Panasonic SA-PM41EB, SA-PM41EG Service Manual

CD Stereo System

SA-PM41E SA-PM41EB SA-PM41EG

Colour

(S)... Silver Type

ORDER NO. MD0503061C2

Specification

n Amplifier Section

RMS Output power both channel driven

10%, Total harmonic distortion

1 kHz

(Low channel) 41 W per channel (6 Ω )

8 kHz

(High channel) 39 W per channel (6 Ω )

Total Bi-Amp power 80 W per channel

Input Impedance 250 mV

Output Impedance

Headphone 16 Ω -32Ω

n FM Tuner Section

Frequency range 87.5 MHz - 108.0 MHz

(50 kHz steps)

Sensitivity 1.02 µV (IHF)

S/N 26dB 1.00 µV

ntenna terminal(s) 75 Ω (unbalanced)

Preset Station 15

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) 900 µV/m

Preset Station 15

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 35 Hz - 14 kHz

S/N RATIO 42.64 dB (A weighted)

Wow and flutter 0.08% (WRMS)

Fast forward and rewind time Approx. 120 seconds with C-60

cassette tape

n CD Section

Disc

CD, CD-R, CD-RW, MP3 8cm / 12cm

Sampling frequency

CD 44.1 kHz

MP3 32 kHz, 44.1 kHz, 48 kHz

Bit rate 32kbps - 320kbps

Decoding 16/20/24 bit linear

Pick up

Beam source/wavelength Semiconductor laser/780 nm

Number of channels Stereo

Frequency response 20 Hz - 20 kHz (+1dB, -2dB)

SA-PM41E / SA-PM41EB / SA-PM41EG

Wow and flutter Below measurable limit

Digital filter 8fs

D/A converter MASH (1 bit DAC)

n General

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

AC 230 - 240 V, 50 Hz (For EB)

Power consumption 130 W

Dimensions (W x H x D) 175 mm x 254 mm x 391 mm

Mass 5.8 kg

Power consumption in standby mode

0.6 W

Notes :

1. Specifications are subject to change without notices. 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.

n System : SC-PM41E-S

n System : SC-PM41EB-S

n System : SC-PM41EG-S

Music center: SA-PM41E-S

Speaker: SB-PM41E-M

Music center: SA-PM41EB-S

Speaker: SB-PM41E-M

Music center: SA-PM41EG-S

Speaker: SB-PM41E-M

CONTENTS

Page Page

1 Safety Precautions

1.1. GENERAL GUIDELINES

2 Caution for AC Mains Lead

3 Before Repair and Adjustment

4 Protection Circuitry

5 Handling the Lead-free Solder

5.1. About lead free solder (PbF)

6 Precaution of Laser Diode

7 Handling Precautions For Traverse Deck

8 Accessories

9 Operation Procedures

10 Information on Disc & MP3

11 Assembling and Disassembling

11.1. Disassembly flow chart

11.2. Disassembly of Side Panel L & R

11.3. Disassembly of Top Cabinet

11.4. Disassembly of Deck P.C.B. and Tape Eject P.C.B.

11.5. Disassembly of Front Panel

11.6. Disassembly of Main Control P.C.B., Function P.C.B. and

Power In P.C.B.

11.7. Disassembly of Panel P.C.B.

11.8. Disassembly of Rear Cabinet

11.9. Disassembly of Main P.C.B.

11.10. Disassembly of Transforme r P.C.B.

11.11. Disassembly of Tuner Pack

11.12. Disassembly of Power P.C.B.

11.13. Disassembly of CR16 Mechanism

11.14. Replacement of CD Lid

11.15. Replacement of Cassette Lid

11.16. Replacement of the Power IC and Transistors

11.17. Procedure for Replacing Pinch Roller and Head Block

(Deck Mechanism Unit)

11.18. Procedure for Replacing Motor, Capstan Belt A, Capstan

Belt B, and Winding Belt (Deck Mechanism Unit)

11.19. Procedure for Replacing Parts on Deck Mechanism PCB

11.20. Disassembly of CR16 Mechanism

11.21. Replacement of optical pickup unit (CD mechanism)

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

11.23. Procedure for removing CD loading mechanism

11.24. CR16 mechanism disassembly procedure

11.25. CR16 MECHANISM ASSEMBLY PROCEDURE

11.26. Disassembly of traverse mechanism

11.27. Handling of cassette tape jam

12 Service Positions

12.1. Checking procedure

12.2. Checking the major P.C.B

13 Self-Diagnostic Display Function

13.1. Entering into Self-Diagnostic Mode

13.2. Clearing Self-Diagnostic Memory

13.3. Displaying Self-Diagnostic Results

13.4. Error Code Table

13.5. Deck Mechanism Self-Diagnostic Mode

13.6. Changer Reliability Test Mode

13.7. Changer Operation Checking

13.8. CR16 Mechanism Ageing Mode

14 Procedure for Checking Operation of Individual Parts of Deck

Mechanism Unit

14.1. Operation Check with Cassette Tape

14.2. Operation Check without Cassette Tape

15 Measurement And Adjustments

15.1. Cassette Deck Section

16 Voltage Measurement

SA-PM41E / SA-PM41EB / SA-PM41EG

16.1. CD SERVO P.C.B. 61

16.2. MAIN P.C.B.

16.3. MAIN CONTROL P.C.B.

16.4. PANEL P.C.B.

16.5. DECK P.C.B.

16.6. DECK MECHANISM P.C.B.

16.7. CD LOADING P.C.B.

16.8. POWER P.C.B.

16.9. TRANSFORMER P.C.B.

17 Waveform Chart

18 Block Diagram

18.1. CD SERVO Block

18.2. MAIN Block

19 Notes of Schematic Diagram

20 Schematic Diagram

20.1. CD SERVO CIRCUIT

20.2. MAIN CIRCUIT

20.3. MAIN CONTROL CIRCUIT

20.4. PANEL CIRCUIT, POWER IN CIRCUIT and FUNCTION

CIRCUIT

20.5. DECK CIRCUIT, DECK MECHANISM CIRCUIT and TAPE

EJECT CIRCUIT

20.6. POWER CIRCUIT

20.7. TRANSFORMER CIRCUIT

20.8. CD LOADING CIRCUIT

21 Printed Circuit Board

21.1. CD SERVO P.C.B

21.2. MAIN P.C.B

21.3. MAIN CONTROL P.C.B and PANEL P.C.B

21.4. POWER IN P.C.B, FUNCTION P.C.B and DECK

MECHANISM P.C.B

21.5. DECK P.C.B and TAPE EJECT P.C.B

21.6. POWER P.C.B

21.7. TRANSFORMER P.C.B

21.8. CD LOADING P.C.B

22 Wiring Connection Diagram 23 Illustration of IC 痴, Transistors and Diodes 24 Terminal Function of ICｴs

24.1. IC302 (C2CBJG000575) MICROPROCESSOR

24.2. IC702 (MN6627953HB) Servo processor/ Digital signal

processor/ Digital filter/ D/A converter

24.3. IC703 (BA5948FPE2) IC 4CH DRIVE

25 Troubleshooting Flowchart (CD Section Circuit)

26 Parts Location and Replacement Parts List

26.1. Deck Mechanism

26.2. CD LOading Mechanisms

26.3. Cabinet Part List

26.4. Electrical Part List

26.5. Packaging Materials & Accessories Parts List

26.6. Packaging

100

102

103

104

106

108

109

111

116

120

129

SA-PM41E / SA-PM41EB / SA-PM41EG

1 Safety Precautions

1.1. GENERAL GUIDELINES

1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.

2. After servicing, ensure that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

3. After servicing, check for leakage current checks to prevent from being expose d to shock hazards.

1.1.1. LEAKAGE CURRENT COLD CHECK

1. Unplug the AC cord and connec t a jumper between the two prongs on the plug.

2. Using an ohmmeter measure the resistance value, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be between 1MΩand 5.2Ω. When the exposed metal does not have a return path to the chassis, the reading must be

Fig. 1

1.1.2. LEAKAGE CURRENT HOT CHECK (See Figure 1.)

1. Plug the AC cord directly into the AC outlet. Do not use an isolation transfo rmer for this check.

2. Connect a 1.5kΩ, 10 watts resistor, in parallel with a 0.15µF capacitors, between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure 1.

3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.

4. Check each expose d metallic part, and measure the voltage at each point.

5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.

6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. should the measurement is outside of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and re-checked before it is returned to the customer.

2 Caution for AC Mains Lead

SA-PM41E / SA-PM41EB / SA-PM41EG

3 Before Repair and Adjustment

Disconnect AC power, discharge Power Supply Capacitors C506, C507 & C508 through a 10Ω, 1W 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 (E/EG).

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

4 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 speake r 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.

5 Handling the Lead-free Solder

5.1. 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).

· W hen 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-PM41E / SA-PM41EB / SA-PM41EG

6 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-PM41E / SA-PM41EB / SA-PM41EG

7 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).

· Handling of 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. To prevent the breakdown of the laser diode, an antistatic shorting pin is inserted into the flexible board (FFC board).

3. Take care not to apply excessive stress to the flexible board (FFC board). When removing or connecting the short pin, finish

the job in as short time as possible. (Fig 7.1)

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

· Grounding for electrostatic breakdown prevention

1. Work table grounding. (Fig 7.2)

Use the anti-static wrist strap to discharge the static electricity from your body.

2. Work table grounding. (Fig 7.2)

Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pickup) is place, 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).

Caution when replacing the Traverse Deck

The traverse deck 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 7.1)

(Figs 7.2)

8 Accessories

Note : Refer to Packing Materials & Accessories Parts List (Section 26.5) for the part number.

Remote Control

AC cord (For E/EG

only)

SA-PM41E / SA-PM41EB / SA-PM41EG

AC power cord (For

EB only)

FM indoor antenna

AM loop antenna

Antenna

plug adaptor (For EB

only)

SA-PM41E / SA-PM41EB / SA-PM41EG

9 Operation Procedures

10 Information on Disc & MP3

SA-PM41E / SA-PM41EB / SA-PM41EG

11 Assembling and Disassembling

“ATTENTION SERVICER”

Some chassis components may be have sharp edges. Be careful when disassembling and servicing.

1. This section describes procedures for checking the operation of the major printed circuit boards and replacing the main components.

2. For reassembly after operation checks or replacement, reverse the respective procedures. Special reassembly procedures are described only when required.

3. Select items from the following index when checks or replacement are required.

· Disassembly of Side Panel L & R

· Disassembly of Top Cabinet

· Disassembly of Deck P.C.B. and Tape Eject P.C.B.

· Disassembly of Front Panel

· Disassembly of Main Control P.C.B., Function P.C.B. and Power In P.C.B.

· Disassembly of Panel P.C.B.

· Disassembly of Rear Cabinet

· Disassembly of Main P.C.B.

· Disassembly of Transformer P.C.B.

· Disassembly of Power P.C.B.

· Disassembly of CR16 Mechanism

Warning:

This product uses a laser diode. Refer to “Preca ution of Laser Diode”.

ACHTUNG:

Die Lasereinheit nicht zerlegen.

Die Lasereinheit darf nur gegen eine vom Hertsteller spezifizierte Einheit ausgetauscht werden.

SA-PM41E / SA-PM41EB / SA-PM41EG

11.1. 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-PM41E / SA-PM41EB / SA-PM41EG

11.2. Disassembly of Side Panel L &

Step 1 : Remove 5 screws from the side panel (R).

Step 2 : Remove 1 screws from the corner of the side panel (R).

Step 3 : Remove the side panel as arrow shown (Be careful of the catches).

Step 1 : Remove 1 screws.

Step 2 : Lift up the top cabine t as arrow shown (Be careful of the catches).

Step 4 : Remove 5 screws from the side panel (L).

Step 5 : Remove 1 screws from the corner of the side panel (L).

Step 6 : Remove the side panel as arrow shown (Be careful of the catches).

11.3. Disassembly of Top Cabinet

· Follow the (Step 1) - (Step 6) of item 11.2.

Step 3 : Place the top cabinet as shown and detach the connector CN1305.

11.4. Disassembly of Deck P.C.B. and Tape Eject P.C.B.

· Follow the (Step 1) - (Step 6) of item 11.2.

· Follow the (Step 1) - (Step 3) of item 11.3.

SA-PM41E / SA-PM41EB / SA-PM41EG

Step 1 : Remove 1 screw.

Step 2 : Release the clutch and remove the Tape Eject P.C.B..

Step 3 : Remove 4 screws.

Step 4 : Push the lever as arrow shown to remove the Deck Mechanism.

Step 1 : Detach the connector CN308.

Step 2 : Detach the connector CN505.

11.5. Disassembly of Front Panel

· Follow the (Step 1) - (Step 6) of item 11.2.

· Follow the (Step 1) - (Step 3) of item 11.3.

SA-PM41E / SA-PM41EB / SA-PM41EG

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

Step 3 : Releas e 2 catches.

Step 4 : Release the catch at the bottom cabine t and remove the front panel as arrow shown.

11.6. Disassembly of Main Control P.C.B., Function P.C.B. and Power In P.C.B.

· Follow the (Step 1) - (Step 6) of item 11.2.

· Follow the (Step 1) - (Step 3) of item 11.3.

· Follow the (Step 1) - (Step 4) of item 11.5.

· Disasembly of Main Control P.C.B.

Step 3 : Detach the connector CN603A.

· Disasembly of Function P.C.B. and Power In P.C.B.

Step 1 : Remove 4 screws to remove the shield plate.

SA-PM41E / SA-PM41EB / SA-PM41EG

Step 4 : Remove 4 screws.

Step 5 : Release the 2 clutches and remove Function P.C.B. and Power In P.C.B. together with Main Control P.C.B..

11.7. Disassembly of Panel P.C.B.

· Follow the (Step 1) - (Step 6) of item 11.2.

· Follow the (Step 1) - (Step 3) of item 11.3.

· Follow the (Step 1) - (Step 4) of item 11.5.

· Follow the (Step 1) - (Step 5) of item 11.6.

Step 2 : Remove 7 screws.

Step 3 : Release 3 clutches and remove the Panel P.C.B. as arrow shown.

11.8. Disassembly of Rear Cabinet

· Follow the (Step 1) - (Step 6) of item 11.2.

· Follow the (Step 1) - (Step 3) of item 11.3.

Step 1 : Remove the volume knob.

Step 1 : Detach the connector CN303.

SA-PM41E / SA-PM41EB / SA-PM41EG

Step 2 : Remove 9 screws altogether.

Step 3 : Remove the rear cabinet as arrows shown (Be careful of the catches).

11.9. Disassembly of Main P.C.B.

· Follow the (Step 1) - (Step 6) of item 11.2.

· Follow the (Step 1) - (Step 3) of item 11.3.

· Follow the (Step 1) - (Step 3) of item 11.8.

Step 2 : Release the catch as arrow shown and detach the connector CN304.

Step 3 : Detach the connectors CN301 and CN302 and pull out the Main P.C.B. as arrow shown.

11.10. Disassembly of Transformer P.C.B.

Step 1 : Detach the connector CN308, CN305 and CN306.

· Follow the (Step 1) - (Step 6) of item 11.2.

· Follow the (Step 1) - (Step 3) of item 11.3.

· Follow the (Step 1) - (Step 3) of item 11.8.

Step 1 : Detach the connectors CN505 and CN506.

Step 2 : Remove 4 screws and pull out the Transformer P.C.B. as arrow shown.

SA-PM41E / SA-PM41EB / SA-PM41EG

11.11. Disassembly of Tuner Pack

· Follow the (Step 1) - (Step 6) of item 11.2.

· Follow the (Step 1) - (Step 3) of item 11.3.

· Follow the (Step 1) - (Step 3) of item 11.8.

Step 1 : Detach the connector CN101 and remove the tuner pack as arrow shown.

Step 1 : Remove 4 screws.

Step 2 : Remove the Power P.C.B. as arrow shown (Be careful of the catch)

11.13. Disassembly of CR16 Mechanism

· Follow the (Step 1) - (Step 6) of item 11.2.

· Follow the (Step 1) - (Step 3) of item 11.3.

· Follow the (Step 1) - (Step 4) of item 11.5.

11.12. Disassembly of Power P.C.B.

· Follow the (Step 1) - (Step 6) of item 11.2.

· Follow the (Step 1) - (Step 3) of item 11.3.

· Follow the (Step 1) - (Step 4) of item 11.5.

· Follow the (Step 1) - (Step 3) of item 11.8.

· Follow the (Step 1) - (Step 3) of item 11.9.

· Follow the (Step 1) - (Step 2) of item 11.10.

Step 1 : Remove 2 screws.

SA-PM41E / SA-PM41EB / SA-PM41EG

Step 2 : Detach the connectors CN305 and CN306.

Step 3 : Remove the tape which used to secure the FFC connectors.

Step 5 : Remove 2 screws and remove the CD Mechanism Unit from the bottom chassis as arrow shown.

11.14. Replacement of CD Lid

· Follow the (Step 1) - (Step 6) of item 11.2.

· Follow the (Step 1) - (Step 3) of item 11.3.

· Follow the (Step 1) - (Step 4) of item 11.5.

Step 4 : Release the catches and remove the middle unit as arrow shown.

Step 1 : Remove 2 screws 2 CD Lid supports and earth plate.

SA-PM41E / SA-PM41EB / SA-PM41EG

Step 2 : Push the spring as arrow shown.

Step 3 : Remove the CD lid as arrow shown.

11.15. Replacement of Cassette Lid

· Follow the (Step 1) - (Step 6) of item 11.2.

· Follow the (Step 1) - (Step 3) of item 11.3.

· Follow the (Step 1) - (Step 4) of item 11.4.

Step 1 : Remove 1 screw and the damper gear.

Step 2 : Remove the cassette open spring as arrows shown in order.

SA-PM41E / SA-PM41EB / SA-PM41EG

· Follow the (Step 1) - (Step 3) of item 11.3.

· Follow the (Step 1) - (Step 4) of item 11.5.

· Follow the (Step 1) - (Step 3) of item 11.8.

· Follow the (Step 1) - (Step 3) of item 11.9.

· Follow the (Step 1) - (Step 2) of item 11.10.

· Follow the (Step 1) - (Step 2) of item 11.12.

Step 3 : Pull both sides cassette holders to the direction of the arrows shown.

Step 4 : Remove the cassette lid as arrow shown.

11.16. Replacement of the Power IC and Transistors

Step 1 : Remove 2 screws.

Step 2 : Remove 2 screws.

Step 3 : Unsold er the Power IC500.

Step 4 : Unsold er the Transistor Q501 and Q502.

· Follow the (Step 1) - (Step 6) of item 11.2.

11.17. Procedure for Replacing Pinch Roller and Head Block (Deck Mechanism Unit)

· Follow the (Step 1) - (Step 6) of Item 11.2.

· Follow the (Step 1) - (Step 3) of Item 11.3.

· Follow the (Step 1) - (Step 4) of Item 11.4.

SA-PM41E / SA-PM41EB / SA-PM41EG

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

· Follow the (Step 1) - (Step 6) of Item 13.2.

· Follow the (Step 1) - (Step 4) of Item 13.3.

· Follow the (Step 1) - (Step 4) of Item 13.4.

· Follow the (Step 1) - (Step 4) of Item 13.20.

SA-PM41E / SA-PM41EB / SA-PM41EG

11.19. Procedure for Replacing Parts on Deck Mechanism PCB

SA-PM41E / SA-PM41EB / SA-PM41EG

· Follow the (Step 1) - (Step 6) of Item 11.2.

· Follow the (Step 1) - (Step 3) of Item 11.3.

· Follow the (Step 1) - (Step 4) of Item 11.4.

· Follow the (Step 1) - (Step 5) of Item 11.17.

11.20. Disassembly of CR16 Mechanism

· Follow the (Step 1) - (Step 6) of Item 11.2.

· Follow the (Step 1) - (Step 3) of Item 11.3.

· Follow the (Step 1) - (Step 4) of Item 11.5.

· Follow the (Step 1) - (Step 3) of Item 11.8.

· Follow the (Step 1) - (Step 5) of Item 11.13.

SA-PM41E / SA-PM41EB / SA-PM41EG

11.21. Replacement of optical pickup unit (CD mechanism)

· Follow the (Step 1) - (Step 6) of Item 11.2.

· Follow the (Step 1) - (Step 3) of Item 11.3.

· Follow the (Step 1) - (Step 4) of Item 11.5.

· Follow the (Step 1) - (Step 3) of Item 11.8.

· Follow the (Step 1) - (Step 5) of Item 11.13.

· Follow the (Step 1) - (Step 2) of Item 11.20.

SA-PM41E / SA-PM41EB / SA-PM41EG

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

· Follow the (Step 1) - (Step 6) of Item 11.2.

· Follow the (Step 1) - (Step 3) of Item 11.3.

· Follow the (Step 1) - (Step 4) of Item 11.5.

· Follow the (Step 1) - (Step 3) of Item 11.8.

· Follow the (Step 1) - (Step 5) of Item 11.13.

· Follow the (Step 1) - (Step 2) of Item 11.20.

· Follow the (Step 1) - (Step 12) of Item 11.21.

SA-PM41E / SA-PM41EB / SA-PM41EG

11.23. 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.

11.24. CR16 mechanism disassembly procedure

11.24.1. 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 becaus e it had been used. So, the “gear for servicing” must be stored.

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

2. Insert the hexagonal wrench (2.5mm) into the gear.

SA-PM41E / SA-PM41EB / SA-PM41EG

11.24.2. Replacement for the disc tray

· Follow the (Step 1) - (Step 6) of Item 11.2.

· Follow the (Step 1) - (Step 3) of Item 11.3.

· Follow the (Step 1) - (Step 4) of Item 11.5.

· Follow the (Step 1) - (Step 3) of Item 11.8.

· Follow the (Step 1) - (Step 5) of Item 11.13.

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