Sony HCDED-1 Service manual

HCD-ED1

SERVICE MANUAL

Ver 1.1 2001. 06
With SUPPLEMENT-1
(9-922-706-81)

HCD-ED1 is the tuner, deck, CD and
amplifier section in CMT-ED1.

This stereo system is equipped with the Dolby* B­type noise reduction system.

*Dolby noise reduction manufactured under license

from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol a are trade­marks of Dolby Laboratories Licensing Corporation.

CD

SECTION

T APE

DECK

SECTION

Model Name Using Similar Mechanism NEW
Base Unit Type BU17-BD19
Optical Pick-up Type KSS-213BA/S-N
Model Name Using Similar Mechanism NEW
T ape T r ansport Mechanism T ype CMAL2Z076A

US Model

Canadian Model

AEP Model

UK Model

E Model

SPECIFICA TIONS

— Continued on next page —

9-922-706-12

2001F0200-1
© 2001.6

COMPACT DISC DECK RECEIVER

Sony Corporation

Home Audio Company
Shinagawa Tec Service Manual Production Group

– 1 –

CAUTION

AC
voltmeter
(0.75V)

1.5k

Ω

0.15µF

Parts on Set

Earth Ground

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.

SAFETY CHECK-OUT

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

LEAKAGE

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

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

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

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

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.

This caution
label is located
inside the unit.

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

SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED 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.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE ! SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE
FONCTIONNEMENT. NE REMPLA CER CES COMPOSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS
SONT DONNÉS DANS CE MANUEL OU DANS LES
SUPPLÉMENTS PUBLIÉS PAR SONY.

– 2 –

SERVICING NOTE

TABLE OF CONTENTS

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 g enerated 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.

1. GENERAL .......................................................................... 4

2. DISASSEMBLY

2-1. CD Door, CD Base and Base Unit........................................ 6

2-2. Rear Panel ........................................................................... 6

2-3. Bottom Cover and Front Panel Block ................................... 7

2-4. Door Cover Assy and Mechanical Deck (Cassette) .............. 7

3. MECHANICAL ADJUSTMENTS ............................... 8

4. ELECTRICAL ADJUSTMENTS ................................. 8

5. DIAGRAMS

5-1. Circuit Boards Location...................................................... 13

5-2. IC Pin Function ...................................................................14

5-3. Schematic Diagram — CD Section — ............................... 16

5-4. Printed Wiring Board — CD Section — ............................. 19

5-5. Schematic Diagram — Input/Output Section — ................ 21

5-6. Printed Wiring Board — Input/Output Section — .............. 23

5-7. Printed Wiring Board — Deck Section — .......................... 25

5-8. Schematic Diagram — Deck Section — ............................ 27

5-9. Schematic Diagram — Display Section — ........................ 30

5-10. Printed Wiring Board — Display Section — ................... 33

5-11. Schematic Diagram — Power Section — ........................ 36

5-12. Printed Wiring Board — Power Section — ..................... 39

5-13. IC Block Diagrams ........................................................... 41

MODEL IDENTIFICATION
— AC POWER SUPPLY CODE —

AEP, East European, CIS model

(Without voltage selector)

Singapore, Malaysia,
Hong Kong model

(With voltage selector)

UK model

6. EXPLODED VIEWS

6-1. CD Section ......................................................................... 45

6-2. Rear Panl Section................................................................ 46

6-3. Front Panel Section ............................................................. 47

6-4. Mechanism Deck Section (Cassette) .................................. 48

6-5. Base Unit Section (BU17-BD19)........................................ 49

7. ELECTRICAL PARTS LIST ........................................ 50

US, Canadian model

– 3 –

Location of Parts and Controls

FRONT PANEL

1

2
3

4

5
6

7
8

9

20

SECTION 1

GENERAL

19
18
17

16
15

14

13

1 Displa y windo w
2 DBFB lamp
3 CD SYNC lamp
4 REC lamp
5 ª button
6 BAND FM ∏ button
7 POWER b utton
8 TUNING ≠ º – button

9 § button (Push open)
1 0 V OLUME – b utton
1 1 DECK Lid
1 2 VOLUME + button
1 3 TUNING ‚± + button
14 FUNCTON b utton
1 5 BAND AM π button
16 · button
17 SOUND MODE b utton
1 8 WIDE lamp
19 Remote sensor
2 0 NEAR F. lamp

10

11

REAR PANEL

2

3

12

1

1 AM ANTENNA

2 MD IN jacks

9

8

3 MD OUT jacks

4 SPEAKER jacks

5 V OLT AGE SELECT OR s witc h

(Malaysia, Singapore , Hong K ong models onl y)
6 FM ANTENNA terminal
7 PHONES jack
8 AM ANTENNA terminals
9 OPTICAL terminal

7

6

4

AEP,UK,
East European
,CIS model

US,Canadian,
Singapore,Malaysia,
Hong Kong model

5

– 4 –

REMOTE

1

10

20

2

19

3

4

5

6

18

17

16

15
14

7

8

13
12

1 DISPLAY button
2 DBFB b utton
3 CD b utton
4 TUNER/BAND button
5 TAPE œ button
6 DIR MODE button
7 CD REPEA T button
8 b uttons

9 ON/OFF b utton
1 0 b uttons
1 1 VOL (+/–) b utton
12 STEREO/MONO b utton
1 3 TUNING/PLAY MODE button
14 DOLBY NR b utton
15 r REC b utton
1 6 (re wind/fast f orwar d) b uttons
1 7 AMS* b uttons
18 (stop) b utton
19 (pause) b utton
20 POWER s witc h

*AMS=Auto Music Sensor

11

9

This section is extracted from
instruction manual.

– 5 –

DISASSEMBLY

Note: Follo w the disassemb ly pr ocedure in the n umerical or der given.

2-1. CD DOOR, CD BASE AND BASE UNIT

5

Two hook screws

7

Three screws (K3x8)

!¡

CD base

6

Three screws (K3x8)

SECTION 2

2

Bar rubber

1

4

Hinge spring

9

Three screws (K3x8)

8

Two hook screws

Open the CD door.

3

Hinge pin

2-2. REAR PANEL

5

!∞

Side bracket

Two springs

(compression)

!£

!¢

Two washers

!º

Three screws (K3x8)

!ª

Base unit

!•

Two springs (compression)

!¶

Two washers

!§

Two screws (TPG P2x8)

!™

Wire (Flat type)

Two screws (TPG P2x8)

7

Rear panel

1

Two screws

(BVTP 3x10)

2

Screw

(BVTP 3x8)

3

Two screws

(BVTP 3x8)

– 6 –

6

Side bracket

4

Three screws

(BVTP 3x8)

2-3. BOTTOM COVER AND FRONT PANEL BLOCK

r

k

5

Front panel block

4

Two claws

1

Two screws

(BVTP 3x8)

3

2

Two screws

(BVTP 3x8)

Bottom cove

2-4. DOOR COVER ASSY AND MECHANICAL DECK (CASSETTE)

A

3

Door spring

1

Open the Door cover ASSY. (Push the A portion.)

2

Door cover assy

4

Four screws

(BVTP 3x10)

5

Mechanical dec

(cassette)

– 7 –

SECTION 3

MECHANICAL ADJUSTMENTS

SECTION 4

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

Torque Torque meter

FWD

FWD
back tension

REV

REV
back tension

FF/REW

FWD tension

CQ-102C

CQ-102C

CQ-102RC

CQ-102RC

CQ-201B

CQ-403A

Meter reading

28 to 71g • cm

(0.39 – 0.99 oz • inch)

1 to 7g • cm

(0.01 – 0.10 oz • inch)

28 to 71g • cm

(0.39 – 0.99 oz • inch)

1 to 7g • cm

(0.01 – 0.10 oz • inch)

56 to 122g • cm

(0.78 – 1.69 oz • inch)

100g or more

(3.53 oz or more)

DECK SECTION 0 dB=0.775V

1. Demagnetize the record/playback head with a head damagnetizer.
(Do not bring the head demagnetizer close to the erase head.)

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

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

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

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

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

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

Tape

P-4-A100

WS-48B

P-4-L300

Record/Playback Head Azimuth Adjustment

Procedure :

1. Mode : Playback

test tape
P-4-A100
(10kHz, –10dB)

Signal

10 kHz, –10 dB

3 kHz, 0 dB

315 Hz, 0 dB

MD OUT (JK301)

Used for

Azimuth Adjustment

Tape Speed Adjustment

Level Adjustment

level meter

REV tension

CQ-403R

100g or more

(3.53 oz or more)

set

+
–

– 8 –

2. Turn the adjustment scre w and check output peaks. If the peaks

r

r

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

output
level

within
1dB

within 1dB

Tape Speed Adjustment

Procedure :

Mode : Playback

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

set

frequency counte

+
–

MD OUT (JK301)

R-CH

screw
position

peak

L-CH
peak

R-CH
peak

screw
position

3. Mode : Playback

test tape
P-4-A100
(10kHz, –10dB)

in phase

MD OUT (JK301)

L

set

R

MD OUT (JK301)

Waveform of oscilloscope

45

°

90

°

good

135

oscilloscope

°

180

wrong

°

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

1. Insert the WS-48B into the deck, and playback.

2. Adjust the VR770/RELAY board so that the frequency counter
reading becomes 3000 ± 90 Hz.

Adjustment Location : RELAY board

Sample Value of Wow and flutter

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

Playback Level Adjustment

Procedure :

Mode : Playback

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

set

MD OUT (JK301)

level mete

Deck is VR703 (L-CH) and VR704 (R-CH)
so that adjustment within the following adjustment level.

Adjustment level :

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 : TAPE PREAMP board

Adjustment Location :

FWD side

Adjustment screw

REV side

– 9 –

Record Bias Adjustment

r

r

2. Mode: Playback

Procedure :

1. Mode : Record

MD IN (JK301)

1) 315Hz

2) 10kHz

AF OSC

600

attenuator

}

50 mV (–23.8 dB)

Ω

blank tape
CS-123

set

2. Mode : Playback

recorded
position

set

MD OUT (JK301)

level mete

Confirm playback the signal recorded in step 1 become adjustment
level as follows.
If these levels do not adjustment level, adjustment the VR701 (L­CH) and VR702 (R-CH) on the TAPE PREAMP board to repeat
steps 1 and 2.

recorded
position

set

MD OUT (JK301)

level mete

Confirm playback the signal recorded in step 1 become adjustment
level as follows.
If these levels do not adjustment level, adjustment the VR705 (L­CH) and VR706 (R-CH) on the TAPE PREAMP board to repeat
steps 1 and 2.

Adjustment level :

Playback level : 47.2 to 53.0 mV (–24.3 to –23.3 dB)
Adjustment Location : TAPE PREAMP board

Adjustment Location
[RELAY BOARD] (Component Side)

VR770

Adjustment level : Playback output of 10kHz level diffrence

against 315Hz reference should be ±0.5 dB.

Adjustment Location : TAPE PREAMP board

Record Level Adjustment

Procedure :

1. Mode: Record

MD IN (JK301)
315Hz 50 mV (–23.8 dB)

AF OSC

attenuator

600

Ω

set

blank tape
CS-123

[TAPE PREAMP BOARD] (Component Side)

VR704

VR703 VR706

VR702

VR701

42

1

IC703

VR705

22

21

– 10 –

CD SECTION

symmetry

A

B

within 2.4

±

0.7 Vp-p

Note:

1. CD Block is basically designed 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 lens cleaning liquid
when the signal level is low than specified value with the fol­lowing checks.

5. Adjust the focus bias adjustment when optical block is replaced.

Focus Bias Adjustment

oscilloscope

BD board

TP (RF)
TP (VC)

Procedure:

1. Connect oscilloscope to test point TP (RF).

2. Turned Power switch on.

3. Put disc (YEDS-18) in and playback.

4. Adjust RV101 so that the waveform is clear.
(Clear RF signal waveform means that the shape “◊” can be
clearly distinguished at the center of the waveform.)

5. After adjustment, check the RF signal level.

• RF signal

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

+
–

S Curve Check

oscilloscope

BD board

TP (FEO)
TP (VC)

+
–

Procedure :

1. Connect oscilloscope to test point TP (FEO).

2. Connect between test point TP (FOK) and Ground by lead wire.

3. Turn Power switch on.

4. Put disc (YEDS-18) in and turned Power switch on again and
actuate the focus search. (actuate the focus search when disc
table is moving in and out.)

5. Check the oscilloscope waveform (S-curve) is symmetrical be­tween A and B. And confirm peak to peak level within 2.4 ± 0.7
Vp-p.

S-curve waveform

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.

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

level : 1.3 ± 0.3 Vp-p

RF Level Check

oscilloscope

BD board

TP (RF)
TP (VC)

+
–

Procedure :

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

2. Turned Power switch on.

3. Put disc (YEDS-18) in and playback.

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

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

clearly distinguished at the center of the waveform.

RF signal waveform

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

level : 1.3 ± 0.3 Vp-p

– 11 –

E-F Balance (1 Track Jump) Check

V

(Without remote commander)

oscilloscope

BD board

TP (TE)
TP (VC)

+
–

Procedure :

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

2. Turn Power switch on.

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

4. Press the “P (Pause)” button. (Becomes the 1 track jump mode)

5. Confirm that the oscilloscope waveform is symmetrical on the
top and bottom in relation to 0Vdc, and check this level.

1 track jump waveform

Adjustment Location:
[BD BOARD] — Component Side —

RF

RV101

IC101

RV103

TEO

VC

FEO

RV102

TEI

FEI

FOK

IC102

A

0

B

LEVEL : 300 ± 100 mVp-p

Specified level: • x 100 = less than ± 7%

A – B

2 (A + B)

• A + B = 300 ± 100 mVp-p

6. Remove the lead wire connected in step 1.

Focus/Tracking Gain Adjustment (RV102, RV103)

This gain has a margin, so even if it is slightly off.
There is no problem.
Therfore, do not perform this adjustment.
Please note that it should be fixed to mechanical center position
when you moved and do not know original position.

IC104

PCK

GND

– 12 –

5-1. CIRCUIT BOARDS LOCATION

d

FM/AM TUNER

THIS BLOCK IS SUPPLIED
AS THE ASSEMBLED BLOCK

TAPE PREAMP board

SECTION 5

DIAGRAMS

FUN/SURROUND boar

VOL/POWER board

DISPLAY board

CONTROL BLK ASSY

THIS BLOCK IS SUPPLIED
AS THE ASSEMBLED BLOCK

BD board

CD DOOR SW board

RELAY board

– 13 –

5-2. IC PIN FUNCTION

• IC201 MASTER CONTROL (TC9613)

Pin No. Pin Name I/O Function

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

GND
XOUT
XIN
RESET
TUNED
STEREO
TEST
POWDEC
REMOTE
PLL CE
PLL CLK
PLL DATAI
PLL DATAO
SERVO CK
SUB Q
DATA
MUTE D
CDPOWER
CLOSESW
FSW
SENSE
MLAT
XLAT
XRST
SCOR
PLAYSW
MTRSNS
TAPEIN
MOTOR
SOL
AMS
PLYMUTE
REC/PB
DOLBYNR
RECMUTE
BIAS
REC LED
CD SYNC
WIDE
KEYIO 1
KEYIO 2
BANDAREA
N.C
LOUDSEL
N.C
FRECSW
RRECSW
AREF
AGND
GND

—

Ground

O

8 MHz Oscillator output

I

8 MHz Oscillator input

I

CPU reset input

I

Station detector input

I

Stereo signal input

I

Test pin (Connected to ground)

I

Power down detect input

I

Remote signal input

O

Chip enable output

O

Clock output

I

Data input

O

Data output

O

Servo clock output

I

Servo subq data & status input

O

Servo command data output

O

Digital mute control output

O

CD power supply output

I

Top loading close switch input

O

Servo focus down output

I

Servo status SENSE input

O

D/A MLAT output

O

Servo command latch output

O

Servo chip reset output

I

Servo SUBQ sync input

I

Tape play switch input

I

Tape motor reel sense input

I

Tape in switch input

O

Tape control output

O

Tape control output

I

Tape music search input

O

Tape play back mute signal output

O

Tape control output

O

Tape control output

O

Tape recording mute signal output

O

Tape control output

O

Record LED output

O

CD SYNC LED output

O

Wide LED output

I

AD key input (16 keys)

I

AD key input (16 keys)

—

Band area option (Not used)

—

Not used

I

Loudness initial select input

—

Not used

I

Tape forward record switch input

I

Tape reverse record switch input

I

A/D convert refrence input (+5V)

I

A/D convert Input ground input

—

Ground

– 14 –