Panasonic SAPM-321-P Service manual

CD Stereo System

SA-PM321P

Colour

(S)... Silver Type

ORDER NO. MD0607236CE

Specification

n Amplifier Section

FTC OUTPUT POWER both channel driven simultaneously

10% total harmonic distortion (THD)

60 Hz to 20 kHz 4.3 W per channel (6 Ω)

RMS OUTPUT POWER both channel driven simultaneously

10% total harmonic distortion (THD)

Output impedance

HEADPHONE 16 to 32 Ω

MUSIC PORT 12 kΩ

Phone jack

Terminal Stereo, 3.5 mm

Music Port jack

Terminal Stereo, 3.5 mm

XM Ready XM Mini-Tuner and Home Dock

n FM Tuner Section

Frequency range 87.90 to 107.90 MHz

Sensitivity 1.50 µV (IHF)

S/N 26 dB 1.20 µV

ntenna terminals 75 Ω (unbalanced)

Preset station FM 15 stations

5 W per channel (6 Ω)

(200 kHz steps)

87.50 to 108.00 MHz (100 kHz steps)

AM 15 stations

n AM Tuner Section

Frequency range 520 to 1710 kHz

(10 kHz steps)

Sensitivity

S/N 20 dB (at 1000 kHz) 447 µV/m

n CD Section

Disc played [8 cm or 12 cm]

(1) CD-Audio (CD-DA)

(2) CD-R/RW (CD-DA, MP3 formatted disc)

(3) MP3

Sampling frequency

CD 44.1 kHz

MP3 32 kHz, 44.1 kHz, 48 kHz

Bit rate

MP3 32 kbps to 384 kbps

Decoding 16/20/24 bit linear

Pickup

Beam source Semiconductor laser

Wavelength 785 nm

Laser power CLASS 1

udio output (Disc)

Number of channels 2 channel

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

Wow and flutter Below measurable limit

SA-PM321P

Digital filter 8fs

D/A converter MASH (1 bit DAC)

n General

Power supply AC 120 V, 60 Hz

Power consumption 30 W

Dimensions (W x H x D) 165 x 227 x 327 mm

(6-1/2” x 8-15/16” x 12-7/8”)

Mass 2.7 kg (6lb.)

Operating temperature range +5 to +35°C (+41°F to +95°F)

Operation humidity range 5 to 90% RH (no condensation)

Power consumption in standby mode

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.

n System : SC-PM321P-S

Music center: SA-PM321P-S

Speaker: SB-PM3P-M

CONTENTS

Page Page

1 Safety Precautions

1.1. General Guidelines

1.2. Before Repair and Adjustment

1.3. Protection Circuitry

1.4. Caution For Fuse Replacement

2 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices

3 Precaution of Laser Diode

4 Handling Precautions For Traverse Deck

5 Service caution based on legal restrictions

5.1. General description about Lead Free Solder (PbF)

6 Accessories

7 Operating Instructions Procedures

7.1. Main Unit & Remote Control Operation

7.2. Disc Information

8 Self diagnosis and special mode setting

8.1. Special Mode Table

8.2. Error Code Table

9 Assembling and Disassembling

9.1. Caution

9.2. Disassembly flow chart

9.3. Main Parts Location Diagram

9.4. Disassembly of Side Panel L & R

9.5. Disassembly of Top Cabinet Unit

9.6. Disassembly of Headphone P.C.B

9.7. Disassembly of Front Panel

9.8. Disassembly of Panel P.C.B

9.9. Disassembly of Rear Panel

9.10. Disassembly of XM Ready P.C.B

9.11. Disassembly of Tuner Pack

9.12. Disassembly of Main P.C.B

9.13. Disassembly of Power P.C.B

9.14. Disassembly of Speaker Terminal P.C.B

9.15. Disassembly of Transformer P.C.B

9.16. Disassembly of CD Mechanism

9.17. Disassembly of Traverse Unit, Driving Gear, and Cam

Gear (CD Mechanism Unit)

9.18. Disassembly of Optical Pickup (CD Mechanism Unit)

9.19. Disassembly of Traverse Gear A and Traverse Gear B

(CD Mechanism Unit)

10 Service Fixture and Tools

11 Service Positions

11.1. Checking and Repairing of Headphone P.C.B

11.2. Checking and Repairing of Panel P.C.B

11.3. Checking and Repairing of Transformer P.C.B

11.4. Checking and Repairing of Main P.C.B

11.5. Checking and Repairing of CD Mechanism P.C.B

11.6. Checking and Repairing of Speaker Terminal P.C.B

11.7. Checking and Repairing of Power P.C.B

11.8. Checking and Repairing of XM Ready P.C.B (Side A)

11.9. Checking and Repairing of XM Ready P.C.B (Side B)

12 Voltage Measurement and Waveform Chart

12.1. Voltage Measurement

12.2. Waveform

13 Wiring Connection Diagram

14 Block Diagram

15 Notes Of Schematic Diagram

16 Schematic Diagram

16.1. CD Servo Circuit

16.2. Main Circuit

16.3. Panel Circuit

16.4. Power Circuit

16.5. Transformer Circuit

16.6. Tuner Extent Circuit, Headphone Circuit and Speaker

Terminal Circuit

16.7. XM Ready Circuit

17 Printed Circuit Board

17.1. CD Servo P.C.B and Panel P.C.B

0.6 W

17.2. Main P.C.B and Tuner Extent P.C.B 64

17.3. Power P.C.B and Speaker Terminal P.C.B

17.4. Transformer P.C.B, Headphone P.C.B and XM Ready

P.C.B

18 Illustration of IC's, Transistors and Diodes

19 Terminal Function of IC's

19.1. IC7001 (MN6627954MA) IC SERVO

PROCESSOR/DIGITAL SIGNAL PROCESSOR/DIGITA L

FILTER D/A CONVERTER

19.2. IC7002 (BA5948FPE2) IC 4CH Drive

19.3. IC803 (MN101CP49KAF) MICROPROCESSOR

20 Troubleshooting Flowchart (CD Section Circuit)

21 Exploded Views

21.1. Cabinet Parts Location

21.2. Traverse Deck Part Location

21.3. Packaging

22 Replacement Parts List

SA-PM321P

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 exposed to shock hazards.

1.1.1. Leakage Current Cold Check

1. Unplug the AC cord and connect 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 cabine t 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 1MΩ and 5.2Ω. When the exposed metal does not have a return path to the chassis, the reading must be

Figure 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 transformer 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 exposed 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.

SA-PM321P

1.2. Before Repair and Adjustment

Disconnect AC power, discharge Power Supply Capacitors C272, C472, C501, C909, C910, C911 & C923 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 120 V, 60 Hz in NO SIGNAL mode (at volume minimum) should be ~300 mA.

1.3. 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.

1.4. Caution For Fuse Replacement

SA-PM321P

2 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by electro static discharge (ESD).

1. Immediately before handling any semiconductor component or semiconductor-equiped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equiped with ES devices, place the assembly on a conductive surface such as aluminium foil, to prevent electrostatic charge build up or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static solder remover device. Some solder removal devices not classified as “anti-static (ESD protected)” can generate electrical charge to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or comparable conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installe d.

Caution

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize body motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device).

SA-PM321P

3 Precaution of Laser Diode

CAUTION:

This unit utilizes a class 1 laser.

Invisible laser radiation is emitted from the optical pickup lens.

When the unit is turned on:

1. Do not look directly into the pick up lens.

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

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

4. Do not disassemble the optical pick up unit.

5. If the optical pick up is replaced, use the manufacturer’s specified replacement pick up only.

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

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.

SA-PM321P

4 Handling Precautions For Traverse Deck

The laser diode in the traverse deck (optical pickup) may break down due to potential differe nce 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.

3. Take care not to apply excessive stress to the flexible board (FFC board) (Fig 4.1).

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

Fig 4.2

Fig 4.1

l Grounding for electrostatic breakdown prevention

1. Human body grounding (Fig 4.2)

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

2. Work table grounding (Fig 4.2)

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).

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.

SA-PM321P

5 Service caution based on legal restrictions

5.1. General description about Lead Free Solder (PbF)

The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this equipment in considering the globally environmental conservation.

The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin (Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86°F) more than that of the normal solder.

Definition of PCB Lead Free Solder being used

The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder. (See right figure)

Service caution for repair work using Lead Free Solder (PbF)

· The lead free solder has to be used when repairing the equipment for which the lead free solder is used.

(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)

· To put lead free solder, it should be well molten and mixed with the original lead free solder.

· Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.

· Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt

the lead free solder.

· Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30

degrees C (662±86°F).

Recommended Lead Free Solder (Service Parts Route.)

· The following 3 types of lead free solder are available through the service parts route.

RFKZ03D01K-----------(0.3mm 100g Reel)

RFKZ06D01K-----------(0.6mm 100g Reel)

RFKZ10D01K-----------(1.0mm 100g Reel)

Note

* Ingredient: tin (Sn), 96.5%, silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%

SA-PM321P

6 Accessories

Note : Refer to Packing Materials & Accessories (Section 22) for part number.

Remote control

AC cord

FM indoor

antenna

AM loop antenna

7 Operating Instructions Procedures

7.1. Main Unit & Remote Control Operation

SA-PM321P

7.2. Disc Information

8 Self diagnosis and special mode setting

This unit is equipped with features of self-diagnostic & special mode setting for checking the functions & reliability.

8.1. Special Mode Table

Below is the various special modes for checking:-

Item FL Display Key Operation

Mode Name Description Front Key

Self -Diagnostic

Mode

Doctor Mode To enter into Doctor

To enter into self diagnostic checking for main unit.

Mode for checking of various items and displaying EEPROM and firmware version. (For more information, refer to section 8.1.2)

Note: The microprocessor version as shown is an example. It will be revise when there is an updates.

The Check Sum of EEPROM and firmware version will be display for 1 sec.

1. Select [ ] for CD mode (Ensure no tape or CD inserted).

2. Press and hold [ seconds follow by [

To exit, press remote control.

In any mode:

1. Press [ by [4] and [7] on remote control.

To exit, press remote control.

button on main unit or

] button on main unit follow

button on main unit or

]button for 2

SA-PM321P

FL Display Test To check the FL

segments display (All segments will light up)

Volume Setting To Forced Volume

Setting.

Traverse Test To determine the

reliability of CD unit.

* ROM correction ** Firmware version No:

In doctor mode:

1. Press [DIMMER] button on remote control.

To exit, press remote control.

In doctor mode:

1. Press [7] button on remote control.

2. Press [8] button on remote control.

3. Press [9] button on remote control.

To exit, press remote control.

In doctor Mode:

1. Press [

To exit, press remote control.

button on main unit or

], [1], [2] button on remote control.

button on main unit or

Cold Start To activate cold start ipon

next AC power up.

In doctor mode:

1. Press [SLEEP] button on remote control.

To exit, press remote control.

8.1.1. EEPROM Checksum (ROM correction)

Purpose : To check for micro-processor firmware version & EEPROM check (ROM correction).

button on main unit or

SA-PM321P

Below is the procedures for this mode.

Step 1: Enter into Doctor mode (For more information refer to section 8.1 on key operation to enter into this mode.

Step 2: Check for firmware version & EEPROM checksum.

· W hen entering into DOCTOR MODE the firmware version & checksum of EEPROM (if applica ble) will appear on FL display.

Below is information on the EEPROM IC (Rom correction) under 3 examples:

1. When EEPROM IC is detected and there is no ROM correction:

2. When EEPROM IC is detected and has ROM correction:

3. When EEPROM IC is detected and has ROM correction but working properly.

Note: Micro-processor firmware version refers to version No. (Eg.MS079_12) for micro-processor IC.

It is subject to change which would update accordingly.

· Rom correction checksum refers to the hex code that is display upon key buttons pressed if an EEPROM is loaded in the unit.

(Main P.C.B)

8.2. Error Code Table

Self-Diagnosis Function provides information on any problems occuring for the unit and its respective components by displaying error codes. Thesed error code such as U**, H** and F** are stored in memory and held unless it is cleared.

The error code is automatically display after entering into self-diagnostic mode.

Error Code Diagnosis Contents Description of error Automatic FL Display Remarks

F15 CD REST SW

Abnormal

F26 Communication

between CD servo LSI and micro-p abnormal.

CD traverse position intial setting operation failsafe counter (1000 ms) waiting for REST SW toturn on. Error No. shall be clear by force or during cold start.

CD function DTMS command, after system setting, If SENSE = ´L´ cannot be detected. Memory shall contain F26 code. After Power on, CD function shall continue, error display shall be "NO DISC". Error No. shall be clear by force or cold start.

For CD unit (For Traverse). Press [ error.

] on main unit for next

Error Code Diagnosis Contents Description of error Automatic FL Display Remarks

POWER AMP output abnormal

During normal operation, if DCDET becomes "L", normal POWER OFF process shall not be

For Power Supply Related Error Detection. Press [

error. executed, PCONT shall be switched to "L" immediately. "GOODBYE" shall not be display but the error display F61 is displayed instead. 2 seconds after the F61 displayed, ECONO shall be set to "L" and FL display shall be turned off. The error content shall be memorized when the abnormality occurs and can be display in the C-mecha self-diagnostic mode described later.

SA-PM321P

] on main unit for next

SA-PM321P

9 Assembling and Disassembling

9.1. Caution

“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.

Warning:

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

Below is the list of disassembly sections

· Disasse mbly of Side Panel L & R

· Disasse mbly of Top Cabinet Unit

· Disasse mbly of Headphone P.C.B

· Disasse mbly of Front Panel

· Disasse mbly of Panel P.C.B

· Disasse mbly of Rear Panel

· Disasse mbly of XM Ready P.C.B

· Disasse mbly of Tuner Pack

· Disasse mbly of Main P.C.B

· Disasse mbly of Power P.C.B

· Disasse mbly of Speaker Terminal P.C.B

· Disasse mbly of Transformer P.C.B

· Disasse mbly of CD Mechanism

· Disasse mbly of Traverse Unit, Driving Gear, and Cam Gear (CD Mechanism Unit)

· Disasse mbly of Optical Pickup (CD Mechanism Unit)

· Disasse mbly of Traverse Gear A and Traverse Gear B (CD Mechanism Unit)

SA-PM321P

9.2. 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-PM321P

9.3. Main Parts Location Diagram

9.4. Disassembly of Side Panel L & R

· Disasse mbly of Side Panel (R)

Step 1: Remove 5 screws.

Step 2: Remove the side panel (R) as arrow shown.

SA-PM321P

9.5. Disassembly of Top Cabinet Unit

Step 1: Remove 3 screws.

· Disasse mbly of Side Panel (L)

Step 3: Remove 5 screws.

Step 4: Remove the side panel (L) as arrow shown.

Step 2: Remove 3 screws.

Step 3: Lift up the top cabine t unit, push backward as arrow shown and flip top cabinet unit sideway. (Be careful of the catch)

SA-PM321P

Step 1: Detach connector (CN900B).

Step 4: Detach connector (CN504A).

Step 5: Remove top cabine t unit.

9.6. Disassembly of Headphone P.C.B

· Follow the (Step 1) - (Step 5) of Item 9.5.

Step 1: Remove 1 screw.

Step 2: Release the clutch.

Step 3: Remove the Headp hone P.C.B.

Step 2: Disconnect FFC cable (CN901B).

9.7. Disassembly of Front Panel

· Follow the (Step 1) - (Step 4) of Item 9.4.

· Follow the (Step 3) - (Step 5) of Item 9.5.

Step 1: Remove 10 screws.

Step 2: Remove the Volume Knob.

Step 3: Release 2 catches.

Step 4: Remove the Panel P.C.B.

SA-PM321P

Step 3: Release 3 claws.

Step 4: Remove the Front Panel as arrow shown.

9.8. Disassembly of Panel P.C.B

· Follow the (Step 1) - (Step 4) of Item 9.4.

· Follow the (Step 3) - (Step 5) of Item 9.5.

· Follow the (Step 1) - (Step 4) of Item 9.7.

9.9. Disassembly of Rear Panel

· Follow the (Step 1) - (Step 4) of Item 9.4.

· Follow the (Step 3) - (Step 5) of Item 9.5.

Step 1: Remove 5 screws.

SA-PM321P

Step 2: Detach FFC cable (CN900) and remove the Rear Panel as arrow shown.

Step 3: Unsolder 4 points to remove XM Ready P.C.B.

9.11. Disassembly of Tuner Pack

9.10. Disassembly of XM Ready P.C.B

· Follow the (Step 1) - (Step 4) of Item 9.4.

· Follow the (Step 3) - (Step 5) of Item 9.5.

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

Step 1: Remove 1 screw.

· Follow the (Step 1) - (Step 4) of Item 9.4.

· Follow the (Step 3) - (Step 5) of Item 9.5.

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

Step 1: Detach the connector CN401A and remove the tuner pack as arrow shown.

9.12. Disassembly of Main P.C.B

Step 2: Remove the XM Ready unit as arrow shown.

· Follow the (Step 1) - (Step 4) of Item 9.4.

· Follow the (Step 3) - (Step 5) of Item 9.5.

· Follow the (Step 1) - (step 4) of Item 9.7.

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

SA-PM321P

Step 1: Detach the FFC CN801.

Step 1: Detach the connector CN505B.

Step 2: Detach connector CP800.

Step 3: Detach connector CN803B and CN808 B.

Step 4: Remove the Main P.C.B as arrow shown.

9.13. Disassembly of Power P.C.B

· Follow the (Step 1) - (Step 4) of Item 9.4.

· Follow the (Step 3) - (Step 5) of Item 9.5.

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

Step 2: Remove 1 screw.

Step 3: Detach the connector CN501B, CN508B and CN503B.

Step 4: Remove the Power P.C.B as arrow shown.

· Replacement of Power Amplifier IC

SA-PM321P

Step 5: Remove 3 screws.

Step 6: Unsolder the terminal of Power Amp IC (IC500) and replace the component.

Step 7: Unsolder the terminal of Transistor (Q503) and replace the component.

9.14. Disassembly of Speaker Terminal P.C.B

· Follow the (Step 1) - (Step 4) of Item 9.4.

· Follow the (Step 3) - (Step 5) of Item 9.5.

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

· Follow the (Step 3) of Item 9.12.

· Follow the (Step 1) - (step 4) of Item 9.13.

Step 1: Remove 1 screw.

Step 2: Release the clutch.

Step 3: Remove the Speaker Terminal P.C.B as arrow shown.

9.15. Disassembly of Transformer P.C.B

· Follow the (Step 1) - (Step 4) of Item 9.4.

· Follow the (Step 3) - (Step 5) of Item 9.5.

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

· Follow the (Step 1) - (Step 4) of Item 9.13.

Step 1: Remove 4 screws.

Step 2: Remove the Main P.C.B support.

Step 3: Remove CD Mechanism as arrow shown.

SA-PM321P

Step 1: Detach the connector CN900B.

Step 2: Remove 4 screws.

Step 3: Remove the Transformer P.C.B as arrow shown.

9.16. Disassembly of CD Mechanism

· Follow the (Step 1) - (Step 4) of Item 9.4.

· Follow the (Step 3) - (step 5) of Item 9.5.

· Follow the (Step 1) - (step 4) of Item 9.7.

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

· Follow the (Step 1) - (step 4) of Item 9.12.

9.17. Disassembly of Traverse Unit, Driving Gear, and Cam Gear (CD Mechanism Unit)

9.17.1. Disassembly of the Traverse Unit

· Follow the (Step 1) - (Step 4) of Item 9.4.

· Follow the (Step 3) - (Step 5) of Item 9.5.

· Follow the (Step 1) - (Step 4) of Item 9.7.

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

· Follow the (Step 1) - (Step 4) of Item 9.12.

· Follow the (Step 1) - (Step 3) of Item 9.16.

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