Panasonic SAPMX-1-DBEB Service manual

ORDER NO. MD0606218CE

CD Stereo System

SA-PMX1DBEB

Colour

(S)... Silver Type

Specification

n Amplifier Section

RMS OUTPUT POWER both channel driven

simultaneously

10% Total harmonic distortion 80 W per channel (4 Ω)

Input Impedance

MUSIC PORT 250 mV 13 kΩ

Output Impedance

HEADPHONE 16 to 32 Ω

Phone jack

Terminal Stereo, 3.5 mm

Music port input jack

Terminal Stereo, 3.5 mm

DAB external antenna

Terminal F-connector (75 Ω)

n FM Tuner Section

Frequency range 87.50 to 108.00 MHz

(50 kHz step)

Sensitivity 2.5 µV (IHF)

S/N 26dB 1.4 µV

ntenna terminal(s) 75 Ω (unbalanced)

Preset station FM 15 stations

AM 15 stations

n AM Tuner Section

Frequency range 522 to 1629 kHz (9 kHz steps)

520 to 1630 kHz (10 kHz steps)

Sensitivity

S/N 20 dB (at 999 kHz) 1584 µV/m

n DAB Section

Frequency Band (Wavelength)

Band III (UK only) 11B to 12D (218.640 MHz to

229.072 MHz)

Band III (Europe) 5A to 13F (174.928 MHz to

239.200 MHz)

Intermediate frequency 1st : 38.912 MHz, 2nd : 2.048

MHz

Sensitivity *BER 4x10

MAX. Input Power 0dBm

Min Requirement -97 dBm

Selectivity

djacent Channel (Band III) 33 dB

Far-Off Channel (Band III) 45 dB

DAB memories 20 channels

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

Erase system AC erase 100 kHz

Tape speed 4.8 cm/s

Overall frequency response (+3, -6 dB) at DECK OUT

NORMAL 35 Hz to 14 kHz

S/N RATIO 47 dB (A weighted)

SA-PMX1DBEB

Wow and flutter 0.08% (WRMS)

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

cassette tape

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, -2 dB)

Wow and flutter Below measurable limit

Digital filter 8fs

D/A converter MASH (1 bit DAC)

n General

Power supply AC 230 to 240 V, 50 Hz

Power consumption 80 W

Dimensions (W x H x D) 174 mm x 242 mm x 318 mm

Mass 5.0 kg

Operating temperature range +5 to +35°C

Operating 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-PMX1DBEBS

Music center: SA-PMX1DBEBS

Speaker: SB-PMX1EG-M

0.8 W (approx.)

CONTENTS

Page Page

1 Safety Precautions 4

1.1. GENERAL GUIDELINES

1.2. Caution for AC Cord

1.3. Before Repair and Adjustment

1.4. Protection Circuitry

2 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices

3 Precaution of Laser Diode

4 Handling Precautions For Traverse Deck

5 Handling the Lead free Solder

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 Operation

8 Self-Diagnosis & 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 Top Cabinet

9.5. Disassembly of DAB Module Unit

9.6. Disassembly of Front Panel & Deck Mechanism

9.7. Disassembly of FL, Switch, Music Port & Headphone

P.C.B.

9.8. Disassembly of Rear Cabinet

9.9. Disassembly of Main P.C.B.

9.10. Disassembly of Inner Chassis

9.11. Disassembly of CD Mechanism

9.12. Disassembly of Transformer P.C.B.

9.13. Disassembly of Tuner Extent P.C.B.

9.14. Replacement of the Power IC

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

Gear (CD Mechanism Unit)

9.16. Disassembly of Optical Pickup (CD Mechanism Unit)

9.17. Disassembly of Traverse Gear A and Traverse Gear B

(CD Mechanism Unit)

9.18. Procedure for Replacing Pinch Roller and Head Block

(Deck Mechanism Unit)

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

Belt B, and Winding Belt (Deck Mechanism Unit)

9.20. Procedure for Replacing Parts on Deck Mechanism PCB

9.21. Disassembly of Loading Mechanism

10 Service Fixture & Tools

11 Service Positions

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

11.2. Checking and Repairing of DAB Module Unit

SA-PMX1DBEB

11.3. Checking and Repairing of Deck P.C.B. 49

11.4. Checking and Repairing of FL, Switch, Headphone and

Music Port P.C.B.

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

11.6. Checking and Repairing of CD Servo P.C.B.

12 Procedure for Checking Operation of Individual Parts of Deck

Mechanism Unit

12.1. Operation Check with Cassette Tape

12.2. Operation Check without Cassette Tape

13 Measurement And Adjustments

13.1. Cassette Deck Section

14 Voltage Measurement & Waveform Chart

14.1. Voltage Measurement

14.2. Waveform Chart

15 Wiring Connection Diagram

16 Block Diagram

17 Notes of Schematic Diagram

18 Schematic Diagram

18.1. OPTICAL PICKUP CIRCUIT

18.2. CD SERVO CIRCUIT

18.3. MAIN CIRCUIT

18.4. FL CIRCUIT

18.5. SWITCH CIRCUIT

18.6. DECK CIRCUIT

18.7. TRANSFORMER CIRCUIT

18.8. TUNER EXTENT CIRCUIT, DECK MECHANISM

CIRCUIT, MUSIC PORT CIRCUIT and HEADPHONE

CIRCUIT

19 Printed Circuit Board Diagrams

19.1. CD SERVO P.C.B

19.2. MAIN P.C.B

19.3. TUNER EXTENT P.C.B, FL P.C.B, SWITCH P.C.B,

MUSIC PORT P.C.B and HEADPHONE P.C.B

19.4. DECK P.C.B, DECK MECHANISM P.C.B and

TRANSFORMER P.C.B

20 Illustration of IC's, Transistors and Diodes

21 Terminal Function of IC's

21.1. IC800 (C2CBYY000266) IC MICROPROCESSOR

21.2. IC7001 (MN6627954MA) IC SERVO

PROCESSOR/DIGITAL SIGNAL PROCESSOR/DIGITAL

FILTER D/A CONVERTER

21.3. IC7002 (BA5948FPE2) IC 4CH Drive

22 Troubleshooting Flowchart (CD Section Circuit)

23 Exploded Views

23.1. Cabinet Parts Location

23.2. Deck Mechanism Parts Location (RAA4110-1S)

23.3. CD Loading Mechanism Parts Location

23.4. Packaging

24 Replacement Parts List

SA-PMX1DBEB

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 expose d metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the expose d 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.

1.2. Caution for AC Cord

SA-PMX1DBEB

1.3. Before Repair and Adjustment

Disconnect AC power, discharge Power Supply Capacitors C500, C501, C513, C625, C626, C633, C634, C950, C951, C955 and C961 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-240V, 50 Hz in NO SIGNAL mode (at volume minimum) should be ~250 mA.

1.4. 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 connec tion 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-PMX1DBEB

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 handlin g 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 removal 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 conduc tive 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 bodily 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-PMX1DBEB

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-PMX1DBEB

4 Handling Precautions For Traverse Deck

The laser diode in the traverse deck (optical pickup) may break down due to potent ial 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 4.1)

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

· Grounding for electrostatic breakdown prevention

1. Work table 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 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 4.1)

(Figs 4.2)

SA-PMX1DBEB

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%

6 Accessories

Note : Refer to Packing Materials & Accessories Parts List (Section 23) for the part number.

Remote Control

AC Power Cord

SA-PMX1DBEB

FM Antenna

AM Loop Antenna

ANT

Adapter

Wire

DAB Antenna

SA-PMX1DBEB

7 Operating Instructions Procedures

7.1. Main Unit & Remote Control Operation

7.2. Disc Operation

SA-PMX1DBEB

8 Self-Diagnosis & 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.

8.1. Special Mode Table

Below is the various special modes for checking:-

Item FL Display Key Operation

Mode Name Description Front Key

Doctor Mode To enter into Doctor

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.

FL Display Test To check the FL

segments display (All segments will light up)

· BASS TREBLE set to

0dB.

· H.BASS, PRESET

EQ and SURROUND is off.

Tuner Check To Inspect Tuner Check

(For more information, refer to section 8.1.3)

· Volume 50 is set.

· BASS TREBLE set to

0dB.

· PRESET EQ is off.

Volume Setting To Forced Volume

Setting.

· Volume 50 is set.

· BASS TREBLE set to

0dB.

· H.BASS, PRESET

EQ and SURROUND is off.

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

* ROM correction ** Firmware version No:

· All segment of the FL continues to be ON

In any mode:

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

To exit, press [ENTER] button on remote control or remote control.

In doctor mode:

1. Press [DIMMER] button on remote control.

Press [0] button on remote control to cancel current test mode. To exit, press [ENTER] button on remote control or remote control.

In doctor mode:

1. Press [TUNER] button on remote control.

To exit, press [ENTER] button on remote control or 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 [ENTER] button on remote control or remote control.

] button on main unit follow

button on main unit or

CD Reliability Test (Loading)

CD Reliability Test (Traverse)

To determine the reliability of CD Loading Unit. (For more information, refer to section 8.1.4)

To Inner and Outer Disc aging test. (For more information, refer to section 8.1.5)

The [NO DISC] display will appear after 3 sec.

In doctor Mode:

1. Press [

Press [0] button on remote control to cancel current test mode. To exit, press unit or remote control.

In doctor Mode:

1. Press [

Press [0] button on remote control to cancel current test mode. To exit, press unit or remote control.

], [1] button on remote control.

button on main

], [2] button on remote control.

button on main

SA-PMX1DBEB

Item FL Display Key Operation

Mode Name Description Front Key

CD Reliability Test (Combination)

To Inspect the combination of the OPEN/CLOSE operation and the Inner and Outer Disc Access operation aging test. (For more information, refer to section 8.1.6)

CD SelfAdjustment (AJST) Result Display

To display result of selfadjustment for CD. (For more information, refer to section 8.1.7)

· BASS TREBLE set to

0dB.

The [NO DISC] display will appear after 3 sec.

· H.BASS, PRESET

EQ and SURROUND is off.

TPS To check REV TPS for

deck. (For more information, refer to section 8.1.8)

· BASS TREBLE set to

0dB.

· H.BASS, PRESET

EQ and SURROUND is off.

Cold Start To activate cold start

ipon next AC power up.

· BASS TREBLE set to

0dB.

· H.BASS, PRESET

Note: This test do not work when selector is in

Tuner. EQ and SURROUND is off.

The [NO DISC] display will appear after 3 sec.

In doctor Mode:

1. Press [

], [3] button on remote control.

Press [0] button on remote control to cancel current test mode. To exit, press

button on main

unit or remote control.

In doctor mode:

1. Press [

], [4] button on remote control.

To exit, press [ENTER] button on remote control or

button on main unit or

remote control.

In doctor mode:

1. Press [

] button on remote

control.

Press [0] button on remote control to cancel current test mode. To exit, press [ENTER] button on remote control or

button on main unit or

remote control.

In doctor mode:

1. Press [SLEEP] button on remote control.

To exit, press [ENTER] button on remote control or

button on main unit or

remote control.

MP3 Test To Inspect MP3 disc

check.

· BASS TREBLE set to

0dB.

· H.BASS, PRESET

EQ and SURROUND is off.

(For more information, refer to section 8.1.9)

CD to TAPE Recording Test Mode

To Inspect the recording process from CD to TAPE for the unit.

· Volume 50.

· BASS TREBLE set to

0dB.

· H.BASS, PRESET

EQ and SURROUND is off.

(For more information, refer to section 8.1.10)

In doctor mode:

1. Press [PROGRAM] button on remote control.

To exit, press [ENTER] button on remote control or

button on main unit or

remote control.

In doctor mode:

1. Press [4] button on remote control.

2. Press [5] button on remote control

To exit, press [ENTER] button on remote control or

button on main unit or

remote control.

Item FL Display Key Operation

Mode Name Description Front Key

CD and Deck Eject Test Mode

To Inspect the CD and Deck Eject.

· BASS TREBLE set to

0dB.

· H.BASS, PRESET

EQ and SURROUND is off.

In doctor mode:

1. Press [6] button on remote control.

To exit, press [ENTER] button on remote control or remote control.

SA-PMX1DBEB

button on main unit or

Self -Diagnostic Mode

To enter into self diagnostic checking for main unit.

1. Press and hold [ ]button for 2 seconds follow by [H.BASS].

To exit, press unit or remote control.

8.1.1. Cassette Mechanism Self-Diagnostic Mode

Below is information on the checking of cassette deck mechanism

No. Operation Procedures Micon operation & processing

1 C-mecha Abnormal Detection shall be

executed for DECK.

2 [ ] key is pressed, after loading in a

NORMAL type cassette with the recording tab on the left side removed.

3 [ ] key is pressed, after loading a

NORMAL, CrO2, METAL type cassette with the recording tab on the right side removed.

4 [TAPE ] Key is pressed, after loading in a

NORMAL, CrO2, METAL type cassette ( cassette for TPS checking purposes and with both recording tabs intact ).

5 [REC] key is pressed, after loading in a

NORMAL type cassette ( with both recording tabs intact )

6 Self-diagnostic mode is stopped by pressing

the [n] Key.

7 To clear all the abnormalities in the memory,

press the [n] Key for more than 5 Sec while the self-diagnostic mode is stopped.

8 To cancel the self-diagnostic mode press the

[POWER] Key.

Check that all DECK mechanism leaf SW is in OFF state.

FF shall be executed for 2 sec, after which STOP. Check the following. { F.REC INH SW } is OFF { R.REC INH SW } is ON { HALF SW } is ON Reel pulse toggles between H & L.

REW shall be executed for 2 sec, after which STOP. Check the following. { F.REC INH SW } is ON { R.REC INH SW } is OFF { HALF SW } is ON Reel pulse toggles between H & L.

TPS operation is executed. Check the following. { F.REC INH SW } is ON { R.REC INH SW } is ON { HALF SW } is ON TPS signal changes. After checking TPS, it shall STOP. If TPS checking is completed at TAPE END, it is considered as TPS abnormal.

REC operation shall not be executed. Check the following. { F.REC INH SW } is ON { R.REC INH SW } is ON { HALF SW } is ON

LCD shall display the abnormality item code, when the STOP key is pressed, it shall display the abnormality item code in the following sequence. [ T EST H 0 1 ] [ TEST H 0 2 ] [ TEST H 0 3 ]

At this time, all the abnormalities item in the memory is cleared and is displayed on the LCD.[ C L E A R ] display for 1 Sec. then,[ TEST ] is displayed.

POWER is OFF.At the next POWER ON, normal operation shall be executed.

button on main

· If RAM check error occurs during microcomputer reset, COLDSTART shall be executed and all the error memory shall be

cleared during RAM initialization.

8.1.2. EEPROM Checksum (ROM correction)

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

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 & EEPRO M checksum.

· W hen entering into DOCTOR MODE the firmware version & checksum of EEPROM (if applicable) 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:

SA-PMX1DBEB

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

3. When EEPROM IC is detected and has ROM correction but NG:

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)

8.1.3. Tuner Check

Purpose : Tuner inspection mode.

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 : Press [TUNER] button on remote control.

· The system is switched to tuner inspection mode.

· The receiving frequency is set to [87.50Mhz] (FMfmin) this time.

Step 3 : When [PLAY MODE] key is pressed, Auto Scan shall start from Fmin in the direction of downward.

· Auto Scan shall be continued until auto stop is made by pressing [0] key.

· Auto Scan shall stop when auto stop is made. When [0] key is pressed again in this state ( auto stop state ).

· Auto scan shall also be available for AM. It is also in the diretion of downward.

1. [1] key is pressed..........FM 87.50MHz (Fmin) is received.

2. [2] key is pressed..........FM 108.00MHz (Fmax) is received.

3. [3] key is pressed..........FM 98.10MHz (Frequency set by Signal Generator) is received.

4. [4] key is pressed..........FM 90.10MHz.

5. [5] key is pressed..........FM 106.10MHz.

6. [6] key is pressed..........AM 522kHz (Fmin) is received.

7. [7] key is pressed..........AM 1629kHz (Fmax)is received.

8. [8] key is pressed..........AM 999kHz is received.

9. [9] key is pressed..........AM 603kHz is received.

8.1.4. CD Reliability Test (Loading)

Purpose : CD Loading OPEN/CLOSE aging test. (Mainly used for CR130 unit reliability test).

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 : Switch to CD mode and when the key [11] are being pressed using the remote control key, the following operation shall be carried out :

Step 3 : The FL shall display as below :

SA-PMX1DBEB

Step 4 : Due to certain reasons, when the following condition happens, the aging will stop but the count value shall be maintained :

1. During OPEN operation, after certain timing, the CD does not in OPEN position. (After REST SW is OFF, the CD OPEN SW did not ON after 4s.)

· Do the CLOSE operation; stop the aging test at CLOSE condition.

2. During CLOSE operation, after certain timing, the CD does not in CLOSE position. (After CLOSE operation, REST SW was not off in 4s.)

· Do the OPEN operation; stop the aging test at OPEN condition.

Note : When key [0] is pressed, the current test shall be cancelled and returns to Doctor mode display. The count value shall be reset to (00000).

During this test, FL shall display as normal and no

display on the FL.

8.1.5. CD Reliability Test (Traverse)

Purpose : CD Access Inner and Outer Disc aging test. (Mainly used for CR130 unit reliability test).

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 : Switch to CD mode and when the key [12] are being pressed using the remote control, the following operation shall carried out :

SA-PMX1DBEB

Step 3 : Due to certain reasons, when the following condition happens, the aging will stop but the count value shall be maintained :

· After 10s, the Disc Access not yet completes.

· Out of Focus for more than 2s.

Note : When key [0] is pressed, the current test shall be cancelled and returns to Doctor mode display. The count value shall be reset to (00000).

During this test, FL shall display as normal and no

display on the FL.

8.1.6. CD Reliability Test (Combination)

Purpose : This test is the combination of the OPEN/CLOSE operation and the Inner and Outer Disc Access operation aging test. (Mainly used for CR130 unit reliability test).

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 : Switch to CD mode and when the key [13] are being pressed using the remote control, the following operation shall carried out :

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Step 3 : Due to certain reasons, when the following condition happens, the aging will stop but the count value shall be maintained :

· During OPEN operation, after certain timing, the CD does not in OPEN position.(After REST SW is OFF, the CD OPEN SW did not ON after 4s.)

· During CLOSE operation, after certain timing, the CD does not in CLOSE position.(After CLOSE operation, REST SW was not off in 4s.)

· After 10s, the Disc Access not yet completes

· Out of Focus for more than 2s

Note : When key [0] is pressed, the current test shall be cancelled and returns to Doctor mode display. The count value shall be reset to (00000).

During this test, FL shall display as normal and no

display on the FL.

8.1.7. CD Self-Adjustment (AJST) Result Display

Purpose : To display result of self-adjustment for CD.

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 : When [14] key are pressed at the doctor mode, the following shall be displayed for 3 secs. The result shall correspond to the condition met as shown in the table below :

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8.1.8. TPS Inspection

Purpose : Tape for TPS is put into Deck. TPS inspection starts with one key operation. This mode shall run a test program to check REV TPS for the Deck and ends by displaying the result and ejecting the Deck.

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 : Press [

· Software will start checking for existence of cassette in Deck.

· If the Deck does not contain any cassette, it shall end the test and displays [EEROR].

· If the cassette is detected, test shall start by playing the DECK in reverse direction for 1 sec and perform REV TPS.

· If TPS signal is OK, the Deck shall be ejected. Below is information on the TPS under 3 examples.

] button on remote control. Enter into TPS Test mode. (During this mode)

1. If ERROR Flag is set "ERROR" shall be displayed. TPS check result shall not be shown in this case.

2. If Deck TPS check = OK

3. If Deck TPS check = NG

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8.1.9. MP3 Test

Purpose : To check the MP3 Test.

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

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Result display :

· Displaye d if MP3 test OK

· Displaye d if MP3 test NG

8.1.10. CD Recording

Purpose : This test is designed for CD to TAPE recording inspection.

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 : Press [4] button on remote control. It shall enter CD to TAPE Recording Test.

Step 3 : Set shall be set to following condition automatically.

· VOLUME 50.

· BASS / TREBLE FLAT (0dB).

· Preset EQ OFF.

· H.BASS and surround off.

Step 4 : Either set in CD or TAPE mode, CD shall PLAY and TAPE REC for 3 seconds.

Step 5 : After 5 seconds, TAPE REC shall be stop and TAPE REW to starting point (count 0).During TAPE REW, CD drawer shall open

Step 6 : Press [5] button on remote control. To start TAPE PLAYBACK to check the recorded signal. When key [5] pressed, TAPE PLAY shall start for 3 seconds to playba ck the recorded signal. Tape shall be ejected after TAPE PLAY stop.

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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

H01 MODE SW abnormal For deck mechanism unit.

H02 REC INH SW

abnormal

H03 HALF SW abnormal For deck mechanism unit.

Press [ error.

For deck mechanism unit. Press [ error.

Press [ error.

] on main unit for next

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Error Code Diagnosis Contents Description of error Automatic FL Display Remarks

F01

Reel pulse abnormal

For deck mechanism unit. Press [

] on main unit for next

error.

F02

TPS abnormal

F15 CD REST SW

Abnormal

F26 Communication

between CD servo LSI and micro-p abnormal.

POWER AMP output 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.

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

For CD unit (For Traverse). Press [

] on main unit for next

error.

For CD unit (For Traverse). Press [

] on main unit for next

error.

For Power Supply Related Error Detection. Press [

] on main unit for next

error.

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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 Top Cabinet

· Disasse mbly of DAB Module Unit

· Disasse mbly of Front Panel & Deck Mechanism

· Disasse mbly of FL, Switch, Music Port & Headphone P.C.B.

· Disasse mbly of Rear Cabinet

· Disasse mbly of Main P.C.B.

· Disasse mbly of Inner Chassis

· Disasse mbly of CD Mechanism

· Disasse mbly of Transformer P.C.B.

· Disasse mbly of Tuner Extent P.C.B.

· Replacement of the Power IC

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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.

9.3. Main Parts Location Diagram

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9.4. Disassembly of Top Cabinet

Step 1 : Remove 2 screws from Top Cabinet Left side.

Step 2 : Remove 2 screws from Top Cabinet Right side.

Step 3 : Remove 4 screws from Top Cabinet Rear side.

Step 4 : Remove Top Cabinet as arrow shown. (Be careful of the catch).

9.5. Disassembly of DAB Module Unit

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

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