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

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ORDER NO. MD0403117C2

CD Stereo System

SA-PM19E

SA-PM19EB

SA-PM19EG

Colour

(S)... Silver Type

(K)... Black Type (For E only)

Specification

n Amplifier Section		Track system	4 track, 2 channel
RMS Power output		Heads
10% Total harmonic distortion		Record/playback	Solid permalloy head
1 kHz, both channels driven		Erasure	Double gap ferrite head
(Low channel)	35 W per channel (6 Ω)	Motor	DC servo motor
8 kHz, both channels driven		Recording system	AC bias 100 kHz
(High channel)	35 W per channel (6 Ω)	Erasing system	AC erase 100 kHz
Total Bi-Amp power	70 W per channel	Tape speed	4.8 cm/s
Output Impedance		Overall frequency response (+3 dB, -6 dB at Deck Out)
Headphone	16Ω - 32 Ω	Normal (Type I)	35 Hz - 14 kHz
		S/N RATIO	45 dB (A weighted)
n FM Tuner Section		Wow and flutter	0.10% (WRMS)
Frequency range	87.50 - 108.00 MHz (50 kHz	Fast forward and rewind times	Approx. 120 seconds with C-60
	steps)		cassette tape
Sensitivity	1.5 µV (IHF)
S/N 26 dB	1.5 µV	n CD Section
Antenna terminal(s)	75 Ω (unbalanced)	Disc
		CD, CD-R, CD-RW, MP3	8 cm/12 cm
n AM Tuner Section		Sampling frequency	44.1 kHz
Frequency range	522 kHz - 1629 kHz (9 kHz	Decoding	16 bit linear
	steps)	Pickup
		Pickup
	520 kHz - 1630 kHz (10 kHz	Beam source/ Wavelength	Semiconductor laser / 780 nm
	steps)	Beam source/ Wavelength	Semiconductor laser / 780 nm
	steps)	Number of channels	Stereo
Sensitivity		Number of channels	Stereo
Sensitivity		Frequency response	20 Hz - 20 kHz (+1dB, -2dB)
S/N 20 dB (at 999 kHz)	560 µV/m	Frequency response	20 Hz - 20 kHz (+1dB, -2dB)
S/N 20 dB (at 999 kHz)	560 µV/m	Wow and flutter	Below measurable limit
		Wow and flutter	Below measurable limit
		Digital filter	8 fs

n Cassette Deck Section

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	Music Center: SA-PM19EB-S
	Speaker: SB-PM19E-M
n System: SC-PM19EG-S	Music Center: SA-PM19EG-S
	Speaker: SB-PM19EG-M
n System: SC-PM19E-K	Music Center: SA-PM19E-S
	Speaker: SB-PM19P-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.

CONTENTS

	Page
1	Caution for AC Mains Lead	4
2	Before Repair and Adjustment	5
3	Protection Circuitry	5
4	Handling the Lead-free Solder	6
	4.1. About lead free solder (PbF)	6
5	Precaution of Laser Diode	7
6	Handling Precautions For Traverse Deck	8
7	Accessories	9
8	Operation Procedures	10
9	Assembling and Disassembling	11
	9.1. Disassembly flow chart	11
	9.2. Disassembly of Side Panel L & R	12
	9.3. Disassembly of Top Cabinet	12
	9.4. Disassembly of Deck P.C.B. & Tape Eject P.C.B.	12
	9.5. Disassembly of Front Panel	13
	9.6. Disassembly of Panel P.C.B., Headphone P.C.B. and
	Switch P.C.B.	13
	9.7. Disassembly of Tact Switch P.C.B.	14
	9.8. Disassembly of Rear Panel	14
	9.9. Disassembly of Main P.C.B.	14
	9.10. Disassembly of Transformer P.C.B.	15
	9.11. Disassembly of Speaker Terminal P.C.B	15
	9.12. Disassembly of Power P.C.B	15
	9.13. Disassembly of CR16 Mechanism	15
	9.14. Checking Procedure for Each Major P.C.B.	17
	9.15. Procedure for Replacing Cassette Holder	17
	9.16. Procedure for Replacing Pinch Roller and Head Block
	(Cassette Mechanism Unit)	18
	9.17. Procedure for Replacing Motor, Capstan Belt A, Capstan
	Belt B, and Winding Belt (Cassette Mechanism Unit)	19

	Page
9.18. Procedure for Replacing Parts on Mechanism PCB	20
9.19. Replacement of CD traverse deck	21
9.20. Replacement of optical pickup unit (CD mechanism)	22
9.21. Replacement of a traverse gear A and a traverse gear B
	23
9.22. Procedure for removing CD loading mechanism	24
9.23. CR16 mechanism disassembly procedure	24
9.24. CR16 MECHANISM ASSEMBLY PROCEDURE	31
9.25. Disassembly of traverse mechanism	43
9.26. Handling of cassette tape jam	44
10 Service Positions	45
10.1. Checking procedure	45
10.2. Checking the major P.C.B.	45
11 Self-Diagnostic Display Function	46
11.1. Preparations	46
11.2. Setting of the Self-Diagnostic Mode	46
11.3. Restoring Normal Display	46
11.4. Clearing Self-Diagnostic Memory	46
11.5. Displaying Self-Diagnostic Results	46
12 Procedure for Checking Operation of Individual Parts of
Cassette Mechanism Unit	49
12.1. Operation Check with Cassette Tape	49
12.2. Operation Check without Cassette Tape	49
13 Measurement And Adjustments	51
13.1. Tuner/CD Sections	51
13.2. Cassette Deck Section	51
14 Block Diagram	53
14.1. CD Servo Block	53
14.2. Main Block	55
15 Notes of Schematic Diagram	60

SA-PM19E / SA-PM19EB / SA-PM19EG

16 Schematic Diagram	61		17.7. Power P.C.B.	84
16.1. CD Servo Circuit	61		17.8. Transformer P.C.B.	85
16.2. Main Circuit	63	18	Wiring Connection Diagram	86
16.3. Panel Circuit, Tact Switch Circuit, Switch Circuit and		19	Illustration of IC , Transistors and Diodes	88
Headphone Circuit	67	20	Terminal Function of IC s	89
16.4. Cassette Deck Circuit, Deck Mechanism Circuit and Tape			20.1. IC701 (AN22004A-NF) IC HEAD AMP	89
Eject Circuit	69		20.2. IC702 (MN6627934CH) IC LSI	89
16.5. Power Circuit	71		20.3. IC703 (BA5948FPE2) IC 4CH DRIVE	90
16.6. Transformer Circuit and Speaker Terminal Circuit	74		20.4. IC302 (C2CBJF000016) MICRO PROCESSOR	90
16.7. CD Loading Circuit	75	21	Troubleshooting Flowchart (CD Section Circuit)	92
17 Printed Circuit Board	76	22	Parts Location and Replacement Parts List	94
17.1. CD Servo P.C.B. (SIDE A and SIDE B)	76		22.1. Deck Mechanism	95
17.2. Main P.C.B.	78		22.2. CD Loading Mechanism	97
17.3. Panel P.C.B. and Tact Switch P.C.B.	80		22.3. Cabinet	102
17.4. Switch P.C.B., Headphone P.C.B. and Speaker Terminal			22.4. Electrical Part List	105
P.C.B.	81		22.5. Packaging Materials & Accessories Parts List	113
17.5. Deck P.C.B. and Tape Eject P.C.B.	82		22.6. Packaging	113
17.6. Deck Mechanism P.C.B. and CD Loading P.C.B.	83

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 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.

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).

SA-PM19E / SA-PM19EB / SA-PM19EG

7 Accessories

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

AC mains lead (For

EB only)

ACmains lead (For E & EG only)

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 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 1 : Remove the screws.

Step 2 : Lift up the Top Cabinet and push backward as arrow shown, flip Top Cabinet sideway.

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.

Step 1 : Detach the FFC Board (CN308).

Step 2 : Detach the wire at CN505 Connector.

SA-PM19E / SA-PM19EB / SA-PM19EG

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 1 : Detach the wire at CN303 Connector.

Step 2 : Detach the CN603A 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.

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.

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.

SA-PM19E / SA-PM19EB / SA-PM19EG

Step 1 : Remove the screw and CN504 Connector.

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.

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.

SA-PM19E / SA-PM19EB / SA-PM19EG

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.

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.

SA-PM19E / SA-PM19EB / SA-PM19EG

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

procedures as follows.

·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

·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.