HITACHI SM9209 - Service Manual Immediate Download

SM9209

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

DVD DIGITAL THEATRE SYSTEM

SERVICE MANUAL

2002

November

Digital Media Division

HTDK160

A-

N/P

itle

tur

J/V

TIT

/PA

LIS

-HT

STANDBY

ENGLISH

SAFETY PRECAUTIONS

WARNING: The following precautions must be observed.

ALL PRODUCTS

Before any service is performed on the chassis an

isolation transformer should be inserted between the

power line and the product.

1. When replacing the chassis in the cabinet, ensure

all the protective devices are put back in place.

2. When service is required, observe the original

lead dressing. Extra precaution should be taken to

ensure correct lead dressing in any high voltage

circuitry area.

3. Many electrical

and

mechanical parts in

HITACHI products have special safety related

characteristics. These characteristics are often not

evident from visual inspection, nor can the

protection afforded by them necessarily be

obtained by using replacement components rated

for higher voltage, wattage, etc. Replacement

parts

which

have

these

special

safety

characteristics are identified by marking with a

! on the schematics and the replacement parts

list.

The use of a substitute replacement component

that does not have the same safety characteristics

as the HITACHI recommended replacement one,

shown in the parts list, may create electrical

shock, fire, X-radiation, or other hazards.

4. Always replace original spacers and maintain lead

lengths. Furthermore, where a short circuit has

occurred, replace those components that indicate

evidence of overheating.

5. Insulation resistance should not be less than 2M

ohms at 500V DC between the main poles and

any accessible metal parts.

6. No flashover or breakdown should occur during

the dielectric strength test, applying 3kV AC or

4.25kV DC for two seconds between the main

poles and accessible metal parts.

7. Before returning a serviced product to the

customer, the service technician must thoroughly

test the unit to be certain that it is completely safe

to operate without danger of electrical shock. The

service technician must make sure that no

protective device built into the instrument by the

manufacturer

has

become

defective,

inadvertently damaged during servicing.

CE MARK

1. HITACHI products may contain the CE mark on

the rating plate indicating that the product

contains parts that have been specifically

approved

provide

electromagnetic

compatibility to designated levels.

2. When replacing any part in this product, please

use only the correct part itemised in the parts list

to ensure this standard is maintained, and take

care to replace lead dressing to its original state,

as this can have a bearing on the electromagnetic

radiation/immunity.

PICTURE TUBE

1. The line output stage can develop voltages in

excess of 25kV; if the E.H.T. cap is required to be

removed, discharge the anode to chassis via a

high value resistor, prior to its removal from the

picture tube.

2. High voltage should always be kept at the rated

value of the chassis and no higher. Operating at

higher voltages may cause a failure of the picture

tube or high voltage supply, and also, under

certain circumstances could produce X-radiation

levels moderately in excess of design levels. The

high voltage must not, under any circumstances,

exceed 29kV on the chassis (except for projection

Televisions).

3. The primary source of X-radiation in the product

is the picture tube. The picture tube utilised for

the above mentioned function in this chassis is

specially constructed to limit X-radiation. For

continued X-radiation protection, replace tube

with the same type as the original HITACHI

approved type

4. Keep the picture tube away from the body while

handling. Do not install, remove, or handle the

picture tube in any manner unless shatterproof

goggles are worn. People not so equipped should

be kept away while picture tubes are handled

LASERS

If the product contains a laser avoid direct exposure to

the beam when the cover is open or when interlocks are

defeated or have failed.

CONTENTS

1 GENERAL INFORMATION ............................................... E1-1

1-1 SPECIFICATIONS ....................................................... E1-1

1-2 CONTROLLING VERSION OF FIRMWARE ............... E1-2

1-3 REPAIR INSTRUCTIONS ............................................ E1-3

2 EXPLODED VIEW ................................................................ 2-1

2-1 MAIN UNIT ..................................................................... 2-1

2-2 SUBWOOFER ................................................................ 2-2

3 REPLACEMENT PARTS LIST ............................................. 3-1

3-1 MAIN UNIT SECTION .................................................... 3-1

3-1-1 MECHANICAL PARTS LIST ..................................... 3-1

3-1-2 ELECTRICAL PARTS LIST ...................................... 3-2

TUNER ........................................................................... 3-2

SCART ........................................................................... 3-3

KEY PANEL .................................................................... 3-4

POWER .......................................................................... 3-5

MAIN ............................................................................... 3-6

3-2 SUBWOOFER SECTION ............................................... 3-9

3-2-1 MECHANICAL PARTS LIST ..................................... 3-9

3-2-2 ELECTRICAL PARTS LIST ................................... 3-10

AMP & JACK ................................................................ 3-10

POWER ........................................................................ 3-10

SCHEMATIC, CIRCUIT BOARD AND BLOCK DIAGRAMS ..... 1

1 MAIN UNIT SECTION ............................................................. 1

1-1 WIRING DIAGRAM ........................................................... 1

1-2 BLOCK DIAGRAM ............................................................ 2

1-3 SCHEMATIC DIAGRAMS ................................................. 3

TUNER ................................................................................. 3

SCART ................................................................................. 4

KEY PANEL .......................................................................... 5

POWER ............................................................................... 6

MAIN .................................................................................... 7

1-4 IC BLOCK DIAGRAMS ....................................................11

1-5 CIRCUIT BOARD DIAGRAMS ........................................ 16

TUNER ............................................................................... 16

SCART ............................................................................... 18

KEY PANEL ........................................................................ 19

POWER .............................................................................. 20

MAIN .................................................................................. 21

2 SUBWOOFER SECTION .......................................................23

2-1 WIRING DIAGRAM ......................................................... 23

2-2 BLOCK DIAGRAM .......................................................... 24

2-3 SCHEMATIC DIAGRAMS ............................................... 25

AMP & JACK ...................................................................... 25

POWER .............................................................................. 26

2-4 CIRCUIT BOARD DIAGRAMS ........................................ 27

AMP & JACK ...................................................................... 27

POWER .............................................................................. 28

E1 - 1

DVD Player

Pickup Semiconductor laser, Wavelength 650 mm

Signal system

NTSC / PAL

Video signal horizontal resolution 480 lines (DVD)

Video signal-to-noise ratio 50 dB (DVD)

Audio signal-to-noise ratio 60 dB

Total harmonic distortion 0.05%

Dynamic range DVD : 80 dB ; CD: 80 dB

FM Tuner

System PLL quartz-locked digital synthesizer system

Tuning range 87.50 ~ 108.00 MHz (50 kHz step)

Antenna FM pigtail antenna

Antenna terminals 75 ohms, unbalanced

Intermediate frequency 10.7 MHz

AM Tuner

System PLL quartz-locked digital synthesizer system

Tuning range 522~1620 kHz (9 kHz interval)

Antenna AM Loop antenna

Video outputs

CVBS Video 1 Vp-p 75 ohms

S-video Y: 1 Vp-p 75 ohms

C: PAL 0.3 Vp-p 75 ohms / NTSC 0.286 Vp-p 75 ohms

Scart out 1 Vp-p 75 ohms

Optical & Coaxial out 1 Vp-p 75 ohms

Audio line outputs

Audio L/R 1 Vrms, 1k ohms

Subwoofer 1.2Vrms maximum (adjustable), 1k ohms

Audio power outputs

Stereo mode 50 W + 50 W (8 ohms at 1 kHz, THD 10%)

Surround mode Front: 50 W + 50 W (8 ohms at 1 kHz, THD 10%)

Center: 50 W (8 ohms at 1 kHz, THD 10%)

Rear: 50 W + 50 W (8 ohms at 1 kHz, THD 10%)

Phones Headphones jack(stereo 3.54mm)

General (main unit)

Power requirements AC 220 - 240 V, 50 Hz

Power consumption 250 W

Dimensions W 435 x H 59 x D 345 mm

Weight 4.8 kg

Active Subwoofer

Output power : 100 W (4 ohms at 55Hz, THD 10%)

Speaker system : Bass reflex

Power requirements : AC 220 - 240 V, 50 Hz

Power consumption : 165 W

Speaker unit : 8 inches

Rated impedance : 4 ohms

Dimensions : W 200 x H 360 x D 345 mm

Weight : 9.8 kg

Front / Center / Rear speakers

Power: 50 W maximum

Speaker system: Bass reflex

Speaker unit: 3 inches,cone type: paper

Rated impedance: 8 ohms

Dimensions: W 90 x H 150 x D 110 mm

Weight: 0.64 kg (rear speaker)

0.82 kg (front , center speaker)

1-1 SPECIFICATIONS

MAIN UNIT

SPEAKERS

GENERAL INFORMATION

E1 - 2

1-2 CONTROLLING VERSION OF FIRMWARE

The firmware is regularly modified as required to improve the

performance.

Check to see whether the customer problem can be solved by

upgrading the firmware : If it can, do so.

1) Open the tray with power on.

2) While holding down the "ADJ/VOL (+)" key on remote con

trol, press the "Zoom" key.

3) The version of firmware will appear at the top left of screen.

(The display will disappear in approx. 5 seconds.)

VER XXXX

1 ATUO

EUR

2 0

Version No.

Region Code

Tuner Area

1) Turn power on.

2) Place the upgrade CD-R on tray, and press the"OPEN/

CLOSE" or "PLAY" key.

3) Messages will appear at the top left of screen in the order

shown below ("MP3 STOP" will appear in the display).

4) When rewrite of the firmware is complete, the system will

automatically turn off.

5) Unplug the power cord and then plug it in again.

6) Turn power on, and press the "OPEN/CLOSE" key while

"LOADING" is shown in the display to remove the upgrade

CD-R (if the CD-R is left in the tray, rewrite of the firmware

will restart).

7) Check the version of firmware.

Caution: Be sure not to unplug the power cord during the

rewrite operation.

Note:

If the firmware has been changed, etc., we will use Service

News, etc. to report on how to obtain new firmware data and

create an upgraded disc.

DISC LOADING

BANK30.ROM

READ START

015

WRITING

READ START

000

READ OVER

DONE

READ START

000

READ OVER

Power will automatically turn off.

* 1) 015 will be counted down to 000.

* 2) WRITING will flash.