Sony SDM-X72 Service Manual

SERVICE MANUAL

SPECIFICATIONS

SDM-X72

US Model

Canadian Model

AEP Model

Chinese Model

LCD panel Panel type: a-Si TFT Active Matrix

Picture size: 17.0 inch

Input signal format RGB operating frequency*

Horizontal: 28 – 92 kHz Vertical: 56 – 85 Hz

Resolution Horizontal: Max.1280 dots

Vertical: Max.1024 lines

Input signal levels Analog RGB video signal

0.7 Vp-p, 75 Ω , positive

SYNC signal

TTL level, 2.2 kΩ , positive or negative (Separate horizontal and vertical, or composite sync)

0.3 Vp-p, 75Ω , negative

(Sync on green) Digital RGB (DVI) signal: TMDS (Single link)

Power requireme n ts 100 – 240 V, 50 – 60 Hz,

0.9

Max. A

Power consumption Operating temperature 5 – 35

Max. 40 W

°

C

Dimensions (width/height/depth)

Display (upright):

Approx. 438 ×410 × 227 mm

1

/4 × 16 1/4 × 9 inches)

(17 (with stand) Approx. 438 × 356 × 84 mm

1

/4 × 14 1/8 ×3 3/8inches)

(17 (without stand)

Mass

Plug & Play DDC2B

* Recommended horizon tal and vertical timing condition

• Horizontal sync width dut y should be more than 4. 8% of total

horizontal time or 0.8 µs, whichever is larger.

• Horizontal blanking width should be more than 2.5 µsec.

• Vertical blanking width sh ould be more than 450 µsec.

Design and specification s are subject to change without noti ce.

Approx. 7.1 kg (15 lb 10 oz) (with stand) Approx. 5.3 kg (11 lb 11 oz) (without stand)

TFT LCD Color Computer Display

1.5 k

Ω

0.15 µF

AC Voltmeter (0.75 V)

To Exposed Metal Parts on Set

Earth Ground

SAFETY CHECK-OUT

After correcting the original service problem, perform the following safety checks before releasing the set to the customer:

1. Check the area of your repair for unsoldered or poorly-soldered connections. Check the entire board surface for solder splashes and bridges.

2. Check the interboard wiring to ensure that no wires are “pinched” or contact high-wattage resistors.

3. Check that all control knobs, shields, covers, ground straps, and mounting hardware have been replaced. Be absolutely certain that you have replaced all the insulators.

4. Look for unauthorized replacement parts, particularly transistors, that were installed during a previous repair. Point them out to the customer and recommend their replacement.

5. Look for parts which, though functioning, show obvious signs of deterioration. Point them out to the customer and recommend their replacement.

6. Check the line cords for cracks and abrasion. Recommend the replacement of any such line cord to the customer.

7. Check the connector shell, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC Leakage. Check leakage as described right.

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes). Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA WT540A. Follow the manufacturers’ instructions to use these instruments.

2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOMs that are suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suitable. (See Fig. A)

Fig. A. Using an AC voltmeter to check AC leakage.

SDM-X72(E) 2

WARNING!!

AVERTISSEMENT!!

SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY SHADING AND MARK ! ON THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS LIST ARE CRITICAL FOR SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE CRITICAL FOR SAFE OPERATION ARE IDENTIFIED IN THIS MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITICAL COMPONENTS ARE REPLACED OR IMPROPER OPERATION IS SUSPECTED.

ATTENTION AUX COMPOSANTS RELATIFS À LA SÉCURITÉ!! LES COMPOSANTS IDENTIFIÉS PAR UNE TRAME ET UNE MARQUE ! SONT CRITIQUES POUR LA SÉCURITÉ. NE LES REMPLACER QUE PAR UNE PIÈCE PORTANT LE NUMÉRO SPECIFIÉ. LES RÉGLAGES DE CIRCUIT DONT L’IMPORTANCE EST CRITIQUE POUR LA SÉCURITÉ DU FONCTIONNEMENT SONT IDENTIFIÉS DANS LE PRÉSENT MANUEL. SUIVRE CES PROCÉDURES LORS DE CHAQUE REMPLACEMENT DE COMPOSANTS CRITIQUES, OU LORSQU’UN MAUVAIS FONCTIONNEMENT EST SUSPECTÉ.

SDM-X72(E) 3

POWER SAVING FUNCTION

g

AUTOMATIC PICTURE QUALITY ADJUSTMENT FUNCTION

(ANALOG RGB)

This monitor meets the power-saving guidelines set by VESA,

E

NERGY STAR, and NUTEK. If the monitor is connected to a computer or video graphics board that is DPMS (Display Power Management Signaling) compliant, the monitor will automatically reduce power consumption as shown below.

Power mode Power consumption

1

(power)

indicator

normal

40 W (max.) green

operation active off*

3 W (max.) orange

(deep sleep)** 1 (power) off 1 W red main power of f 0 W off

* When your computer enters the “active off” mode, the input signal is

cut and NO INPUT SI GNAL appears on the screen . After 10 s econds, the monitor enters the po w er sa vin g m ode .

** “Deep sleep” is a powe r saving mode defined by t he Environmental

Protection Agency.

Note

ZZ...

If the (POWER SAVE) is set to OFF (page 16), th e monitor does not enter the power saving mode.

When the monitor receives an input signal, it automatically adjusts the picture’s position and sharpness (phase/pitch), and ensures that a clear picture appears on the screen.

The factory preset mode

When the monitor receives an input signal, it automatically matches the signal to one of the fact ory preset modes stored in th e monitor’s memory to provide a high quality picture at the center of the screen. If the input signal matches the factory pre set mode, the picture is appears on the screen automatically with the appropriate default adjustment.

If input signals do not match one of the factory preset modes

When the monitor receives an input signal , the automat ic pict ure quality adjustment function of this monitor is activated and ensures that a clear picture always appears on the screen (wit hin the following monitor frequency ranges): Horizontal frequency: Vertical frequency: Consequently, the first time the monitor receives input signals that do not match one of the factory preset modes, the monitor may take a longer time than normal for displaying the picture on the screen. This adjustment data is automatically stored in memory so that next time, the monitor will function in the same way as when the monitor receives the signals that match one of the factory preset modes.

28 – 92 kHz 56 – 85 Hz

If you adjust the phase, pitch, and pictures position manually

For some input signals, the automatic picture quality adjustment function of this monitor may not completely adjust the picture position, phase, and pitch. In this case, yo u can manually set these adjustments (page 13). If you manually set these adjustments, they are stored in memory as user modes and automatically recalled whenever the monitor receives the same input si

nals.

SDM-X72(E) 4

DISASSEMBLY

1 Rear cover

3 Four screws

(+PWH 3X12)

4 Cabinet assy

Protection sheet

2 Four screws (+PSW 4X10)

SDM-X72(E) 1-1

1-2. H BOARD REMOVAL

2 Three screws

(+PTP 3X8)

3 H Board

CN901

1 Connector

SDM-X72(E) 1-2

1-3. I BOARD REMOVAL

2 Invertor shield

3 Connector

CN03

1 Screw

(+PWH 3X6)

3 Connector

CN01

4 Screw

(+PWH 3X6)

3 Connector

CN02

5 I Board

SDM-X72(E) 1-3

1-4. A BOARD REMOVAL

1 Four screws

(+PWH 3X6)

2 Interface shield

4 Connector

CN304

5 Four screws

(+PWH 3X6)

4 Connector

CN202

4 Connector

CN501

4 Connector

CN201

4 Connector

CN801

6 A Board

4 Six connector screws

SDM-X72(E) 1-4

1-5. G BOARD REMOVAL

3 Connector

CN203

1 Two screws

(+PWH 3X6)

2 Power shield

4 Screw

(+PWH 3X6)

5 G Board

3 Connector

CN102

3 Connector

CN101

SDM-X72(E) 1-5

1-6. U BOARD AND LCD UNIT REMOVAL

3 Two screws

(+PTP 4X10)

3 Two screws

(+PTP 4X10)

4 LCD unit

2 Screw

(+PWH 3X6)

1 Connector

CN851

6 Screw

(+PTP 3X8)

7 U Board

5 Connector

CN852

SDM-X72(E) 1-6

1-7. LCD PANEL REMOVAL

2 LCD panel

1 Two screws

(+P 3X4)

1 Two screws

(+P 3X4)

SDM-X72(E) 1-7

SECTION 2

ADJUSTMENTS

2-1. Service Functions of Buttons in Front Panel

The following functions are available for servicing the set.

1. To display the model information

Press the MENU button for five seconds or more in the ordinary power-on state, and the following information is displayed on the screen:

- Model name

- Serial number

- Manufactured year and week This function is described in the instruction manual also.

2. To display ETI (Elapsed Time Indicator)

Press the OK button for five seconds or more in the ordinary power-on state, and the cumulative power-on time excluding the power-off and power saving state is displayed on the screen.

3. All mode recall

Press the POWER button with pressing the OK button in the power-off state, and the user memory is completely cleared and the system is reset to the factory setting. This reset is similar to RESET in the OSD menu, but differs from it in the following:

- The NO SYNC AGING flag is cleared.

- LANGUAGE is set to ENGLIDH.

- INPUT is set to INPUT1: DVI-D.

5. To enter the service mode

Press the POWER button with pressing the UP (↑) and DOWN (↓) buttons in the power-off state, and the system is set to the service mode. The service mode will be explained later. To exit from the service mode, turn off the power.

6. To copy EDID to the EEPROM and to clear ETI

Press the POWER button with pressing the UP (↑) and OK buttons in the power-off state, and the data for the model information are copied to the EEPROM for the internal microcontroller from EDID of INPUT2: HD15, and the model information display is made correct. When replacing the A board, this operation is required after writing EDID and at the same time ETI is reset to 0.

7. To enter the ISP mode

Turn on the MAIN POWER switch with pressing the DOWN (↓) button in the main-power-off state, and the system enters the ISP mode. The POWER LED goes off, and both input LED's 1 and 2 light on, and the picture disappears, and any button becomes invalid. In the ISP mode, the internal software can be updated with an external personal computer using a special fixture. To cancel the ISP mode, turn off the MAIN POWER switch.

4. To set the NO SYNC AGING flag

Press the POWER button with pressing the UP (↑) button in the power-off state, and the NO SYNC AGING flag is set. In this setting, when the input with no input signal is selected, the system goes into the AGING MODE. The NO SYNC AGING flag is held until it is cleared. To clear the NO SYNC AGING flag, go into the service mode and then set the AGING MODE to OFF, or execute the all mode recall.

SDM-X72(E) 2-1

2-2. Uses of Service Mode

1. Turn off the power with the POWER button in the front panel. The red POWER LED lights on.

2. Press the POWER button in the front panel with pressing the UP (↑) and DOWN (↓) buttons, and the system enters the service mode. When no signal is input to the selected input terminal, the following functions are disabled.

3. Press the MENU button, and the main menu is displayed. Then go to page 2 of the main menu with the UP (↑) or DOWN (↓) button, then select the MAINTAIN icon on the bottom line, and then press the OK button.

4. In this menu screen, the version number and released date of the internal software can be checked.

5. The structure of the MAINTAIN menu is shown below.

MAINTAIN

CONFIGURATI ON

CHIPS

EXIT

COLOR TEMP

INITIAL EEPROM CLEAR ETI TIME

EEPROM TEST

RGB RESET

EXIT

AGING MODE

REGISTERS VALUE

9300K

6500K

EXIT

ON

OFF

CONTROL REG

EXIT

SUB-BRIGHTNESS

R G B

SUB-CONTRAST

R G B

EXIT

000~1FF

The operation procedure is basically same as that of the ordinary user controls. The function of each menu is explained in next section.

SDM-X72(E) 2-2

2-3. Functions of Service Mode

2-4. White Balance Adjustment

1. COLOR TEMP

This is used for the white balance adjustment at color temperature 9300 K and 6500 K. The adjustment requires to be done for every input (INPUT1: DVI-D, INPUT1: HD15, or INPUT2: HD15) by switching the input. The adjustment data is stored into the register for respective inputs.

2. INITIAL EEPROM

This sets the data of the EEPROM to the default data. This operation is not required usually.

3. CLEAR ETI TIME

This resets the ETI (Elapsed Time Indicator) counter to 00000 H.

4. EEPROM TEST

This tests writing and reading of the EEPROM.

5. RGB RESET

This adjust the offset and gain of the input AD converter for the analog inputs (INPUT1: HD15 and INPUT2:HD15). As these adjustments are common to both inputs, perform them for either input. It is unnecessary for another input. Execute the adjustments under the condition where the signal specified in "White Balance Adjustment" is input.

6. AGING IN MODE

This sets and clears the NO SYNC AGING flag. AGING MODE = ON: Sets the NO SYNC AGING flag. AGING MODE = OFF: Clears the NO SYNC AGING flag. When the NO SYNC AGING flag is set and the input with no input signal is selected, the system goes into the AGING MODE. The NO SYNC AGING flag is held until it is cleared. To clear the NO SYNC AGING flag, go into the service mode and then set the AGINGN MODE to OFF, or execute the all mode recall.

< Preparation >

(1) Measurement point : Center of screen (2) Measurement distance : 50 cm (3) Measurement angle : 90° (4) Color analyzer (Minolta CS-1000 or equivalent) (5) Signal generator (Astro Design VG-828D or equivalent) Be sure to calibrate the analog RGB output level with 75Ω termination.

1. Service mode setting

Enter the service mode referring to step 1 and 2 of Section 2-2.

2. Aging

Set the AGING MODE in the service mode to ON. Disconnect the signal input terminal or select the input with no signal input, and the system goes into the AGING MODE. Execute aging for 30 minutes or more.

3. User control setting

Feed a signal to the selected input, and then execute reset in the menu screen. Then, move the menu display position to avoid the measurement point. Or, set the following for respective inputs.

BACKLIGHT (Brightness of backlight) = 100 CONTRAST = 70 BRIGHTNESS = 50 Menu display position = not center of screen (Avoid the measurement point.) (The setting of the menu display position is common to respective inputs.) ECO = OFF (The setting of ECO is common to respective inputs.)

Do not change the above setting until the white balance adjustment is completed.

7. CONTROL REG.

This can check the data of the internal registers. This operation is not required usually.

SDM-X72(E) 2-3

4. Analog RGB white balance adjustment

(1) Feed the signal listed below to INPUT2: HD15, and then select INPUT2: HD15. Then execute RGB RESET in the service mode menu.

Signal timing

Pattern

Input level

(6) Adjust the SUB-BRIGHTNESS: R, G, and B. Specifications are listed below.

x

0.313 ± 0.003

y

0.329 ± 0.003 10± 0.7

Brightness (cd/m2)

VESA 1280 * 1024 / 60Hz

Gray scale

0.73 Vp-p

(2) Feed the signal listed below to INPUT2: HD15.

Signal timing

VESA 1280 * 1024 / 60Hz

Pattern

All gray

Pattern

30 IRE (0.21 Vp-p)

(3) Select COLOR TEMP → 9300K in the service mode menu, and set the data listed below as initial data for adjustment.

SUB-BRIGHTNESS R

40

G

40

B

40

SUB-CONTRAST

R

148

G

148

B

143

(4) Adjust SUB-BRIGHTNESS: R, G, and B. Specifications are listed below.

x

0.283 ± 0.003

y

0.298 ± 0.003 12± 0.7

Brightness (cd/m2)

(7) After adjusting (4) and (6), write down the value of SUB-CONTRAST and SUB-BRIGHTNESS. (8) Feed the signal to INPUT1: HD15, and then select INPUT1: HD15. Select COLOR TEMP → 9300K then 6500K in the service mode menu, and enter the value written down in step (7) respectively.

5. Digital RGB white balance adjustment

(1) Feed the signal listed below to INPUT1: DVI-D.

Signal timing

VESA 1280 * 1024 / 60Hz

Pattern All gray

Input level

30 IRE

(2) Select COLOR TEMP → 9300K in the service mode menu, and set the data listed below as initial data for adjustment.

SUB-BRIGHTNESS R

40

G

40

B

40

SUB-CONTRAST

R

132

G

132

B

132

(3) Adjust the SUB-BRIGHTNESS: R, G, and B. Specifications are listed below.

(5) Select COLOR TEMP → 6500K in the service mode menu, and set the data listed below as initial data for adjustment.

SUB-BRIGHTNESS R

40

G

40

B

40

SUB-CONTRAST

R

145

G

143

B

138

x

0.283 ± 0.003

y

0.298 ± 0.003 12± 0.7

Brightness (cd/m2)

SDM-X72(E) 2-4

(4) Select COLOR TEMP → 6500K in the service mode menu, and set the data listed below as initial data for adjustment.

2-5. Action after Replacing the LCD Panel and Board

SUB-BRIGHTNESS R

40

G

40

B

40

SUB-CONTRAST

R

132

G

132

B

132

(5) Adjust the SUB-BRIGHTNESS: R, G, and B. Specifications are listed below.

x

0.313 ± 0.003

y

0.329 ± 0.003 12± 0.7

Brightness (cd/m2)

6. Setting for shipping

Turn off the power with the POWER button in the front panel. Check that the red POWER LED lights on, and then execute the all mode recall. (press the POWER button with pressing the OK button in the power-off state)

1. After replacing the LCD panel

(1) White balance adjustment. (Refer to Section 2-4.) (2) CLEAR ETI TIME. (Refer to Section 2-3 step 3.) (3) Check of picture and sound.

2. After replacing the A board

(1) White balance adjustment. (Refer to Section 2-4.) (2) EDID writing. As the write protection is not applied in this unit, it is possible to write data with an ordinary writing fixture. It is required to be written for INPUT1: DVI-D, INPUT1: HD15, and INPUT2: HD15 respectively. Take care that the data for DVI-D and HD15 terminals are different from each other. (3) EDID copy to the EEPROM and ETI clear. (Refer to Section 2-1 step 6.) Be sure to perform them after EDID writing. After executing, check that the correct model information is displayed. (Refer to Section 2-1 step 1.) (4) Operation check of buttons and LED's in the front panel, and Check of picture and sound for respective inputs.

3. After replacing the I board

(1) White balance adjustment. (Refer to Section 2-4.) (2) Check of picture and sound.

4. After replacing the G board

(1) Operation check of the MAIN POWER switch. (2) Check of picture and sound.

5. After replacing the H board

(1) Operation check of buttons and LED's in the front panel.

6. After replacing the U board

(1) Check of speaker sound. (2) Check of headphone jack sound.

When connecting a plug to the headphone jack, confirm no sound from the speakers.

SDM-X72(E) 2-5

3-1. BLOCK DIAGRAMS

SECTION 3

DIAGRAMS

CN602

CN603

CN601

A BOARD (INTERFACE)

CN301

IC307

IC603

IC401

I BOARD

(INVERTER)

BOARD

IC502

CN501

IC503

IC503 IC504 IC505

IC302

IC303

IC305

IC304

IC201

IC601

CN802

CN803

IC802

IC301

IC801

H BOARD (IKEY BOARD)

CN801

G BOARD (POWER)

U BOARD (EARPHONE)

SDM-X72(E) 3-1

3-2. CIRCUIT BOARDS LOCATION

A Board

I Board

H Board

G Board

U Board

SDM-X72(E) 3-2

3-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS

Note:

• All capacitors are in µF unless otherwise noted. (pF: µµF) Capacitors without voltage indication are all 50 V.

• Indication of resistance, which does not have one for rating electrical power, is as follows.

Pitch: 5 mm Rating electrical power 1/4 W (CHIP : 1/10 W)

• All resistors are in ohms.

• : nonflammable resistor.

• : fusible resistor.

∆ : internal component.

•

• : panel designation, and adjustment for repair.

• All variable and adjustable resistors have characteristic curve B, unless otherwise noted.

• : earth-ground.

• : earth-chassis.

• When replacing the part in below table, be sure to perform the related adjustment.

• All voltages are in V.

• Readings are taken with a 10 M digital multimeter.

• Readings are taken with a color-bar signal input.

• Voltage variations may be noted due to normal production tolerances.

•

• Circled numbers are waveform references.

• : B + bus.

• : B – bus.

: Can not be measured.

*

• Divided circuit diagram One sheet of A board are circuit diagram is divided into eight sheets, each having the code A-a to A-h. For example, the destination ab1 on the code A-a sheet is connected to ab1 on the A-b sheet. a b 1

Ref. No. Circuit diagram division code

Note: The components identified by shading and

mark ! are critical for safety. Replace only with part number specified.

Note: Les composants identifiés par un tramé et

une marque ! sont critiques pour la sécurité. Ne les remplacer que par une pièce portant le numéro spécifié.

SDM-X72(E) 3-3

(1) Schematic Diagrams of A (a, b, c, d, e, f, g, h) Board

A

B

C

D

1

ag 1

afg2

2

0

0.2

0

43

+12V

7.7

7.5

7.7

1.2

7.7

2.5

10.8

10.6

2.5

1.2

0

I/F

0

1.0

0.2

7.5

+12V

10.6

+5V REG

98765

+5V

10

11

12

TO

G BOARD

CN203

13

14

15

E

F

G

H

10.8

+3.3V REG

+3.3V

+3.3V REG +3.3V REG

+5V

+3.3V

+5V

+3.3V

A

-

a

+5V

+2.5V REG

+5V

+2.5V

af 3

(POWER)

B-SS3627<J..>-A..-P1

• Divided circuit diagram One sheet of A board are circuit diagram is divided into eight sheets, each having the code A-a to A-h. For example, the destination ab1 on the code A-a sheet is connected to ab1 on the A-b sheet.

I

a b 1

Ref. No. Circuit diagram division code

SDM-X72(E) 3-4

A

B

C

1

INPUT 1

DVI-D INPUT

(DIGITAL RGB)

2

ag 3

43

98765

10

11

12

bd 5

13

14

D

E

F

G

H

• Divided circuit diagram One sheet of A board are circuit diagram is divided into eight sheets, each having the code A-a to A-h. For example, the destination ab1 on the code A-a sheet is connected to ab1 on the A-b sheet. a b 1

Ref. No. Circuit diagram division code

4.4

EEPROM

4.4

bc6

bg7

bc8

+5V

4.4

4.9

4.4

4.9

SW

4.9

4.8

0

bg 9

bg 10

A-b

(DVI AND DDC SWITCH IC)

B-SS3627<J..>-A..-P2

I

J

SDM-X72(E) 3-5

A

1

2

43

98765

10

11

12

13

14

15

B

C

D

E

INPUT 2 HD 15 INPUT (ANALOG RGB)

c g 1 1

c g 1 2

b c 8 b c 6

+5V

4.4

EEPROM

c g 16

0.6

+5V

0

+5V

0

+5V SW

F

G

H

I

J

K

INPUT 1 HD 15 INPUT (ANALOG RGB)

c g 1 3

c g 1 4

+5V

4.4

AT2XC02-10SC

EEPROM

• Divided circuit diagram One sheet of A board are circuit diagram is divided into eight sheets, each having the code A-a to A-h. For example, the destination ab1 on the code A-a sheet is connected to ab1 on the A-b sheet. a b 1

Ref. No. Circuit diagram division code

c g 1 5

c d 1 9

c d 1 7

c g 1 8

ANALOG SW

A-c

(ANALOG)

B-SS3627<J..>-A..-P3

SDM-X72(E) 3-6

1

2

43

98765

10

11

12

13

14

15

A

B

C

D

E

+3.3V

+3.5V

cd19

df27

df26

df28

df29

df30

df31

df32

F

G

H

IC401

bd5

+2.5V

cd17

+2.5V

+3.3V

I

+2.5V

df20 dh21 dg22

dg23 dg24

dg25

GM5020 SCALER

de33

de34

de35

de36 de37

J

• Divided circuit diagram One sheet of A board are circuit diagram is divided into eight sheets, each having the code A-a to A-h. For example, the destination

K

ab1 on the code A-a sheet is connected to ab1 on the A-b sheet. a b 1

Ref. No. Circuit diagram division code

A

-

d

(SCALER)

B-SS3627<J..>-A..-P4

SDM-X72(E) 3-7

A

B

C

1

de34

2

43

+3.3V +3.3V +3.3V

98765

10

11

12

13

de33

14

15

D

E

G

1.2

1.3

1.2

1.1

1.7

1.6 0 0

1.3

3.3

de35

de36 de37

3.3

3.3 0 0

SDRAM SDRAM SDRAM

1.8

0.7

2.2

0.6

0.8

1.0

0.6

1.0

0.1

0.9

0.3

0.8

1.0

1.2

1.3

1.2

1.1

1.7

1.6

1.3

3.3

1.8

0.7

2.2

0.6

0.8

1.0

0.6

0 0

1.0

0.1

0.9

0.3

0.8

1.0

1.2

1.3

1.2

1.1

1.7

1.6

1.3

3.3

0 0

3.3

1.8

0.7

2.2

0.6

0.8

1.0

0.6

1.0

0.1

0.9

0.3

0.8

1.0

0

F

H

A

-

e

(SDRAM)

I

• Divided circuit diagram One sheet of A board are circuit diagram is divided into eight sheets, each having the code A-a to A-h. For example, the destination ab1 on the code A-a sheet is connected to ab1 on the A-b sheet. a b 1

Ref. No.

J

Circuit diagram division code

B-SS3627<J..>-A..-P5

SDM-X72(E) 3-8

A

1

2

43

98765

10

11

12

13

14

15

B

C

D

E

d f 3 0

a f 3

a f g 2

0

THC63LVDM83A

IC501 LVDS

3.8

0.7

+12V

0

+3.3V

d f 2 7

+5V

IC502

THC63LVDM83A

LVDS

1.3

1.2

1.3

1.2

1.3

1.2

TO LCD

1.2

1.1

1.3

1.2

1.3

1.1

1.2

1.3

+3.3V

f g 3 8

d f 2 0

G

H

d f 3 1

d f 2 8

F

d f 3 2

d f 2 6

d f 2 9

A

-

f

(LVDS)

I

• Divided circuit diagram One sheet of A board are circuit diagram is divided into eight sheets, each having the code A-a to A-h. For example, the destination ab1 on the code A-a sheet is connected to ab1 on the A-b sheet.

J

a b 1

Ref. No. Circuit diagram division code

B-SS3627<J..>A..-P6

SDM-X72(E) 3-9

A

1

2

43

98765

10

11

12

13

14

15

B

C

D

E

EEPROM

4.9

+5V

4.9

0.6

dg24

dg25

0.3

0.2

4.5

4.9 0

0

bg9

fg38

cg12

4.9

4.9 0

4.9

1.1

1.2 0

0.1

0

MCU

4.9

4.9 0

3.1

0 0

4.9

0.1 0 0

afg2

4.9

0

bg4

bg10

cg11

cg14

cg16 cg18

0.1

ag1

cg13

cg15

gh39

G

H

F

4.9

0

TO H BOARD CN901

4.9

-9.0

0

-5.1

7.5

0

+5V

I / F

0

-9.0

0

4.9

4.8

0

4.8

0

dg22

gh40

bg7

0.5

10.9

4.9

3.0

3.3

dg23

5.2

4.9

TO I BOARD CN01

I

5.2

0

J

A

-

g

(MCU)

K

• Divided circuit diagram One sheet of A board are circuit diagram is divided into eight sheets, each having the code A-a to A-h. For example, the destination ab1 on the code A-a sheet is connected to ab1 on the A-b sheet. a b 1

Ref. No. Circuit diagram division code

B-SS3627<J..> - A..-P7

SDM-X72(E) 3-10

1

2

43

98765

10

11

12

13

14

15

A

B

C

D

E

INPUT2 AUDIO I N

INPUT1 AUDIO I N

AUDIO SW

dh21

5.8

5.7

5.8

AUDIO AMP

gh40

5.8

5.7

0

gh39

A

-

h

(AUDIO AND EARPHONE)

TO U BOARD CN851

G

B-SS3627<J..> - A..-P8

F

• Divided circuit diagram One sheet of A board are circuit diagram is divided into eight sheets, each having the code A-a to A-h. For example, the destination ab1 on the code A-a sheet is connected to ab1 on the A-b sheet. a b 1

Ref. No. Circuit diagram division code

SDM-X72(E) 3-11

A

1 2 34

A

B

C

[

MAIN CPU,SYSTEM IC,COLOR DEC,A/D CONV,3D COMB FILTER

— A BOARD —

1 2 34

A

B

]

C

SDM-X72(E) 3-12

(2) Schematic Diagram of H Board

1

2

A

B

C

D

43

TO

A(g)BOARD

CN303

98765

10

11

H

(KEY)

B-SS3627<J..>-H..

E

F

SDM-X72(E) 3-13

H

[

]

KEY

— H BOARD —

SDM-X72(E) 3-14

(3) Schematic Diagrams of I Board

A

B

C

D

E

F

G

1

5V

ICT53

5V

D06

BAS32

OP11

D04

BAS32

OP22

D05

BAS32

OP44

R41 ICT54 R42

2.7

PDRV_C

ICT58

R46

2.7

PDRV_A

C23

0.1u

C24

0.1u

C25

0.1u

2k

1k

R45

1k

2k

VIN

8.0

ICT55

6.0

Q1

2N7002LTA

VIN

8.0

6.0

Q8

2N7002LTA

ICT60

2

8.0

(INVERTOR)

43

CN01

7PIN

ICT56

Q10

BC817-25

ICT57

R04

8.0

10

P_C

Q11

BC807-25

Q16

BC817-25

R15

ICT59

10

P_A

Q17

BC807-25

R50

100k

0

8.4

1M

8.7

1M

8.2

2N7002LTA

0

2N7002LTA

0

2N7002LTA

R28

R29 1M

R30

I

TO A (g) BOARD CN202

5V

FB

1.2

Q24

0

2N7002LTA

Q25

Q26

Q27

PBC

VCC

GND

OFF

ADJ

D01

BAS32

OP1

D02

BAS32

OP2

D03

BAS32

OP4

D11

1SS355

D12

1SS355

D13

1SS355

F01

2A

D

63V

1

ICT19

2

3

4

6

0

5

7

ICT38

4.9

UDZSTE-175.6B

ICT51

C21

0.1u

ICT50

C22

0.1u

ICT52

C03

0.1u

YST-A186490

1

VP11

2

4

5

VP22

FB11

FB22

ZD01

R05

1M

R06

R07

1M

T06

VIN

ICT39

R12 47k

ICT42

R35 560

5V

C05

0.01u

R10 10k

ENA

CN07

2PIN

1

2

R36 390

1.2

ICT65

C07

ICT34

C04

1u

FB

C06

0.01u

ICT37

R09

22

ICT40

C09 1u

C08

1u

R14

681k

ICT44

R39 33k

D07

0

D21

100

10k

Q06

BC817-25

R08

R03

+5V

R11

100k

ICT43

0

Q02

2N7002LTA

0

Q03

8.8

2N7002LTA

ICT48

0

9.0

1M

8.9

Q04

2N7002LTA

ICT49

0

Q05

2N7002LTA

R01

ICT13

ICT63

7

D19

CY06

1SS226

22p

6

B

OP44

ICT64

R13

ICT35

C10 0.1u

1.2

2.1

C38

0.0015u

27k

5.1

4.8

5.0

ICT45

0.1

0.5

+12V

IC01

OZ9601S

1 2 3 4 5 6 15

2.5V

7 8 9

10 11

ICT46

R16

51k

D

F02 2A 63V

20 19 18 17 16

14 13 12

ICT29

C

+

ICT28

0.01u

C36

220u

ICT31

PDRV_A

PDRV_C NDRV_D

C11

R17 30k

2.4

2.6

2.0

1.5

3.0

1.2

2.0

R20 15k

+12V

N_B

P_A

N_D

P_C

NDRV_B

ICT26

ICT33

R19

1M

PBC

2.4

8.0

2.4

8.0

NDRV_B

NDRV_D

C12

220p

J01

C13 0.01u

C15

0.1u

IC04 8958

1

IC05 8958

1

ICT23

ICT21

C40 10u

ICT8

ICT27

VP11

R18

20

R43

20

R21 62k

1SS355

ICT20

C14

D08

5.8

ICT66

C33

+

220u

35v

ICT22

N_B

N_D

D09

1SS355

D10

1SS355

YST-A186490

1

2

4

5

VP22VP11

ICT16

YST-A186490

1

2

5

5.8

98765

ICT18

ICT1

ICT25

IC02

8958

1

2.4

N_B

8.0

P_A

ICT24

VP1

IC03 8958

1

2.4

N_D

8.0

P_C

ICT17

T03

YST-A186490

1

VP1

VP2

FB1

FB2

T04

7

6

T05

674

7

2

C19

333p

6

4

5

ICT14

ICT15

ICT36

CY04

22p

ICT41

CY05

22p

10

T01

YST-A186490

ICT3

1

2

674

5

VP2VP1

C39

10u

ICT2

5.8

T02

YST-A186490

ICT6

1

2

674

5

5.8

CY03

ICT11

22p

D16

B

1SS226

R26 560

OP4

R27

ICT12

390

D20

B

1SS226

ICT47

D17

B

1SS226

R31 560

OP11 FB11

ICT30

ICT32

D18

B

1SS226

R33 560

OP22 FB22

ICT68

ICT9

CY01

22p

D14

B

1SS226

R22 560

OP1 FB1

ICT4

CY02

22p

D15

B

1SS226

R24

560

OP2 FB2

ICT7

ICT10

R32 390

ICT67

R34

390

ICT5

11

CN02

2PIN

1

TO LCD BACK LIGHT

2

R23 390

CN03

2PIN

1

TO LCD BACK LIGHT

2

R25 390

CN04

2PIN

1

TO LCD BACK LIGHT

2

CN05

2PIN

1

TO LCD BACK LIGHT

2

CN06 2PIN

1

TO LCD BACK LIGHT

2

12

13

H

B-SS3627<J..> - I..

SDM-X72(E) 3-15

I

[

INVERTER

— I BOARD —

]

SDM-X72(E) 3-16

(4) Schematic Diagram of U Board

1

2

A

TO A (h)BOARD CN801

B

C

D

43

HEAD PHONE

98765

10

11

E

F

G

U

(EARPHONE)

B-SS3627<J..>-U..

SDM-X72(E) 3-17

U

[

EARPHONE

— U BOARD —

SDM-X72(E) 3-18

(5) Schematic Diagrams of G Board

A

B

C

D

E

F

G

1

AC IN 100V 50/60Hz

2

MMBT4401

4A 250V

43

12

600uH

680k

0.33u

680k

ERZV10D621

680k

20k

0.01u

14.4

4.2

0

MMBT4403

1k

14.2

0 14.4

LL4148-GS08

1u

20k

LL4148-GS08

510

75k

RLZTE-1118C

TLZ16C-GS08

4mH

470p

0.1u

47u 25v

D3SB60

MMBT4401

DAP008ADR2

0.1u

470p

0.1u

128.3

5.9

0.4

0.3

0.6

LL4148-GS08

0.001u

100u

450V

2N7002LT1

22k

14.5

51

100p

820k

1M

820k

9.1M

100k

2.37k

BYV26E,133

120k

BYV26E,133

1.5k

1N4935RL

STB9NC60-1

TLZ24C-GS08

TLZ5V1B-GS08

120k

100

5.7

TCET1104G

2.4

0.001u

85.8

0.1

17A-U93

330

0.39

12.1

16CTQ100

0.001u

390

11.9

10.1

10

680p

10.8

DAS01A

2.4

220p

1k

100

0

2.4

98765

16CTQ100

0.001u

1.5k

1k

680u 25V

0.1u 39k

0

11

680u 25V

1.33k

0.1u

5.1k

12

+5V

100u 25V

0

0.01u

93.1k

48.7k51.1k

0.1u

51.1k

13

5 4 3

TO A (a) BOARD CN201

2

1

14

15

H

K

0.001u

22M

0.001u

22M

0.001u

TLZ16C-GS08

0.1

LL4148-GS08

51.1k

G(POWER)

I

J

B-SS3627<J..> - G..

SDM-X72(E) 3-19

G

[

POWER SUPPLY

—G BOARD —

]

SDM-X72(E) 3-20

• Items with no part number and no description are not stocked because they are seldom required for routine service.

• The construction parts of an assembled part are indicated with a collation number in the remark column.

• Items marked " * " are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items.

The components identified ! marked are critical for safety. Replace only with the part number specified.

Les composants identifiés par la marque ! sont critiques pour la sécurité. Ne les remplacer que par une pièce portant le numéro spécifié.

SECTION 4

EXPLODED VIEWS

SDM-X72(E) 4-1

4-1. CHASSIS

+PWHTP 3X6

4

8

+PTP 3X8

7

+PTP 3X10

+P 3X4

6

2

REF.NO. PART NO. DESCRIPTION REMARK

1 4-090-557-01 COVER, REAR (GRAY)

(US/CND/AEP/CH)

4-090-557-11 COVER, REAR (BLACK)(US/CND/AEP)

14

+PWH 3X6

+P 3X4

+PTP 4X10

+PWH 3X6

11

+PWH 3X6

12

+PWH 3X5

13

+PP 4X10

+PWH 3X6

10

9

+PWH 3X6

15

+PTP 3X8

5

4

+PWH 3X12

+PTP 3X10

+PWHTP 3X6

+B 3X8

+PSW 4X10

16

+B 3X8

+PSW 4X10+PSW 4X10

3

2 X-4041-271-1 CABINET ASSY (GRAY) 3

(US/CND/AEP/CH)

X-4041-269-1 CABINET ASSY (BLACK) 3

(US/CND/AEP)

3 4-089-923-01 COVER, MINI DIN (GRAY)

(US/CND/AEP/CH)

4-089-923-11 COVER, MINI DIN (BLACK)

(US/CND/AEP) 4 1-825-215-11 BOX, SPEAKER 5 A-1401-985-A H BOARD, MOUNTED

6 X-4041-270-1 BEZEL ASSY (GRAY)

(US/CND/AEP/CH)

X-4041-268-1 BEZEL ASSY (BLACK)(US/CND/AEP)

7 A-1401-986-A

U BOARD, MOUNTED 8 4-093-038-01 WASHER 9 1-804-981-11 PANEL, LCD (M170EN05) 10 ! 1-786-460-11 SWITCH POWER

11 1-761-619-11 I BOARD, MOUNT (INVERTOR BOARD) 12 ! 1-417-348-11 INLET, AC 13 1-761-615-11 G BOARD, MOUNT (POWER BOARD) 14 A-1404-772-A A BOARD, MOUNTED 15 A-1604-259-A STAND ASSY (GRAY) 16

(US/CND/AEP/CH)

A-1604-255-A STAND ASSY (BLACK) 16

(US/CND/AEP)

1

16 4-089-996-01 COVER (REAR), ARM (GRAY)

(US/CND/AEP/CH)

4-089-996-11 COVER (REAR), ARM (BLACK)

(US/CND/AEP)

SDM-X72(E) 4-2

4-2. PACKING MATERIALS

54 55 56 57 58 59

53

60 61

REF.NO. PART NO. DESCRIPTION REMARK

51 * 4-093-186-01 INDIVIDUAL CARTON (GRAY)

(US/CND/AEP/CH)

* 4-093-185-01 INDIVIDUAL CARTON (BLACK)

(US/CND/AEP) 52 * 4-093-187-01 CUSHION (LOWER) 53 * 4-092-765-01 BAG, PROTECTION 54 * 4-093-188-01 CUSHION (UPPER) 55 !

! !

1-790-568-12 CORD SET, POWER (U/C) 1-765-719-11 CORD SET, POWER (AEP) 1-827-087-11 CORD SET, POWER (CH)

56 1-824-952-11 CORD WITH CONNECTOR(15P DSUBX2) 57 1-824-963-11 CORD WITH CONNECTOR 58 1-824-598-11 CABLE, DVI-D 59 4-093-065-11 MANUAL, INSTRUCTION (U/C)

4-089-157-21 MANUAL, INSTRUCTION (AEP) 4-089-157-32 MANUAL, INSTRUCTION (CH)

60 1-796-619-11 DISC, CD-ROM

52

51

61 * 4-093-235-01 LABEL, INFORMATION (GRAY)

(US/CND/AEP/CH)

* 4-093-235-11 LABEL, INFORMATION (BLACK)

(US/CND/AEP)

SDM-X72(E) 4-3

NOTE:

The components identified ! marked are critical for safety. Replace only with the part number specified.

SECTION 5

ELECTRICAL PARTS LIST

• All variable and adjustable resistors have characteristic curve B, unless otherwise noted.

Les composants identifiés par la marque ! sont critiques pour la sécurité. Ne les remplacer que par une pièce portant le numéro spécifié.

When indicating parts by reference number, please include the board name.

• Items marked " * " are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items.

RESISTORS

• All resistors are in ohms

• F : nonflammable

SDM-X72(E) 5-1

No. # Board Type !/*Ref.No. Part No. Descrption Remarks-1 Remarks-2 Difference

1 A FUSE F201 1-576-704-11 FUSE 7A 125V

!

2 A IC IC201 6-703-630-01 IC BA9741F

3 A IC IC204 6-702-889-01 IC SI-3033KS-TL

4 A IC IC205 6-702-940-01 IC XC6203E332PR

5 A IC IC206 6-703-152-01 IC LD1085DT

6 A IC IC208 6-702-940-01 IC XC6203E332PR

7 A IC IC301 6-702-994-01 IC MTV412MV128

8 A IC IC303 8-759-672-79 IC M24C02-WMN6T(A)

9 A IC IC304 8-759-672-79 IC M24C02-WMN6T(A)

10 A IC IC305 8-759-672-79 IC M24C02-WMN6T(A)

11 A IC IC401 6-703-171-01 IC GM5020

12 A IC IC603 8-759-541-25 IC M52758P

13 A IC IC801 6-702-887-01 IC TDA7496L

14 G DIODE D130 8-719-510-51 DIODE D3SB60F

15 G DIODE D201 6-500-359-01 DIODE STPS20H100CT

16 G DIODE D202 6-500-359-01 DIODE STPS20H100CT

17 G IC IC101 6-702-918-01 IC DAP008ADR2

18 G IC IC251 6-702-917-01 IC DAS001

19 G TRANSISTOR Q101 6-550-394-01 TRANSISTOR STB9NC60-1

20 H DIODE D909 6-500-388-01 DIODE L-934SYC

21 H DIODE D910 6-500-388-01 DIODE L-934SYC

22 H SWITCH S901 1-786-426-11 SWITCH, TACTILE

23 H SWITCH S902 1-786-426-11 SWITCH, TACTILE

24 H SWITCH S903 1-786-426-11 SWITCH, TACTILE

25 H SWITCH S904 1-786-426-11 SWITCH, TACTILE

26 H SWITCH S905 1-786-426-11 SWITCH, TACTILE

27 H SWITCH S906 1-786-426-11 SWITCH, TACTILE

28 H SWITCH S907 1-786-426-11 SWITCH, TACTILE

29 I FUSE F1 1-576-410-21 FUSE, CHIP

30 I FUSE F2 1-576-410-21 FUSE, CHIP

! !

31 I IC IC1 6-702-916-01 IC OZ960S

SDM-X72(E) 5-2

No. # Board Type !/*Ref.No. Part No. Descrption Remarks-1 Remarks-2 Difference

32 I IC IC2 6-702-915-01 IC SI4532DY

33 I IC IC3 6-702-915-01 IC SI4532DY

34 I IC IC4 6-702-915-01 IC SI4532DY

35 I IC IC5 6-702-915-01 IC SI4532DY

SDM-X72(E) 5-3

9-878-803-01

Sony Corporation

Sony Technology Center

Technical Services

Service Promotion Department

English

2003AJ74WEB-1

Printed in USA

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL

SDM-X72

US Model

Canadian Model

AEP Model

Chinese Model

DL1

CHASSIS

ORIGINAL MANUAL ISSUE DATE: 1/2003

ALL REVISIONS AND UPDATES TO THE ORIGINAL MANUAL ARE APPENDED TO THE END OF THE PDF FILE.

REVISION DATE REVISION TYPE SUBJECT

1/2003 No revisions or updates are applicable at this time.

Design and specications are subject to change without notice.

TFT LCD COLOR COMPUTER DISPLAY

9-878-803-01

PRINTING THE SERVICE MANUAL

The PDF of this service manual is not designed to be printed from cover to cover. The pages vary in size, and must therefore be printed in sections based on page dimensions.

NON-SCHEMATIC PAGES

Data that does NOT INCLUDE schematic diagrams are formatted to 8.5 x 11 inches and can be printed on standard letter-size and/or A4-sized paper.

SCHEMATIC DIAGRAMS

The schematic diagram pages are provided in two ways, full size and tiled. The full-sized schematic diagrams are formatted on paper sizes between

8.5” x 11” and 18” x 30” depending upon each individual diagram size. Those diagrams that are LARGER than 11” x 17” in full-size mode have been tiled for your convience and can be printed on standard 11” x 17” (tabloid-size) paper, and reassembled.

TO PRINT FULL SIZE SCHEMATIC DIAGRAMS

If you have access to a large paper plotter or printer capable of outputting the full-sized diagrams, output as follows:

1) Note the page size(s) of the schematics you want to output as indicated in the middle window at the bottom of the viewing screen.

2) Go to the File menu and select Print Set-up. Choose the printer name and driver for your large format printer. Con ﬁ rm that the printer settings are set to output the indicated page size or larger.

3) Close the Print Set Up screen and return to the File menu. Select “Print...” Input the page number of the schematic(s) you want to print in the print range window. Choose OK.

TO PRINT TILED VERSION OF SCHEMATICS

Schematic pages that are larger than 11” x 17” full-size are provided in a 11” x 17” printable tiled format near the end of the document. These can be printed to tabloid-sized paper and assembled to full-size for easy viewing.

If you have access to a printer capable of outputting the tabloid size (11” x 17”) paper, then output the tiled version of the diagram as follows:

1) Note the page number(s) of the schematics you want to output as indicated in the middle window at the bottom of the viewing screen.

2) Go to the File menu and select Print Set-up. Choose the printer name and driver for your printer. Con ﬁ rm that the plotter settings are set to output 11” x 17”, or tabloid size paper in landscape (

3) Close the Print Set Up screen and return to the File menu. Select “Print...” Input the page number of the schematic(s) you want to print in the print range window. Choose OK.

TO PRINT SPECIFIC SECTIONS OF A SCHEMATIC

To print just a particular section of a PDF, rather than a full page, access the Graphics Select tool in the Acrobat Reader tool bar.

1) To view the Graphics Select Tool, press and HOLD the mouse button over the Text Select Tool which looks like: This tool will expand to reveal to additional tools. Choose the Graphics Select tool by placing the cursor over the button on of the far right that looks like:

) mode.

T

2) After selecting the Graphics Select Tool, place your cursor in the document window and the cursor will change to a plus (+) symbol. Click and drag the cursor over the area you want to print. When you release the mouse button, a marquee (or dotted lined box) will be displayed outlining the area you selected.

3) With the marquee in place, go to the ﬁ le menu and select the “Print...” option. When the print window appears, choose the option under the section called “Print Range” which says “Selected Graphic”.

Select OK and the output will print only the area that you outlined with the marquee.

(continued >)

ON-SCREEN SEARCH OPTION

All of the text within the service manual PDF is content searchable. This means that you can enter any text, word, phrase or reference number that appears in the manual, and the PDF software will search, ﬁ nd and move the cursor to the location where you requested text ﬁ rst appears. This feature can be particularly useful in locating components on a speciﬁ c schematic or printed wire circuit board (PWB) diagrams.

Follow these steps to effectively locate a component on a schematic diagram:

1) Locate the schematic you want to search by clicking on the corresponding bookmark on the left side of the screen. The view on the right of the screen will then jump to the desired schematic page.

2) Magnify the diagram to at least 400% before conducting a component search. This will enable you to easily view the reference number when it is highlighted on screen. To do this, click on the magnifying glass button on the tool bar at the top of the screen. Move the cursor over the diagram and RIGHT click you mouse. Select the 400% magniﬁ cation option on the pop-up menu. Click on the button with the icon of the open hand to deactivate the magniﬁ cation tool

3) Search the diagram (or the entire manual) by clicking on the binocular button tool at the top of the screen. The “Find” window will appear and allow you to type in your desired text. Type in a reference designator, such as R502, and click on the “Find” button. If the component is not on the diagram, but is listed anywhere else in the manual, the cursor will jump to the ﬁ rst location the text is found in the ﬁ le. To ﬁ nd another instance of that same text, click on the binocular button again and select “Find Again.”

Sony SDM-X72 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

TABLE OF CONTENTS

1-1. REAR COVER AND CABINET ASSY REMOVAL

DISASSEMBLY

1-2. H BOARD REMOVAL

1-3. I BOARD REMOVAL

1-4. A BOARD REMOVAL

1-5. G BOARD REMOVAL

1-6. U BOARD AND LCD UNIT REMOVAL

1-7. LCD PANEL REMOVAL

ADJUSTMENTS

2-1. Service Functions of Buttons in Front Panel

2-2. Uses of Service Mode

2-3. Functions of Service Mode

2-4. White Balance Adjustment

2-5. Action after Replacing the LCD Panel and Board

3-1. BLOCK DIAGRAMS

DIAGRAMS

3-2. CIRCUIT BOARDS LOCATION

3-3. SCHEMATIC DIAGRAMS AND PRINTED WIRING BOARDS

(1) Schematic Diagrams of A (a, b, c, d, e, f, g, h) Board

(2) Schematic Diagram of H Board

(3) Schematic Diagrams of I Board

(4) Schematic Diagram of U Board

(5) Schematic Diagrams of G Board

EXPLODED VIEWS

4-1. CHASSIS

4-2. PACKING MATERIALS

ELECTRICAL PARTS LIST