* AMS Test Mode

1. Set TAPE function

2. Select the desired loop by pressing the PLAY MODE b utton.

Insert a test tape AMS-110A or AMS-120 to Deck A.

3. Press the SPECTRUM button to enter the AMS test mode.

4. After a tape is rewound first, the FF AMS is checked, and the

mechanism is shut off after detecting the AMS signal twice.

5. Then the REW AMS is checked and the mechanism is shut off

after detecting the AMS signal twice.

6. When the check is complete, a message of either OK or NG

appears.

[CD Ship Mode (Memory Clear) ]

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

Procedure:

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

2. Press three b uttons x , ENTER and GAME simultaneously.

3. After the "STANDBY" display blinks six times, a message

“LOCK” is displayed on the fluorescent indicator tube, and the CD ship mode is set.

[CD Ship Mode (No Memory Clear) ]

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

Procedure:

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

2. Press CD button and ?/1 button simultaneously.

3. After the "STANDBY" display blinks six times, a message

“LOCK” is displayed on the fluorescent indicator tube, and the CD ship mode is set.

* To return to normal mode again.

1. When you want to exit this mode, press the ?/1 button.

2. The cold reset is enforced at the same time.

[VACS ON/OFF Mode]

• This mode is used to switch ON and OFF the VACS (Variable Attenuation Control System).

Procedure:

Press the ENTER and SPECTRUM buttons simultaneously. The message “VACS OFF” or “VACS ON” appears.

[CD Service Mode]

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

Procedure:

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

2. Select the function “CD”.

3. Press three buttons x , ENTER , and OPEN/CLOSE simul-

taneously.

4. The CD service mode is selected.

M

5. W ith the CD in stop status, press

to outside track, or press m button to inside track.

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

–

b utton to move the pickup

+

1) Move the pickup to the most inside track.

2) Press ?/1 button to turn the set OFF.

Note: • Always move the pickup 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.

14

SECTION 4

r

MECHANICAL ADJUSTMENTS

HCD-DX80

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 Torque meter

FWD

FWD back tension

REV

REV back tension

FF/REW

FWD tension

REV tension

CQ-102C

CQ-102RC

CQ-201B

CQ-403A

CQ-403R

Meter reading

3.06 N • m to 6.96 N • m 31 to 71 g • cm

(0.43 – 0.98 oz • inch)

0.19 N • m to 0.58 N • m

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

3.06 N • m to 6.96 N • m 31 to 71 g • cm

(0.43 – 0.98 oz • inch)

0.19 N • m to 0.58 N • m

2 to 6 g • cm

(0.02 – 0.08 oz • inch)

6.96 N • m to 14.02 N • m 71 to 143 g • cm

(0.98 – 1.99 oz • inch)

9.80 N • m

100 g or more

(3.53 oz or more)

9.80 N • m

100 g or more

(3.53 oz or more)

DECK SECTION

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

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

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

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

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

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

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

• Test Tape

Tape Signal Used for

P-4-A100 10 kHz, –10 dB Azimuth Adjustment

WS-48B 3 kHz, 0 dB Tape Speed Adjustment

P-4-L300J 315 Hz, 0 dB Level Adjustment

Record/Playback Head Azimuth Adjustment

0 dB=0.775 V

DECK A DECK B

Note: Perform this adjustments for both decks

Procedure:

1. Mode: Playback

test tape P-4-A100 (10 kHz, –10 dB)

set

main board CN301 Pin

3

(L-CH)

1

(R-CH)

main board CN301

2

(GND)

level mete

+ –

15

HCD-DX80

e

2. T urn 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 1dB of peak.

Output level

within 1dB

L-CH peak

R-CH peak

within 1dB

Screw position

L-CH peak

Screw position

R-CH peak

3. Mode: Playback

test tape P-4-A100 (10 kHz, –10 dB)

L-CH

MAIN board CN301 set

R-CH

waveform of oscilloscope

in phase 45°90°135°180

L

R

good

3

1

2

oscilloscop

V

wrong

H

°

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

Adjustment Location: Playback Head (Deck A).

Record/Playback/Erase Head (Deck B).

Tape Speed Adjustment

Note: Start the Tape Speed adjustment as below after setting to the test

mode. In the test mode, the tape speed is high during pressing the

DECK B

CD SYNC/HI-DUB button.

Procedure:

1. Turn the power switch on.

2. Press the x button, ENTER button and DISC 3 button simultaneously. (The “TEST MODE” on the fluorescent indicator tube display while in the test mode.) To exit from the test mode, press the ?/1 button.

Mode: Playback

test tape WS-48B (3 kHz, 0 dB)

set

main board CN301 (Pin

frequency counter

3

: L-CH)

1

: R-CH)

(Pin

+

–

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

2. Press the gG button on the deck B.

3. Press the CD SYNC/HI-DUB button in playback mode. Then at HIGH speed mode.

4. Adjust RV1001 on the LEAF SW board so that frequency counter reads 6,000 ± 30 Hz.

5. Press the CD SYNC/HI-DUB button. Then back to NORMAL speed mode.

6. Adjust RV1002 on the LEAF SW board so that frequency counter reads 3,000 ± 15 Hz.

Adjustment Location: LEAF SW board

Playback level Adjustment

DECK A DECK B

Procedure:

Mode: Playback

test tape P-4-L300J (315 Hz, 0 dB)

level meter

forward

reverse

3 1

+

–

: L-CH) : R-CH)

set

main board CN301 (Pin

(Pin

1. Confirm that level difference between the channels is with ±

0.5 dB.

2. After check, adjust the following RVs. Deck A is RV302 (L-CH), Deck B is RV303 (L-CH) so that adjustment within adjustment level as follows.

Adjustment Level:

CN301 PB level: 334.4 to 748.7 mV (–7.3 to –0.3 dB)

Adjustment Location: MAIN board

Sample Volue of Wow and Flutter: 0.3% or less W. RMS

(WS-48B)

16

HCD-DX80

r

set

MD/VIDEO (AUDIO) IN (J101) 315 Hz, 50 mV (–23.8 dB)

blank tape CS-123

600

Ω

attenuator

AF OSC

+

–

set

recorded portion

CN301 (Pin

3

: L-CH)

(Pin

1

: R-CH)

level meter

REC Bias Adjustment DECK B

Procedure:

In the MC test mode, the “REC memory mode” is convenient for this adjustment. In the “REC memory mode” , when the REC starts the input signal FUNCTION is switched to VIDEO automatically. When the REC stops, the tape returns near to the recording start position.

1. Press MD (VIDEO) 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.

3. After press REC P AUSE/START button, press REC P AUSE/ START button, then recording start.

4. Mode: Record

MD/VIDEO (AUDIO) IN (J101)

1) 315 Hz

2) 10 kHz

AF OSC

attenuator



50 mV (–23.8 dB)

 

600

Ω

blank tape CN-123

set

5. Mode: Playback

recorded portion

set

level mete

+

–

4. Mode: Record

5. Mode: Playback

6. Confirm the play back signal recorded in step 3 becomes adjustable level as follows. If these levels are not adjustable level, adjust the RV301 (LCH) and RV351 (R-CH) on the MAIN board to repeat steps 4 and 5.

Adjustable level:

CN301 PB level: 47.2 to 53.0 mV (–24.3 to –23.3 dB) Adjustment Location: MAIN board

[MAIN BOARD] (Component Side)

CN301 (Pin

(Pin

3 1

: L-CH) : R-CH)

6. Confirm the playback signal recorded in step 3 becomes adjustable level as follows. If these levels are not adjustable level, adjust the RV304 (LCH) and R V354 (R-CH) on the MAIN board to repeat steps 4 and 5.

Adjustable level: Playback output of 315 Hz to playback output

of 10 kHz: ±1.0 dB

Adjustment Location: MAIN board

REC Level Adjustment DECK B

Procedure:

In the MC test mode, the “REC memory mode” is convenient for this adjustment. In the “REC memory mode” , when the REC starts the input signal FUNCTION is switched to VIDEO automatically. When the REC stops, the tape returns near to the recording start position.

1. Press MD (VIDEO) 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.

3. After press REC P AUSE/START button, press REC P AUSE/ START button, then recording start.

T11

RV11

PB LEVEL (L)

(A)

PB LEVEL (L)

(B)

REC LEVEL (R)

(B)

REC BIAS (L)

(B)

[LEAF SW BOARD] (Component Side)

TAPE SPEED





(NORMAL) (HIGH)

RV1002

RV1001

REC LEVEL (L)

CN301

3

1

RV351

RV304

REC BIAS (R)

CN1001

(B)

RV301

RV302 RV353 RV303

CN304

RV352

NO303

RV354

(B)

17

HCD-DX80

p

TUNER SECTION

FM Tuned Level Adjustment

FM RF SIGNAL GENERATOR

Ω

coaxial

75

set

Carrier frequency : 98 MHz Modulation : AUDIO 1 kHz, 75 kHz deviation (100%)

Ω

Output level : 28 dB (at 75

open)

Procedure:

1. Supply a 98 MHz signal at 28 dB from the ANTENNA terminal.

2. Tune the set to 98 MHz.

3. Adjust RV11 to the point (moment) when the TUNED indicator will change from going off to going on.

Adjustment Location: MAIN board

Null Adjustment

FM RF SIGNAL GENERATOR

75

Ω

coaxial

Carrier frequency : 98 MHz Modulation : AUDIO 1 kHz, 75 kHz deviation (100%) Output level : 60 dB (at 75

Ω

open)

Procedure:

1. Supply a 98 MHz signal at 60 dB from the ANTENNA terminal.

2. Tune the set to 98 MHz.

3. Measure voltage between pin 22 and pin 3 of IC11. Adjust T11 until the voltage becomes 0 V.

Adjustment Location: MAIN board

Adjustment Location

[MAIN BOARD] (Component Side)

FM ANTENNA terminal (TM1)

set

FM ANTENNA terminal (TM1)

CD SECTION

Note :

1. CD Block is basically designed to operate without adjustment. Therefore, check each item in order given.

2. Use LUV-P01 (4-999-032-01) 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.

S-Curve Check

Oscilloscope

BD board

TP(FEO) TP(DVC)

Procedure :

1. Connect an oscilloscope to TP (FEO).

2. Connect between TP (FEI) and TP (DVC) ( 1.65 V) by lead wire.

3. Turn Power switch on.

4. Load a disc (LUV-P01) and actuate the focus search. (In consequence of open and close the disc tray, actuate the focus search)

5. Confirm that the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 2 ± 0.5 Vp-p.

S-curve waveform

symmetry

A

±

within 2

B

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

Note : • Try to measure several times to make sure than the ratio

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

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

RF Level Check

BD board

oscilloscope

0.5Vp-

18

NULL

T11

RV11

FM TUNED LEVEL

CN301

3

RV351

TP(RFDC) TP(RFAC)

TP(DVC)

Procedure :

1. Connect an oscilloscope CH1 to TP (RFDC) and CH2 to TP (RFAC).

CN304

RV301

1

RV304

RV352

RV302 RV353 RV303

NO303

RV354

2. Turn Power switch on.

3. Load a disc (LUV-P01) and playback.

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

HCD-DX80

e

)

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 : 0.65

±

0.15Vp-p (RFDC)

1.1

±

0.4Vp-p (RFAC)

E-F Balance (1 Track jump) Check

oscilloscop

BD board

TP(TEO) TP(DVC)

Procedure :

1. Connect an oscilloscope to TP (TEO) and TP (DVC).

2. Turn Power switch on.

3. Load a disc (LUV-P01) and playback the number nine track.

4. Press the gG button. (Becomes the 1 track jump mode.)

5. Confirm that the level B and A (DC voltage) on the oscilloscope waveform.

Adjustment Location:

[BD BOARD] (Conductor Side)

TP (DVC)

TP

15

IC103

16

1

30

TP

(RFDC)

40 41

IC101

60

2021

61

(RFAC)

TP

(FEI)

RV101

TP (FEO) TP (TEO)

1

80

1 track jump waveform

DVC

level=1.0 ±0.5Vp-p

B

symmetry

center of waveform

A (DC voltage

6. Adjust RV101 on the BD board so that the center of waveform becomes the same voltage of DVC. (i.e. A=0V)

19

HCD-DX80

MEMO

20

SECTION 6

DIAGRAMS

6-1. BLOCK DIAGRAM – TUNER/CD Section –

TM1

FM 75Ω

G

AM

FM FRONT-END

1

ANT IN

FE1

IF OUT

OSC OUT

7

8

VT

5

CF1 CF2

+B

(11.7V)

X51

4.5MHz

Q1

RF IF AMP

Q2

10

1

22

16

19

20

18

A+12V

FM

XIN

XOUT

FM OSC

A IN

A OUT

PD

PLL IC51

FM

AM OSC

VCO STOP

IF REQ

IF IN

DO

DI

CL

CE

+B

(+7.4V)

RV11

7

15

9

8

12

6

4

5

3

HCD-DX80

AM/FM IF AMP, MPX

IC11

FM IF

1

AM/IF

11

AM OSC

24

VCO STOP

12

IF REQ MUTING

10

DO

DI

CL

CE

L OUT

R OUT

AM IF IN

AM MIX OUT

13

14

4

2

BUFFER

R-CH

Q11

IFT11

LPF11

LPF

L-CH

A

(Page 22)

• R-CH is omitted due to same as L-CH.

• Signal Path

: FM

: CD

: DIGITAL OUT

OPTICAL PICK-UP

BLOCK

(A-MAX.3)

VCC

PD1

PD2

I5-10

I1-6

LD GND

GND

SW

RB41

AM FRONT-END

2

11

+5V

Q101

LD

PD

F-

F+

T-

T+

LD

DRIVE

SPINDLE

M102 SLED

MOTOR

M101

MOTOR

1

M

10

RF AMP

IC103

VCVC

VFC

A

B

C

D

E

F

LD

PD

SW

RFAC

RFDCO

RFDCI

FEI

TE

TE BAL

IC102

CH1RI

CH1FI

CH2RI

CH2FI

CH3RI

CH3FI

MUTING

27 12

25

6

7

8

9

10

11

1

2

MOTOR/COIL DRIVE

CH1RO

13

CH1FO

14

CH2RO

11

CH2FO

12

CH3RO

18

CH3FO

17

CH4RO

16

CH4FO

15

8

7

3

6

9

DIGITAL SIGNAL PROCESSOR

15

28

29

FE

16

17

18

B+

(+5V)

19

RV101

E-F

BALANCE

3

2

6

5

23

24

25CH4INS

20

51

43

39

41

40

27

33

32

31

30

29

28

26

B+

(+7.4V)

DIGITAL SERVO

D/A CONVERTER

IC101

D OUT

RFAC

RFDC

L OUT

FE

R OUT

TE

SE

SSTP

FFDR

FRDR

TFDR

TRDR

SRDR

SFDR

MDP

DATA

CLOK

XLAT

SQCK

SCLK

SCOR

SQSO

SENS

XTAI

XTAO

XRST

60

72

75

20

66

67

R-CH

5

7

6

2

9

1

8

3

13 12 12

X101

16.9344MHz

AM RF IN

21

AM OSC

23

VCC

9

AFC

22

IC201

OPTICAL

DIGITAL

OUT

TUNED

6

STEREO

7

OPTICAL

CD DIGITAL OUT

L OUT

B

(Page 22)

11 10 34

IC202

D51

9856

Q102

+3.3V

REG

DVDD+3.3V

DO

DI

CL

CE

MASTER CONTROL

IC501(1/2)

TUNED

3

STEREO

2

ST MUTING

21

ST DIN

25

ST DOUT

23

ST CLK

27

ST CE

22

HOLD

40

BU PWM2

26

BU PWM3

24

BU PWM1

28

35

CD DATA

37

CD CLK

42

XLT

33

SQ CLK

19

SCOR

32

SQ DATA

34

SENS

OPEN SW

CLOSE SW

BU UP/DOWN SW

XRST

43

LOAD IN

T SENS

IC701

44

45LOAD OUT

49

46

47

48

9

MOTOR

DRIVE

7

TBL ADDRESS

4

2

IC711

SENSOR

M

S701

OPEN/CLOSE

S711

BU UP/

DOWN

M721 TURN

MOTOR

2121

HCD-DX80

6-2. BLOCK DIAGRAM – MAIN Section –

HP901

HEAD

ERASE

HEAD

L

R

L

R

PB

A

B

J101

J401

J601

DECK-A

DECK-B

L-CH

LOUT

L-CH

R-CH

M901

CAPSTAN

MOTOR

57

S1001

(A. PLAY)

S1002

(B. PLAY)

S1003 (A. HALF)

S1006 (B. HALF)

S1005 (REC. A)

S1009 (REC. B)

(DECK-A)

(DECK-B)

A TRG M+

B TRG M+

A

M

–

PB EQ AMP IC303

PB EQ AMP IC304

RV304

B

+

BIAS

IC106

2

1

3

INPUT SELECT

IC105

12

11

75

C332,L301

REC

T301

IC1001

REEL

DET

IC1002

REEL

DET

MOTOR

BIAS TRAP

Q1001

CONT

109

AB

RV302

PB

LEVEL (A)

RV303

PB

LEVEL (B)

1

2

3

BIAS

OSC

Q302,303

(TCA+6V)

PM901PM902

RV1002

NORM SPEED

RV1001

HIGH SPEED

13

REC/PB SWITCH

IC302

Q301

B+

Q393,394

A TRIG DRIVE

Q391,392

B TRIG DRIVE

R CH

Q141

BIAS

DC

4

B+

(TC+12V)

A+12V

56

57

70

91

89

90

51

52

Q395

CAP MOTOR

SPEED CONT

Q396,397

CAP MOTOR

DRIVE

(Page 21)

MD/VIDEO

(AUDIO)

GAME INPUT

VIDEO OUT

VIDEO

AUDIO

HRPE901

REC/PB

HEAD

Q104

SWITCH

Q304,305

A PLAY

B PLAY

A HALF

B HALF

A SHUT

B SHUT

A TRIG

B TRIG

69

78

TC RELAY

GAME/VIDEO

54

CAP M H/L

55

48

46

36

33

32

CAP M CONT

A

B

NORM

CROM

REC

EQ

BIAS SW

S1004

(A. 120/70)

S1008

(A. 120/70)

70

120

38

DECK PROCESSOR

RV301

REC

LEVEL (L)

REC

PB

39

IC301

SATELLITE AMPLIFIER

(TA-DX80)

DOLBY

B

PB A/B

A120/70

B NORM/CROM/METAL

17

16

18

19

67

66

PB A/B

TO

STANDBY LED

DOL

PAS

BIAS ON/OFF

NORM/HIGH

ALC ON/OFF

20

15

68

65

ALC

EQ H/N

CONT A

CONT B

BOOSTER SW

RM ON/OFF

22

61

BIAS

REC MUTING

NR ON/OFF

23

24

60

59

NR ON/OFF

REC

43

PB

LM ON/OFF

MS OUT

REC /PB/PASS

25

26

58

53

AMS IN

R/PB PAS

TC MUTING

95

IC104

1

40

(TA-DX80) SATELLITE AMPLIFIER (TA-DX80)

MASTER CONTROL

IC501(2/2)

BOOSTER SW

FREQ B94FREQ A

97

INPUT SELECT

G EQ

IC101

VOL OUT2

IN2A

40

IN2C

38

IN2D

37

VSELA OUT2

34

3

2

80

81

GEQ DATA

SIRCS IC603

LINE MUTE

PROTECT

STK MUTE

RELAY

ON/OFF

GEQCLK

SIRCS

4

R-CH

INVOL OUT2

35

IN2B

39

DATA

21

CLOCK

22

IC701

13

L IN

Q831, 832

RELAY DRIVE

X501

X502

32.768kHz

16MHz

10

11

15

X IN

XC IN

XC OUT

S752

DISPLAY

24

13

X OUT

POWER KEY

74

S796

?/1

6

5

Q101,102

Q503

SWITCH

85

REAR RELAY

Q794

LED

DRIVER

IC102

DBFB CONT

DBFB

79

STBY LED

75

7

R-CH

DBFB ON/OFF

D794

?/1

Q504,505

MUTING

82

LINE MUTING

CONT

MUTING Q103

Q503,504

MUTING

CONT

83

STK MUTING

STBY RELAY

84

87

88

PROTECT

FRONT RELAY

18

MUTING

Q581

30

29

IIC DATA

CD POWER

100

POWER

41

IIC CLK

AC CUT

12

IC501

AMP

12

M RESET

38

RESET

D841

10

J722

MIC

CD D+5V(SW)

CD A+5V(SW)

VREF (IC501)

Q575

TC D+5V

AUDIO +5V

D +5V

VCC (IC501)

TC M+9V

CDM M+7V

LED +7V

STBY +5V

IC502

RESET13

Q861

MUTING

CONT

+B

(+30V)

TH701

A+12V

TC A+12V

MIC A+12V

ST A+12V

Q551

OVER LOAD DETECTOR

D579

MUTING

Q862

D577

Q505,506

OVER HEAT DETECTOR

LIMITER

Q821,822

PROTECT

DETECTOR

R-CH

3

2

Q721

IC911 Q911,912

+5V

3

REG

D952

D953

D509

D510

D580

D920-922

D511

D508

TM801

L

SPEAKER

M961 (FAN)

IC601

TUNER

TAPE A/B

MD/VIDEO

GAME IN

DISC1

DISC2

DISC3

REC/PAUSE

ENTER

JW973

JW972

F971

JW971

(MX)

JW990

(MX)

R

P1

P39

G1

G13

VKK

JW986

CD

IMPEDANCE

USE 6~16Ω

PHONES

6

10

.

12

22

.

24

41

.

43 47

5

1 .

100

93

55

57

54

56

58

59

74

75

52

53

48

(EXCEPT MX)

J631

-VG

FL601

FLOURESCENT

INDICATOR TUBE

F1 F2

D608, 609 D612-618

Q601-605

LED

DRIVER

D791-793

Q791-793

LED

DRIVER

Q751

LED

DRIVER

Q752

LED

DRIVER

JW975

(MX)

S901 120

220

230-240

120

220

230-240

(EXCEPT MX)

PAUSE REC/START

VOLTAGE SELECTOR

RY972

D751

D752

ENTER

SATLLITE

AMPLIFIER

(TA-DX80)

AC OUT

TO

AC IN

RY801

Q824,825

RELAY DRIVE

Q823

CONT

IC722

6

5

D824

D911 D910

1

EVER +5.6V

• RCH is omitted due to same as L-CH.

• Signal Path

7

Q828,829

PROTECT

SWITCH

D822

POWER

AMP

(IC501)

B+ (+13.9v) (RY801)

3

: PB (DECK A)

: PB (DECK B)

: REC (DECK B)

: FM

: CD

IC971

+5.6V

REG

S751

VOLUME

-VG

(-32.2V)

+VH

-VH

+VL

-VL

1

IC602

SPEANA

6

5

4

3

S768-781

FUCTION

S753-758 S760-765

FUCTION

S601-606 S791-795

FUCTION

ROTARY

ENCODER

Q941

REG

D543

D541

D901-904

D906-909

D972-975

Q971

RELAY

DRIVE

• Abbreviation AR E51 MX SP E2 BR

D502

PROTECT

Q831

FAN ON

SWITCH

RV722

MIC

LEVEL

IC722

1

IC921

+12V

3

1

REG

CD POWER

1

SWITCH

IC951

+5V

3

1

REG

IC961

+9V

3

1

REG

IC616

+3.3V

3

+3.3V

REG

R CH

Q891,892

FAN

DRIVE

R-CH

78

71

17

X601

4MHz

F1

F2

12

11

D977

RY971

T910

T972

67

.

72

73

64

65

66

80

79

83

82

60

61

77

BPF

KEY

-V

: Argentina model : Chilean and Peruvian model : Mexican model : Singapore model : 120V Area in E model : Bragilian model

DISPLAY CONTROL

HEADPHONE

BPF 0

BPF 5

ALL BAND

KEY0

KEY1

KEY2

VOL A

VOL B

XIN

XOUT

I2C DATA

I2CCLOCK

RESET

2222

6-3. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

d

(In addition to this, the necessary note is printed in each block)

HCD-DX80

Note on Printed Wiring Boards:

• X : parts extracted from the component side.

• : Pattern from the side which enables seeing.

• indication of transistor.

C

These are omitted.

Q

B

CE

These are omitted.

Q

B

E

Note on Schematic Diagram:

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

• All resistors are in Ω and 1/ specified.

f

•

• C : panel designation.

Note: The components identified by mark 0 or dotted line

• A : B+ Line.

• B : B– Line.

• H : adjustment for repair.

• Voltages and waveforms are dc with respect to ground

• Voltages are tak en with a V OM (Input impedance 10 MΩ).

• 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. Voltage variations may be noted due to normal produc-

tion tolerances. Voltage variations may be noted due to normal produc-

tion tolerances.

F : FM f : AM E : PB (DECK A) d : PB (DECK B) G : REC (DECK B) J : CD c : digital out

AR : Argentina model BR : Brazilian model E2 : 120 V AC Area in E model E51 : Chilean and Peruvian model MX : Mexican model SP : Singapore model

4

W or less unless otherwise

• Circuit Boards Location

DRIVER board

MAIN TRANS board

CD-SWITCH board

PANEL board

PAD SWITCH board

LEAF

SW board

HEAD (A) board

HEAD (B) board

MOTOR board

ADDRESS SENSOR board

BD board

SENSOR board

VIDEO SWITCH board

SUB TRANS board

MAIN board

POWER AMPLIFIER boar

2323

Sony HCD-DX80 User Manual

TABLE OF CONTENTS

GENERAL

2-1. DISASSEMBLY FLOW

DISASSEMBLY

case (Top)

loading panel

CD mechanism deck (CDM58E-30BD60)

front panel section

2-6. TAPE MECHANISM DECK (TCM-230AWR41)

back panel section

MAIN board

2-9. LEAF SW BOARD, HEAD (A) BOARD, HEAD (B) BOARD

base unit (BU-30BD60)

TEST MODE

MECHANICAL ADJUSTMENTS

ELECTRICAL ADJUSTMENTS

DIAGRAMS

6-1. BLOCK DIAGRAM – TUNER/CD Section –

6-2. BLOCK DIAGRAM – MAIN Section –

6-3. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS