Panasonic SC-HM910 Manuel utilisateur

SC-HM910

SC-HM810

Notes:

1. All the information are subject to change without notice.

2. Weigth and dimensions are approximate.

RQZM0167

ESPECIFICATIONS

UNIT

SA-HM910 Stereo

SB-HM910 Front Speaker

SB-PS810 Surround Speaker

SA-HM810 Stereo

SB-HM810 Front Speaker

SC-HM910

MODEL

Service Manual

Stereo system

SC-HM810



SA-HM910

SB-PS810 SB-PS810

SB-HM910 SB-HM910

Control

remoto SA-HM810

SB-HM810 SB-HM810

Control

remoto

POTENCIA DE SALIDA (AMPLIFICADOR)

SA-HM810

Front (Low) 114 W RMS per channel (6 Ω), 80 Hz , 10% DAT

(High) 54 W RMS per channel (6 Ω), 1 kHz , 10% DAT

Surround 32 W RMS per channel (8 Ω), 1 kHz , 10% DAT

Front (Low) 130 W RMS per channel (6 Ω), 80 Hz , 10% DAT

(High) 70 W RMS per channel (6 Ω), 1 kHz , 10% DAT

Surround 50 W RMS per channel (8 Ω), 1 kHz , 10% DAT

Subwoofer 100 W RMS (8 Ω), 80 Hz , 10 % DAT

SA-HM910

SC-HM910/SC-HM810

SPEAKERS INPUT DIMENSIONS WEIGHT

IMPEDANCE (b x h x l)

SB-HM910

FRONT 355 mm x 560 mm x 340 mm 9,2 Kg aprox.

Super Tweeter 3 cm - - - - - - - - -

Tweeter 6 cm - - - - - - - - -

Woofer 17 cm - - - - - - - - -

Super Woofer 30 cm - - - - - - - - -

(High) 6 Ω- - - - - -

(Low) 6 Ω- - - - - -

SB-PS810

SURROUND

Full Range 10 cm 8 Ω205 mm x 145 mm x 160 mm 1,3 Kg aprox.

AMPLIFIER SA-HM810 SA-HM910

Power output: 4700 W PMPO 7500 W PMPO

Power consumption: 190 W 280 W

Supply: 127 V ca ±10% 60 Hz

Input sensitivity: 250 mV

Frecuency range AM: 520 - 1710 kHz (10 kHz steps )

Frecuency range FM: 87,5 - 108,0 MHz (0,1 MHz steps )

87,9 - 107,9 MHz (0,2 MHz steps )

Dimensions (b x h x l ): 360 mm x 425 mm x 340 mm

Weight: 9,7 kg aprox. 9,8 Kg aprox.

SPEAKER SB-HM810

Input impedance: 6 Ω

Super Tweeter: 3 cm

Tweeter: 6 cm

Woofer: 17 cm

Super Woofer: 25 cm

Dimensions (b x h x l ): 355 mm x 560 mm x 340 mm

Weight: 8,9 kg aprox.

SC-HM910/SC-HM810

WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general

public.

It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service

a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians.

Any attempt to service or repair the porduct or products dealt with in this service information by anyone else could result

in serious injury or death.

CONTENTS

Page

1 Safety Precaution........................................................................................................................................................4

2 Before Repair and Adjustment .................................................................................................................................... 4

3 Protection Circuitry...................................................................................................................................................... 5

4 Accessories................................................................................................................................................................. 5

5 Front panel controls .................................................................................................................................................... 6

6 Handling Precautions For Traverse Deck ................................................................................................................... 8

7 Operation Checks and Main Component Replacement Procedures ..........................................................................9

8 Precaution of Laser Diode ........................................................................................................................................31

10 Self-Diagnostic Function ...........................................................................................................................................33

11 Cd Test Mode Function............................................................................................................................................. 35

12 Measurements and Adjustments ..............................................................................................................................36

13 Schematic Diagram................................................................................................................................................... 38

14 Printed Circuit Board.................................................................................................................................................54

15 Block Diagram........................................................................................................................................................... 66

16 Wiring Connection Diagram ......................................................................................................................................74

17 Illustration of IC, Transistors and Diodes ..................................................................................................................75

18 Terminal Function of IC............................................................................................................................................. 76

19 Troubleshooting Guide.............................................................................................................................................. 79

20 Parts Location and Replacement Parts List..............................................................................................................80

SC-HM910/SC-HM810

1 Safety Precaution

1. Before Servicing, unplug the power cord to prevent an electric shock.

2. When replacing parts, use only manufacture’s recommended components for safety.

3. Check the condition of the power cord. Replace if wear or damage is evident.

4- After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.

5. Before returning the serviced equipment to the customer, be sure to make the following insulation resistance test to prevent the

customer from being exposed to a shock hazard.

1.1 Insulation Resistance Test

1. Unplug the power cord and short the two prongs of the plug with a

jumper wire.

2. Turn on the power switch.

3. Measure the resistance value with ohmmeter between the jumper

ACplugandeachexposedmetalcabinet part,suchasscrewheads,

antenna, control shafts, handle brackets, etc.

Equipment with antenna terminals should read between 2.7MΩ

and 3.9MΩ to all exposed parts* (Fig.1).

Equipment without antenna terminals should read approximately

infinity to all exposed parts. (Fig.2).

*Note: Some exposed parts may be isolated from the chassis by

design. These will read infinity.

4. If the measurement is outside the specified limits, there is a possi-

bility of a shock hazard. The equipment should be repaired and

rechecked before it is returned to the customer.

Antenna

terminal

Exposed

metal part

Ohmmeter

Fig. 1

Resistance = 2.7 MΩ- 3.9 M Ω

Exposed

metal part

Ohmmeter

Fig. 2

Resistance = Approx

2 Before Repair and Adjustment

Disconnect AC power, discharge Power Supply Capacitors POWER PCB SC-HM910 C556, C557, C558, C559, C561, POWER PCB

SC-HM810 C531, C532, C533, C534 and TRANSFORMER PCB SC-HM910 C705, TRANSFORMER PCB SC-HM810 C402 through

a 10 Ω, 5W resistor to ground.

DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this way destroy solid state devices.

After repairs are completed, restore power gradually using a variac, to avoid overcurrent.

Current consumption at AC 127V, 60Hz in NO SIGNAL mode should be ~800mA.

SC-HM910/SC-HM810

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.

4 Accessories

Cable de alimentación (SJA168-1A) .................................. 1 pza.

Antena FM (N1EAYY000004) ............................................. 1 pza.

Control Remoto (N2QAHB000037) ..................................... 1 pza.

Soporte de la Antena AM (RMN0244)................................. 1 pza.

Antena AM (RSAM0002) ..................................................... 1 pza.

Baterías para el control remoto (UM-3PA) ........................ 2 pzas.

SC-HM910/SC-HM810

1(AC IN) Indicador de alimentación (Este indicador se

encenderá cuando el Sistema Estéreo esté

conectado).

, POWER ) Botón de encendido y modo de espera

(En modo de espera, el Sistema Estéreo consume

una pequeña cantidad de corriente eléctrica).

3(RHYTHM 1 , 2) Botones para activar los ritmos de

ambientación

4(SENSOR) Sensor de señal para el control remoto

5(APPLAUSES) Botón para activar el efecto de aplausos

6(EXPLOSION) Botón para activar el efecto de explosión

7(MIC VOL) Control de volumen del micrófono

8(MIC 1 , 2) Entradas para micrófono

9( DECK 1, OPEN) Botón para abrir el compartimento de

reproducción de cinta

10 (DECK 1) Compartimento para la reproducción de cinta

11 Charola para discos compactos

12 (MARKER) Botón para marcar las melodías

13 (1 - 5 ) Botones indicadores y de acceso directo para

la reproducción de discos compactos

14 ( ) Botón para abrir / cerrar la charola de discos

compactos

15 (ENTER) Botón para introducción

16 (TITLE SEARCH) Botón que permite seleccionar por título las

melodías y álbumes

17 Perilla Selector de melodías y álbumes MP3/WMA

18 (VOLUME DOWN, UP) Control de volumen

19 (PHONES) Salida de audífonos

20 ( DECK 2, OPEN) Botón para abrir el compartimento de repro-

ducción y grabación de cinta

21 (DECK 2) Compartimento para la reproducción y graba-

ción de cinta

22 (AUX) Botón para reproducción de la unidad auxiliar

........................................................................

23 (TUNER, BAND) Botón para seleccionar la banda de emisoras

de radio

24 Visualizador

25 (S. SOUND EQ)

Botón para realzar la calidad del sonido

(PRESET EQ)

Botón selector del ecualizador prefijado

27 ( / , / )

Botón para adelantar/atrasar los discos compactos/

cintas, seleccionar emisoras, ajustar la hora

28 (-DISPLAY/–DEMO) Botón selector del modo de visualización

29 (REC) Botón para grabación

30 (CD, ) Botón para reproducción y pausa de discos

compactos

31 (TAPE, ) Botón para reproducción y dirección de cintas

32 (S.WOOFER) Botón para el refuerzo de graves

33 (DELETE) Botón para borrar

34 (DECK 1/2) Botón selector de cintas

35 ( , STOP) Botón para alto total y borrar melodías

programadas

Consola central

Unidad principal

No. Nombre Pág.

5 Front panel controls

SC-HM910/SC-HM810

Los números que se encuentran en círculo negro como el 2 , son funciones que

se pueden operar tanto en el Sistema Estéreo como en el control remoto y se

encuentran referenciados en la página 6. Los botones que están en blanco como

el 36 , son funciones que se realizan sólo por medio del control remoto.

36 (SLEEP, -AUTO OFF) Botón para el temporizador programado y

apagado automático

37 (DISC) Botón selector de discos compactos

38 (PROGRAM) Botón para programar melodías de discos

compactos y preajustar emisoras

39 (PLAY MODE) Botón selector del modo de reproducción

40 (REPEAT) Botón para repetir melodías

41 ( , , ALBUM) Botones para cambiar de álbum

42 (INTRO) Botón de introducción

43 (SHIFT) Botón para usar las funciones etiquetadas en

naranja; al presionar [SHIFT]presione también

uno de los siguientes botones: [AUTO OFF],

[CLOCK/TIMER], [ PLAY/REC], [KARAOKE].

44 (DIMMER, PLAY/REC) Botón para opacar la iluminación y activar el

temporizador de reproducción y grabación

45 (CD DISP, CLOCK / TIMER)

Botón para seleccionar el modo de visualización

y ajustar el reloj y el temporizador

46 ( 10, 1-9, 0, A-Z, SPACE!”#)Botones numéricos y caracteres

47 ( , REW/ , CURSOR, , /FF, CURSOR)

Botones de búsqueda

de CD/rebobinado de cinta, sintonización/

selección de emisoras

preajustadas y ajuste de

la hora

48 (MUTING) Botón para silenciar el volumen

49 (KARAOKE) Botón para activar los efectos de karaoke

Control remoto

No. Nombre Pág.

5 Front panel controls

SC-HM910/SC-HM810

6 Handling Precautions For Traverse Deck

The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by static electricity of clothes

or human body.

So. be careful of electrostatic breakdown during repair of the traverse deck (optical pickup).

Handling of traverse deck (optical pickup)

1. Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive to electrical shock.

2. The short land between the No. 4 (LD) and No. 5 (GND) pins on the flexible board (FFC) is shorted with a solder build-up to

prevent damage to the laser diode. To connect to the PC board be sure to open by removing the solder build-up and finish the

work quickly.

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

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

Grounding for electrostatic breakdown prevention

1. Human body groundling

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

2. Work table grounding

Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pickup) isplaced, 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 lazer diode against electrostatics breakdown. Be sure to remove

the solder from the short point before making connections.

SC-HM910/SC-HM810

Gear for servicing (jig) information

1. Thisunithasagear which is used forcheckingitems(open/closeofdisc tray, up/down operation of traverseunitby

manually) when servicing.

2. For preparation of gear (for servicing), Perform the procedures as follows.

3. In case of re-servicing the same set, the “gear for servicing” may has been taken off because it has been used.

The “gear for servicing” must be stored.

1. Remove the gear provided with mechanism cover 2. Insert the hexagonal screwdriver (2 mm) into

theas shown below. thegear,and then projectthetipof screwdriver

for 1~2mm in length.

“ATTENTION SERVICER”

Some chassis components may 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 caution statement Precaution of Laser Diode.

7 Operation Checks and Main Component Replacement Procedures

SC-HM910/SC-HM810

7.1 Disassembly and assembly main unit

Step 1 Remove4screws eachsideand 8screwsat rearpanel.

Step 2 Lift up both sides of cabinet ass’y, push the cabinet

ass’y toward the rear and remove the cabinet ass’y.

Step 4 To open the CD tray, release the lever as show.

a x 4

b x 2

Step 5 Pull out the CD tray as shown and remove the CD

lid. Push back the CD tray after the CD lid has

been removed.

CD lid

Step 6 Remove the screws.

b x 13

Step 3 Remove 2 screws and remove the dust cover.

b x 8

7.2 Disassembly for the CD changer ass’y

(The CD changer unit can be removed after the CD Lid is removed)

• Follow the (Step 1) (Step 2) of item 7.1.

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