Panasonic SA-MAX750LMK, BRS11C, SB-MAX750, SA-MAX750, SB-MAX750P Service Manual

MEX1310012CE

CD Stereo System

Model No. SA-MAX750LMK

Product Color: (K)...Black Type

TABLE OF CONTENTS

1 Safety Precautions

1.1. General Guidelines

1.2. Before Repair and Adjustment

1.3. Protection Circuitry

1.4. Caution For Fuse Replacement

1.5. Safety Parts Information

2 Warning

2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices

2.2. Precaution of Laser Diode

2.3. Service caution based on Legal restrictions

2.4. Handling Precautions for Traverse Ass’y

2.5. Grounding for electrostatic breakdown prevention

3 Service Navigation

3.1. Service Information

3.2. Firmware Update Procedure

4 Specifications 5 General/Introduction

5.1. Media Information

6 Location of Controls and Components

6.1. Remote Control Key Button Operation

6.2. Main Unit Key Button Operation

7 Service Mode

7.1. Cold-Start

7.2. Doctor Mode Table

7.3. Reliability Test Mo

de (CD Mechanism Unit)

7.4. Self-Diagnostic Mode

7.5. Self-Diagnostic Error Code Table

7.6. Sales Demonstration Lock Function

8 Troubleshooting Guide 9 Disassembly and Assembly Instructions

Please refer to the original service manual for:

 CD Mechanism Unit, Mechanism (BRS11C) Order No. PSG1201019AE  Speaker system SB-MAX750PHK, Order No. MEX1310013AE

Nota: El idioma original de este Manual de Servicio es en idioma inglés, sin embargo algunas notas aquí mencionadas serán escritas en español para mejor descripción para Centros de Servicio de México.

9.1. Screw Types

9.2. Disassembly Flow Chart

9.3. Main Components and P.C.B. Locations

9.4. Disassembly of Top Cabinet

9.5. Disassembly of Front Panel Unit

9.6. Disassembly of FL Display P.C.B.

9.7. Disassembly of Bluetooth P.C.B.

9.8. Disassembly of Illumination Button P.C.B.

9.9. Disassembly of Control P.C.B.

9.10. Disassembly of Control Jog LED P.C.B.

9.11. Disassembly of Volume P.C.B.

9.12. Disassembly of Volume Jog LED P.C.B.

9.13. Disassembly of Remote Sensor P.C.B.

9.14. Disassembly of USB P.C.B.

9.15. Disassembly of Mic P.C.B.

9.16. Disassembly of LED P.C.B.

9.17. Disassembly of CD Lid

9.18. Disassembly of Rear Panel

9.19. Disassembly of CD Mechanism Unit

9.20. Disassembly of Main P.C.B.

9.21. Disassembly of SMPS P.C.B.

9.22. Disassembly of Tuner P.C.B.

9.23. Disassembly of CD Interface P.C.B.

0 Service Position

10.1. Checking of FL Display P.C.B., Control P.C.B., Volume P.C.B., Mic P.C.B. and USB P.C.B.

10.2. Checking of Main P.C.B. (Side B)

10.3. Checking of Main P.C.B. (Side A)

10.4. Checking of SMPS P.C.B.

11 Block Diagram

11.1. Servo & System Control

11.2. Audio

11.3. Power Supply

12 Wiring Connection Diagram 13 Schematic Diagram

13.1. Schematic Diagram Notes -

13.2. Main (CD Servo/Micon/Damp) Circuit

13.3. Bluetooth Circuit

13.4. Tuner Circuit

13.5. FL Display Circuit

13.6. Volume Circuit

13.7. Control & USB Circuit

13.8. Mic Circuit

13.9. Remote Sensor, LED & Illumination Button Circuit

13.10. SMPS Circuit

13.11. Control Jog LED, Volume Jog LED & CD Interface Circuit

14 Printed Circuit Board

14.1. Main P.C.B.

14.2. Bluetooth & Tuner P.C.B.

14.3. FL Display & Volume P.C.B.

14.4. Control,

Mic, USB, Remote Sensor, LED &

Illumination Button P.C.B.

14.5. SMPS P.C.B.

14.6. Control Jog LED, Volume Jog LED & CD Interface P.C.B.

15 Appendix Information of Schematic Diagram

15.1. Voltage & Waveform Chart

16 Exploded View and Replacement Parts List

16.1. Exploded View and Mechanical Replacement Part List

16.2. Electrical Replacement Part List

1 Safety Precautions

1.1. General Guidelines

1. IMPORTANT SAFETY NOTICE There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic Diagrams, Circuit Board Layout, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced with manufacturer’s specified parts to prevent X-RADIATION, shock, fire, or other hazards. Do not modify the original design without permission of manufacturer.

2. An Isolation T ransformer should always be used during the servicing of AC Adaptor whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks. It will also protect AC Adaptor from being damaged by accidental shorting that may occur during servicing.

3. 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.

4. After servicing, see to it that all the prote ctive devices such as insulation barriers, insulation papers shields are properly installed.

5. After servicing, make the fo llowing leakage current checks to prevent the customer 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. Measure the resistance value, with an ohmmeter, between th e jumpered AC plug and each exposed metallic cabi net part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to th e chassis, the reading should be between 1M: and 5.2M:.

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 1.5k:, 10 watts resistor, in parallel with a 0.15PF capacitors, between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure 1-1.

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. In case a measurement is outside of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer.

Figure 1-1

1.2. Before Repair and Adjustment

Disconnect AC power to discharge the AC Capacitors (C1004, C1005, C1006, C1007, C1013, C1014, C1308, C1752) through a 10 :, 10 W resistor to ground.

Caution:

DO NOT SHORT-CIRCUIT DIR ECTLY (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 127 V, 60 Hz in FM Tuner at volume minimum should be ~ 850mA.

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

1.5. Safety Parts Information

Safety Parts List:

There are special components used in this equipment which are important for safety.

These parts are marked by in the Schematic Diagrams, Exploded View & Replacement 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.

! !

D0GF105JA048

ADAPTADOR TOMA CORRIENTE K2DAYYY00002

RQTM0200

RKM0702Z-K

FIXED INDUCTORS G0C400K00001

RESISTOR

VARISTOR D4EAY511A127

CAPACITOR DE AC F0CAF104A105

INSTRUCTIVO

RGR0439L-B1

RD-DDL107-PX

K5G502Y00006

FUSES, LEADED TYPE (CAP

TERMINAL TYPE EXCLUDED )

F1BAF471A013

PCB SMPS

B3PBA0000579

RJB3716A-1

GAB. MET. SIN DOBLAR

REAR PANEL

CAPACITOR DE AC CERAMICO F1BAF221A013

OPTOACOPLADOR

CABLE TOMACORRIENTE.

CONECTOR TOMACORRIENTE

Nombre del componente

K2CR2YY00055

G4DYZ0000076

K5D103BNA005

Numero de Parte

TRANSFORMADOR DE PODER

TRANSFORMADOR DE

RESPALDO

BRS1.1C (CD UNIT)

FUSIBLE PRIMARIO

CAPACITOR DE AC

CAPACITOR DE AC CERAMICO

F0CAF224A105

K2AZYA000005

G4DYA0000520

FUSES, LEADED TYPE (CAP

TERMINAL TYPE EXCLUDED )

K5G501YA0081

GAB. MET. DOBLADO RXRM0003

! !

Safety

2 Warning

2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi-

tive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices.

The following techniques should be used to help reduce the incidence of component damag e caused by electrostatic discharge (ESD).

1. Immediately before handling any semiconductor component or semiconductor-equipped 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 equippe d with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup 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 sufficient 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, aluminum 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 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).

2.2. 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: 790 nm (CD) Maximum output radiation power from pickup: 100 W/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.

2.3. Service caution based on Legal restrictions

2.3.1. 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 (86qF) more than that of the normal solder.

Definition of PCB Lead Free Solder being used

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 fre e 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 cleanl y for soldering of the new IC.

• Since the melting point of the lead free solder is higher than that of the no rmal lead solder, it takes the longer time to melt the lead free solder.

• Use the soldering iron (more than 70 W) equipped wi th the temp erature contro l after setting the temp erature at 350±30 degrees C (662±86qF).

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%

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

(See right figure)

2.4. Handling Precautions for Traverse Ass’y

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.

2.4.1. Cautions to Be Taken in Handling the Optical Pickup Unit (OPU)

The laser diode in the optical pickup unit may be d amaged due to electrostatic discharge g enerating 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 flexibl e 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.

Figure 2-2

2.5. Grounding for electrostatic breakdown prevention

• As for parts that use optical pick-up (laser diode), the optical pick-up is destroyed by the static electricity of the working environment. Repair in the working environment that is grounded.

2.5.1. Worktable grounding

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

2.5.2. Human body grounding

• Use the anti-static wrist strap to discharge the static electricity form your body Figure 2-3.

Figure 2-3

3 Service Navigation

3.1. Service Information

This service manual contains technical information which will allow service personnel’s to understand and service this model. Please place orders using the parts list and not the drawing reference numbers.

If the circuit is changed or modified, this information will b e followe d by supplemen t service ma nual to be filed with original service manual.

3.2. Firmware Update Procedure

Figure 3-1

4 Specifications

Potencia total PMPO 31350 W

Sección del sintonizador, terminales

Memoria preconfigurada 30 emisoras de FM

15 emisoras de AM

Frecuencia modulada (FM)

Gama de frecuencias

87,5 MHz a 108,0 MHz (en pasos de 100 kHz) 87,9 MHz a 107,9 MHz (en pasos de 200 kHz)

Terminales de la antena 75 (desbalanceado)

Amplitud modulada (AM)

Gama de frecuencias

520 kHz a 1710 kHz (en pasos de 10 kHz)

Conector del micrófono

k1.1,Vm7,0dadilibisneS 

Terminal Mono, toma de 3,5 mm (1 sistema)

Puerto de música (frontal)

Sensibilidad 100 mV, 4,7 k Terminal Estéreo, toma de 3,5 mm

Entrada AUX Clavija jack

Sección de discos compactos

Discos reproducidos (8 cm o 12 cm)

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

Lector

)DC(mn097adnoeddutignoL

Salida de audio (disco)

Número de canales 2.2 canales (FL, FR, SW) FL = Canal frontal izquierdo FR = Canal frontal derecho SW = Canal de subwoofer

MPEG-1 Layer 3

Sección de memoria interna

Memoria

Tamaño de la memoria 4 GB Compatibilidad con formato de archivos de medios

MP3 (*.mp3)

Grabación en memoria interna

Velocidad de bits 128 kbps Velocidad de grabación en la memoria

1x, 3x máx. (CD solamente) Formato de archivo de grabación MP3 (*.mp3) Capacidad de total de canciones grabadas

(usa 128 kbps, aproximadamente 1 canción = 4 minutos)

1000 canciones

Sección de USB

Puerto USB

USB estándar USB 2.0 velocidad total Compatibilidad con formato de archivos de medios

MP3 (*.mp3)

Sistema de archivo de dispositivo USB

FAT12 , FAT1 6, FAT 32 Energía puerto USB 500 mA (máx.) Velocidad de bits

16 kbps a 320 kbps (reproducción)

Grabación en USB

spbk821stibeddadicoleV

Velocidad de grabación USB

1x, 3x máx. (CD solamente)

Formato de archivo de grabación MP3 (*.mp3)

Sección de Bluetooth

Especificación del sistema de Bluetooth

V3,0

Clasificación del equipo inalámbrico Clase 2

Perfiles admitidos A2DP, AVRCP, GAVDP

Banda de frecuencia 2402 MHz a 2480 MHz

(Salto de frecuencia adaptativa)

Distancia de conducción 10 m de la línea de visión

Sección de bafles

Tipo Sistemade4bocinasde4vías

(reflejo de sonidos graves)

Bocina(s)

Súper Woofer (Bajo) Tipo cónico de 38 cm Súper Woofer (Medio bajo) Tipo cónico de 20 cm Bocina para graves Tipo cónico de 10 cm Bocina para agudos Tipo cónico de 6 cm

Impedancia

Alto 3



/ Medio bajo 3



/ Bajo 6



Presión acústica de salida 93 dB/W (1 m)

Gama de frecuencias 38 Hz a 23 kHz (–16 dB)

44 Hz a 18 kHz (–10 dB)

Dimensiones (An x Al x Prf)

558 mm x 796 mm x 525 mm

Peso 34,2 kg

Generalidades

Fuente de alimentación

127V,60Hz

Consumo de energía 220 W

Dimensiones (An x Al x Prf)

485 mm x 231 mm x 378 mm

Peso 5,3 kg

Gama de temperaturas de funcionamiento

0°C a +40°C

Gama de humedades de funcionamiento

35% a 80% humedad relativa (sin condensación)

Nota:

 Las especificaciones están sujetas a cambios sin

previo aviso. El peso y las dimensiones son aproximados.

 La distorsión armónica total se mide con el analizador

de espectro digital.

Sección del amplificador

Potencia de salida RMS en modo estéreo

Alto 350 W por canal (3 ), 1 kHz, 30% THD Medio bajo 350 W por canal (3 ), 1 kHz, 30% THD Bajo 725 W por canal (6 ), 100 Hz, 30% THD Potencia total del modo estéreo RMS

2850 W (30% THD)

Consumo en el modo normal

Consumo en el modo de espera

220Wh/día (considerando 1 hora de uso al día).

6,9Wh/día (considerando 23 horas en modo de espera al día).

5 General/Introduction

5.1. Media Information

6 Location of Controls and Components

6.1. Remote Control Key Button Operation

6.2. Main Unit Key Button Operation

7 Service Mode

7.1. Cold-Start

Here is the procedure to carry out cold-start or initialize to shipping mode.

1. Unplug AC power cord

2. Press & hold [POWER] button

3. Plug AC power cord while [POWER] button being pressed FL Display will show “_ _ _ _ _ _ _ _”

4. Release [POWER] button

7.1.1. Service Mode Table

7.2. Doctor Mode Table

7.2.1. Doctor Mode Table 1

FL Display

Key Operation

Front Key

Item

DescriptionMode Name

Doctor Mode

EEPROM checksum check

To enter into Doctor Mode In CD Mode:

1. Press [ ] button on main unit follow by [4] and [7] on remote control.

In CD mode:

1. Enter into Doctor Mode

2. To exit, press [DELETE] button on remote control or, press [POWER, /I] button on Main Unit

Displaying of

1. Year Develop.

2. Model Type.

3. ROM Type.

4. Firmware Version.

(Display 1)

Version No. (001 ~ 999) specific for each firmware

(Decimal)1 2 3 4

7.2.2. Doctor Mode Table 2

FL Display

Key Operation

Front Key

Item

DescriptionMode Name

Volume Setting Check

FL Display Check

To check the volume setting of the unit.

To check the FL segment display. All segments will light up while all LED blink at 0.5s intervals.

In Doctor Mode:

1. Press [7], [8], & [9] button on the remote control.

In Doctor mode:

1. Press [1] button on the remote control.

2. To cancel this mode, press [0] button on the remote control.

Press [7]: VOL50 Press [8]: VOL35 Press [9]: VOL0

Volume

In this mode, the tray will open & close automatically.

Cancellation Display

CD Loading Test To determine the open & close

operation of the CD Mechanism Unit.

Note: Refer to Section 7.3 for process flow.

The counter will increment by one. When reach 99999999 will change to 00000000

Cancellation Display

Traverse Test To determine the traverse unit

operation for inner & outer track access.

The counter will increment by one. When reach 99999999 will change to 00000000

Cancellation Display

Reliability Test (Combination of Traverse & CD Loading Test)

In this mode,ensure the CD is in the unit.

Note:

To determine the traverse unit operation & open/close operation of the mechanism.

In this mode,ensure the CD is in the main unit.

In Doctor Mode:

1. Press [10] [2] [1] button on the remote control.

In Doctor Mode:

2. To cancel this mode, press [0] button on the remote control.

1. Press [10] [1] [2] button on the remote control.

In Doctor Mode:

1. Press [10] [1] [5] button on the remote control.

2. To cancel this mode, press [0] button on the remote control.

7.2.3. Doctor Mode Table 3

FL Display

Key Operation

Front Key

Item

DescriptionMode Name

Self- Adjustment

Test

To display result of self-adjustment for CD operation.

CD LSI Version Check

To check the CD LSI Version and its checksum.

In Doctor Mode

1. Press [10] [1] [4] button on the remote control.

In Doctor Mode:

1. Press [4] button on the remote control.

Display of auto adjustment result

Reference table:

ERROR Code Status Condition

0 1 2 4 6 8 A C E F

AOC1/AOC2 O O O O O O O O -

ABC2/ABC1 O - X O X O X O X -

AOC1 O - O X X O O X X -

FAGC/TAGC O - O O O X X X X -

AGC2 O - O O O O O O O

O : OK; X : NG (In case that time out happens.) : Either one of FO AOC, TR AOC and FO coarse AGC is NG. : If the AGC is NG (ignore others).

To cancel this mode, press [0] button on the remote control.

(Display 2)

(Display 1)

Version (Decimal)

ROM Type

Year Develop

after 2 sec

Checksum (Hex)

Bluetooth

Version Check

Bluetooth module will need some time to power up and read the version display. Meanwhile [_BT_ll----_] will show before the ver. numbers appear. 2s display count should start after flash version number appear.

Bluetooth Check 1. Bluetooth device will start

pairing.

2. Once connected it wll autoplay for 5 sec and auto disconect.

( 2 sec)

1. Go to Bluetooth selector and enter Doctor Mode.

2. Press USB[O/II] on remote control.

3. Device will display SC-MAX250-X, SC-MAX150-X. (X = region number)

( 2 sec)

v = flash version (0~7), w = flash sub version (0~F), x = control version (0~F), yyy = EEPROM version (0~255), zz = EEPROM sub version (0~99),

2. Press [10] [2] [4] and display will show.

7.3. Reliability Test Mode (CD Mechanism Unit)

Below is the process flow chart of the aging test for the CD Mechanism Unit .

Fig. 7-1. Reliability Test (Loading)

Fig. 7-2. Reliability Test (Traverse)

Fig. 7-3. Reliability Test (Combination)

OPEN Operation

OPEN wait for 1 s

CLOSE Operation

CLOSE wait for 4 s

Count up

First Track

Access

First Track

Play 5 s

Last Track

Access

Last Track

Play 5 s

Count up

First Track

Access

Play 10 s

Open

Operation

Open wait

for 1 s

Operation

Count up

First Track

Last Track

Play 10 s

7.4. Self-Diagnostic Mode

7.5. Self-Diagnostic Error Code Table

Self-Diagnostic Function (Refer Section 7.4. Self-Diagnostic Mode) provides information on any problems occurring for the unit and its respective components by displaying the error codes. These 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.

7.5.1. Power Supply Error Code Table

FL Display

Key Operation

Front Key

Item

Description

Mode Name

To enter into self diagnostic checking

System will perform a check on any unusual/error code from the memory

To clear the stored in memory (EEPROM IC)

Self Diagnostic Mode

Error code information

Delete error code

Step 1: Select CD mode

(Ensure no disc is inserted).

Step 2: Press & hold [ ] button

follow by [ ] on main unit for 2 seconds.

Step 1: In self diagnostic mode,

Press [ ] on main unit.

To unit or remote control.

Step 1: In self diagnostic mode,

Press [0] on remote control.

To unit or remote control.

Example:

Cold Start To active cold start upon next AC

power up when reset start is execute the next time.

In self diagnostic mode:

1. Press [3] button on the remote control.

exit, press [ /I] on main

7.5.2. CD Mechanism Error Code Table (CD Mechanism Unit)

7.6. Sales Demonstration Lock Function

7.6.1. Entering into Sales demonstration lock mode

Here is the procedures to enter into the Sales demonstration lock mode. Step 1: Turn on the unit. Step 2: Select to any mode function. Step 3: Press and hold [

OPEN/CLOSE] and [CD] keys for 5 sec or more.

The display will show upon entering into this mode for 2 sec.

Note: [

OPEN/CLOSE] button is invalid and the main unit displays “LOCKED” while the lock function mode is entered.

7.6.2. Cancellation of Sales demonstration lock mode

Step 1: Turn on the unit. Step 2: Select to any mode function. Step 3: Set volume to Vol 19. Step 4: Press and hold [

OPEN/CLOSE] and [CD] keys for 5 sec or more.

The display will show upon entering into this mode for 2 sec.

Error Code Diagnostic Contents Description of error Automatic FL Display Remarks

CD H15 CD Open Abnormal During operation

POS_SW_R On fail to be detected with 4 sec. Error No. shall be clear by force or during cold start.

Press [

] on main unit for

next error.

CD H16 CD Closing Abnormal During operation

POS_SW_CEN On fail to be detected with 4 sec. Error No. shall be clear by force or during cold start.

Press [

] on main unit for

next error.

F26 Communication between

CD servo LSI and micro-p abnormal.

During switch to CD function, if SENSE = “L” within failsafe time of 20ms.

Press [

] on main unit for

next error.

8 Troubleshooting Guide

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9 Disassembly and Assembly Instructions

Caution Note:

• This section describes the disassembly and/or assembl y procedures for all ma jor printed circuit boards & main components for the unit. (You may refer to the sectio n of “Main components and P.C.B Locations” as described in the service manual)

• Before carrying out the disassembly process, please ensure all the safety precautions & procedures are followed.

• During the disassembly and/or assembly proc ess, please handle with care as there may be chassis components with sharp edges.

• Avoid touching heatsinks due to its high temperature after prolong use. (See caution as described below)

• During disassembly and assembly, please ensure proper service tools, equipments or jigs is being used.

• During replacement of component parts, please refer to the section of “Replacement Parts List” as described in the service manual.

• Select items from the following indexes when disassembly or replacement are required.

• Disassembly of Top Cabinet

• Disassembly of Front Panel Unit

• Disassembly of FL Display P . C.B.

• Disassembly of Bluetooth P.C.B.

• Disassembly of Illumination Button P.C.B.

• Disassembly of Control P.C.B.

• Disassembly of Control Jog LED P.C.B.

• Disassembly of Volume P.C.B.

• Disassembly of Volume Jog LED P .C.B.

• Disassembly of Remote Sensor P.C.B.

• Disassembly of USB P.C.B.

• Disassembly of Mic P.C.B.

• Disassembly of LED P.C.B.

• Disassembly of CD Lid

• Disassembly of Rear Panel

• Disassembly of CD Mechanism Unit

• Disassembly of Main P.C.B.

• Disassembly of SMPS P.C.B.

• Disassembly of Tuner P.C.B.

• Disassembly of CD Interface P.C.B.

9.1. Screw Types

9.2. Disassembly Flow Chart

9.4. Top Cabinet

9.5. Front Panel Unit

9.6. FL Display P.C.B.

9.9. Control P.C.B.

9.10. Control Jog LED P.C.B.

9.8. Illumination Button P.C.B.

9.12. Volume Jog LED P.C.B.

9.13. Remote Sensor

P.C.B.

9.11. Volume P.C.B.

9.14. USB P.C.B.

9.15. Mic P.C.B.

9.16. LED P.C.B.

9.17. CD Lid

9.19. CD Mechanism Unit

P.C.B.

9.20. Main P.C.B.

9.21. SMPS P.C.B.

9.22. Tuner P.C.B.

9.18. Rear Panel

9.23. CD Interface

9.7. Bluetooth P.C.B.

9.3. Main Components and P.C.B. Locations

9.4. Disassembly of Top Cabinet

Step 1 Remove 3 screws.

Step 2 Remove 3 screws.

Step 3 Remove 5 screws. Step 4 Slightly release both sides of the Top Cabinet as arrow

shown.

Step 5 Slightly lift up the Top Cabinet. Step 6 Remove the Top Cabinet.

Caution: During assembling, ensure that the Top Cabinet is located & inserted into the Front Panel Unit as shown.

9.5. Disassembly of Front Panel Unit

• Refer to “Disassembly of Top Cabinet”.

Step 1 Remove 1 screw. Step 2 Remove the Wire Clamper. Step 3 Detach 10P FFC at the connector (CN2002) on Main

P.C.B.. Step 4 Detach 11P Cable at the co nnector (CN2001) on Main P.C.B.. Step 5 Detach 30P FFC at the connector (CN2004) on Main P.C.B.. Step 6 Detach 10P FFC at the connector (FP3002) on Main P.C.B.. Step 7 Detach 5P Wire at the connector (FP3001) on Main P.C.B..

Step 8 Remove 1 screw.

Step 9 Release tabs at the bottom of the unit.

Step 10 Detach to remove the Front Panel Unit

9.6. Disassembly of FL Display P.C.B.

• Refer to “Disassembly of Top Cabinet”.

• Refer to “Disassembly of Front Panel Unit”.

Step 1 Remove 6 screws. Step 2 Release catches. Step 3 Lift up the FL Display P.C.B..

Step 4 Detach 30P FFC at the connector (CN6002) on FL Dis-

play P.C.B..

Step 5 Remove the FL Display P.C.B..

Caution: During assembling, ensure that the FL Display P.C.B. is properly located and fully catched onto the Front Panel Unit.

9.7. Disassembly of Bluetooth P.C.B.

• Refer to “Disassembly of Top Cabinet”.

• Refer to “Disassembly of Front Panel Unit”.

• Refer to “Disassembly of FL Display P.C.B.”.

Step 1 Remove 4 screws.

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Panasonic SA-MAX750LMK, BRS11C, SB-MAX750, SA-MAX750, SB-MAX750P Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual