Panasonic SAPMX-3-GN Service manual

CD Stereo System

SA-PMX3GN

Colour

(S)... Silver Type

ORDER NO. MD0806017CE

Notes: This model’s mechanism unit is DLS6C. Please refer to the original Service Manual (Order No. MD0803034CE) for this mechanism.

Specifications

AMPLIFIER SECTION

RMS output power Stereo Mode

Front Ch (both ch driven) 80 W per channel (3 Ω), 1 kHz,

10% THD

otal RMS Stereo mode power 160 W

FM/AM TUNER, TERMINALS SECTION

Preset memory FM 30 stations

AM 15 stations

FrequencyModulation (FM)

Frequencyrange 87.50 to 108.00 MHz

(50 kHz step)

Sensitivit

S/N 50 dB 9.0 dBµV

ntenna terminals 75 Ω (unbalanced)

mplitude Modulation (AM)

Frequencyrange 522 to 1629 kHz (9 kHz step)

M Sensitivity S/N 20dB at 999

kHz

Music Port input jack

Sensitivit

erminal Stereo, 3.5 mm jack

Phone jack

erminal Stereo, 3.5 mm jack

Option port Version 1

4.5 dBµV (IHF)

660 µV/m

100 mV, 11 kΩ

I CD SECTION

Disc played (8 cm or 12 cm)

(1) CD, CD-R/RW (CD-DA, MP3 *)

* MPEG-1 Layer 3, MPEG-2 Layer 3

Pick up

Wavelength (CD) 785 nm

Laser power (CD) CLASS 1

Audio output (Disc)

Number of channels (FL, FR), 2 Channel

I USB SECTION

USB port

USB standard USB 2.0 full speed

Media file format support MP3 (*.mp3)

USB device file system FAT 12 / FAT 16 / FAT 32

USB port power Max 500 mA

USB ripping bit rate 128 / 192 / 320 kbps

Frequency response 4Hzto20kHz

Output level ( 1 kHz, 0 dB) 1000 mV ± 150 mV

S/N ratio >80dB

Dynamic range >80dB

Separation >60dB

Total harmonic distortion <0.1%

USB recording speed 1x, 4x (CD only)

SA-PMX3GN

Recording file format MP3 (*.mp3)

I GENERAL

Power supply AC 230 to 240 V, 50 Hz

Power consumption 85 W

Dimensions (W x H x D) 175 mm x 240 mm x 349.8 mm

Mass 4.5 kg

Operating temperature range 0°C to +40°C

Operating humidity range 35 to 80% RH (no condensation)

Power consumption in standby mode

Note:

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

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

I System: SC-PMX3GN-S Music center: SA-PMX3GN-S

0.7 W (Approximate)

Speakers: SB-PMX3EG-K

CONTENTS

Page Page

1 Safety Precautions

2 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices

3 Precaution of Laser Diode

4 Handling Precautions for Traverse Unit

5 Handling the Lead Free Solder

6 Operation Procedures

7 Self diagnosis and special mode setting

8 Assembling and Disassembling

9 Assembling and Disassembling of CD Mechanism Unit

10 Service Fixture and Tools

11 Service Position 43

12 Voltage Measurement & Waveform Chart

13 Wiring Connection Diagram

14 Block Diagram

15 Notes Of Schematic Diagram

16 Schematic Diagram

17 Printed Circuit Board

18 Illustration of IC’s, Transistors and Diodes

19 Terminal Function of IC’s

20 Exploded Views

21 Replacement Parts List

SA-PMX3GN

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 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 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 1MΩ and 5.2Ω. When the exposed metal does not have a return path to the chassis, the reading must be

1.1.2. Leakage Current Hot Check

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.

Figure 1

SA-PMX3GN

1.2. Before Repair and Adjustment

Disconnect AC power, discharge Power Supply Capacitors C2602, C2641, C2642, C5015, C5016, C5110, C5916, C5917 and C5938 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 230-240 V, at 50 Hz in NO SIGNAL mode (at volume min) 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. Safety Part Information

Safety Parts List:

There are special components used in this equipment which are important for safety.These parts are marked by Schematic Diagrams & Replac ement Parts List. It is essential that these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of manufacturer.

Table 1

Reference No. Part No. Part Name & Description Remarks A2 K2CJ2DA00008 AC CORD [M] JK5970 K2AA2B000017 AC INLET [M] T5900 G4CYAYY00174 POWER TRANSFORMER [M] T5901 G4CYAYY00137 SUB-TRANSFORMER [M] F5970 K5D162BLA013 FUSE [M] L5970 ELF15N035AN LINE FILTER [M] RL5970 K6B1AEA00003 POWER RELAY [M] Z5970 ERZVA5Z471 ZENER [M] FP5920 K5G402AA0002 FUSE PROTECTOR [M] FP5922 K5G202AA0002 FUSE PROTECTOR [M] 22 RFKHAPMX3GNS REAR CABINET ASS´Y [M] 21 RKMX0142-S TOP CABINET [M] PCB1 REPX0633A TRANSFORMER P.C.B. [M] (RTL) 301 RAEX0190Z-V TRAVERSE UNIT [M] (RTL)

in the

SA-PMX3GN

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 inciden ce of component damage caused by electro static discharge (ESD).

1. Immediately before handlin g any semiconductor component or semiconductor-equiped assembly, drain off any ESD on your body by touchin g 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 applyin g 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 installed.

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-PMX3GN

3 Precaution of Laser Diode

CAUTION :

This product utilizes a laser diode with the unit turned "on", invisible laser radiation is emitted from the pickup lens. Wavelength: 785 nm (CD) Maximum output radiation power from pickup: 100 µW/VDE

Laser radiation from the pickup unit is safety level, but be sure the followings:

1. Do not disassemble the 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.

SA-PMX3GN

4 Handling Precautions for Traverse Unit

The laser diode in the optical pickup unit may break down due to static electricity of clothes or human body. Special care must be taken avoid caution to electrostatic breakdown when servicing and handling the laser diode in the traverse unit.

4.1. Cautions to Be Taken in Handling the Optical Pickup Unit

The laser diode in the optical pickup unit may be damaged due to electrostatic discharge generating from clothes or human body. Special care must be taken avoid caution to electrostatic discharge damage when servicing the laser diode.

1. Do not give a considerable shock to the optical pickup unit as it has an extremely high-precise structure.

2. To prevent the laser diode from the electrostatic discharge damage, the flexible cable of the optical pickup unit removed should be short-circuited with a short pin or a clip.

3. The flexible cable may be cut off if an excessive force is applied to it. Use caution when handling the flexible cable.

4. The antistatic FPC is connected to the new optical pickup unit. After replacing the optical pickup unit and connecting the flexible cable, cut off the antistatic FPC.

4.2. Grounding for electrostatic breakdown prevention

Some devices such as the DVD player use the optical pickup (laser diode) and the optical pickup will be damaged by static electricity in the working environment. Proceed servicing works under the working environment where grounding works is completed.

4.2.1. Worktable grounding

1. Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed, and ground the sheet.

SA-PMX3GN

4.2.2. Human body grounding

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

SA-PMX3GN

5 Handling the Lead Free Solder

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-PMX3GN

6 Operation Procedures

6.1. Main Unit Key Buttons Operation

6.2. Remote Control Key Buttons Operation

SA-PMX3GN

6.3. Disc Information

SA-PMX3GN

7 Self diagnosis and special mode setting

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

Special Note : Checking of the reliability (ageing) & changer operation must be carry out to ensure good working condition in unit.

7.1. Service Mode Summary Table

The service modes can be activated by pressing various button combination on the main unit and remote control unit.Below is the summary for the various modes for checking:

Player buttons Remote control unit buttons Application Note

[STOP] [4], [7] Entering into doctor mode (Refer to section .7.2.1. service mode

[STOP] [ ] Entering into service mode (Refer to section .7.2.1. service mode

Mode Remote control unit buttons Application Note

In Doctor Mode [1] FL all segment & LED inspection (Refer to section .7.2.2. service mode

[MUSIC.P] Tuner Check (Refer to section .7.2.2. service mode

[7] Volume 50 setting check (Refer to section .7.2.2. service mode

[8] Volume 29 setting check (Refer to section .7.2.2. service mode

[9] Volume 0 setting check (Refer to section .7.2.2. service mode

[2] Micro-P Version Display (Refer to section .7.2.2. service mode

[4] CD→USB Recording & Playing inspection (Refer to section .7.2.2. service mode

[5] CD-MP3 Reading & Playing inspection (Refer to section .7.2.2. service mode

[ ], [1], [1] CD Loading Test Mode (Refer to section .7.2.2. service mode

[ ], [1], [2] CD Traverse Unit Test Mode (Refer to section .7.2.2. service mode

[ ], [1], [3] CD Combination Test Mode (Refer to section .7.2.2. service mode

Table 1 for more information.)

Table 2 for more information.)

Mode Remote control unit buttons Application Note

In Service Mode [1] self diagnostic history (Refer to section .7.2.3. service mode

[2] Micro-P FW (Refer to section .7.2.3. service mode

[3] Cold Start (Reset) (Refer to section .7.2.3. service mode

Table 3 for more information.)

7.2. Service Mode Table

Below is the various special modes for checking:-

7.2.1. Service Mode Table 1

Item FL Display Key Operation

Mode Name Description Front Key

Doctor Mode To enter into Doctor

Mode.

Service Mode To enter into Service

Mode.

In any mode:

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

To exit Doctor Mode, press [ main unit or remote control.

1. Select [CD] for DISC mode (Ensure no disc is inserted).

2. Press and hold [ unit for 2 seconds follow by [ remote control.

To exit, press [ remote control.

] button on main unit follow

] button on

]button on main

]on

] button on main unit or

7.2.2. Service Mode Table 2

Item FL Display Key Operation

Mode Name Description Front Key

FL Display Test To check the FL

segments display (All segments will light up)

In doctor mode:

1. Press [1] button on remote control.

To exit Doctor Mode, press [ main unit or remote control.

SA-PMX3GN

] button on

Tuner Check To Inspect Tuner Check In doctor mode:

Volume Setting Mode

Micro-P Version Display

To check for the volume setting of the main unit. The volume will be automatically set to its respective level (in dB). During this mode, treble/bass/EQ will be set to ‘0’dB & OFF.

Checking of various items and firmware version.

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

Display 1 In doctor mode:

1. Press [MUSIC.P] button on remote control.

To exit Doctor Mode, press [ main unit or remote control.

1. Press [7] button on remote control. To exit Doctor Mode, press [ main unit or remote control.

2. Press [8] button on remote control. To exit Doctor Mode, press [ main unit or remote control.

3. Press [9] button on remote control. To exit Doctor Mode, press [ main unit or remote control.

In doctor mode:

1. Press [2] button on remote control.

To exit Doctor Mode, press [ main unit or remote control.

] button on

CD→USB Recording & Playing inspection

To check for the CD→USB Recording setting of the main unit. The volume will be automatically set to its respective level (in dB). During this mode, treble/bass/EQ will be set to ‘0’dB & OFF.

In doctor mode:

1. Press [4] button on remote control.

To exit Doctor Mode, press [ main unit or remote control.

] button on

SA-PMX3GN

Item FL Display Key Operation

Mode Name Description Front Key

CD-MP3 Reading & Playing inspection

CD Loading Test Mode

To check for the CD-MP3 Reading setting of the main unit. The volume will be automatically set to its respective level (in dB). During this mode, treble/bass/EQ will be set to ‘0’dB & OFF.

(For more information, refer to section 8.2.4)

To determine the reliability of CD Loading Unit.

To check for the open/close operation for the CD loading unit. It fails when there is abnormality in opening or closing.

In doctor mode:

1. Press [5] button on remote control.

To exit Doctor Mode, press [ main unit or remote control.

In doctor Mode:

1. Press [

To cancel, press [PROGRAM] button on remote control. To exit Doctor Mode, press [ main unit or remote control.

] button on

], [1] & [1] button on remote

control.

] button on

CD Traverse Unit Test Mode

CD Combination Test Mode

To check for the traverse unit operation. In this mode, the first & lost track is access & read (TOC). It fails when TOC is not completed by IDS or the traverse is out of focus.

A combination of CD loading & Traverse unit test.

In doctor Mode:

1. Press [

To cancel, press [PROGRAM] button on remote control. To exit Doctor Mode, press [ main unit or remote control.

In doctor Mode:

1. Press [

To cancel, press [PROGRAM] button on remote control. To exit Doctor Mode, press [ main unit or remote control.

7.2.3. Service Mode Table 3

Item FL Display Key Operation

Mode Name Description Front Key

Self Diagnostic History

Micro-P Version Display

Checking the records for self-diagnostic.

Checking of various items and firmware version.

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

(Display 1)

In service mode:

1. Press [1] button on remote control.

To exit Service Mode, press [ main unit or remote control. To clear history, press & hold [0] for 5 seconds or more.

In service mode:

1. Press [2] button on remote control.

To exit Service Mode, press [ main unit or remote control.

control.

], [1] & [2] button on remote

] button on

], [1] & [3] button on remote

control.

] button on

FL Display sequenceDisplay [

]

(Display 2)

Item FL Display Key Operation

Mode Name Description Front Key

Cold Start (Reset) To activate cold start

ipon next AC power up.

In service mode:

1. Press [3] button on remote control.

To exit Service Mode, press [ main unit or remote control.

] button on

7.2.4. CD-MP3 Reading & Playing inspection

Purpose : CD-MP3 Readin g & Playing test.

Below is the procedures for this mode.

Step 1 : Enter into Doctor mode. (For more information refer to section 7.1 on key operation to enter into this mode)

Step 2 : Insert CD with MP3 tracks. (Ensure correct MP3 tracks is loaded)

Step 3 : Press [5] button on remote control. Execute MP3 Disc Check (Refer Flowchart below)

SA-PMX3GN

Result display :

• Displayed if MP3 test OK

• Displayed if MP3 test NG

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7.3. Error Code Table

7.3.1. Traverse Error Code Table

Error Code Diagnosis Contents Description of error Automatic FL Display Remarks

F15 CD REST SW

Abnormal

CD F26 Communication

between CD servo LSI and micro-p abnormal.

At initial setting of CD traverse position, if the RESET SW ON is not detected even though the fail safe timer time is over (10 sec), it is memorized as an error and the error number can be cleared only at the start up of micro-p after reset.

1) At the time of switching to CD function, SENSE = H shall be detected using DTMS system setting command. If the error is memorized when SENSE = L is not detected within fail safe timer time (20 mSec), [F26] shall be displayed simultaneously. This display shall be retained if the power is ON and at CD function. If this error occurs, CD operation afterward shall not be executed as in the case of [NO DISC].

2) This error number can be cleared only at the start up of micro-p reset.

Press [1] on remote control for next error.

7.3.2. Power Supply & Digital Amplifier Error Code Table

Error Code Diagnosis Contents Description of error Automatic FL Display Remarks

F61 The abnormalities in

an output or power supply circuit of POWER AMP

F76 Abnormality in the

output voltage of stabilized power supply.

In normal operation, when DCDET2 goes to “L” (Low) (Not during POWER OFF condition), F61 appears on FL Display for 1 second and PCONT goes to “L” (Low). This is due to speaker output has DC voltage or fan is not working.

In normal operation when DCDET1 is detected “L” (Low) for two consecutive times, F76 is displayed on FL for 1 second and after that PCONT will be turned to “L” (Low). This is due to any of the DC voltages.

Press [1] on remote control for next error.

Press [1] on main unit for next error.

SA-PMX3GN

8 Assembling and Disassembling

“ATTENTION SERVICER”

Be careful when disassembling and servicing.

Some chassis components may have sharp edges.

Special Note:

1. This model uses a CD mechanism unit (DLS6C). In this following section does not contain the necessary assembly and disassembly information except the assembly and disassembly of the traverse unit. Kindly refer to the original service manual for the CD mechanism unit. (Order No. MD0803034CE).

2. This section describes the disassembly procedures for all the major printed circuit boards and main components.

3. Before the disassembly process was carried out, do take special note that all safety precautions are to be carried out.

(Ensure that no AC power supply is connected during disassembling.)

4. For assembly after operation checks or replacement, reverse the respec tive procedures.

Special reassembly procedures are described only when required.

5. Do take note of the locators on each printed circuit board during reassembling procedures.

6. The Switch Regulator IC may have high temperature after prolonged use.

7. Use caution when removing the top cabinet and avoid touching heat sinks located in the unit.

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

• Disassembly of Top Panel

• Disassembly of Front Panel

• Disassembly of Jupiter P.C.B.

• Disassembly of Panel A P.C.B.

• Disassembly of Panel B P.C.B.

• Disassembly of Jupiter USB P.C.B.

• Disassembly of Rear Panel

• Disassembly of D-Port P.C.B.

• Disassembly of Main P.C.B.

• Disassembly of Transformer P.C.B.

• Replacement of Transistor (Q5927)

• Replacement of Transistor (Q5921)

• Disassembly of Power P.C.B.

• Replacement of Digital Power-Amp IC (IC5000)

• Replacement of Transistor (Q5105)

• Replacement of Transistor (Q5103)

• Replacement of Transistor (Q5100)

• Disassembly of Inner Chassis

• Disassembly of Mechanism Unit

• Disassembly of CD Servo P.C.B.

• Disassembly of USB Lid

• Disassembly of CD Lid

SA-PMX3GN

8.1. 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.

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8.2. Main Parts Location Diagram

8.3. Disassembly of Top Panel

Step 1 : Remove 2 screws at the side of Top Panel (L).

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Step 5 : Lift up the back part of the Top Panel and remove it in the direction of arrow.

Note : During assembling of top panel, ensure it seats properly.

Step 2 : Remove 2 screws at the side of Top Panel (R).

Step 3 : Remove 4 screws at the rear of Top Panel.

Step 4 : Lift both sides of Top Panel outwards in the direction

of arrow.

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8.4. Disassembly of Front Panel

• Follow the (Step 1) - (Step 5) of Item 8.3

Step 1 : Detach 4P cable at the connector (CN5904) on Transformer P.C.B..

Step 2 : Detach 20P FFC cable at the connector (CN2804) on Main P.C.B..

Step 3 : Detach 17P FFC cable at the connector (CN2803) on Main P.C.B..

Step 4 : Detach 4P cable at the connector (CN2809) on Main P.C.B..

Step 5 : Remove 1 screw on Bridge P.C.B..

Caution : Do not exert strong force when releasing the

catches.

Step 6 : Release the catch at each side of the Front Panel in the direction of arrow.

Step 7 : Release the catches at the bottom of the Front Panel.

Step 8 : Remove Front Panel.

8.5. Disassembly of Jupiter P.C.B.

• Follow the (Step 1) - (Step 5) of Item 8.3

• Follow the (Step 1) - (Step 8) of Item 8.4

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Step 7 : Desolder 4 points.

Step 8 : Remove Jupiter P.C.B..

Note : During reassembling procedures, ensure 4 points is solder onto Jupiter P.C.B..

8.6. Disassembly of Panel A P.C.B.

• Follow the (Step 1) - (Step 5) of Item 8.3

• Follow the (Step 1) - (Step 8) of Item 8.4

• Follow the (Step 1) - (Step 4) of Item 8.5

Step 1 : Detach 5P cable at the connector (CN503) on Jupiter P.C.B..

Step 2 : Detach 6P FFC cable at the connector (CN502) on Jupiter P.C.B..

Step 3 : Remove 2 screws.

Caution : Keep the Ground wire in safe place. Place it back

during assembling.

Step 4 : Remove the Jupiter Unit.

• Disassembly of Jupiter P.C.B. (Jupiter Unit)

Step 5 : Release all the catches.

Step 6 : Remove Jupiter Cover.

Step 1 : Remove the Volume Knob.

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Step 2 : Remove 7 screws on the Panel A P.C.B..

8.7. Disassembly of Panel B P.C.B.

• Follow the (Step 1) - (Step 5) of Item 8.3

• Follow the (Step 1) - (Step 8) of Item 8.4

Step 3 : Release all the catches.

Step 4 : Release Panel A P.C.B..

Note: During reassembling procedures, ensure Panel A P.C.B. is fully catched onto Front Panel.

Step 5 : Desolder 6P cable (WH6802) at Panel A P.C.B..

Step 6 : Remove Panel A P.C.B..

Note: During reassembling procedures, ensure 6P cable (WH6802) are soldered on Panel A P.C.B..

Step 1 : Remove the Bass Knob and Treble Knob.

Step 2 : Remove 1 screw from Panel B P.C.B..

Step 3 : Release all the catches.

Step 4 : Release Panel B P.C.B..

Note: During reassembling procedures, ensure Panel B P.C.B. is fully catched onto Front Panel.

Step 5 : Desolder 6P cable (WH6881) at Panel B P.C.B..

Step 6 : Remove Panel B P.C.B..

Note: During reassembling procedures, ensure 6P cable (WH6881) are soldered on Panel B P.C.B..

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8.9. Disassembly of Rear Panel

• Follow the (Step 1) - (Step 5) of Item 8.3

8.8. Disassembly of Jupiter USB

P.C.B.

• Follow the (Step 1) - (Step 5) of Item 8.3

• Follow the (Step 1) - (Step 8) of Item 8.4

• Follow the (Step 1) - (Step 4) of Item 8.5

• Follow the (Step 1) - (Step 4) of Item 8.6

Step 1 : Detach 2P cable at the connector (CN2806) on Main P.C.B..

Step 2 : Detach 14P FFC cable at the connector (CN2801) on Main P.C.B..

Step 3 : Remove cable from Support P.C.B..

Step 1 : Remove Jupiter USB P.C.B. from Front Panel in the

direction of arrow.

Step 4 : Remove 7 screws from the Rear Panel.

SA-PMX3GN

Step 5 : Releas e the catch at each side of the Rear Panel in the direction of arrow.

Step 6 : Remove Rear Panel.

8.10. Disassembly of D-Port P.C.B.

• Follow the (Step 1) - (Step 5) of Item 8.3

• Follow the (Step 1) - (Step 6) of Item 8.9

8.11. Disassembly of Main P.C.B.

• Follow the (Step 1) - (Step 5) of Item 8.3

• Follow the (Step 1) - (Step 6) of Item 8.9

Step 1 : Detach 22P FFC cable at the connector (CN2802) on Main P.C.B..

Step 2 : Detach 20P FFC cable at the connector (CN2804) on Main P.C.B..

Step 3 : Detach 17P FFC cable at the connector (CN2803) on Main P.C.B..

Step 4 : Detach 4P cable at the connector (CN2809) on Main P.C.B..

Step 1 : Remove 2 screws from D-Port P.C.B..

Step 2 : Remove D-Port P.C.B..

Step 5 : Remove 22P FFC cable from Main P.C.B. in the

direction of arrow.

Step 6 : Remove 1 screw from Main P.C.B..

Step 7 : Lift up to remove Main P.C.B..

SA-PMX3GN

8.12. Disassembly of Transformer P.C.B.

• Follow the (Step 1) - (Step 5) of Item 8.3

• Follow the (Step 1) - (Step 6) of Item 8.9

Note: During reassembling procedures, ensure that Main P.C.B. is properly connected to Bridge P.C.B. and Power P.C.B..

Step 1 : Detach 8P cable at the connector (CN5104) on Power

P.C.B..

Step 2 : Remove 8P cable from Support P.C.B..

Step 3 : Remove 4 screws at Inner Chassis.

Step 4 : Detach 4P cable (CN5904) at the connector on

Transformer P.C.B..

SA-PMX3GN

8.13. Replacement of Transistor (Q5927)

• Follow the (Step 1) - (Step 5) of Item 8.3

• Follow the (Step 1) - (Step 6) of Item 8.9

• Follow the (Step 1) - (Step 5) of Item 8.12

Step 5 : Lift up to remove Transformer P.C.B..

Note: During reassembling procedures, ensure the 8P cable is properly dresse d into the Support P.C.B..

Step 1 : Desolder pins of Transistor (Q5927) on reverse side of

Transformer P.C.B..

Step 2 : Remove 1 screw.

Step 3 : Remove the Transistor (Q5927).

Caution : Avoid touching the Heat Sink during replacement

due to its hight temperature as it may lead to injuries/shock.

8.13.1. Assembly of the Transistor (Q5927)

SA-PMX3GN

8.14. Replacement of Transistor (Q5921)

• Follow the (Step 1) - (Step 5) of Item 8.3

• Follow the (Step 1) - (Step 6) of Item 8.9

• Follow the (Step 1) - (Step 5) of Item 8.12

Step 1 : Mount the transistor (Q5927) onto the Transformer P.C.B..

Caution : Ensure all pins are seated properly.

Step 2 : Fix 1 screw to attach the transistor (Q5927) to the Heat

Sink.

Step 3 : Solder the pins of the Transistor (Q5927) on the reverse side of the transformer P.C.B..

Caution : Before soldering, ensure all pins are properly seated and no ‘floating’ of pins.

Step 1 : Desolder pins of Transistor (Q5921) on reverse side of Transformer P.C.B..

Step 2 : Remove 1 screw.

Step 3 : Remove the Transistor (Q5921).

Caution : Avoid touching the Heat Sink during replacement

due to its hight temperature as it may lead to injuries/shock.

SA-PMX3GN

8.14.1. Assembly of the Transistor (Q5921)

Step 1 : Mount the transistor (Q5921) onto the Transformer P.C.B..

Caution : Ensure all pins are seated properly.

Step 2 : Fix 1 screw to attach the transistor (Q5921) to the Heat

Sink.

8.15. Disassembly of Power P.C.B.

• Follow the (Step 1) - (Step 5) of Item 8.3

• Follow the (Step 1) - (Step 6) of Item 8.9

• Follow the (Step 1) - (Step 7) of Item 8.11

• Follow the (Step 1) - (Step 2) of Item 8.12

Step 3 : Solder the pins of the Transistor (Q5921) on the reverse side of the transformer P.C.B..

Caution : Before soldering, ensure all pins are properly seated and no ‘floating’ of pins.

Step 1 : Remove 3 screws on Power P.C.B..

Step 2 : Remove Power P.C.B..

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