Sony CDPSP-55 Service manual

CDP-SP55

SERVICE MANUAL

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-213DCP/Z-NP

AEP Model

UK Model

E Model

SPECIFICATIONS

System Compact disc and digital audio

Laser Semiconductor laser (λ=780 nm)

Laser output Max. 44.6 µW*

Frequency response 20 Hz – 20 kHz Output DIGITAL OPTICAL OUT: O

system

Emission duration: continuous

*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.

tical

General

Dimensions (w/h/d)

Mass

Design and specifications are subject to change without notice.

Approx. 202 × 75 × 290 mm

Approx. 1.5 kg

MINI Hi-Fi COMPONENT SYSTEM

TABLE OF CONTENTS

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

2. GENERAL ·········································································· 6

3. DISASSEMBLY

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

4. ELECTRICAL ADJUSTMENT ·································· 11

5. DIAGRAMS

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. EXPLODED VIEWS

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

7. ELECTRICAL PARTS LIST ······································· 25

NOTES ON HANDLING THE OPTICAL PICK-UP

Parts No.

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.

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

MODEL IDENTIFICATION

— BACK PANEL —

MODEL

AEP,UK,AED models HK,MY,SP models KR model

• Abbreviation AED : North European model HK : Hong Kong model MY : Malaysia model SP : Singapore model KR : Korea model

PARTS No.

4-229-674-0s 4-229-674-2s 4-229-674-3s

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 W ARNING!!

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 .

SECTION 1

SERVICING NOTE

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

CD Text Display

• 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.

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. 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.

Hot Reset

• 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.

GC Test Mode

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.

Aging Mode

• Mode for repeating operations of the CD player and TC deck automatically.

When errors occur:

Aging stops and a message indicating that an error has occurred such as “CD MEC ERR” is displayed. (For details of errors, refer to “Error History Display Mode”.)

When no errors occur:

Aging is repeatedly performed.

Procedure:

1. Load any CD and a tape.

2. Select the function “ CD ” using the FUNCTION knob (TA).

3. While pressing the TUNING MODE button (ST) and H button (CDP), press the ?/1 button (TA).

4. “AGING” is displayed on the fluorescent display tube briefly.

5. Operations are performed in the following sequence during aging. Every pressing of DISPLAY button (ST) changes the display in the CD display and TAPE display.

CD : Cassette :

REW (Shut off) "TAPE AG-1"

Reading of TOC

Playback of first track (3sec.)

Playback of last track (3sec.)

CD tray open

CD tray close

6. To end aging, execute the cold reset.

Error History Display Mode

Mode for checking the history of errors which have occurred in the CD player. Execute this mode after ending the aging mode.

PLAY

REV PLAY

REW

OPEN

(2 min) "TAPE AG-2"

(Shut off) "TAPE AG-3"

(2 min) "TAPE AG-4"

(Shut off) "TAPE AG-5"

(Shut off) "TAPE AG-6"

(Shut off) "TAPE AG-7"

(Shut off)

"TAPE AG-8"

"TAPE AG-9"

Procedure:

1. Select the function “ CD ” using the FUNCTION knob (TA).

2. While pressing the TUNING MODE button (ST) and S button (CDP), press the ?/1 button (TA).

3. “EMC@@EDC**” id displayed. @@ : Number of mechanism errors (Last 3 errors) ** : Number of errors (NO DISC ERROR) which occurred after chucking (Last 3 errors)

4. To end, press the ?/1 button (TA) and turn OFF the power.

Note: To erase the error history, perform cold reset.

(While pressing the TUNING MODE button (ST) and ML button (CDP), press the ?/1 button (TA).)

SECTION 2

GENERAL

This section is extracted from instruction manual.

1 PLAY MODE button 2 REPEAT button 3 H button 4 S button 5 s button

1 2

3 4 5

6 lm button 7 ML button 8 A button 9 S indicator q; H indicator

Press . or > to set the hour, then

The minute indication flashes.

press ENTER/YES.

Step 2: Setting the time

You must set the time beforehand to use the timer

functions.

The clock is on a 24-hour system for the European

Press . or > to set the minute,

then press ENTER/YES.

model, and a 12-hour system for other models.

The 24-hour system is used for illustration

purposes.

Set the time before turning on the system.

The clock starts.

If you made a mistake

Start over from step 1.

`/1

To change the preset time

You can change the preset time while the system

2,3

CLOCK” appears, then press ENTER/YES.

is on.

1 Press CLOCK/TIMER SET.

2 Press . or > repeatedly until “SET

3 Repeat steps 2 and 3.

2,32,3

while the system is off. If you press DISPLAY at

this time, the display back light lights up, making

• The built-in clock shows the time in the display

Tips

the clock easier to see.

seconds, and the lower dot flashes for the last 30

seconds of each minute.

• The upper dot of the colon flashes for the first 30

Press CLOCK/TIMER SET while the

system is off.

The hour indication flashes.

SECTION 3

)

DISASSEMBLY

Set Case Front Panel Assy

3-1. CASE

1 two screws (case 3 TP2)

Main Board (Page 8)

CD Mechanism Deck (CDM55C-K6BD38)

Holder Assy Optical pick-up

(Page 9) (Page 10)

4 case

Cam, Gear

(Page 9) (Page 8)

BD Board

(Page 10)

3-2. FRONT PANEL ASSY

1 two screws (case 3 TP2

1 connector (CN711)

5 front panel assy

claws

4 screw (BVTP 3x12)

3 two foot assy's

2 two screws

(BVTP 3x12)

3-3. CD MECHANISM DECK (CDM55C-K6BD38)

)

two claws

5 CD mechanism deck

3 screw (BVTP 3x8)

2 connector

(CN112)

1 flat type wire (19 core (CN713)

3-4. MAIN BOARD

2 main board

1 screw (BVTP 3x8

3-5. CAM, GEAR

8 gear (B)

2 Push the claw in tne direction of arrow C.

5 bushing

7 roller

0 cam (CDM55)

3 Pull out the tray.

4 belt (CDM55)

6 pulley (LDG)

1 Pull out the tray in the arrow direction A,

and release the lock while pressing this claw in the arrow direction B.

Release

9 gear (A)

3-6. HOLDER ASSY

1 floating screw (PTPWH M2.6)

2 Remove the Holder (BU) ass in the direction of arrow A.

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