DOWNLOAD Sony CDP-SP55 / CMT-SP55MD / CMT-SP55TC Service Manual ↓ Size: 1.58 MB | Pages: 27 in PDF or view online for FREE

1

CDP-SP55 is the CD section in CMT-SP55MD
or CMT-SP55TC.

Model Name Using Similar Mechanism

NEW

CD Mechanism Type

CDM55C-K6BD38

Base Unit Type

BU-K6BD38

Optical Pick-up Type

KSM-213DAP

AEP Model

UK Model

E Model

Dimensions (w/h/d)

Approx. 202 

× 75 × 290 mm

Mass

Approx. 1.5 kg

Design and specifications are subject to change
without notice.

System

Compact disc and digital audio
system

Laser

Semiconductor laser (

λ=780 nm)

Emission duration: continuous

Laser output

Max. 44.6 

µW*

*This output is the value
measured at a distance of 200 mm
from the objective lens surface on
the Optical Pick-up Block with
7 mm aperture.

Frequency response

20 Hz – 20 kHz

Output
DIGITAL OPTICAL OUT: Optical

2003L02-1

© 2003.12

2

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3-1.

Case ···················································································· 7

3-2.

Front Panel Assy ································································· 7

3-3.

CD Mechanism Deck (CDM55C-K6BD38) ······················ 8

3-4.

Main Board ········································································· 8

3-5.

CAM, GEAR ······································································ 9

3-6.

Holder Assy ········································································ 9

3-7.

Optical Pick-up ································································· 10

3-8.

BD Board ·········································································· 10

·································· 11

5-1.

Circuit Boards Location ··················································· 14

5-2.

Block Diagram ································································· 15

5-3.

Printed Wiring Board – BD Section – ······························ 16

5-4.

Schematic Diagram – BD Section – ································· 17

5-5.

Printed Wiring Board – Main Section – ··························· 18

5-6.

Schematic Diagram – Main Section – ······························ 19

5-7.

Printed Wiring Board – Loading Section – ······················ 20

5-8.

Schematic Diagram – Loading Section – ························· 20

5-9.

IC Block Diagram ···························································· 20

6-1.

Case and Front Panel Section ··········································· 22

6-2.

CD Mechanism Deck Section (CDM55C-K6BD38) ······· 23

6-3.

Base Unit Section (BU-6BD38) ······································· 24

······································· 25

3

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

Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.

• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be

damaged by heat.

• 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.

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.

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 objective lens.

— BACK PANEL —

• Abbreviation

AED

: North European model

HK

: Hong Kong model

MY

: Malaysia model

SP

: Singapore model

KR

: Korea model

AEP,UK,AED models

HK,MY,SP models

KR model

4-229-674-0

s

4-229-674-2

s

4-229-674-3

s

0

0

4

This unit cannot be repaired by itself.
When repairing, connect the whole system except for the speaker.

• This unit displays CD text.

Text is displayed for the first 50 track only and will not be displayed from the 51st track onwards. Do not suspect a fault in this case.
In some cases, some special characters will not be displayed and may be replaced by other characters. Do not suspect a fault in this case.

• 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.

When the power ON, press the  ?/1  button (TA) while pressing the  TUNING MODE  button (ST) and  ML buttons (CDP)
together.

2.

“COLD RESET” is displayed on the fluorescent indicator tube and reset is executed.

• This mode reset the preset data kept in the memory. The hot reset mode functions same as if the power cord is plugged in and out.

Procedure :
1.

When the power ON, press the  ?/1  button (TA) while pressing the  TUNING MODE  button (ST) and lm buttons (CDP)
together.

2.

Turn off the unit and reset is executed.

Procedure :
1.

When the power ON, press the  ?/1  button (TA) while pressing the  TUNING MODE button (ST) and PLAY MODE buttons (CDP)
together.

2.

Fluorescent indicator tube are all turned on.

3.

Press  TUNING MODE  button (ST) to enter the model destination indecation mode. “SP55    CE2” appears.

4.

Every pressing of  TUNING MODE  button (ST) changes the display in the following order.
MC Version 

t CD Version t ST Version t TC Version t TA Version t TM Version t model destination display.

5.

Press DISPLAY button (ST) and the date appears as “ 00615a ”
Every pressing of  DISPLAY  button (ST) changes the display in the Version display and model destination display.

6.

Press TUNER/BAND  button (ST) to enter the key check mode.

7.

In the key check mode, the fluorescent indicator tube displays “Key 0 Vol 0”. 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 (TA) in the clockwise direction, or decreases like “0, 9, 8 ...” if rotating
in the counterclockwise diretion.

8.

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