Panasonic SA-PM19E, SA-PM19EB, SA-PM19EG Service Manual

CD Stereo System

SA-PM19E SA-PM19EB SA-PM19EG

Colour (S)... Silver Type (K)... Black Type (For E only)

ORDER NO. MD0403117C2

Specification

n Amplifier Section

RMS Power output 10% Total harmonic distortion 1 kHz, both channels driven (Low channel) 35 W per channel (6 Ω) 8 kHz, both channels driven (High channel) 35 W per channel (6 Ω) Total Bi-Amp power 70 W per channel Output Impedance Headphone 16Ω -32Ω

n FM Tuner Section

Frequency range 87.50 - 108.00 MHz (50 kHz

steps) Sensitivity 1.5 µV (IHF) S/N 26 dB 1.5 µV

ntenna terminal(s) 75 Ω (unbalanced)

n AM Tuner Section

Frequency range 522 kHz - 1629 kHz (9 kHz

steps)

520 kHz - 1630 kHz (10 kHz

steps) Sensitivity S/N 20 dB (at 999 kHz) 560 µV/m

n Cassette Deck Section

Track system 4 track, 2 channel Heads Record/playback Solid permalloy head Erasure Double gap ferrite head Motor DC servo motor Recording system AC bias 100 kHz Erasing system AC erase 100 kHz Tape speed 4.8 cm/s Overall frequency response (+3 dB, -6 dB at Deck Out) Normal (Type I) 35 Hz - 14 kHz S/N RATIO 45 dB (A weighted) Wow and flutter 0.10% (WRMS) Fast forward and rewind times Approx. 120 seconds with C-60

cassette tape

n CD Section

Disc CD, CD-R, CD-RW, MP3 8cm/12cm Sampling frequency 44.1 kHz Decoding 16 bit linear Pickup Beam source/ Wavelength Semiconductor laser / 780 nm Number of channels Stereo Frequency response 20 Hz - 20 kHz (+1dB, -2dB) Wow and flutter Below measurable limit Digital filter 8fs

SA-PM19E / SA-PM19EB / SA-PM19EG

D/A converter MASH (1 bit DAC)

MP3 Bit rate 32kbps-320kbps Sampling frequency 32kHz, 44.1kHz, 48kHz

n General

Power supply AC 230 V, 50 Hz (E, EG)

AC 230 V - 240 V, 50 Hz (EB) Power consumption 130 W Dimensions (W x H x D) 179 x 250 x 383 mm Mass 5.24 kg Power consumption in standby mode: 0.8W

n System: SC-PM19E-S

Music Center: SA-PM19E-S

Speaker: SB-PM19E-M

n System: SC-PM19EB-S

n System: SC-PM19EG-S

n System: SC-PM19E-K

Notes:

1. Specifications are subject to change without notice. Mass and dimensions are approximate.

2. Total harmonic distortion is measured by the digital spectrum analyzer.

3. The labels “HIGH” and “LOW” on the rear of the speakers refer to High frequency and Low frequency.

Music Center: SA-PM19EB-S

Speaker: SB-PM19E-M

Music Center: SA-PM19EG-S

Speaker: SB-PM19EG-M

Music Center: SA-PM19E-S

Speaker: SB-PM19P-K

CONTENTS

Page Page

1 Caution for AC Mains Lead 2 Before Repair and Adjustment 3 Protection Circuitry 4 Handling the Lead-free Solder

4.1. About lead free solder (PbF)

5 Precaution of Laser Diode 6 Handling Precautions For Traverse Deck 7 Accessories 8 Operation Procedures 9 Assembling and Disassembling

9.1. Disassembly flow chart

9.2. Disassembly of Side Panel L & R

9.3. Disassembly of Top Cabinet

9.4. Disassembly of Deck P.C.B. & Tape Eject P.C.B.

9.5. Disassembly of Front Panel

9.6. Disassembly of Panel P.C.B., Headphone P.C.B. and Switch P.C.B.

9.7. Disassembly of Tact Switch P.C.B.

9.8. Disassembly of Rear Panel

9.9. Disassembly of Main P.C.B.

9.10. Disassembly of Transformer P.C.B.

9.11. Disassembly of Speaker Terminal P.C.B

9.12. Disassembly of Power P.C.B

9.13. Disassembly of CR16 Mechanism

9.14. Checking Procedure for Each Major P.C.B.

9.15. Procedure for Replacing Cassette Holder

9.16. Procedure for Replacing Pinch Roller and Head Block (Cassette Mechanism Unit)

9.17. Procedure for Replacing Motor, Capstan Belt A, Capstan Belt B, and Winding Belt (Cassette Mechanism Unit)

4 5 5 6

7 8

9 10 11

11 12 12 12 13

13 14 14 14 15 15 15 15 17 17

9.18. Procedure for Replacing Parts on Mechanism PCB

9.19. Replacement of CD traverse deck

9.20. Replacement of optical pickup unit (CD mechanism)

9.21. Replacement of a traverse gear A and a traverse gear B

9.22. Procedure for removing CD loading mechanism

9.23. CR16 mechanism disassembly procedure

9.24. CR16 MECHANISM ASSEMBLY PROCEDURE

9.25. Disassembly of traverse mechanism

9.26. Handling of cassette tape jam

10 Service Positions

10.1. Checking procedure

10.2. Checking the major P.C.B.

11 Self-Diagn ostic Display Function

11.1. Preparations

11.2. Setting of the Self-Diagnostic Mode

11.3. Restoring Normal Display

11.4. Clearing Self-Diagnostic Memory

11.5. Displaying Self-Diagnostic Results

12 Procedure for Checking Operation of Individual Parts of

Cassette Mechanism Unit

12.1. Operation Check with Cassette Tape

12.2. Operation Check without Cassette Tape

13 Measurem ent And Adjustments

13.1. Tuner/CD Sections

13.2. Cassette Deck Section

14 Block Diagram

14.1. CD Servo Block

14.2. Main Block

15 Notes of Schematic Diagram

20 21 22

23 24 24 31 43 44

45 45

46 46 46 46 46

49 49

51 51

53 55

SA-PM19E / SA-PM19EB / SA-PM19EG

16 Schematic Diagram 61

16.1. CD Servo Circuit

16.2. Main Circuit

61 63

16.3. Panel Circuit, Tact Switch Circuit, Switch Circuit and Headphone Circuit

16.4. Cassette Deck Circuit, Deck Mechanism Circuit and Tape Eject Circuit

16.5. Power Circuit

16.6. Transformer Circuit and Speaker Terminal Circuit

16.7. CD Loading Circuit

17 Printed Circuit Board

17.1. CD Servo P.C.B. (SIDE A and SIDE B)

17.2. Main P.C.B.

17.3. Panel P.C.B. and Tact Switch P.C.B.

69 71 74 75

76 78 80

17.4. Switch P.C.B., Headphone P.C.B. and Speaker Terminal P.C.B.

17.5. Deck P.C.B. and Tape Eject P.C.B.

17.6. Deck Mechanism P.C.B. and CD Loading P.C.B.

81 82 83

17.7. Power P.C.B.

17.8. Transformer P.C.B.

18 Wiring Connection Diagram 19 Illustration of IC 痴, Transistors and Diodes 20 Terminal Function of ICｴs

20.1. IC701 (AN22004A-NF) IC HEAD AMP

20.2. IC702 (MN6627934CH) IC LSI

20.3. IC703 (BA5948FPE2) IC 4CH DRIVE

20.4. IC302 (C2CBJF000016) MICRO PROCESSOR

21 Troubleshooting Flowchart (CD Section Circuit) 22 Parts Location and Replacement Parts List

22.1. Deck Mechanism

22.2. CD Loading Mechanism

22.3. Cabinet

22.4. Electrical Part List

22.5. Packaging Materials & Accessories Parts List

22.6. Packaging

84 85

86 88 89

89 89 90 90

92 94

97 102 105 113 113

SA-PM19E / SA-PM19EB / SA-PM19EG

1 Caution for AC Mains Lead

SA-PM19E / SA-PM19EB / SA-PM19EG

2 Before Repair and Adjustment

Disconnect AC power, discharge Power Supply Capacitors C506, C507, C508, C584 & C311 through a 10Ω, 5W resistor to ground. DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices. After repairs are completed, restore power gradually using a variac, to avoid overcurrent.

· Current consumption at AC 230V, 50 Hz in NO SIGNAL mode should be ~300 mA. (For E, EG)

· Current consumption at AC 230V - 240V, 50 Hz in NO SIGNAL mode should be ~300 mA. (For EB)

3 Protection Circuitry

The protection circuitry may have operated if either of the following conditions are noticed:

· No sound is heard when the power is turned on.

· Sound stops during a performance.

The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are "shorted", or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.

If this occurs, follow the procedure outlines below:

1. Turn off the power.

2. Determine the cause of the problem and correct it.

3. Turn on the power once again after one minute. Note: When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.

SA-PM19E / SA-PM19EB / SA-PM19EG

4 Handling the Lead-free Solder

4.1. About lead free solder (PbF)

Distinction of PbF P.C.B.:

P.C.B.s (manufactured) using lead free solder will have a PbF stamp on the P.C.B.

Caution:

· Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Please

use a high temperature soldering iron. In case of soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).

· Pb free solder will tend to splash when heated too high (about 1100°F/600°C).

· When soldering or unsoldering, please completely remove all of the solder on the pins or solder area, and be sure to heat the

soldering points with the Pb free solder until it melts enough.

SA-PM19E / SA-PM19EB / SA-PM19EG

5 Precaution of Laser Diode

Caution :

This product utilizes a laser diode with the unit turned "ON", invisible laser radiation is emitted from the pick up lens. Wavelength : 780 nm Maximum output radiation power from pick up : 100 µW/VDE Laser radiation from pick up unit is safety level, but be sure the followings:

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

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

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

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

ACHTUNG :

Dieses Produkt enthält eine Laserdiode. Im eingeschalteten Zustand wird unsichtbare Laserstrahlung von der Lasereinheit abgestrahlt. Wellenlänge : 780nm Maximale Strahlungsleistung der Lasereinheit :100µW/VDE Die Strahlung an der Lasereinheit ist ungefährlich, wenn folgende Punkte beachtet werden:

1. Die Lasereinheit nicht zerlegen, da die Strahlung an der freigelegten Laserdiode gefährlich ist.

2. Den werkseitig justierten Einstellregler der Lasereinhit nicht verstellen.

3. Nicht mit optischen Instrumenten in die Fokussierlinse blicken.

4. Nicht über längere Zeit in die Fokussierlinse blicken.

ADVARSEL :

I dette a apparat anvendes laser.

CAUTION!

THIS PRODUCT UTILIZES A LASER. USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

n Use of Caution Labels

SA-PM19E / SA-PM19EB / SA-PM19EG

6 Handling Precautions For Traverse Deck

The laser diode in the traverse deck (optical pickup) 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 pickup).

l Handling of CD traverse deck (optical pickup)

1. Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive to electrical shock.

2. The short land between the No.4 (LD) and No.5 (GND) pins on the flexible board (FFC) is shorted with a solder build-up to prevent damage to the laser diode (Fig 1).

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

4. Do not turn the variable resistor (laser power adjustment). It has already been adjusted.

Fig 1

l Grounding for electrostatic breakdown prevention

1. Human body grounding (Fig 2) Use the anti-static wrist strap to discharge the static

electricity from your body.

2. Work table grounding (Fig 2) Put a conductive material (sheet) or steel sheet on the

area where the traverse deck (optical pickup) is placed, and ground the sheet.

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 pickup).

Fig 2

Caution when Replacing the Optical Pickup :

The traverse has a short point shorted with solder to protect the laser diode against electrostatics breakdown. Be sure to remove the solder from the short point before making connections.

7 Accessories

Note : Refer to Packing Materials & Accessories for part number.

AC mains lead (For

EB only)

ACmains lead

(For E & EG

only)

SA-PM19E / SA-PM19EB / SA-PM19EG

FM indoor

antenna

AM loop antenna

Remote control

transmitter

Antenna plug

adaptor (For EB

only)

SA-PM19E / SA-PM19EB / SA-PM19EG

8 Operation Procedures

SA-PM19E / SA-PM19EB / SA-PM19EG

9 Assembling and Disassembling

9.1. Disassembly flow chart

The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing.

To assemble the unit, reverse the steps shown in the chart below.

SA-PM19E / SA-PM19EB / SA-PM19EG

9.2. Disassembly of Side Panel L & R

Step 1 : Remove all the screws. Step 2 : Remove the screw. Step 3 : Remove the panel L as arrow shown.

Step 1 : Remove the screws. Step 2 : Lift up the Top Cabinet and push backward as arrow

shown, flip Top Cabinet sideway.

Step 4 : Remove all the screws. Step 5 : Remove the screw. Step 6 : Remove the panel R as arrow shown.

9.3. Disassembly of Top Cabinet

· Follow the (Step 1) - (Step 6) of Item 9.2.

Step 3 : Detach the FFC Connector Board CN309.

9.4. Disassembly of Deck P.C.B. & Tape Eject P.C.B.

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

Step 1 : Remove the screw.

Step 2 : Release the clutch. Step 3 : Remove all the screws. Step 4 : Press the lever as arrow shown and remove the Deck

Mechanism.

9.5. Disassembly of Front Panel

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

SA-PM19E / SA-PM19EB / SA-PM19EG

Step 1 : Detach the FFC Board (CN308).

Step 2 : Detach the wire at CN505 Connector.

Step 3 : Release all the Claw. Step 4 : Push the Front Panel as arrow shown.

9.6. Disassembly of Panel P.C.B., Headphone P.C.B. and Switch P.C.B.

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

Step 1 : Remove all the screws.

SA-PM19E / SA-PM19EB / SA-PM19EG

Step 2 : Detach the CN603A Connector.

Step 1 : Detach the wire at CN303 Connector.

9.7. Disassembly of Tact Switch P.C.B.

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 2) of Item 9.6.

Step 2 : Remove all the screws. Step 3 : Release the Claws and remove Rear Panel as arrows

shown.

9.9. Disassembly of Main P.C.B.

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 3) of Item 9.8.

Step 1 : Remove all the screws. Step 2 : Remove the Volume Knob.

9.8. Disassembly of Rear Panel

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

SA-PM19E / SA-PM19EB / SA-PM19EG

Step 1 : Remove the screw and CN504 Connector.

Step 1 : Remove the CN301, CN302 Connector and FFC CN305, CN306 .

Step 2 : Remove the Main P.C.B as arrow shown.

9.10. Disassembly of Transformer P.C.B.

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 3) of Item 9.8.

9.12. Disassembly of Power P.C.B

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 3) of Item 9.8.

· Follow the (Step 1) - (Step 2) of Item 9.9.

· Follow the (Step 1) - (Step 2) of Item 9.10.

· Follow the (Step 1) of Item 9.11.

Step 1 : Remove all the screws. Step 2 : Detach the CN506 Connector.

9.11. Disassembly of Speaker Terminal P.C.B

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 3) of Item 9.8.

· Follow the (Step 1) - (Step 2) of Item 9.9.

· Follow the (Step 1) - (Step 2) of Item 9.10.

Step 1 : Remove all the screws.

9.13. Disassembly of CR16 Mechanism

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 3) of Item 9.8.

· Follow the (Step 1) - (Step 2) of Item 9.9.

· Follow the (Step 1) - (Step 2) of Item 9.10.

SA-PM19E / SA-PM19EB / SA-PM19EG

· Follow the (Step 1) of Item 9.11.

· Follow the (Step 1) of Item 9.12.

Step 1 : Remove the screw.

Step 2 : Remove 2 screws. Lift up the CD Mecha Unit.

9.14. Checking Procedure for Each Major P.C.B.

9.14.1. Replacement of the Power Amplifier IC

· Replacement of the Power Amplifier IC

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 3) of Item 9.8.

· Follow the (Step 1) - (Step 2) of Item 9.9.

· Follow the (Step 1) - (Step 2) of Item 9.10.

· Follow the (Step 1) of Item 9.11.

· Follow the (Step 1) of Item 9.12.

Step 1 : Remove 2 screws fixed to the Power Amp I.C.

SA-PM19E / SA-PM19EB / SA-PM19EG

Step 2 : Unsolder the terminals of Power Amp IC, transistor and replace the component.

9.15. Procedure for Replacing Cassette Holder

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

Step 4 : Press the lever to open the cassette cover. Step 5 : Remove the cassette mechanism unit.

Step 1 : Remove the screw. Step 2 : Release the clutch. Step 3 : Remove all the screws.

Step 6 : Remove the screw and damper gear.

SA-PM19E / SA-PM19EB / SA-PM19EG

Step 7 : Remove the cassette open spring. Step 8 : Pull out the cassette holder to the direction of the

arrow shown.

9.16. Procedure for Replacing Pinch Roller and Head Block (Cassette Mechanism Unit)

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 5) of Item 9.15.

SA-PM19E / SA-PM19EB / SA-PM19EG

9.17. Procedure for Replacing Motor, Capstan Belt A, Capstan Belt B, and Winding Belt (Cassette Mechanism Unit)

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 5) of Item 9.15.

· Follow the (Step 1) - (Step 5) of Item 9.16.

SA-PM19E / SA-PM19EB / SA-PM19EG

9.18. Procedure for Replacing Parts on Mechanism PCB

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 5) of Item 9.15.

· Follow the (Step 1) - (Step 5) of Item 9.16.

9.19. Replacement of CD traverse deck

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 3) of Item 9.8.

· Follow the (Step 1) of Item 9.9.

· Follow the (Step 1) - (Step 2) of Item 9.13.

SA-PM19E / SA-PM19EB / SA-PM19EG

9.20. Replacement of optical pickup unit (CD mechanism)

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

· Follow the (Step 1) - (Step 3) of Item 9.8.

· Follow the (Step 1) of Item 9.9.

· Follow the (Step 1) - (Step 2) of Item 9.13.

· Follow the (Step 1) - (Step 2) of Item 9.19.

SA-PM19E / SA-PM19EB / SA-PM19EG

9.21. Replacement of a traverse gear A and a traverse gear B

· Follow the (Step 1) - (Step 6) of Item 9.2.

· Follow the (Step 1) - (Step 3) of Item 9.3.

· Follow the (Step 1) - (Step 4) of Item 9.5.

SA-PM19E / SA-PM19EB / SA-PM19EG

· Follow the (Step 1) - (Step 3) of Item 9.8.

· Follow the (Step 1) of Item 9.9.

· Follow the (Step 1) - (Step 2) of Item 9.13.

· Follow the (Step 1) - (Step 2) of Item 9.19.

· Follow the (Step 1) - (Step 12) of Item 9.20.

9.22. Procedure for removing CD loading mechanism

1. Turn off by pressing power SW in the body.

2. Unplug AC power cord after the indication of [GOOD-BYE], then disassemble the body.

3. Disassemble the body, and take out CD loading mechanism.

4. Perform disassembly according to the following procedure for disassembly.

9.23. CR16 mechanism disassembly procedure

9.23.1. Gear for servicing information

· This unit has a gear which used for checking items

(open/close of disc tray, up/down operation of traverse unit by manually) when servicing. (For gear information, that is described on the items for disassembly procedures.)

· For preparation of gear (for servicing), perform the

procedures as follows.

· In case of re-servicing the same set, the “ gear for servicing” may be took off because it had been used. So, the “gear for servicing” must be stored.

1. Remove the gear attached to top cover of CD loading mechanism.