Sony SDM-N50PS Service Manual
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Sony SDM-N50PS Service Manual

Sony SDM-N50PS Service Manual

Tft lcd color computer display
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SERVICE MANUAL

LCD panel
Panel type: a-Si TFT Active Matrix
Picture size: 15 inch (38 cm)
Input signal format
RGB operating frequency*
Horizontal: 30 – 61 kHz
Vertical: 48 – 85 Hz (only XGA mode
at 75 Hz)
Resolution
Horizontal: Max.1024 dots
Vertical: Max.768 lines
Input signal levels
RGB video signal
0.700 Vp-p, 75 Ω, positive
SYNC signal
TTL level, 2 kΩ,
positive or negative
(Separate horizontal and vertical,
or composite sync)
0.3 Vp-p, 75Ω, negative
(Sync on green)
Headphones jack
Stereo minijack
Accepts impedance of more than 16Ω
AUDIO IN jack
Stereo minijack
Accepts impedance of 47 kΩ
Accepts level 0.5 Vrms
Power requirements
100 – 240 V, 50 – 60 Hz,
0.45 – 0.25 A
Power consumption
Max. 28 W
Operating temperature
5 – 35
Dimensions (width/height/depth)
Display (without stand):
Approx. 356 × 280 × 26 mm
(14
Display (with stand, at maximum
angle: 40
Approx. 356 × 225 × 203 mm
(14
Media engine (without stand):
Approx. 45 × 180 × 180 mm
(1
Media engine (with stand):
Approx. 94 × 185 × 180 mm
(3
MICROFILM
C
˚
1
× 11
1
× 1
1
/
/
/
inches)
16
6
16
):
˚
1
× 8
7
× 8 inches)
/
/
16
8
× 7
× 7
3
1
1
/
/
/
inches)
4
8
8
11
× 7
1
× 7
1
/
/
/
inches)
16
4
8
TFT LCD COLOR COMPUTER DISPLAY
SDM-N50PS
SPECIFICATIONS
Mass
Display (with stand):
Media engine (with stand):
Plug & Play
DDC1/DDC2B/DDC2Bi
Accessories
See page 8.
• LCD display
• Media engine
• Display stand
• Media engine stand
• Power cord
• System connecting cable (2 m)
(applicable cable type: DP-2)
• HD15 (RGB) video signal cable
• Audio cord (stereo miniplug)
• Macintosh adapter
• Windows Monitor Information Disk/Utility Disk
• Macintosh Utility Disk
• Software for use when installing the display vertically
(WinPortrait/MacPortrait)
• Warranty card
• Notes for Macintosh users
• This instruction manual
* Recommended horizontal and vertical timing condition
• Horizontal sync width duty 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 should be more than 450 µsec.
Design and specifications are subject to change without notice.
US Model
Canadian Model
AEP Model
Chassis No. SCC-L32B-A
ST5
CHASSIS
Approx. 1.75 kg (3 lb 140 oz)
Approx. 0.85 kg (1 lb 14 oz)
y
p g

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Summary of Contents for Sony SDM-N50PS

  • Page 1: Service Manual

    SDM-N50PS SERVICE MANUAL US Model Canadian Model AEP Model Chassis No. SCC-L32B-A CHASSIS SPECIFICATIONS LCD panel Panel type: a-Si TFT Active Matrix Mass Display (with stand): Picture size: 15 inch (38 cm) Approx. 1.75 kg (3 lb 140 oz) Input signal format...

  • Page 2: Power Saving Function

    SDM-N50PS DIAGNOSIS Factorical preservation register LED indicates Display part trouble SHUTDOWN_LOG1 bit4 (16) Part of the body only Red (0.5 sec) and Off (0.5 sec) Backlight trouble SHUTDOWN_LOG1 bit2 (4) Parts of the body and the display Amber (0.5 sec) and Off (1.5 sec)
  • Page 3 SDM-N50PS PRIMARY MODE MODE AT PRODUCTION MODE 8 MODE 9 MODE 10 MODE 11 MODE 12 MODE 13 MODE 14 MODE 15 RESOLUTION 800 X 600 800 X 600 800 X 600 800 X 600 — — 832 X 624...
  • Page 4 SDM-N50PS PRIMARY MODE MODE AT PRODUCTION MODE 24 MODE 25 MODE 26 MODE 27 MODE 28 MODE 29 MODE 30 MODE 31 RESOLUTION 640 X 400 640 X 350 640 X 400 640 X 480 1024 X 768 640 X 400...
  • Page 5 VIEWS AND IN THE PARTS LIST ARE CRITICAL FOR Parts on Set SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS AP- PEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE- MENTS PUBLISHED BY SONY. CIRCUIT ADJUST- MENTS THAT ARE CRITICAL FOR SAFE OPERATION 0.15 µ...

  • Page 6: Table Of Contents

    SDM-N50PS TABLE OF CONTENTS Section Title Page 1. GENERAL ..............1-1 2. DISASSEMBLY 2-1. Rear Cover Removal ........... 2-1 2-2. Jack Cover Removal ..........2-1 2-3. B Board Removal ..........2-2 2-4. H Board Removal ..........2-2 2-5. LCD Module (TFT) Removal ......2-2 2-6.

  • Page 7: General

    Example of plug types Consult your Sony dealer when replacing the fluorescent tube. Maintenance • Be sure to unplug the power cord from the power outlet before cleaning your monitor.
  • Page 8 1 1 (Power) switch and indicator (pages 9, 17, 21) Media engine qg HD15 (RGB) input 2 connector (INPUT2) (page 8) Identifying parts and controls This switch turns the display on and off. This connector inputs RGB video signals (0.700 Vp-p, The indicator lights up in green when the monitor is turned on.
  • Page 9 x Connecting to a Macintosh or compatible If no picture appears on your screen Step 3: Connect the power cord Setup computer • Check that the monitor is correctly connected to the computer. • Check that the media engine is on. With the display, media engine, and computer switched off, Use the supplied Macintosh adapter.
  • Page 10 To close the display stand Installing the display vertically Selecting the on-screen menu Selecting the input signal While sliding the stopper up, close the display stand. language (LANGUAGE) This display can be installed either horizontally or vertically using You can connect two computers to this monitor using the INPUT the supplied display stand.
  • Page 11 x Using the MENU, M (+)/ m (–), and OK buttons 4 V CENTER (page 14) Adjusting the contrast (CONTRAST) V CENT ER Customizing Your Monitor Select the V CENTER menu Display the main menu. to adjust the picture’s vertical Contrast adjustment is made using a separate CONTRAST menu Press the MENU button to display the main menu on your centering.
  • Page 12 Repeat steps 2 and 3 of “Eliminating flicker or blurring the screen. For Macintosh (PHASE/PITCH).” (COLOR) Click [Utility Disk] [SONY-Utility]. Press the MENU button. Press the MENU button. The main menu appears on the screen. Press the MENU button. The COLOR settings allow you to adjust the picture’s color The main menu appears on the screen.

  • Page 13: Technical Features

    Resetting the adjustments (RESET) Additional settings (Option) Technical Features You can reset the adjustments. You can adjust the following options: • BASS BOOST Power saving function Press the MENU button. • BACKLIGHT The main menu appears on the screen. • POWER SAVE •...

  • Page 14: Troubleshooting

    This indicates the currently selected connector (INPUT: 1 or INPUT: 2). following. Install the Windows Monitor Information Disk (page 9) and select this monitor (“SDM-N50PS”) from among the Sony monitors in the Windows 95/98 monitor selection GO TO POWER SAVE screen.
  • Page 15 1 (power) indicator and inform your authorized • Horizontal sync width duty should be more than 4.8% of total Sony dealer of the monitor’s condition. Be sure to note the model horizontal time or 0.8 µs, whichever is larger.

  • Page 16: Disassembly

    SDM-N50PS SECTION 2 DISASSEMBLY 2-1. REAR COVER REMOVAL 2 Remove the rear cover after move it in the direction of allow A and also remove concavities. 1 Two screws Four concavities (Tapping screw 3x8) Four claws LCD module (TFT) Cushion 2-2.

  • Page 17: B Board Removal

    SDM-N50PS 2-3. B BOARD REMOVAL 2-4. H BOARD REMOVAL 1 Two copper foil tapes 3 Cover holder 2 Two screws 2 Earth (H) 1 Three screws (+BVTP3x6) 2 Earth (H) 3 Shield case 4 Washer (H) 5 H board CN508...

  • Page 18: A Board Removal

    SDM-N50PS 4 For screws (HD 15) 2-6. A BOARD REMOVAL CN705 6 Three connectors CN701 CN702 (CN705, CN701, CN702) 5 Three screws (+TP 3x5) 2 Four screws (+BVTP 3x12) 7 A board 1 Four sheets (G) 3 Case (L) 2-7. G BOARD REMOVAL * Remove A board refering 2-6.

  • Page 19: Adjustments

    SDM-N50PS SECTION 3 ADJUSTMENTS Connect the personal computer, monitor, and signal generator as shown below, and control the monitor. Signal generator (VG-823, etc.) 1-690-391-21 A-1500-819-A 4 pin Cord,Connection Interface Unit INPUT-1 Computer for jig Box Unit 1-900-255-59 SDM-N50 D-sub mini Din...
  • Page 20 SDM-N50PS 3. Adjustment of 5000°K (1) Confirm every R/G/B_USER_BKG are initialized value. (2) Receive MODE 15 (1024X768 60Hz) 80IRE. Set COLOR to 5000°K. (COLOR_INDEX=3) (3) Make adjustment with R/G_USR_DRV to set the chromaticity within the specification. y adjustment ..Make adjustment with B_USR_DRV.

  • Page 21: Diagrams

    SECTION 4 DIAGRAMS 4-1. BLOCK DIAGRAMS RGB PROCESS, SCAN CONVERTER, GV IF TRANSMITTER IC301 SYSTEM CONTROL IC214 SCAN CONVERTER IC205 A/D CONVERT IC304 CN102 VIDEO SW GV IF TRANSMITTER CN101 D RA0 RA D0 RED1 IN1(R) OUT(R) R IN LCD R0 S DATA P SDT P GREEN1...
  • Page 22 GV IF RECEIVER SUB SYSTEM CONTROL, INVERTER, AUDIO IC601 CN505 GV IF RECEIVER REFRQP 31 . SDATAP R0 - R5 SDATAN REFRQN IC603 DC-DC DD ON3 SHDN G0 - G5 IC604 CONTROL B0 - B5 LCD PANEL (IC601) IC602 +3.3V REG DD ON2 Q601 5V(SENS)
  • Page 23 ( POWER SUPPLY,AUDIO IN ) IC790 BUFFER CN705 CN706 BUFF -IN2 OUT2 AUDIO R Q771 AUDIO AUDIO GND AUDIO L BUFF -IN1 OUT1 AUDIO GND Q770 A BOARD CN106 T702 CN701 D702 POWER CN704 T701 AC L OUT MAIN RECT IC701 D701 PWM CONTROL...

  • Page 24: Circuit Boards Location

    Terminal name of semiconductors in silk screen 4-3. SCHEMATIC DIAGRAMS AND PRINTED 4-2. CIRCUIT BOARDS LOCATION WIRING BOARDS printed circuit ( Circuit Device Printed symbol Terminal name DISPLAY Note: Collector • All capacitors are in µF unless otherwise noted. (pF: µµF) Transistor Emitter Base...

  • Page 25: Schematic Diagrams Of A (P1-P3) Boards

    (1) Schematic Diagrams of A (P1-P3) Boards -P1-a (SYSTEM CONTROL) • Divided circuit diagram One sheet of A-P1 board circuit diagram is divided into two sheets, each having the code A-P1-a to A-P1-b . For example, the destination ab1 on the A-P1-a sheet is connected to ab1 on the A-P1-b sheet.
  • Page 26 R124 1/16W REFCLK /WRL AD(2..7) TO P3-a CH3_RST IC108 TO P2-a INPUT_SEL TC74HC4066AFT(EL) IC102 TC7S04FU(TE85R) TO P3-b GV_IFON CH3_AD0 TO P2-a IN B P3-a IN A POLH EXITH TO P2-a CH3_AD1 POLV EXITV C127 R143 R141 1/16W R125 R133 4.7k C120 1/16W 0.1 25V F...
  • Page 27 D208 D209 D210 MA3075WA-(TX)MA3075WA-(TX) MA3075WA-(TX) L201 INPUT1 CN102 47µH C201 C203 0.01 R277 RED1 C205 C287 C207 C209 C210 0.01 R278 C211 GREEN1 R212 VCC1(R) VCC2(R) 1/16W C213 IN1(R) OUT(R) C216 0.01 R279 C212 VCC1(G) R215 BLUE1 1/16W IN1(G) C215 R209 C214 R210...
  • Page 28 SER12 SER11 HSYNC REFIN COAST REFOUT PWRDNB CKEXT FILT • Divided circuit diagram HSOUT One sheet of A-P2 board circuit diagram is divided into two DATACK/ sheets, each having the code A-P2-a to A-P2-b . For DATACK example, the destination ab1 on the A-P2-a sheet is connected to ab1 on the A-P2-b sheet.
  • Page 29 -P3-a (SCAN CONVERTER) DVSYNC MCWR MCINT DHSYNC MCALE VSS_1 VDD_13 CLAMPOUT CHIPSELECT R AD7 RGB(23) MCAD(8) R AD6 RGB(22) MCAD(7) R AD5 RGB(21) VSS_13 R AD4 RGB(20) MCAD(6) R AD3 RGB(19) MCAD(5) R AD2 RGB(18) MCAD(4) R AD1 RGB(17) MCAD(3) R AD0 RGB(16) MCAD(2)
  • Page 30 LCDG1 LCDB4 LCDG0 LCDB5 LCDR5 VSYNC LCDR4 HSYNC LCDR3 SFTCLK LCDR2 LCDR1 CNTL LCDR0 REFREQ SDDT0 SDDT15 SDDT16 SDDT31 DQ15 DQ15 SDDT1 SDDT14 SDDT17 SDDT30 DQ14 DQ14 25 26 27 28 29 30 31 32 33 34 35 36 VSSQ VSSQ VSSQ VSSQ...
  • Page 31 • A BOARD SEMICONDUCTOR [ RGB PROCESS, SCAN CONVERTER, GVIF TRANSMITTER, SYSTEM CONTROL ] LOCATION — A BOARD (Conductor Side) — — A BOARD (Component Side) — Conductor Component Side Side IC101 B–4 IC102 B–1 IC103 A–4 IC105 C–2 IC106 A–2 IC107 A–2...

  • Page 32: Schematic Diagrams Of B (P1-P4) Boards

    (2) Schematic Diagrams of B (P1-P4) Boards TO P4 GND_HP CN505 (GV IF RECEIVER) C626 C627 FL603 NFM60R20 TO P4 12V_HP TO P2 RFB602 R607 RFB4 C604 C602 C603 1/16W 3.3V R604 4.7k 1/16W 32 31 30 28 27 26 25 24 23 22 21 20 19 18 17 C609 R611 5.6k...
  • Page 33 DDON_U TO P4 STBY_5V DDON3 TO P1 DDON2 FB501 FB502 C527 TO P3 6.3V FB504 R518 C504 C503 1/16W C512 C513 C510 C511 C506 C507 100p C508 100p 0.22 0.01 STBY5V X501 IC503 MM1170BFB WDT RESET R510 1/16W P20/A16 PA4/CKOT R507 P21/A17 1/16W...
  • Page 34 PS651 L653 L651 22µH 68µH TO P2 Q653 FZT853-TA 5V(SENS) 11.3 T651 TO P2 I_SENS TRANSFORMER POWER R651 100k 1/16W R653 R654 CN507 1/4W 1/4W R657 Q652 C652 DTA143XKA-T146 0.12 C653 100V R658 TO LAMP R652 R659 5.1k R655 R656 11.3 1/16W Q654...
  • Page 35 R591 R593 1/16W 1/16W R594 R547 C595 R549 Q593 1/16W 1/16W 100k 2SK1828 1/16W BUFFER R550 CN509 100k 1/16W R548 Q594 GVIF C530 C583 R595 2SK1828 1/16W BUFFER 1/16W SDT_P SDT_P CN510 SDT_GND C531 R558 R557 TO P1 C567 8.2k HEADPHONE JACK 8.2k 1/10W...
  • Page 36 [ GV IF RECEOVER SIB SYSTEM CONTROL, INVERTER, AUDIO ] — B BOARD (Component Side) — — B BOARD (Conductor Side) — B BOARD Terminal name of semiconductors in silk screen printed circuit ( Ref. Q501, Q551, Q552, Q591, Q601, Q651, Q652, Q653, Q654 !£...

  • Page 37: Schematic Diagrams Of H Board

    (3) Schematic Diagram of H Board R910 R909 R908 R907 R906 8.2k 2.7k 1.5k 3.3k STBY5V 1/16W 1/16W 1/16W 1/16W 1/16W USER INPUT R905 R904 R903 R902 S906 CONTROL 2.4k SW-1 1/16W 1/16W 1/16W 1/16W S901 D901 SW-1 BRPG1201W-TR POWER D915 C903 MA8082...

  • Page 38: Schematic Diagrams Of G (P1-P2) Boards

    (4) Schematic Diagrams of G (P1-P2) Boards CN704 R731 POWER AC L OUT T702 R728 AC L IN TFM96455 D702 1/2W D10SC9M FH702 C703 R702 D701 100k 0.01 F701 C724 D2SB60A 630V 3.15A 0.0047 T701 250V 250V 7.4MHz D703 CN703 C704 C705 C723...
  • Page 39 R788 CN705 1/10W AUDIO_R (AUDIO IN) R786 R780 AUDIO_GND 1/4W 1/4W AUDIO_L R789 IC790 AUDIO_GND µPC358G2-E2 1/10W TO A BOARD BUFFER R772 R770 100k R776 R777 C793 CN106 100k PS791 1/10W 100p 1/10W 1/4W C772 1/4W OUT1 C790 C770 R790 AUDIO R774 R794...
  • Page 40 [ POWER SUPPLY, AUDIO IN ] — G BOARD (Conductor Side) — — G BOARD (Component Side) — G BOARD Terminal name of semiconductors in silk screen printed circuit ( Ref. Q770, Q771 D708 - D710 D707, D711, D712 !¡ D767, D768 Schematic diagram : Refer to Terminal name of semiconductors...

  • Page 41: Semiconductors

    4-4. SEMICONDUCTORS AD9884-AKS-100S CXB1455R M52758FP TC74HC4066AFT(EL) TC74VHCT04AFT(EL) TC74VHCT14AFT(EL) TC74VHC04FT(EL) TC74VHC125FT(EL) TOP VIEW TOP VIEW TC74VHC86FT(EL) TOP VIEW 48 pin QFP 36 pin DIP BA033FP-E2 CXB1456R PC123F2 PC123FY2 TOP VIEW 14 pin SOP TOP VIEW 64 pin QFP TDA7315D013TR MAX1631EAI-TG068 BA10358F-E2 MAX1626ESA-TE2 PQ20VW5U MM1170BFB...
  • Page 42 DTA114EKA-T146 DTZ4.7C ERA34-10TP1 RE10M-B2 DTA123JKA-T146 MA111 RGP02-20EL-6394 RE10M-T1B2 DTA143XKA-T146 RD12SB2 UDZ-TE-17-12B DTC114EK CATHODE DTC114EKA-T146 UDZ-TE-17-4.7B DTC323TK 1SS355TE-17 DTC323TKT146 2SC2712G-TE85L ANODE 2SC2712-YG ANODE MA151WK-TX 1SS119-25 1SS184 11ES2 CATHODE CATHODE D1NL20U-TR FZT853-TA CATHODE ANODE MA3XD15001S0 AA1101W ANODE CATHODE IRFIBC40 ANODE ANODE D10SC9M CATHODE CATHODE MARK...

  • Page 43: Exploded Views

    SDM-N50PS SECTION 5 EXPLODED VIEWS NOTE: ¡ The components identified by mark • Items with no part number and no • Items marked " * " are not stocked since are critical for safety. description are not stocked because they they are seldom required for routine Replace only with part number specified.

  • Page 44: Chassis

    SDM-N50PS 5-2. CHASSIS ¡ The components identified by mark 7-685-648-79 +BVTP 3X12 are critical for safety. Replace only with part number specified. 7-682-545-01 +B 3X4 Les composants identifiés par une ¡ marque sont critiques pour la sécurité. Ne les remplacer que par une pièce portant le numéro spécifié.

  • Page 45: Packing Materials

    SDM-N50PS 5-3. PACKING MATERIALS ¡ The components identified by mark are critical for safety. 103 105 106 107 108 109 110 111 Replace only with part number specified. 112 113 114 115 116 118 Les composants identifiés par une ¡...

  • Page 46: Electrical Parts List

    SDM-N50PS SDM-N50PS ¡ Les composants identifiés par une The components identified by mark SECTION 6 ¡ marque sont critiques pour la sécurité. are critical for safety. Ne les remplacer que par une pièce Replace only with part number specified. ELECTRICAL PARTS LIST portant le numéro spécifié.
  • Page 47 SDM-N50PS ¡ The components identified by mark Les composants identifiés par une ¡ are critical for safety. marque sont critiques pour la sécurité. Replace only with part number specified. Ne les remplacer que par une pièce portant le numéro spécifié.
  • Page 48 SDM-N50PS ¡ Les composants identifiés par une The components identified by mark ¡ marque sont critiques pour la sécurité. are critical for safety. Ne les remplacer que par une pièce Replace only with part number specified. portant le numéro spécifié.
  • Page 49 SDM-N50PS ¡ The components identified by mark Les composants identifiés par une ¡ are critical for safety. marque sont critiques pour la sécurité. (h)(a) Replace only with part number specified. Ne les remplacer que par une pièce portant le numéro spécifié.
  • Page 50 SDM-N50PS ¡ Les composants identifiés par une The components identified by mark ¡ marque sont critiques pour la sécurité. are critical for safety. Ne les remplacer que par une pièce Replace only with part number specified. portant le numéro spécifié.
  • Page 51 SDM-N50PS ¡ The components identified by mark Les composants identifiés par une ¡ are critical for safety. marque sont critiques pour la sécurité. Replace only with part number specified. Ne les remplacer que par une pièce portant le numéro spécifié.
  • Page 52 SDM-N50PS ¡ Les composants identifiés par une The components identified by mark ¡ marque sont critiques pour la sécurité. are critical for safety. Ne les remplacer que par une pièce Replace only with part number specified. portant le numéro spécifié.
  • Page 53 SDM-N50PS ¡ The components identified by mark Les composants identifiés par une ¡ are critical for safety. marque sont critiques pour la sécurité. Replace only with part number specified. Ne les remplacer que par une pièce portant le numéro spécifié.
  • Page 54 SDM-N50PS ¡ Les composants identifiés par une The components identified by mark ¡ marque sont critiques pour la sécurité. are critical for safety. (a)(g) Ne les remplacer que par une pièce Replace only with part number specified. portant le numéro spécifié.
  • Page 55 SDM-N50PS ¡ The components identified by mark Les composants identifiés par une ¡ are critical for safety. marque sont critiques pour la sécurité. Replace only with part number specified. Ne les remplacer que par une pièce portant le numéro spécifié.
  • Page 56 SDM-N50PS ¡ The components identified by mark Les composants identifiés par une ¡ marque sont critiques pour la sécurité. are critical for safety. Ne les remplacer que par une pièce Replace only with part number specified. portant le numéro spécifié.

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