Read Sony CMT-ED1 / HCD-ED1 / HCD-ED1A Service Manual online
– 1 –
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
Tape Transport Mechanism Type
CMAL2Z076A
SERVICE MANUAL
COMPACT DISC DECK RECEIVER
MICROFILM
HCD-ED1 is the tuner, deck, CD and
amplifier section in CMT-ED1.
amplifier section in CMT-ED1.
US Model
Canadian Model
AEP Model
UK Model
E Model
HCD-ED1
— Continued on next page —
This stereo system is equipped with the Dolby* B-
type noise reduction system.
type noise reduction system.
*Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol a are trade-
marks of Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol a are trade-
marks of Dolby Laboratories Licensing Corporation.
CD
SECTION
TAPE
DECK
SECTION
SPECIFICATIONS
– 2 –
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 REMPLACER CES COMPOSANTS
QUE PAR DES PIÈCES SONY DONT LES NUMÉROS
SONT DONNÉS DANS CE MANUEL OU DANS LES
SUPPLÉMENTS PUBLIÉS PAR SONY.
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
ing safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.
LEAKAGE
The AC leakage from any exposed metal part to earth Ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers). Leak-
age current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microampers). Leak-
age 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.
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 pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)
V, so analog meters must have an accurate low-voltage scale.
The Simpson 250 and Sanwa SH-63Trd are examples of a pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable. (See Fig. A)
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.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER PROD-
UCT MARKING is located on
the rear exterior.
a CLASS 1 LASER product.
The CLASS 1 LASER PROD-
UCT MARKING is located on
the rear exterior.
This caution
label is located
inside the unit.
label is located
inside the unit.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
other than those specified herein may result in hazardous ra-
diation exposure.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
• 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.
AC
voltmeter
(0.75V)
voltmeter
(0.75V)
1.5k
Ω
0.15
µ
F
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
– 3 –
TABLE OF CONTENTS
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
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
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
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
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
SERVICING NOTE
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
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.
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, ob-
serve from more than 30 cm away from the objective lens.
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
MODEL IDENTIFICATION
— AC POWER SUPPLY CODE —
— AC POWER SUPPLY CODE —
AEP, East European, CIS model
(Without voltage selector)
Singapore, Malaysia,
Hong Kong model
Hong Kong model
(With voltage selector)
UK model
US, Canadian model
– 4 –
SECTION 1
GENERAL
1
20
19
18
17
16
15
14
13
12
2
3
4
5
6
7
8
9
10
11
1
9
8
7
6
5
2
3
4
AEP,UK,
East European
,CIS model
East European
,CIS model
US,Canadian,
Singapore,Malaysia,
Hong Kong model
Singapore,Malaysia,
Hong Kong model
Location of Parts and Controls
FRONT PANEL
REAR PANEL
1 AM ANTENNA
2 MD IN jacks
3 MD OUT jacks
4 SPEAKER jacks
5 VOLTAGE SELECT OR s witc h
2 MD IN jacks
3 MD OUT jacks
4 SPEAKER jacks
5 VOLTAGE 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 PHONES jack
8 AM ANTENNA terminals
9 OPTICAL terminal
1 Displa y windo w
2 DBFB lamp
3 CD SYNC lamp
4 REC lamp
5 ª button
6 BAND FM
2 DBFB lamp
3 CD SYNC lamp
4 REC lamp
5 ª button
6 BAND FM
∏
button
7 POWER b utton
8 TUNING
8 TUNING
≠
º – b utton
9 § button (Push open)
10 VOLUME – b utton
11 DECK Lid
12 VOLUME + b utton
13 TUNING ‚
11 DECK Lid
12 VOLUME + b utton
13 TUNING ‚
±
+ b utton
14 FUNCTON b utton
15 BAND AM
15 BAND AM
π
button
16 · button
17 SOUND MODE b utton
18 WIDE lamp
19 Remote sensor
20 NEAR F. lamp
17 SOUND MODE b utton
18 WIDE lamp
19 Remote sensor
20 NEAR F. lamp
