Panasonic SLPH-660-EG Service manual

Portable CD Tuner System

SL-PH660EG

Colour

(A)..................Blue Type

TD0506035C2

Specification

lRadio

Frequency rang:

FM: 87.5-108.0 MHz (50 kHz steps)

AM:

lCD player

Sampling frequency: 44.1 kHz

Decoding: 16 bit linear

Beam source:

Number of channels: 2 channel, stereo

Frequency response: 100 Hz-16 kHz (6 db down)

Wow and flutter: Less than measurable data

D/A converter: MASH (1 bit DAC)

lGeneral

Speakers: Full range 5cm, Round 4Ω x2

Output power:

Power supply:

DC input (via included AC adaptor): DC 4.5V

522-1629 kHz (9 kHz steps)

Semiconductor laserr

wavelength 780 nm

330 mW +330 mW (RMS...max.)

Batteries: DC 3V Parallel (4 R6/LR6,AA

batteries)

C adaptor input; AC230V, 50 Hz

Power consumption: AC adaptor; 9 W

Dimensions (WxHxD): 234.5 x 180.5 x 70mm

Mass: 850 g (with batteries)

780 g (without batteries)

Waterproofing:

JIS (Japan Industrial Standards) splash-resistant specification*

*Splashing water from any direction shall have no harmful effect.

Play time:(Batteries used:4 alkaline batteries):

[Approximate times (at 25 °C,on a flat, stable surface,S-XBS is off)]

CD-DA disc: 22 hours

RADIO (FM BAND): 25 hours

· The play time may be less depending on the operating conditions.

· Play time will be considerably reduced when playing CD-RW.

AC adaptor power consumed in standby mode: 2W

Note:

Specifications are subject to change without notice.

Mss and dimensions are approximate.

SL-PH660EG

CONTENTS

Page Page

1 Accessories 2

2 Precaution of Laser Diode

3 Location of Controls

4 Handling Precautions for Traverse Deck

4.1. Handling of traverse deck (optical pick-up)

4.2. Caution when replacing traverse deck

4.3. Grounding for electrostatic breakdown prevention

5 Operation Checks and Component Replacement Procedures

5.1. Remove of the CD Lid

5.2. Remove of the Lock Cover

5.3. Removal of the Battery cover

5.4. Removal of the Rear cabinet ass 馳

5.5. Removal of the Operation chassis piece and Operation

P.C.B. ass 馳

5.6. Removal of the Operation P.C.B. (A) and Operation

P.C.B. (B)

5.7. Removal of the Speaker cups and Speakers

5.8. Removal of the LCD P.C.B.

5.9. Removal of the CAB gum

5.10. Removal of the LCD ass 馳

5.11. Removal of the Main P.C.B.

5.12. Removal of the Traverse Deck Unit

5.13. Replacement for the traverse motor

5.14. Replacement for the optical pickup

5.15. Removal of the Push knob

5.16. Removal of the Jack P.C.B. and Piece (A) and Piece (B)

5.17. Removal of the Handle

5.18. Removal of the up Ornament

5.19. Removal of the Volume knob 11

5.20. Notice for assembling the volume knob link

5.21. Remove of the Operation button

6 Troubleshooting guide

7 Checking the Operation Problems on the Traverse Deck

(Optical Pickup)

8 Automatic Adjustment Results Display Function (Self-check

Function)

8.1. How to display automatic adjustment results

8.2. Display of automatic adjustment results (self-check

function)

9 Type Illustration of ICｴs, Transistors and Diodes

10 Schematic Diagram Notes

11 Schematic Diagram

12 Printed Circuit Board and Wiring Connection Diagram

13 Block Diagram

14 Wiring Connection Diagram

15 Measurements and Adjustments

15.1. Tuner Section

15.2. Alignment Points

16 Terminal Function of ICs

16.1. IC201(C2BBGF000772): System Control/LCD Drive

16.2. IC302(AN22003A-NF): Servo Amplifier

16.3. IC501(MN662788SD): Servo Processor, Digital Signal

Processor, Digital Filter & D/A Converter

17 Cabinet Parts Location

18 Traverse Parts Location

19 Packaging

20 Replacement Parts List

1 Accessories

AC adaptor...............................................................1 pc.

(RFEA455E-S)

2 Precaution of Laser Diode

CAUTION:

This unit utilizes a class 1 laser. Invisible laser radiation is emitted from the pickup lens when the unit is turned on:

1. Do not look directly into the pickup lens.

2. Do not use optical instruments to look at the pickup lens.

3. Do not adjust the preset variable resistor on the optical pickup.

4. Do not disassemble the optical pickup unit.

5. If the optical pickup is replaced, use the manufactures specified replacement pickup only.

6. Use of control or adjustments or performance of procedures other than those specified herin may result in hazardous

radiation exposure.

CAUTION:

This product utilizes a laser diode with the unit turned

“on”, invisible laser radiation is emitted from the pickup lens. Wave length: 780nm Maximum output wadiation power from pickup: 100 µW/VDE Laser radiation from the pickup lens is safety level, but be sure the followings:

1. Do not disassemble the optical pickup unit, since radiation from exposed laser diode is dangerous.

2. Do not adjust the variable resistor on the pickup unit. It was already adjusted.

3. Do not look at the focus lens using optical instruments.

4. Recommend not to look at pickup lens for a long time.

SL-PH660EG

3 Location of Controls

Play mode selector/Tuning mode selector/Memory Display selector/Time

adjust Kitchen timer on/off

Auto off (Sleep timer)

Tone selector

Display panel

Handle

Speaker

Play/Pause

CD lid

CD lid open/close

Skip/Search/Tuning

Volume control

Stop/Turn off

Tuner on/ Band selector/ Monaural/Stereo

DC IN jack

Note

•

These speakers do not have magnetic shielding. Do not place them near televisions, personal computers or other devices easily influenced by magnetism.

•

Keep your speakers at least 10 mm (13/32") away from the system for proper ventilation.

Battery compartment

Lens

4 Handling Precautions for Traverse Deck

SL-PH660EG

The laser diode in the traverse deck (optical pick-up) may break down due to potential difference caused by static electricity of clothes or human body.

So, be careful of electrostatic breakdown during repair of the traverse deck (optical pick-up).

4.1. Handling of traverse deck (optical pick-up)

1. Do not subject the optical pick-up to static electricity as it is

extremely sensitive to electrical shock.

2. To protect the laser diode against electrostatic breakdown,

be sure that the short land of the flexible board (FFC board) should be short-circuit by solder before inserting a short pin or similar object into the tip of the flexible board. (Referto Fig. Fig.1.)

3. Take care not to apply excessive stress to the flexible board

(FFC board).

4. Do not turn the variable resistor (laser power adjustment). It

has already been adjusted. (Refer to Fig.1.)

4.2. Caution when replacing traverse deck

The traverse deck short-circuits the foil (B) to protect the laser diode against electrostatic breakdown. Be sure to cut the foil (B) before making connection. Take care not to make contact with cutting point each other. (Refer to Fig.1. )

4.3. Grounding for electrostatic breakdown prevention

4.3.1. Human body grounding

Use the anti-static wrist strap to discharge the static electricity from your body. (Refer to Fig. 2. )

Fig. 2.

4.3.2. Work table grounding

Fig. 1.

Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pick-up) is placed, and ground the sheet. (Refer to Fig. 3. )

Fig. 3.

Caution:

The static electricity of your clothes will not be grounded through the wrist strap.

So take care not to let your clothes touch the traverse deck (optical pick-up).

SL-PH660EG

5 Operation Checks and Component Replacement

Procedures

· This section describes procedures for checking the

operation of the major printed circuit boards and replacing the main components.

· For reassembly after operation checks or replacement,

reverse the respective procedures. Special reassembly procedures are described only when required.

5.1. Remove of the CD Lid

5.3. Removal of the Battery cover

5.4. Removal of the Rear cabinet ass’y

5.2. Remove of the Lock Cover

SL-PH660EG

5.5. Removal of the Operation chassis piece and Operation P.C.B. ass’y

5.6. Removal of the Operation P.C.B. (A) and Operation P.C.B. (B)

5.7. Removal of the Speaker cups and Speakers

SL-PH660EG

5.8. Removal of the LCD P.C.B.

5.10. Removal of the LCD ass’y

5.9. Removal of the CAB gum

5.11. Removal of the Main P.C.B.

5.12. Removal of the Traverse Deck Unit

SL-PH660EG

5.13. Replacement for the traverse motor

SL-PH660EG

5.14. Replacement for the optical pickup

5.15. Removal of the Push knob

SL-PH660EG

5.16. Removal of the Jack P.C.B. and Piece (A) and Piece (B)

5.17. Removal of the Handle

5.18. Removal of the up Ornament

5.19. Removal of the Volume knob

SL-PH660EG

5.20. Notice for assembling the volume knob link

5.21. Remove of the Operation button

6 Troubleshooting guide

· Before repairing the unit, make the below check.

· No play:

−

− The batteries may be depleted.

− −

−

− The disc isn’t correctly set.

− −

−

− The disc is scratched or dirty.

− −

−

− There is moisture on the lens. Wait for about an hour

− −

and then try again.

−

− If there is no data between sessions on a multi-session

− −

disc, play may not be possible.

−

− If the disc contains data with differe nt formats, sound

− −

may be muted and play may not be possible.

· No sound or there is a lot of noise.:

−

− Turn the volume up.

− −

−

− Keep this unit away from mobile telephones.

− −

−

− The elapsed play time disappears and sound is

− −

interrupted if bumps continue repeatedly.

· Play doesn’t start from the first track:

−

− Random play modes may be on.

− −

· The unit stops working:

−

− Disconnect and reconnect the AC adaptor or remove

− −

and reinsert the batteries.

· The battery indicator fails to appear correctly:

−

− The indicator does not appear when the AC adaptor is

− −

connected.

−

− The indicator may not appear correctly under certain

− −

conditions.

· There is a lot of noise while listening to the radio:

−

− Keep the unit away from other tunes and televisions.

− −

−

− The AM antenna is in the unit, so noise may increase if

− −

you hold the unit.

· NO DISC:

−

− You haven’t inserted a disc or it isn’t inserted correctly.

− −

−

− You have inserted a disc that this unit cannot play.

− −

· OPEN:

−

− The disc lid is open.

− −

SL-PH660EG

7 Checking the Operation Problems on the Traverse Deck

(Optical Pickup)

Make sure to follow the procedures below to check the operation problems of the traverse deck (optical pickup) before replacing it.

Replace the traverse deck only after the problem is identified.

lCheck the operations described below on the traverse deck after replacing it.

*Checking Skip Search

1. Play an ordinary musical program disc.

2. Press the skip button to check for normal skip search operation (in both the forward and reverse directions).

*Checking Manual Search

1. Play an ordinary musical program disc.

2. Press the manual search button to check for smooth manual search operations at either low or high speed (in both the forward and reverse directions).

*Checking Playability

1. Play the 0.7 mm black dot and the 0.7 mm wedge on the playability test disc (SZZP1054C) and verify that no sound skip or noise occurs.

2. Play the middle tracks of the uneven test disc (SZZP1056C) and verify that no sound skip or noise occurs.

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